explain the process involved in extraction of zinc from its are
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Zinc is extracted from the purified zinc sulfate solution by electrowinning, which is a specialized form of electrolysis. The process works by passing an electric current through the solution in a series of cells. This causes the zinc to deposit on the cathodes (aluminium sheets) and oxygen to form at the anodes.
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The extraction of zinc from zinc blende involves the following steps.
1. Concentration: The ore is crushed and then concentrated by froth-floatation Process.
2. Roasting: The concentrated ore is then roasted in the presence of excess of air at about 1200k: 2ZnS+3O2→Δ2ZnO+2SO2.
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