Equipment Description
The furnace comprises a refractory lined rotating cylinder, swing aside charge door with integral burner and flue, tilt cradle, stationary floor mounted supports, tilting fume hood and control cabinet.
Furnace Construction
Charging and discharging are both achieved through an opening in the front of the furnace. The charge/discharge door houses the burner and flue which allows the flue gases to attain a double pass. Opening is actuated via a hydraulic actuator which moves about a pivot located to the side. This requires only one position for flexing of the gas, air and electrical cables and results in the furnace door moving to one side with a total rotational travel of 180 degrees. When closed, the front section is a close fit to the rotating body thus leakage of the flue gases during normal operation is minimised.
Refractory Lining
The refractory lining is of a high quality, abrasion resistant brick and castable, backed up with high density insulation board. The castable lining is held in place by stainless steel V-anchors. The charge/burner door is lined with a dense hot face castable and an insulating backup up. The flue is integral with the door lining.
Furnace Waste Gas Ducting
The flue canopy is directly mounted on to the tilt cradle with the duct terminating on the pivot axis so that fumes may continue to be extracted via a rotating joint throughout the full range of tilt. The flue duct battery limit is a stationary flange at the rotating joint. This system requires an induced exhaust fan downstream of our battery limit.
Electrical Cabinet
The electrical control cabinet has an environmental rating of IP55 and is engineered to be mounted either adjacent to or remotely from the furnace. The electrical battery limit is the cabinet mounted electrical isolation device.
Combustion System
The gas train components have an environmental rating of IP54. The combustion air blower is fitted with noise attenuation on the inlet to reduce noise levels to 83 dBa at 1 metre.
Safety
Floor mounted personnel protection guard rails can be provided which are engineered to the Australian Standard and are adjacent to moving parts outside frame support and around hot areas. Guards are provided across the driven end near the rotating motor, and beside the furnace on each side, protecting personnel from the door opening.
