FIELD: furnaces.
SUBSTANCE: invention relates to a reverberatory furnace for aluminium scrap remelting. Furnace comprises a body formed by refractory outer side, front and rear end walls, a storage tank and an inclined platform limited by the hearth and walls, cove, two tap holes, a flue made in the front end wall, and a welded frame on which everything is placed. In the oven there is an external thermal insulation of the walls, consisting of a double layer of sheet asbestos board. Accumulation bath and inclined platform are made of corundum blocks KS-90, laid on two layers of asbest cardboard, and under the inclined platform a row of lightweight blocks is laid out. Frame of the furnace is laid out inside by two rows of lightweight blocks with two layers of asbestos board between them. Cove above the inclined platform and the bathroom furnace has a thermal insulation coating, on top of which is laid a double layer of refractory insulating mats, which further reduces the heat loss from the smelting space of the furnace. Furnace has, in the two side walls, two twenty-one injection medium-pressure mixing torches directed at an angle to an inclined platform, as well as two injection eighteen mixing torches, directed at an angle to the bottom. Furnace has two tap holes in the rear end wall, made in quick-change reinforced tap-hole bricks. Tap-hole bricks may easily be replaced with a new one in case of wear without dismantling the rear end and two side walls. Furnace is equipped with a two-stage gas-dust cleaning system, has an economizer and a post-combustion chamber. Damper of the working and the door of the slag windows provide reliable tightness, which helps to reduce the burnout and reduce heat loss from the furnace. Thermal power of the burners is 8,900 kW, which makes the furnace high-performance, allowing to conduct the forced melting mode.
EFFECT: high furnace capacity, reduction of heat and combustion losses and the possibility of environmentally friendly remelting of aluminum scrap are ensured.
8 cl, 14 dwg
