use of leaching during the concentration of ore
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Leaching is used when the ore is soluble in a solvent. The powdered ore is dissolved in a chemical, usually a strong solution of NaOH.Extraction of the Aluminium metal from Bauxite ore is done using this process.
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The separation of impurities (silica (SiO2), ferric oxide (Fe2O3) and titanium oxide (TiO2)) in bauxite ore is done by leaching process using either Bayer's method of Hall's method.
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