Results are presented from a theoretical study of the effect of the liquid residue in electric-arc steelmaking furnaces (EAFs) on unit electric-power consumption and the duration of the heat. Quantitative estimates are made of the heat flux which exists during the heating and melting of continuously charged small batches of scrap. In this case, the scrap is heated and melted as a result of forced convection in the liquid residue. The heat flux is also quantitatively estimated for the case when the entire scrap charge is introduced into the furnace at once and the scrap is heated and melted by radiation from the arcs in the furnace’s working space. A hypothesis is proposed to explain the existence of an optimum weight for the liquid residue in EAFs charged by different methods.
Similar content being viewed by others
References
Yu. N. Tuluevskii, I. Yu. Zinurov, and V. G. Shver, “New capabilities of Consteel furnaces,” Elektrometallurgiya, No. 6, 22–27 (2011).
F. Memoli, M. Guzzon, and C. Giavani, “The evaluation of preheating and the importance of hot heel in supersized Consteel* systems,” Iron & Steel Technol., No. 1, 70–78 (2012).
A. G. Belkovskii, Ya. L. Kats, B. A. Sivak, and N. V. Pasechnik, “The future of arc steelmaking furnaces – specialization of their design,” Chern. Metally, No. 3, 14–19 (2013).
A. G. Belkovskii and Ya. L. Kats, “Modeling the refining of a semifinished product in an EAF,” Chern. Metall.: Byull. NTiEI, No. 1, 42–48 (2010).
B. Butcher, B. Laroy, K. Vanover, et al., “Single-charge EAF modification: installation and experience,” Iron & Steel Technol., No. 2, 42–48 (2011).
J. A. Jones, R. McClanahan, and K. Carraway, “Analysis of meltshop operating data at North Star Bluescope Steel to quantify the expected benefits of increased furnace bottom volume on EAF operations,” Iron & Steel Technol., No. 1, 56–60 (2012).
L. A. Godik, N. A. Kozyrev, P. A. Shabanov, et al., “Development of a technology for making steel in electric furnaces with a high consumption of liquid pig iron,” Stal, No. 5, 30–33 (2009).
R. Gottardi, M. Miani, A. Partyka, et al., “Decarburization efficiency in EAF with hot metal charge,” Iron & Steel Technol., No. 1, 61–69 (2012).
S. T. S. Won and F. Jie, “The development of hot metal charging process in China,” SEAISI Quart. J., No. 2, 32–40 (2010).
A. G. Shalimov and V. I. Trakhimovich, The Use of Direct-Reduced Iron in Steel Production, Metallurgiya, Moscow (1982).
D. Guo, D. Swickard, M. Alavanja, et al., “Numerical simulation of heavy scrap melting in BOF steelmaking,” Iron & Steel Technol., No. 4, 125–132 (2013).
H. Gaye, M. Wanon, P. Gugliermina, et al., Kinetics of Scrap Dissolution in the Converter - Theoretical Model and Plant Experimentation (1985), pp. 91–104.
V. I. Yavoiskii, G. A. Dorofeev, and I. L. Povkh, Theory of the Injection of Steelmaking Baths, Metallurgiya, Moscow (1974).
A. G. Belkovskii and Ya. L. Kats, “Substantiation and calculation of the optimum content of carbon in the charge of an EAF,” Proc. XI Congr. Steelmakers, Chermetinformatsiya, Moscow (2011), pp. 226–233.
A. G. Belkovskii, Study and Determination of the Parameters of a Technology for Producing Steel with the Use of a Medium-Capacity EAF to Make the Production of Semifinished Sections More Efficient: Dissert. Cand. Techn. Sci., 05.16.02, Moscow (2013).
M. Ya. Medzhibozhskii, Principles of the Thermodynamics and Kinetics of Steelmaking Processes, Izd. Vishcha Shkola, Kiev–Donetsk (1986).
A. V. Egorov, Electric Refining Furnaces in Ferrous Metallurgy, Metallurgiya, Moscow (1985).
A. N. Makarov, “Phenomena accompanying the combustion of an electric arc and a flame in metallurgical furnaces. Part 1,” Elektrometallurgiya, No. 7, 22–32 (2012).
F. Martell-Chavez, M. Ramirez-Argaez, A. Llamas-Terres, et al., “Theoretical estimation of peak arc power to increase energy efficiency in electric arc furnaces,” ISIJ Int., 53, No. 5, 743–750 (2013).
Author information
Authors and Affiliations
Corresponding authors
Additional information
Translated from Metallurg, No. 11, pp. 34–40, November, 2014. Original article submitted July 31, 2014.
Rights and permissions
About this article
Cite this article
Belkovskii, A.G., Kats, Y.L. Effect of the Mass of the Liquid Residue on the Performance Characteristics of an Eaf. Metallurgist 58, 950–958 (2015). https://doi.org/10.1007/s11015-015-0023-7
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11015-015-0023-7