Question

Differente b/w roasting and calcination

Answer 1

Roasting is a pyrochemical process in which the ore is heated in the presence of oxygen or air is below its melting point. ... roasting is done in reverberatory furnace. Ex:-2ZnS+3O2 ----> 2ZnO+SO2. Calcination is also a pyrochemical process in which ore is heated in the absence of air.the is decomposed in this process.

Answer 2

Hey,

Friend,

●Roasting

•The heating if concentrated ore In the free supply of air is called roasting.

•It is only for sulphide ore.

●Calcination

•The heating of concentrated ore IN absence of air below it's melting point is called Calcination.

•It is used for carbonate ore.

Hope this will help you...