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CaO-SiO2-FeO-Al2O3-Na2O-TiO2-P2O5渣系的脱磷热力学模型

孙嘉丽 刘承军 姜茂发

孙嘉丽, 刘承军, 姜茂发. CaO-SiO2-FeO-Al2O3-Na2O-TiO2-P2O5渣系的脱磷热力学模型[J]. 钢铁钒钛, 2021, 42(2): 146-151, 178. doi: 10.7513/j.issn.1004-7638.2021.02.024
引用本文: 孙嘉丽, 刘承军, 姜茂发. CaO-SiO2-FeO-Al2O3-Na2O-TiO2-P2O5渣系的脱磷热力学模型[J]. 钢铁钒钛, 2021, 42(2): 146-151, 178. doi: 10.7513/j.issn.1004-7638.2021.02.024
Sun Jiali, Liu Chengjun, Jiang Maofa. Thermodynamic model for dephosphorization of CaO-SiO2-FeO-Al2O3-Na2O-TiO2-P2O5 slag[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(2): 146-151, 178. doi: 10.7513/j.issn.1004-7638.2021.02.024
Citation: Sun Jiali, Liu Chengjun, Jiang Maofa. Thermodynamic model for dephosphorization of CaO-SiO2-FeO-Al2O3-Na2O-TiO2-P2O5 slag[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(2): 146-151, 178. doi: 10.7513/j.issn.1004-7638.2021.02.024

CaO-SiO2-FeO-Al2O3-Na2O-TiO2-P2O5渣系的脱磷热力学模型

doi: 10.7513/j.issn.1004-7638.2021.02.024
基金项目: 国家重点研发计划(2017YFC0805100);国家自然科学基金(51874082);国家自然科学基金辽宁联合基金(U1908224)
详细信息
    作者简介:

    孙嘉丽(1994—),女,博士生,主要从事铁水精炼的理论和工艺研究工作,E-mail:sunjl16@163.com

    通讯作者:

    刘承军(1974—),男,博士,教授,E-mail: liucj@smm.neu.edu.cn

  • 中图分类号: TF713.3,X756

Thermodynamic model for dephosphorization of CaO-SiO2-FeO-Al2O3-Na2O-TiO2-P2O5 slag

  • 摘要: 基于分子离子共存理论(IMCT)建立了CaO-SiO2-FeO-Al2O3-Na2O-TiO2-P2O5渣系的磷分配比预测模型,并讨论了组分变化对磷分配比的影响以及各碱性组元对磷分配比的贡献。结果表明,该模型计算的磷分配比与实测值吻合度较好;随着w(CaO)增加,磷分配比先增加后趋于平缓,其中30%是较合适的CaO含量;随着w(Na2O)增加,磷分配比逐渐增加,且Na2O比CaO脱磷作用更强;随着w(FeO)增加,磷分配比总体呈上升趋势;随着w(Al2O3)、w(SiO2)和w(TiO2)的增加,磷分配比均呈下降趋势,且相较于Al2O3,SiO2对渣系脱磷能力的不利影响更明显;熔渣中碱性组元CaO和Na2O对渣系的脱磷能力贡献最大。
  • 图  1  磷分配比计算值和实测值的比较

    Figure  1.  Comparison between calculated and measured phosphorus distribution ratio

    图  2  w(CaO)对LP的影响

    Figure  2.  Effect of CaO content on LP

    图  3  w(Na2O)对LP的影响

    Figure  3.  Effect of Na2O content on LP

    图  4  w(FeO)对LP的影响

    Figure  4.  Effect of FeO content on LP

    图  5  w(Al2O3)对LP的影响

    Figure  5.  Effect of Al2O3 content on LP

    图  6  w(SiO2)对LP的影响

    Figure  6.  Effect of SiO2 content on LP

    图  7  w(TiO2)对LP的影响

    Figure  7.  Effect of TiO2 content on LP

    图  8  渣中碱性组元和P2O5LP的贡献

    Figure  8.  Contributions of basic components and P2O5 in the slag to LP

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出版历程
  • 收稿日期:  2020-12-22
  • 刊出日期:  2021-04-10

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