东北大学学报（自然科学版）

东北大学学报（自然科学版） ›› 2021, Vol. 42 ›› Issue (5): 652-657.DOI: 10.12068/j.issn.1005-3026.2021.05.007

• 材料与冶金 • 上一篇    下一篇

CaO-SiO2-MgO-Al2O3四元渣系Al2O3活度预测模型

郭永春， 郑海燕， 胡心光， 沈峰满   

  1. (东北大学 冶金学院， 辽宁 沈阳110819)
  • 修回日期:2020-09-09 接受日期:2020-09-09 发布日期:2021-05-20
  • 通讯作者: 郭永春
  • 作者简介:郭永春(1992-)，男，陕西咸阳人，东北大学博士研究生； 沈峰满 (1958-) ， 男， 黑龙江密山人， 东北大学教授， 博士生导师.
  • 基金资助:
    基金项目；(半空) 基金项目.国家自然科学基金资助项目(NSFC51774071，NSFC51974073，NSFC51874080，NSFC51604069)； 中央高校基本科研业务费专项资金资助项目(N182504008)； 辽宁省自然科学基金资助项目(2019-MS-132).

Prediction Model of Al2O3 Activity in CaO-SiO2-Al2O3-MgO Quaternary Slag System

GUO Yong-chun， ZHENG Hai-yan， HU Xin-guang， SHENG Feng-man   

  1. School of Metallurgy， Northeastern University， Shenyang 110819， China.
  • Revised:2020-09-09 Accepted:2020-09-09 Published:2021-05-20
  • Contact: SHENG Feng-man
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摘要： 高炉渣系各组元活度对高炉冶炼和产品质量具有重要的影响作用. 基于分子-离子共存理论，建立CaO-SiO2-MgO-Al2O3四元渣系Al2O3活度预测模型;结合试验测定值对其进行验证与修正，最终建立了修正的CaO-SiO2-MgO-Al2O3四元渣系Al2O3活度预测模型;同时，依据模型计算结果探究R(w(CaO)/w(SiO2))，w(MgO)/w(Al2O3)和w(Al2O3)对Al2O3活度的影响. 研究结果表明:修正后的CaO-SiO2-MgO-Al2O3四元渣系Al2O3活度预测模型具有较高的预测精度，能够很好地预测熔渣Al2O3活度;当w(MgO)/w(Al2O3)=0.40，w(Al2O3)=20%时，随着R增加，Al2O3活度逐渐减小;当R=1.25，w(Al2O3)=20%时，随着w(MgO)/w(Al2O3)增加，Al2O3活度逐渐减小;当w(MgO)/w(Al2O3)=0.40，R=1.25时，随着w(Al2O3)增加，Al2O3活度逐渐增大.

关键词: 分子-离子共存理论;质量浓度;高炉渣;预测模型;Al2O3活度

Abstract: Since the activity of each component of the blast furnace slag has great effects on blast furnace smelting and product quality， a model was built to predict Al2O3 activity in CaO-SiO2-Al2O3-MgO quaternary slag system， based on the molecule and ion coexistence theory. After the prediction model was validated by the experimental results， the effects of the R(w(CaO)/w(SiO2))，w(MgO)/w(Al2O3) and w(Al2O3) on Al2O3 activity were explored. The results indicate that the model can predict the Al2O3 activity of molten slag accurately. When the w(Al2O3) was 20% and w(MgO)/w(Al2O3) was 0.40， the Al2O3 activity decreased with the increasing R. When the w(Al2O3) was 20% and R was 1.25， the Al2O3 activity decreased with the increasing w(MgO)/w(Al2O3). With the R=1.25 and w(MgO)/w(Al2O3) =0.40， the Al2O3 activity increased with the increasing w(Al2O3).

Key words: molecule and ion coexistence theory; mass concentration; blast furnace slag; prediction model; Al2O3 activity

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