Write the balanced equations for the steps involved in the concentration of bauxite ore.
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(1) Bauxite ore and sodium carbonate are fused toghether to convert aluminium oxide into soluble sodium meta-aluminate. The insoluble residue contains the impurities of silica and iron oxide. The fused mass is treated with water.
(2) The filtrate is warmed and neutralised by passing carbon dioxide through the solution to precipitate aluminium hydroxide.
(3) The precipitate obtained of Al(OH)
3
in both processes is washed dried and heated (ignited) to get Al
2
O
3
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hey please check once and write. because balance equation is not there.
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