Abstract
The effects of oxidizing slag on oxygen mass transfer and inclusions in different stages of IF (interstitial-free) steel refining were investigated by several heat simulation experiments. The results of the experiments showed that the oxidizability of slag changed considerably during different refining stages. Kee** the content of FeO in the slag within 1 wt.% would narrow the difference of slag oxidizability, stabilize the content of [Al]s in the steel, avoid secondary oxidation of molten steel by the slag, and reduce the inclusions. When the mass transfer of FeO in the slag phase was a limiting step, the secondary oxidation reaction occurred at the steel–slag interface; when the diffusion of oxygen in the molten steel was a limiting step, the secondary oxidation reaction took place inside the molten steel. The oxygen transfer rate was affected by the mass transfer coefficient of oxygen. For every 0.0001 m/s increase in mass transfer coefficient, the oxygen transfer rate increased by about 2.2 × 10−6 min−1. By changing the mass transfer coefficient, the oxygen transfer rate of the slag to the molten steel can be controlled.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
B. Yan, B.H. Jiao, D.H. Zhang, J. Iron Steel Res. Int. 23 (2016) 160–165.
W. Liu, H.Y. Tang, S.F. Yang, M.H. Wang, J.S. Li, Q. Liu, J.H. Liu, Metall. Mater. Trans. B 49 (2018) 2681–2691.
M. Wang, Y.P. Bao, H. Cui, W.S. Wu, H.J. Wu, J. Univ. Sci. Technol. Bei**g 32 (2010) 432–437.
K. Tanizawa, F. Yamaguchi, K. Inaoka, K. Tanaka, Metall. Ital. 84 (1992) 17–22.
A. Kamesui, CAMP-ISIJ 5 (1992) 1288.
J.H. Shin, J.H. Park, Metall. Mater. Trans. B 48 (2017) 2820–2825.
Y.M. Qin, X.H. Wang, F.X. Huang, C.X. Ji, J. Northeast. Univ. Nat. Sci. 36 (2015) 1614–1618.
Y.G. Chi, Z.Y. Deng, M.Y. Zhu, Steel Res. Int. 88 (2017) 1600218.
H.F. Shu, L. Liu, X.H. Liu, Steelmaking 32 (2016) No. 3, 55–59.
T. Ehara, Y. Kurose, T. Fujimura, J. Hasunuma, R. Asaho, in: 1996 Steelmaking Conference Proceedings, Iron and Steel Society, Warrendale, Pittsburgh, 1996, pp. 485–486.
K. Sasai, Y. Mizukami, ISIJ Int. 40 (2000) 40–47.
T.S. Kim, Y.S. Chung, L. Holappa, J.H. Park, Metall. Mater. Trans. B 48 (2017) 1736–1747.
Y.Q. Ji, C.Y. Liu, Y. Lu, H.X. Yu, F.X. Huang, X.H. Wang, Metall. Mater. Trans. B 49 (2018) 3127–3136.
C.Y. Liu, F.X. Huang, X.H. Wang, Metall. Mater. Trans. B 47 (2016) 999–1009.
R.S. Wang, S.M. Wang, P.L. Han, Adv. Mater. Res. 788 (2013) 27–30.
Y.M. Qin, X.H. Wang, F.X. Huang, B. Chen, C.X. Ji, Metall. Res. Technol. 112 (2015) No. 4, 405.
L.C. Zhong, X.B. Zhou, Y.X. Zhu, B.Y. Chen, B.C. Huang, J.X. Ke, Steel Res. Int. 83 (2012) 16–21.
M. Song, M. Nzotta, D. Sichen, Ironmak. Steelmak. 38 (2011) 584–589.
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, Johannesburg, 2004, pp. 601–606.
R. Wang, Y.P. Bao, Y.H. Li, T.Q. Li, D. Chen, J. Iron Steel Res. Int. 24 (2017) 579–585.
Y.B. Kang, M.S. Kim, S.W. Lee, J.W. Cho, M.S. Park, H.G. Lee, Metall. Mater. Trans. B 44 (2013) 309–316.
Acknowledgements
The authors would like to express their appreciation to the National Natural Science Foundation of China (No. 51471002).
Author information
Authors and Affiliations
Corresponding authors
Rights and permissions
About this article
Cite this article
Deng, Aj., Fan, Dd., Wang, Hc. et al. Simulation research on oxygen mass transfer between steel and slag in IF steel refining process. J. Iron Steel Res. Int. 27, 409–419 (2020). https://doi.org/10.1007/s42243-020-00370-8
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s42243-020-00370-8