Advertisement

Coke and Chemistry

, Volume 60, Issue 3, pp 102–107 | Cite as

Determining the strength of coke under crushing forces

  • E. I. Toryanik
  • A. V. Gryzlov
  • A. A. Zhuravsky
  • S. S. Kubrak
Coke
  • 31 Downloads

Abstract

Despite the many characteristics of coal relating to its use as blast-furnace fuel, few characteristics have been proposed to predict the productivity of the furnace and its coke consumption. Drum tests of coke permit ample assessment of its ability to withstand mechanical loads (in particular, abrasive and impact forces). At the same time, models of coke failure in the blast furnace indicate that the crushing forces on the coke play an important role. Thanks to those forces, the mean piece size of the coke declines as it falls though the furnace. The method used to determine the coke’s ability to withstand abrasive and impact forces has been codified in GOST State Standards (in terms of the strength indices M 25, M 40, and M 10). However, there is no standard method for assessing the ability of the coke to withstand crushing forces. To address that deficiency, a compact system for determination of the coke’s ability to withstand crushing forces is proposed: it consists of a press for the creation of compressive forces; a matrix with a punch in which the coke sample may be placed; and an instrument for measuring the compressive force (the crushing force). Values of the compressive strength determined using the new system are presented for various coke samples.

Keywords

coke mechanical strength impact loads crushing compressive strength 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Ukhmylova, G.S., The requirements of European blast furnace workers to the quality of coke, Koks Khim., 2001, no. 4, pp. 24–26.Google Scholar
  2. 2.
    Ukhmylova, G.S., Problems of production of highquality coke for blast furnaces, Chern. Metall., 2004, suppl., p.40.Google Scholar
  3. 3.
    Vegman, E.F., Domennoe proizvodstvo: spravochnik (Blast Furnace Production: Handbook), Moscow: Metallurgiya, 1989, vol.1.Google Scholar
  4. 4.
    Ivanov, E.B. and Muchnik, D.A., Tekhnologiya proizvodstva koksa (Coke Production Technology), Kiev: Vishcha Shkola, 1976.Google Scholar
  5. 5.
    Muchnik, D.A, Formirovanie svoistv domennogo koksa (Formation of the Properties of Blast-Furnace Coke), Moscow: Metallurgiya, 1983.Google Scholar
  6. 6.
    Muchnik, D.A. and Gulyaev, V.M., Identification of coke quality estimates by various methods of “cold” destruction, Koks Khim., 2006, no. 1, pp. 17–21.Google Scholar
  7. 7.
    Sklyar, M.G. and Dang, V.H., Complex evaluation of coke properties as the blast furnace fuel, Koks Khim., 1990, no. 6, pp. 48–51.Google Scholar
  8. 8.
    Semisalov, L.P., Sytenko, I.V., Kuznichenko, V.M., et al., Transformation of coke properties in the blast furnace processes, Nauch. Tr. Ukr. Gos. Nauchno-Issled. Uglekhim. Inst., 1971, no. 23, pp. 25–28.Google Scholar
  9. 9.
    Semisalov, L.P., Analysis of coke properties and change during blast furnace processing, Cand. Sci. (Tech.) Dissertation, Kharkov, 1980.Google Scholar
  10. 10.
    Toryanik, E.I., Gaidaenko, A.S., Podlubnyi, A.V., Tkalich, G.M., and Vovk, R.A., Coke sorting at PAO Zaporozhkoks, Coke Chem., 2016, vol. 59, no. 1, pp. 14–22.CrossRefGoogle Scholar
  11. 11.
    Zhuravskii, A.A., Complex evaluation of coke strength affected by crushing loads at the high temperatures, Cand. Sci. (Tech.) Dissertation, Kharkov, 2005.Google Scholar
  12. 12.
    Gaidaenko, A.S., Podlubnyi, A.V., Vovk, R.A., Toryanik, E.I., Zhuravskii, A.A., and Kubrak, S.S., UA Patent 104178, Byull. Izobret., 2016, no. 1.Google Scholar

Copyright information

© Allerton Press, Inc. 2017

Authors and Affiliations

  • E. I. Toryanik
    • 1
  • A. V. Gryzlov
    • 1
  • A. A. Zhuravsky
    • 1
  • S. S. Kubrak
    • 1
  1. 1.Ukrainian Institute of Coal and Coal ChemistryKharkovUkraine

Personalised recommendations