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首页> 外文期刊>ISIJ international >Viscosity Property and Melt Structure of CaO-MgO-SiO_2-Al_2O_3-FeO Slag System
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Viscosity Property and Melt Structure of CaO-MgO-SiO_2-Al_2O_3-FeO Slag System

机译：CaO-MgO-SiO_2-Al_2O_3-FeO矿渣体系的粘度特性和熔体结构

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摘要

For the purpose to describe the change of the viscosity properties of the converter slag during smelting reduction process using aluminum ash as reductant and provide basis for technology development, the viscosity of CaO-MgO-SiO_2-Al_2O_3-FeO slag system at a fixed basicity of 3 was measured with the various ratio of A/(A+F) (w(Al_2O_3)/W(Al_2O_3+FeO)) by the cylinder method, and the structural of the melt was analyzed based on the FTIR and Raman spectroscopy to further explain the evolution behavior of viscosity. The results showed that viscosity of the slag was increased with increasing the ratio of A/(A+F). When this ratio increased from 0.17 to 0.5, the simple network units of the molten slag were polymerized into more complex network structure, resulting in a slow increase in viscosity from 0.65 dPa·s to 0.91 dPa·s at 1 873 K. With further increasing this ratio to 1.0, the main structure was converted from silicate structure to aluminate structure. In addition, the polymerization degrees of aluminate units and silicate units both increased, which eventually led to an rapid increase in the viscosity from 0.91 dPa-s to 1.94 dPa·s.
机译：为描述以铝灰为还原剂的冶炼还原过程中转炉渣的粘度特性变化，并为技术开发提供依据，CaO-MgO-SiO_2-Al_2O_3-FeO渣体系在固定碱度下的粘度为通过圆筒法以各种比率的A /（A + F）（w（Al_2O_3）/ W（Al_2O_3 + FeO））测量图3，并基于FTIR和拉曼光谱对熔体的结构进行了进一步分析。解释粘度的演变行为。结果表明，随着A /（A + F）比的增加，渣的粘度增加。当此比率从0.17增大到0.5时，熔融炉渣的简单网络单元聚合成更复杂的网络结构，导致粘度在1 873 K时从0.65 dPa·s缓慢增加到0.91 dPa·s。如果该比例为1.0，则主结构从硅酸盐结构转变为铝酸盐结构。另外，铝酸盐单元和硅酸盐单元的聚合度均增加，最终导致粘度从0.91dPa·s迅速增加至1.94dPa·s。

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  • 来源
    《ISIJ international》 |2019年第1期|9-15|共7页
  • 作者

    Xiang SHEN; Min CHEN; Nan WANG; Dong WANG;

  • 作者单位

    School of Metallurgy, Northeastern University, 3-11 Wen-Hua Road, Shenyang, 110819 China;

    School of Metallurgy, Northeastern University, 3-11 Wen-Hua Road, Shenyang, 110819 China;

    School of Metallurgy, Northeastern University, 3-11 Wen-Hua Road, Shenyang, 110819 China;

    School of Metallurgy, Northeastern University, 3-11 Wen-Hua Road, Shenyang, 110819 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

    quinary slag system; smelting reduction; viscosity; structure; polymerization degree;

    机译：五渣系统冶炼还原;粘度结构体;聚合度;

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