The reaction that does NOT define calcinations is:-
a. |
ZnCO3 |
b. |
Fe2O3.XH2O |
c. |
CaCO3MgCO3 |
d. |
2Cu2S + 3 O2 |
The reaction that does NOT define calcinations is:-
a. |
ZnCO3 |
b. |
Fe2O3.XH2O |
c. |
CaCO3MgCO3 |
d. |
2Cu2S + 3 O2 |
Calcination in carried out for carbonates and oxide ores in absence of oxygen. Roasting is carried out mainly for sulphide ores in presence of excess of oxygen.