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首页> 外文期刊>ISIJ international >Development of the Molten Slag Reduction Process -2 Optimization of Slag Reduction Process with Molten Slag Charging
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Development of the Molten Slag Reduction Process -2 Optimization of Slag Reduction Process with Molten Slag Charging

机译：熔渣还原工艺的发展--2熔渣装料优化熔渣还原工艺

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摘要

To recover valuable elements such as Fe or P from steelmaking slag and to modify the slag composition, a molten slag reduction process (IBX process: Iron Bath for X) has been developed. So far, pilot and commercial scale test operations have been carried out and it has been clarified that closed-type DC arc furnaces are desirable for the slag reduction process with hot slag charging. In the present work, issues and solutions of the actual operation are discussed. One issue is the optimization of the material feeding method. A hollow electrode, top lance, and injection pipe method were tested in the same furnace and the performance of each was investigated. The second issue is slag boiling and solidification at hot slag charging. To establish stable operation, use of a bottom block to avoid the formation of an emulsion at slag charging and off-gas combustion for heating the slag were proposed and tested. Finally, thermal aspects were discussed and the required energy consumption was estimated to show the effect of hot slag charging. Through these studies, it was confirmed that stable operation of slag reduction with hot slag charging can be attained in closed-type DC arc furnace, representing a great step for realizing of complete utilization process of BOF slag.
机译：为了从炼钢炉渣中回收有价值的元素，例如铁或磷，并改变炉渣成分，开发了熔融炉渣还原工艺（IBX工艺：X的铁浴）。迄今为止，已经进行了中试和商业规模的测试操作，并且已经阐明，对于带热炉渣的炉渣还原工艺而言，闭式直流电弧炉是理想的。在本工作中，讨论了实际操作的问题和解决方案。问题之一是进料方式的优化。在同一炉中测试了空心电极，顶部喷枪和注入管方法，并研究了每种方法的性能。第二个问题是炉渣在热炉渣中沸腾和凝固。为了建立稳定的操作，提出并测试了使用底部块料以避免在炉渣装料时形成乳化液以及用于燃烧炉渣的废气燃烧。最后，讨论了热学方面，并估算了所需的能量消耗，以显示热炉渣装料的效果。通过这些研究，证实了在闭式直流电弧炉中可以实现带热炉渣装料的稳定的炉渣还原操作，这是实现BOF炉渣完整利用过程的重要一步。

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  • 来源
    《ISIJ international》 |2018年第10期|1943-1952|共10页
  • 作者

  • 作者单位

    Process Research Laboratories Nippon Steel & Sumitomo Metal Corp. 16-1 Sunayama Kamisu 314-0255 Japan;

    Plant Eng. & Facility Management Center Nippon Steel & Sumitomo Metal Corp. 20-1 Shintomi Futtsu 293-8511 Japan;

    Advanced Technology Research Laboratories Nippon Steel & Sumitomo Metal Corp. Now at Nippon Steel & Sumikin Tech-nology Co. Ltd 20-1 Shintomi Futtsu 293-8511 Japan;

    NS Plant Designing Corp. 46-59 Nakabaru Tobata-ku Kitakyushu-City 804-0002 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

    BOF slag; reduction; arc furnace; molten slag; slag foaming; heat balance;

    机译：转炉渣;减少;电弧炉熔渣炉渣起泡;热平衡;

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