INVESTIGATION OF THE ROLE OF LIME UNDER SLAGGING AND INERT-GAS SECONDARY STEEL REFINING
Abstract
It is shown that the creation of such technologies is caused by the necessity of making standard high-quality steel in composition and temperature. The secondary steel refining provides these conditions and, consequently, the efficient operation of the steel continuous casting plants. The commercially proven experimental results on the lime consumption effect on the slagging processes in the electric arc furnaces and on the further secondary refining in the ‘ladle-furnace’ units are presented. A flow chart of the complex processing “Electric Arc Furnace → Secondary Refining → Steel Continuous Casting Plant” is offered. It eliminates the increase of the slag oxidation degree under bottom blowing, aluminum loss in the bucket, and the increase of the oxygen concentration in the liquid steel. The proposed technology solutions to optimize the lime flow, slag adjustment, and to regulate the steel ladle stirring regime have permitted to raise the basic technical and economic indicators of the steelmaking at Oskolsky electrometallurgical works.
About the Authors
Denis Anatolyevich Bakhayev
Stary Oskol Technological Institute after A. A. Ugarov, National University of Science and Technology “MISiS” branch.
Russian Federation
Russian Federation
Alexander Ivanovich Kochetov
National University of Science and Technology “MISiS”.
Russian Federation
Russian Federation
Alexander Yuryevich Kem
Don State Technical University.
Russian Federation
Russian Federation
Alexey Alexandrovich Ansimov
Oskol Electrometallurgical Steel Works’ JSC.
Russian Federation
Russian Federation
References
1. Kharlamov, D. A., Merker, E. E., Bulgakov, A. I. Issledovaniye protsessov nagreva metalla pri vnepechnoy obrabotke stali v agregate kovsh-pech. [Study on metal heating processes under secondary refining in ladle furnace.] / Izvestiya vuzov. Chernaya metallurgiya, 2002, no. 3, pp. 26–28 (in Russian).
2. Fedina, V. V., Merker, E. E., Bulgakov, A. I. Shlakovyy rezhim pri elektroplavke i vnepechnoy obrabotke stali. [Slag adjustment under electrosmelting and secondary refining.] Izvestiya vuzov. Cher-naya metallurgiya, 2003, no. 11, pp. 24–26 (in Russian).
3. Kabakov, Z. S., Pakholkova, M. A. Sokrashcheniye poter tepla ot metalla v stalerazlivochnom kovshe. [Metal heat loss reduction of from the metal in steel-teeming ladle.] Metallurg, 2012, no. 9, pp. 51–52 (in Russian).
4. Gizatulin, R. A., Godik, L. A. Razrabotka tekhnologii vnepechnoy obrabotki stali v agregate kovsh-pech. [Secondary refining production engineering in ladle furnace.] Elektrometallurgiya, 2008, no. 2, pp.11–13 (in Russian).
5. Ten, E. B., Likholobov, E. J. Povysheniye kachestva otlivok iz stali 110G13L obrabotkoy v kovshe. [Improvement in quality of steel casting 110G13L through treatment in the ladle.] Liteyshchik Rossii, 2010, no. 10, pp. 18–21 (in Russian).
6. Agapitov, E. B., Kornilov, G. P., Yerofeyev, M. M. Razvitiye sistemy upravleniya elektrodugovoy ustanovkoy kovsh-pech s polymi elektrodami. [Development of control system of electric-arc ladle furnace with hollow electrodes.] Izvestiya vuzov. Elektrotekhnika, 2006, no. 4, pp. 81–84 (in Russian).
7. Kharlamov, D. A., Merker, E. E., Kochetov, A. I. Energosberegayushchaya tekhnologiya vne-pechnoy obrabotki stali v agregate kovsh-pech. [Energy-saving technology of secondary refining in the ladle furnace.] Staryy Oskol : TNT, 2006, 232 p. (in Russian).
Review
For citations:
Bakhayev D.A., Kochetov A.I., Kem A.Yu., Ansimov A.A. INVESTIGATION OF THE ROLE OF LIME UNDER SLAGGING AND INERT-GAS SECONDARY STEEL REFINING. Vestnik of Don State Technical University. 2013;13(7-8):35-41. (In Russ.) https://doi.org/10.12737/2018
Views:
526
Email this article 