MATHEMATICAL MODEL OF THE MODES OF INTERACTION OF OXYGEN JETS WITH THE MELT DURING UPPER PURGING CONVERTER BATH
https://doi.org/10.57070/2304-4497-2023-3(45)-87-93
Abstract
Using mathematical modeling, a comprehensive analysis of experimental data on the study of the behavior of a 350-ton converter bath during characteristic periods of upper purging at a high rate of decarburization of the melt and at the final stage of the operation was performed. The developed and adapted mathematical models and numerical studies made it possible to additionally describe macrophysical phenomena during the movement of gas-metallic, gas-slag and multicomponent phases in the working space of the converter. It is established that the overall dynamics and circulation of the gas-and-metal medium as a whole is determined by the processes in the reaction zone and the level of foamed slag. When the melt is purged through the upper lance in the mode of buried gas jets and a different amount of slag in the working space, quantitative characteristics of the relative values of the gas content in the slag in relation to the average density and concentration of gas in the emulsion are determined. The obtained data allow us to supplement the understanding of the hydrodynamics of the metal and slag phases in the converter during the characteristic periods of melting and use the information obtained in the development of rational parameters of the blast mode of the converter operation.
About the Authors
Evgenii V. Protopopov
Siberian State Industrial University
Russian Federation
Russian Federation
Dr. Sci. (Eng.), Prof. of the Chair of Ferrous Metallurgy
Aleksandr A. Umanskii
Siberian State Industrial University
Dr. Sci. (Eng.), Assist. Prof. of the Chair of Ferrous Metallurgy
Ivan S. Morozov
Siberian State Industrial University
Candidates for a Degree of Сand. Sci. (Eng.) of the Chair of Ferrous Metallurgy
Maksim K. Shakirov
Siberian State Industrial University
Cand. Sci. (Eng.), Associate Professor of the Department of Automation and Information Systems
References
1. Sizov A.M. Gas dynamics and heat ex-change of gas jets in metallurgical processes. Moscow: Metallurgiya, 1987, 256 p. (In Russ.).
2. Okhotskii V.B. Structure of gas jets. Izvestiya. Ferrous metallurgy. 1983, no. 11, pp. 32–35. (In Russ.).
3. Baptizmanskii V.I., Okhotskii V.B. Physico-chemical bases of the oxygen converter pro-cess. Kiev-Donetsk: Vishcha shkola, 1981, 183 p. (In Russ.).
4. Yavoiskii V.I., Dorofeev G.A., Povkh I.L. The theory of purging a steelmaking bath. Moscow: Metallurgiya, 1974, 495 p. (In Russ.).
5. Protopopov E.V., Cherntevich A.G. Investigation of the interaction of oxygen jets with waste converter gases. Izvestiya. Ferrous metallurgy. 1996, no.10, pp. 5–9. (In Russ.).
6. Okhotskii V.B., Chernyatevich A.G., Prosvirin K.S. On the mechanism of the carbon burnout process when metal is purged with oxygen. In: Metallurgy and Coke Chemistry: Rep. mezhved. sci.-tech. sat. Kyiv: Tekhnika, 1977, no. 52, pp. 71–72. (In Russ.).
7. Okhotskii V.B., Baptizmanskii V.I., Prosvirin K.S., Shchdrin G.A. The structure of the reaction zone during metal purging with oxygen. Izvestiya. Ferrous metallurgy. 1973, no. 8, pp. 50–53. (In Russ.).
8. Protopopov E.V., Cherntevich A.G., Yudin S.V. Investigation of chemical and temperature gradients in a converter bath using high-temperature modeling. Izvestiya. Ferrous metallurgy. 1997, no. 10, pp. 20–24. (In Russ.).
9. Chernyatevich A.G., Protopopov E.V. Experimental study of the parameters of the reaction zone of a converter bath for the purpose of combined purging. Izvestiya. Ferrous metallurgy. 1991, no. 6, pp. 17–24. (In Russ.).
10. Chernyatevich A.G., 3arvin E.Ya., Borisov Yu.N., Volovich M.I. On the mechanism of emission formation from an oxygen converter with an upper purge. Izvestiya. Ferrous metallurgy. 1976, no. 10, pp. 54–59. (In Russ.).
11. Protopopov E.V., Cherntevich A.G., Yudin S.V. Hydrodynamic features of the behavior of the converter bath with various methods of purging. Izvestiya. Ferrous metallurgy. 1998, no. 8, pp. 23–29. (In Russ.).
12. Mokrinsky A.V., Protopopov E. V., Chernyatevich A.G. Hydrodynamic modes of interaction of acidic jets with a converter bath. Izvestiya. Ferrous metallurgy. 2005, no. 4, pp. 11 – 17. (In Russ.).
13. Chernyatevich A.G., Protopopov E. V., Ganzer L.A. On some peculiarities of the oxidation of impurities in a converter bath during combined purging: Investigation of the interaction of acidic jets with outgoing gases. Izvestiya. Ferrous metallurgy. 1987, no. 4, pp. 25–29. (In Russ.).
14. Okhotskii V.B. Interaction of a gas jet with a liquid when purging from above. Izvestiya. Ferrous metallurgy. 1984, no. 1, pp. 45–49. Нет названия (In Russ.).
15. Okhotskii V.B. Physico-chemical mechanics of steelmaking processes. Moscow: Metallurgiya, 1993, 151 p. (In Russ.).
16. Chernyatevich A. G., Sigarev E. M., Zuev O. I. Matematichne modelyuvannya. 2002, no. 1 (8), pp. 77–80. (In Russ.).
17. Sigarev E. N., Chernyatevich A. G., Selishchev V.N. Matematichne modelyuvannya. 2001, no. 1 (6), pp 93–96. (In Russ.).
18. Sigarev E. N., Kosukhina O. S., Popko O. V. Matematichne modelyuvannya.2003, no. 1 (9), pp. 50–53. (In Russ.).
Review
For citations:
Protopopov E., Umanskii A., Morozov I., Shakirov M. MATHEMATICAL MODEL OF THE MODES OF INTERACTION OF OXYGEN JETS WITH THE MELT DURING UPPER PURGING CONVERTER BATH. Bulletin of the Siberian State Industrial University. 2023;(3):87-93. (In Russ.) https://doi.org/10.57070/2304-4497-2023-3(45)-87-93
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