炉渣离子与分子共存理论认为,CaO-SiO2-Al2O3-MgO-TiO2渣中结构单元或离子对的作用浓度能够像传统意义上的熔渣活度一样表征化学反应能力。通过建立1 773K时高炉CaO-SiO2-Al2O3-MgO-TiO2渣中结构单元或离子对的作用浓度控制方程,运用Matlab进行求解,进而建立了该渣系计算渣铁间硫分配比的通用热力学模型。此外,该模型能够定量计算出CaO和MgO各自对渣铁间硫分配比的热力学贡献率。建立的模型的计算结果表明,当TiO2含量增加时渣铁间硫分配比及CaO的热力学贡献率逐渐降低,而MgO的贡献率逐渐上升。
Based on the ionization and molecular coexistence theory of slag,the mass action concentrations of structural units or ion couples in CaO-SiO2-Al2O3-MgO-TiO2 slag can be applied to exhibit the ability of reaction,like the classic concept of activity.A general thermodynamic model of sulphur distribution ratio between CaO-SiO2-Al2O3-MgO-TiO2 ironmaking slag and hot metal at 1 773 K was built by the means of establishing mass action concentrations equations that it can be solved by Matlab.In addition,this model can quantitatively calculate the respective contributions of CaO and MgO.The results show that the sulphur distribution ratio and the respective contributions of CaO guadually reduce when the TiO2 content increase,but the respective contributions of MgO gradually increase.
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