RECOVERABLE ALUMINIUM RAW MATERIAL REMELTING FURNACE Russian patent published in 1994 - IPC

FIELD: furnace for remelting recoverable aluminium raw material. SUBSTANCE: furnace has chamber with inclined hearth for remelting basic raw material and separating main product from inclusions. Chamber has charging device and window for discharging inclusions by means of scrapers. Furnace is further provided with chamber for accumulating, melting and deburdening main product, provided with dross hole disposed at the level of bottom and adapted for discharging and/or pouring materials and for preventive cleaning. This chamber is positioned within chamber for melting basic material and separating main product from inclusions. Furnace wall has at least two layers, with inner layer being made from material with thermal capacity at least equal to 0.8 kJ/kg grade and thermal conductance at least equal to 0.5 Wt/m grade. Reflectivity of dome material in infrared and red regions of absolutely black body is at least 0.6. Outer layer is made from material having thermal conductance below 0.05 Wt/m grade. Inner surface of chamber for melting basic raw material may be provided with alumochromophosphate covering. Inclusion discharge scrapers may be mounted on shaft disposed parallel to hearth in front of discharge window. EFFECT: increased efficiency and enhanced reliability in operation. 3 cl, 1 dwg