Question

write 3 difference between calcilation and rosting​

Answer 1

Roasting is the process in which the ore is heated below its melting point in presence of air to oxidise the impurities. eg: carbon, sulphur etc removed as their gaseous oxides. 

Calcination is the process of heating the ore below its melting point an absence of air to remove volatile impurities like arsenic etc.

Answer 2

Explanation:

Roasting

1. ore is heated in excess of air.
2. this is use for sulphide ore
3. So2 is produce with metal oxide.

calcination

1. ore is heated in the absence of air.
2. this is used for carbonate ore.
3. co2 is produced along with metal oxide.