FIELD: metallurgy.
SUBSTANCE: furnace consists of case made with refractory external side, front and back end walls, of storage bath and of inclined platform restricted with sole and walls, of roof, of tap hole, of gas duct and of welded frame whereon everything is arranged. Walls of the furnace are externally heat insulated with four layers of sheet asbestos cardboard. The inclined platform and the storage bath are laid out of sole blocks MLS-62 on two layers of asbestos cardboard and on a pad out of dry high-silica sand which facilitates maintaining heat in the furnace bath preventing its emittance to the frame. Inside the frame of the furnace is lined with three rows of light-weight-bricks and two rows of sheet asbestos cardboard reducing heat emission from the bath via the frame. On top the roof of the furnace has a layer with triple heat-insulating coating, a layer of light-weight bricks and a layer of refractory heat insulating mats on it to additionally save heat in the furnace. In the side wall of the furnace there are arranged three burners; also, two-row eight-mixing and GBG-1.2 burners are directed to the inclined platform, while one burner GBG-1.2 is directed to the sole of the furnace. The furnace consists of the tap hole in the side wall made out of quick removable tap bricks in a box, of lined rotating pan with a lined chute welded to it and rotating at angle of 130° for casting metal into casting equipment positioned in a sector at angle of 130° and of a drive for lifting and lowering a door of a charging hole. The drive consists of an electric engine, of a clutch, of a worm reducer, of two shafts with pulleys, of counter-weights, of cables, of chains and of the door.
EFFECT: simplified design, low losses of heat and ecologically safe scrap re-melting.
7 cl, 3 dwg
