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.
Blast furnace
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A blast furnace is a type of metallurgical furnace used for smelting to produce industrial metals, generally pig iron, but also others such as lead or copper. Blast refers to the combustion air being
Smelting
…ore in the presence of 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…
Former AHM blast furnace in Port of Sagunt, Valencia, Spain
Blast furnaces of Třinec Iron and Steel Works in Czech Republic
Charcoal burning iron blast furnace in Jackson County, Ohio, 1923
Rising carbon monoxide reduces iron oxides to pure iron through a series of reactions that occur at different areas within a blast furnace.