FIELD: metallurgy.
SUBSTANCE: furnace consists of a case made with refractory external side, front and back end walls, a storage bath and an inclined platform restricted with a sole and walls, two drain tapholes, a rotating pan, a gas duct and a welded frame whereon everything is arranged. The furnace case is fitted by a welded steel box equipped with heat insulation between the box and each wall consisting of double heat insulation mullite fibreglass layer and of sheet asbestos cardboard. The storage bath and the inclined platform are made from mullite corundum blocks of increased density which are laid on the heat insulation mullite fibreglass layer and light brick. The furnace case is filled by concrete with the filler from crushed light fire brick, the crown above the inclined platform and the bath has heat-insulation plaster above which double layer of refractory heat-insulation mats is laid. One side wall of the furnace is provided with two injection ten-mixer medium-pressure burners directed at an angle to the inclined platform while another side wall is furnished with one injection ten-mixer burner directed at an angle to the inclined platform and one 19-mixer burner directed to the furnace bottom, a reheat chamber lined by refractory bricks to house a four-mixer gas injection burner, an air blower, two tapholes in the side walls to let out the molten metal made in the quick-change taphole bricks.
EFFECT: higher furnace efficiency, reduced heat and burn-off losses and possibility of ecologically clean remelting of aluminium scrap.
7 cl, 12 dwg
