Explain in detail roasting and calcination.Answer the given question in brief.
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Roasting is a process of heating the concentrated ore to a high temperature in presence of air. Generally, sulfide ores are roasted.
Example:
2 ZnS + 3 O2 → 2 ZnO + 2 SO2
Calcination is a process of heating ore in the absence of air to a high temperature but insufficient to melt the ore. Generally, carbonates and hydrated ores are calcined.
Example:
ZnCO3 → ZnO + CO2
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HERE'S THE ANSWER ✌
______________
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Roasting is a process of heating the concentrated ore to a high temperature in presence of air. Generally, sulfide ores are roasted.
Example:
2 ZnS + 3 O2 → 2 ZnO + 2 SO2
Calcination is a process of heating ore in the absence of air to a high temperature but insufficient to melt the ore. Generally, carbonates and hydrated ores are calcined.
Example:
ZnCO3 → ZnO + CO2
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