FIELD: metallurgy.
SUBSTANCE: furnace consists in cylindrical housing, burner device, charging loading, tap hole for melted metal drainage and tap hole for liquid slag. Furnace also has heat-insulating layer that consists of four layers of asbestos-sheet millboard and layer of lightweight chamotte that is covered by refractory layer from mullite-corundum mass. Burner device is presented by gas induction burner fixed in the cover that closes charging hole located in the front end wall of the furnace. Burner has thirteen agitators, five of which are equipped with nozzles and located in the centre with provision of flame 2.6 m long, and eight agitators are located along the periphery with provision of flame 1.5 m long in case of gas-air mixture combustion. Note that the furnace is done with the possibility of operation on natural and artificial draft with the system of gas treatment for obtaining ecologically pure process that consists of mixing chamber, smoke exhauster, gas treatment machine, cyclone and framed bag-type filter.
EFFECT: invention allows decreasing emission of hazardous substances into the atmosphere, decreasing heat loss and extension of furnace service life.
3 cl, 8 dwg
