DOI: 10.52150/2522-9117-2021-35-296-309

Togobitskaya Daria Mykolaivna, Dr. Sci. (Engin.), Professor, Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Academican Starodubova square, 1, Dnipro, Ukraine, 49107. ORCID: 0000-0001-6413-4823. Е-mail: dntog@ukr.net

Snihura Iryna Romanivna, PhD (Engin.), Researcher, Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Academican Starodubova square, 1, Dnipro, Ukraine, 49107. ORCID 0000-0001-5872-7403

Piptyuk Vitalii Petrovych, PhD (Engin.), Senior Researcher, Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Academican Starodubova square, 1, Dnipro, Ukraine, 49107. ORCID 0000-0002-2915-1756

Grekov Stanislav Viktorovych, Researcher, Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Academican Starodubova square, 1, Dnipro, Ukraine, 49107. ORCID 0000-0003-2849-0999

A NEW APPROACH TO SOLVING THE PROBLEM OF DIRECTIONAL FORMATION OF FINAL MELTS DURING STEEL DEBUGGING AT A LADLE-FURNACE UNIT

Summary. The purpose of the work is to reveal the essence of the proposed new approach to describe the patterns of distribution of elements between the metal and slag phases, the basis for the development of which was the created information and intellectual resources of the knowledge base “Metallurgy” developed in Iron and Steel Institute of Z.I.Nekrasov of the NAS of Ukraine. The information component is a database continuously updated with modern data on the properties of metallurgical melts “Metal”, “Slag”, “Ferroalloys” and “Metal-Slag-Gas” and containing the results of our own and industrial experimental studies of the properties of metallurgical melts and literary searches (articles, patents, inventions, scientific developments, monographs). As a scientific basis for describing the processes of interactions between phases, the work uses the original concept of directed chemical bonding, as well as the experience accumulated in the department of physicochemical problems of metallurgical processes in creating information and analytical systems for forecasting and controlling the processes of iron and steel smelting. The starting points laid down in the concept of directed chemical bonding are its core and consider melts as chemically unified systems, and simply not mechanical mixtures of components. This approach allows to describe in more detail the physicochemical interactions in a multiphase metallic medium. The main difference between the proposed approach and the existing ones consists in taking into account interatomic bonds in the interaction of metal and slag melts, complex ratios of their physicochemical and thermophysical properties, as well as significant technological parameters during out-of-furnace treatment in a ladle-furnace unit. Adequate mathematical models (R²≥0,9) have been developed, which allow to quantify the efficiency of assimilation and distribution of additives that determine the technological purposefulness of the processing of an intermediate product and determine the selection from these positions of rational compositions of alloying and refining components within the domestic raw material base.

Keywords: metallurgical melts, parameters of interatomic interaction, predictive models, distribution of elements, ladle furnace.

For citation: Togobitskaya D. M., Snihura I. R., Piptyuk V. P., Grekov S. V. Novyy pidkhid do vyrishennya problemy spryamovanoho formuvannya kintsevykh rozplaviv pry dovedenni stali na ustanovtsi “kivsh-pich” [A new approach to solving the problem of directional formation of final melts during steel debugging at a ladle-furnace unit]. Fundamental’nye i prikladnye problemy černoj metallurgii [Fundamental and applied problems of ferrous metallurgy], 2021, 35, 296-309. (In Ukrainian).

DOI: 10.52150/2522-9117-2021-35-296-309

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