Electrometallurgy Today, 2024, №02



2024 №02 (05)

DOI of Article 10.37434/sem2024.02.06

2024 №02 (07)

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Electrometallurgy Today (Sovremennaya Elektrometallurgiya), 2024, #2, 35-45 pages

Composite cored graphitized electrodes for industrial DC and AC steel-melting furnaces

O.G. Bogachenko¹, D.D. Mishchenko¹, I.O. Goncharov¹, I.O. Neilo¹, M.M. Gasik², S.G. Kiiko³, I.M. Logozinskyi³, K.M. Gorban³

¹E.O. Paton Electric Welding Institute of the NAS of Ukraine. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: stemet@ukr.net
²Aalto University, Espoo, Finland. E-mail: michael.gasik@aalto.fi
³PJSC «Dniprospetsstal». 81 Pivdenne Highway, 69000, Zaporizhzhya, Ukraine

Abstract
The paper presents summary data based on the results of laboratory studies and comprehensive industrial trials of a fundamentally new type of product in electrometallurgy — cores of graphitized electrodes developed at PWI, Ukraine, for dc and ac arc steel-melting furnaces of up to 50 t capacity. It is shown that during the last decade the world production of steel has increased continuously, getting very close to 2 bln tons per year. Approximately 30 % of this volume is produced in arc furnaces, and by the end of this decade it will reach 40 %. It is shown that the cored electrode arc has much lower specific current and power values in all the sections (cathode, column, anode) than the monolithic electrode arc. It was found that voltage drop in the core cathode spot is 2.3...3.3 times smaller than in the monolithic electrode. Cored electrodes improve all the technical-economic characteristics of operation of DC and AC steel-melting furnaces. 13 Ref., 4 Tabl., 9 Fig.
Keywords: arc furnaces, graphitized electrodes, geometrical and power parameters of the arc, electrode work function, specific power, specific electrical resistance

Received: 29.04.2024
Received in revised form: 14.05.2024
Accepted: 07.06.2024

References

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11. Bogachenko, O.G., Mishchenko, D.D., Honcharov, I.O. et al. (2023) Application of graphitized wick electrodes in DC arc steel furnaces. Suchasna Elektrometal., 1, 53-61 [in Ukrainian]. DOI: https://org/10.37434/sem2023.01.07
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