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首页> 外文期刊>ISIJ international >Carbothermic Reduction Behavior of FeS in the Presence of CaO during Microwave Irradiation
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Carbothermic Reduction Behavior of FeS in the Presence of CaO during Microwave Irradiation

机译：CaO存在下微波辐射中FeS的碳热还原行为

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摘要

Carbothermic reduction of FeS in the presence of CaO was experimentally studied by employing a multi-mode microwave generator at 1 050 W and 2.45 GHz as an external heat source to mitigate CO_2 and SO_2 emissions. According to XRD analysis, an ion exchange reaction between FeS and CaO was initiated at temperatures lower than 645℃ and progressed by a further heating to 850℃ without any evidence for the onset of a reduction reaction. Detection of Fe phase in the XRD pattern of sample heated to 920℃ and existence of CO/CO_2 in the off-gas during microwave treatment demonstrated that the reduction reaction initiates at ca. 850℃. It was found that the onset of reduction reaction promotes the ion exchange reaction by FeO consumption via reduction to Fe. Moreover, optical microscope and SEM-EDX observations showed that carbon can be absorbed by metallic iron to make molten iron particles at 1 290℃.
机译：通过使用1050 W和2.45 GHz的多模微波发生器作为外部热源来减轻CO_2和SO_2的排放，实验研究了CaO存在下FeS的热还原反应。根据XRD分析，FeS和CaO之间的离子交换反应是在低于645℃的温度下引发的，并通过进一步加热至850℃进行，没有任何还原反应开始的迹象。在加热至920℃的样品的XRD图谱中检测到Fe相，并在微波处理过程中发现了废气中CO / CO_2的存在，表明还原反应始于约200℃。 850℃。发现还原反应的开始通过FeO的消耗经由还原为Fe而促进了离子交换反应。此外，光学显微镜和SEM-EDX观察表明，碳可以被金属铁吸收，从而在1 290℃下生成铁水颗粒。

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  • 来源
    《ISIJ international》 |2019年第4期|672-678|共7页
  • 作者

    Ahmadreza AMINI; Takayuki MAEDA; Ko-ichiro OHNO; Kazuya KUNITOMO;

  • 作者单位

    Department of Materials Process Engineering, Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-Ku, Fukuoka, Japan;

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

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

    Department of Materials Science and Engineering, Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-Ku, Fukuoka, 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

    carbothermic reduction; desulfurization; microwave heating; FeS; lime;

    机译：碳热还原;脱硫微波加热;FeS;酸橙;

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