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An ore gives carbon dioxide on treatment...

An ore gives carbon dioxide on treatment with a dilute acid. What steps will you take to convert such a concentrated ore into free metal?

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A metal carbonate reacts with a dilute acid to from carbon dioxide. Therefore, this ore is a carbonate ore. Carbonate ore is converted into free metal in the following two steps:
(i) Calcination: the carbonate ore is strongly heated in the absence of air to get the metal oxide.
Metal carbonate `to^(Calcination)` Metal oxide +Carbon dioxide
(ii) Reduction: The metal oxide is reduced with carbon to get free metal.
Metal oxide +`Carbon_((Coke)) to^(Reduction)`+Metal+Carbon monoxide.
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