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首页> 外文期刊>ISIJ international >Improvement of Permeability of Sintering Bed by Adding Dry Particles to Granulated Raw Materials
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Improvement of Permeability of Sintering Bed by Adding Dry Particles to Granulated Raw Materials

机译：通过在颗粒状原料中添加干颗粒来提高烧结床的渗透性

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摘要

In order to increase the permeability of the sintering bed for sinter ore productivity, RF-MEBIOS (Return Fine - Mosaic Embedding Iron Ore Sintering) process, in which return fine as dry particle is added to granulated raw materials and then they are charged into a sintering machine, is proposed. In this paper, the pot suction tests and the direct shear tests were carried out to confirm the reason of increasing permeability of the sintering bed by addition of dry particle. As a result, it is proven that the increasing of permeability is caused by two major phenomena. One is by increasing the pseudo-particle size at granulation and the other is by decreasing the bulk density of the sintering bed after charging. The former is achieved by higher moisture content in the raw materials at granulation. The latter is achieved by higher friction in the packed bed composed of dry and wet particle compounds. Therefore, the voids are easy to remain in the sintering bed when the materials are charged into the sinter machine. The influence of the dry particle brand on permeability is not so strong, but larger dry particles make the permeability higher. Also, when the wet particles are added after granulation, the permeability decreased at the same moisture content condition of the packed bed.
机译：为了提高烧结床的渗透性以提高烧结矿的生产率，RF-MEBIOS（返回细粉-镶嵌式铁矿石烧结）工艺将干颗粒的细粉添加到颗粒状原料中，然后将其装入建议的烧结机。在本文中，进行了罐吸试验和直接剪切试验，以确认通过添加干颗粒而增加烧结床渗透性的原因。结果，证明了渗透率的增加是由两个主要现象引起的。一种是通过增加造粒时的伪颗粒尺寸，另一种是通过降低装料后烧结床的堆积密度。前者是通过制粒时原料中较高的水分含量来实现的。后者是通过在由干颗粒和湿颗粒化合物组成的填充床中更高的摩擦力来实现的。因此，当将材料装入烧结机中时，空隙易于保留在烧结床上。干颗粒品牌对渗透率的影响不是很大，但是较大的干颗粒会使渗透率更高。另外，当造粒后添加湿颗粒时，在填充床的相同含水量条件下，渗透性降低。

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  • 来源
    《ISIJ international》 |2013年第9期|1538-1544|共7页
  • 作者

    Yasuhide YAMAGUCHI; Chikashi KAMIJO; Masaru MATSUMURA; Takazo KAWAGUCHI;

  • 作者单位

    Technical Research & Development Bureau, Nippon Steel and Sumitomo Metals Corporation, 16-1 Sunayama, Kamisu, Ibaraki, 314-0255 Japan;

    Technical Research & Development Bureau, Nippon Steel and Sumitomo Metals Corporation, 20-1 Shintomi, Futtsu, Chiba, 293-8511 Japan;

    Technical Research & Development Bureau, Nippon Steel and Sumitomo Metals Corporation, 20-1 Shintomi, Futtsu, Chiba, 293-8511 Japan;

    Technical Research & Development Bureau, Nippon Steel and Sumitomo Metals Corporation, 16-1 Sunayama, Kamisu, Ibaraki, 314-0255 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

    iron ore; sintering; granulation; permeability of packed bed; return fine; RF-MEBIOS; bulk density;

    机译：铁矿;烧结;造粒填充床的渗透性罚款RF-MEBIOS;堆积密度;

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