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Differentation between calcination and roasting? |
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Answer» Calcination is heating of carbonate ores in limited air Roasting is heating sulphide ores in excess airThese are used in order to reduce carbonate and sulphide ores to oxide form •calsination is the process in which carbonate ore is heated.•During this process lots of CO2 gas is released.•For example:CaCO3-------->CaO+ CO2.*Roasting is the process in which sulphide ore is hested.*During this process lots ofSO2 gas is realesed.*For example:HgS+O2------->HgO+SO2. |
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