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What are the main steps of pyrometallurgy?
1. Calcination
2. Roasting
3. Smelting
4. All of the above

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Solution

Pyro metallurgy:
Extraction of metal from ore by using heat energy.
Steps involved are : Calcination, roasting, smelting, reduction etc.
Use mainly for less reactive metals : Cu, Fe, CO, Ni, Zn, Sn, Pb, etc.

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