Smelting
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Smelting is a process of applying heat and a chemical reducing agent to an ore to extract a desired base metal product. It is a form of extractive metallurgy that is used to obtain many metals such as
Electric phosphate smelting furnace in a TVA chemical plant (1942)
Copper smelter, Chelyabinsk Oblast, Russia
Electrolytic cells at an aluminum smelter in Saint-Jean-de-Maurienne, France
Cowles Syndicate of Ohio in Stoke-upon-Trent England, late 1880s. British Aluminium used the process of Paul Héroult about this time.
Pig iron
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Pig iron is an intermediate good used by the iron industry in the production of steel. It is developed by smelting iron ore in a blast furnace. Pig iron has a high carbon content, typically 3.8–4.7%,
Smelting
…oxygen from air, oxidizing the ore and liberating the sulfur as sulfur dioxide gas. Smelting most prominently takes place in a blast furnace to produce pig iron, which is converted into steel. Plants for the electrolytic reduction of aluminium are referred to as aluminium smelters. Smelters can be classified…
Pig iron used to manufacture ductile iron
Casting pig iron at the Iroquois smelter in Chicago between 1890 and 1901
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