FIELD: metallurgy.
SUBSTANCE: invention relates to a reverberatory furnace for remelting aluminium scrap. The furnace is comprised of a body formed by fire-resistant external side, front and rear end walls, a cumulative bath and an inclined platform, defined by a hearth and walls, an arch, three drainage tapholes, a flue and a welded frame whereon all the components are placed. The hearth of the cumulative bath and the inclined platform are made of corundum blocks KS-90 laid on lightweight bricks ShL-0.4. A steel box is welded to the frame of the furnace, with heat insulation between said box and each wall, consisting of double heat-insulating mullite silica cardboard and sheet asbestos cardboard, the arch above the inclined platform and the bath has a fire-resistant heat-insulating lining coating, and a layer of heat-insulating mullite silica cardboard is laid thereon. Three injection two-row fourteen-mixer medium pressure burners are located in one side wall, two of said burners directed at an angle to the inclined platform and at an angle to the axis of the furnace, and one directed at an angle to the hearth and at an angle to the axis of the furnace, two injection two-row fourteen-mixer medium pressure burners are located in the other side wall, directed at an angle to the inclined platform and at an angle to the axis of the furnace, an injection three-row thirty-mixer medium pressure burner is located in the rear wall, directed at an angle to the hearth of the furnace. The furnace has an afterburning chamber lined with fire-resistant bricks, a working window and a slag window. Three tapholes made in quick-change taphole bricks are provided in the rear end wall, wherein the furnace has three rotary bowls with lined rotary runners welded thereto, rotatable in the process of casting of liquid metal, an economiser, and a dust and gas purification system for ensuring environmental sustainability of the process.
EFFECT: increase in the productivity, reduction of heat and melting losses are provided.
9 cl, 11 dwg
