Question

explain the process of calcination with the help of example​

Answer 1

Answer:

Calcination : Ore is heated to a high temperature below its melting point in the absence of dry air or in a limited supply of air. Organic matter, moisture, volatile impurities like carbon dioxide and sulphur dioxide are expelled from the ore. It makes ore porous. Decomposition of carbonate ores gives metal oxides and carbon dioxide.

ZnCO3----->∆ZnO(s)+CO2(g)

Answer 2

Answer:

Calcination is the process of converting a metal carbonate or hydroxide (present in its ore) into an oxide by heating it strongly below its melting point either in absence of air or in limited supply.

Also, it can be defined as a process used to convert ores and other solid materials by bringing about a thermal decomposition in which the reaction most of the time occurs at or above the thermal decomposition temperature.

Explanation:

Calcination is most commonly used in the decomposition of limestone (calcium carbonate) to lime (calcium oxide) and carbon dioxide.

CaCo3 → CaO + CO2

Another example is the calcination of Zinc Carbonate:-

ZnCO3 → ZnO + CO2

Hope you got your answer!