基于修正的(NBO/T)比值的黏度模型
摘要
Considering that the viscosity of molten slag cannot be accurately calculated from (NBO/T) ratio using the traditional method, this paper firstly studied the effects of different oxides on the polymerization degree of molten slag, proposed a new method for calculating (NBO/T) ratio, and developed an estimation model of viscosity for aluminosilicate melts based on (NBO/T) ratio. The new viscosity model was adopted to predict the viscosities of the ternary system of CaO-SiO2-Al2O3 and the quaternary systems of CaO-SiO2-MgO-Al2O3 and CaO-SiO2-Al2O3-RO (R2O), and the calculated results were satisfactory in comparison with those of the Urbain model and the modified Iida model. The present model can predict the viscosity of the CaO-SiO2-MgO-Al2O3-R2O (K2O or Na2O) system effective.