with recuperator systems for energy conservation. Furnaces equipped with large fume hoods over the doors Stationary melting furnaces are available with melt rate capacities between 1 and 30 tonsper hour. Furnaces can be gas, diesel oil or heavy fuel oil fired and be designed to meet the specific requirement of the customer. The furnaces generally have a rectangular shape and large doors, extending over the full width of the furnaces so that charging can be fast and cleaning fast and thorough. Regenerative burner systems are very popular because of the excellent energy savings these systems do achieve, however recuperative systems as well as ambient air systems are also available.