AN ESTIMATION MODEL FOR THE VISCOSITIES OF CAF_2-(CAO)-Al_2O_3 SLAGS

摘要

In the preset work, the viscosity model (named modified KTH model) proposed by Sichen Du and S. Seetharaman et al and extended by Shu Qi-feng was applied to the ESR slag systems. A correlation to predict the viscosities of CaF2-(CaO)-Al_2O_3 slags using interaction coefficients of different cations in the presence of O~(2-) and viscosity interaction coefficients between O~(2-) and F" in the presence of different cations has been developed. The interaction coefficient between O~(2-) and F~- in the presence of Al~(3+) was determined from the experimental data as shown in known literatures. The good agreement between the calculated viscosities and the experimental data in the CaF_2-(CaO)-Al_2O_3 systems has indicated that this approach can be successfully employed to predict the viscosities of ESR slags.