Journal of Failure Analysis and Prevention

, Volume 19, Issue 6, pp 1691–1697 | Cite as

Failure Analysis of Blowpipe in Blast Furnaces: A Case Study

  • P. Falak
  • I. EbrahimzadehEmail author
  • M. Jamneshan
Technical Article---Peer-Reviewed


Blast furnaces are one of the most common and economical ways to produce pig iron and steel. One of the most important pieces of a blast furnace is the blowpipe which transmits preheated air to the blast furnace. In this investigation, a failure of a blowpipe was performed. XRD and EDS analyses were used for phase and elemental analyses. The fractography and microstructure of the samples were examined by optical and scanning electron microscopy. The results showed that chromium carbide segregation caused embrittlement and fracture at grain boundaries.


Blast furnaces Blowpipe Failure engine Case study Chromium carbide 



  1. 1.
    L. Liu, Z. Jiang, X. Zhang, Y. Lu, J. He, J. Wang, X. Zhang, Effects of top gas recycling on in-furnace status, productivity, and energy consumption of oxygen blast furnace. Energy 163, 144–150 (2018)CrossRefGoogle Scholar
  2. 2.
    Z. Zhou, Q. Xue, C. Li, G. Wang, X. She, J. Wang, Coal flow and combustion characteristics under oxygen enrichment way of oxygen-coal double lance. Appl. Therm. Eng. 123, 1096–1105 (2017)CrossRefGoogle Scholar
  3. 3.
    S.-W. Du, C.-P. Yeh, W.-H. Chen, C.-H. Tsai, J.A. Lucas, Burning characteristics of pulverized coal within blast furnace raceway at various injection operations and ways of oxygen enrichment. Fuel 143, 98–106 (2015)CrossRefGoogle Scholar
  4. 4.
    J. Liao, A.B. Yu, Y. Shen, Modelling the injection of upgraded brown coals in an ironmaking blast furnace. Powder Technol. 314, 550–556 (2017)CrossRefGoogle Scholar
  5. 5.
    S.-F. Zhang, C.-G. Bai, L.-Y. Wen, G.-B. Qiu, X.-W. Lü, Gas-particle flow and combustion characteristics of pulverized coal injection in blast furnace raceway. J. Iron. Steel Res. Int. 17(10), 8–12 (2010)CrossRefGoogle Scholar
  6. 6.
    C.-P. Yeh, S.-W. Du, C.-H. Tsai, R.-J. Yang, Numerical analysis of flow and combustion behavior in tuyere and raceway of blast furnace fueled with pulverized coal and recycled top gas. Energy 42(1), 233–240 (2012)CrossRefGoogle Scholar
  7. 7.
    Y.S. Shen, B.Y. Guo, A.B. Yu, P.R. Austin, P. Zulli, Three-dimensional modelling of in-furnace coal/coke combustion in a blast furnace. Fuel 90(2), 728–738 (2011)CrossRefGoogle Scholar
  8. 8.
    Y.S. Shen, D. Maldonado, B.Y. Guo, A.B. Yu, P. Austin, P. Zulli, Computational fluid dynamics study of pulverized coal combustion in blast furnace raceway. Ind. Eng. Chem. Res. 48(23), 10314–10323 (2009)CrossRefGoogle Scholar
  9. 9.
    C.-W. Chen, Numerical analysis for the multi-phase flow of pulverized coal injection inside blast furnace tuyere. Appl. Math. Model. 29(9), 871–884 (2005)CrossRefGoogle Scholar
  10. 10.
    S.-W. Du, W.-H. Chen, Numerical prediction and practical improvement of pulverized coal combustion in blast furnace. Int. Commun. Heat Mass Transf. 33(3), 327–334 (2006)CrossRefGoogle Scholar
  11. 11.
    S.-W. Du, W.-H. Chen, J. Lucas, Performances of pulverized coal injection in blowpipe and tuyere at various operational conditions. Energy Convers. Manag. 48(7), 2069–2076 (2007)CrossRefGoogle Scholar
  12. 12.
    M.F. McGuire, Stainless Steels for Design Engineers (ASM International, Cleveland, 2008)Google Scholar
  13. 13.
    G.E. Totten, Steel Heat Treatment Metallurgy and Technologies (Taylor & Francis Group, LLC, Boca Raton, 2006)Google Scholar
  14. 14.
    K. Shibanuma, F. Yanagimoto, T. Namegawa, K. Suzuki, S. Aihara, Brittle crack propagation/arrest behavior in steel plate—Part I: model formulation. Eng. Fract. Mech. 162, 324–340 (2016)CrossRefGoogle Scholar
  15. 15.
    K. Shibanuma, F. Yanagimoto, T. Namegawa, K. Suzuki, S. Aihara, Brittle crack propagation/arrest behavior in steel plate—Part II: experiments and model validation. Eng. Fract. Mech. 162, 341–360 (2016)CrossRefGoogle Scholar
  16. 16.
    R.W. Hertzberg, R.P. Vinci, J.L. Hertzberg, Deformation and Fracture Mechanics of Engineering Materials (Wiley, New York, 1976)Google Scholar
  17. 17.
    P. Michaud, D. Delagnes, P. Lamesle, M.H. Mathon, C. Levaillant, The effect of the addition of alloying elements on carbide precipitation and mechanical properties in 5% chromium martensitic steels. Acta Mater. 55(14), 4877–4889 (2007)CrossRefGoogle Scholar
  18. 18.
    P. Saravanan, G. Sahoo, S. Srikanth, K. Ravi, Failure analysis of radiant tube burners in continuous annealing line (CAL) of an integrated steel plant. J. Fail. Anal. Prev. 11(3), 286–292 (2011)CrossRefGoogle Scholar
  19. 19.
    N. Srisuwan, K. Eidhed, N. Kreatsereekul, T. Yingsamphanchareon, A. Kaewvilai, The study of heat treatment effects on chromium carbide precipitation of 35Cr–45Ni–Nb alloy for repairing furnace tubes. Metals 6(1), 26 (2016)CrossRefGoogle Scholar

Copyright information

© ASM International 2019

Authors and Affiliations

  1. 1.Advanced Materials Research CenterIslamic Azad University, Najafabad BranchNajafabadIran
  2. 2.Isfahan Steel CompanyIsfahanIran

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