Question

EXPLAIN THE TERM ROASTING AS USED IN METALORGICAL PROCESS?GIVE ONE SUITABLE EXAMPLE FOR IT

Answer 1

Roasting refers to heating a sulphide ore in presence of air to get oxide per which can be reduced easily into corresponding metal by reduction methods

Answer 2

Answer:

Roasting : It is the process of heating the ore in the presence of excess of air. this method is used in case of sulphide ores. The sulphates are converted into oxides by roasting and SO2 is evolved.

Ex : 2PbS+3O2-->2P6O+2So2