Steel desulphurization with synthetic slag

Authors

  • T. Heput University “Politehnica” Timisoara, Faculty of Engineering
  • E. Ardelean University “Politehnica” Timisoara, Faculty of Engineering
  • A. Socalici University “Politehnica” Timisoara, Faculty of Engineering
  • S. Maksay University “Politehnica” Timisoara, Faculty of Engineering
  • A. Gavanescu University “Politehnica” Timisoara, Faculty of Engineering

DOI:

https://doi.org/10.3989/revmetalm.2007.v43.i1.50

Keywords:

Steel, Desulphurization, Synthetic slag, Treatment, Ladle

Abstract


Generally speaking, sulphur is considered a harmful element for steel quality, reason why all the technological steps are being taken in order to eliminate it from the metal bath. This paper deals with the influence of the chemical composition, on the slag quantity and of the bath stirring condition upon the desulphurization process in the casting ladle by treatment with synthetic slag. The experiments were made at an open-hearth plant with the steel tapping in two ladles (the desulphurization was made with synthetic slag at one ladle while the other one was considered standard) and at the electric steel plant and for the synthetic slag formation a mix was used, made, according to several receipts, of: lime (50-75%), fluorine (0-17%), bauxite (0-32%) and aluminous slag (8-22%). The data were processed in the calculation programs EXCEL and MATLAB, which resulted in a series of correlations between the desulphurization degree and the chemical composition of the slag, respectively the slag quantity both for the charges bubbled with Argon and the unbubbled ones.

Downloads

Download data is not yet available.

References

[1] K. W. Yi, C. Tse, J.-H. Park, M. Valdez, A.W Cramb, S. Sridhar, J. Metall. 32 (2003) 177-184.

[2] M. Valdez, A.W. Cramb, S. Sridhar, Ironmaking Stellmaking 29 (2002) 47-52. doi:10.1179/030192302225001965

[3] S. Vacu, C. Rizescu, E. Berceanu, V. Ursu, M. Dobrescu, I.Marinescu, S. Faur, V. Mihu, V. Moldovan, Elaboration of alloyed steel, vol. I, Ed. Tehnica, Bucharest, Romania, 1983, pp. 255-258.

[4] I. Tripfla, C. Pumnea, Steel deoxidation, Ed. Tehnica, Bucharest, Romania, 1981, pp.33-334.

[5] I. Dragomir, Theory of siderurgical process, Ed. Didactica -Pedagogica, Bucharest, Romania, 1985, pp.253.

Downloads

Published

2007-02-28

How to Cite

Heput, T., Ardelean, E., Socalici, A., Maksay, S., & Gavanescu, A. (2007). Steel desulphurization with synthetic slag. Revista De Metalurgia, 43(1), 42–49. https://doi.org/10.3989/revmetalm.2007.v43.i1.50

Issue

Section

Articles