Furnace, Bell Type

A type of mobile batch furnace that is cylindrically shaped and moved from load to load with a crane. The material is placed on a fixed hearth or “base” and then covered with a retort or “inner cover” to provide a gas-tight chamber for the furnace atmosphere. The bell furnace is then placed onto the base over the inner cover. Bell furnace systems use a convection fan that is located in the base below the material. A “forced cooler” may be placed over the inner cover to reduce the temperature to a level that will not discolor the material when exposed to air.