Lukyanov S.I., Krasilnikov S.S., Shvidchenko D.V., Shvidchenko N.V., Pishnograev R.S. Slag Diagnostic System For Metal Release From the Oxygen Converter by the Intensity of Infrared Melt Radiation

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Abstract

One of the ways to increase the competitiveness of domestic products on the world market of ferrous metallurgy is to increase the efficiency of steelmaking units and the quality of products or product by minimizing the amount of furnace slag in a steel pouring ladle. The latter is achieved through continuous monitoring, mainly visual, of the melt flow at the stage of its release from the bath of the oxygen converter into the steel pouring ladle. The work presents the results of experimental studies and statistical processing of data sets of the intensity of infrared radiation from the melt flow on existing steelmaking units in various technological ranges of steel production. It has been proved that as a diagnostic sign of the presence of slag in the produced melt, one can apply the mathematical expectation of infrared radiation of the melt. Diagnostic conditions for observing slag in the produced melt are determined by the change in the radiation intensity. A technique and an algorithm for calculating the diagnostic conditions for observing slag in the melt for domestic oxygen converters are proposed. The results of industrial testing of the research results are presented.

Keywords

Diagnostic system, oxygen converter, infrared radiation, steel production, monitoring.

Sergei I. Lukyanov

D.Sc. (Engineering), Professor, Department of Electronics and Microelectronics, the Director of Power Engineering and Automated Systems Institute, Magnitogorsk State Technical University, Magnitogorsk, Russia. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.. ORCID: https://orcid.org/0000-0003-4685-7627

Sergey S. Krasilnikov

Ph.D. (Engineering), Associate Professor, the Department of Electronics and Microelectronics, Power Engineering and Automated Systems Institute, Magnitogorsk State Technical University, Engineer of OSC «MMK-Informservice», Magnitogorsk, Russia. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.. ORCID: https://orcid.org/0000-0003-3131-7193

Dmitry V. Shvidchenko

Ph.D. (Engineering), Associate Professor, the Department of Electronics and Microelectronics, Power Engineering and Automated Systems Institute, Magnitogorsk State Technical University, Vice Director of OSC «Technoap Engineering», Magnitogorsk, Russia. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.. ORCID: https://orcid.org/0000-0003-1932-9239

Nickolay V. Shvidchenko

Ph.D. (Engineering), Associate Professor, the Department of Electronics and Microelectronics, Power Engineering and Automated Systems Institute, Magnitogorsk State Technical University, Engineer of OSC «Technoap Engineering», Magnitogorsk, Russia. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.. ORCID: https://orcid.org/0000-0002-3917-9218

Roman S. Pishnograev

Ph.D. (Engineering), Associate Professor, the Department of Electronics and Microelectronics, Power Engineering and Automated Systems Institute, Magnitogorsk State Technical University, Leading Engineer of OSC «Technoap Engineering», Magnitogorsk, Russia. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.. ORCID: https://orcid.org/0000-0001-8854-5723

1. Dyudkin D.A., Kisilenko V.V. Proizvodstvo stali. Tom 1. Protsessy vyplavki, vnepechnoy obrabotki i nepreryvnoy razlivki [Steel production. Vol. 1. Processes of smelting, secondary refining and continuous casting]. Moscow, Heat engineer, 2008. 528 p. (In Russian)

2. Lukyanov S.I., Suspitsyn E.S., Meshcheryakov A.Yu., Krasilnikov S.S. Sistema upravleniya elektroprivodom furmy kislorodnogo konvertera: monografia [Oxygen converter lance electric drive control system : monograph]. Magnitogorsk: Publishing House Nosov Magnitogorsk State Technical University, 2014. 101 p.

3. Lukyanov S.I., Karandaev A.S., Evdokimov S.A. Development and implementation of intelligent systems for diagnosing the technical condition of electrical equipment. Vestnik Magnitogorskogo gosudarstvennogo tehnicheskogo universiteta im. G.I. Nosova [Bulletin of MSTU], 2014, no 1, pp. 129-136. (In Russian)

4. Shtilkering B. The effectiveness of methods of slag cutoff when draining metal from the converter. Metallurgicheskaya i gornorudnaya promyshlennost [Metallurgical and mining industry], 2002, no. 10, pp. 38-41. (In Russian)

5. Nosov A.D., Diachenko V.F., Buzinnik V.M., Formakidov A.M. Early slag detection system. Trudy sedmogo kongressa staleplavilscshikov [Proceedings of the Seventh Congress of Steelmakers]. Magnitogorsk, 2002, pp. 238–242. (In Russian)

6. Frank Zahorszki, Anthony R. A. Lyons. Online slag detection in steelmaking Proc. SPIE 4020, Thermosense XXII, 2000. doi: 10.1117 / 12.381544

7. R. Strąkowski, K. Pacholski, B. Więcek, R. Olbrycht, W. Wittchen and M. Borecki. Radiative parameters of steel slag for FeO con-tent estimation using multispectral thermography system . Quantitative InfraRed Thermography Journal, vol. 11, issue 2, pp. 222-232. DOI: 10.1080 / 17686733. 2014.970754

8. Patent EP 0 922 774 A1 int. CI.6. C21C 5/28, B22D 2/00, G01F 23/292, G0 1 J 5/00/ System and method for minimizing slag carryover during the tapping of a BOF converter in the production of steel / Goldstein, Daniel A., Sharan, Alok Easton, Eliza-beth Ann, publ. 06/16/1999.

9. Patent EP 2 177 947 A1 Int.CI. B22D2 / 00, G03B17 / 00 Video camera device for detecting molten slag in flow of molten steel / Zhiheng Tian, publ. 04/21/2010

10. Lukyanov S.I., Panov A.N., Vasiliev A.E. Osnovy inzhenernogo eksperimenta [Fundamentals of an engineering experiment: textbook. Manual]. Moscow: RIOR: INFRA-M, 2018. 99 р. (In Russian)

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