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Transactions of the Indian Institute of Metals

, Volume 72, Issue 12, pp 3129–3137 | Cite as

Caking Ability Tests for Coal Blends in Process to Utilize the Indian Origin Coals

  • Saida ShaikEmail author
  • Sanchita Chakravarty
  • Priya Ranjan Mishra
  • Rina Sahu
  • K. Chakravarty
Technical Paper
  • 37 Downloads

Abstract

The idea of this paper is to properly utilize Indian low-rank coking coal (semi-coking coal) with the blending of high-rank imported coals and to reduce the overall cost of coke making. The blending of the coals has been done in two phases. Effect of blending mass ratio on the swelling index and plasticity parameters has been studied. The effect of maceral content, vitrinite reflectance, and volatile matter content on the caking ability of coals has been studied. Blended sample analysis shows that there is an abrupt drop in the fluidity of the samples compared to the original coals; there is no proper relation between the fluidity and swelling index of the coal blends. Phase 1 coal blends show better results compared to phase 2 samples. Crucible swelling number values for blend 1 and blend 3 from phase 1 are 6 and 4.5, respectively. To validate the swelling number, coke strength after reaction (CSR) and coke reactivity index (CRI) tests have been done for blend 1 and blend 3 coals from phase 1. CSR, CRI for blend 1 and blend 3 samples are 22.18, 71.30 and 23.79, 70.75, respectively.

Keywords

Coal blending Crucible swelling number (CSN) Coke strength after reaction (CSR) Coke reactivity index (CRI) and macerals 

Notes

Acknowledgements

The authors are thankful to the Director, CSIR-National Metallurgical Laboratory, Jamshedpur, and to the Head, Coal Characterization Division of the Laboratory for granting permission for conducting some of experiments.

References

  1. 1.
    Nasirudeen M B, and A Jauro, J Miner Mater Charact Eng10 (2011) 101.Google Scholar
  2. 2.
    Richard S, Fuel76 (1997) 615.CrossRefGoogle Scholar
  3. 3.
    Vankrevelen D, Dormans H N M, Huntjens F J, Fuel38 (1959) 165.Google Scholar
  4. 4.
    Gibson J, Yearbook of Coke Oven Managers (1972) 182–201.Google Scholar
  5. 5.
    Merrick D, Fuel62 (1983) 568.Google Scholar
  6. 6.
    Schapiro N, and Gray R J, Proc Illinois Min Inst68 (1960) 83.Google Scholar
  7. 7.
    Chaudhuri S G, Mukherjee A K, and Roychoudhury K K, in Proceedings of National Seminar on Coal for Blast Furnace Coke and for Injection, Jamshedpur (1990) 65–76.Google Scholar
  8. 8.
    Miura Y, The Coke Oven Managers’ Association (COMA) Year-Book, Mexborough (1978) 292–311.Google Scholar
  9. 9.
    Chiu Y F, Ironmak Steelmak9 (1982) 193.Google Scholar
  10. 10.
    Barsotti A, Damiani R, in 47th Ironmaking Conference (1988) 163.Google Scholar
  11. 11.
    Ishikawa Y, Kase M, Abe Y, Ono K, Sugata M, and Nishi T, Ironmaking Proc, Metall. Soc. AIME, United States (1983) Jan 1, 42.Google Scholar
  12. 12.
    Caldeira J G, Silva P H. in 47th Ironmaking Conference (1988) 357–360.Google Scholar
  13. 13.
    Morishita N, Tsukada K, Suzuki N, and Nemoto K I, Ironmak Proc45 (1986) 203.Google Scholar
  14. 14.
    Pusz S, and Buszko R, Int J Coal Geol90 (2012) 43.CrossRefGoogle Scholar
  15. 15.
    Tiwari H P, Banerjee P K, and Saxena V K, Fuel107 (2013) 615.CrossRefGoogle Scholar
  16. 16.
    Seki H, Ito O, and Iino M, Fuel68 (1989) 837.CrossRefGoogle Scholar
  17. 17.
    Gagarin S G, Coke Chem52 (2009) 473.CrossRefGoogle Scholar
  18. 18.
    Dıez M A, Alvarez R, and Barriocanal C, Int J Coal Geol50 (2019) 389.Google Scholar
  19. 19.
    Castro Díaz M, Zhao H, Kokonya S, Dufour A, and Snape C E, Energy Fuels26 (2012) 1769.CrossRefGoogle Scholar
  20. 20.
    Xing X, Rogers H, Zulli P, Hockings K, and Ostrovski O, Fuel237 (2019) 775.CrossRefGoogle Scholar
  21. 21.
    Suárez-Ruiz I, Flores D, Mendonça Filho J G, and Hackley P C, Int J Coal Geol98 (2012) 73.CrossRefGoogle Scholar
  22. 22.
    Suarez-Ruiz I, Flores D, Mendonça Filho J G, and Hackley P C, Int J Coal Geol99 (2012) 54.CrossRefGoogle Scholar

Copyright information

© The Indian Institute of Metals - IIM 2019

Authors and Affiliations

  1. 1.Metallurgical and Materials EngineeringNational Institute of Technology-JamshedpurJamshedpurIndia
  2. 2.ANC DepartmentNational Metallurgical Laboratory (NML)-JamshedpurBurmamines, JamshedpurIndia
  3. 3.TATA SteelJamshedpurIndia

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