Question

Explain Calcination and Roasting​

Answer 1

Answer:

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

Roasting is the process in which the ore is heated below its melting point in presence of air to oxidise the impurities.

hope this will help you.

Answer 2

Answer:

The ore is heated to a high temperature below its melting point in the absence of air or limited supply of air

whereas

Roasting is a process of heating of sulphide ore to a high temperature in presence of air.It is step processing or certain ore