Which process is used to concentrate the bauxite ore for the extraction of aluminium?Option: 1 Magnetic separationOption: 2 SmeltingOption: 3 Froth flotationOption: 4 Bayer's process
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By reverse flotation of the ore, a highgrade bauxite concentrate with A/S ratio was obtained, however the Al 2 O 3 recovery remained low at %. Although the A/S rate achieved by the flotation was adequate for the Bayer process, Al 2 O 3 recovery was considered to be low for flotation process. It was deduced that the separation of ...
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In the Bayer process, bauxite ore is heated in a pressure vessel along with a sodium hydroxide solution (caustic soda) at a temperature of 150 to 200 °C. The other components of Bauxite, however, do not dissolve. Which method is used to concentrate bauxite?
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Find an answer to your question Question 3(a) Baeyer's process is used to concentrate bauxite ore to balanced chemical equations for the reaction t. usmanshaik338 usmanshaik338
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The Bayer process is the main method of alumina production worldwide. The use of lowquality bauxites for alumina production results in the formation of a significant amount of technogenic waste—bauxite residue (BR). The Bayer reductive method is one possible way to eliminate BR stockpiling, but it requires highpressure leaching at temperatures higher than 220 °C.
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technology is presented as a method to upgrade and preconcentrate bauxite deposits for use in alumina production. Dry processing with the ... mud are both related to the quality of bauxite used in the refining process. In general, the lower the Al2O3 content of bauxite, the larger the volume of red mud that will be generated, as the non
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Solution. Verified by Toppr. The correct option is A Froth flotation. Froth flotation method is used for the concentration of sulphide ores. The method is based on the preferential wetting properties with the frothing agent and water. In the given options, Galena (PbS) is the only sulphide ore. Hence, option A is correct.
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Contact Now +. Published time：29 December 2022. Bauxite is an aluminumcontaining mineral, and its main components include aluminum hydroxide, boehmite, diaspore, goethite, hematite, quartz, etc. Bauxite is formed from the parent rock in hot and humid climates. Its color is grayishwhite, brownred, and yellowishbrown.
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Aluminium is extracted from its chief ore, bauxite. The ore is first purified and then the metal is extracted from it by electrolytic reduction. (a) Write three balanced equations for the purification of bauxite by Hall's process. (b) Name a chemical used for dissolving aluminium oxide. In which state of subdivision is the chemical used?
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The Bayer process is used worldwide for the alumina production. This process involves the alkaline leaching of bauxite to extract Al, followed by the precipitation of Al(OH) 3 to recycle the solution [1,2,3].The leaching process results in the formation of a solid residue, commonly referred to as a bauxite residue, which consists of iron minerals, hydrous aluminosilicates, which are formed ...
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Which process is used for the concentration of bauxite? . ravigiri5305 ravigiri5305 Chemistry Secondary School answered Which process is used for the concentration of bauxite? ... Advertisement Advertisement KunalPhalaswal KunalPhalaswal Catination is the process Advertisement Advertisement New questions in Chemistry. What ...
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Bayer process The Bayer process is the principal industrial means of refining bauxite to produce alumina (aluminium oxide) and was developed by Carl Josef Bayer. Bauxite, the most important ore of aluminium, contains only 3060% aluminium oxide (Al 2 O 3 ), the rest being a mixture of silica, various iron oxides, and titanium dioxide. [1]
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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 aOH 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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Find detailed answer to Which process is used for the concentration of Bauxite (Al2O clicking on this link. Chapter Chosen. ... Which process is used for the concentration of Bauxite (Al 2 O 2 O)? Leaching. 254 Views. Switch; Flag; Bookmark; Advertisement . Advertisement . Flag it. Incomplete. Incorrect. Repetitive. Suggest Edit. Submit ...
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Baeyer's process is used to concentrate bauxite ore to alumina. Give balanced chemical equations for the reaction taking place for it's conversion from bauxite to alumina.
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The bauxite ore, Bayer process materials before precipitation, mud residue, and sand residue are therefore of radiological interest, whereas the alumina product is not. 8 Positional and personal monitoring data from bauxite mines and alumina refineries in Western Australia have been used to assess the abovebackground annual doses for the ...
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The HallHeroult process is widely used in the extraction of aluminium. In HallHeroults process, pure Al 2 O 3 is mixed with CaF 2 or Na 3 AlF 6. This results in lowering the melting point of the mixture and increases its ability to conduct electricity. A steel vessel with a lining of carbon and graphite rods is used.
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The Bayer process is the principal method for the production of alumina from bauxite worldwide. The modern version of the process (developed in the 1880's) still maintains the key steps of dissolution of aluminarich minerals into hot caustic solution, separation of the insoluble phases, followed by gibbsite precipitation and calcination of the gibbsite to alumina (Al 2 O 3).
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Bayer's process is used for the concentration of aluminium ore, bauxite. In this process, the impurities like iron oxide and silica are removed. ... Similar Questions. Q1 ___ _____ is a process used to purify or concentrate liquids. View Solution. Q2. A high concentration of synthetic auxins is used for . View Solution. Q3. A method used to ...
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Name the process used for the enrichment of sulphide ore. ... Name the solution used to react with Bauxite as a first step in obtaining pure aluminium oxide, in the Baeyer's process. ... Baeyer's process is used to concentrate bauxite ore to alumina. Give balanced chemical equations for the reaction taking place for it's conversion from bauxite ...
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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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Solution. In Bayer's process, the bauxite ore is first crushed and then it is leached by heating with hot concentrated caustic soda (NaOH) solution under high pressure for 2 to 8 hrs at 140 to 150 °C in a tank called a digester. Aluminium oxide, being amphoteric in nature, dissolves in an aqueous NaOH solution, forming watersoluble sodium ...
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Solution. The correct option is A. Bayer's process. Bayer's process is used for concentration of bauxite ore. The end product is concentrated alumina Al2O3. HallHeroult's process is used for reduction of alumina to aluminium. Hoopes process is used for refining aluminium. Suggest Corrections.
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Solution. (1) The chief ore of aluminium is Bauxite Al 2 O 3 · 2 H 2 O from which aluminium is extracted. (2) The process of concentration of bauxite is done by Bayer's process. (3) In the electrolytic reduction of aluminium, alumina is added to cryolite because it lowers the fusion temperature of the electrolytic bath in the extraction of ...
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