FIELD: furnaces; technological processes.
SUBSTANCE: invention relates to a reverberatory furnace for aluminum 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, two large vaults, the lower and upper one, located one above the other, there is a gap between them, which acts as a chimney, three flanges and a welded frame, on which everything is arranged. To furnace frame welded steel box, having heat insulation between it and each wall, consisting of asbestos crumbs, refractory wool, refractory mats and triple layer of asbestos cardboard sheet. Accumulating bath and inclined platform are made of corundum blocks KS-95, laid on three layers of asbestos cardboard with padding from dry sand mixed with asbestos crumbs. Furnace frame is laid inside by two lines of light-weight one-and-a-half bricks ShL-0.4 with three layers of asbestos cardboard under the bottom and two rows of light-weight one-and-a-half bricks ShL-0.4 with six layers of asbestos cardboard at the inclined platform; at that, the welded frame is filled with concrete with asbestos crumb filler. On top of upper arch there is a triple layer of refractory heat-insulating mullite-siliceous felt MKRV-200 and two rows of light-weight one-and-a-half bricks ShL-0.4. Furnace has in each side wall two injection two-row twenty-six-mixers of medium pressure, directed at an angle to axis of furnace and at an angle to inclined platform and on bottom. Furnace has three tapholes in the end rear wall, made in quick-change reinforced taphole bricks. Furnace is equipped with dust-gas cleaning system. Shutters of working and slag windows provide reliable tightness. Thermal power of burners makes 11,900 kW, which makes the furnace high-efficiency, allowing to conduct forced mode of melting.
EFFECT: providing high efficiency of the furnace, reduction of heat and loss losses and possibility of ecologically pure remelting of aluminum scrap.
8 cl, 11 dwg
