MIVM对含V2O3多元熔渣体系组元活度的预测

刘起岑; 李亚育; 孙应; 陶东平

doi:10.13228/j.boyuan.issn0449-749x.20150132

钢铁 ›› 2016, Vol. 51 ›› Issue (2) : 28-37. DOI: 10.13228/j.boyuan.issn0449-749x.20150132

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MIVM对含V2O3多元熔渣体系组元活度的预测

刘起岑，李亚育，孙应，陶东平

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Prediction of multi-component activities in molten slags containing V2O3 by model of MIVM

刘起岑，李亚育，孙应，陶东平

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摘要

为了研究钒在攀钢转炉中的热力学行为及分配，根据钒渣的成分对CaO-MgO-Al2O3-V2O3-SiO2熔渣中各组元的活度进行研究。应用分子相互作用体积模型（MIVM）及其伪多元法预测MgO-Al2O3-SiO2、CaO-V2O3-SiO2、CaO-MgO-Al2O3-SiO2渣系中某组元的活度值，并与试验值对比。结果表明，MIVM伪多元法预测值与试验值吻合良好，MgO-Al2O3-SiO2渣系中Al2O3的平均相对误差为15%；CaO-V2O3-SiO2渣系中V2O3的平均相对误差为33%；CaO-MgO-Al2O3-SiO2渣系中SiO2的平均相对误差为13%。在此基础上，利用MIVM预测CaO-MgO-Al2O3-V2O3-SiO2熔渣中各组元的活度，并将V2O3的预测值与试验值对比分析，结果表明，预测值与试验值吻合良好，都呈正偏差，平均相对误差为44%，V2O3的活度随碱度的提高而下降。

Abstract

In order to study the thermodynamic behavior and distribution of vanadium in Panzhihua’s converter， it is necessary to investigate the activity of each component in CaO-MgO-Al2O3-V2O3-SiO2 molten slag， according to the compositions of vanadium slag. The study applied the model of molecular interaction volume (MIVM) and its pseudo-multicomponent approach to predict the activities in slag system， such as Al2O3-CaO-MgO， CaO-SiO2-V2O3， and CaO-MgO-Al2O3-SiO2 slag system. The results of prediction were compared with the experimental data. The results showed that the predicted values of activity by MIVM pseudo-multicomponent approach were in good agreement with experimental data. In the Al2O3-CaO-MgO slag system， the predicted average relative error of Al2O3 activity was 15% by MIVM. In the CaO-SiO2-V2O3，CaO-MgO-Al2O3-SiO2 systems， the predicted average relative errors of the activity of V2O3 and SiO2 were 33% and 13% by MIVM. On this basis， the application of MIVM predicted the activities of each component in the slag system of CaO-MgO-Al2O3-V2O3-SiO2， and the predicted activity of V2O3 was compared with the experimental data. The results showed that the predicted values were in good agreement with experimental data， and both the positive deviation and the average relative errors were 44%. the V2O3 activity decreased with the increase of basicity.

关键词

关键词：热力学模型活度预测三氧化二钒熔渣

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刘起岑, 李亚育, 孙应, 等. MIVM对含V2O3多元熔渣体系组元活度的预测[J]. 钢铁, 2016, 51(2): 28-37 https://doi.org/10.13228/j.boyuan.issn0449-749x.20150132

LIU Qi-Cen, LI Ya-Yo, XUN Ying, et al. Prediction of multi-component activities in molten slags containing V2O3 by model of MIVM[J]. Iron and Steel, 2016, 51(2): 28-37 https://doi.org/10.13228/j.boyuan.issn0449-749x.20150132

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