Journals →  Chernye Metally →  2020 →  #6 →  Back

80th anniversary of Nizny Tagil Iron and Steel Plant (EVEAZ NTMK)
ArticleName The use of the ionic theory of slags in the calculation of desulfurization in the ladle-furnace unit
ArticleAuthor M. V. Savelyev, O. Yu. Sheshukov, A. A. Metelkin, O. I. Shevchenko, D. K. Egiazaryan

JSC EVRAZ NTMK (Nizhny Tagil, Russia):

M. V. Savelyev, Head of the Prospective Development Dept. of Technical Management Administration,


Ural Federal University named after the First President of Russia B. N. Yeltsin (Ekaterinburg, Russia):
O. Yu. Sheshukov, Dr. Eng., Prof., Director of the Institute for New Materials and Technologies, e-mail:


Nizhny Tagil Technological Institute of Technology, Nizhny Tagil branch of the Ural Federal University (Nizhny Tagil, Russia):
A. A. Metelkin, Cand. Eng., Senior Lecturer, Dept. of Metallurgical Technology, e-mail:
O. Yu. Shevchenko, Dr. Eng., Head of the Dept. of Metallurgical Technology, e-mail:


Institute of Metallurgy of the Ural Branch of the Russian Academy of Sciences (Ekaterinburg, Russia):
D. K. Egiazaryan, Cand. Eng., Researcher, Pyrometallurgical Laboratory, e-mail:


The issues of sulfur removal in the ladle-furnace unit are considered. Metal desulfurization is primarily achieved by converting sulfur to slag. The sulfur distribution coefficient between the metal and slag is affected by the sulfide capacity of the slag, coefficient of sulfur activity in the metal, oxidative potential of the medium, and the equilibrium constant of the sulfur distribution reaction between the metal and slag. The influence of the molten metal temperature on the sulfide capacity of the slag is considered. A technique is proposed for removing sulfur from heterogeneous slags, in which their ionic structure is taken into account. Optical basicity is taken as a criterion for the refining ability of slags. The effect of amphoteric Al2O3 oxide on the sulfide capacity of slags is considered.

keywords Ladle-furnace aggregate, desulfurization, ionic slag structure, optical basicity, sulphide slag capacity

1. Bigeev А. М., Bigeev V. А. Metallurgy of steel. Theory and technology of steel smelting: tutorial for universities. 3rd revised and enlarged edition. Magnitogorsk: MGTU. 2000. 544 p.
2. Dyudkin D. А., Kisilenko V. V. Steel production. Vol. 3. Ladle steel metallurgy. Мoscow: Teplotekhnik. 2008. 528 p.
3. Fandrich R., Lüngen H. B., Wuppermann C. D. German ladle metallurgy: state and main research areas. Chernye Metally. 2008. No. 7. pp. 26–33.
4. Popel S. I., Sotnikov А. I., Boronenkov V. N. Theory of metallurgical processes: tutorial for universities. Moscow: Metallurgiya. 1986. 463 p.
5. Kazachkov Е. А. Calculations based on the theory of metallurgical processes: tutorial for universities. Moscow: Metallurgiya. 1988. 288 p.
6. Results of science and technology. Series: Theory of metallurgical processes. Moscow: VINITI, 1987. 208 p.
7. Korovin V. А., Leushin О. I., Palavin R. N., Kolganov V. N., Cherkasov S. V. et. al. Ladle treatment and iron quality. Chernye Metally. 2009. No. 8. pp. 13–15.
8. Sommervill I. D. Measurement, forecast and application of metallurgical slag tanks. Injection metallurgy 86: Proceedings of the IV International conference (11–13 June 1986, Luleå, Sweden). Moscow: Metallurgiya, 1990. pp. 107–120.
9. Metelkin А. А., Sheshukov О. Yu., Savelyev М. V., Shevchenko О. I., Egiazaryan D. К. To the question of steel desulfurization in the ladle-furnace unit. Proceedings of the International scientific conference «Physicochemical foundations of metallurgical processes» named after Academician А. М. Samarin (25–28 November 2019, Moscow). Moscow: IMET RAN, 2019. p. 77.
10. Novikov V. К., Nevidimov V. N. Polymer nature of molten slag: tutorial. Yekaterinburg: GOU VPO UGTU – UPI, 2006. 62 p.
11. Sheshukov О. Yu., Mikheenkov М. А., Nekrasov I. V., Egiazaryan D. К., Metelkin А. А. et. al. Issues of utilization of refi ning slags of steelmaking. Nizhny Tagil: NTI (branch) UrFU, 2017. 208 p.
12. Metelkin А. А., Sheshukov О. Yu., Nekrasov I. V., Shevchenko O. I. Improvement of the durability of the lining of out-of-furnace steel processing units. Nizhny Tagil: NTI (branch) UrFU, 2015. 144 p.

Language of full-text russian
Full content Buy