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首页> 外文期刊>ISIJ international >Corrosion Behavior of Alumina Containing Refractory in Blast Furnace Hearth by CaO-SiO_2-MgO-Al_2O_3-Cr_2O_3 Slags
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Corrosion Behavior of Alumina Containing Refractory in Blast Furnace Hearth by CaO-SiO_2-MgO-Al_2O_3-Cr_2O_3 Slags

机译：CaO-SiO_2-MgO-Al_2O_3-Cr_2O_3渣对高炉炉膛含氧化铝耐火材料的腐蚀行为

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摘要

The corrosion behaviors of corundum brick and carbon composite brick used in blast furnace hearth by CaO-SiO_2-MgO-Al_2O_3-Cr_2O_3(-CaF_2) slags were studied in the present work. The degradation of the corundum brick in slag was a result of slag infiltration and brick dissolution, and the corrosion of the brick became more serious with the addition of CaF_2 due to the decrease of slag viscosity. The disintegration of carbon composite brick in CaF_2-containing slag was caused by the combination of slag penetration, brick dissolution and reaction between slag and brick. By comparing the corrosion behavior in CaF_2-containing slag between the corundum brick and carbon composite brick, the corrosion degree of the corundum brick was greater than that of the carbon composite brick. To the blast furnace operation in which a low grade iron ore such as laterite ore and CaF_2 containing slag (about 2 wt%) are used, it was found that the carbon composite brick with better slag corrosion resistance can be selected as a hearth refractory so as to improve the operation performance and ensure the longer campaign life of blast furnace.
机译：研究了CaO-SiO_2-MgO-Al_2O_3-Cr_2O_3（-CaF_2）渣对高炉炉膛用刚玉砖和碳复合砖的腐蚀行为。炉渣中刚玉砖的降解是炉渣渗入和炉渣溶解的结果，由于炉渣粘度的降低，加入CaF_2会使砖的腐蚀更加严重。碳复合砖在含CaF_2的炉渣中的崩解是由炉渣渗透，砖的溶解以及炉渣与砖之间的反应共同引起的。通过比较刚玉砖和碳复合砖在含CaF_2的炉渣中的腐蚀行为，发现刚玉砖的腐蚀程度大于碳复合砖的腐蚀程度。对于使用低品位铁矿石（例如红土矿和含CaF_2的炉渣（约2 wt％））的高炉操作，发现可以选择具有更好的炉渣耐腐蚀性的碳复合砖作为炉膛耐火材料，因此以提高操作性能，确保高炉的使用寿命更长。

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  • 来源
    《ISIJ international》 |2019年第11期|1933-1939|共7页
  • 作者

    Renze XU; Jianliang ZHANG; Zushu LI; Yongan ZHAO;

  • 作者单位

    School of Metallurgical and Ecological Engineering University of Science and Technology Beijing Beijing 100083 China;

    School of Metallurgical and Ecological Engineering University of Science and Technology Beijing Beijing 100083 China School of Chemical Engineering The University of Queensland St Lucia OLD 4072 Australia;

    State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing Beijing 100083 China WMG The University of Warwick Coventry CV4 7AL UK.;

    Henan Winna Industrial Group Co. Ltd. Gongyi 451250 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

    corundum brick; carbon composite brick; slag; corrosion; CaF_2;

    机译：刚玉砖碳复合砖矿渣;腐蚀;CaF_2;

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