GENERAL CHARACTERISTICS OF BAUXITES

2018-1-18  • Bauxite is the primary aluminium ore for most of the world’s production of aluminium • Most bauxite is via silica rocks to form lateritic bauxite where long term leaching of silica and other soluble materials due to a wet tropical or subtropical climate results in

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What are the chief characteristics of bauxite?

2021-8-13  (i) Though several ores contain aluminium, it is from bauxite, that a clay like substance alumina and later aluminium are obtained. (ii) Bauxite deposits are formed by the decomposition of a wide variety of rocks rich in aluminium silicates.

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CHEMICAL-MINERАLOGICAL CHARACTERIZATION OF

2014-9-2  Bauxite is a multi-component ore with over 100 different mineral forms identified. Aluminium is mainly present in bauxite in the form of hydrated oxides: hydragilite(gibbsite), boehmite and diaspore. Hydrargilite (gibbsite) Al2O33H2O is crysta-lized in a monoclinic system with a limited hex-agonal dislocation of ions. The elementary cell con-sists of 8 aluminium (III) ions and 24 hydroxyl ions, which

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Bauxite - an overview ScienceDirect Topics

Bauxite is the most common aluminum ore. Approximately 98% of primary aluminum production is based on bauxite. In the former Soviet Union, aluinite and kaolinite are also used in small proportions for aluminum production.

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Geologic characteristics and potential of bauxite in China ...

2020-5-1  The main bauxite deposit types in China are the paleo-weathering crust and the karst accumulation type (Sun et al., 2018) with the former commonly rich in metals such as Ga, V and Sc. Late Paleozoic (especially Carboniferous) is the main ore-forming epoch for paleo-weathering crust-type bauxite deposits.

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Bauxite Reserve in Orissa and its Utilisation

2008-3-12  The bauxite ore is very hard and massivein the top and moderately hard and spongy below.The pale buff to creamy white coloured bauxiteis mostly of high grade and is recorded mostly onsurface. Bauxite, pale pink in colour and with aclayey appearance, has been found to occurtowards the lower part of the bauxite zone.Crystalline, cryptocrystalline and dense gibbsiteoccur in varying

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Mineralogical characteristics of the superlarge Quaternary ...

Request PDF Mineralogical characteristics of the superlarge Quaternary bauxite deposits in Jingxi and Debao counties, western Guangxi, China In recent decades, more than 0.5 billion tons of ...

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Beneficiation of bauxite

2011-8-11  Bauxite deposits often contain a high percentage of clay and siliceous materials and it is sometimes nece-ssary to reduce the silica content in the ore by bene-ficiation. The paper describes the studies carried out for the beneficiation of bauxite at the Indian Alutnini-um Company Ltd's mines at Bagru Hill (Lohardaga).

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Bauxite Facts - Softschools

Bauxite is a mineral with a dull, earthy luster which is usually white or gray, though sometimes can be found stained by yellow, orange, red, pink, or brown by iron or included iron minerals. It has no cleavage, a low specific gravity, and the Mohs Hardness Scale score is between 1 and 3. Its streak is usually white, but its iron stain can discolor.

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Analysis on Characteristics of Provenance of bauxite in ...

Analysis on Characteristics of Provenance of bauxite in Guizhou, China . Tao Cui . College of Resources and Environmental Engineering, Guizhou Institute of Technology, Guiyang, ... parent rocks can provide ore-forming materials for bauxite formation in different stages, the same

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PAPER OPEN ACCESS Regional tectonic and geochemical ...

bauxite characteristics in Pahang, Malaysia and West Kalimantan, Indonesia ... Bauxite ore is defined as an economically mineable bauxites that contain ≥ 40 – 50% Al 2O 3, ≤ 20% Fe 2O 3 and 3-5% TSiO 2 [1]. The neighboring country of Indonesia and Malaysia was also known as one of bauxite

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Mineralogical characteristics of the bauxite deposits in ...

【Abstract】 Bauxite is the primary source of aluminum metal,this ore is usually reddish to brown in color in nature.It is formed through a process of weathering,leaching,and deposition.Deposits of bauxite are often found near the surface of the Earth.The orebodies of bauxite deposits in Yunnan area with respect to specific tectonic units,especially for the mineralization point of ...

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Bauxite Reserve in Orissa and its Utilisation

2008-3-12  Ore Characteristics : The bauxite ore is very hard and massive in the top and moderately hard and spongy below. The pale buff to creamy white coloured bauxite is mostly of high grade and is recorded mostly on surface. Bauxite, pale pink in colour and with a clayey appearance, has been found to occur towards the lower part of the bauxite zone.

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Mineralogical and Physical Chemical Characterization of

The bauxite composition in natural state will determine the ore characteristics. These characteristics will define in which of the mentioned groups the material will be used.

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Ore-forming geological characteristics and prospecting ...

Download Citation Ore-forming geological characteristics and prospecting potential of bauxite deposit in Wushi, Xinjiang Several bauxite deposits have been discovered in north area of Wushi ...

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Mineralogical and crystallographic characteristics of ...

2019-7-11  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,

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曹窑煤矿区深部铝土矿特征及勘查启示-The characteristics ...

The characteristics and the prospecting enlightenment of the deep bauxite in the Caoyao coal mine area 投稿时间:2010-05-31 DOI: 中文关键词: 曹窑煤矿区 深部铝土矿 矿床地质特征 勘查启示 英文关键词: Caoyao coal mine areal deep bauxite ore

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LIST OF ORES AND THEIR NAMES SULPHIDE ORE

2021-5-27  water while heavier ore particles settle down. Ex. Oxygenated Ores. (b) Froth Floatation method This method is mainly employed for the concentration of sulphide ores. The method is based on the different wetting characteristics of the gangue and the sulphide ore with water and oil. The gangue preferrentially wetted by water and the ore by oil.

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Mineralogical characteristics of the bauxite deposits in ...

【Abstract】 Bauxite is the primary source of aluminum metal,this ore is usually reddish to brown in color in nature.It is formed through a process of weathering,leaching,and deposition.Deposits of bauxite are often found near the surface of the Earth.The orebodies of bauxite deposits in Yunnan area with respect to specific tectonic units,especially for the mineralization point of ...

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Ore-forming geological characteristics and prospecting ...

Download Citation Ore-forming geological characteristics and prospecting potential of bauxite deposit in Wushi, Xinjiang Several bauxite deposits have been discovered in north area of Wushi ...

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Mineralogical and crystallographic characteristics of ...

2019-7-11  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,

Get Price

LIST OF ORES AND THEIR NAMES SULPHIDE ORE

2021-5-27  water while heavier ore particles settle down. Ex. Oxygenated Ores. (b) Froth Floatation method This method is mainly employed for the concentration of sulphide ores. The method is based on the different wetting characteristics of the gangue and the sulphide ore with water and oil. The gangue preferrentially wetted by water and the ore by oil.

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Bauxites - definition of Bauxites by The Free Dictionary

bauxite. ( ˈbɔːksaɪt) n. (Minerals) a white, red, yellow, or brown amorphous claylike substance comprising aluminium oxides and hydroxides, often with such impurities as iron oxides. It is the chief ore of aluminium. General formula: Al2O3.nH2O. [C19: from French, from ( Les) Baux in southern France, where it was originally found] Collins ...

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Characteristics of Mineral Deposits - EOLSS

2020-8-18  interest in an ore is referred to as the grade of a deposit. To be graded, however, a mineral deposit must attain a minimum size, because no matter how high its grade, a deposit must contain enough ore to pay for the equipment, labor, and cost of extraction. The minimum concentration needed to extract the ore at a profit is known as the cut-off ...

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Bauxite Reserve in Orissa and its Utilisation

2008-3-12  Ore Characteristics : The bauxite ore is very hard and massive in the top and moderately hard and spongy below. The pale buff to creamy white coloured bauxite is mostly of high grade and is recorded mostly on surface. Bauxite, pale pink in colour and with a clayey appearance, has been found to occur towards the lower part of the bauxite zone.

Get Price

Mineralogical and Physical Chemical Characterization of

The bauxite composition in natural state will determine the ore characteristics. These characteristics will define in which of the mentioned groups the material will be used.

Get Price

Beneficiation of bauxite

2011-8-11  Bauxite deposits often contain a high percentage of clay and siliceous materials and it is sometimes nece-ssary to reduce the silica content in the ore by bene-ficiation. The paper describes the studies carried out for the beneficiation of bauxite at the Indian Alutnini-um Company Ltd's mines at Bagru Hill (Lohardaga).

Get Price

Bauxite The Aluminum Association

2021-9-6  Bauxite ore, refined through two processes, is the primary source of aluminum. Land conservation is a key industry focus An average of 80 percent of the land mined for bauxite is returned to its native ecosystem. Topsoil from the mining site is stored

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