高阶亚正规溶液模型及其在MnO—SiO2—Al2O3—CaO炉渣中组元活度…

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。

HIGH ORDER SUB-REGULAR SOLUTION MODEL AND ITS APPLICATIONS IN THE CALCULATION OF COMPONENT ACTIVITIES OF MnO-SiO_2-Al_2O_3-CaO MOLTEN SLAG

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.