Which sequence best describes the steps for obtaining a pure metal from its ore?
Ore is enriched, then metal is extracted, and finally purification is performed.
Metallurgy proceeds in three broad stages. First the mined ore is enriched (concentration) to remove the bulk of the gangue (worthless earthy matter) so that a rich concentrate of the metal compound is obtained.
The concentrated ore is then subjected to reduction (through roasting/calcination followed by smelting or electrolysis) to extract the crude metal. Finally the crude metal is refined by methods such as electrolytic refining or distillation to give the pure metal. Enrichment must come before extraction, and refining/purification must come last.
Hence, the answer is Ore is enriched, then metal is extracted, and finally purification is performed.
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