摘要
基于熔渣结构离子与分子共存理论和Butler方程,建立了CaO-Al2O3-TiO2熔渣表面张力计算模型。本模型利用纯组元的表面张力和摩尔体积以及熔渣中各组元表面相和体相中作用浓度(活度)可以计算出CaO-Al2O3-TiO2熔渣表面张力随熔渣成分、温度的变化规律。将计算得到的表面张力值与文献实测值进行对比,计算结果与文献实测值吻合较好。并进一步绘制了CaO-Al2O3-TiO2熔渣等表面张力线,考察了炉渣成分对表面张力的影响,以期为含TiO2渣系控制提供理论参考。
A thermodynamic model was developed for determining the surface tension of CaO-Al2O3-TiO2 molten slag based on the ion and molecule coexistence theory （IMCT） of slag structure and Butler＇s equation.The temperature and composition dependence of the surface tensions in molten CaO-Al2O3-TiO2 slag systems was reproduced by the present model using surface tensions and molar volumes of pure oxides,as well as the mass action concentrations （activities） at the surface and at the bulk phase of the slag component.The evaluated results for the surface tension showed good agreements with literature data.The iso-surface tension lines of CaO-Al2O3-TiO2 slag melt were calculated and the effect of slag composition on the surface tension was also investigated,which provided theoretical reference for the controlling of TiO2 containing slag.
出处
《上海金属》
CAS
北大核心
2014年第2期35-39,共5页
Shanghai Metals
基金
国家自然科学基金资助项目(No.50734008)
