Note:  Do not rely on this information. It is very old.

Reverberatory Furnace

Reverberatory Furnace, a class of furnaces largely employed in the smelting of various metals - e.g. lead, copper, tin, etc. They differ in details according to the special purpose for which they are intended, but all are made with low arched roofs, which deflect the flames and products of combustion of the burning fuel down upon the surface of the ores, etc., which are being treated. These are therefore heated directly by the furnace flames, and, owing to the presence of reducing gases, as CO, etc., in the combustion products, are partially or wholly reduced to the metallic state.