DEVICE FOR HEATING OF TAR-DOLOMITE LINING OF CASTING LADLES Russian patent published in 1998 - IPC

FIELD: metallurgy, in particular, heating of ladles made of tar-dolomite bricks. SUBSTANCE: device has gas burner located in ladle cover at a distance of 0.7-1.4D from ladle bottom. Burner has oxygen branch pipe. Provided in ladle cover is lined circular gas discharge channel enclosing the burner and whose length is equal to 0.15-0.6D. Cover is lined and provided with apron and suction circular box connected by branch pipes with oxygen injectors. The latter are located in refractory embrasures of cover. Apron embraces ladle generating line with gap equalling 0.05-0.2D. Refractory embrasures are located in cover lining over diameter equalling 0.4-0.8D, where D is ladle bottom diameter. EFFECT: provision of teeming of high-grade steels from ladles with tar-dolomite lining without pollution of environment. 2 dwg, 1 tbl