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Mulyana, Mulyana, Vistarani Arini Tiwow i Sulistiawaty Sulistiawaty. "ANALISIS SUSEPTIBILITAS MAGNETIK TANAH TPA ANTANG MAKASSAR BERDASARKAN KEDALAMAN". ORBITA: Jurnal Kajian, Inovasi dan Aplikasi Pendidikan Fisika 8, nr 2 (10.11.2022): 234. http://dx.doi.org/10.31764/orbita.v8i2.11252.
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ABSTRAKAnalisis suseptibilitas magnetik pada tanah di TPA Antang Makassar berdasarkan kedalaman telah dilakukan. Studi ini bertujuan untuk menganalisis jenis mineral magnetik, domain magnetik, dan sumber mineral magnetik. Suseptibilitas magnetik diukur menggunakan alat Bartington MS2 Magnetic Susceptibility Meter dengan sensor MS2B yang bekerja pada dua frekuensi. Pengukuran suseptibilitas magnetik dilakukan dengan mengambil sampel pada lima titik dengan variasi kedalaman hingga 0-80 cm dari permukaan tanah. Hasil pengukuran menunjukkan bahwa nilai suseptibilitas magnetik di TPA Antang bervariasi 2,097 m3/kg hingga 33,523 m3/kg dan suseptibilitas magnetik bergantung frekuensi pada rentangan 2,51% hingga 6,51%. Sampel tanah diindikasikan mengandung mineral magnetik yang bersifat antiferomagnetik dan paramagnetik. Domain magnetik pada sampel tanah adalah superparamagnetik (SP) dan stable single domain (SSD). Sumber mineral magnetik dominan berasal dari aktivitas manusia (antropogenik). Kata kunci: TPA; tanah; suseptibilitas magnetik; mineral magnetik; antropogenik. ABSTRACTMagnetic susceptibility analysis of soil at TPA Antang Makassar based on depth has been carried out. This study aims to analyze the types of magnetic minerals, magnetic domains, and sources of magnetic minerals. Magnetic susceptibility was measured using a Bartington MS2 Magnetic Susceptibility Meter with an MS2B sensor that works on two frequencies. Magnetic susceptibility measurements were carried out by taking samples at five points with depth variations up to 0-80 cm from the ground surface. Measurement results show that the magnetic susceptibility values in Antang landfill varied from 2.097 m3/kg to 33.523 m3/kg and the magnetic susceptibility was frequency dependent in the range of 2.51% to 6.51%. Soil samples are indicated to contain magnetic minerals that are antiferromagnetic and paramagnetic. The magnetic domains in the soil samples are superparamagnetic (SP) and stable single domain (SSD). The dominant source of magnetic minerals comes from human activities (anthropogenic). Keywords: landfill; soil; magnetic susceptibility; magnetic mineral; anthropogenic.
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Arifya, Eldiani, i Afdal Afdal. "Pemetaan Zona Potensi Emas Menggunakan Metode Geomagnet di Jorong Lubuak Sariak, Nagari Kajai, Pasaman Barat". Jurnal Fisika Unand 9, nr 4 (25.01.2021): 524–30. http://dx.doi.org/10.25077/jfu.9.4.524-530.2020.
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Penelitian untuk menentukan zona sebaran emas di Jorong Lubuak Sariak, Nagari Kajai, Kabupaten Pasaman Barat, Sumatra Barat telah dilakukan. Penelitian ini menggunakan metode magnetik pada daerah seluas 700 m2 dengan 70 titik. Hasil penelitian menunjukan emas berasosiasi dengan pirhotit dengan nilai suseptibilitas 0,00046-1,4 SI, pirit dengan suseptibilitas 0,000035-0,005 SI dan siderit dengan suseptibilitas magnetik 0,0013 – 0,011 SI yang merupakan mineral sulfida magnetik yang terdapat dalam batuan metamorf dan sedimen. Selain itu mineral emas juga beasosiasi dengan batuan beku intrusi yaitu porfiri dengan nilai suseptibilitasnya 0,00025-0,21 SI. Di lokasi penelitian diduga emas berasosiasi dengan mineral pembawa emas terletak pada kedalaman 0 m sampai dengan 84 meter di bawah permukaan. The reasearch about mapping of gold potential zones in Jorong Lubuak Sariak, Nagari Kajai, Pasaman Barat has been conducted. This reasearch used magnetic method in area 700 m2 with 70 points. Results show that golds are associated with pyrrhotites with magnetic susceptibility value 0.00046 – 1.4 SI, pyrite with magnetic susceptibility value of 0.000035 – 0.005 SI, siderite with magnetic susceptibility of 0.0013 – 0.011 SI which is a magnetic sulfide mineral found inmetamorphic and sedimentary rocks. Gold minerals are also associated with igneous rock (intrusion) that is porphyry with magnetic susceptibility value of 0.00025 – 0.21 SI. Gold carrier minerals located at 0 – 84 m depth
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Boroallo, Anastacya, Vistarani Arini Tiwow i Sulistiawaty Sulistiawaty. "STUDI MINERAL MAGNETIK TANAH TPA ANTANG MAKASSAR BERDASARKAN DATA SUSEPTIBILITAS MAGNETIK". ORBITA: Jurnal Kajian, Inovasi dan Aplikasi Pendidikan Fisika 9, nr 1 (6.05.2023): 16. http://dx.doi.org/10.31764/orbita.v9i1.11663.
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ABSTRAKTelah dilakukan penelitian untuk mengetahui nilai suseptibilitas magnetik pada tanah di TPA Antang Makassar berdasarkan sebaran. Suseptibilitas magnetik diukur menggunakanbartington MS2 Magnetic susceptibility meter dengan sensor MS2B yang bekerja pada dua frekuensi. Pengukuran suseptibilitas magnetik dilakukan dengan mengambil sampel pada 30 titik dengan jarak yang tidak ditentukan atau secara random. Hasil penelitian menunjukkan bahwa nilai suseptibilitas magnetik di TPA Antang Makassar bervariasi dengan rentang 1,442 m3/kg hingga 33,523 m3/kg dan suseptibilitas magnetik bergantung frekuensi berada pada rentangan 2,32% hingga 6,51% rentangan nilai suseptibilitas magnetik tersebut mengindikasikan sampel mengandung mineral magnetik yang bersifat antiferomagnetik dan paramagnetik. Dimana domain magnetik pada sampel tanah TPA yaitu superparamagnetik (SP) dan stable single domain (SSD). Kata kunci: tanah; suseptibilitas magnetik; mineral magnetik;TPA. ABSTRACTResearch has been carried out to determine the value of magnetic susceptibility on soil at TPA Antang Makassar based on distribution. Magnetic susceptibility was measured using a bartington MS2 Magnetic susceptibility meter with an MS2B sensor that works on two frequencies. Magnetic susceptibility measurements were carried out by taking samples at 30 points with an undetermined distance or randomly. The results showed that the magnetic susceptibility values in Antang TPA Makassar varied with the range of 1.442m3/kg to 33.523 m3/kg and the frequency-dependent magnetic susceptibility was in the range of 2.32% to 6.51%. The range of magnetic susceptibility values indicated that the sample contained magnetic minerals. which are antiferromagnetic and paramagnetic.The magnetic domains in the soil samples are superparamagnetic (SP) and stable single domain (SSD). Keywords: soil; magnetic susceptibility; magnetic minerals; landfill
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Didik, Lalu A., Isniwana Damayanti, Jumliati Jumliati i Putri Dinda Alfadia Lestari. "Morphological Characteristics and Mineral Content Analysis of Magnetic Minerals Based on River and Coastal Sand using SEM-EDX". Jurnal Sains Dasar 10, nr 2 (1.11.2021): 44–50. http://dx.doi.org/10.21831/jsd.v10i2.42217.
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This study aims to analyze the mineral content and morphological characteristics of magnetic minerals based on coastal and river sand. Analysis of minerals content uses Atomic Absorption Spectroscopy (AAS) to determine the content of Fe and Energy Dispersive X-Ray (EDX) to determine the elements of magnetic minerals based on coastal and river sand. While the morphological characteristics were analyzed using Scanning Electron Microscope (SEM). Based on the AAS analysis, magnetic mineral based on coastal sand has higher Fe content (9.03 mg/gram) compared to magnetic mineral based on river sand (8.03 mg/gram). This is also confirmed by EDX analysis where the Fe content of magnetic mineral based on coastal sand is 2.07 ± 0.21%. This value is greater than the Fe content of magnetic mineral based on river sand which cannot be measured by EDX. Morphological analysis using SEM shows that magnetic mineral based on coastal sand has a relatively uniform particle size compared to magnetic mineral based on river sand. The particle size of magnetic minerals based on coastal sand also smaller than magnetic minerals based on river sand. Coastal sand also has finer size compared to river sand. This is because coastal sand sediments are formed due to the energy of sea waves so that they have a smoother structure. While river sand sediments come from limestone deposits that have a fine and coarse structure.
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Ponomarenko, O. "Method for Transformation of Weak Magnetic Minerals (Hematite, Goethite) into Strong Magnetic Mineral (Magnetite) to Improve the Efficiency of Technologies for Oxidized Iron Ore Beneficiation". Science and innovation 11, nr 2 (30.03.2015): 31–34. http://dx.doi.org/10.15407/scine11.02.031.
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Tamuntuan, Gerald, Seni H. J. Tongkukut i Guntur Pasau. "Analisis Suseptibilitas Dan Histeresis Magnetik Pada Endapan Pasir Besi Di Sulawesi Utara". Jurnal MIPA 6, nr 2 (22.11.2017): 105. http://dx.doi.org/10.35799/jm.6.2.2017.18008.
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Telah dilakukan pengukuran suseptibilitas dan hysteresis magnetic untuk mengetahui karakteristik magnetic endapan pasir besi pada beberapa lokasi di Sulawesi Utara. Lokasi pengambilan sampel dalam penelitian ini adalah tiga lokasi di pesisir timur semenanjung utara Pulau Sulawesi yaitu daerah Belang, Hais, dan Minanga, serta tiga lokasi di wilayah pesisir barat yaitu daerah Lalow, Inobonto, dan Lolan. Hasil yang diperoleh menunjukkan bahwa nilai suseptibilitas magnetic pada sampel-sampel pasir yang diukur bervariasi dari 7,73 × 10-8 m3kg-1 hingga 436,38 × 10-8 m3kg-1. Pengukuran suseptibilitas magnetik pada empat distribusi ukuran bulir pasir yang berbeda menunjukkan bahwa nilai rata-rata tertinggi suseptibiltas adalah pada pasir berukuran halus (fine grains). Secara umum, pasir besi pada daerah pantai timur semenanjung utara Pulau Sulawesi memiliki nilai suseptibilitas magnetik yang lebih tinggi dibandingkan dengan daerah pantai barat. Konsentrasi mineral superparamagnetik tertinggi berada pada daerah Belang. Mineral magnetik yang dominan dari sampel-sampel pasir besi yang diteliti adalah magnetit dengan domain statepseudo-single domain.Magnetic susceptibility and hysteresis parameters of iron sand deposits at several locations in North Sulawesi have been measuredin order to determine their magnetic characteristics. Samples were taken from six locations which is three locations on the east coast of the northern arm of Sulawesi Island (Belang, Hais and Minanga) and three othersfrom the western coastal areas (Lalow, Inobonto and Lolan).The result shows that magnetic susceptibility of the sand samples vary from 7,73 × 10-8 m3kg-1to 436,38 × 10-8 m3kg-1.Measurement of magnetic susceptibility in four different grain size distributions shows that fine grainsand have the highest susceptibility value.In general, magnetic susceptibility valueof Iron sand samplesfrom the east coast of the northarm of Sulawesi Island was higher than the west coast. Concentration of superparamagnetic mineral from Belang area was higher than other locations. The predominant magnetic minerals of the iron sand samples are magnetite with the domain state pseudo-single domain.
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Khuzaima, Nur, Khairel Rafezi, Nur Hidayah Ahmad Zaidi, M. K. R. Hashim i Sheikh Abdul Rezan. "Minerals Characterization of Magnetic and Non-Magnetic Element from Black Sand Langkawi". Solid State Phenomena 280 (sierpień 2018): 440–47. http://dx.doi.org/10.4028/www.scientific.net/ssp.280.440.
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Valuable minerals are defined as mineral which having good opportunities to economic and consireable important. The most commonly occurring sand mineral deposits are ilmenite, rutile, magnetite, cassiterite, monazite, tourmaline, zircon, kyanite, silimanite, and garnet. In Malaysia, mineral sand deposits is found in Langkawi which known as black sand Langkawi. Langkawi black sand having high amount of valuable minerals that is very crucial in the industrial and construction products. Characterizations of black sand acquire different techniques to concentrate and separate valuable minerals. These techniques utilize different in physical or chemical properties of the valuable and gangue (wastes) minerals. For magnetic is based on natural or induced differences in magnetic susceptibility or conductivity of the minerals.. They are used to distinguish and extract magnetic, slightly magnetic and non-magnetic components present in the heavy fraction (Rutile, Ilmenite, Magnetite, Garnets, Zircon and Monazite). All minerals will have one of three magnetic properties: ferromagnetic, paramagnetic and diamagnetic. Ferromagnetic minerals (i.e. Magnetite and Ilmenite) are magnetic and easily attracted to the poles of magnet. Paramagnetic and diamagnetic minerals in the group magnetic, but if the mixture of paramagnetic and diamagnetic minerals are passed through a magnetic field, the paramagnetic minerals will be pulled into the field and diamagnetic minerals separated from the field. By varying the intensity of the magnetic field, it is also possible to separate different paramagnetic minerals from each other. In this study, techniques used to separate valuable minerals from black sand are magnetic separator.
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Tanauma, Adey, i Ferdy Ferdy. "POTENSI SUMBERDAYA ALAM PASIR BESIPANTAI ARAKAN KABUPATEN MINAHASA SELATAN". JURNAL ILMIAH SAINS 15, nr 1 (31.10.2011): 225. http://dx.doi.org/10.35799/jis.11.2.2011.211.
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POTENSI SUMBERDAYA ALAM PASIR BESIPANTAI ARAKAN KABUPATEN MINAHASA SELATAN Adey Tanauma1) dan Ferdy1) 1)Program Studi Fisika FMIPA Universitas Sam Ratulangi, Manado 95115 ABSTRAK Pasir besi merupakan salah satu sumberdaya alam di Sulawesi Utara yang belum dimanfaatkan secara optimal. Salah satu lokasi yang cukup potensial untuk mendapatkan endapan pasir besi ini adalah pesisir pantai Arakan. Penelitian ini bertujuan untuk menentukan sifat-sifat magnetik endapan pasir besi yang terdapat di pesisir Pantai Arakan kabupaten Minahasa Selatan Provinsi Sulawesi Utara. Suseptibilitas magnetik dan magnetisasi saturasi sampel pasir besi Arakan mengindikasikan bahwa kandungan mineral magnetik yang dominan adalah magnetite. Ukuran bulir dari mineral magnetik terutama magnetite didominasi oleh bulir-bulir magnetik berukuran besar atau bulir magnetik dengan domain magnetik antara pseudosingle domain dan multi domain. Tingginya kandungan mineral magnetik berdasarkan nilai karakterisasinya, terutama nilai suseptibilitas magnetik memberikan peluang untuk pemanfaatan lebih lanjut dari sumberdaya alam ini. Kata kunci: histeresis magnetik, pasir besi, suseptibilitas THE POTENTIAL OF NATURAL RESOURCES OF IRON SAND IN ARAKAN COASTAL SUBPROVINCE OF SOUTH MINAHASA ABSTRACT Iron sand represent one of the natural resources in North Sulawesi which not yet been exploited in optimally. One of the location which quite potential to get this iron sand sediment is coastal area of Arakan. This research aim to determine the nature of magnetic of iron sand sediment which there are in coastal area of Arakan, Sub-province of South Minahasa, Province of North Sulawesi. Magnetic suseptibility and saturation magnetization of iron sand sampel of Arakan indicated that dominant magnetic mineral is magnetite. Seed size measure of magnetic mineral especially magnetite predominated by big sized magnetic seeds or magnetic seed with magnetic domain between domain pseudosingle and multi domain. The height content of magnetic mineral based on characteristic value, especially magnetic suseptibility give the opportunity for furthermore exploiting of this natural resources. Keywords : magnetic hysteresis, iron sand, suseptibility
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Prasetyo, Ihsan Junira, Hamdi Rifai, Syafriani Syafriani i Rizaldi Putra. "Morphological Characteristics and Elemental Composition of Magnetic Minerals from the Volcanic Activity of Lake Maninjau Sediments". Trends in Sciences 19, nr 8 (27.03.2022): 3428. http://dx.doi.org/10.48048/tis.2022.3428.
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Lake Maninjau has formed by the eruption of the Maninjau volcano, which spewed volcanic material to various places. This volcanic material contains various mineral-forming elements, one of which are magnetic minerals that accumulate in lake sediments. This research aims to determine the morphological characteristics and composition of magnetic mineral elements from volcanic activity in the sediments of Lake Maninjau, Agam Regency, Indonesia. Characteristics of morphological and composition of magnetic mineral elements originating from volcanic activity can describe volcanic eruptions in the past. So, this research is very important for paleo-eruption studies because it can be used as supporting information to determine the distribution of volcanic ash from a volcanic eruption in the past based on the magnetic properties of the material. The sample was selected from the core MAN 18-41B site 12 with a depth of 35 - 36 cm because it has a high magnetic susceptibility value. Morphological images of lake sediment magnetic minerals were viewed using a SEM instrument and EDS detector that shows the composition of the elements that arrange magnetic minerals. In general, the analysis of morphological images shows that the magnetic mineral grains in the Maninjau lake sediments are irregular and porous. This indicates that the magnetic minerals originate from volcanic activity. The image produced by Back Scattered Electron (BSE) has a difference in brightness on the surface of the magnetic grains, which indicates that the bright surface contains high Fe elements and the dark surface contains high Si. The spectrum generated by EDS shows that the dominant elements present in magnetic minerals in lake sediments are Fe, Ti and Si. Based on the morphology and elemental composition, it is indicated that the minerals contained in the sediments of Lake Maninjau come from volcanic activity.
HIGHLIGHTS
Lake Maninjau has formed by the eruption of the Maninjau volcano, which spewed volcanic material to various places. This volcanic material contains various mineral-forming elements, one of which are magnetic minerals that accumulate in lake sediments
Characteristics of morphological and composition of magnetic mineral elements originating from volcanic activity can describe volcanic eruptions in the past
Morphological forms can provide information about the source of magnetic minerals derived because magnetic minerals have different properties, types, and morphology depending on the source
Maninjau Lake sediments are dominated by Iron (Fe), Silica (Si), and Titanium (Ti). Based on the morphological images and elemental composition, the magnetic minerals present in the Maninjau lake sediments are indicated to come from volcanic activity
GRAPHICAL ABSTRACT
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Basuki, Rajab, Nanang Dwi Ardi i Mimin Iryanti. "Analisis Sebaran Mineral Logam Pada Sedimentasi Batuan Di Daerah Kertajadi, Cidaun, Kabupaten Cianjur, Jawa Barat Menggunakan Metoda Geomagnet". Wahana Fisika 2, nr 1 (20.06.2017): 37. http://dx.doi.org/10.17509/wafi.v2i1.7019.
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Cidaun merupakan salah satu daerah pesisir pantai selatan yang terletak pada Kabupaten Cinajur Provinsi Jawa Barat. Salah satu kelebihan dari daerah pesisir pantai selatan Pulau Jawa adalah terdapat banyaknya mineral logam penghasil besi yang tersebar luas di sepanjang pesisir pantai. Oleh karena itu dilakukanlah eksplorasi untuk memetakan sebaran mineral logam yang ada di daerah Cidaun. Dalam melakukan eksplorasi mineral logam dibutuhkan suatu metode yang paling efektif yaitu eksplorasi geofisika dengan menggunakan metode geomagnet. Proses pengolahan data pada metode geomagnet dilakukan dengan menghitung nilai anomali magnetik dari medan magnetik total yang telah dilakukan koreksi terhadap koreksi harian dan koreksi IGRF. Kemudian dengan metode inversi data yang telah didapat dijadikan sebuah model. Selain itu dilakukan juga interpretasi kualitatif dan interpretasi kuantitatif. Interperetasi kualitatif dilakukan pada data yang telah dimodelkan menggunakan software surfer 11, apabila data tersebut terdapat anomali magnetik bernilai sangat tinggi yang berdekatan dengan nilai anomali magnetik bernilai rendah atau perubahan nilai anomali terjadi secara signifikan kemudian dilakukan proses interpretasi secara kuantitatif. Interpretasi kuantitatif pada penelitian ini dengan dilakukan deliniasi berupa proses sayatan pada perbedaan nilai anomali magnetik yang terjadi perubahan secara signifikan. Tahap selanjutnya data dari proses sayatan tersebut kemudian dilakukanlah pemodelan menggunakan software mag2dc untuk mengetahui sebaran mineral logam dapa daerah tersebut. Berdasarkan data yang telah diolah pada daerah Kertajadi, Cidaun, Kabupaten Cianjur, Jawa Barat dengan koordinat 698283 easting - 757162 easting dan 9180169 northing - 9171050 northing memiliki rentang nilai anomali magnetik -5 nT – 145 nT. Sedangkan nilai anomali magnetik pada daerah yang telah dilakukan proses sayatan memiliki rentang nilai 84.18 nT - 119.69 nT dengan nilai susptibilitas -0.041000 – 0.050001. Dari rentang nilai suseptibilitas tersebut diduga sebaran mineral yang yang memiliki nilai suseptibilitas positif merupakan bijih besi sedangkan yang bernilai negatif merupakan lempung dan endapan pasir. Dari hasil dari penelitian ini diharapkan data tersebut dapat dijadikan informasi dan referensi bagi masyarakat, peneliti lain dan pengusaha tambang dalam eksplorasi mineral logam.Cidaun is one of the coastal areas of the southern coast located in the district of West Java province Cinajur. One of the advantages of the southern coastal areas of Java is that there are many ferrous metal mineral producer widespread along the coast. Therefore, the exploration was undertaken to map the distribution of metallic minerals in the area Cidaun. In conducting metal mineral exploration required a most effective method is a geophysical exploration using geomagnetic methods. Data processing on geomagnetic method is done by calculating the value of the magnetic anomalies of the total magnetic field has a daily correction of correction and correction IGRF. Then, with the inversion method of data has been obtained serve as a model. The researcher also interpretation of qualitative and quantitative interpretation. Qualitative Interperetasi performed on the data that has been modeled using software surfer 11, when the inputs are very high-value magnetic anomalies adjacent to the value of the magnetic anomalies of low value or change in value of the anomaly occurred significantly later performed quantitative interpretation process. Quantitative interpretation in this study conducted a process of delineation of the incision on the difference in magnetic anomaly change significantly. The next stage of the data are then perform the incision process modeling using software mag2dc to determine the distribution of metallic minerals onshore areas. Based on the data that has been processed in the region Kertajadi, Cidaun, Cianjur, West Java coordinate 698283 easting - 757162 easting and 9180169 northing - 917105 northing and has a value range of magnetic anomaly -5 nT - 145 nT. While the value of magnetic anomalies in the area that has been carried out the process of incisions have a range of values 84.18 nT - 119.69 nT with susptibilitas value -0.041000 - 0.050001. Of the value range susceptibility is suspected distribution of minerals that have a positive susceptibility value is the iron ore which is negative while the clay and sand deposits. From the results of this study are expected data can be made of information and reference for the community, other researchers and mining company in mineral exploration.
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Roberts, Andrew P. "Magnetic mineral diagenesis". Earth-Science Reviews 151 (grudzień 2015): 1–47. http://dx.doi.org/10.1016/j.earscirev.2015.09.010.
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Chen, Ci Yun, Shu Ming Wen, Yong Jun Xian, Qi Cheng Feng i He Fei Zhao. "Recovery of Iron from Tailings of Yangla Copper Ore by Magnetic Separation". Advanced Materials Research 634-638 (styczeń 2013): 3442–45. http://dx.doi.org/10.4028/www.scientific.net/amr.634-638.3442.
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Against the dwindling status of mineral resources at present, effective recycling of tailings resources is an effective way to alleviate the shortage of resources, and to improve enterprise efficiency. This study was aimed to recover iron from tailings of Yangla copper ore, Fe content of which was 15.31%, and the content of strong magnetic iron mineral was about 11%. Considering low content of weak magnetic iron mineral and its complex and costly recovery process, weak magnetic iron mineral did not be recovered, so strong magnetic iron mineral was only recovered in this study. Under no grinding condition, Fe recovery of 6.47% with iron grade of 60.87% was obtained. It effectively recovered strong magnetic minerals from tailings, and got enterprise increase additional revenue with good economic benefits.
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Vistarani, Arini Tiwow, Arsyad Muhammad, Sulistiawaty, Jeanne Rampe Meytij i Indira B. Tiro Winda. "Analysis of Magnetic Mineral Types of Iron Sand at Sampulungan Beach, Takalar Regency Based on Magnetic Susceptibility Values". Materials Science Forum 967 (sierpień 2019): 292–98. http://dx.doi.org/10.4028/www.scientific.net/msf.967.292.
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Analysis on magnetic minerals of iron sand in Sampulungan Beach, Takalar Regency based on magnetic susceptibility value has been conducted. Iron sand was taken on 30 points and extracted using a rod magnet, then measured magnetic susceptibility using Bartington susceptibility meter MS2 with the MS2B sensor. Furthermore, types of magnetic minerals were analyzed based on the value of magnetic susceptibility. The results showed that the percentage of magnetic mineral was higher along the trajectory near residential areas. Magnetic susceptibility values ranged from 33932.62 x 10-8 m3/kg to 71829.96 x 10-8 m3/kg. Based on the value of magnetic susceptibility, the dominant type of magnetic mineral in Sampulungan Beach is magnetite (Fe3O4) of 76 wt.%. The high magnetite potential in Sampulungan Beach can be further processed to be used in the metal industry.
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Kim, Kwanho, i Soobok Jeong. "Separation of Monazite from Placer Deposit by Magnetic Separation". Minerals 9, nr 3 (28.02.2019): 149. http://dx.doi.org/10.3390/min9030149.
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In this study, mineralogical analysis and beneficiation experiments were conducted using a placer deposit of North Korea, on which limited information was available, to confirm the feasibility of development. Rare earth elements (REEs) have vital applications in modern technology and are growing in importance in the fourth industrial revolution. However, the price of REEs is unstable due to the imbalance between supply and demand, and tremendous efforts are being made to produce REEs sustainably. One of them is the evaluation of new rare earth mines and the verification of their feasibility. As a result of a mineralogical analysis, in this placer deposit, monazite and some amount of xenotime were the main REE-bearing minerals. Besides these minerals, ilmenite and zircon were the target minerals to be concentrated. Using a magnetic separation method at various magnetic intensities, paramagnetic minerals, ilmenite (0.8 T magnetic product), and monazite/xenotime (1.0–1.4 T magnetic product) were recovered selectively. Using a magnetic separation result, the beneficiation process was conducted with additional gravity separation for zircon to produce a valuable mineral concentrate. The process resulted in three kinds of mineral concentrates (ilmenite, REE-bearing mineral, and zircon). The content of ilmenite increased from 32.5% to 90.9%, and the total rare earth oxide (TREO) (%) of the REE-bearing mineral concentrates reached 45.0%. The zircon concentrate, a by-product of this process, had a Zr grade of 42.8%. Consequently, it was possible to produce concentrates by combining relatively simple separation processes compared to the conventional process for rare earth placer deposit and confirmed the possibility of mine development.
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Xie, Xian, Zi Xuan Yang, Xiong Tong i Ji Yong Li. "Research on Exploration of Mineral Processing for a Iron Ore". Advanced Materials Research 1094 (marzec 2015): 397–400. http://dx.doi.org/10.4028/www.scientific.net/amr.1094.397.
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Iron ore minerals are mainly silicate-type iron minerals in raw ore, and its distribution rate was 51.93%; followed by magnetic iron, and its distribution rate was 36.81%; content and distribution rate of other minerals was very low; element grade of iron, phosphorus, sulfur, silica were 11.90%, 0.043%, 0.013% and 45.23%, the main gangue were silica and calcium oxide, recyclable iron minerals mainly is magnetic iron mineral. Due to the grade of iron of raw ore and the amounts of optional magnetite was relatively little, in order to investigate the optional of low-grade ore, weak magnetic separation test and weak magnetic separation tailings-strong magnetic separation test were put into effect.
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Susilawati, Susilawati, Aris Doyan, Muhammad Taufik, Wahyudi Wahyudi, Erin R. Gunawan, Kosim Kosim, Annisa Fitriani i Husniatul Khair. "Identifikasi Kandungan Fe Pada Pasir Besi Alam Di Kota Mataram". Jurnal Pendidikan Fisika dan Teknologi 4, nr 1 (28.05.2018): 105. http://dx.doi.org/10.29303/jpft.v4i1.571.
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The research on coastal sand in Mataram-Lombok city, located at several beaches, namely, Gading, Loang Baloq, Penghulu Agung, and Ampenan, is to determine the percentage of magnetic mineral content, metal content, and oxide mineral composition contained on those sand. Iron is a sediment containing magnetite (Fe3O4), maghemit (γ-Fe2O3) and hematite (α-Fe2O3) as the main mineral and several other minerals as a supporting mineral. Magnetic separation of natural sand by using a permanent magnet successfully separates the magnetic parts (iron sand) and non-magnetic. The separation results were then analyzed for Fe metal content, the quantity of metal content, and the quantity of oxide minerals using AAS, XRD, and XRF. The result of AAS analysis showed that Fe content in natural sand in Gading , Loang Baloq , Penghulu Agung and Ampenan Beach were 10,573 mg / gr, 12,816 mg / gr, 15,019 mg / gr, and 16,277 mg / gr, respectively. XRF analysis results in four locations have iron content respectively of 73.4%, 62.1%, 76.8%, and 69.8% in Hematite compound phase. As for the results of XRD analysis at these four locations the phases are magnetite and hematite phases.
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GHABRU, S. K., R. J. ST. ARNAUD i A. R. MERMUT. "USE OF HIGH GRADIENT MAGNETIC SEPARATION IN DETAILED CLAY MINERAL STUDIES". Canadian Journal of Soil Science 68, nr 3 (1.08.1988): 645–55. http://dx.doi.org/10.4141/cjss88-062.
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High gradient magnetic separation is a simple, inexpensive, nondestructive and rapid means of concentrating iron-bearing minerals to nearly monomineralic levels, particularly those present in undetectable proportions in soil clays. The use of variable magnetic flux density further allows subfractionation of the iron-bearing minerals. Besides iron content, the efficiency of high gradient magnetic separation is highly dependent on the particle size. The stability of suspension, suitable flow rates, contact time and the packing of steel wool are significant factors. The experimental setup used in this study was effective for 2–0.2 μm clays but modifications are necessary to adapt the technique to finer (< 0.2 μm) particle sizes. This resulted in the separation of three distinct mineral groups: (a) smectite, kaolinite, quartz and feldspars, which were entirely associated with the > 1.38 Tesla (T) fraction, suggesting that the smectite and kaolinite present in these soils contain little or no iron; (b) vermiculite, mixed-layer minerals and mica, which were present in all the high gradient magnetic separation fractions; and (c) amphiboles and hydroxy interlayered minerals concentrated only in the < 1.38 T fractions. The contents of hydroxy interlayered minerals and amphiboles increased with decreasing levels of magnetic flux density and concentrated in the < 0.20 T fraction, from which they were further separated into monomineralic separates. A very small proportion of the interlayered mineral present in the total clay had a non-iron-bearing (probably Al-Mg interlayered) counterpart. The iron-bearing vermiculite, mixed-layer minerals (weathering products of biotite) and mica showed different iron contents. Key words: Magnetic separation, iron-bearing minerals, clay mineralogy, X-ray diffraction, scanning electron microscopy
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Silveira, Vitor E. P., Natália B. dos Santos, Daniel R. Franco, Emanuele F. la Terra, Joshua M. Feinberg, R. B. Scorzelli, Magda B. Fontes i in. "Environmental magnetism evidence for longshore drift distribution of Fe-bearing phases: An example from the Brazilian southeastern coastal region". Journal of Sedimentary Research 91, nr 11 (5.11.2021): 1133–50. http://dx.doi.org/10.2110/jsr.2020.089.
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ABSTRACT The accumulation of heavy minerals along a part of the southeastern Brazilian coast (northern coast of Rio de Janeiro State, Brazil) provides insight into sedimentary provenance and transport by longshore drift. In particular, recent work has focused on heavy minerals as tracers to determine sedimentary sources and transport pathways, indicating a mineral distribution according to the northward and southward coastal transport cells. There is also evidence of heavy-mineral transport by the Paraíba do Sul River. However, research has not been done in this area on the opaque fraction (iron oxides and oxyhydroxides), which are good tracers for provenance and distribution processes. Here we intend to: 1) characterize the spatial variation of the magnetic properties of heavy-mineral contents throughout a coastal area of the Itabapoana and Paraíba do Sul River mouths (state of Rio de Janeiro), 2) evaluate the contribution of coastal dynamics on the mineral distribution along this coastal area, 3) provide contributions on the provenance of iron-bearing minerals. Results indicate that a bimodal pattern was observed for the magnetic remanence of magnetite and hematite near the Paraíba do Sul River. For the northernmost section, goethite exhibits a gradual increase in concentration towards the central part of the study area. Additionally, higher heavy-mineral content is observed at the northern coastal section, which may be related to coastal morphology, which is exposed to high-energy beach processes. It is possible to verify three sampling groups in accordance with their magnetic properties: 1) the “southernmost” and 2) the “northernmost” groups, suggesting a mineral provenance related to the Paraíba do Sul and Itabapoana rivers, respectively, as possible major sources, and 3) another at the intermediate section of the area, possibly linked to the erosion of the Barreiras Formation bluffs. Results also show a correspondence between the variability of magnetic parameters and the main directions of the coastal transport cells.
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Firmansyah, Fikri, i Arif Budiman. "Pendugaan Mineralisasi Emas Menggunakan Metode Magnetik di Nagari Lubuk Gadang Kecamatan Sangir, Solok Selatan, Sumatera Barat". Jurnal Fisika Unand 8, nr 1 (2.01.2019): 77–83. http://dx.doi.org/10.25077/jfu.8.1.77-83.2019.
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Telah dilakukan penelitian tentang pendugaan mineralisasi emas di Nagari Lubuk Gadang, Kecamatan Sangir, Solok Selatan, Sumatera Barat. Penelitian ini menggunakan metode magnetik dengan tahapan yaitu akuisisi data lapangan, pengolahan data dan interpretasi data. Alat yang digunakan adalah Earth Magnetometer EM2 (Microteslas) AlphaLab.Inc. Perangkat lunak yang digunakan untuk membuat peta kontur adalah software Surfer 11 dan pemodelan 2D menggunakan software Mag2dc. Pengukuran medan magnetik dilakukan pada 50 titik pengamatan dengan luas daerah 670 m2. Hasil penelitian menunjukkan bahwa ditemukan mineral pembawa emas yaitu pirit dengan suseptibilitas magnetik 0.000035 – 0.005 SI, kalkopirit dengan suseptibilitas magnetik 0.000023 – 0.0004 SI, troilit dengan suseptibilitas magnetic 0.00061 – 0.0017 SI, pirhotit dengan suseptibilitas magnetik 0.00046 – 1.4 SI, dan siderit dengan suseptibilitas magnetik 0.0013 – 0.011 SI merupakan mineral sulfida magmatik yang terdapat dalam batuan metamorf dan sedimen. Disamping itu mineral emas juga berasosiasi dengan mineral magnetic yaitu batuan beku (intrusi) yaitu porfiri dengan suseptibilitas magnetik 0.00025 – 0.21 SI. Zona mineralisasi emas diperkirakan terletak pada kedalaman 5 meter sampai dengan 35 meter di bawah permukaan tanah.Kata kunci: Metode magnetik, mineralisasi emas, suseptibilitas.
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Kutina, Jan, i Patrick T. Taylor. "Satellite altitude magnetic anomalies - Implications for mineral exploration: A review". Global Tectonics and Metallogeny 8, nr 1-4 (1.01.2003): 89–105. http://dx.doi.org/10.1127/gtm/8/2003/89.
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Rahmanb, Md Aminur, Pradip Kumar Biswasb, Mohammad Nazim Zamanb, Md Yunus Miah, Tofazzal Hossain i SM Imamul Huq. "Characterization of the sand of Brahmaputra river of Bangladesh". Bangladesh Journal of Scientific and Industrial Research 47, nr 2 (28.07.2012): 167–72. http://dx.doi.org/10.3329/bjsir.v47i2.11448.
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The aim of this paper is to study on the mineralogy, morphology, magnetic property and composition of the sand of Brahmaputra River, Bangladesh. The sand has been collected from randomly selected seven places and separated by High Intensity Rolling Magnetic Separator into three fractions, viz. magnetic, para-magnetic and non-magnetic parts. The identifications of the valuable heavy minerals existing in these fractions have been performed. The valuable heavy minerals in the separated fractions have been counted under reflected and polarizing microscope and it is found that the magnetic fraction contains ilmenite, magnetite and garnet. The major grain size fraction of the magnetic fraction is 125 - 250 ?m (57.18%). Zircon, rutile, xenotime, monazite, sillimanite etc. have been counted in other two fractions. X-ray Diffraction (XRD), X-ray Fluorescence (XRF) and Isodynamic Separator have been applied for mineral assessment and to quantify the relative proportion of mineral species. DOI: http://dx.doi.org/10.3329/bjsir.v47i2.11448 Bangladesh J. Sci. Ind. Res. 47(2), 167-172, 2012
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Cavanough, G., i P. N. Holtham. "Rapid Characterization of Magnetic Separator Feed Stocks in Titanium Minerals Processing". Physical Separation in Science and Engineering 13, nr 3-4 (1.01.2004): 141–52. http://dx.doi.org/10.1080/14786470412331308033.
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Magnetic separation is widely used in the processing of titanium minerals. The expected mineral recoveries are assessed by performing laboratory magnetic separations of representative samples to determine the distribution of magnetic components. This is an inherently slow process performed on relatively small samples. This paper describes the development of an inductance based device to rapidly determine the mass distribution of the magnetic properties of a titanium mineral sample. The system is best described as an hourglass with mineral flowing from a hopper through a small inductance coil. The impedance of the coil is proportional to the mean magnetic susceptibility of the number of particles within the coil. An algorithm has been developed to determine the percentage of the feed material at each level of magnetic susceptibility from this measurement. The results are identical to those determined using a laboratory magnetic separation, and are obtained in a fraction of the time. Accuracy of the device has been proven by simulation and by testing of plant samples and comparing the results using the new system with measurements made using a magnetic separator.
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Corrans, Ian James, i Jan Svoboda. "Magnetic Separation in South Africa". Magnetic Separation News 1, nr 4 (1.01.1985): 205–32. http://dx.doi.org/10.1155/1985/17201.
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The use of magnetic separators in the various mineral processing facilities in South Africa is described. A large number are used to recover medium in dense medium plants. The manufacture of various types of magnetic separation machines by three local suppliers is highlighted. The potential use of highgradient and/or high–intensity magnetic separation in the recovery of gold, uranium, and phosphate minerals is discussed.
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Chen, Yong, Yong Sheng Song, Gui Ying Zhou i Wen Juan Li. "Recovery Pb, Zn and S from a Chinese Lead-Zinc Mine Beneficiation Plant Tailing". Advanced Materials Research 997 (sierpień 2014): 583–86. http://dx.doi.org/10.4028/www.scientific.net/amr.997.583.
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Detailed characterisation and recovery of galena, sphalerite, and pyrrhotite from the beneficiation plant tailing of YouXi, China, was investigated. Different characterisation techniques viz. size analysis, chemical analysis, mineral analysis by Mineral Liberation Analyser（MLA）were carried out. Based on the appreciable differences in specific gravity, floatability and magnetic susceptibility between the desired lead, zinc, sulphur minerals and the gangue minerals, the flow sheets comprising desliming, flotation and magnetic separation, was used to recover galena, sphalerite, and pyrrhotite values. A lead and zinc concentrate of Pb 16.02%, Zn 35.1% and sulphur concentrate assays 35% S and 56% Fe can be produced from the tailing.
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Bilalodin, Bilalodin. "KAJIAN SIFAT MAGNETIK DARI PASIR BESI PANTAI LOGENDING KABUPATEN KEBUMEN". Molekul 5, nr 2 (1.11.2010): 105. http://dx.doi.org/10.20884/1.jm.2010.5.2.83.
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Study on magnetic properties of iron sand on the Logending beach sand has been done. The research aims to identify the mineral content and characterization of magnetic properties on the Logending beach sand. The irond sand samples taken from the Logending beach with several lokation. Sand then dried, determined density and magnetic content is separated using a permanen magnet. The iron sand were analyzed using XRD ( X-ray difraction) and characterization of magnetic properties using the VSM (Vibrating sample magnetometer). The research shows that minerals are contained hematit (Fe2O3), with a value of susceptibility is 0.43 x10-6 m3/kg. The main magnetic mineral of iron sand from logending beach is paramagnetic.
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Cheng, Zhong Hang, Ke Xu Yu, Tong Lin Zhao i Xiao Li Wang. "Experimental Research on the Lean Magnetite of RongTian Mine Corporation by Single Magnetic Process". Advanced Materials Research 826 (listopad 2013): 29–33. http://dx.doi.org/10.4028/www.scientific.net/amr.826.29.
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In this paper, the mineral properties of the lean magnetite in RongTian mine corporation was studied, during which the analysis of the mineral properties, prelimenary separation on the lump mine, two-section grinding, one section fine screening and three-section low intensity magnetic separation process were carried out. The results showed that if the suitable mineral processing flowsheet is adapted, we can achieved such index:concentrate grade of 63.65%, Fe recovery of 47.12% based on the ore grade of 10.05%.. According to the experimental result analysis, most of the iron minerals could be used to support the steel production of LingGang Group.Single magnetic process proved to be an suitable and promising process to conduct the fine particles of lean magnitite.
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Agricola, J. N. M., J. L. Top i A. F. Fort. "Magnetic Separation of Weakly Magnatic Copper Minerals". Magnetic Separation News 2, nr 4 (1.01.1989): 191–95. http://dx.doi.org/10.1155/1989/57496.
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High Gradient Magnetic Separation of small (5-38 µm) weakly magnetic copper mineral particles from a copper concentrate and ore has been performed. In previous work coarser fractions of these minerals, bornite and chalcopyrite, were separated successfully. The recovery of the smaller particles in the magnetic fraction decreases but their grade increases compared to the results obtained on the larger particles. At a magnetic background field of 1.3 T the concentrate was upgraded from 72% bornite and chalcopyrite to 86% with a recovery of 82% and the ore from 16% magnetic minerals to 44% with a recovery of 72%.
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Dontsova, T., i L. Yanushevska. "MINERAL-BASED MAGNETIC NANOCOMPOSITE SORBENTS". WATER AND WATER PURIFICATION TECHNOLOGIES. SCIENTIFIC AND TECHNICAL NEWS 26, nr 1 (24.03.2020): 26–35. http://dx.doi.org/10.20535/2218-93002612020199286.
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Kim, In-Ho, i Yong-Jae Yu. "Magnetic Mineral Identification in Meteorites". Journal of the Mineralogical Society of Korea 24, nr 1 (31.03.2011): 31–36. http://dx.doi.org/10.9727/jmsk.2011.24.1.031.
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Proidak, Andrii, Mykhailo Gasyk i Yurii Proidak. "Research into phosphate mineral composition and waste phosphorite ore". Mining of Mineral Deposits 15, nr 1 (2021): 96–102. http://dx.doi.org/10.33271/mining15.01.096.
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Purpose. Theoretical and experimental studies of chemical and mineral composition and the structure peculiarities of phosphorites from Ukrainian deposits to define the degree of their suitability for other industries. Methods. The ore chemical composition was determined by conventional (wet) analysis using standard certified chemical reagents. The mineral composition was studied on the scanning electron microscope equipped with the attachment for the energy-dispersive electron microprobe analysis (EMPA) with the software for calculating the chemical composition of the studied sample microvolume. The petrographic analysis was carried out by the traditional methods of microscopic section preparation with subsequent identification and description of the minerals. The microscopic study of the original ore samples aimed at their mineral composition determination was conducted on the Nu optical microscope (Germany) both in transmitted and reflected light. The thin and polished sections prepared using the standard technology were used as samples. In the laboratory environment, the phosphorites were subjected to magnetic dressing in magnetic fields with different intensity. The experiments in the weak field were modelled with the help of the magnetic analyzer while the experiments in the strong magnetic field were modelled on the rotor separator. The flotation dressing method was studied on the laboratory mechanical flotation machine. Findings. It was found that phosphate nodules are rounded mineral formations of irregular shape; they consist of sand bound with the yellow-brown phosphate cement. Ore useful substance is a phosphorus-bearing mineral that by the element chemical composition corresponds to fluorocarbon-hydroxyl-apatite with the dominant content of Ca (45.23%), P (15.67%), and B (27.87%). The results of the integrated petrographic study of the phosphorite samples from the ore body of “Peremoha” area are presented. Originality.The study has revealed that phosphorus-containing substance in the phosphorite samples is the mass that cements barren minerals (mainly quartz, glauconite, calcite and plagioclase). Practical implications. According to the phosphate content level, the phosphorites from Malokamyshevatske, Iziumske and Sinichino-Yaremovske deposits can be treated as minerals for ferrophosphorus smelting. Keywords: ferrophosphorus, ore substance, phosphorite, mineral varieties, petrography, apatite
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Faesal, Andi, Arifudin Idrus i Djoko Wintolo. "PROMINE". PROMINE 5, nr 2 (3.01.2017): 48–53. http://dx.doi.org/10.33019/promine.v5i2.918.
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The research sites are located in the village of Berambang, Sekotong District, West Lombok Regency,West Nusa Tenggara Province. This area was dominated by volcanic rocks composed of dasiticvolcanic rock, diatrema breccia, and diorite intrusion. Berambang area shows alteration in the form ofpotassic, propylitic, advanced argillic, and argillic alterations where in some places accompanied bypyritisation and stockwork structure, the type of mineralization in this area is a porphyry copper-goldtype. In the potasic alteration zone there are minerals that have a strong anomaly response to themagnetic due to the presence of oxide minerals magnetite (Fe2O3). Mineral sulfides such as pyrite(FeS2) and chalcopyrite (CuFeS2) will also provide significant anomalous responses that have anabundance of 2-5% in the potassic zone. In a propylitic alteration zone characterized by chlorite,calcite and epidote minerals that do not respond to magnetic anomalies, the presence of pyriteminerals, hematites and chalcopyrite with abundance of ≤1% will provide some magnetic anomaly inthe propylitic zone. As for advanceargillic alteration zones characterized by mineral andalusite, aluniteand quartz, there will not be any magnetic anomalies, the phenomena was due to the rarity ofmineralization in this zone gives an insignificant anomalous impact. Meanwhile, for the argillic zonecharacterized by mineral illite, kaolinite and smectite will not have anomalous magnetic impact, veryrare mineralization in the argillic zone so that the magnetic anomaly is not significant. From the floatingEuler 3D shows an anomalous source from a depth of 0 meters to a depth of more than 400 meters.
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Xiao, Junhui, Wei Ding, Yang Peng, Tao Chen, Kai Zou i Zhen Wang. "Extraction of Nickel from Garnierite Laterite Ore Using Roasting and Magnetic Separation with Calcium Chloride and Iron Concentrate". Minerals 10, nr 4 (15.04.2020): 352. http://dx.doi.org/10.3390/min10040352.
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In this study, segregation roasting and magnetic separation are used to extract nickel from a garnierite laterite ore. The garnierite laterite ore containing 0.72% Ni, 0.029% Co, 8.65% Fe, 29.66% MgO, and 37.86% SiO2 was collected in the Mojiang area of China. Garnierite was the Ni-bearing mineral; the other main minerals were potash feldspar, forsterite, tremolite, halloysite, quartz, and kaolinite in the garnierite laterite ore. The iron phase transformations show that nickel is transformed from (Ni,Mg)O·SiO2·nH2O to a new nickel mineral phase dominated by [Ni]Fe solid solution; and iron changed from Fe2O3 and FeOOH to a new iron mineral phase dominated by metal Fe and Fe3O4 after segregation roasting. Ferronickel concentrate with Ni of 16.16%, Fe of 73.67%, and nickel recovery of 90.33% was obtained under the comprehensive conditions used: A roasting temperature of 1100 °C, a roasting time of 90 min, a calcium chloride dosage of 15%, an iron concentrate dosage of 30%, a coke dosage of 15%, a coke size of −1 + 0.5 mm, a magnetic separation grinding fineness of <45 μm occupying 90%, and a magnetic separation magnetic field intensity of H = 0.10 T. The main minerals in ferronickel concentrate are Fe, [Ni]Fe, Fe3O4, and a small amount of gangue minerals, such as CaO·SiO2 and CaO·Al2O3·SiO2.
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Li, Xiu Juan, Si Qing Liu, Yang Zhao i Ting Ting Li. "Tin Recovery from a Cassiterite-Bearing Magnetite Refractory Ore". Applied Mechanics and Materials 543-547 (marzec 2014): 3721–24. http://dx.doi.org/10.4028/www.scientific.net/amm.543-547.3721.
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s. Situated in Honghe Municipality of China, a magnetite-bearing cassiterite ore deposit is characterized by iron and tin minerals association in the oxide ores. Magnetite is the main iron mineral containing fine-sized cassiterite that should be recovered. Except for the complex mineral composition, the valuable minerals are finely disseminated in the ore, a joint process of magnetic and gravity concentration was used to process the ore. Results show that, a tin concentrate and a tin middlings can be obtained in processing the tailings of Low-intensity magnetic separation (LIMS), assaying 31.76% Sn and 1.98% Sn at the recovery of 46.18% and 13.36% respectively. The results provide some valuable reference in utilization of the tailings of the ore.
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Junian, Wahyu Eko, Agus Laesanpura, Andri Yadi Paembonan i Muhammad Arief Wicaksono. "Identification of gold mineralization zones of low sulfidation epithermal systems using geoelectrical and magnetic methods in Ciparay area, Cibaliung". Journal of Aceh Physics Society 10, nr 3 (22.08.2021): 70–79. http://dx.doi.org/10.24815/jacps.v10i3.18521.
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Abstrak. Cibaliung merupakan daerah pertambangan mineral yang berada di Provinsi Banten. Hal ini, dibuktikan dengan adanya lubang tambang emas di daerah Cikoneng dan Cibitung. Penelitian tentang geofisika penting dilakukan guna menemukan cadangan emas baru di daerah Ciparay yang terletak di Sebelah Tenggara Cikoneng dan Cibitung. Metode geofisika yang digunakan di antaranya magnetik, resistivitas, dan induced polarization (IP). Metode magnetik digunakan sebagai survei pendahuluan untuk menggambarkan keberadaan struktur geologi pengontrol mineralisasi emas. Melalui peta reduce to pole dapat diketahui adanya tanda-tanda keberadaan struktur geologi yang ditunjukkan oleh anomali negatif (-220 hingga -135 nT) di Bagian Barat Daya daerah penelitian. Hasil teknik edge detectors menunjukkan adanya pola struktur dengan arah Northwest (NW) dan North-Northeast (NNE) yang dominan berada di Bagian Barat Daya sebelah Utara daerah penelitian. Metode resistivitas dan IP digunakan sebagai survei detail untuk menentukan keberadaan mineral yang terkandung dalam batuan. Hasilnya menunjukkan bahwa zona potensi mineralisasi ditunjukkan oleh anomali tinggi (resistivitas 50 ohm.m dan chargeability 40 msec). Resistivitas tinggi diduga sebagai respons batuan induk andesitic sedangkan, nilai chargeability tinggi merupakan respons dari hadirnya mineral-mineral bijih seperti emas dan perak. Zona potensi mineralisasi berada pada posisi patok 350-800 dengan arah persebaran mengikuti arah struktur geologi pengontrolnya yaitu NW dan NNE. Abstract. Cibaliung is a mineral mining area located in Banten Province. The area including gold mining in Cikoneng and Cibitung areas. Geophysical research is important to find new gold reserves at the Ciparay area, located in the Southeast of Cikoneng and Cibitung. Geophysical methods used include magnetic, resistivity, and IP. The magnetic method was applied as a preliminary survey to delineate the presence of the geological structure controlling the gold mineralization. Based on the RTP map, signs of the presence of geological structures are shown by anomalies -220 to -135 nT in the Southwestern part of the study area. The results of edge detector techniques show the existence of structural patterns in the direction of NW and NNE which are dominant in the Southwestern North of the study area. The resistivity and IP methods are employed for detailed investigation in order to obtain to determine the presence of minerals contained in rocks. The results show that the mineralized zones are indicated by high resistivity ( 50 ohm.m) and high chargeability ( 40 msec). High resistivity response is caused by andesitic source rock whereas, high chargeability response is related to the presence of ore minerals such as gold and silver. The mineralization prospect zone is indicated at the position of 350-800 and its direction corresponds to the direction of its geological structure namely NW and NNE.Keywords: New gold reserves, Negative magnetic anomalies, High resistivity, High chargeability.
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Arrazi, Miftahul, Hamdi Rifai, Fatni Mufit i Harman Amir. "Magnetic Susceptibility of Pumice at Mount Singgalang, West Sumatera". MANAZHIM 5, nr 2 (1.08.2023): 945–56. http://dx.doi.org/10.36088/manazhim.v5i2.3623.
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Volcanic activity produces eruptions that release pyroclastic material at the time of the explosion. Mount Singgalang is a volcano that has experienced an eruption after 1600. Several types of volcanic rocks around the Mount Singgalang area are Basalt, Andesite, Tuff Breccia, Lava Breccia, and Pumice Tuff. Pumice is formed when saturated liquid magma gas bursts like a carbonated beverage and soon cools, causing the froth that results to solidify into a glass full of gas bubbles. Some minerals contained in pumice are obsidian, cristobalite, feldspar, and tridymite. Pumice contains magnetic minerals, namely ilmenite (FeTiO3), and magnetite (Fe3O4). The purpose of this study is to quantify the magnetic susceptibility and quantity of pumice on Mount Singgalang in West Sumatera. When utilizing the Bartington Magnetic Susceptibility Meter to analyze a sample, magnetic susceptibility parameters are utilized to pinpoint the features of a magnetic rock mineral. The value of the magnetic susceptibility of pumice on Mount Singgalang, in West Sumatera has a value that varies between 2763.3 x 10-8m3/kg - 2192.1 x 10-8m3/kg. The results showed that the tested samples had antiferromagnetic magnetic mineral properties with frequency-dependent susceptibility values (χfd), indicating that all of the measured samples contained almost no superparamagnetic (SP) grains and were generally dominated by multi-domain (MD) grains.
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Just, J., N. Nowaczyk, A. Francke, L. Sagnotti i B. Wagner. "Climatic control on the occurrence of high-coercivity magnetic minerals and preservation of greigite in a 640 ka sediment sequence from Lake Ohrid (Balkans)". Biogeosciences Discussions 12, nr 16 (28.08.2015): 14215–43. http://dx.doi.org/10.5194/bgd-12-14215-2015.
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Abstract. The bulk magnetic mineral record from Lake Ohrid, spanning the past ca. 640 ka, shows a strong relationship to environmental conditions on glacial–interglacial and millennial time scales. During extremely cold glacials, a lower accumulation of organic matter and likely enhanced mixing of the water-column coincides with the presence of greigite, whereas greigite is absent in sediments deposited during less severe glacials. Those "non-greigite" glacial sediments are characterized by high concentration of high-coercivity magnetic minerals, which relates to enhanced erosion of soils that had formed during the preceding interglacials. In contrast, magnetite dominated magnetic mineral assemblages characterize interglacial deposits and most likely originate from detrital particles of physically weathered rocks. Superimposed on the glacial–interglacial behavior are millennial scale oscillations in the magnetic mineral composition that parallel variations in summer insolation. Likewise to the process on glacial–interglacial time-scales, low summer insolation and a retreat in vegetation resulted in enhanced erosion of soil material. Our study highlights that rock-magnetic studies, in concert with geochemical and sedimentological investigations, provide a multi-level contribution to environmental reconstructions, since the magnetic properties can mirror both, environmental conditions on land and intra-lacustrine processes.
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Chen, Yong, Jiankang Wen, Yongsheng Song, Wenjuan Li, Shuang Liu i Ying Liu. "Mineralogical Characteristics of Pegmatite Tailings and Beneficiation Assessment of Pollucite in Recovering Cesium". Minerals 12, nr 5 (27.04.2022): 541. http://dx.doi.org/10.3390/min12050541.
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The technological mineralogical characteristics of cesium-containing minerals in tailings were examined by means of chemical analysis, the energy spectrum analysis method, and MLA (mineral liberation analyzer) to determine the element content, phase analysis, associated mineral components, degree of liberation, particle size, etc. The results showed that the samples mainly contained spodumene, quartz, feldspar, mica, and other minerals. Pollucite was the main cesium-containing mineral in the sample, which had a cesium oxide content that was as high as 34.58%. The mineral content of pollucite in the sample was relatively low—only 1.23%. The pollucite monomer content and the amount of rich intergrowth was 85.25%, and the metal distribution of cesium in the +0.074 mm sample was as high as 87.06%. Spodumene was the main mineral associated with pollucite. The beneficiation evaluation of this tailing sample was conducted using a combined process that integrated desliming, magnetic separation, and froth flotation, and a pollucite concentrate containing 4.45% Cs2O was obtained with a 63.71 recovery rate. This indicates that little pollucite was removed by means of desliming and magnetic separation before froth flotation recovery, but during the froth flotation stage in spodumene and feldspar, a large pollucite loss was observed. Therefore, to improve pollucite recovery, a pollucite-specific adsorption reagent should be synthesized.
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Qiao, Qingqing, John D. A. Piper i Zhuangzhuang Lv. "Multivariate Analysis of Magnetic Parameters and Trace Metals in Atmospheric Dustfall and its Environmental Implications in Northern China". Minerals 12, nr 12 (12.12.2022): 1598. http://dx.doi.org/10.3390/min12121598.
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Magnetic measurement was combined with geochemical analysis to investigate the trace metal pollution of atmospheric dustfall from rural areas of Inner Mongolia and urban regions of Hebei province in northern China. It is found that the type of magnetic mineral within atmospheric dustfall samples in Inner Mongolia is similar to those found in Hebei province, but the atmospheric dustfall samples in Inner Mongolia have lower magnetic mineral concentrations and finer particles. Linear multiple regression analyses show that the relationship between magnetic parameters and trace metals is found to vary between the contrasting rural and urban areas, and is controlled by the different source magnetic minerals. The concentration- and type-dependent magnetic properties of the particles correlated strongly with the concentrations of trace metals derived from natural processes, and the grain size-dependent magnetic parameters correlated negatively and significantly with the concentrations of trace metals derived from anthropogenic activities.
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Righi, D., i P. Jadault. "Improving soil clay minerals studies by high-gradient magnetic separation". Clay Minerals 23, nr 2 (czerwiec 1988): 225–32. http://dx.doi.org/10.1180/claymin.1988.023.2.09.
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AbstractHigh-gradient magnetic separation (HGMS) performed on the clay fraction (< 1 µm) of acid soils facilitates the separation and concentration of mineral fractions according to their Fe and Mg contents. As a result, smectitic layers formed by weathering of a chlorite were identified although they were not detected in the bulk sample. The concentration in the non-magnetic fraction of minerals with an intergrade vermiculite-chlorite behaviour enabled more accurate information to be obtained on these minerals.
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Jabłońska, Mariola, Marzena Rachwał, Małgorzata Wawer, Mariola Kądziołka-Gaweł, Ewa Teper, Tomasz Krzykawski i Danuta Smołka-Danielowska. "Mineralogical and Chemical Specificity of Dusts Originating from Iron and Non-Ferrous Metallurgy in the Light of Their Magnetic Susceptibility". Minerals 11, nr 2 (20.02.2021): 216. http://dx.doi.org/10.3390/min11020216.
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This study aims at detailed characteristics and comparison between dusts from various iron and non-ferrous metal production processes in order to identify individual mineral phases, chemical composition, and their influence on the values of magnetic susceptibility. Various analytical methods used include inductively coupled plasma optical emission spectroscopy, X-ray diffraction, scanning electron microscopy, and Mössbauer spectroscopy integrated with magnetic susceptibility measurements and thermomagnetic analysis. Metallurgical wastes that have arisen at different production stages of iron and non-ferrous steel are subjected to investigation. The analyzed dust samples from the iron and non-ferrous metallurgy differ in terms of magnetic susceptibility as well as their mineral and chemical composition. The research confirmed the presence of many very different mineral phases. In particular, interesting phases have been observed in non-ferrous dust, for example challacolloite, which was found for the first time in the dusts of non-ferrous metallurgy. Other characteristic minerals found in non-ferrous metallurgy dusts are zincite, anglesite, and lanarkite, while dusts of iron metallurgy contain mostly metallic iron and iron-bearing minerals (magnetite, hematite, franklinite, jacobsite, and wüstite), but also significant amounts of zincite and calcite.
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Chanturiya, Valentine A., i Igor Zh Bunin. "Advances in Pulsed Power Mineral Processing Technologies". Minerals 12, nr 9 (19.09.2022): 1177. http://dx.doi.org/10.3390/min12091177.
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In Russia and globally, pulsed power technologies have been proposed based on the conversion of energy into a short-pulsed form and exposing geomaterials (minerals, rocks, and ores) to strictly dosed high-power pulsed electric and magnetic fields, beams of charged particles, microwave radiation, neutrons and X-ray quanta, and low-temperature plasma flows. Such pulsed energy impacts are promising methods for the pretreatment of refractory mineral feeds (refractory ores and concentration products) to increase the disintegration, softening, and liberation performance of finely disseminated mineral complexes, as well as the contrast between the physicochemical and process properties of mineral components. In this paper, we briefly review the scientific foundations of the effect of both high-power nanosecond electromagnetic pulses (HPEMP) and dielectric barrier discharge (DBD) in air on semiconductor ore minerals (sulfides, rare metals minerals) and rock-forming dielectric minerals. The underlying mechanisms of mineral intergrowth disintegration and changes in the structural and chemical states of the mineral surface when exposed to HPEMP and DBD irradiation are discussed. The high performance and potential limitations of pulsed energy impact and low-temperature plasma produced by DBD treatment of geomaterials are discussed in terms of the directional change in the process properties of the minerals to improve the concentration performance of refractory minerals and ores.
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Machel, H. G., i E. A. Burton. "Chemical and microbial processes causing anomalous magnetization in environments affected by hydrocarbon seepage". GEOPHYSICS 56, nr 5 (maj 1991): 598–605. http://dx.doi.org/10.1190/1.1443076.
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(Aero‐)magnetic anomalies have been reported from several commercial hydrocarbon accumulations. However, the processes responsible for such anomalies are relatively poorly understood. This paper conceptually discusses chemical and microbiological processes involved in generating anomalous magnetization related to hydrocarbon accumulations, including hydrocarbon seepage environments. Based on thermodynamic criteria and microbiologic activity, the formation and destruction of magnetic mineral assemblages can be predicted. Under the influence of hydrocarbons, magnetite and pyrrhotite are the most important magnetic minerals formed, and the most abundant magnetic mineral destroyed is hematite. Hence, the invasion of hydrocarbons may result in “positive,” “absent,” or “negative” magnetic contrasts relative to the total magnetization prior to hydrocarbon invasion, depending upon the amounts of authigenic magnetite and pyrrhotite formed relative to the amounts of hematite destroyed. Magnetism may be generated also by natural and anthropogenic processes that have no relationships to an underlying or adjacent hydrocarbon accumulation. Consequently, anomalous magnetization, even if associated with a hydrocarbon accumulation, may or may not be genetically related to it. Magnetic mineral assemblages and the resulting magnetic contrasts, such as those predicted in this paper, have been documented from some hydrocarbon seepage environments. Hence, anomalous magnetization can be used for hydrocarbon exploration in association with other surface exploration methods.
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Makarchuk, Oksana, Tetiana Dontsova, Anatolii Perekos, Alexander Skoblik i Yevhen Svystunov. "Magnetic Mineral Nanocomposite Sorbents for Wastewater Treatment". Journal of Nanomaterials 2017 (2017): 1–7. http://dx.doi.org/10.1155/2017/8579598.
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Magnetic nanocomposite sorbents for disposal of synthetic detergents from wastewater were synthesized. Obtained sorbents based on clay minerals (saponite, palygorskite, and spondyle clay) and magnetite were characterized by X-ray powder diffraction, Mössbauer spectroscopy, and ballistic method with Steinberg magnetometer. As a result, the average crystallite sizes of Fe3O4 nanoparticles in magnetic nanocomposites were 2–10 nm. Magnetic nanocomposites had superparamagnetic properties and were classified as soft magnetic materials. Comparison of sorption properties showed that magnetic composite sorbents had efficiency of adsorption removal of anionic surfactants and polyphosphates from aqueous solution 2–8 times higher compared to native clay minerals. Spent magnetic nanocomposites were effectively removed from the aqueous solution by magnetic separation. So, the efficiency of magnetic composites application and implementing of magnetic separation in adsorption purification was confirmed.
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Fauzi, Fauzi, i Zulfalina Zulfalina. "The Enhancement and Study of Sintering Time Effect Toward Content of Fe and Ti Compounds in Mineral Sand". Journal of Aceh Physics Society 9, nr 2 (10.05.2020): 55–58. http://dx.doi.org/10.24815/jacps.v9i2.16614.
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Pasir mineral merupakan salah satu mineral endapan (sedimen) dengan ukuran butir 0,074-5 mm, ukuran kasar (5–3 mm) dan halus (1 mm), ciri fisik dari pasir mineral ini diantaranya berwarna hitam dan cenderung tertarik oleh magnet. Berdasarkan beberapa penelitian yang telah dilakukan sebelumnya didapatkan bahwa kandungan utama dari pasir mineral berupa mineral ilmenit (FeTiO3), hematite (Fe2 - O3), dan magnetit (Fe3O4). Oleh karena itu maka pasir mineral ini sangat potensial untuk menghasilkan logam Fe, Ti, besi oksida dan pigmen titanium oksida. Dalam penelitian ini pengayaan kandungan besi dilakukan dengan metode separasi magnetik kemudian dikarakterisasi menggunakan XRF. Selanjutnya sampel tersebut disinter pada suhu 800oC, dengan variasi waktu penahanan selama 2, 4 dan 6 jam dan di karakterisasi menggunakan XRD, dimana hasilnya dianalisis dengan metode GSAS. Hasil pengujian XRF menunjukkan bahwa pasir mineral murni (bahan mentah) mempunyai kandungan Fe dan Ti masing–masing 14,38 dan 2,80% (%berat), sedangkan setelah separasi magnetik kandungan Fe dan Ti meningkat masing–masing menjadi 83,51 dan 7,25% (%berat). Hasil analisis GSAS menunjukkan bahwa waktu sintering berpengaruh terhadap fraksi berat Fe dan Ti, ini ditunjukkan senyawa Fe3O4 menurun dari 81,85 menjadi 77,76% dan Fe2O3 dari 11,44 menjadi 3,41%, sementara FeTiO3 meningkat dengan bertambahnya waktu sintering dari 6,72 menjadi 18,83%. The mineral sand is one of the mineral sediments with grain size of 0.074 – 5 mm, coarse size (5–3 mm) and fine (1 mm). The physical characteristics of this mineral sand are black color and tend to be attracted by magnets. Based on several studies, the main content of mineral sand is ilmenite (FeTiO3), hematite (Fe2O3), and magnetite (Fe3O4). Therefore mineral sand is very potential to produce Fe, Ti, iron oxide and titanium oxide pigments. In this study, the iron contents from raw materials were enhanced by magnetic separation method, and then the samples were characterized using XRF. Therefore they were sintered at temperature 800oC and variation of holding times 2, 4 and 6 h. The characterization of sample used XRD, where this result is analyzed using GSAS method. The XRF results showed that pure mineral sand (raw materials), has Fe and Ti contents of 14.38 and 2.80% (%weight), whereas after magnetic separation, the Fe and Ti contents increased to 83.51 and 7.25%, respectively. The analysis result of GSAS showed that the sintering time affected the weight fraction of Fe and Ti. These indicated that Fe3O4 decreased from 81.85 to 77.76% and Fe2O3 from 11.44 to 3.41%, while FeTiO3 raise with increasing of sintering time from 6.72 to 18.83%. Keywords: Enhancement, sintering time, compound content, mineral sand, GSAS
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Nirlipta, P. Nayak. "Assessment of Reuse Potential of Low-Grade Iron Ore Fines through Beneficiation Routes". i-manager's Journal on Material Science 10, nr 3 (2022): 30. http://dx.doi.org/10.26634/jms.10.3.19192.
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The iron ore deposits are sedimentary in nature. In 2021, approximately 1.95 billion metric tons of crude steel were produced globally, compared to 2.6 billion metric tons of usable iron ore. Iron ore is the primary source of the iron and steel industries, which in turn are essential to maintaining a strong industrial and economic base. Globally, 86% of the total iron produced is used in steelmaking. The most important iron ore minerals include hematite, magnetite, and taconite. The other iron ore minerals include goethite, laterite, etc. Hematite and magnetite are most commonly exploited for their iron values. Considering the non-renewable nature of iron ore, there is a paradigm shift towards the upgrading and beneficiation of low-grade iron ore. The widely accepted techniques for beneficiation include jigging, magnetic separation, enhanced gravity separation, froth flotation, etc. Owing to density contrast, iron can be separated from the gangue in simple jigging cycles. The electromagnetic laboratory-scale Wet High Intensity Magnetic Separator (WHIMS) removes fine magnetics and para-magnetics from mineral slurries. The physical and chemical properties of the ore mineral, as well as their mutual relationship, have a large impact on the beneficiation efficiency. In most of the processing units, the small, dense particles report to the tailing fraction, causing a significant loss in ore values. In such challenging cases, the enhanced gravity technique is useful. It is a combination of centrifugal force and gravitational force that facilitates the separation of low-density ore minerals and gangue. The paper focuses on the importance of a characterization study for the success of beneficiation.
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Li, Rukang, Pascal Manuel, Fabio Orlandi i Colin Greaves. "Magnetic ordering of the cryogenic magnetic cooling mineral gaudefroyite". Journal of Materials Chemistry A 6, nr 42 (2018): 21149–55. http://dx.doi.org/10.1039/c8ta08851a.
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Zhang, Han Ping, Xian Mei Chen, You You Tang i Qin Bo Cao. "Research on Removing Radioactivity Minerals Form Titanium Rough Concentration of Haibing". Advanced Materials Research 690-693 (maj 2013): 1127–31. http://dx.doi.org/10.4028/www.scientific.net/amr.690-693.1127.
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Titanium rough concentrate in Haibing contains ilmenite, rutile and other valuable minerals, and also radioactive mineral monazite. Ore minerals contain 42.08% of TiO2 and 4.92% of ZrO2. Radionuclide specific activities results shown that intensity of radioactivity of 226Ra, Th and 40K are 2142.2Bq/kg, 8964.2Bq/kg and 724.72Bq/kg respectively. Through integration process of shaking table-weak magnetic-dry high intensity magnetic-electric separation, qualified titanium concentrate, azurite concentrate and monazite were obtained, which recovers the voluble minerals at maximal extent.
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Heslop, David. "Numerical strategies for magnetic mineral unmixing". Earth-Science Reviews 150 (listopad 2015): 256–84. http://dx.doi.org/10.1016/j.earscirev.2015.07.007.
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Walker, M. S., i A. L. Devernoe. "Mineral separations using rotating magnetic fluids". International Journal of Mineral Processing 31, nr 3-4 (czerwiec 1991): 195–216. http://dx.doi.org/10.1016/0301-7516(91)90026-f.
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Sharma, P. V. "Magnetic method applied to mineral exploration". Ore Geology Reviews 2, nr 4 (sierpień 1987): 323–57. http://dx.doi.org/10.1016/0169-1368(87)90010-2.
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