Recycling method of residual castables using dolomite and slag

摘要

PURPOSE: A method for recycling the residual slip casting castable using dolomite and slag is provided which not only contributes to reduction of waste by recycling the residual slip casting castable, but also reduces construction cost and period by increasing interfacial adhesion between residual and new slip casting castables. CONSTITUTION: The recycling method of residual slip casting castable using dolomite and slag comprises the steps of forming a slag coating layer having thickness of 3 to 10 mm on the surface of the residual slip casting castable of the inner wall of the ladle by tilting the ladle after mixing the dolomite raw material with the ladle slag by injecting the dolomite raw material into ladle so that ladle slag generated after skimming slag of molten steel and dolomite raw material are mixed in a weight ratio of 70:1 to 90:1; cooling the ladle to an ordinary temperature, and constructing new slip casting castable to a thickness of 50 to 70 mm on the slag coating layer; and preheating the ladle to a temperature of 1,000 to 1,200 deg.C.