Journal of Iron and Steel Research International

, Volume 22, Issue 12, pp 1078–1084 | Cite as

Estimation of Energy Consumption in COREX Process Using a Modified Rist Operating Diagram

  • Wen-long ZhanEmail author
  • Keng Wu
  • Zhi-jun He
  • Qi-hang Liu
  • Xiao-juan Wu
Metallurgy and Metal Working


Fuel consumption in the COREX-3000 process run in Baosteel is currently higher than the design index. Therefore, mass and heat balance equations for the COREX process were established using the basic principles included in the Rist operating diagram for blast furnace (BF) as a reference. Thermodynamic calculations were then used to modify the Rist operating diagram so that it was suitable for the COREX process. The modified Rist operating diagram was then applied for the evaluation of metallization rate (MR) and fuel structure to reduce the energy consumption in the COREX process. The modified Rist operating diagram for the shaft furnace (SF) provided a nearly ideal value for the restriction point W when the metallization rate was increased, while the point P on the operating line for the melter gasifier (MG) moved upward due to reduction in the heat required in hearth. The feasibility of reducing the energy consumption during the COREX process by changing the fuel structure was also demonstrated.

Key words

modified Rist operating diagram metallization rate fuel structure energy consumption COREX process 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    P. Prachethan Kumar, D. Gupta, T. K. Naha, S. S. Gupta, Ironmak. Steelmak. 33 (2006) 293–298.CrossRefGoogle Scholar
  2. 2.
    L. H. Han, Z. G. Luo, X. L. Zhou, H. Zhou, Z. S. Zou, Y. Z. Zhang, J. Iron Steel Res. Int. 20 (2013) No. 3, 30–35.CrossRefGoogle Scholar
  3. 3.
    H. F. Li, Z. G. Luo, Z. S. Zou, J. J. Sun, L. H. Han, Z. X. Di, J. Iron Steel Res. Int. 19 (2012) No. 9, 36–42.CrossRefGoogle Scholar
  4. 4.
    S. C. Barman, K. P. Mrunmaya, M. Ranjan, J. Iron Steel Res. Int. 18 (2011) No. 5, 20–24.CrossRefGoogle Scholar
  5. 5.
    S. R. Na, Calculations in Ironmaking Practice, Metallurgical Industry Press, Beijing, 2010.Google Scholar
  6. 6.
    J. G. Peacey, W. G. Davenport, The Iron Blast Furnace: Theory and Practice, Pergamon Press, Oxford, 1979.Google Scholar
  7. 7.
    Y. Ono, Tetsu-to-Hagané 79 (1993) 711–715.CrossRefGoogle Scholar
  8. 8.
    W. H. Kim, D. J. Min, Sci. China Tech. Sci. 54 (2011) 1655–1660.CrossRefGoogle Scholar
  9. 9.
    Z. G. Luo, X. L. Zhou, L. H. Han, A. B. Yu, J. Northeast. Univ. Nat. Sci. 32 (2011) 1261–1264.Google Scholar
  10. 10.
    P. Prachethan Kumar, S. C. Barman, B. M. Reddy, V. R. Sekhar, Ironmak. Steelmak. 36 (2009) 87–90.CrossRefGoogle Scholar
  11. 11.
    Q. Li, D. L. Liu, L. J. Zhang, Z. S. Zou, J. Northeast. Univ. Nat. Sci. 33 (2013) 542–545.Google Scholar
  12. 12.
    R. L. Du, K. Wu, W. L. Zhan, J. J. Qu, X. H. Wu, M. Wang, The Chinese Journal of Process Engineering 13 (2013) 94–98.Google Scholar
  13. 13.
    S. C. Lee, M. K. Shin, S. Joo, J. K. Yoon, ISIJ Int. 39 (1999) 319–328.CrossRefGoogle Scholar
  14. 14.
    W. G. Li, Baosteel Technology (2008) No. 6, 11–18.Google Scholar
  15. 15.
    W. L. Zhan, K. Wu, P. Fu, J. J. Qu, C. M. Wang, Q. H. Liu, T. F. Shao, J. Univ. Sci. Technol. Beijing 35 (2013) 448–453.Google Scholar
  16. 16.
    B. Srivastava, S. K. Roy, P. K. Sen, Metall. Mater. Trans. B 41 (2010) 935–939.CrossRefGoogle Scholar
  17. 17.
    W. G. Song, Ironmaking 30 (2011) No. 5, 60–62.Google Scholar
  18. 18.
    K. Wu, Q. H. Liu, W. L. Zhan, Y. She, T. F. Shao, J. J. Qu, Journal of Chemical Engineering of Chinese Universities 38 (2014) 738–741.Google Scholar
  19. 19.
    H. C. Xu, Y. H. Qi, Iron and Steel 42 (2007) No. 4, 16–20.Google Scholar
  20. 20.
    H. F. Xu, L. Guo, Z. H. Zhang, J. M. Zhu, Baosteel Technology (2011) No. 6, 44–47.Google Scholar

Copyright information

© China Iron and Steel Research Institute Group 2015

Authors and Affiliations

  • Wen-long Zhan
    • 1
    • 2
    Email author
  • Keng Wu
    • 2
  • Zhi-jun He
    • 1
  • Qi-hang Liu
    • 2
  • Xiao-juan Wu
    • 1
  1. 1.School of Materials and MetallurgyUniversity of Science and Technology LiaoningAnshan, LiaoningChina
  2. 2.State Key Laboratory of Advanced MetallurgyUniversity of Science and Technology BeijingBeijingChina

Personalised recommendations