Indian bauxite mining plant crusher machine beneficiation ...
The term bauxite ore is applicable to bauxites, which are economically mineable containing not less than 45-50% Al2O3 and not more than 20% Fe2O3, and 3-5% combined silica. The term alumina refers to pure Al2O3 containing 52.9% Al and 47.1% O. Bauxite deposits originate from weathering or soil formation with enrichment of aluminum.