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Study on the Effect of Iron-Based Deoxidizing Inhibitors for Coal Spontaneous Combustion Prevention

Author

Listed:
  • Chaoyu Hao

    (College of Safety Science and Engineering, Liaoning Technical University, Fuxin 123000, China)

  • Yanling Chen

    (College of Safety Science and Engineering, Liaoning Technical University, Fuxin 123000, China)

  • Jiren Wang

    (College of Safety Science and Engineering, Liaoning Technical University, Fuxin 123000, China)

  • Cunbao Deng

    (Security Engineering Technology Research Institute, Liaoning Technical University, Fuxin 123000, China)

  • Guang Xu

    (Department of Mining Engineering and Metallurgical Engineering, Western Australian School of Mines, Curtin University, Kalgoorlie 6430, Australia)

  • Fengwei Dai

    (Security Engineering Technology Research Institute, Liaoning Technical University, Fuxin 123000, China)

  • Rui Si

    (College of Science, Liaoning Technical University, Fuxin 123000, China)

  • Hongfei Wang

    (College of Mining, Liaoning Technical University, Fuxin 123000, China)

  • Haoyu Wang

    (College of Safety Science and Engineering, Liaoning Technical University, Fuxin 123000, China)

Abstract

To improve the prevention of spontaneous coal combustion, reduced iron powder and other ingredients should be added together to form an iron-based deoxidizing inhibitor, with the dual effect of oxygen consumption and inhibition. The oxygen consumption rate of the inhibitor was studied through experiments. According to the theory of coordination resistance, the coordination resistance of Fe 3+ was studied via the density functional method. Subsequently, a comparative experiment of the effects on spontaneous coal combustion was conducted. The research shows that several kinds of common resistance agents that are added to the reduced iron powder can consume oxygen. However, the rate of oxygen consumption varies. Fe 3+ produced by the reduced iron powder indicates a strong coordination resistance. When compared with traditional inhibitors of Mg 2+ , Fe 3+ has a stronger inhibition effect on the N, P, and S reactive groups in coal. The overall inhibitory effect is better than that of traditional inhibitors, because of the increased oxygen consumption and the coordination resistance of Fe 3+ on the basis of traditional inhibitors.

Suggested Citation

  • Chaoyu Hao & Yanling Chen & Jiren Wang & Cunbao Deng & Guang Xu & Fengwei Dai & Rui Si & Hongfei Wang & Haoyu Wang, 2018. "Study on the Effect of Iron-Based Deoxidizing Inhibitors for Coal Spontaneous Combustion Prevention," Energies, MDPI, vol. 11(4), pages 1-10, March.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:4:p:789-:d:138691
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    References listed on IDEAS

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    1. Xuyao Qi & Cunxiang Wei & Qizhong Li & Libin Zhang, 2016. "Controlled-release inhibitor for preventing the spontaneous combustion of coal," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 82(2), pages 891-901, June.
    2. Rongkun Pan & Zejun Xiao & Minggao Yu, 2017. "The Characteristics of Methane Combustion Suppression by Water Mist and Its Engineering Applications," Energies, MDPI, vol. 10(10), pages 1-14, October.
    3. Gang Wang & Yue Wang & Lulu Sun & Xiang Song & Qiqi Liu & Hao Xu & Wenzhou Du, 2018. "Study on the Low-Temperature Oxidation Law in the Co-Mining Face of Coal and Oil Shale in a Goaf—A Case Study in the Liangjia Coal Mine, China," Energies, MDPI, vol. 11(1), pages 1-16, January.
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    Cited by:

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