Question

difference between roasting and calcination

Answer 1

ANSWER...

ROASTING IS THE PROCESS OF HEATING CONCENTRATED ORE IN PRESENT OF AIR BEFORE IT REACHES ITS MELTING POINT.
WHILE
CALCINATION IS THE PROCESS OF HEATING CONCENTRATED ORE IN THE ABSENCE OF AIR BEFORE IT REACHES ITS MELTING POINT.


HOPE IT HELPS

Answer 2

Answer:

ROASTING:-

1. roasting it is process in which a sulphide is heated below its melting point in the presence of excess air to convert it into metal oxide.
2. EX :- Cu2S , ZnS.

CALCINATION:-

1. calcination it is a process in which a carbonate ore is heated below its melting point in the absence of air to convert it into metal oxide.
2. EX :- CuCo3 , FeCo3.