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Oxygen transfer phenomenon between slag and molten steel for production of IF steel

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Abstract

FeO-containing slag originated from the basic oxygen furnace to the ladle is a major reoxidation source during the following secondary refining. Ladle slag reduction treatment (slag treatment) is one of the common countermeasures adopted to eliminate the steel contamination by FeO reoxidation. The oxygen transfer phenomenon between molten steel and slag was studied during the industrial production of interstitial-free (IF) steel, the measured and calculated oxygen activities in steel were compared, and the Fe–O equilibrium at the slag–molten steel interface was investigated by thermodynamic analysis. With slag treatment, the oxygen potential is higher in the molten steel than in the pre-deoxidation slag; this causes oxygen transfer from the molten steel to the slag, decreasing the efficiency of slag treatment. Based on this, a two-step slag deoxidation process was optimized. The second step further reduced the FeO content. On the other hand, the CaO/Al2O3 (C/A) ratio in the refining slag must be controlled, because it affects the FeO activity and inclusion absorption capacity of the slag. The results suggest that the C/A ratio of 1.2–1.5 and the FeO content of < 6% are beneficial to refine IF steel.

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References

  1. X.X. Deng, C.X. Ji, W.L. Dong, L.P. Li, X. Yin, Y.D. Yang, A. McLean, Ironmak. Steelmak. 45 (2018) 592-602.

    Article  Google Scholar 

  2. X.X. Deng, C.X. Ji, Y. Cui, Z.H. Tian, X. Yin, X.J. Shao, Y.D. Yang, A. McLean, Ironmak. Steelmak. 44 (2017) 739-749.

    Article  Google Scholar 

  3. C. Bonilla, in: 78th Steelmaking Conference Proceedings, Iron and Steel Society of AIME, Warrendale, PA, USA, 1995, pp. 743–752.

  4. G. Domizzi, G. Anteri, J. Ovejero-García, Corros. Sci. 43 (2001) 325–339.

    Article  Google Scholar 

  5. H. Yasunaka, R. Yamanaka, T. Inoue, T. Saito, Tetsu-to-Hagane 81 (1995) 529–534.

    Article  Google Scholar 

  6. K.G. Rackers, B. Thomas, in: 78th Steelmaking Conference Proceedings, Iron and Steel Society of AIME, Warrendale, PA, USA, 1995, pp. 723–734.

  7. S. Basu, S.K. Choudhary, N.U. Girase, ISIJ Int. 44 (2004) 1653–1660.

    Article  Google Scholar 

  8. Y. Sahai, Metall. Mater. Trans. B 47 (2016) 2095–2106.

    Article  Google Scholar 

  9. L. Zhang, B. Thomas, X. Wang, in: 85th Steelmaking Conference Proceedings, Iron and Steel Society of AIME, Warrendale, PA, USA, 2002, pp. 431–452.

  10. H. Ohta, H. Suito, Metall. Mater. Trans. B 29 (1998) 119–129.

    Article  Google Scholar 

  11. K.K. Lee, J.M. Park, J.Y. Chung, S.H. Choi, S.B. Ahn, Rev. Met. Paris 93 (1996) 503-509.

    Article  Google Scholar 

  12. M. Wang, Y.P. Bao, H. Cui, W.S. Wu, H.J. Wu, J. Univ. Sci. Technol. Beijing 32 (2010) 432-437.

    Google Scholar 

  13. K.Y. Lee, J.M. Park, C.W. Park, in: VII International Conference on Molten Slags Fluxes and Salts, The South African Institute of Mining and Metallurgy, Stockholm, Sweden, 2004, pp. 601–606.

  14. Y. Qin, X. Wang, F. Huang, B. Chen, C. Ji, Metall. Res. Technol. 112 (2015) 405.

    Article  Google Scholar 

  15. L. Zhang, J. Zhi, F. Mei, L. Zhu, X. Jiang, J. Shen, J. Cui, K. Cai, B.G. Thomas, Ironmak. Steelmak. 33 (2006) 129-139.

    Article  Google Scholar 

  16. Japan Society for the Promotion of Science (JSPS), Steelmaking data sourcebook, Revised ed., Gordon and Breach Science Publishers, New York, USA, 1988.

  17. H. Itoh, M. Hino, S. Ban-Ya, Metall. Mater. Trans. B 28 (1997) 953–956.

    Article  Google Scholar 

  18. J.D. Seo, S.H. Kim, K.R. Lee, Steel Res. Int. 69 (1998) 49–53.

    Article  Google Scholar 

  19. R.J. Fruehan, Metall. Trans. 1 (1970) 2083–2088.

    Article  Google Scholar 

  20. C. Liu, M. Yagi, X. Gao, S.J. Kim, F. Huang, S. Ueda, S.Y. Kitamura, Metall. Mater. Trans. B 49 (2018) 113-122.

    Article  Google Scholar 

  21. Y. Qin, X. Wang, L. Li, F. Huang, Steel Res. Int. 86 (2015) 1037–1045.

    Article  Google Scholar 

  22. V. Espejo, M. Iwase, Metall. Mater. Trans. B 26 (1995) 257-264.

    Article  Google Scholar 

  23. Y. Ji, C. Liu, Y. Lu, H. Yu, F. Huang, X. Wang, Metall. Mater. Trans. B 49 (2018) 3127-3136.

    Article  Google Scholar 

  24. M. Valdez, G.S. Shannon, S. Sridhar, ISIJ Int. 46 (2006) 450–457.

    Article  Google Scholar 

Download references

Acknowledgements

The authors are grateful for financial support from the National Natural Science Foundation of China under Grant No. 51404020 and the National Key R&D Program of China under Grant Nos. 2017YFB0304000 and 2017YFB0304001.

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Authors and Affiliations

  1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, China

    Yun-qing Ji, Hui-xiang Yu & Xin-hua Wang

  2. Steelmaking Plant, Beijing Shougang Co., Ltd., Qian’an, 100041, Hebei, China

    Chun-yang Liu & Fu-xiang Huang

  3. Research Institute of Technology, Shougang Group Co., Ltd., Beijing, 100043, China

    Xiao-xuan Deng & Xin-hua Wang

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  1. Yun-qing Ji
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  2. Chun-yang Liu
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  3. Hui-xiang Yu
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  4. Xiao-xuan Deng
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  5. Fu-xiang Huang
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  6. Xin-hua Wang
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Correspondence to Hui-xiang Yu.

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Ji, Yq., Liu, Cy., Yu, Hx. et al. Oxygen transfer phenomenon between slag and molten steel for production of IF steel. J. Iron Steel Res. Int. 27, 402–408 (2020). https://doi.org/10.1007/s42243-019-00285-z

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