Relevant bibliographies by topics / Bauxite ore

Academic literature on the topic 'Bauxite ore'

Author: Grafiati
Published: 10 December 2022
Last updated: 19 February 2023

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Journal articles on the topic "Bauxite ore"

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Daya, Audu M., Ahmad I. Haruna, Abubakar S. Maigari, and Isah Yahuza. "Resource Assessment and Possible Industrial Applications of Bauxite Occurrences in Parts of the Mambila Plateau, NE Nigeria." European Journal of Environment and Earth Sciences 3, no. 2 (March 10, 2022): 19–23. http://dx.doi.org/10.24018/ejgeo.2022.3.2.244.

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Bauxites are normally formed from underlying aluminosilicate rocks as a result of tropical weathering. In our previous 2 papers, we presented the Geology, possible host, mineralogy, and geochemistry of the bauxites of Mambila Plateau, NE Nigeria. The bauxite was formed from residual chemical weathering of trachyte and occurs as a blanket cover over saprolite. XRD results showed gibbsite as the major mineral with small amounts of hematite, kaolinite, and quartz. Geochemistry of the bauxite ore is characterized by enriched Al2O3 (39.50-78.20.0%), erratic amounts of SiO2 (2.89-5.13%) and Fe2O3 (5.98-21.96%). In this study, the resources of Mambilla Bauxite Deposits (Block I and Block II) have been estimated to be 7,529,312.5 metric tons using block method of vertical geological cross-section bearing in mind that the Mambilla Bauxite Deposits have been explored by pitting on a regular grid pattern of 100 m×100 m. The bauxite deposit in Block II has met the requirement for metallurgical grade bauxite as standard specification (IS: 5953-1985, Reaffirmed [1]). While, Block I deposit has not met such specifications. Sustained investment in bauxite exploration is required to upgrade the ore reserves for sustainable development of a mining enterprise.
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Cvetkovic, Zeljko, and Pavle Tancic. "Mineralogical and crystallographic characteristics of bauxites from some Grebnik’s (Metohija, Serbia) ore deposits." Annales g?ologiques de la Peninsule balkanique 80, no. 1 (2019): 45–61. http://dx.doi.org/10.2298/gabp19010045c.

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Five typical bauxite samples from three ore deposits from the wider area of Grebnik Mt. (Metohija, Serbia) were examined with the optical microscopic, X-ray powder diffraction (XRPD) and chemical methods. The occurrences in bauxites were studied and described and the presence of major minerals was determined: diaspore, boehmite and hematite; minor minerals: quartz, goethite, rutile, kaolinite and hydro-hematite; as well as anatase, brookite, magnetite and chromite, which occur only sporadically. According to the quantity of main Al-bearers, three types of bauxite ore were recognized: diaspore, boehmite and boehmite-diaspore. Unit cell dimensions of major minerals were determined, mostly with values within reference data. However, all of the studied hematites have smaller a0 and V0 values, most probably due to the substitution of Fe3+ by Al3+. All samples are further classified as iron-rich and ferritic bauxites. It was found that there were changes in origin conditions between major Al-hydroxides minerals and hematite, as well as between the diaspore and boehmite. Determined chemical compositions put this raw material into high-quality raw materials for obtaining the electro corundum and alumina. The synthesis of the obtained data indicate that Grebnik?s bauxites have some unique characteristics, more or less different from most of the World?s known bauxite ore deposits.
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Radusinović, Slobodan, and Argyrios Papadopoulos. "The Potential for REE and Associated Critical Metals in Karstic Bauxites and Bauxite Residue of Montenegro." Minerals 11, no. 9 (September 7, 2021): 975. http://dx.doi.org/10.3390/min11090975.

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Research for critical raw materials is of special interest, due to their increasing demand, opulence of applications and shortage of supply. Bauxites, or bauxite residue after alumina extraction can be sources of critical raw materials (CRMs) due to their content of rare earth elements and other critical elements. Montenegrin bauxites and bauxite residue (red mud) are investigated for their mineralogy and geochemistry. The study of the CRM’s potential of the Montenegrin bauxite residue after the application of Bayer process, is performed for the first time. Montenegrin bauxites, (Jurassic bauxites from the Vojnik-Maganik and Prekornica ore regions from the Early Jurassic, Middle Jurassic-Oxfordian and Late Triassic paleorelief) are promising for their REE’s content (around 1000 ppm of ΣREE’s). More specifically, they are especially enriched in LREEs compared to HREEs. Regarding other CRMs and other elements, Ti, V, Zr, Nb, Sr and Ga could also be promising. In bauxite residue, the contents of Zr, Sr, V, Sc, La, Ce, Y, Ti and Nb are higher than those in bauxites. However, raw bauxites and bauxite residue as a secondary raw material can be considered as possible sources of CRMs.
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Nguyen, Minh Van, and Hau Van Nguyen. "Recovery of bauxite ore particles -1mm from tailings of the Tan Rai bauxite processing plant by mechianical classifiers." Journal of Mining and Earth Sciences 62, no. 3b (July 20, 2021): 51–57. http://dx.doi.org/10.46326/jmes.2021.62(3b).06.

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Tailings of the Tan Rai bauxite mineral processing plant contain a relatively high proportion of fine bauxite ore particles of less than 1mm. This amount of discarded fine bauxite particles necessarily leads to a high loss of valuable bauxite mineral and also require more tailings dam space. Recovery of such fine bauxite ore particles may produce certain economic and environmental effects to the current processing plant. The paper presents results of the study on recovery of fine bauxite ore particles -1 mm from tailings of the Tan Rai - Lam Dong bauxite mineral processing plant by the use of mechanical classifiers. The obtained +0.5 mm bauxite concentrate are suitable for blending with the +1 mm concentrate of the current plant. The study results showed that recovery of fine bauxite ore particles -1mm from the plant tailings may produce additional amount of valuable concentrate to ensure the supply requirements to the alumina plant and also add some values to the effective mineral resource utilization and bring some economic efficiency.
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Jalili, Zahra, Ataallah Bahrami, Masoud Ghadri, Behzad Nemati Akhgar, and Fatemeh Kazemi. "Leaching for iron removal from low-grade bauxite ore to access refractory instruction." Rudarsko-geološko-naftni zbornik 37, no. 1 (2022): 55–64. http://dx.doi.org/10.17794/rgn.2022.1.6.

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Iron-bearing minerals are the most important interfering compounds that are found with bauxite reserves. The element iron has adverse effects on bauxite applications, including the use of bauxite in refractory soils. The purpose of this research is to investigate the possibility of iron removal from low-grade bauxite ores to utilize them in refractory industries. For achieving this purpose, iron removal tests were performed on bauxite samples with an alumina to silica modulus of 0.73. After determining the appropriate iron removal method among the magnetic separation, calcination, and leaching (with H2SO4 and HCl) processes, optimal separation conditions were determined by tests that were designed using the Taguchi method. According to leaching results, using HCl for raw feed (un-calcined) provided the best result for iron removal. During this test, Fe2O3 grade decreased from 5.14% to 0.08%, and the alumina to silica modulus increased to 0.75. Calcination of the concentrate obtained from this test has led to favorable results in reducing the Fe2O3 grade (0.04%) and increasing the Al2O3 grade. Afterwards, in tests designed by the Taguchi method, the effect of parameters such as time, process temperature, HCl concentration, and feed grain size on iron removal from bauxite by HCl leaching processes are discussed. According to the results, the best efficiency of iron removal for a feed grain size of 250 µm is achieved in the following conditions: 30% HCl, process temperature of 25°C, and process time of 120 minutes. In this case, iron removal efficiency and Fe2O3 grade in process concentrate are 92.78% and 0.56%, respectively.
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Melo, Caio C. A., Rômulo S. Angélica, and Simone P. A. Paz. "A Method for Quality Control of Bauxites: Case Study of Brazilian Bauxites Using PLSR on Transmission XRD Data." Minerals 11, no. 10 (September 28, 2021): 1054. http://dx.doi.org/10.3390/min11101054.

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Available Alumina (AvAl2O3) and Reactive Silica (RxSiO2), the main parameters of bauxite controlled in the beneficiation process are traditionally measured by laborious, expensive, and time-consuming wet chemistry methods. Alternative methods based on XRD analysis, capable to provide a reliable estimation of these parameters and valuable mineralogical information of the ore, are being studied. In this work, X-ray diffraction data in transmission mode was used to estimate AvAl2O3 and RxSiO2 from Brazilian bauxites using the Partial Least Square Regression (PLSR) statistical tool. The proposed method comprises a routine of sample classification according to their similarities by Principal Component Analysis (PCA) and K-means, calibration of the PLSR model for each group of samples, grouping new bauxite samples according to the generated clustering model, and subsequent estimation of the parameters AvAl2O3 and RxSiO2 using the PLSR models for these samples. The results showed good accuracy and precision of the models generated for samples of the main ore lithology. The quality and pre-processing of the XRD data required for this method are discussed. The results demonstrated that this method has the potential to be industrially applied to quality control of bauxites as a rapid and automated procedure.
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Atakoglu, Ozge Ozer, and Mustafa Gurhan Yalcin. "Geochemical characterization of the Sutlegen bauxite deposit, SW Antalya." Mining of Mineral Deposits 15, no. 3 (September 2021): 108–21. http://dx.doi.org/10.33271/mining15.03.108.

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Purpose.The purpose is to determine geological and geochemical characteristics of the Sutlegen (Antalya, Turkey) bauxites, to identify the elements that played a major role in their formation. Methods. X-ray diffraction (XRD) mineral phase analysis, X-ray fluorescence (XRF) elemental analysis, plasma-mass spectrometry (ICP-MS), the petrographic and mineralogical analyses, and multivariate statistical methods were used. Findings. The major element content of the ore was determined as Al2O3 (60-35.2 wt%), SiO2 (39.5-0.2 wt%), Fe2O3 (48.4-19.5 wt%), TiO2 (36.9-16 wt%), and P2O5 (0.5-0.1 wt%). The Sutlegen region, which shows epirogenetic action with the uplift of the earth's crust, is generally rich in neritic carbonates. It was revealed that the bauxite ores have undergone moderate and strong laterization as a result of the deferruginization in the environment, and they were classified into four groups as lateritic, ferritic, kaolinitic, and bauxite. The increase in the aluminosilicate minerals, which were formed during the formation of bauxite in the environment was found to be directly proportional to the laterization processes. In this context, it was considered that the lateritic material that was firstly formed in the environment filled the cavities and pores of the karst-type limestones and sedimentary units in the region by superficial transfer phenomena. The bivariate diagrams of Log Cr vs. Log Ni revealed that the bauxite that formed in the region had an ultrabasic source. Originality. In literature, no scientific studies have been found on bauxite mineralization in the Sutlegen deposits that have been operated for a long period. Practical implications. In this context, the geochemical characteristics of bauxites revealed that the source of the laterization process in the region was the ultrabasic igneous rocks. The lateritic material moved by superficial transfer was accumulated on sandstone, claystone, siltstone, and limestone and in karstic cavities; then, it formed karstic bauxite (kaolinitic and bauxite) of different classifications due to the effect of metamorphism.
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Aziz, Israa A., Moayyed G. Jalhoom, and Muhanad A. Kheriallah. "Extraction of Zirconium From Iraqi Bauxite Ore." Engineering and Technology Journal 38, no. 10A (October 25, 2020): 1421–29. http://dx.doi.org/10.30684/etj.v38i10a.523.

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This research is devoted to the study of the extraction of zirconium from Iraqi Bauxite Ore by using hydrometallurgical method. The chemical analysis was done to the bauxite ore by using X-ray florescence, X-ray diffraction and atomic absorption spectroscopy. Zirconium Extraction was performed via three stages; the first stage is leaching of bauxite with sodium hydroxide for alumina leaching. The second stage is leaching of zirconium species from the remained powder produced from stage one after washing with deionized water and, nitric acid (HNO3 solutions). The results of the first stage has reflected the recovery of 42.27 % of Al2O3 which has been leached 100°C temperature, 7.5 molar of NaOH, liquid to solid ratio of 20/1, and stirring rate 450 rpm. The highest leaching percent of zirconium (Zr%) from the red mud approached 98.48 % at 100°C temperature, 7 molar acid concentration, 120 min. contact time, solid to liquid ratio (S/L) of 16/1, and stirring rate of 450 rpm. 99.47% recovery of zirconium was accomplished from nitric acid solutions by use of 3molar tri-n-butylephosphate (TBP)in kerosene at ,contact time for 6 min, and organic to aqueous phase (O/A) of 4/1.
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Khan, Z. S., S. M. Shaikh, and A. B. Ade. "Effect of pH on Metal Extraction From Bauxite Ore by Thiobacillus Ferrooxidans." Journal of Scientific Research 2, no. 2 (April 27, 2010): 403–6. http://dx.doi.org/10.3329/jsr.v2i2.4020.

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The extremophile, Thiobacillus ferrooxidans was selected to study the effect of pH on metal extraction from bauxite ore. This bacterium was inoculated in 9K medium having different pH, along with the bauxite ore, as metal source. After one month of incubation the extraction of metals aluminum and iron was measured by spectrophotometric methods. It was found that the extraction of aluminum was found better as compare to iron from bauxite at pH 2. Keywords: Aluminum; iron; metal extraction; pH; Thiobacillus ferrooxidans. © 2010 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved. DOI: 10.3329/jsr.v2i2.4020 J. Sci. Res. 2 (2), 403-406 (2010)
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van Chanh, Nguyen, Mitsuhiro Shigeishi, and Tran Quoc Tho. "Inorganic Composite Material Based on Fly Ash, Red Residue from Bauxite Ore for Road Building Projects in Vietnam." Advanced Materials Research 383-390 (November 2011): 2774–81. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.2774.

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The paper present solidifying technology based on geopolymer theory of inorganic composite materials from bauxite, red residue from bauxite ore, fly ash and activators for road building projects in Vietnam. This study describes physical properties and chemical compositions of bauxite, red residue, fly ash and the effects of bauxite-red residue-fly ash-activator mixes on the geotechnical properties of inorganic composite materials. Mixture design and testing procedures for inorganic composite materials. New inorganic composite materials have high durability and ability to water resistance. The presentation also show microstructure analysis of inorganic composite materials based on bauxite residue, fly ash and activators by X-ray diffraction, Infrared spectroscopy (IR), transmission electron microscopy (TEM) display high density, and modified microstructure of inorganic composite materials. Construction method of road using inorganic composite materials is also presented.
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Dissertations / Theses on the topic "Bauxite ore"

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Williams, Richard James. "Karst-associated bauxite deposits of Parnassos-Ghiona, Central Greece : ore genesis and structural evolution." Thesis, University of Brighton, 2014. https://research.brighton.ac.uk/en/studentTheses/2b04d019-0696-4544-a13d-b2de8971a69b.

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The karst-associated bauxites of the Parnassos-Ghiona zone in Central Greece are part of the large Mesozoic age Mediterranean Karst Bauxite belt. Greece is responsible for around 50% of European bauxite production, and has an estimated 600 million tonnes of bauxite reserves. This investigation focuses on the bauxites of Mount Iti and Mount Ghiona, two mountains in the west of the Parnassos-Ghiona zone that are currently being explored and mined by Greek bauxite producer, Elmin S.A. The aim was to develop a better geological understanding of the ore genetic history and regional structural evolution to aid ore deposit science and bauxite exploration. Within the Parnassos-Ghiona zone the bauxites were deposited as three separate ore horizons intercalated with thick limestone layers during the early Jurassic, late Jurassic and late Cretaceous. Only the upper two bauxite horizons are economic and therefore formed the focus of this investigation.
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Dagasan, Yasin. "Development of a Grade Control Technique Optimizing Dilution and Ore Loss Trade-off in Lateritic Bauxite Deposits." Thesis, Curtin University, 2018. http://hdl.handle.net/20.500.11937/70490.

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This thesis focusses on the development of new techniques to improve the resource estimation of laterite-type bauxite deposits. Contributions of the thesis include (1) a methodology to variogram-free modelling of the ore boundaries using multiple-point statistics, (2) an approach to automate the parameter tuning process for multiple-point statistical algorithms and (3) a grade control technique to minimise the economic losses due to dilution and ore loss.
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Tost, Michael, Benjamin Bayer, Michael Hitch, Franz Stephan Lutter, Peter Moser, and Susanne Feiel. "Metal Mining's Environmental Pressures: A Review and Updated Estimates on CO2 Emissions, Water Use, and Land Requirements." MDPI AG, 2018. http://dx.doi.org/10.3390/su10082881.

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The significant increase in metal mining and the inevitability of the continuation of this trend suggests that environmental pressures, as well as related impacts, have become an issue of global relevance. Yet the scale of the impact remains, to a large extent, unknown. This paper examines the mining sector's demands on CO2 emissions, water use, as well as demands on land use focusing on four principal metals: iron, aluminium (i.e., bauxite ore), copper, and gold. These materials represent a large proportion of all metallic materials mined in terms of crude tonnage and economic value. This paper examines how the main providers of mining data, the United Nations, government sources of some main metal producing and consuming countries, the scientific literature, and company reports report environmental pressures in these three areas. The authors conclude that, in the global context, the pressure brought about by metal mining is relatively low. The data on this subject are still very limited and there are significant gaps in consistency on criteria such as boundary descriptions, input parameter definitions, and allocation method descriptions as well as a lack of commodity and/or site specific reporting of environmental data at a company level.
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Deursen, Caio Moreira Van. "Métodos de desaguamento e disposição de rejeito da bauxita: estudo de caso e avaliação econômica." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/3/3134/tde-23022017-103826/.

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Cerca de 230 milhões de toneladas de bauxita são produzidas por ano e, destas, 60 milhões são provenientes de operações que beneficiam esta bauxita usando água como meio para separar as frações mais finas. Como consequência do beneficiamento, estima-se que mais de 25 milhões de toneladas de rejeito sejam dispostas todo ano. Estas frações têm grandes quantidades de caulinita, um argilomineral de difícil desaguamento. Estes sólidos estão tipicamente em uma suspensão com água a cerca de 15% de concentração em massa antes de operações de desaguamento. As formas de desaguamento variam, bem como as opções de disposição. Este texto discorre sobre opções de desaguamento como sedimentação natural, espessamento, filtragem e centrifugação. Também se discorre sobre alternativas de disposição. Estas são condicionadas pela concentração de sólidos do material a ser disposto e são a disposição hidráulica em diques ou reaterro na mina. Após a descrição de cada uma das alternativas, são feitas análises de combinações destas formas de desaguamento e disposição, além de uma avaliação do fluxo de caixa livre descontado acumulado para cada uma. Esta abordagem, feita para um caso específico, permite avaliar qual opção implica em menor despesa financeira para a operação. Foram feitas considerações para avaliar características não econômicas de cada uma das operações, como o consumo de água, área ocupada pelo depósito, perigos de cada opção e seus descomissionamentos. A opção que apontou menor desembolso no período da operação, bem como a minimização de perigos, é o desaguamento com centrífugas e disposição do material reaterrando áreas lavradas.
More than 230 million tonnes of bauxite are produced each year and, from these, nearly 60 million come from operations that use water to beneficiate the ore, separating the finer fractions. By reason of this mineral treatment, it is estimated that more than 25 million dry tonnes of reject are disposed each year. The finer fractions have high kaolinite concentrations, a challenging to dewater mineral. These solids are typically in a suspension with about 15% solids concentration in mass before any dewatering. Both the dewatering options and disposal possibilities may vary. This text discusses dewatering options such as natural settling, thickening, filtering and centrifugation. It also describes alternatives of disposing the material. These options depend on the water concentration and consist of hydraulic disposition or using the dewatered material as mine backfill. After describing each alternative, an analysis of possible combinations among those is made along with an accumulated discount free cash flow evaluation for each one. Considerations were made to evaluate non-economic characteristics of each operation including the water consumption, surface occupied, operational hazards, decommissioning and closure. The option that has shown the lowest cost during the life of the operation, simultaneously reducing operational hazards is dewatering with centrifuges and using the material as backfill in mined out areas.
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Ramasudha, T. "Biobeneficiation Of Bauxite Using Aspergillus Niger." Thesis, 1996. http://etd.iisc.ernet.in/handle/2005/1865.

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(13114245), Stuart Jonathan Nawrath. "Investigation into the relationship between scale growth rate and flow velocity for a supersaturated caustic - Aluminate solution." Thesis, 2004. https://figshare.com/articles/thesis/Investigation_into_the_relationship_between_scale_growth_rate_and_flow_velocity_for_a_supersaturated_caustic_-_Aluminate_solution/20334891.

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Scale formation in pipe work and process equipment is inherent to the operation of many chemical processing industries. It results in reduced equipment availability; lost

production and is costly to remove. In the Bayer process, where alumina is chemically extracted from bauxite ore, the specific process step used to recover the alumina from

supersaturated caustic-aluminate solution, referred to as Precipitation, results in significant scale formation on tank walls, process piping and process equipment in contact with the fluid. Operational experience has shown that the rate at which the scaling occurs is, in part, a function of the fluid velocity.

This thesis presents and discusses the experimental observations of an investigation into scale growth rate and fluid velocity not previously conducted at the Queensland Alumina Limited (QAL) process plant. The experimental results have identified that gibbsite scale growth is a non-linear function of the flow velocity and viscous sub -layer conditions, and that the rate of deposition, with time, is also exponential.

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Books on the topic "Bauxite ore"

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Ferenczi, Phil. Iron ore, manganese and bauxite deposits of the Northern Territory. Darwin: Government Printer of the Northern Territory, 2001.

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Sabirzi︠a︡nov, N. A. Gidrokhimicheskie sposoby kompleksnoĭ pererabotki boksita. Ekaterinburg: IKhTT UrO RAN, 2006.

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Aylmore, M. G. Mineralogy of Darling Range bauxites in relation to chemical reactivity, new ore types: Results of research carried out as MERIWA Project No. 90 in the Soil Science and Plant Nutrition Department of the School of Agriculture, the University of Western Australia. East Perth, WA: Minerals and Energy Research Institute of Western Australia, 1991.

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Gilkes, R. J. Mineralogy of Darling Range bauxites: Forms of Al in pisolitic ore : results of research carried out as part of MERIWA Project No. 90 in Soil Science and Plant Nutrition, the University of Western Australia. East Perth, WA: Minerals and Energy Research Institute of Western Australia, 1995.

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Sapozhnikov, Dmitriĭ Gavrilovich. Boksity i drugie rudy ali︠u︡minievoĭ promyshlennosti. Moskva: "Nauka", 1988.

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Mineworkers of Guyana: The making of a working class. London: Zed, 1987.

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Quamina, Odida T. Mineworkers of Guyana: The making of a working class. London: Zed Books, 1987.

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Aluminum Ore: The Political Economy of the Global Bauxite Industry. University of British Columbia Press, 2013.

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Gendron, Robin S., Mats Ingulstad, and Espen Storli. Aluminum Ore: The Political Economy of the Global Bauxite Industry. University of British Columbia Press, 2014.

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Tibbett, Mark, ed. Mining in Ecologically Sensitive Landscapes. CSIRO Publishing, 2015. http://dx.doi.org/10.1071/9780643106369.

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Mining in Ecologically Sensitive Landscapes explores the interface between geology and botany, and mining and conservation. Many areas of unusual geology that contain ore-bearing bodies also support unique ecological communities of plants and animals. Increasing demand to exploit rich mineral deposits can lead to a conflict between mining and conservation interests in such landscapes. This book brings together experts in the field of mining and conservation to grapple with this pressing issue and to work toward a positive outcome for all. Chapters are grouped into four themes: Introduction, Concepts and Challenges; Endemism in Ironstone Geosystems; Progress in Bauxite Mining; and Ways Forward. The book focuses on natural and semi-natural ecosystems, where landscape beauty, biodiversity and conservation value are at their highest measure and the mineral wealth they contain can bring affluence of regional or even national importance. Examples of conflicts ranging from threatened floristic endemics to human ecology are included, from Africa, the Americas and Australasia. Mining in Ecologically Sensitive Landscapes is an important reference for environmental managers, NGOs, restoration ecologists, academics, undergraduate and postgraduate students of ecology and environmental studies, conservation biologists, as well as mine managers, mining environmental specialists, consultants, regulators and relevant government departments.
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Book chapters on the topic "Bauxite ore"

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Ferreira, Karoline K., Bruna L. Novo, Danielle C. Castro, Daniel Barcellos, Luiz C. Bertolino, Antônio C. O. Guerra, Carla N. Barbato, et al. "Characterization and Ore Dressing of Bauxite from Brazil." In Light Metals 2017, 17–23. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-51541-0_3.

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Jiang, Tao, Zhuoxuan Li, Lin Yang, Guanghui Li, Yuanbo Zhang, and Jinghua Zeng. "Recovery of Iron from Hematite-Rich Diasporic-Type Bauxite Ore." In 6th International Symposium on High-Temperature Metallurgical Processing, 1–10. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781119093381.ch1.

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Jiang, Tao, Zhuoxuan Li, Lin Yang, Guanghui Li, Yuanbo Zhang, and Jinghua Zeng. "Recovery of Iron from Hematite-Rich Diasporic-Type Bauxite Ore." In 6th International Symposium on High-Temperature Metallurgical Processing, 3–10. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-48217-0_1.

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Mendes, Beatryz C., Leonardo G. Pedroti, Bianca R. Bonomo, Anna Carolina L. Lucas, Lívia S. Silva, Márcia M. S. Lopes, and Gustavo E. S. Lima. "Effect of the Incorporation of Bauxite and Iron Ore Tailings on the Properties of Clay Bricks." In Characterization of Minerals, Metals, and Materials 2021, 361–72. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-65493-1_35.

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Li, Guanghui, Foquan Gu, Jun Luo, Bona Deng, Zhiwei Peng, and Tao Jiang. "Recovery of Iron-, Titanium-Bearing Constituents from Bauxite Ore Residue via Magnetic Separation Followed by Sulfuric Acid Leaching." In Light Metals 2017, 75–81. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-51541-0_11.

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Deng, Bona, Tao Jiang, Guanghui Li, Qing Ye, Foquan Gu, Mingjun Rao, and Zhiwei Peng. "Effects of Reductive Roasting with Sodium Salts on Leaching Behavior of Non-ferrous Elements in Bauxite Ore Residue." In The Minerals, Metals & Materials Series, 157–64. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-72284-9_21.

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Wibowo, Gembong Suryo, and Endry Burhanuddin Nauval. "Analysis of Quarterly Production Scheduling Using Ore Blending Strategy Case Study Pit 7A and 15 Block a Tayan Bauxite Mine, PT ANTAM (Persero) Tbk." In Mine Planning and Equipment Selection, 1029–36. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-02678-7_99.

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Kumar, Dr Mukesh, Bimalananda Senapati, and C. Sateesh Kumar. "Beneficiation of High Silica Bauxite Ores of India an Innovative Approach." In Light Metals 2013, 187–90. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118663189.ch33.

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Safarian, Jafar. "Extraction of Iron and Ferrosilicon Alloys from Low-Grade Bauxite Ores." In The Minerals, Metals & Materials Series, 825–37. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-95022-8_66.

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Kumar, Mukesh, Bimalananda Senapati, and C. Sateesh Kumar. "Beneficiation of High Silica Bauxite Ores of India an Innovative Approach." In Light Metals 2013, 187–90. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-65136-1_33.

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Conference papers on the topic "Bauxite ore"

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Everett, Jim. "An Information System for a Bauxite Mine." In InSITE 2007: Informing Science + IT Education Conference. Informing Science Institute, 2007. http://dx.doi.org/10.28945/3062.

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Bauxite is mined and transported by conveyor to a processing plant, screened and washed, then placed into blended stockpiles to feed the alumina refinery. While being stacked to the stockpile, the ore is sampled. Completed stockpiles must be acceptably close to target grade (composition), not only in alumina, but also in residual silica, carbon and sodium carbonate. The mine is an open-cut pit. Each day the choice of ore to mine, from multiple locations in the pit, is based upon estimates of grade. Estimated grade, from exploration drilling of the area before mining, has both systematic and random error. This paper describes an information system to guide the daily choice of ore to mine. Continually updating the comparison between forecasts and sampled product, the system provides adjusted forecasts. Ore is selected to bring the exponentially smoothed grade to target, in each of the control minerals.
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ALmutairi, Y. A. "Mapping of the Bauxite Ore Surface Using 3D Ground Penetrating Radar Data." In 8th Congress of the Balkan Geophysical Society. Netherlands: EAGE Publications BV, 2015. http://dx.doi.org/10.3997/2214-4609.201414188.

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Palit, Christin, and Suliestyah. "Removal of silicates from gibbsite-bauxite ore by using cationic reverse flotation." In 3RD INTERNATIONAL CONFERENCE ON EARTH SCIENCE, MINERAL, AND ENERGY. AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0061567.

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Hussain, S., and M. Iqbal. "Extraction of alumina from low grade, highly siliceous bauxite ore from Khushab, Pakistan, using sulfuric acid process." In The 8th International Mineral Processing Symposium. Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742: CRC Press, 2017. http://dx.doi.org/10.4324/9780203747117-88.

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Wulandari, Winny, Mubiar Purwasasmita, Edy Sanwani, Adinda Asri Pixelina, and Agus Maulidan. "Implementation of reverse flotation method to reduce reactive and non-reactive silica in bauxite ore from West Kalimantan." In PROCEEDINGS OF THE 1ST INTERNATIONAL PROCESS METALLURGY CONFERENCE (IPMC 2016). Author(s), 2017. http://dx.doi.org/10.1063/1.4974435.

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Portella, Ricardo B., Luiza F. Andrade, Tomazo Garzia Neto, and Nelson Coelho. "Single-Pour/Single Pass Loading: An Innovative Concept for a New Generation of Ore Carriers." In ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2011. http://dx.doi.org/10.1115/omae2011-49589.

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Bulk Carriers have been developed since 1950 to carry large quantities of non-packed commodities such as grains, coal and iron ore. Nowadays, there are some 5,000 bulk carriers around the world and this number points to some concerns that affect owners of these types of ship and ports. One of these problems is the big waiting time at the ports that reaches 12% of the global fleet around the world at any given moment. At Brazilian iron ore ports the time waiting average was of 6–8 days during 2006–2008. A concrete example is the VALE operation that responds from mineral resources exploration to mineral resources delivery, passing through mines, railroads, seaport terminals and shipping business, forming a logistic chain that can not be interrupted by the expected growth in trade and consequent port congestion. In view of this, PROJEMAR and VALE faced the challenge of designing ore carriers in such a way that it would not interfere with the logistics chain by delaying other ships at the loading or discharge terminal. As the cargo operation is taken as the initial point of the design conception, the expected final product is a ship able to safely take loading rates as high as 16,000 tons of ore per hour, with each hold loaded in one pour and the ship fully loaded in one pass, resulting in fewer pours into the holds of the ore carrier, faster loading operations and, consequently, a significant economy for the ship owner and for the port. The amount of extra steel needed over conventional designs: less than one percent. The fundamental idea of this new concept, which PROJEMAR calls “single-pour, single-pass” design, is a method of ballast control that is synchronized with the cargo loading, scientifically deballasting the ship during loading in a way that balances the forces induced by the incoming cargo. Potential hull loading stress problems can occur due to the manner in which ore cargoes are loaded and due to the amount of cargo which is loaded in an individual hold. To avoid the creation of any unacceptable stresses in the ship’s structure, loading studies considering the planning of cargo loading and discharging operations, maximum allowable and minimum required mass of cargo for each hold and for adjacent holds as a function of the draught at mid-hold position in form of hold mass curves, calculations of still water shear forces and still water bending moments for each port loading condition and structural analysis are required to be developed on the early design stages. This ship loading concept is creating a new generation of ore carriers in such a way that the main class societies are nowadays developing new specific class notation dedicated to these ships. The purpose of this paper is to present the “single-pour, single pass” concept development and how it has been applied to the design of the new 400,000 DWT ore carriers that are being built for VALE in Chinese and Korean shipyards, and to the 80,100 DWT Bauxite Carrier that are being built for LOG-IN in Brazil. The “single-pour, single pass” concept was also partially considered on the design of 12 VLCCs that are being converted to VLOCs for VALE in China with PROJEMAR’s design.
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Hagni, Richard D., and Ann M. Hagni. "PHOSPHORUS MINERALOGY OF THE JAMAICA BAUXITE ORES." In 50th Annual GSA North-Central Section Meeting. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016nc-274964.

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Shkolnik, Emil L., Elena A. Zhegallo, Eric A. Eganov, B. A. Bogatyryov, Yu Y. Bugelskii, V. M. Novikov, and A. D. Slukin. "Microorganisms and exogenous ore genesis as shown by studies of phosphorite, bauxites and manganese ores." In Instruments, Methods, and Missions for Astrobiology V, edited by Richard B. Hoover, Alexei Y. Rozanov, and Jere H. Lipps. SPIE, 2003. http://dx.doi.org/10.1117/12.486693.

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Abdulvaliyev, R. A., and A. Akcil. "Change in the phase composition of low-quality bauxites as a result of chemical activation." In Challenges of Science. Institute of Metallurgy and Ore Beneficiation, Satbayev University, 2021. http://dx.doi.org/10.31643/2021.10.

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As a result of separation of a fine fraction of gibbsite-kaolinite low-quality bauxite from the Krasnogorsky deposit, it is possible to increase its silicon module. When bauxite is chemically activated in a solution of sodium bicarbonate, the fine fraction is effectively separated from the large one and the phase composition changes – the calcium silicate phase disappears and the calcite phase is formed. With an increase in the activation temperature, the content of kaolinite and siderite decreases, the content of quartz and hematite increases. Studies have shown that at chemical activation temperatures of 120 oC, lasting more than 120 minutes and 200 oC, lasting more than 40 minutes, a dawsonite phase is formed in bauxite, which compacts the mineral structure. When determining the mode of chemical activation, it is necessary to take into account the negative possibility of the formation of dawsonite.
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Hagni, Richard D., and Ann M. Hagni. "MINERALOGICAL CHARACTER OF HIGH-PHOSPHORUS JAMAICA BAUXITES ORES." In GSA Annual Meeting in Indianapolis, Indiana, USA - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018am-319067.

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