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Investigation into the Effect of Multi-Component Coal Blends on Properties of Metallurgical Coke via Petrographic Analysis under Industrial Conditions

Author

Listed:
  • Lina Kieush

    (Energy Systems and Energy Management Chair, National Metallurgical Academy of Ukraine, 49600 Dnipro, Ukraine
    Ferrous Metallurgy Chair, Montanuniversität Leoben, 8700 Leoben, Austria)

  • Andrii Koveria

    (Department of Chemistry, Dnipro University of Technology, 49005 Dnipro, Ukraine)

  • Johannes Schenk

    (Ferrous Metallurgy Chair, Montanuniversität Leoben, 8700 Leoben, Austria)

  • Kanay Rysbekov

    (Mining and Metallurgical Institute Named after O.A. Baikonurov, Satbayev University, Almaty 50013, Kazakhstan)

  • Vasyl Lozynskyi

    (Department of Mining Engineering and Education, Dnipro University of Technology, 49005 Dnipro, Ukraine)

  • Heng Zheng

    (Ferrous Metallurgy Chair, Montanuniversität Leoben, 8700 Leoben, Austria)

  • Azamat Matayev

    (Department of Development of Mineral Deposits, Non-Profit Joint-Stock Company, Abylkas Sagimov Karaganda Technical University, Karaganda 100012, Kazakhstan)

Abstract

The coalification rank of the coal blend components and their caking properties initially impact the coke’s quality. In part, the quality of coke depends on the technological parameters of the coke production technology, such as the method of blend preparation, the coking condition, the design features of the coke ovens, and the technique used for post-oven treatment. Therefore, to improve the coke quality, the main attention is paid to the quality of the coal blend. The petrographic analysis is the simplest and most reliable way to control coal quality indicators under industrial conditions. In this paper, the effect of nine industrial blends on coke quality using petrographic analysis has been studied. Additionally, this paper addresses the efficient use of coals and the preparation of coal mixtures under industrial conditions, which contributes to the sustainability of cokemaking. For the preparation of blends, 17 coals were used, for which, in addition to petrographic and proximate analyzes, the maximum thickness of the plastic layer was determined. Industrially produced cokes were analyzed for coke reactivity index (CRI), coke strength after reaction with CO 2 (CSR), and Micum indices (M 25 and M 10 ). It has been established that the petrographic properties of coal blends are reliable parameters for assessing the quality of coke under conditions of an unstable raw material base, multi-component blends, and changes in coking regimes. Moreover, the research results have shown that to ensure the rational use of coals in the preparation of coal blends to achieve the required coke quality and consequently the sustainability of cokemaking, it is necessary to consider not only the mean reflectance of vitrinite but the proximate and caking properties of coals.

Suggested Citation

  • Lina Kieush & Andrii Koveria & Johannes Schenk & Kanay Rysbekov & Vasyl Lozynskyi & Heng Zheng & Azamat Matayev, 2022. "Investigation into the Effect of Multi-Component Coal Blends on Properties of Metallurgical Coke via Petrographic Analysis under Industrial Conditions," Sustainability, MDPI, vol. 14(16), pages 1-21, August.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:16:p:9947-:d:885899
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    References listed on IDEAS

    as
    1. Michał Rejdak & Rafał Bigda & Małgorzata Wojtaszek, 2020. "Use of Alternative Raw Materials in Coke-Making: New Insights in the Use of Lignites for Blast Furnace Coke Production," Energies, MDPI, vol. 13(11), pages 1-16, June.
    2. Yingjin Wang & Dameng Liu & Yidong Cai & Xiawei Li, 2019. "Variation of Petrophysical Properties and Adsorption Capacity in Different Rank Coals: An Experimental Study of Coals from the Junggar, Ordos and Qinshui Basins in China," Energies, MDPI, vol. 12(6), pages 1-19, March.
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    Cited by:

    1. Lina Kieush & Johannes Schenk, 2023. "Investigation of the Impact of Biochar Application on Foaming Slags with Varied Compositions in Electric Arc Furnace-Based Steel Production," Energies, MDPI, vol. 16(17), pages 1-29, August.

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