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furnace British & World English

An enclosed structure in which material can be heated to very high temperatures, e.g. for smelting metals

arc furnace British & World English

Another term for electric-arc furnace.

blast furnace British & World English

A smelting furnace in the form of a tower into which a blast of hot compressed air can be introduced from below. Such furnaces are used chiefly to make iron from a mixture of iron ore, coke, and limestone

electric-arc furnace British & World English

A furnace which uses an electric arc as a heat source, especially for steel-making

reverberatory furnace British & World English

A furnace in which the roof and walls are heated by flames and radiate heat on to material in the centre of the furnace

cupola furnace in cupola British & World English

A cylindrical furnace for refining metals, with openings at the bottom for blowing in air and originally with a dome leading to a chimney above