Abstract: The experiments were designed according to the uniform design method and the data were processed with quadratic polynomial regression analy sis.The 11 coating components seleced from the 16 components were taken as independent variables and the uniform design table U₃₀(10¹¹)was selected to design the experiment. The mathematical model was established and the interactions trend figures were obtained.The mathematical model indicates the complicated relations among the factors and the response.It also indicates the influences of each factor to the target by the coefficients. The trend figures of barium carbonate-titanium dioxide, barium carbonate- hematite and hematite-wollastonite can directly indicate the influences of interactions among coating components on the slag detachability.The titanium dioxide and hematite have positive effects at definite conditions.But the hematite doesn' t have any influences on the slag detachability when wollastonite is at 5.0 wt%.