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iron ore roasting process

iron ore roasting process

The most important operations are roasting, smelting, and refining. Roasting, or heating in air without fusion, transforms sulfide ores into oxides, the sulfur escaping as sulfur dioxide, a gas. Smelting (q.v.) is theprocess used in blast furnaces to reduce iron ores. Tin, copper, and lead ores are also smelted.

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