The penetration of ladle slag into refractory linings is an essential process in service,and the mechanical properties of the refractory castables are affected by the location and content of slag in the refractory cas...The penetration of ladle slag into refractory linings is an essential process in service,and the mechanical properties of the refractory castables are affected by the location and content of slag in the refractory castables.In this work,ladle slag was added into Al_(2)O_(3)-Mgo refractory castables and its influence on the microstructure evolution,mechanical properties and thermal shock resistance of the castables was investigated.The phase composition and contents of the castables during the corrosion process were calculated by FactSage TM(6.2)and studied.The results indicate that the residual strength decreases as the ladle slag addition increases from 0 to 6 mass%.While the hot modulus of rupture of the castable with 6%ladle slag significantly decreases by approximately 80%compared with the one without ladle slag.The elastic modulus and CMOR of the castables decrease with slag-adding,which leads to the increase of liquid phase contents inside the samples.展开更多
基金Key Project of the National Natural Science Foundation of China(Grant No.U21A2058)China Postdoctoral Science Foundation(2023M740971)State Key Laboratory of Refractories and Metallurgy(Wuhan University of Science and Technology,G202209).
文摘The penetration of ladle slag into refractory linings is an essential process in service,and the mechanical properties of the refractory castables are affected by the location and content of slag in the refractory castables.In this work,ladle slag was added into Al_(2)O_(3)-Mgo refractory castables and its influence on the microstructure evolution,mechanical properties and thermal shock resistance of the castables was investigated.The phase composition and contents of the castables during the corrosion process were calculated by FactSage TM(6.2)and studied.The results indicate that the residual strength decreases as the ladle slag addition increases from 0 to 6 mass%.While the hot modulus of rupture of the castable with 6%ladle slag significantly decreases by approximately 80%compared with the one without ladle slag.The elastic modulus and CMOR of the castables decrease with slag-adding,which leads to the increase of liquid phase contents inside the samples.
