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2024 №04 (03) DOI of Article
10.37434/sem2024.04.04
2024 №04 (05)

Electrometallurgy Today 2024 #04
"Suchasna Elektrometallurgiya" (Electrometallurgy Today), 2024, #4, 24-28 pages

Mathematical modeling of the processes of component diffusion in a wick-graphite electrode system in industrial DC arc steel melting furnace of DSP PS-12 type

O.V. Makhnenko, O.S. Kostenevich, G.Yu. Saprykina, O.G. Bogachenko, I.O. Goncharov, I.O. Neilo

E.O. Paton Electric Welding Institute of the NAS of Ukraine 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: makhnenko@paton.kiev.ua

Abstract
The work shows the possibility of using the method of mathematical modeling to predict the distribution of chemical elements in the «wick-electrode» system when operating in an arc steel-melting furnace, allowing for the diffusion processes. The coefficients of diffusion for each component were determined on the basis of the developed two-dimensional finite element model of the process of component diffusion in this system, and taking into account the experimental data on the residual distribution of the component content in the cross-section of the wick electrode. These coefficients were used to conduct modeling of the diffusion process in order to assess the possible distribution of the component content in larger-diameter wick electrodes and to demonstrate the modeling results, taking into account different initial concentrations. 6 Ref., 2 Tabl., 8 Fig.
Keywords: arc steel-melting furnaces, graphitized wick electrodes, specific electrical resistance, components, concentration, diffusion, mathematical modeling

Received: 09.01.2024
Received in revised form:08.08.2024
Accepted: 23.12.2024

References

1. Bogachenko A.G., Mishchenko D.D., Braginets V.I., Galinich V.I., Neilo I.A., Lyutyi A.P., Fridman M.A. (2016) Saving of electric power at the arc steel melting furnaces of direct current with graphitized cored electrodes. Sovrem. Elektrometall., 1, 58-64. https://doi.org/10.15407/sem2016.01.09
2. Paton, B. E., Bogachenko, O. G., Kyiko, S. G. et al. (2021) Experience of application of graphitized wick electrodes in an industrial arc steel-making furnace. Suchasna Elektrometal., 1, 48-53. https://doi.org/10.37434/sem2021.01.06
3. Hua-jun Guo, Xin-hai Li, Xin-ming Zhang et al. (2007) Diffusion coefficient of lithium in artificial graphite, mesocarbon microbeads, and disordered carbon. New Carbon Materials, 1, 7-11. https://doi.org/10.1016/S1872-5805(07)60006-7
4. Persson, K., Sethuraman, V. A., Hardwick, L.J. et al. (2010) Lithium diffusion in graphitic carbon. J. Phys. Chem. Lett., 1(8), 1176-1180. https://doi.org/10.1021/jz100188d
5. Wang, Z., Ratvik, A. P., Grande, T., Selbach, S.M. (2015) Diffusion of alkali metals in the first stage graphite intercalation compounds by vdW-DFT calculations. The Royal Society of Chemistry Advances, 5, 15985-15992. https://doi.org/10.1039/C4RA15529G
6. Dedenko, L. G., Kerzhentsev, V. V. (1977) Mathematical processing and presentation of experimental results. Moscow, Moscow State University Publ. House [in Russian].

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