Electrometallurgy Today, 2023, №03



2023 №03 (04)

DOI of Article 10.37434/sem2023.03.05

2023 №03 (06)

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Electrometallurgy Today (Sovremennaya Elektrometallurgiya), 2023, #3, 28-39 pages

Mathematical modeling of electric and thermal processes in graphitized wick electrodes for dc arc steelmaking furnaces

S.V. Rymar, O.G. Bogachenko, I.O. Honcharov, I.O. Neilo, H.V. Kuzmenko, R.S. Hubatyuk

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

Abstract
The paper presents the results of mathematical modeling of electric and thermal processes in graphitized wick (composite) and monolithic electrodes for DC steelmaking furnaces. Calculations were performed using the developed mathematical model based on the finite element method with introduction of a number of simplifications and assumptions. The model allows determination of the regularity of electric and thermal processes running in the electrodes. Distribution of current density, electric potential and temperature in composite electrodes was studied at application of different wick compositions with different ratios of their specific electric resistances and electrode resistances, which enables prediction of their performance at application in arc furnaces. Results of estimated calculations showed that wick electrodes have lower electric losses and their heating temperature than monolithic electrodes, making them more energy and resource efficient. 8 Ref., 8 Fig.
Keywords: composite (wick) electrodes, monolithic electrodes, current density distribution, electric potential distribution, temperature distribution, influence of wick composition, energy efficiency, resource efficiency

Received 03.07.2023

References

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