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How can the metal be obtained from its c...

How can the metal be obtained from its carbonate ore?

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The carbonate ore is first heated strongly in limited supply of oxygen and changed into its oxide. This process is called calcination.
`ZnCO_3(s) to^(Heat)ZnO(s)+CO_2(g)`
Zinc oxide is then reduced to zinc metal by heating it with carbon. This process is called reduction.
`ZnO(s)+C(s) to^(Heat)Zn(s)+CO(g)`
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VK GLOBAL PUBLICATION-METALS AND NON-METALS-SHORT ANSWER QUESTION -II
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