The Paton Welding Journal, 2023, №03



2023 №03 (05)

DOI of Article 10.37434/tpwj2023.03.06

2023 №03 (07)

---

The Paton Welding Journal, 2023, #3, 42-50 pages

Application of graphitized wick electrodes in DC arc steel furnaces

O.G. Bogachenko¹, D.D. Mishchenko¹, I.O. Honcharov¹, V.I. Braginets¹, I.O. Neilo¹, Yu.A. Plevako²

¹E.O. Paton Electric Welding Institute of the NAS of Ukraine 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua
²PJSC «Ferrotrading», 7 Teplychna str., 69009, Zaporizhzhya.

Abstract
It is shown that wick graphitized electrodes are an effective means of improvement of technical and economic parameters of DC arc steel furnaces. These electrodes were developed at the E.O. Paton Electric Welding Institute of the NAS of Ukraine. Investigations in industrial furnaces of DSP PT-12 type showed that the wick electrode arc always stays in the electrode center, thus providing a stable electric mode of melting with long arcs and low voltages of the power source. It was established that voltage in the cathode area, as well as the ripple ranges of the current and voltage of the wick arc are essentially lower than for the regular (monolithic) graphitized electrode. In DC arc steel furnaces wick electrodes provide saving of active power, lowering of reactive power, increase of cos φ and efficiency, lowering of alloying element burnout and furnace noise level. Ref. 20, Tabl. 2, Fig. 9.
Keywords: wick graphitized electrodes; AC and DC arc steel furnaces; electric power; volt-ampere characteristic; current and voltage ripple; furnace performance

Received: 20.02.2023
Accepted: 24.04.2023

References

1. Dyudkin, D.A., Kisilenko, V.V. (2008) Steelmaking. Vol. 1. Moscow, Teplotekhnik [in Russian].
2. (2013) «Steeltime». Data portal on ferrous and non-ferrous metallurgy.
3. Belkovsky, A.G., Kats, Ya.L., Krisnyansky, M.V. (2012) State-of-the-art and tendencies of development of steel production technology in DSP and their structures. Staleplavilnoe Proizvodstvo, 8, 15–18 [in Russian].
4. Grishchenko, S.G., Granovsky, V.K. (2015) Metallurgy of the world and Ukraine in 2015: Problems and Prospects. Int. Sci.- Tech. Conf. of National Metallurgical Academy of Ukraine (Ukraine, Dnipro, 9–11 December, 2015), 23–26 [in Russian].
5. Shatokha V. (2015) Review of core support capabilities of the equipment SoS analysis and evaluation. Proc. of 2nd Inter. Conf. on Advanced in Metallurgical Processes and Material (Kyiv, Ukraine, June 3–5 2015).
6. Milyaev, A.F., Kadnikov, S.V. (2002) Choice of type and capacity of cast iron and steel in foundry. Elektrometallurgiya, 11, 21–24 [in Russian].
7. Dyudkin, D.A., Bat, S.Yu., Gri8nberg, S.E., Marintsev, S.N. (2003) Steel production at ladle-furnace unit. Donetsk, OOO Yugovostok [in Russian].
8. Ramires, M., Alexis, I., Trapage, G. et al. (2002) Stirring of melt in direct current arc furnace. Novosti Chyornoi Metallurgii za Rubezhom, 3, 54–57 [in Russian].
9. Savitsky, A. (2000) On choice of rational design of direct current DSP. Elektrometallurgiya, 8, 13–19 [in Russian].
10. (2015) Classification of modern arc electric furnaces. Direct and alternating current arc furnaces. Ukrainian Association of steelmakers. Inform. Portal [in Russian].
11. Elansky, D.G. (2001) Tendencies of development of electric steelmaking. Elektrometallurgiya, 5, 3–18 [in Russian].
12. Platonov, B.P., Kotelnikov, O.I. (1996) Examination of dustgas emissions of direct and alternating current arc furnaces. Litejnoe Proizvodstvo, 1, 24–27 [in Russian].
13. Volodin, A.M., Bogdanovsky, A.S., Malinovsky, V.S. (2004) Results of operation of DC furnace DS PTU-20 at OJSC “Tyazhpressmash”. Ibid., 4, 31–35 [in Russian].
14. Makarov, A.N., Shimko, M.B., Ostrik, V.V. (2004) Analysis of the main technical and economic indices of DC and AC arc furnace operation. Elektrometallurgiya, 3, 5–9 [in Russian].
15. Boom Rob (2015) Breakthrough development in ironmaking and steelmaking: Collaboration or competition. Proc. of 2nd Inter. Conf. on Advanced in Metallurgical Processes and Materials (Kyiv, Ukraine, June 3–5 2015).
16. Tishchenko,, P.I.,Timoshenko, S.N., Onishchenko, S.P. (2015) Hearth electrodes DSP PT. Review of the main technical solutions. DonNTU, PE ROUD Society. Ukrainian Association of steelmakers. Inform. Portal on Ferrous and Nonferrous Metallurgy. Donetsk, Ukraine [in Russian].
17. Paton, B.E., Lakomsky, V.I., Galinich, V.I. et al. (2011) Cored electrodes of electric arc furnaces. Chiornye Metally, 5, 13–15 [in Russian].
18. Bogachenko, A.G., Mishchenko, D.D., Braginets, V.I. et al. (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
19. Kazachkov, E.A., Chepurnoj, A.D. (2005) Ways to increase the productivity of arc steel furnaces. Visnyk Pryazov. DTU, 15, 1–5 [in Russian].
20. Sidorets, V.N., Pentegov, I.V. (2013) Deterministic chaos in nonlinear circuits with an electric arc. Kyiv, IAW [in Russian].

---