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.

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