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Why should the metal sulphides and carbonates be converted to metal oxides in the process of extraction of metal from them?

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asked Jan 30, 2018 in Chemistry by Kundan kumar (49,132 points) ● 34 ● 379 ● 1011

Why should the metal sulphides and carbonates be converted to metal oxides in the process of extraction of metal from them?

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answered Jan 30, 2018 by Vikash Kumar (144,729 points) ● 8 ● 11 ● 21
 
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It is easier to obtain metal from its oxide, as compared from its sulphides and carbonates. So prior to reduction, sulphide ores are converted into oxides by roasting and carbonate ores by calcination.

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