Vibration compacting of the monolithic lining of steel-teeming ladles

Abstract

Monolithic lining of 250-ton steel-teeming ladles was introduced in Orsk-Khalilovka Metallurgical Combine in 1981. The share of steel-teeming ladles with a monolithic lining is 15-20% of the total number of ladles in service.The lining work is done with mechanized equipment by casting of a fluid self-hardening mixture. The composition of the mixture is 97.5-98.5 wt. % ground quartzite and 1.8-2.5 wt. % ferrochrome slag. The density of the waterglass is 1.08-1.15 g/cm 3. The outer dimensions and profile of the pattern provide a thickness of the cast layer in the lower portion of 190 and in the upper of 150 mm. The pouring time is 30-40 min and the length of hold with the pattern 2.5-3.0 h. The reinforcing lining and the working lining of the upper four rows are made of refractory brick [i].