【摘要】 本文介绍了用于计算四元均相系中组元活度的SELF-SReM4高阶亚正规溶液模型.模型由一组参数表示，根据精选的“边界条件”.可由二元系、三元系、四元系逐渐展开拟合出该组参数.用该模型计算了Mno－SiO2－al2O3－CaO四元系，包括四个三元子系中各组元的活度.SiO2－al2O3－CaO三元系的SiO2活度计算值与实验值和其它计算结果较一致；MnO-SiO2－CaO三元系计算结果与渣-金属平衡试验结果较一致更多还原

【Abstract】 a high order sub-regular solution modeI for predicting the component activities in a homogeneous region of a quaternary system was developed in the Shanghai Enhanced Lab of Ferrometallurgy, which is designated as SELF-SReM4. It is composed of some polynomials of excess mole free energies versus content variable. a group of parameters is included in the polynomials. along with the reliable known thermodynamic properties associating the homogeneous region the parameters can be evaluated. and then the component activities in that region are possible to be predicated. This paper is devoted to illustrate the applications of SELF-SReM4 for molten slag of MnO-SiO2-al2O3-CaO and its sub-ternary systems. The evaluated results were very close to those of slag-metal equilibrium experiments and the Chipman’s and Pelton’s results.更多还原