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Comprehensive evaluation of sintering basic characteristics of iron ore based on grey relational analysis

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Abstract

Sintering basic characteristics of fourteen iron ores were comprehensively evaluated using micro-sinter and grey relational analysis methods. The results show that magnetite has a low assimilability, high bonding phase strength, and high crystal strength. Hematite presents a good assimilability, while limonite exhibits a strong assimilability, but the bonding phase strength and crystal strength of these two kinds of iron ores are comparatively low. Great difference in liquid flowability exists for the same kind of iron ores. When the assimilation temperature of the sinter mixture is too high, limonite can be added; when the bonding phase strength or crystal strength of the sinter mixture is too low, magnetite can be added. The liquid fluidity of the sinter mixture can be adjusted according to the ratios of corresponding iron ores. Grey relational analysis is an effective method to evaluate the comprehensive sintering characteristics of iron ores, which can provide theoretical basis for the purchasing department of the steel enterprises.

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Authors and Affiliations

  1. School of Environment, Tsinghua University, Beijing, 100084, China

    Dong-hui Liu, Jun-hua Li & Yue Peng

  2. School of Metallurgy and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, China

    Jian-liang Zhang & Guang-wei Wang

  3. Beijing Shenwu Environment & Energy Technology Co., Ltd., Beijing, 102200, China

    Xun Xue

Authors
  1. Dong-hui Liu
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  2. Jun-hua Li
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  3. Yue Peng
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  4. Jian-liang Zhang
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  5. Guang-wei Wang
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  6. Xun Xue
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Correspondence to Dong-hui Liu.

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Liu, Dh., Li, Jh., Peng, Y. et al. Comprehensive evaluation of sintering basic characteristics of iron ore based on grey relational analysis. J. Iron Steel Res. Int. 26, 691–696 (2019). https://doi.org/10.1007/s42243-019-00259-1

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  • DOI: https://doi.org/10.1007/s42243-019-00259-1

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