- Preliminary treatment: - In the preliminary treatment, the gangue is removed to concentrate the ore.
- Chemical reduction: - The reduction can be brought about in two ways:
- The reducing agent reduces the metal oxide to metal.
- The reduction by electrolysis.
- Refining: - The metal obtained by chemical reduction contains impurities. The impure metal is purified.
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Metallurgy
Ans. The process
of extraction of metals from their ores, refining, and alloying them is called
metallurgy. The three important steps involved in the extraction of metals from
their ores are: