改进的MIVM在含磷二元熔渣中的应用  

Application of modified MIVM in calculation of activity of phosphorus-containing binary slag

作　　者：刘刚刚 戴衡 陶东平[1] LIU Ganggang;DAI Heng;TAO Dongping(Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,Yunnan,China;BAOWU Carbon Materials and Technology Co.,Ltd.,Shanghai 201999,China)

机构地区：[1]昆明理工大学冶金与能源工程学院,云南昆明650093 [2]宝武炭材料科技有限公司,上海201999

出　　处：《钢铁研究学报》2021年第1期15-24,共10页Journal of Iron and Steel Research

基　　金：国家自然科学基金资助项目(51464022)。

摘　　要：由于含有P_(2)O_(5)的二元炉渣体系结构复杂,具有负偏差强和不对称性高的特点,故现有热力学模型对其组元活度曲线的拟合效果较差。采用改进的分子相互作用体积模型(M-MIVM)对22个常规二元熔渣拟合,总平均相对误差为11.53%。在对5个二元含磷熔渣体系P2O5活度进行数据拟合时,M-MIVM相对于实验值的平均相对误差为8.83%,与MIVM伪多元法(54.88%)、正规溶液模型(68.36%)、亚正规溶液模型(23.77%)及改进的准正规溶液模型(23.95%)相比,M-MIVM显著提高。因此,M-MIVM可为炼钢脱磷过程提供更为准确的二元熔渣热力学数据;同时,也为该模型更准确预测多元复杂熔渣体系热力学数据提供基础。Because of the complex structure of binary slag containing P_(2)O_(5) and the characteristics of strong negative deviation and high asymmetry, the existing thermodynamic model has a poor fitting effect on the component activity curve. The modified molecular interaction volume model(M-MIVM) was used to fit 22 kinds of conventional binary slag, and the total average relative error is 11.53%. When data fitting is performed on the P2O5 activity of five binary phosphorus-containing slag systems, the average relative error of M-MIVM to the experimental value is 8.83%, which is compared with MIVM pseudo-multivariate method(54.88%) and regular solution model(68.36%), the sub-regular solution model(23.77%) and the improved quasi-regular solution model(23.95%), M-MIVM is significantly improved. The results show that M-MIVM can provide more accurate binary slag thermodynamic data for the dephosphorus process of steelmaking, and also provide the basis for the model to predict the thermodynamic data of multicomponent complex slag system more accurately.

关 键 词：熔渣 热力学模型 M-MIVM 活度 含磷二元熔渣 

分 类 号：TF09[冶金工程—冶金物理化学]