plural of blast furnace

A small electric furnace or kiln, loaded from the front. / (historical) A furnace in which the subject material is isolated from the fuel and the products of combustion, including gases and flying ash.

A reverberatory furnace with a circular revolving hearth, used in making steel.

plural of Pernot furnace

(obsolete) A kind of furnace used in refining, to separate the metal from cinders and other foreign matter.

plural of almond furnace

A form of furnace in which an ore is reduced to a metal

A furnace in the form of a vertical cylinder in which hot gas is forced upwards through the contained solids

A furnace having a regenerator in which gas used for fuel, and air for supporting combustion, are heated; a Siemens furnace.

plural of regenerative furnace