摘要
选用文献报道的14个渣系铁氧化物活度aFetO作为基础实验数据,验证了基于炉渣离子–分子共存理论(IMCT)所定义的铁氧化物综合质量作用浓度NFetO表征炉渣氧化性的可能性和精度.为了得到14个渣系的NFetO,建立了CaO-SiO2-MgO-FeO-Fe2O3-MnO-Al2O3-P2O5渣系的IMCT-Ni模型,其他13个渣系NFetO可由该渣系的IMCT-Ni模型经简化得到.结果表明,铁氧化物综合质量作用浓度NFetO不仅可像活度aFetO一样表征炉渣氧化性,而且比实测aFetO精度更高.
The defined oxidation ability of metallurgical slag based on the ion and molecule coexistence theory （IMCT）, i.e., the comprehensive mass action concentration of iron oxides NFetO, was verified by comparing the calculated NFetO and the reported activity of iron oxides αFetO in selected 14 slag systems. To calculate NFetO in the selected slag systems, a thermodynamic model for calculating the mass action concentrations of structural units in CaO-SiO2-MgO- FeO-Fe2O3-MnO-Al2O3-P2O5 type slag systems, i.e., the IMCT-Ni thermodynamic model was developed. NFetO in the other 13 slag systems can be obtained by simplifing this IMCT-Ni. It is shown that the defined comprehensive mass action concentration of iron oxides NFetO is more accurate than the measured activity of iron oxides aFetO in characterizing the oxidation ability of the selected FetO-containing slag systems.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
2013年第12期1569-1579,共11页
Journal of University of Science and Technology Beijing
基金
国家自然科学基金资助项目(51174186)
关键词
铁氧化物
质量作用浓度
活度系数
共存理论
结构单元
iron oxides
mass action concentration
activity coefficients
coexistence theory
structural units
