RECYCLING METHOD OF RESIDUAL CASTABLES FOR TEEMING LADLE

摘要

A method for recycling a residual slip casting castable using a calcareous raw material and ladle slag is provided to suppress cost increase due to an increase in the consumption of the new slip casting castable and reduce construction time by recycling the residual slip casting castable of the ladle slag, thereby reducing the generation amount of waste and the consumption of a new slip casting castable. A method for recycling a residual slip casting castable using a calcareous raw material and ladle slag comprises the steps of: injecting a calcareous raw material into a repaired ladle just before performing a tundish operation to adjust a mixing ratio of the ladle slag to the calcareous raw material to a range of 9:1 to 35:1 by weight; allowing a slag coating layer with a thickness of 5 to 20 mm to be formed on a residual slip casting castable while a melt surface is lowered during the casting process, and cooling the slag coating layer to room temperature after completing the casting process; and preheating the new slip casting castable to an ordinary temperature range of 1000 to 1200 deg.C after constructing a new slip casting castable of alumina-magnesia with a thickness of 50 to 70 mm on the residual slip casting castable on which the slag coating layer has been formed by completing the cooling process.