Question

Give difference between
roasting and calcination​

Answer 1

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roasting and calcination..

Roasting : It is the process of converting an ores to oxide by strongly heating it in the presence of excess of air . ... Calcination : It is the process of converting an ores to oxide by strongly heating it in limited air . For example carbonate ores are converted into the oxide by heating in the absence of air.

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Answer 2

Answer:

Roasting - when the sulphide ores are converted into oxides by heating strongly in the presence of excess air. It's know as roasting.

Calcination - when the carbonate ores are changed into oxides by heating strongly in limited Air. it's called calcination.