FIELD: metallurgy.
SUBSTANCE: invention relates to a reverberatory furnace for aluminium scrap remelting. A furnace includes a housing formed with refractory external side, front and rear end walls, a storage bath and an inclined platform, which are restricted with a bottom and walls, an arch, a drainage tap-hole, a gas duct and a weld steel casing consisting of a lower part and two upper parts fixed on the lower part and located above the bottom and the inclined platform. The furnace housing is arranged inside the steel casing; besides, the furnace has a turning mechanism and is supported from a steel base. The storage bath and the inclined platform are made from mullite-corundum blocks of MKS-72 grade, which are laid onto a heat-insulating glass-fibre mullite-silica cardboard and light-weight fire-clay brick of ShL-0.4 grade. The steel casing has heat insulation between it and each wall, which consists of a triple heat-insulating glass-fibre mullite-silica cardboard, and the triple heat-insulating fibre-glass mullite-silica cardboard and heat-insulating mats arranged from above the arch. The furnace is provided in one of its side walls with two injection fifteen-mixing burners of intermediate pressure, which are directed at an angle to the inclined platform; the other side wall is provided with one injection fifteen-mixing burner; the arch is provided with two seventeen-mixing burners, which are directed at an angle to the bottom; operating and slag openings equipped with hydraulic actuators for lifting and lowering of dampers, and a three-stage dust-and-gas cleaning unit consisting of a mixing chamber, an induced draft fan, a gas cleaning block, a rough dust cleaning cyclone, and a cartridge filter for fine dust cleaning.
EFFECT: providing high furnace efficiency and possibility of performing a forced melting mode.
5 cl, 11 dwg
