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Explain the extraction of zinc from zinc...

Explain the extraction of zinc from zinc oxide or from zinc blende (ZnS).

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The reduction of ZnO is done using coke. The oxide is made into brickettes with coke and clay for the effective heating. This is heated to 1673K. Zinc oxide is reduced to zinc.
`ZnO+CrarrZn+CO`
The vapours of zinc solidified by passing through air cooled condensers. The zinc obtained contains impurities like Cd, Pb and Fe which is called spelter. Zinc is purified by fractional distillation and then by electrolytic refining.
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