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Effects of Minor Elements to the Liquidus Temperatures of Blast Furnace Slags

机译:微量元素对高炉渣液相线温度的影响

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摘要

The effects of minor elements TiO_2, MnO, Na_2O, K_2O, CaS, and B_2O_3 to the liquidus temperatures of blast furnace slags were experimentally studied. The base blast furnace slag composition in SiO_2-Al_2O_3-CaO-MgO system is fixed at CaO/SiO_2=1.1, 16 wt% Al_2O_3 and 8 wt% MgO. The liquidus temperatures of the synthetic slags have been determined by high temperature equilibration, quenching and Electron Probe X-ray Microanalysis (EPMA) techniques. It was found that within the present investigated composition ranges, the additions of minor elements to the BF slags remain in melilite primary phase field. The minor element decrease the liquidus temperatures of the blast furnace slags in different extents and follows the tendency: B_2O_3 > CaS > Na_2O > K_2O > "TiO_2" > MnO. The present measurements were also compared with FactSage predictions.
机译:实验研究了微量元素TiO_2,MnO,Na_2O,K_2O,CaS和B_2O_3对高炉渣液相线温度的影响。 SiO_2-Al_2O_3-CaO-MgO系统中的高炉矿渣成分固定为CaO / SiO_2 = 1.1、16 wt%Al_2O_3和8 wt%MgO。合成炉渣的液相线温度已通过高温平衡,淬火和电子探针X射线微分析(EPMA)技术确定。发现在当前研究的组成范围内,向高炉渣中添加微量元素仍保留在莫来石初生相场中。微量元素在不同程度上降低了高炉矿渣的液相线温度,并具有以下趋势:B_2O_3> CaS> Na_2O> K_2O>“ TiO_2”> MnO。还将当前的测量结果与FactSage预测进行了比较。

著录项

  • 来源
    《ISIJ international》 |2016年第12期|2156-2160|共5页
  • 作者单位

    School of Chemical Engineering, The University of Queensland, Brisbane, 4072 Australia;

    Shougang Research Institute of Technology, Shougang Group, Beijing, 100000 China;

    Shougang Research Institute of Technology, Shougang Group, Beijing, 100000 China;

    Rio Tinto Iron Ore, Sydney, 2000 Australia;

    School of Chemical Engineering, The University of Queensland, Brisbane, 4072 Australia;

  • 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

    liquidus temperature; minor elements; BF slags; FactSage prediction;

    机译:液相线温度次要元素;高炉渣事实预测;

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