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Journal articles on the topic 'Manganese ore'

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Author: Grafiati

Published: 4 June 2021

Last updated: 19 February 2022

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1

Polgári, Márta, Marc Philippe, Magda Szábo-Drubina, and Mária Tóth. "Manganese-impregnated wood from a Toarcian manganese ore deposit, Epleny mine, Bakony Mts., Transdanubia, Hungary." Neues Jahrbuch für Geologie und Paläontologie - Monatshefte 2005, no. 3 (March 17, 2005): 175–92. http://dx.doi.org/10.1127/njgpm/2005/2005/175.

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2

Wu, Wei, Peng Wang, Lu Lin, and Shi-fan Dai. "Manganese Ore Decomposition and Carbon Reduction in Steelmaking." High Temperature Materials and Processes 37, no. 8 (August 28, 2018): 741–47. http://dx.doi.org/10.1515/htmp-2017-0042.

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AbstractTo improve the direct alloying of manganese ore in steelmaking, the decomposition and carbon reduction of manganese ore was studied using a differential thermal analyzer and resistance furnace. The remaining material after manganese ore decomposition at 1,600 °C was a mixture of 43 % MnO, 40 % MnSiO3 and FeO, and 17 % MnSiO3. The remaining material after the carbon reduction of the manganese ore was a mixture of metal (30.8 % Mn7C3 and 16.1 % FeC3) and slag (2.5 % FeO, 5.1 % SiO2, and 18.8 % MnO). The high-temperature (1,200 ℃) decomposition and reduction of manganese ore produce manganese carbonate, manganese dioxide, and manganese salicylate sesquioxide. However, because it is not easy to decompose the manganese silicate in the manganese ore, the proportion of ore being reduced by carbon is small. Therefore, the increase of the manganese reduction of manganese silicate is critical to the direct alloying of manganese ore. Adding calcium oxide or magnesium oxide to the manganese ore improves the reduction of manganese ore, whereas adding slag from the initial stage or endpoint of the converter process has little effect on the manganese ore reduction.

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3

Polulyakh, L. A., V. Ya Dashevskii, and Yu S. Yusfin. "Manganese-ferroalloy production from Russian manganese ore." Steel in Translation 44, no. 9 (September 2014): 617–24. http://dx.doi.org/10.3103/s0967091214090125.

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4

Chinnaiah, Chinnaiah. "Occurrence and Distribution oof Manganese Ore Types in Chikkanayakanahalli Area." Indian Journal of Applied Research 4, no. 2 (October 1, 2011): 10–15. http://dx.doi.org/10.15373/2249555x/feb2014/36.

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5

Chinnaiah, Chinnaiah. "Beneficiation Studies of Manganese Ore of Kumsi, Shimoga, Southern India." Indian Journal of Applied Research 4, no. 2 (October 1, 2011): 16–18. http://dx.doi.org/10.15373/2249555x/feb2014/37.

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6

Dashevskiy, V. Ya, Yu S. Yusﬁn, G. S. Podgorodezkiy, and N. V. Baeva. "PRODUCTION MANGANESE FERROALLOYS OF MANGANESE ORE USINSKOYE FIELD." Izvestiya Visshikh Uchebnykh Zavedenii. Chernaya Metallurgiya = Izvestiya. Ferrous Metallurgy 56, no. 9 (March 25, 2015): 9. http://dx.doi.org/10.17073/0368-0797-2013-9-9-16.

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7

Dashevskii, V. Ya, Yu S. Yusfin, G. S. Podgorodetskii, and N. V. Baeva. "Production of manganese ferroalloys from Usinsk manganese ore." Steel in Translation 43, no. 9 (September 2013): 544–51. http://dx.doi.org/10.3103/s0967091213090052.

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8

Wu, Yan, Bin Shi, Huan Liang, Wen Ge, Chun Jie Yan, and Xiang Yang. "Magnetic Properties of Low Grade Manganese Carbonate Ore." Applied Mechanics and Materials 664 (October 2014): 38–42. http://dx.doi.org/10.4028/www.scientific.net/amm.664.38.

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Rapid reduction roasting of low grade manganese carbonate ore by coal and biomass fuels from Hunan, China was investigated. Magnetic separation behaviors and magnetic properties of raw manganese ore and roasted manganese ores were analyzed. After reduction by coal and biomass fuels, the manganese ores demonstrate a new Mn-Fe oxide phase, showing obvious mixed magnetic behaviors of ferromagnet and paramagnet, and the magnetic susceptibilities of roasting ores rapidly increase to almost two orders of magnitude in comparison of the raw ores. The results show that magnetizing roasting technology could enhanced the magnetic properties of the manganese ores about two orders of magnitude higher than raw manganese ore at low roasting temperature. Thereby, we deduce that the weak magnetic separation combined with high magnetic separation could be adequate for roasted manganese ore to satisfy the requirement of electrolytic manganese industry. Application of biomass in manganese ore roasting process is promising to the effective use of biomass and for decreasing the consumption of fossil fuels in the manganese industry.

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9

Park, Chung Yill, Young Man Roh, Jung Wan Koo, and Seung Han Lee. "Manganese exposure in ore crushing." Korean Journal of Occupational and Environmental Medicine 3, no. 1 (1991): 111. http://dx.doi.org/10.35371/kjoem.1991.3.1.111.

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10

Chow, Norman. "Manganese ore for lithium batteries." Metal Powder Report 67, no. 6 (November 2012): 34–36. http://dx.doi.org/10.1016/s0026-0657(12)70178-9.

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11

Paixdo, J. M. M., J. C. Amaral, L. E. Memória, and L. R. Freitas. "Sulphation of Carajás manganese ore." Hydrometallurgy 39, no. 1-3 (October 1995): 215–22. http://dx.doi.org/10.1016/0304-386x(95)00031-b.

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12

Ding, Peng, Quan Jun Liu, and Wen Hao Pang. "A Review of Manganese Ore Beneficiation Situation and Development." Applied Mechanics and Materials 380-384 (August 2013): 4431–33. http://dx.doi.org/10.4028/www.scientific.net/amm.380-384.4431.

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According to the characteristics of China's manganese ore resources, the present situation of manganese ore beneficiation in China is briefly introduced, and puts forward the development trend of China's manganese ore beneficiation.

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13

Ur Rehman, Waheed, Amin Ur Rehman, Faridullah Khan, Amir Muhammad, and Mohammad Younas. "Studies on Beneficiation of Manganese Ore through High Intensity Magnetic Separator." Advances in Sciences and Engineering 12, no. 1 (June 25, 2020): 21–27. http://dx.doi.org/10.32732/ase.2020.12.1.21.

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Upgradation techniques like wet sieving and magnetic separation were used to evaluate the beneficiation potential of manganese ore. During wet sieving, manganese content in raw ore was upgraded from 27% to a maximum value of 38% in the concentrate with a recovery of 30%. Size classification was found to have no measurable effect on manganese grade in magnetic separation. In the unsieved ground ore, manganese content of 45% was achieved with a recovery of 23% and Mn/Fe ratio of 19% at a magnetic intensity of 8500 Gauss. At the same operating conditions, SiO2 was reduced from 56% in the raw ore to 30% in the magnetic fraction. So, wet sieving technique leads to a comparatively lower manganese grade but better recovery. Conversely, a magnetic separation technique produced higher manganese grade but relatively lower recovery. Blending of the upgraded manganese ore with high grade iron ore can be done to achieve the required Mn/Fe ratio.

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14

Nokhrina, O. I., I. D. Rozhikhina, I. A. Rybenko, M. A. Golodova,, and A. O. Izrail’skii. "Hydrometallurgical enrichment of polymetallic and ferromanganese ore." Izvestiya. Ferrous Metallurgy 64, no. 4 (June 4, 2021): 273–81. http://dx.doi.org/10.17073/0368-0797-2021-4-273-281.

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The article presents the results of theoretical and experimental studies of leaching of polymetallic manganese-containing and ferromanganese ore. Thermodynamic calculations and experimental studies on enrichment of manganese-containing raw materials made it possible to determine the main technological parameters of the extraction of manganese, iron and non-ferrous metals, and to develop technological schemes for enrichment of various types of manganese-containing raw materials. The studies were carried out for polymetallic and ferromanganese ores of the Kaigadat deposit, the Selezen deposit, the Sugul site, located in the Kemerovo Region – Kuzbass. Before carrying out laboratory studies, the authors have performed thermodynamic analysis of ore leaching, chemical and X-ray structural analyzes of the samples. Laboratory tests were carried out on a multichamber autoclave unit MKA-4-75 using calcium and iron chlorides as solvents. Since the introduction of a reducing agent into the charge during leaching significantly improves the conditions for dissolution of oxides and hydroxides of manganese in calcium chloride, a series of experiments was conducted with the use of charcoal in the charge. Thermodynamic calculations have shown that the leaching process is fully implemented in the temperature range from 323 to 673 K. The results of the experiments confirmed the theoretical research results. The obtained data allowed the authors to propose a technological scheme for hydrometallurgical enrichment of polymetallic and ferromanganese ores to produce high-quality concentrates. All processed products are suitable for use. The use of optimal technological parameters of enrichment allows 95–97 % of manganese, up to 80 % of nickel, up to 99 % of cobalt, and 96–98 % of iron to be extracted from polymetallic manganese-containing raw materials. As a result of the deposition of these elements, high-quality concentrates of manganese, nickel, iron, cobalt are obtained. According to the proposed technological scheme for ferromanganese raw materials with a high content of silicates, it is possible to obtain high-quality concentrates of manganese and iron, while the extraction of manganese is 90–92 %, and of iron – 86–90 %.

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15

Kuleshov, V. N. "Manganese deposits: Communication 1. Genetic models of manganese ore formation." Lithology and Mineral Resources 46, no. 5 (August 24, 2011): 473–93. http://dx.doi.org/10.1134/s0024490211050038.

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16

Pani, Swatirupa, Saroj K. Singh, and Birendra K. Mohapatra. "Bog Manganese Ore: A Resource for High Manganese Steel Making." JOM 68, no. 6 (May 10, 2016): 1525–34. http://dx.doi.org/10.1007/s11837-016-1935-9.

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17

Vishniakov, Aleksei V., Iurii O. Fedorov, and Andrei Iu Chikin. "Improving the technology of manganese ore X-ray radiometric separation." Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal 1 (March 30, 2021): 79–87. http://dx.doi.org/10.21440/0536-1028-2021-2-79-87.

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Introduction. In addition to the classical methods of manganese ore processing, a lower-cost and more environmentally friendly technology of X-ray radiometric separation (XRS) has been developed in the last twenty years. The technology has been embraced by enterprises and applied to improve the efficiency of manganese deposits development. The article provides original results of the research carried out by Irgiredmet institute concerning the development of the procedure and technology of manganese ore XRS. Research methodology. The XRS methodology is based on the X-ray fluorescence (XRF) method of elements detection common in geophysical practice. A methodological task of these method is to find manganese in ore containing not only manganese but also iron, as soon as the two elements possess characteristic X-ray radiation (CXR) close in energy and mutually affect the accuracy of their detection by the X-ray fluorescence analyzers. The chosen research methodology allowed developing a new way of keeping records of the elements when solving the problems of manganese ore sampling and sorting. Research results. A new and efficient algorithm of sampling manganese and iron has been developed and tested on different types of manganese and ferromanganese ore. The ratio of CXR of the detected elements to the total sum of the scattered radiation (SR) and these elements CXR intensity set by a special spectral coefficient k is such universal criterion which promotes to more accurate detection of manganese and iron content in lumps.

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18

Bochkarev, G. R., K. A. Kovalenko, and G. I. Pushkareva. "Copper adsorption on Porozhinskoe manganese ore." Journal of Mining Science 51, no. 5 (September 2015): 1029–33. http://dx.doi.org/10.1134/s1062739115040236.

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19

Ya Dashevskii, V., A. L. Petelin, A. A. Aleksandrov, L. A. Polulyakh, and D. B. Makeev. "Dephosphorization of Manganese Ore Raw Materials." KnE Materials Science 5, no. 1 (March 17, 2019): 145. http://dx.doi.org/10.18502/kms.v5i1.3962.

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20

Coetsee, Theresa, Christian Reinke, Johannes Nell, and Petrus Christiaan Pistorius. "Reduction Mechanisms in Manganese Ore Reduction." Metallurgical and Materials Transactions B 46, no. 6 (July 22, 2015): 2534–52. http://dx.doi.org/10.1007/s11663-015-0414-y.

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21

von Plehwe-Leisen, E., and D. D. Klemm. "Geology and ore genesis of the manganese ore deposits of the Postmasburg manganese-field, South Africa." Mineralium Deposita 30, no. 3-4 (June 1995): 257–67. http://dx.doi.org/10.1007/bf00196361.

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22

Ohler-Martins, Karla, and Dieter Senk. "Direct Reduction of Mixtures of Manganese Ore and Iron Ore." steel research international 79, no. 11 (November 2008): 811–16. http://dx.doi.org/10.1002/srin.200806203.

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23

Pani, Swatirupa, Nilima Dash, B. K. Mohapatra, and S. K. Singh. "Siliceous Manganese Ore from Eastern India:A Potential Resource for Ferrosilicon-Manganese Production." High Temperature Materials and Processes 38, no. 2019 (February 25, 2019): 425–35. http://dx.doi.org/10.1515/htmp-2018-0081.

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AbstractSiliceous manganese ore, associated with the banded iron formation occurs in large volume in northern Odisha, India. It is a sub-grade ore containing 21% Mn, 60% SiO2 and 3% Fe, hence do not find any use and considered as waste. Such ore does not respond to any physical beneficiation techniques because of intricate microstructure and poor liberation of Mn-phase. It could only be up-graded to 32% Mn with 36% yield and 52% recovery by processing it through mineral separator followed by WHIMS. Siliceous manganese ore along with calcite and coke in appropriate ratio, when charged to a plasma reactor, a product with slag metal ratio of 2.5:1 was obtained within a period of 10 min. Electron probe micro-analysis of the metal confirmed it to be ferrosilicomanganese while the slag constitute of tricalcium silicate (C3S) with around 5% Mn in adsorbed state.

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24

Liang, Huan, Feng Zhou, Ze Ying Wu, Chun Jie Yan, and Wen Jun Luo. "Surface Characteristics and Flotation Behaviour of Low-Grade Manganese Ore." Advanced Materials Research 962-965 (June 2014): 361–69. http://dx.doi.org/10.4028/www.scientific.net/amr.962-965.361.

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Evaluation possibility of low grade manganese mineral from Hunan by froth flotation technique was investigated. Manganese mineral sample was characterized with mineralogical analysis, XRD, and SEM studies for its mineral content and surface characteristics. XRD analysis showed that the gangue contents of manganese minerals are constituted mainly by dolomite as a carbonate mineral, quartz and feldspar. SEM indicated that existence of rhodochrosite, which mainly fills in the dolomite minerals. The influences of important factors on manganese mineral flotation are investigated. The size of grind, pulp pH, dosages of depressant and collector are essential to the effective recovery of rhodochrosite in manganese mineral flotation.

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25

Sun, Da, Mao Lin Li, Can Hua Li, Rui Cui, and Xia Yu Zheng. "A Green Enriching Process of Mn from Low Grade Ore of Manganese Carbonate." Applied Mechanics and Materials 644-650 (September 2014): 5427–30. http://dx.doi.org/10.4028/www.scientific.net/amm.644-650.5427.

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The ammonium salt roasting method is proposed to enrich and recover Mn from low grade ore of manganese carbonate. It included a process of mixing the ore with NH4Cl by ball milling, roasting this mixed ore in pipe stove at 450°Cfor one hour and leaching the calcine with hot water to obtain MnCl2solution. Further, manganese is precipitated by NH3·H2Oand CO2released from roasting process, washing and drying to get concentrated manganese ore. The NH4Cl obtained by vaporizing the filtrate solution can be reused for the ammonium salt roasting process. The result indicates that Mn recovery rate can be reached to be more than 90%. This method is considered to be a green chemistry process to enrich and recover Mn from low grade ore of manganese carbonate.

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26

Sklyarov, E. V., A. V. Lavrenchuk, A. E. Starikova, V. S. Fedorovskii, and E. A. Khromova. "Genesis of manganese ore occurrences of the Olkhon Terrane." Петрология 27, no. 1 (March 13, 2019): 87–104. http://dx.doi.org/10.31857/s0869-590327187-104.

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Geological and mineralogical data are reported on the manganese occurrences of the Olkhon terrane (Western Baikal region), which are localized in metadolerites of the Ustkrestovsky Complex, high-temperature mafic hornfels, granites, calcitic marbles and calciphyres, and occasionally are developed as separate veins in gneiss granites or small lenses in quartzites. Most of them are made up of high-temperature mineral assemblages (Opx + Cpx + Pl + Ilm ± Grt± Bt ± Amp), the main manganese carriers in which are ferrorhodonite (33–36 wt % MnO), orthopyroxene (6–12 wt % MnO), and ilmenite (3–16 wt % MnO). Obtained data are in conflict with traditional concepts that these rocks are gondites (manganese-rich metamorphosed sediments) or that manganese flux in carbonate sediments was related to the volcanic activity that occurred simultaneously with sedimentation at about 500 Ma. The diversity of manganese occurrences was produced by metasomatic processes that occurred almost simultaneously with regional metamorphism and emplacement of subalkaline mafic bodies during collisional tectonogenesis (about 470 Ma).

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27

Zulhan, Zulfiadi, Irfan Muhammad Fauzian, and Taufiq Hidayat. "Ferro-silico-manganese production from manganese ore and copper smelting slag." Journal of Materials Research and Technology 9, no. 6 (November 2020): 13625–34. http://dx.doi.org/10.1016/j.jmrt.2020.09.079.

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28

Kononov, Ring, Oleg Ostrovski, and Samir Ganguly. "Carbothermal Solid State Reduction of Manganese Ores: 1. Manganese Ore Characterisation." ISIJ International 49, no. 8 (2009): 1099–106. http://dx.doi.org/10.2355/isijinternational.49.1099.

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29

Xie, Chao, Longjun Xu, Tiefeng Peng, Kun Chen, and Jing Zhao. "Leaching process and kinetics of manganese in low-grade manganese ore." Chinese Journal of Geochemistry 32, no. 2 (April 19, 2013): 222–26. http://dx.doi.org/10.1007/s11631-013-0625-3.

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30

Xu, Qin, Xiao Ling Jin, Yue Hua Chen, and Xi Jun Hu. "Applications of Indigenous Plants on the Restoration of the Manganese Ore Lands." Advanced Materials Research 414 (December 2011): 335–40. http://dx.doi.org/10.4028/www.scientific.net/amr.414.335.

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The ecosystem structure and functions of the manganese ore lands have been severely degraded. In order to attain the purpose of ecological recovery and landscape restoration, this paper first summarizes the characteristics of the manganese ore lands and the current status on the restoration, then lists the species of indigenous plants that apply to the restoration of the manganese ore lands by starting with vegetation restoration from the perspective of landscape, and finally elaborates the application of indigenous plants in different arrangement modes.

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31

Faria, G. L., J. A. S. Tenório, N. Jannotti, and F. G. da S. Araújo. "A geometallurgical comparison between lump ore and pellets of manganese ore." International Journal of Mineral Processing 137 (April 2015): 59–63. http://dx.doi.org/10.1016/j.minpro.2015.03.003.

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32

Ts, Zagarzusem, Sugir-Erdene N, Orgilbayar B, Sukhbat S, Soyolmaa Ts, Unursaikhan B, Baasanjav D, Jargalsaikhan L, and Otgonjargal E. "Technological study on the flotation process of Manganese Ore." Bulletin of the Institute of Chemistry and Chemical Technology, no. 8 (December 31, 2020): 50–54. http://dx.doi.org/10.5564/bicct.v0i8.1478.

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This study demonstrated the importance of appropriate flotation conditions and reagent dosage for the separation of standard manganese concentrates from low-grade manganese ores. The research object used Unagad manganese ore located in Dornogovi province. The main mineral of manganese ores was pyrolusite (MnO2). According to the chemical element analyses, the content of manganese in the primary ore was Mn-17.31%. XRD analyses revealed minerals such as quartz, pyrolusite, albite, anorthite, anorthoclase, orthoclase, and hausmannite. This study conducted the beneficiation of manganese ore by the froth flotation method. Manganese ore beneficiation tests were performed for the flotation method under the following conditions: the collector dosage with 900 g/t, 1100 g/t, 1300 g/t, 1500 g/t, and 1700 g/t, the dosage of the depressant as 570 g/t, 670 g/t, 770 g/t, and 870 g/t, and the frother with 900 g/t, pH value 8, the grade of -0.074 mm was 60%, 70%, 80%, 90% respectively. Beneficiation tests performed in the optimum conditions resulted in concentrate with Mn = 32.37%, the recovery was 57.33%, and the yield was 30%. As a result of the flotation enrichment of manganese ore, а concentrate containing 32.37% manganese was obtained. Манганы хүдрийг флотацийн аргаар баяжуулах технологийн судалгаа Хураангуй: Энэхүү судалгаагаар бага агуулгатай манганы хүдрээс стандартын шаардлага хангасан манганы баяжмалыг гарган авахад флотацийн зохистой горим, урвалжийн зарцуулалт хэрхэн нөлөөлж байгааг тогтоов. Судалгааны объектоор Дорноговь аймгийн нутагт орших Унагадын манганы ордын хүдрийг ашигласан бөгөөд хүдрийн голлох эрдэс нь пиролюзит юм. Элементүүдийн химийн шинжилгээгээр анхдагч хүдэр дэх манганы агуулга 17.31% байна. Рентген дифрактометрийн шинжилгээгээр кварц, пиролюзит, альбит, анортит, анортоклаз, ортоклаз, гаусманит зэрэг эрдсүүд байгаа нь тогтоогдсон. Манганы хүдрийг флотацийн аргаар баяжуулах цуврал туршилтуудыг цуглуулагчийн зарцуулалт 900 г/т, 1100 г/т, 1300 г/т, 1500 г/т, 1700 г/т, дарагчийн зарцуулалт 570 г/т, 670 г/т, 770 г/т, 870 г/т, хөөсрүүлэгч 900 г/т, рН-8, ширхэглэлийн хэмжээг -0.074 мм ангийн агуулга 60%, 70%, 80%, 90% гэсэн нөхцлүүдэд явуулсан. Туршилтын дүнд цуглуулагчийн хэмжээ 1500 г/т, хөөсрүүлэгч 900 г/т, дарагч 670 г/т, -0.074 мм ангийн агуулга 70%, рН-ийн утга 8 гэсэн хамгийн тохиромжит нөхцөлд баяжмал дахь металл авалт 57.33%, гарц 30% байж, харин Mn-ний агуулга 32.37%-тай баяжмал гарав. Түлхүүр үг: Манганы баяжмал, флотаци, олейны хүчил, натрийн силикат

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33

Muthalib, Nurhidayah, Norazharuddin Shah Abdullah, Hashim Hussin, and Suhaina Ismail. "Mineralogical Characteristics and Quantification of Mineral Phases in Malaysian Low Grade Manganese Ore." Materials Science Forum 888 (March 2017): 453–57. http://dx.doi.org/10.4028/www.scientific.net/msf.888.453.

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The aim of this work is to study the quantification of crystalline and amorphous content of manganese ore. The mineralogical characteristics and mineral phases of Malaysian low grade manganese ore are investigated using spiking method technique. Manganese ore was mixed with an internal standard of rutile and analyzed by Rietveld refinement with SIROQUANT. The refinement qualification and quantification indicated three phases which are pyrolusite (MnO2) with 1.1%, goethite (α-FeOOH) with 0.5% and quartz (SiO2) with 30.9%. From the calculation, sample consisted more amorphous content which is 0.6 compared to crystalline (0.4). This revealed that the ore is in amorphous form.

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34

Vafeas, N. A., L. C. Blignaut, K. S. Viljoen, and P. Le Roux. "An investigation into the 87Sr/86Sr radiogenic isotope geochemistry of the manganese ore of the Kalahari Manganese Field with a view on hydrothermal fluid flow and related rare earth element enrichments." South African Journal of Geology 122, no. 2 (June 1, 2019): 237–48. http://dx.doi.org/10.25131/sajg.122.0016.

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Abstract The Paleoproterozoic Kalahari Manganese Field is the largest known land-based manganese (Mn) deposit on Earth and comprises five erosional relics of the iron- and manganese-rich Hotazel Formation. A total of 19 manganese ore samples from the lower manganese ore horizon of the Hotazel Formation were selected for analysis based on their relative metasomatic alteration states. These samples range from primary diagenetic, classic supergene enriched, hydrothermally enriched (Wessels-type ore) and thrusted manganese ore. When normalised to Post-Archaean Australian shale composites, rare earth elemental analyses on the selected samples indicate significant relative enrichments within the thrusted manganese ore, an ore type that hasn’t been studied from a geochemical point of view, so far. A comparison between these respective enrichments and 87Sr/86Sr ratios indicates a distinct link between REE enrichments and associated alteration events, and a progressive increase in 87Sr/86Sr isotope values. An isotopic relationship between fluid infiltration events and REE redistribution within the Hotazel Formation has been established, highlighting unique isotope signatures necessary in better defining and characterising metasomatism within the Paleoproterozoic Kalahari Manganese Field.

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35

Leskó, Máté Zsigmond, Richárd Zoltán Papp, Boglárka Anna Topa, Ferenc Kristály, Tamás Vigh, and Norbert Zajzon. "Smectite appearance in the footwall of the Úrkút manganese ore deposit, Bakony Mts., Hungary." Central European Geology 62, no. 1 (January 24, 2019): 100–118. http://dx.doi.org/10.1556/24.62.2019.02.

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The Úrkút manganese ore deposit (Transdanubian Range, Hungary) is one of the largest manganese accumulations to be formed during the Toarcian Oceanic Anoxic Event. In the past 60 years, the area was investigated intensively. The core storage facility of the manganese mine had more than 20,000 sample pieces. Most of these samples have never been investigated. During this study, which is the first widespread clay mineral study in the footwall of the Úrkút manganese ore deposit, we investigated 40 samples from seven boreholes (footwall rocks, black/gray shales below and above the first ore bed, and manganese carbonate ores). Although previous studies assumed that smectite is associated only with the ore beds, our research revealed its appearance in the footwall (Pliensbachian) as well. Simultaneously, tripoli (the local name of completely bleached chert) can also be found in the footwall. Based on the investigated samples, a sharp geochemical difference was detected between Pliensbachian and Toarcian sediments. In this paper, we try to trace the relationship between the smectite content of the footwall and the ore bed and compare these results with the observed geochemical changes. Based on the new data, we assume that the ore accumulation was caused by a flow system (upwelling-controlled ore formation).

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Chen, Ning Xin, Yong Bing Huang, and Jing Dong. "Lake Restoration of Arsenic Pollution by Manganese Ore." Advanced Materials Research 726-731 (August 2013): 1659–63. http://dx.doi.org/10.4028/www.scientific.net/amr.726-731.1659.

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Using manganese ore coated with small stones to adsorb arsenic from the contaminated water samples of Yangzonghai Lake, and several factors that may have impacts on the arsenic removal efficiency are analyzed. The result shows that the new adsorbent material has a great effect on arsenic removal. Temperature's effect on arsenic removal efficiency is not obvious. The arsenic removal efficiency increased dramatically in accordance with residence time within 0-660s, and then stabilized. The adsorption process is better when conducted in acidic conditions, the maximum adsorption rate reached 83.0% with the pH of 3.0 and it reached the minimum value of 14.7% when pH is 10. Fe3+ and Ca2+ can slightly promote manganese ore's adsorption of arsenic, and with anions CO32-, SiO32- , efficiency was slightly reduced. When fitting the kinetics data of arsenic removal by coated manganese ore, the adsorption process is correspondent with first-order reaction kinetics model. The adsorption isotherm is more close to the Freundlich isotherm model.

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Evdokimov, Aleksandr, and Benedict Pharoe. "Features of the mineral and chemical composition of the Northwest manganese ore occurrence in the Highveld region, South Africa." Journal of Mining Institute 248 (May 25, 2021): 195–208. http://dx.doi.org/10.31897/pmi.2021.2.4.

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The Northwest manganese ore mineralisation is located at a relative distance from traditionally known manganese mining areas in a new manganese-bearing region (Highveld) in the Northwest Province, Republic of South Africa. The ore occurrence was studied on farms: Buchansvale 61 IQ, Weltevreden 517 JQ, Rhenosterhoek 343 JP and Kafferskraal 306 JP. The data obtained from studying the geology of the area pointed out to interests regarding the development criterias for search of similar ore mineralisations in the northwest region of South Africa. The ore occurs predominantly in the form of powdered manganese wad, manganese nodules and crusts, confined to the karstic structures of the upper section of the dolomites. X-ray powder diffraction (XRD), Scanning electron microscopy with energy dispersive link (SEM-EDS) and X-ray fluorescence were utilized to unveil the mineral and chemical composition of the ore samples. The present study therefore presents the results on both chemical and mineral composition of manganese ores, and their depth and longitudinal distribution. Karstic areas causing an increased local thickness of the ore body were identified. The geochemical and microspcopic study of the ores indicates their supergene nature. The main ore minerals includes cryptomelane, lithiophorite, purolusite, hollandite and romanechite associated with impurity components of Ba, Ce, Co, La, Cr, Zn and V.

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Ostrovski, O. I., and T. J. M. Webb. "Reduction of Siliceous Manganese Ore by Graphite." ISIJ International 35, no. 11 (1995): 1331–39. http://dx.doi.org/10.2355/isijinternational.35.1331.

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Gordon, Y., J. Nell, and Y. Yaroshenko. "Manganese Ore Thermal Treatment Prior to Smelting." KnE Engineering 3, no. 5 (July 17, 2018): 71. http://dx.doi.org/10.18502/keg.v3i5.2656.

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Xie, Zhuoyu, Yongbing Huang, Yang Cao, Lili Lin, and Min Huang. "Electrochemical desorption of high-iron manganese ore." DESALINATION AND WATER TREATMENT 123 (2018): 27–34. http://dx.doi.org/10.5004/dwt.2018.22337.

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Yücel,, Onuralp, and M. Emin Ari,. "Carbothermic Smelting Of Tavas Manganese Ore, Turkey." High Temperature Materials and Processes 20, no. 5-6 (December 2001): 345–52. http://dx.doi.org/10.1515/htmp.2001.20.5-6.345.

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Ye Lianjun, Fan Delian, and Yang Peiji. "Characteristics of manganese ore deposits in China." Ore Geology Reviews 4, no. 1-2 (November 1988): 99–113. http://dx.doi.org/10.1016/0169-1368(88)90006-6.

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43

Мырзабеков, Б. Э., Э. М. Ли, Т. Э. Гаипов, and А. Б. Маханбетов. "STUDY OF THE MATERIAL COMPOSITION OF THE SAMPLE MANGANESE-CONTAINING ORE DEPOSITS “KARAMOLA”." SERIES CHEMISTRY AND TECHNOLOGY 6, no. 444 (December 15, 2020): 95–101. http://dx.doi.org/10.32014/2020.2518-1491.103.

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In this work, the material composition of the ore of the Karamola Deposit is studied. A sample of manganese ore from the Karamola Deposit with a size of 0-120 mm was received for research on the material composition. The manganese mineralization of the sample is represented by the mineral series polyanite-pyrolusite and WADA-psilomelane. Mineral secretions are crystalline earthy structures and mixed formations. Manganese oxides are distributed almost throughout the entire mass of the rock. They are represented by crystallized gel formations, soot, and skeletal structures. Ore gels permeate the rock through cracks, cleavages, leaching voids, pores, cleavage planes and penetrate between the scales of layered minerals and form a variety of forms in the mass of the rock: individual strokes, thread-like cuts, veins, edges, layers, nests. Replacement solutions are siliceous or manganese-siliceous in nature and color the rock in the corresponding color with mineral microparticles: black – manganese, red and red – iron. Rock-forming minerals are mainly represented by quartz. The granulometric composition of an ore sample crushed to the minus 2.0+0 mm class was determined.

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Zhou, Xianlin, Yanhong Luo, Tiejun Chen, and Deqing Zhu. "Enhancing the Reduction of High-Aluminum Iron Ore by Synergistic Reducing with High-Manganese Iron Ore." Metals 9, no. 1 (December 22, 2018): 15. http://dx.doi.org/10.3390/met9010015.

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How to utilize low grade complex iron resources is an issue that has attracted much attention due to the continuous and huge consumption of iron ores in China. High-aluminum iron ore is a refractory resource and is difficult to upgrade by separating iron and alumina. An innovative technology involving synergistic reducing and synergistic smelting a high-aluminum iron ore containing 41.92% Fetotal, 13.74% Al2O3, and 13.96% SiO2 with a high-manganese iron ore assaying 9.24% Mntotal is proposed. The synergistic reduction process is presented and its enhancing mechanism is discussed. The results show that the generation of hercynite (FeAl2O4) and fayalite (Fe2SiO4) leads to a low metallization degree of 66.49% of the high-aluminum iron ore. Over 90% of the metallization degree is obtained by synergistic reducing with 60% of the high-manganese iron ore. The mechanism of synergistic reduction can be described as follows: MnO from the high-manganese ore chemically combines with Fe2SiO4 and FeAl2O4 to generate Mn2SiO4, MnAl2O4 and FeO, resulting in higher activity of FeO, which can be reduced to Fe in a CO atmosphere. The main products of the synergistic reduction process consist of Fe, Mn2SiO4, and MnAl2O4.

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Vafeas, Nicholas A., Lauren C. Blignaut, and Karel S. Viljoen. "Arsenic-bearing manganese ore of the Mukulu Enrichment in the Kalahari Manganese Field, South Africa: A new discrimination scheme for Kalahari manganese ore." Ore Geology Reviews 115 (December 2019): 103146. http://dx.doi.org/10.1016/j.oregeorev.2019.103146.

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Huang, Yong Bing, Xiu Ying Liu, Li Li Wang, Xiao Juan Li, and Shu Xin Tu. "Study on Arsenic Removal Efficiency and Mechanism of Titanium Modified Manganese Ore." Advanced Materials Research 356-360 (October 2011): 1061–65. http://dx.doi.org/10.4028/www.scientific.net/amr.356-360.1061.

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Natural manganese ore is a kind of arsenic removal mineral. It is low-cost and widely available. In order to enhance its removal efficiency and adsorption quantity of arsenic, this paper adopted TiCl4 to modify natural manganese ore and optimized the conditions of modification. The results showed that the best modification condition was: TiCl4 at a concentration of 10 mg•L-1, dipping time of 18h, pH 3.05, reaction time of 60 min; under these conditions, the removal rates of As (Ⅲ) and As (Ⅴ) respectively reached 94.87% and 99.31%, much higher compared with natural manganese ore (82.95% and 77.93%). The saturated adsorption quantity of As (Ⅲ) and As (Ⅴ) reached 3.48 mg•g-1 and 3.27 mg•g-1, each increasing 1.25 mg•g-1 and 1.21 mg•g-1. The adsorption of As (Ⅲ) by modified manganese ore fits the Freundlich adsorption isotherm, while As (Ⅴ) fits the Langmuir adsorption isotherm best.

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Ts, Zagarzusem, Baasanjav D, Sugir-Erdene N, Orgilbayar B, Sukhbat S, Soyolmaa Ts, Unursaikhan B, Jargalsaikhan L, and Otgonjargal E. "Technological study on the Gravity Processing of Manganese Ore." Bulletin of the Institute of Chemistry and Chemical Technology, Mongolian Academy of Sciences, no. 7 (December 25, 2019): 18–22. http://dx.doi.org/10.5564/bicct.v0i7.1268.

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This study investigated the effectiveness of the gravity beneficiation method based on gravitation and centrifugal forces for manganese ore. Manganese ores from Unagad deposit, samples powders were analyzed for their element and mineralogical composition using inductively coupled plasma mass spectrometry (ICP-MS) and X-ray diffractometer (XRD). Mineralogy and petrographic analysis are presented the mineralogical compositions are hydro goethite, manganese minerals and magnetite, the gangue minerals are quartz, albite, orthoclase, microcline in manganese ore. Manganese mineral occurs white, improper shape particles, weak grained-aggregates associated in gangue minerals. The most important minerals consist of manganese minerals are hausmannite, pyrolusite, rhodochrosite, and manganosite. The composite of feed containing 17.31 % Mn and 36.3 % SiO2 was produced by a centrifugal concentrator in combination with the shaking table. In the experiment, a concentrate assaying 41.37% Mn was obtained from this composite with 11.9 % yields. In the next experiment, f80=0.074mm particle size feed ore was used in the MGS concentration test. A concentrate containing 38.33 % Mn with 26.57 % yields was produced in this experiment. The results showed that it is possible to obtain concentrate on the gravity processing of manganese ore that economically significant and meet standard requirements. Манганы хүдрийг гравитацийн аргаар баяжуулах технологийн судалгаа Хураангуй: Энэхүү судалгааны ажлаар манганы хүдрийг хүндийн хүч болон төвөөс зугтах хүчний үйлчлэл дээр үндэслэн гравитацийн аргаар баяжуулах туршилт явуулав. Унагад ордын манганы хүдрийн дээжийн элементийн найрлагыг индукцийн холбоост плазмын масс спектрометр (ICP-MS), эрдсийн найрлагыг рентген дифрактометрийн аргаар тодорхойлсон. Минералоги, петрографийн шинжилгээгээр чулуулагт гидрогётит, манганы эрдсүүд, магнетит гэсэн хүдрийн эрдсүүд, кварц, альбит, ортоклаз, микроклин зэрэг хүдрийн бус эрдсүүд тодорхойлогдлоо. Хүдрийн бус эрдэс дотор манганы эрдэс нь цагаан өнгөтэй, зөв бус хэлбэртэй мөхлөгүүд мөн сул шигтгээлэг байдлаар тааралдаж байна. Манганы эрдсүүд нь гаусманит, пиролюзит, родохрозит, манганизит хэлбэрээр агуулагдсан байна. Манганы 17.31%, цахиурын ислийн 36.3% агуулгатай анхдагч хүдрийг төвөөс зугтах хүчний сепаратор болон ширээний хосолсон аргаар баяжуулахад баяжмалын агуулга Mn-41.37%, гарц 11.9% байв. Харин -0.074 мм фракцийн агуулга 80%-тай анхдагч хүдрийг хүндийн хүчний сепаратор (MGS)–аар баяжуулж, 38.33% -ийн манган агуулсан, 26.57% -ийн гарцтай баяжмал гарган авсан. Иймд манганы хүдрийг гравитацийн аргаар баяжуулахад стандартын шаардлага хангасан эдийн засгийн ач холбогдолтой бүтээгдэхүүн гарган авах боломжтойг тогтоов. Түлхүүр үг: Манганы хүдэр, хүндийн хүчний сепаратор, төвөөс зугтах хүчний сепаратор, рентген - дифрактометр.

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Rashad, M. M. "Synthesis and magnetic properties of manganese ferrite from low grade manganese ore." Materials Science and Engineering: B 127, no. 2-3 (February 2006): 123–29. http://dx.doi.org/10.1016/j.mseb.2005.10.004.

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Shen, Ruihua, Guangqing Zhang, Mark Dell'Amico, Peter Brown, and Oleg Ostrovski. "Sintering Pot Test of Manganese Ore with Addition of Manganese Furnace Dust." ISIJ International 47, no. 2 (2007): 234–39. http://dx.doi.org/10.2355/isijinternational.47.234.

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Faria, Geraldo Lúcio, Nelson Jannotti, and Fernando Gabriel da Silva Araújo. "Particle disintegration of an important Brazilian manganese lump ore." Rem: Revista Escola de Minas 67, no. 1 (March 2014): 55–60. http://dx.doi.org/10.1590/s0370-44672014000100008.

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The manganese lump ore from Morro da Mina mine is typically silicate carbonated and presents a great economic potential for the ferroalloy companies installed in Minas Gerais. However, its low manganese content, associated with the lack of knowledge about its metallurgical properties makes it difficult for large scale application. This pioneering study aimed to amply investigate this lump ore's particle disintegration. One ton of ore from the mine was homogenized and quartered. Representative samples were characterized by different techniques, such as ICP-AES, XRD, SEM, BET and OM. Aiming to characterize particle disintegration, three parameters were proposed: Cold Disintegration Index (CDI), Decrepitation Index (DI) and Heating Disintegration Index (HDI). By using these indexes, it was possible to conclude that this manganese lump ore did not present significant disintegration at room temperature. At medium temperature test, slight decrepitation occurred, and at high temperatures, intense disintegration was detected. The carbonate decomposition and porosity growth were the main responsible factors for the ore hot particle disintegration.

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