(Steel Manuf.) A retort, used in the Bessemer process, in which molten cast iron is decarburized and converted into steel by a blast of air forced through the liquid metal.
... by heating iron until all the undesirable elements are burned out by air blasts which furnish the necessary oxygen. The iron is placed in a large retort called a converter, being poured, while at a melting heat, directly from the blast furnace into the converter. While the iron in the converter is molten, blasts of air are forced through the liquid, making it still hotter and burning out the impurities together with the carbon and manganese. ... — Oxy-Acetylene Welding and Cutting • Harold P. Manly
... two cups, the stainless-steel dishes, and the knives and the forks and spoons, going up the steps over the shielded converter and ducking his head to avoid the seat in the forward top machine-gun turret. He washed and dried the dishes, noting with satisfaction that the gauge of the water tank was still reasonably high, and glanced out one of the windows. Loudons was taking the big helicopter ... — The Return • H. Beam Piper and John J. McGuire