Describe how aluminum metal is isolated from its natural ore, as well as the processes incolved...

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Chemistry

Describe how aluminum metal is isolated from its natural ore,as well as the processes incolved in its purification

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Aluminium is the most abundant metal in the earths crust Aluminium does not occur free in nature but its compounds are numerous and widely distributedThe chief and important ore from which aluminium is exclusivelyand profitably obtained is Bauxite AI2O32H2O The extraction ofthe metal from bauxite involves the three main stepsPurification of BauxiteElectrolytic reduction of Alumina AI2O3Purification of AIOres of AluminiumName of OreFormula of OreBauxiteAl2O32H2OCryoliteNa3AlF6FeldsparK2Oal2O36SiO2 or KalSi3O8MicaK2O3Al2O36SiO22H2OCorundumAl2O3Aluminium is mainly extracted from bauxite ore Extractionof Aluminium Purificationof BauxiteBy Bayers process comercially it is being carried out for redbauxite not for the white bauxiteFlow sheet of Bayers process for the preparation of pureAl2O3 HallsprocessCrude bauxite at 1100C reacts with Na2CO3 little CaCO3 whenCaSiO3 NaSiO2 NaFeO2 etc formAl2O3 Na2CO3 See Answer

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