A numerical analysis as a good tool for a prediction of final sulphur steel ladle content
This work presents the industrial results of sulfur level prediction at the end of vacuum degassing (VD) of low carbon Al-Si killed steels. The effect of plant conditions, such as slag chemistry, temperature, oxygen levels of the molten steel, and slag weight on desulphurization was investigated based on the measured results and thermodynamic calculations. The variables which influence steel desulfurization such as the sulfur capacity, the initial sulfur content, and the amount of ladle slag at the end of the VD process are also defined. The desulfurization procedure was numerically analyzed using the results of 31 heats under real plant conditions in which the measured final sulfur content had been reduced to less than of 10 ppm. A method for prediction of the slag amount based on the material balance of sulfur and aluminum is also presented. The values of the sulfur capacity were determined according to the well-known KTH and optical basicity based models. The obtained results of the regression equation show a predictive final sulfur level ability of R=0.911. This was proved as satisfactory.
N.S.Cyril, A.Fatemi, Int. J. Fatigue 31, (3), (2009), p.526–537;
W. Lv, Z. Xie, Z. Mao, P. Yuan, M.Jia, Neural Computing and Applications, October 2014, Volume 25, Issue 5, p. 1125-1136;
H.Gay, J.Lehmann, VII International Conference on Molten Slags Fluxes and Salts, The South African Institute of Mining and Metallurgy, 2004, p.619-624
B.Ozturk, E.T.Turkdogan, Metal science, 18, 1984, p. 299-305;
B.Ozturk, E.T.Turkdogan, Metal science, 18, 1984, p. 306-309;
B.T Tsao, H.G. Katayama, Trans. ISIJ, 26, (1986), p.717-723;
H. Lachmund, Y. Xie, K.Harste, Steel Research, 72, (2001), p.452-459;
M.Andersson, G.P. Jönsson, M.M. Nzotta, ISIJ International, 39 (1999), p.1140-1149;
H-wei Nian, Z-Zhong Mao, 3rd International Conference on Advanced Computer Theory and Engineering (ICACTE), 2010, p.196-199;
Y. Wang, Y. Zhang, Control and Decision Conference (CCDC), 2011 Chinese, 2011, p.1684-1687, ISBN 978-1-4244-8737-0
D.J. Sosinsky, I.D. Sommerville, Metallurgical Transactions B, Volume 17B, (1986), p.331-337;
R.W. Young, J.A. Duffy, G.J.Hassall, Z.Xu, Ironmaking and Steelmaking, Vol 19, No 3, (1992),p.201-219;
T.B.Tsao, H.G.Katayama, Trans. ISIJ, Vol.26, (1986), p.717-723;
Y.Taniguchi, N.Sano, S.Seetharaman, ISIJ International, Vol. 49 (2009), No 2, p. 156–163;
M. M. Nzotta, D. Sichen, S. Seetharaman, ISIJ Int., 38( 1998), p. 1170-1179;
H.Ohta, H.Suito, Metallurgical and Materials Transactions B, Volume 29B, (1998), p.119-129;
M.T.Andersson, G.P.Jönsson, M.Hallberg, Ironmaking and Steelmaking Vol.27, No4, (2000), p. 286-293;
C.Wagner, Metallurgical Transactions B, Volume 6B, (1975), p.405-409;
Z. Slović, Doctoral dissertation, TMF, 2013, Beograd, Serbia, UDК number: 669.01/.09
Z.Slović, LJ.Nedeljković, K.Raić, Z.Odanović, Kovove Mater. 50, (2012), p. 185–192, doi: 10.4149/km 2012 3 185;
Z.Slović, LJ.Nedeljković, K.Raić, T.Volkov-Husović, Materiali in tehnologije/Materials and Technology, Vol.46, N°6, 2012, p.683-688;ISSN 1580-2949;
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their published articles online (e.g., in institutional repositories or on their website, social networks like ResearchGate or Academia), as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
Except where otherwise noted, the content on this site is licensed under a Creative Commons Attribution 4.0 International License.