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首页> 外文期刊>ISIJ international >Effect of Steel-refractory Reactions on Removal of Arsenic from Molten Steel with Lanthanum Additions
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Effect of Steel-refractory Reactions on Removal of Arsenic from Molten Steel with Lanthanum Additions

机译：用镧添加钢 - 耐火反应对钢水除去砷的影响

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摘要

To formulate strategies to remove arsenic from molten steel by adding rare earth elements (REs), the evolution of inclusions in steel with different lanthanum additions was studied, and the effect of reactions between lanthanum and magnesium crucibles on the removal of arsenic was discussed. The results show that the addition of lanthanum can remove arsenic from molten steel, but steel-refractory reactions dramatically influenced the removal effect. The arsenic removal was determined by the generation of La-S-As. The reactions between lanthanum and magnesia crucibles partly consumed lanthanum and decreased its effective concentration acting on arsenic. Further, the reaction product dissolved magnesium consumed a part of sulfur that was disadvantageous for the formation of La-S-As. Besides, a sequence of reactions existed after the addition of lanthanum. The original Si-Mn-Al-O inclusions were changed to lanthanum-containing oxides first and then to MgO-rich oxides. The reaction to generate La-S-As mainly took place within 5 min. The consumption of REs by crucible refractories is an important issue that needs consideration. Alumina crucibles are more favored over magnesia crucibles when using REs to remove arsenic from molten steel.
机译：为了通过添加稀土元素（RES）来制定从钢水从钢​​水中除去砷的策略，研究了钢中夹杂物的进化，讨论了镧和镁坩埚之间的反应对砷的反应的影响。结果表明，加入镧可以从钢水中除去砷，但钢 - 耐火反应显着影响了去除效果。通过产生La-S-as的砷去除。镧和氧化镁之间的反应坩埚部分消耗的镧，降低了其在砷的有效浓度作用。此外，反应产物溶解的镁消耗了一部分硫，对于形成La-S-as的形成是不利的。此外，添加镧之后存在一系列反应。原始的Si-Mn-Al-O夹杂物首先将含镧氧化物变为富含镧的氧化物。产生La-S的反应主要发生在5分钟内。坩埚耐火材料的res的消耗是需要考虑的重要问题。使用RES从钢水中除去砷时，氧化铝坩埚更受氧化镁坩埚。

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  • 来源
    《ISIJ international》 |2020年第11期|2316-2324|共9页
  • 作者

    Hongpo WANG; Silu JIANG; Peng YU; Lifeng SUN; Yu WANG;

  • 作者单位

    College of Materials Science and Engineering Chongqing University Chongqing 400044 China;

    College of Materials Science and Engineering Chongqing University Chongqing 400044 China;

    College of Materials Science and Engineering Chongqing University Chongqing 400044 China;

    Key Laboratory for Ecological Metallurgy of Multimetallic Mineral (Ministry of Education) Northeastern University Shenyang 110819 China;

    College of Materials Science and Engineering Chongqing University Chongqing 400044 China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    rare earth; inclusion; arsenic; refractory; evolution;

    机译：稀土;纳入;砷;耐火;进化;

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