An enclosed structure in which material can be heated to very high temperatures, e.g. for smelting metals
Another term for electric-arc furnace.
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
A furnace which uses an electric arc as a heat source, especially for steel-making
A furnace in which the roof and walls are heated by flames and radiate heat on to material in the centre of the furnace
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