1773 K 下 CaO-SiO2-MgO-Al2O3-B2O3 SLAG 系统的热力学性质

IF 0.6 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materiali in tehnologije Pub Date : 2023-12-11 DOI:10.17222/mit.2023.897

Xianmeng Wang, Yongchun Guo, Mengyao Li, Yanqiang Bu

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引用次数: 0

摘要

本研究以 Sn 为金属溶剂，CaF2-CaO 为参比渣，采用参比渣法测定了 T = 1773 K 时 CaO-SiO2-MgO-Al2O3-B2O3 高炉炉渣体系中 CaO 的活性。根据获得的实验结果，绘制了 1773 K 时 CaO-SiO2-MgO-20%Al2O3-2.2%B2O3 熔渣体系中 CaO 的等活度图。还讨论了 R（w(CaO)/w(SiO2)）和 w(MgO)/w(Al2O3)对 CaO 活性和活性系数的影响。结果表明，当 w(Al2O3) = 20 %、w(MgO)/w(Al2O3) = 0.50 和 w(B2O3) = 2.2 % 时，高炉渣中 CaO 的活度和活度系数随 R 的增大而增大。当 w(Al2O3) = 20 %、R = 1.30 和 w(B2O3) = 2.2 % 时，高炉渣中 CaO 的活度和活度系数随 w(MgO)/w(Al2O3) 的增加而增加。

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THERMODYNAMIC PROPERTIES OF CaO-SiO2-MgO-Al2O3-B2O3 SLAG SYSTEMS AT 1773 K

In this research, the activity of CaO in a CaO-SiO2-MgO-Al2O3-B2O3 blast furnace slag system at T = 1773 K was measured using the reference slag method with Sn as the metal solvent and CaF2-CaO as the reference slag. Based on the obtained experimental results, the iso-activity diagram of CaO in the CaO-SiO2-MgO-20%Al2O3-2.2%B2O3 slag system at 1773 K was drawn. The effects of R(w(CaO)/w(SiO2)) and w(MgO)/w(Al2O3) on the activities and activity coefficients of CaO were also discussed. The results show that when w(Al2O3) = 20 %, w(MgO)/w(Al2O3) = 0.50 and w(B2O3) = 2.2 %, the activities and activity coefficients of CaO in the blast furnace slag increase with an increase in R. When w(Al2O3) = 20 %, R = 1.30 and w(B2O3) = 2.2 %, the activities and activity coefficients of CaO in the blast furnace slag increase with an increase in w(MgO)/w(Al2O3).

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来源期刊

Materiali in tehnologije 工程技术-材料科学：综合

CiteScore

1.30

自引率

0.00%

发文量

审稿时长

4-8 weeks

期刊介绍： The journal MATERIALI IN TEHNOLOGIJE/MATERIALS AND TECHNOLOGY is a scientific journal, devoted to original papers and review scientific papers concerned with the areas of fundamental and applied science and technology. Topics of particular interest include metallic materials, inorganic materials, polymers, vacuum technique and lately nanomaterials.