Characteristics of Nozzle Clogging and Evolution of Oxide Inclusion for Al-Killed Ti-Stabilized 18Cr Stainless Steel


Characteristics of nozzle clogging and evolution of oxide inclusion were studied by sampling the deposits of submerged entry nozzle (SEN) and the molten steel in tundish during Al-killed Ti-stabilized 18Cr stainless steelmaking process. The deposits found in the clogging of SEN were mainly composed of frozen steel and inclusions. The inclusions in the deposits and tundish were both mainly (MgO-Al2O3)rich-CaO-TiOx. The compositions of most inclusions were Liquid+Spinel or Liquid+TiSp phase. The (MgO-Al2O3)rich-CaO inclusions that were not effectively modified by calcium treatment could be a source of clogging. By combining both the experimental results and thermodynamic calculation, (MgO-Al2O3)rich-TiOx inclusions (TiSp inclusions) would be formed with the decreasing temperature in steel during continuous casting, which could be transported and accumulated on the inner wall of the SEN. Increasing the calcium content in the molten steel could decrease the formation of TiSp inclusions. During continuous casting, these inclusions accumulated on the inner wall of the SEN and gradually formed porous network of clog. Molten steel would gradually solidify in the porous space of the clog due to the increased residence time of the molten steel when flowing through it. The clogging gradually increased and caused the shutdown of continuous casting.

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  1. 1.

    S. Basu, S. K. Choudhary and N. U. Girase: ISIJ Int., 2004, vol. 44, pp. 1653-1660.

    CAS  Article  Google Scholar 

  2. 2.

    Y. Gao and K. Sorimachi: ISIJ Int., 1993, vol. 33, pp. 291-297.

    CAS  Article  Google Scholar 

  3. 3.

    H. Matsuura, C. Wang, G. Wen and S. Sridhar: ISIJ Int., 2007, vol. 47, pp. 1265-1274.

    CAS  Article  Google Scholar 

  4. 4.

    C. W. Seo, S. H. Kim, S. K. Jo, M. O. Suk and S. M. Byun: Metall. Mater. Trans. B, 2010, vol. 41, pp. 790-797.

    CAS  Article  Google Scholar 

  5. 5.

    K. Sasai and Y. Mizukami: ISIJ Int., 1994, vol. 34, pp. 802-809.

    CAS  Article  Google Scholar 

  6. 6.

    Y. Miki, H. Kitaoka, T. Sakuraya and T. Fujii: ISIJ Int., 1992, vol. 32, pp. 142-149.

    CAS  Article  Google Scholar 

  7. 7.

    L. Zhang and B. G. Thomas: Metall. Mater. Trans. B, 2006, vol. 37, pp. 733-761.

    CAS  Article  Google Scholar 

  8. 8.

    K. Sasai and Y. Mizukami: ISIJ Int., 1994, vol. 34, pp. 802-809.

    CAS  Article  Google Scholar 

  9. 9.

    G. Ye, P. Jönsson and T. Lund: ISIJ Int., 1996, vol. 36, pp. S105-S108.

    Article  Google Scholar 

  10. 10.

    H. Itoh, M. Hino and S. Ban-Ya: Metall. Mater. Trans. B, 1997, vol. 28, pp. 953-956.

    CAS  Article  Google Scholar 

  11. 11.

    J. H. Park, S. B. Lee and D. S. Kim: Metall. Mater. Trans. B, 2005, vol. 36, pp. 67-73.

    CAS  Article  Google Scholar 

  12. 12.

    S. Yang, Q. Wang, L. Zhang, J. Li and K. Peaslee: Metall. Mater. Trans. B, 2012, vol. 43, pp. 731-750.

    Article  Google Scholar 

  13. 13.

    N. Verma, P. C. Pistorius, R. J. Fruehan, M. S. Potter, H. G. Oltmann and E. B. Pretorius: Metall. Mater. Trans. B, 2012, vol. 43, pp. 830-840.

    Article  Google Scholar 

  14. 14.

    Y. Shin, I. Lee, D. Kim, S. Kim and K. Oh: Ironmak. Steelmak., 1988, vol. 15, pp. 143-149.

    Google Scholar 

  15. 15.

    Z. Deng, M. Zhu, Y. Zhou and D. Sichen: Metall. Mater. Trans. B, 2016, vol. 47, pp. 2015-2025.

    Article  Google Scholar 

  16. 16.

    P. Dorrer, S. K. Michelic, C. Bernhard, A. Penz and R. Rössler: Steel Res. Int., 2019, vol. 90, pp. 1-13.

    Article  Google Scholar 

  17. 17.

    C. H. Cui, Y. Bao, M. Wang and W. Wu: Int. J. Miner. Metall. Mater., 2010, vol. 17, pp. 154-161.

    CAS  Article  Google Scholar 

  18. 18.

    A. Karasangabo and C. Bernhard: J. Adhes. Sci. Technol., 2012, vol. 26, pp. 1141-1156.

    CAS  Google Scholar 

  19. 19.

    K. Mukai, L. Zhong and M. Zeze: ISIJ Int., 2006, vol. 46, pp. 1810-1816.

    CAS  Article  Google Scholar 

  20. 20.

    T. Suzuki and T. Koseki: Tetsu-to-Hagané, 2006, vol. 92, pp. 411-416.

    CAS  Article  Google Scholar 

  21. 21.

    D. Kruger and A. Garbers-Craig: Metall. Mater. Trans. B, 2017, vol. 48, pp. 1514-1532.

    Article  Google Scholar 

  22. 22.

    J. Li, G. Cheng, Q. Ruan, J. Pan and X. Chen: ISIJ Int., 2018, vol. 58, pp. 2280-2287.

    CAS  Article  Google Scholar 

  23. 23.

    J. Li, G. Cheng, Q. Ruan, J. Pan and X. Chen: Metall. Mater. Trans. B, 2018, vol. 49, pp. 2357-2369.

    Article  Google Scholar 

  24. 24.

    T. Zhang, C. Liu, H. Mu, Y. Li and M. Jiang: Ironmak. Steelmak., 2018, vol. 45, pp. 187-193.

    CAS  Article  Google Scholar 

  25. 25.

    S. Rodl, H. Schuster, S. Ekerot, G. Xia, N. Veneri, F. Ferro, S. Baragiola, P. Rossi, S. Fera, V. Colla et al.: New Strategies for Clogging Prevention for Improved Productivity and Steel Quality, 2008.

  26. 26.

    G. Duderstadt, R. Iyengar and J. Matesa: JOM, 1968, vol. 20, pp. 89-94.

    Article  Google Scholar 

  27. 27.

    Z. Deng and M. Zhu: Steel Res. Int., 2013, vol. 84, pp. 519-525.

    CAS  Article  Google Scholar 

  28. 28.

    I. H. Jung, S. A. Decterov and A. D. Pelton: Metall. Mater. Trans. B, 2004, vol. 35, pp. 493-507.

    CAS  Article  Google Scholar 

  29. 29.

    I. H. Jung, S. A. Decterov and A. D. Pelton: ISIJ Int., 2004, vol. 44, pp. 527-536.

    CAS  Article  Google Scholar 

  30. 30.

    C. Bale, E. Bélisle, P. Chartrand, S. Decterov, G. Eriksson, A. Gheribi, K. Hack, I. H. Jung, Y. B. Kang and J. Melançon: Calphad, 2016, vol. 54, pp. 35-53.

    CAS  Article  Google Scholar 

  31. 31.

    H. Barati, M. Wu, A. Kharicha, and A. Ludwig: in Solidification and Gravity VII, G.K.A. Roosz, Z. Veres, and M. Sveda, eds., Hungarian Academy of Sciences, Miskolc-Lillafured, 2018, pp. 144–49.

  32. 32.

    H. Barati, M. Wu, A. Kharicha and A. Ludwig: Powder Technol., 2018, vol. 329, pp. 181-198.

    CAS  Article  Google Scholar 

  33. 33.

    H. Barati, M. Wu, A. Kharicha and A. Ludwig: Metall. Mater. Trans. B, 2019, vol. 50, pp. 1428-1443.

    Article  Google Scholar 

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The authors gratefully express their appreciation to the National Natural Science Foundation of China (Grant No. 51374020), the State Key Laboratory of Advanced Metallurgy at the University of Science and Technology Beijing (USTB), and to Jiuquan Iron and Steel Co. for supporting this study.

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Correspondence to Jingyu Li.

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Manuscript submitted May 6, 2019.

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Li, J., Cheng, G., Ruan, Q. et al. Characteristics of Nozzle Clogging and Evolution of Oxide Inclusion for Al-Killed Ti-Stabilized 18Cr Stainless Steel. Metall Mater Trans B 50, 2769–2779 (2019).

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