A) calcination
B) smelting
C) roasting
D) leaching
Correct Answer: A
Solution :
Calcination: It is the process of heating the ore strongly in absence of air. The volatile impurities are removed and the mass becomes porous. Carbonate and oxide ores are generally calcined when they lose moisture, \[\text{C}{{\text{O}}_{\text{2}}}\]and other volatile impurities. \[\underset{\text{Malachite}}{\mathop{\text{CuC}{{\text{O}}_{\text{3}}}\text{Cu(O}{{\text{H}}_{2}}\text{)}}}\,\xrightarrow{\text{Calcination}}2CuO+C{{O}_{2}}\] \[+{{H}_{2}}O\]
You need to login to perform this action.
You will be redirected in
3 sec
