Examples of roasting and calcination processes.
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Roasting is for sulphide ores
2ZnS+3O₂→2ZnO+2SO₂
Calcination is for carbonate and hydrated ores
ZnCO₃→ZnO+CO₂
2ZnS+3O₂→2ZnO+2SO₂
Calcination is for carbonate and hydrated ores
ZnCO₃→ZnO+CO₂
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