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Coke and Chemistry

, Volume 60, Issue 12, pp 470–475 | Cite as

Influence of the Crushing of Bituminous Batch on Coke Quality

  • E. O. Shmeltser
  • V. P. Lyalyuk
  • V. P. Sokolova
  • D. V. Miroshnichenko
Coke
  • 16 Downloads

Abstract

Laboratory and industrial research confirms that decrease in the clinkering properties of bituminous coal when it is present to excess in the coking batch improves the strength of blast-furnace coke. If coal batch containing >70% bituminous coal is crushed until its content of the ≤3 mm class is 90%, the crushability Π25 may be increased by 1.8%, with decrease in the susceptibility to wear И10 by 0.8%. This behavior may be explained in that increase in the specific surface of the coal particles reduces the fluidity of the plastic mass and hence increases its viscosity. Consequently, the residence time of the gaseous products in the plastic zone increases. That results in the formation of a large quantity high-molecular gas, creating higher expansion pressure. The overall outcome is greater utilization of the destruction products as plasticizers; the formation of additional liquid from the gaseous products within the grains; and improvement in the contact conditions.

Keywords

coal batch bituminous coal crushing clinkering properties coke strength 

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References

  1. 1.
    Lyalyuk, V.P., Uchitel’, A.D., Lyakhova, I.A., Kassim, D.A., and Zaitsev, G.L, Preparation of coking batch, Coke Chem., 2011, vol. 54, no. 8, pp. 271–286.CrossRefGoogle Scholar
  2. 2.
    Lyalyuk, V.P., Sokolova, V.P., Lyakhova, I.A., and Kassim, D.A, Ensuring stable quality of blast-furnace coke, Coke Chem., 2012, vol. 55, no. 8, pp. 304–308.CrossRefGoogle Scholar
  3. 3.
    Shmeltser, E.O., Lyalyuk, V.P., and Sokolova, V.P., The effect of preparation of coal charges on the quality of metallurgical coke, Vestn. Priazovsk. Gos. Tekh. Univ., 2015, no. 30, pp. 27–36.Google Scholar
  4. 4.
    Lyalyuk, V.P., Shmeltser, E.O., Lyakhova, I.A., and Kassim, D.A., Changes in the petrographic composi-tion of coal batch on crushing, Coke Chem., 2017, vol. 60, no. 2, pp. 55–58.CrossRefGoogle Scholar
  5. 5.
    Romanyuk, I.V., Sikan, I.I., Mukina, N.V., et al., Prospective development of the coal resource base of the ArcelorMittal Krivoy Rog coke-chemical production, Uglekhim. Zh., 2016, nos. 3–4, pp. 12–18.Google Scholar
  6. 6.
    Lyalyuk, V.P., Sokolova, V.P., Lyakhova, I.A., and Kassim, D.A, Quality fluctuations of coking coal, Coke Chem., 2013, vol. 56, no. 1, pp. 1–6.CrossRefGoogle Scholar
  7. 7.
    Miroshnichenko, D.V., Influence of oxidation on the packing density of coal, Coke Chem., 2014, vol. 57, no. 5, pp. 183–191.CrossRefGoogle Scholar
  8. 8.
    Miroshnichenko, D.V., Crushing properties of coal, Coke Chem., 2013, vol. 56, no. 12, pp. 449–455.CrossRefGoogle Scholar
  9. 9.
    Desna, N.A. and Miroshnichenko, D.V., Oxidized coal in coking: a review, Coke Chem., 2011, vol. 54, no. 5, pp. 139–146.CrossRefGoogle Scholar
  10. 10.
    ISO 10329:2009: Coal—Determination of Plastic Properties— Constant-Torque Gieseler Plastometer Method, Geneva: Int. Org. Standard., 2009.Google Scholar
  11. 11.
    Taits, E.M., Enik, G.I., and Rizaev, V.V., The degree of crushing of high-sintering coal and coke strength, Koks Khim., 1987, no. 11, pp. 37–39.Google Scholar
  12. 12.
    Gofman, M.V., Prikladnaya khimiya tverdogo topliva (Applied Solid Fuel Chemistry), Moscow: Metallurgizdat, 1963.Google Scholar
  13. 13.
    Sklyar, M.G., Fiziko-khimicheskie osnovy spekaniya uglei (Physical and Chemical Basis of Coal Sintering), Moscow: Metallurgiya, 1984.Google Scholar
  14. 14.
    Gryaznov, N.S., Osnovy teorii koksovaniya (Fundamental Theory of Coking), Moscow: Metallurgiya, 1976.Google Scholar
  15. 15.
    Miroshnichenko, D.V., Kaftan, Y.S., Desna, N.A., and Sytnik, A.V., Oxidation of bituminous coal. 1. Expansion pressure, Coke Chem., 2015, vol. 58, no. 10, pp. 376–381.CrossRefGoogle Scholar
  16. 16.
    Miroshnichenko, D.V., Sostavlenie ugol’nykh shikht dlya koksovaniya (Composition of Coal Charge for Coking), Kiev: Tekhnika, 1965.Google Scholar

Copyright information

© Allerton Press, Inc. 2017

Authors and Affiliations

  • E. O. Shmeltser
    • 1
  • V. P. Lyalyuk
    • 1
  • V. P. Sokolova
    • 1
  • D. V. Miroshnichenko
    • 2
  1. 1.Krivoy Rog Metallurgical InstituteUkrainian National Metallurgical AcademyKrivoy RogUkraine
  2. 2.Kharkov Polytechnic InstituteKharkovUkraine

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