In the extraction of aluminium; Process X: applied for red bauxite to remove iron oxide Process Y: ... Bauxite is purified by: This question has multiple correct options. Medium. View solution > Correct the balanced chemical equation in the extraction of aluminium : Medium. View solution > Name the process used for the purification of bauxite ...
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This Guidance explores and explains the sustainable management of bauxite residue. Bauxite residue also known as 'red mud' is produced when extracting alumina from bauxite during the Bayer Process. Approximately tonnes of residue is generated per tonne of alumina produced. To manage this residue sustainably, the industry continues to strive for Bauxite
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Red mud, now more frequently termed bauxite residue, is an industrial waste generated during the processing of bauxite into alumina using the Bayer process. It is composed of various oxide compounds, including the iron oxides which give its red colour.
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It can be purified by either Hall's process or Baeyer's process or Serperck's process. Here, Mond's process is used for refining the nickel metal and Liquation process is used for refining Bi, Sn, Pb and Hg. B i, S n, P b a n d H g. Therefore, the Hall's process used to purify the bauxite ore. The answer is option B
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Hall's process for leaching of alumina from bauxite: (1) Bauxite ore and sodium carbonate are fused toghether to convert aluminium oxide into soluble sodium metaaluminate. The insoluble residue contains the impurities of silica and iron oxide. The fused mass is treated with water.
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Bauxite is purified by: This question has multiple correct options. Medium. View solution > In the extraction of aluminium Process X: applied for red bauxite to remove iron oxide {chief impurity} Process Y: (Serpeck's process) : applied for white bauxite to remove z {chief impurity} then process X and impurity Z are_____.
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Bauxite residues from alumina production. Aluminium production consists of two key stages: The first is alumina refining (Bayer process), which involves the generation of alumina from bauxite ore; the second stage is aluminium smelting (HallHéroult), the process of transforming alumina into Most of the world's alumina is produced using the Bayer process, although minor volumes ...
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Steps in Bayer process : (1) Ore Preparation : It is important to do ore preparation to reduce total precentage of silica in boxite. Using crushing and grinding, the silica content reduced from 10% to % as bauxite tends to get concentrated in the finer fractions (, 100 mesh). Another importance of using finer bauxite is to increase ...
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The Bayer Process, which is used by about 80 active plants worldwide, is the primary method of producing aluminum from bauxite. Bauxite ore is dissolved in sodium hydroxide, or lye, at a high temperature and pressure. Then, the alumina and bauxite ores are separated by washing out the waste (red muds or sands) from the alumina.
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The bauxite is purified to yield a white powder from which aluminium can be extractedaluminium oxide (also known as alumina). By the Bayer Process, the bauxite is purified. The ore is first combined with a hot, condensed sodium hydroxide solution.
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Use T if statement is true and F if it is false.(I) In Goldschmidt thermite process aluminium acts as a reducing agent.(II) Mg is extracted by electrolysis of aq. solution of MgCl2 .(III) Extraction of Pb is possible by carbon reduction method.(IV) Red Bauxite is purified by Serpect's Process.
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Bauxite is Al 2O 2O. Water molecules and other impurities are removed from it to make it pure Al 2O 3. By leaching in the Bayer's process, pure Al 2O 3 obtains. When a sulphide ore is roasted, it turns to oxide ore. Here the ore is oxidized and the ore acts as reducing agent. So sulphate part acts as reducing agent.
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Bauxite ore is soft and red clay, rich in alumina, and its name originates from Les Baux de Provence, It was French geologist Pierre Berthier who first discovered bauxite near a village in southern France in 1821. ... There are several processes like the Bayer Process and HallHeroult Process involved in the extraction of aluminium from bauxite ...
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The bauxite is extracted using machines such as bulldozers, loaders and scoops. It is then loaded into trucks, rail cars or conveyors and transported to the alumina refinery. Before bauxite is reacted with caustic soda in the Bayer process it must be crushed, washed and dried. The resulting 'red mud' waste is then stored in residue lakes.
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also called "red mud", and is a typical nonferrous metallurgical solid waste (Wang et al. 2018; Xue et al. 2022). The varieties of bauxite residue depend on the grade of the baux ite and alumina production process. It can be classied as Bayer method bauxite residue (red mud), sintering method
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referred to as "the Bayer process". This second misunderstanding is difcult to dispel and can be explained by the fact that both processes usually take place in one plant, namely in an aluminium oxide plant. Figure shows such a plant, which is located in Stade on the Elbe. In the photo, the storage area of the red bauxite is clearly ...
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The Bayer process is a chemical process for refining aluminium hydroxide, Al(OH) 3 from bauxite; this aluminium hydroxide is subsequently calcined to produce alumina, Al 2 O basis of the Bayer process is an understanding of the characteristics of the sodiumhydroxide—sodiumaluminate solution relationship, namely its ability to keep sodiumaluminate in a dissolved state over a wide ...
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As the minerals are weathered they gradually breakdown into various forms of hydrated aluminum oxide, Al 2 O 3 .xH 2 O, known as bauxite. The bauxite is purified by the Bayer Process. First the ore is mixed with a hot concentrated solution of sodium hydroxide. The NaOH will dissolve the oxides of aluminum and silicon but not other impurities ...
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How is bauxite ore purified by baeyer's process or Serpek's process? Baeyer's method is suitable for the purification of bauxite if it contains excess of iron oxide Fe2O3. When finely divided bauxite is treated with strong caustic soda, then bauxite is converted into sodium aluminate. The solution is filtered to remove Fe2O3.
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The bauxite is purified by the Bayer Process. First the ore is mixed with a hot concentrated solution of sodium hydroxide. The N a O H will dissolve the oxides of aluminum and silicon but not other impurities such as iron oxides, which remains insoluble. The insoluble materials are removed by method is called the chemical method.
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Other articles where Bayer process is discussed: alumina: .extracted from bauxite through the Bayer process, which was developed for the aluminum industry in 1888. In the Bayer process bauxite is crushed, mixed in a solution of sodium hydroxide, and seeded with crystals to precipitate aluminum hydroxide. The hydroxide is heated in a kiln in order to drive off.
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Serpeck's process Bayer's method and Hall's method is used for the red bauxite which contains F e 2 O 3 and silicates as impurities. Serpeck's method is used for the white bauxite which containes silica as impurities.
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Solution Bayer's process is used for the purification of bauxite Al 2 O 3 · 2 H 2 O. Aluminium is extracted by Bayer's process. The bauxite is powdered and mixed with a concentrated solution of caustic soda NaOH to give sodium meta aluminate and impurities are removed by filtration.
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Chemistry Reaction with Metals Bauxite is pu... Question Bauxite is purified by A Hall's process B Bayer's process C Serpeck's process D all of these Solution The correct option is D all of these Red Bauxite is purified by Bayer's Hall's process where as white bauxite is purified by Serpeck's process Suggest Corrections 1 Similar questions Q.
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(I) In Goldschmidt thermite process aluminium acts as a reducing agent. (II) M g is extracted by electrolysis of aq. solution of M g C l 2. (III) Extraction of P b is possible by carbon reduction method. (IV) Red Bauxite is purified by Serpect's Process.
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The silica present as an impurity in bauxite is reduced to silicon which is volatile at high temperature. So, it is removed easily. SiO2 + 2C S i O 2 + 2 C → Si + 2CO S i + 2 C O. Note: Bauxite can also be purified by the Hall Heroult's process,which is the major industrial process for smelting aluminium (bauxite) and by Bayer process, which ...
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