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Stamp-Charged Coke-Making Technology—The Effect of Charge Density and the Addition of Semi-Soft Coals on the Structural, Textural and Quality Parameters of Coke

Author

Listed:
  • Michał Rejdak

    (Department of Cokemaking Technologies, Institute for Chemical Processing of Coal, 1 Zamkowa Street, 41-803 Zabrze, Poland)

  • Andrzej Strugała

    (Faculty of Energy and Fuels, AGH University of Science and Technology, Mickiewicza 30 av., 30-059 Krakow, Poland)

  • Aleksander Sobolewski

    (Department of Cokemaking Technologies, Institute for Chemical Processing of Coal, 1 Zamkowa Street, 41-803 Zabrze, Poland)

Abstract

Coke is an integral component of the blast furnace charge; therefore, it plays an important role in the integrated steelmaking process. Achieving the required coke quality parameters by producers requires the use of a high proportion of the highest quality coking coals (hard coking coals) in the coking blends, which significantly increases the unit production costs. Approximately 75% of these costs are constituted by the cost of the coal blend’s preparation. There is a deficit in the best quality coking coals on the world market and their supply are characterized by large fluctuations in quality parameters. Therefore, from the point of view of the economics of coke production, it is advantageous to produce high-quality coke from a coke blend with the highest possible content of cheaper coals. The paper presents the results of the influence of coal charge bulk density and semi-soft coking coal content in the coking blend on the textural and structural parameters of coke, which determine its quality. Research has shown that the application of increased density influences the parameters of the texture and structure of the coke, which shape its quality parameters. The use of stamp-charging technology contributes to the improvement of the coke quality or enables the production of coke of a predetermined quality from blends containing cheaper semi-soft coals.

Suggested Citation

  • Michał Rejdak & Andrzej Strugała & Aleksander Sobolewski, 2021. "Stamp-Charged Coke-Making Technology—The Effect of Charge Density and the Addition of Semi-Soft Coals on the Structural, Textural and Quality Parameters of Coke," Energies, MDPI, vol. 14(12), pages 1-31, June.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:12:p:3401-:d:571716
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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. Marek Sciazko & Bartosz Mertas & Ludwik Kosyrczyk & Aleksander Sobolewski, 2020. "A Predictive Model for Coal Coking Based on Product Yield and Energy Balance," Energies, MDPI, vol. 13(18), pages 1-16, September.
    3. Ludwik Kosyrczyk & Slawomir Stelmach & Krzysztof Gaska & Agnieszka Generowicz & Natalia Iwaszczuk & Dariusz Kardaś, 2021. "Optimization of Thermal Parameters of the Coke Oven Battery by Modified Methodology of Temperature Measurement in Heating Flues as the Management Tool in the Cokemaking Industry," Energies, MDPI, vol. 14(4), pages 1-13, February.
    4. Lembke B., 1918. "√ a. p," Journal of Economics and Statistics (Jahrbuecher fuer Nationaloekonomie und Statistik), De Gruyter, vol. 111(1), pages 709-712, February.
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    1. Michał Rejdak & Grzegorz Gałko & Marcin Sajdak & Aleksandra Wieczorek, 2022. "Stamp-Charged Coke-Making Technology—An Empirical Model for Prediction of Coal Charge Density for Stamp Charging Coke Oven Batteries," Energies, MDPI, vol. 15(24), pages 1-15, December.

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