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pyrometallurgy
The roasting, smelting, and other high-temperature chemical reactions.

Pyrometallurgy has the advantage of giving fast reactions and yielding a molten or gaseous product that can easily be separated from unwanted components.

The extracted metal may need further refining or purifying; electro-metallurgy can be used again at this stage. The molten metal that is produced may then be cast by pouring it into a mold or forming it into ingots.

This entry is located in the following unit: Metallurgy Topics or Metal Technology + (page 2)