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Effect of slag composition on desulfurization and inclusionmodification during ladle furnace refining

Published online by Cambridge University Press:  12 August 2014

Xin Hao ,
Xin-hua Wang  and
Wan-jun Wang
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Abstract

The influence of LF refining slag composition on desulfurization and inclusionmodification was investigated through industrial experiments and thermodynamic analysis.The results show that the sulfide capacity decreases with the decrease in(%CaO)/(%SiO2)and (%CaO)/(%Al2O3) of the slag. The theoretical sulfur distributions agreewell with the analysis results when the sulfide capacity is calculated by Zhang’s model,but the theoretical sulfur distributions are higher than the analysis results when thesulfide capacity is calculated by the KTH model. During the LF refining process,inclusions are transformed from Al2O3 inclusions into CaO-MgO-Al2O3 system inclusions. Higher slagbasicity results in higher CaO and MgO and lower Al2O3 content inclusions in moltensteel at the end of the LF process.

Keywords

LF refiningslagdesulfurizationinclusion modification
Type
Research Article
Information
Metallurgical Research & Technology , Volume 111 , Issue 4 , 2014 , pp. 239 - 245
Copyright
© EDP Sciences 2014

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References

Lachmund, H., Xie, Y., Harste, K., Steel Res. Int. 72 (2001) 452-459
Lachmund, H., et al., Steel Res. Int. 74 (2003) 77-85
Richardson, F.D., Fincham, C.J.B., J. Iron Steel Institute (1954) 4-15
Fincham, C.J.B., Richardson, F.D., Proc. Roy. Soc. London Ser. A, Math. Phys. Sci. (1954) 40-62
Sosinsky, D.J., Sommerville, I.D., Metall. Mater. Trans. B 17 (1986) 331-337
Young, R.W., Duffy, J.A., Iron. Steel. 12 (1992) 201-219
Nzotta, M.M., Du, S.C., Seetharaman, S., ISIJ Int. 38 (1998) 1170-1179
Nzotta, M.M., Du, S.C., Seetharaman, S., Metall. Mater. Trans. B 30 (1999) 909-920
Zhang, G.H., Chou, K.C., Pal, U., ISIJ Int. 53 (2013) 761-767
Andersson, M.A.T., Jonsson, P.G., Nzotta, M.M., ISIJ Int. 39 (1999) 1140-1149
Wang, X.H., et al., Science China 55 (2012) 1863-1872
Li, Q., et al., Journal of University of Science and Technology Beijing 34 (2012) 1262-1267
Jiang, M., Wang, X.H., Wang, W.J., Steel Res. Int. 81 (2010) 759-765
Ohta, H., Suito, H., Metall. Mater. Trans. B 29 (1998) 119-129
J.Y. Zhang, Metallurgical Physical Chemistry, Metallurgical Industry Press, Beijing, 2007
Deng, Z.Y., Zhu, M.Y., ISIJ Int. 53 (2013) 450-458