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首页> 外文期刊>ISIJ international >Combustion Rate of Coke in Quasi-particle at Iron Ore Sintering Process
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Combustion Rate of Coke in Quasi-particle at Iron Ore Sintering Process

机译：铁矿石烧结过程中准颗粒中焦炭的燃烧速率

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摘要

Temperature distribution in layer of the iron ore sintering process is one of the most important factors to decide the sinter quality. To estimate the temperature distribution in sinter layer needs knowledge of coke combustion rate. The purpose of this study is to clarify that coke combustion rate in the fine layer of the quasi-particle with considerations about void ratio and liquid formation. The following results were obtained. Interface chemical reaction rate constant, k_c, was independent on the mixing ratio of coke. The higher mixing ratio of coke made the larger effective diffusion coefficient of oxygen, because the higher mixing ratio of coke made the higher void ratio in the sample after coke combustion. The coke combustion rate became small with increasing of liquid formation amount, because liquid phase in quasi-particle prevented oxygen diffusion in there.
机译：铁矿石烧结过程中层内的温度分布是决定烧结质量的最重要因素之一。要估算烧结层中的温度分布，需要了解焦炭燃烧速率。这项研究的目的是在考虑空隙率和液体形成的情况下，阐明准颗粒细层中的焦炭燃烧速率。获得了以下结果。界面化学反应速率常数k_c与焦炭的混合比无关。焦炭的混合比例越高，氧的有效扩散系数越大，这是因为焦炭的混合比例越高，焦炭燃烧后样品中的空隙率越高。焦炭燃烧率随着液体形成量的增加而变小，这是因为准颗粒中的液相阻止了氧在其中的扩散。

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  • 来源
    《ISIJ international》 |2013年第9期|1588-1593|共6页
  • 作者

    Ko-ichiro OHNO; Keigo NODA; Koki NISHIOKA; Takayuki MAEDA; Masakata SHIMIZU;

  • 作者单位

    Department of Materials Science and Engineering, Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395 Japan;

    Formerly Graduated student, Department of Materials Process Engineering, Graduate School of Engineering, Kyushu University, Nippon Steel & Sumitomo Metal Corporation, 1 Kimitsu, Kimitsu City, Chiba, 299-1141 Japan;

    Formerly Department of Materials Science and Engineering, Faculty of Engineering, Kyushu University, Nippon Steel & Sumitomo Metal Corporation, 16-1 Sunayama, Kamisu, Ibaraki, 314-0255 Japan;

    Department of Materials Science and Engineering, Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395 Japan;

    Department of Materials Science and Engineering, Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395 Japan;

  • 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

    coke combustion rate; iron ore sintering process; quasi-particle; void ratio; liquid formation;

    机译：焦炭燃烧率铁矿石烧结工艺;准粒子空隙率液体形成;

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