Effect of Gangue Distribution on Compressive Strength of Iron Ore Granules

DOI Web Site 22 References Open Access
  • Kon Tatsuya
    Department of Materials Science and Engineering, Faculty of Engineering, Kyushu University
  • Sato Ginichiro
    Department of Materials Science and Engineering, Faculty of Engineering, Kyushu University
  • Ohno Ko-ichiro
    Department of Materials Science and Engineering, Faculty of Engineering, Kyushu University

Description

<p>In recent years, the gangue component in iron ore deposits has increased owing to the increasing scarcity of high-grade iron ore. Such high levels of gangue causes a loss in strength of the granules used in the sintering process and a decrease in operating efficiency. In this study, the granule strength is compared by applying two types of samples, namely commercial iron ore and the gangue-free iron ore prepared from reagents, to both nuclear ore and fine ore granules. The experimental results confirm that gangue components have little effect on the wet compressive strength. However, the dry compressive strength increases with the addition of gangue in the fine ore. Granules of gangue-free fine ore exhibit significantly lower compressive strength. These results are attributed to the difference in the Coulomb repulsion force caused by the zeta potential of the fine ore.</p>

Journal

  • ISIJ International

    ISIJ International 63 (10), 1619-1625, 2023-10-15

    The Iron and Steel Institute of Japan

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