DOI: 10.52150/2522-9117-2024-38-168-185

Manachyn Ivan Oleksandrovych, Ph. D. (Tech.), Senior Researcher, Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Academican Starodubova Square, 1, Dnipro, 49107, Ukraine. ORCID: 0000-0001-9795-6751. E-mail: ovoch-isi@outlook.com

Yelisieiev Volodymyr Ivanovych, Ph. D. (Pys.-Math.), Senior Researcher, Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Academican Starodubova Square, 1, Dnipro, 49107, Ukraine. ORCID: 0000-0003-4999-8142. E-mail: ovoch-isi@outlook.com

Kysliakov Volodymyr Hennadiiovych, Ph. D. (Tech.), Senior Researcher, Head of Department, Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Academican Starodubova Square, 1, Dnipro, 49107, Ukraine. ORCID: 0000-0002-1775-5050. E-mail: ovoch-isi@outlook.com

Petrusha Victoria Petrivna, Junior Resreacher, Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Academican Starodubova Square, 1, Dnipro, 49107, Ukraine. ORCID:  0000-0002-1031-3241. E-mail: ovoch-isi@outlook.com

THEORETICAL ASSESSMENT OF A SINGLE INFLUX OF TECHNOLOGICAL FACTORS ON THE EFFECTIVENESS OF THE PROCESS OF DESULFURIZATION OF IRON WITH MAGNESIUM

Abstract. The aim of the study was to theoretically evaluate, based on physicochemical calculations, the single effect of temperature, initial and final sulfur content, depth of the liquid bath, and mass of iron on the efficiency of the process of desulfurization of iron with magnesium. The theoretical evaluation showed that for all considered iron temperatures (1200 – 1600 °C), the thermodynamically most preferred mechanism for desulphurization of iron using magnesium is the process based on the interaction of sulfur dissolved in the metal phase with dissolved magnesium; the desulphurization process with the dissolution of vaporized magnesium in liquid iron is thermodynamically more probable for all considered tuyere immersion depths (0 – 4 m). A theoretical quantitative assessment of the effect of the tuyere immersion depth on the efficiency of desulphurization of iron with vaporized magnesium and dissolution of vaporized magnesium in iron was performed. It has been determined that when the final sulfur content changes within the range of 0.002 – 0.010%, with an increase in the final sulfur content in iron by 0.001%, the efficiency of the process of desulfurization of iron with magnesium increases by 10%; an increase in the initial sulfur concentration by 0.01% leads to an increase in the probability of the reaction through dissolved magnesium in the range of 15 – 25%, and the reaction through gaseous magnesium in the range of 9 – 19%; with an increase in the initial sulfur concentration in iron by 0.01% and a change in the final sulfur content by 0.001% in the range of 0.002 – 0.010%, the increase in the efficiency of the desulfurization process increases in the range of 5.5 – 9.4%; no significant effect of the mass of the treated iron on the desulfurization process was found.

Key words: desulfurization, iron, theoretical assessment, ladle, slag, mixer.

DOI: https://doi.org/10.52150/2522-9117-2024-38-168-185

For citation: Manachyn, I. O., Yelisieiev, V. I., Kysliakov, V. H., & Petrusha, V. P. (2024). Theoretical assessment of a single influx of technological factors on the effectiveness of the process of desulfurization of iron with magnesium. Fundamental and applied problems of ferrous metallurgy, 38, 168-185. https://doi.org/10.52150/2522-9117-2024-38-168-185.

References

1. International Magnesium Association The Global Voice for magnesium, October 21, 1999.

2. Shevchenko, O. F., Manachin, I. A., Vergun, O. S. et al. (2017). Sudden desulfurization of cast iron in ladles. Technology, research, analysis, improvement. Dnipro – VAL.

3. Desulphurization of cast iron with magnesium (1980). Metallurgy

4. Shevchenko, A. F., Bolshakov, V. I., & Bashmakov, O. M. (2011). Technology and equipment for desulfurization of cast iron with magnesium in heavy ladles. Scientific thought

5. Vergun, O. S., Lafer, I. M., & Shevchenko, O. F. (1985).  To the question of the mechanism of desulfurization of cast iron with magnesium. Steel, (3), 17-18

6. Eliseev, V. I., Bulakhtin, O. S., Shevchenko, A. F., Kurylova, L. P., Rudenko, O. L. (2007). Model of movement and dissolution of magnesium-containing bubbles in a metal melt. Theory and practice of metallurgy, (2-3), 70-74

7. Rudenko, A. L. (2016). Kinetics of interfacial transition of sulfur in the process of ladle refining of cast iron with magnesium. Izv. vuz. Physical and chemical principles of metallurgical processes, 59(12), 896-902

8. Sigarev, E. N. (2013). Scientific substantiation and development of a complex energy-efficient technology for converter production of an iron-carbon semi-product: Cand. Dr. Sci: 05.16.02 -Dneprodzerzhinsk

9. Okhotskyi, V. B. (2001). Model of desulfurization of cast iron. Magnesium. Metallurgical and mining industry, (1) 23-25

10. Zborshchyk, A. M. (2001). Analysis of thermodynamics and kinetics of desulfurization of cast iron with magnesium. Steel, (7), 17-20

11. Zborshchyk, A. M. (2005). Features of the kinetics of desulfurization of cast iron in pouring ladles of Azovstal. Steel, (10), 54-57

12. Zborshchyk, A. M. (2010). Influence of magnesium dissolution conditions in cast iron on the efficiency of metal desulfurization. Izv. Black metallurgy, (7), 21-24

13. Zborshchyk, A. M. (1996). Analysis of the reaction mechanism during desulfurization of cast iron with magnesium. Steel, (12), 14-17

14. Zborshchyk, A. M., Klymanchuk, V. V., & Kosolap, N. V. (2006). Efficiency of modern technologies of desulfurization of cast iron with magnesium. Metal and casting of Ukraine, (3-4), 20-22

15. Machikin, V. I., & Zborshchyk, O. M. (1979). Study of desulfurization of cast iron with magnesium. Steel, (4), 251-254

16. Machikin, V. I., Ivanov, A. I., & Zborshchyk, O. M. (1976). Some features of mass transfer processes during out-of-domain desulfurization of cast iron with magnesium. Izv. vuz. Black metallurgy, (4), 29-31

17. Machikin, V. I., & Sobnyk, A. M. (1982). Mathematical description of the processes of desulfurization of cast iron and steel by alkaline earth metals. Izv. vuz. Black metallurgy, (1), 34-38

18. Omelianenko, V. F., & Bornatsky, I. I. (1985). About deoxidation and desulfurization of cast iron with magnesium. Metals, (1), 24-27

19. Konopli, V. G., & Poganykh, P. A. (1985). On the mechanism of desulfurization of cast iron during its treatment with magnesium. Metallurgy and coke chemistry, (88), 49-55

20. Dudkin, D. A., Greenberg, S. E., & Marintsev, S. M. (2001). Mechanism of desulfurization of cast iron by granular magnesium. Metallurgist, (4), 38-40

21. Chichkarev, E. A., Trotskan, A. I., & Alekseeva, V. A. (2003). Estimation of the parameters of interaction of the conditions of desulfurization of liquid cast iron with magnesium. Casting processes, (1), 7-11

22. Shevchenko, A. F. (2010). Kompleksnyi podkhod pri vybore i otcenke tekhnologii vnepechnoi desulfuratcii chuguna. Fundamental and applied problems of ferrous metallurgy, 22, 106-120

23. Irons, G. A, & Guthrie, I. L. (1981). Kinetics of molten iron desulfurization using magnesium vapor. Metallurgical Transactions B, (12), 755-767

24. Irons, G., & Guthrie I. (1981). Kinetic aspects of desulfurization of cast iron with magnesium. Metals Society, (3), 114-121

25. Sun, H., Liu, Y, & Lu, M. (2010). Behavior of Ar -1% Mg bubbles during desulphurization of cast iron by magnesium injection. Cermetinformatsiya. News of ferrous metallurgy abroad. Steelmaking, (4), 27-29.

26. Viana, J. F., Costa, S. L. de S., Prenazzi, A., Lee, D. C. Hot Metal Desulfurization by CaO-Mg Co-Injection in Usiminas Steel Shop 2. P .151-161.

27. Yang, J., Okuvura, K., & Sano, M. A. (2002). Behavior of magnesium in the desulphurization of liquid cast iron using magnesium vapor generated in situ during aluminothermal reduction of magnesium oxide. ISIJ International, 42(7), 685-693

28. Yang, J., Kuwabary, M., Okuvura, K., & Sano, M. A. (2005). Prevention of resulfurization during the desulfurization process in the production of magnesium vapor by aluminothermal reduction of magnesium oxide. ISIJ International, 45(12), 1795-1803.

29. Okhotsky, V. B., Kostelov, O. L., & Simonov, V. K. et al (1997). Theory of metallurgical processes. IZMN

30. Kubashevsky O., & Olcock S. B. (1974). Metallurgical thermochemistry. Metallurgy

31. Fundamentals of thermodynamics and kinetics of steelmaking processes (1986). Higher school

32. Development and development of the theory and technology of out-of-furnace desulphurization of cast iron in ladles by blowing dispersed reagents. (1997). Dissertation. Dr. Sci: 05.16.02. Dnepropetrovsk

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