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首页> 外文期刊>ISIJ international >Modelling of Defluidization of ZrO_2/Fe Particles in High Temperature Gas Fluidization: Influence of Fe Contents
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Modelling of Defluidization of ZrO_2/Fe Particles in High Temperature Gas Fluidization: Influence of Fe Contents

机译:高温气体化ZrO_2 / Fe颗粒颗粒的涂抹模型:Fe含量的影响

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摘要

The contents of Fe on the surface of iron ore fines had a great influence on the fluidization behavior during high temperature fluidized bed reduction, which would cause defluidization when exceeding a critical value. In this paper, simplistically, ZrO_2/Fe particles with different Fe contents on the surface were used as raw materials. Through modification of previous models, a quantitative relationship was established to predict the defluidization temperature of ZrO_2/Fe particles with different Fe contents, and the calculation results corresponded well with the expe.rimental data obtained from the defluidization test. The model in this paper firstly explained the dependence of defluidization behavior on the contents of Fe in high temperature gas fluidization, and it could well predict the metallization degree of commercial iron ore fines when defluidization occurred during fluidized bed reduction. Therefore, the model could be used as a reference to select suitable operating conditions for treating fine iron oxide particles in high temperature gas fluidization processes, such as direction reduction and chemical looping.
机译:铁矿石表面上的Fe的含量对高温流化床减少期间的流化行为产生了很大影响,这将在超过临界值时引起渗透率。本文在简单地,表面上具有不同Fe含量的ZrO_2 / Fe颗粒用作原料。通过修改以前的模型,建立了定量关系以预测具有不同Fe含量的ZrO_2 / Fe颗粒的渗透温度,并且计算结果良好地与从过流化试验中获得的替代数据。本文的模型首先解释了渗透行为对高温气体化的Fe含量的依赖性,并且在流化床减少期间发生碎裂时,可以很好地预测商业铁矿石的金属化度。因此,该模型可以用作选择适当的操作条件,以在高温气体流化过程中处理细铁氧化物颗粒,例如方向减少和化学循环。

著录项

  • 来源
    《ISIJ international》 |2021年第7期|2034-2040|共7页
  • 作者单位

    State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization Ansteel Research Institute of Vanadium & Titanium (Iron & Steel) Panzhihua 61700 China;

    State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 China;

    State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 China;

    State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 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

    Fe contents; defluidization behavior; quantitative relationship; high temperature gas fluidization;

    机译:Fe内容;异样行为;量化关系;高温气体流化;

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