National University of Science and Technlogy “MISiS” (Moscow, Russia):

Korostelev A. A., e-mail: koral-00@mail.ru
Kotelnikov G. I., Cand. Eng., Associate Prof.
Semin A. E., Dr. Eng., Prof.

Volzhsky Pipe Plant (Volzhskiy, Russia):
Bozheskov A. N., Deputy Head of Shop Manager on Technology

Hot briquetted iron (HBI) is widely used in electric arc furnaces in Russian metallurgical plants in recent years as metal charge material. This affects the technical and economical parameters of melts. The main advantage of using charge with HBI compared to using 100 % scrap is improvement of the steel quality, meaning lower content of harmful impurities. The features of use of prospective material — HBI — in metal charge of electric arc, and electric furnaces operating on hard charge are shown in this article. It is also displayed that increase of HBI amount in the charge leads to increase of such basic technological melting parameters as consumption of electric power, oxygen, gas as well as slag-forming materials (lime and magnesium flux). It is accompanied also by quality improvement of obtained semiproduct in its content of non-ferrous metals and phosphorus. The charts showing the effect of HBI part on the melting technological parameters and on the content of non-ferrous impurities are built. Data analysis was carried out for steelmaking in EAF-150 at Russian metallurgical plants. Relatively low HBI cost in comparison with cast iron and expensive scrap, as well as noise level decrease based on increase of poured density of charge material, can be considered as the main HBI advantages. At present time the work aimed on determination of the optimal procedure of electric melting with HBI in charge is continuing.

1. Shalimov A. G., Semin A. E., Galkin M. P., Kosyrev K. L. Innovation development of electro-steel making production. Moscow : Metallurgizdat, 2014. 308 p.
2. Gonzalez O. J. P. et al. Effect of Arc Length on Fluid Flow and Mixing Phenomena in AC Electric Arc Furnaces. ISIJ International. 2012. Vol. 52, No. 5. pp. 804–813.
3. Babenko A. A. et al. Magnesia slags formation by the periods of smelting in EAF and their part in slag sponging efficiency. Proceedings of the XII Congress of steel-makers. Moscow : Metallurgizdat, 2013. pp. 106–109.
4. Babenko A. A. et al. Theoretical basis and smelting technology in oxygen converters and EAF under magnesia slags. Proceedings of the XIV Congress of steel-makers. Moscow : LLC «Assotsiatsiya staleplavilshchikov», 2016. pp. 157–162.
5. Kozhukhov A. A. Development of scientific basis of steel slags foaming for the purpose of increasing of energy-technological indicators of steel production in EAF: Dissertation … of Doctor of Engineering Sciences. Moscow. 2016. 335 p.
6. Trakhimovich V. I., Shalimov A. G. Use of direct-process iron during steel smelting. Moscow : Metallurgiya, 1988. 247 p.
7. Schliephake H., Röpke G., Piotrowski W. Einsatz von Eisenschwamm in dem Elektrolichtbogenofen der Ispat-Hamburger Stahlwerke. Chernye Metally. 1995. No. 8–9. pp. 23–26.
8. Greis P. Pre-reduced products and their utilization in europe. Chernye Metally. 1997. No. 6. pp. 8–13.
9. Hassan A. I. Investigation of EAF smelting technology for metallized raw materials with various content of phosphorous for increasing the steel making efficiency: Dissertation … of Candidate of Engineering Sciences. Moscow, 2016. 134 p.
10. Erbe A., Heller H.-P. Merchant hot briquetted iron off take market potential in Germany, Austria and Switzerland. Chernye Metally. 2015. No. 6. pp. 24–30.
11. Hassan A. I., Kotelnikov G. I., Semin A. E., Megahed G. Analysis of melting technology in EAF steelmaking from pellets and HBI with high phosphorous content. Chernye Metally. 2015. No. 5. pp. 64–69.
12. Kashcheev I. D., Strelov K. K., Mamykin P. S. Chemical technology of refractories. Moscow : Intermet Engineering, 2007. 752 p.
13. Guzman I. Ya. Chemical technology of ceramics. Moscow : Stroymaterialy, 2003. 496 p.
14. Kashcheev I. D. Oxide-carbonaceous refractiroes. Moscow : Intermet Engineering, 2000. 265 p.
15. Khoroshavin L. B., Perepelitsyn V. A., Kononov V. A. Magnesia refractories. Moscow : Intermet Engineering, 2001. 576 p.