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›› 2011, Vol. 11 ›› Issue (4): 695-700.

• 材料工程专栏 • 上一篇    下一篇

低氟CaF2-CaO-Al2O3-MgO-SiO2系精炼渣的性能

史冠勇 张廷安 牛丽萍 豆志河   

  1. 东北大学材料与冶金学院 东北大学材料与冶金学院 东北大学材料与冶金学院 东北大学 材料与冶金学院
  • 收稿日期:2011-07-27 修回日期:1900-01-01 出版日期:2011-08-20 发布日期:2011-08-20
  • 通讯作者: 张廷安

Research on Properties of Low Fluorine CaF2-CaO-Al2O3-MgO-SiO2 Refining Slag

SHI Guan-yong ZHANG Ting-an NIU Li-ping DOU Zhi-he   

  1. School of Materials and Metallurgy, Northeastern University School of Materials & Metallurgy，Northeastern University Shenyang School of Materials & Metallurgy，Northeastern University Shenyang Key Laboratory for Ecological Utilization of Multimetallic Mineral (Ministry of Education), Northeastern University
  • Received:2011-07-27 Revised:1900-01-01 Online:2011-08-20 Published:2011-08-20
  • Contact: ZHANG Ting-an

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被引次数

38

摘要： 设计了精炼铜-铬合金用低氟CaF2-CaO-Al2O3-MgO-SiO2五元渣系，并研究了其粘度、密度、表面张力及熔化温度等性能. 结果表明，该渣系的熔化温度在1336~1402℃之间；高温下该渣系的密度和表面张力均随温度升高而减小，且随CaF2含量和MgO含量增加逐渐降低；增加CaF2添加量可降低渣系粘度；CaF2含量较低时，MgO含量增加也可降低渣系粘度，CaF2含量较高时，渣粘度在MgO含量为6%时最小，MgO含量续增加到9%时粘度反而上升. 该渣系粘度较低，表面张力较小，具有良好的精炼效果.

关键词: 铜-铬合金, 电渣重熔, 熔渣, 粘度, 密度, 表面张力

Abstract: Low fluorine CaF2-CaO-Al2O3-MgO-SiO2 slag system was used as refining slag for preparation of Cu-Cr alloy. Its viscosity, density, surface tension and melting temperature were studied. The results indicated that the melting temperature of the slag was between 1336~1402℃. The density and surface tension of CaF2-CaO-Al2O3-MgO-SiO2 slag decreased with increasing of temperature, adding of CaF2 and MgO could decrease its density and surface tension. Its viscosity decreased with increasing of MgO and CaF2 content, and achieved the minimum value when MgO content was 6%, and increased when MgO content up to 9% with 10% and 15% CaF2 content. The slag had lower surface tension and better fluidity, so the refining efficiency with it was very good.

Key words: Cu-Cr alloy, electroslag remelting, slag, viscosity, density, surface tension

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