smelting
Definition
Metal extraction process in which an ore (usually mixed with purifying and/or heat generating substances such as limestone and coke) is heated at high temperature in an enclosed furnace. After a reducing reaction (see reduction), lighter ore-components (impurities called slag or tailing) rise to the top and float on the molten metal. Smelting is opposite of roasting which involves an oxidizing reaction (see oxidation).
smelting is in the Industries, Manufacturing, & Technology subject.
smelting appears in the definitions of the following terms: perfluorocarbon (PFC) and coke
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