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Influence of Oxygen Supply in an Iron Ore Sintering Process

机译：铁矿石烧结过程中供氧的影响

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摘要

The current issues of sintering technology in the iron and steel making industry are how to increase productivity of sintering process and to maintain proper quality of sintered ore. In the conventional sintering bed, combustion of solid fuel supplies heat required for sintering while it generates imbalance of heat concentration in the bed. The unevenly distributed heat is considered to be problematic on the quality aspect of sintered ore. Therefore, in order to maximize the production rate and quality of the products, an investigation for improved operational mode is indispensable. In this study, the effect of additional oxygen supply with an adjustment of injection location is discussed. Scale downed pot tests in addition to computation by previously developed unsteady 1-dimensional sintering bed model are employed for the examination. Also, quantitative parameters are applied to evaluate the changes of sintering process and the combustion characteristics are systemically analyzed among designed cases. The reactivity of coke combustion tends to increase with the enrichment of oxygen in the induced air. However, the degree of change in the sintering time as well as effective heat supply varies according to the locations of oxygen injection.
机译：钢铁工业中烧结技术的当前问题是如何提高烧结工艺的生产率并保持烧结矿的适当质量。在传统的烧结床中，固体燃料的燃烧提供了烧结所需的热量，同时它在床中产生了热量集中的不平衡。在烧结矿的质量方面，热量分布不均是有问题的。因此，为了使产品的生产率和质量最大化，对改进操作模式的研究是必不可少的。在这项研究中，讨论了通过调整注射位置来增加氧气供应的效果。除通过先前开发的非稳态一维烧结床模型进行计算外，还按比例缩小了罐的测试。此外，定量参数被应用于评估烧结过程的变化，并在设计案例中系统地分析了燃烧特性。焦炭燃烧的反应性趋于随着所吸入空气中氧气的富集而增加。然而，烧结时间的变化程度以及有效的热供应根据注氧的位置而变化。

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  • 来源
    《ISIJ international》 |2011年第7期|p.1065-1071|共7页
  • 作者

    Heejin KANG; Sangmin CHOI; Won YANG; Byungkook CHO;

  • 作者单位

    Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Guseong-dong, Yuseong-gu, Daejeon, 305-701 S. Korea;

    Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Guseong-dong, Yuseong-gu, Daejeon, 305-701 S. Korea;

    Korea Institute of Industrial Technology, Hongchen-ri, Ipjang- myeon, Cheonan, Chungnam, 330-852 S. Korea;

    Tech. Res. Lab, Ironmaking Research Group, POSCO, Goedong-dong, Nam-gu, Pohang, Gyeongbuk, 790-785 S. Korea;

  • 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

    iron ore sintering bed; oxygen enrichment; coke combustion;

    机译：铁矿石烧结床;富氧焦炭燃烧;

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