DOI: 10.52150/2522-9117-2025-39-05
V. H. Kysliakov1, Ph. D. (Tech.), Head of Department, ORCID 0000-0002-1775-5050
I. O. Manachyn1, Ph. D. (Tech.), Senior Researcher, ORCID 0000-0002-1031-3241
A. A. Pokhvalityi2, Ph. D. (Tech.), Assoc. Prof., ORCID 0000-0002-9652-767X
1 Iron and Steel Institute of Z.I. Nekrasov National Academy of Sciences of Ukraine, Academy of Sciences of Ukraine, Academican Starodubova Square, 1, Dnipro, 49107, Ukraine
2 Dniprovsky State Technical University, Dniprobudivska St., 2, Kamianske, 51918, Ukraine
* Corresponding author: vovkadragon12@gmail.com
RESEARCH ON THE “HOT” MODEL OF IMPURITIES BEHAVIOR IN CAST IRON DURING COMPLEX PROCESSING
Abstract. The aim of this work is to establish the regularities of behavior and distribution of impurities in cast iron during complex treatment on a hot model, taking into account the influence of thermodynamic and kinetic factors, to optimize the cleaning processes and improve the quality of the metal. The complex treatment of molten iron involves the use of several technological effects, which allows for more effective control over the chemical composition and microstructure of the metal. The relevance of this treatment is driven by the need to produce high-quality alloys while reducing costs and improving environmental safety. An important tool for improving the technology is modeling the removal processes and the behavior of impurities in molten metal. Of particular value is research on so-called “hot” models that involve working directly with liquid iron. Calculations were performed for the conditions of injection treatment of cast iron for the purpose of complex removal of impurities in a laboratory induction furnace with a capacity of 100 kg. A general scheme of heat losses of liquid cast iron during complex refining from impurities by injecting reagents into carrier gases was constructed. It is worth noting the fact that this dosing device was first used to work with liquid cast iron. Prior to the “hot” treatments, cold tests of all equipment were performed, which showed that it was ready for the experimental part of the research. Four treatments were carried out. At the beginning and end of each treatment, samples of cast iron and slag were taken, and temperature measurements were also made. The amount of reagent dispensed was recorded according to the readings of the scales before and after the treatment. During the treatments, the technological parameters of the injection were worked out, which made it possible to carry out the treatment technologically, without increased turbulence. The analysis of the content of impurities in cast iron showed that, taking into account the conditions of the experiment, desulfurization, desilting and dephosphorization processes occur, including simultaneously.
Key words: cast iron, complex processing, sulfur, silicon, phosphorus, modelling.
For citation: Kysliakov, V. H., Manachyn, I. O., & Pokhvalityi, A. A. (2025). Research on the “hot” model of impurities behavior in cast iron during complex processing. Fundamental and applied problems of ferrous metallurgy, 39, 78-88. https://doi.org/10.52150/2522-9117-2025-39-05
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Received 14.07.2025
Accepted 21.10.2025
Published online 01.12.2025
