A structure-based modeling of the CaO−‘FeO’−MgO−Al₂O₃−SiO₂ system and its subsystems was investigated based on iron extraction from nickel slag by aluminum dross. Parameters optimization in the present model indicated that the coefficient of free O²⁻ in FeO, \(a_{{{\text{O}}_{{{\text{FeO}}}}^{{2 - }} }}\), on the lengths of network linkage had the largest value and \({\text{O}}_{{{\text{FeO}}}}^{{2 - }}\) (free O²⁻ in FeO) had the largest mobility. The coefficients of bridging oxygen (a_Si−O−Al and a_Al−O−Al) were lower than those of non-bridging oxygen and free oxygen (O²⁻). Viscosity prediction for the CaO−‘FeO’−(8 wt.%) MgO−Al₂O₃−SiO₂ system was conducted at a fixed slag basicity, which indicated that the predicted viscosity changed monotonously with the FeO content. However, the non-monotonous evolution with Al₂O₃ content reflected the amphoteric behavior of Al₂O₃. In addition, the performances of the present model in predicting viscosity from binary (‘FeO’−SiO₂) to quinary (CaO−‘FeO’−MgO−Al₂O₃−SiO₂) system were analyzed and a comparison with the established models was made.

基于铝渣从镍渣中提取铁，研究了CaO-'FeO'-MgO-Al ₂ O ₃ -SiO ₂系统及其子系统的基于结构的模型。在本模型中的参数优化表明，FeO中的自由O ²⁻系数为\（a _ {{{\ text {O}} _ {{{\ text {FeO}}}} ^ {{2-}}} } \）在网络链接的长度上具有最大值，并且\（{\ text {O}} _ {{{\ text {FeO}}}} ^ {{2-}} \）（自由O ²⁻在FeO中）具有最大的迁移率。桥接氧（的系数一个_{的Si-O-Al系}和一_AL-O-的Al）比非桥连氧和游离氧（O的下²⁻）。CaO-'FeO'-（8 wt。％）MgO-Al ₂ O ₃ -SiO ₂系统在固定的矿渣碱度下进行粘度预测，表明预测的粘度随FeO含量单调变化。然而，用Al非单调进化₂ ö ₃含量反映Al的两性行为₂ ö ₃。此外，分析了本模型在预测从二元（'FeO'-SiO ₂）到五元（CaO-'FeO'-MgO-Al ₂ O ₃ -SiO ₂）体系的粘度时的性能，并与建立的模型进行了比较。模型制作了。