The variation in the heat fluxes from the arcs with the wall height in 100-ton electric arc furnaces (EAF) for different arc lengths and slag layer thicknesses and constant arc power are calculated and analyzed. As the depth of submersion of the arcs into the slag is increased from 70 to 300 mm, the maximum heat flux in the lower part of walls decreases by half. As the arc length is decreased by a factor of 1.5 while the arc power remains constant, the heat flux decreases by 10 to 30% and its distribution over the height and perimeter of the walls changes.
Similar content being viewed by others
References
A. N. Makarov, V. V. Okuneva, and A. V. Kuznetsov, “Effect of the slag layer thickness, gas composition, and furnace capacity on the arc efficiency and heat transfer in arc furnaces. Part I. Effect of the slag thickness and furnace capacity on arc efficiency,” Metallurgist, 64, No. 9–10 (2020).
A. N. Makarov, Heat Exchange in Electric-Arc and Torch Metallurgical Furnaces and Power Facilities [in Russian], Lan’, St-Petersburg (2014).
A. V. Nefedov and E. V. Nefedova, “Import-substituting technology of dust unloading from storage hoppers of the Ural Steel electric furnace shop,” Stal’, No. 12, 74–76 (2015).
L. M. Simonyan, A. A. Khil’ko, A. A. Lysenko, et al., “Electric-steelmaking dust as a discontinuous system,” Izv. VUZov, Chern. Metallurg., No. 11, 68–75 (2010).
Yu. A. Gudim, S. T. Ovchinnikov, and I. Yu. Zinurov, “Metal losses during steelmaking in arc furnaces and methods for their decreasing,” Russ. Metall., 2011, No. 6, 495 (2011).
G. V. Samokhvalov and G. I. Chernysh, Electric Furnaces of the Iron and Steel Industry [in Russian], Metallurgiya, Moscow (1984).
M. S. Kuznetsov, E. V. Yakushev, S. A. Kulagin, et al., “Effect of the metal charge mass and the slag thickness on the process of steelmaking in an arc furnace,” Russ. Metall., 2010, No. 12, 1097–1100 (2010).
M. G. Kuz’min, V. S. Cherednichenko, R. A. Bikeev, et al., “Water-cooled units in ultrapower electric arc furnaces,” Russ. Metall., 2014, No. 12, 933–939 (2014).
O. Humer, “Water-cooled panels of modern super-power arc furnaces,” MRT Metallurg. Zavod. Tekhnol., No. 8, 6–14 (1997).
A. G. Kuz’menko, Yu. F. Frolov, M. A. Pozdnyakov, et al., “Electric arc furnaces: state of the art and problems,” Elektrometallurgiya, No. 3, 2–7 (2011).
A. G. Kuz’menko, Yu. F. Frolov, M. A. Pozdnyakov, et al., “Prospects for the development of electric furnaces and ladle furnaces for steelmaking,” Elektrometallurgiya, No. 11, 2–11 (2012).
Author information
Authors and Affiliations
Corresponding author
Additional information
A. N. Makarov, V. V. Okuneva, and A. V. Kuznetsov, “Effect of the slag layer thickness, gas composition, and furnace capacity on the arc efficiency and heat transfer in arc furnaces. Part I. Effect of the slag thickness and furnace capacity on arc efficiency,” Metallurgist, 64, No. 9–10 (2020).
Translated from Metallurg, Vol. 64, No. 11, pp. 24–31, November, 2020.
Rights and permissions
About this article
Cite this article
Makarov, A.N., Krupnov, A.V. Effect of the Slag Layer Thickness, Gas Composition, and Furnace Capacity on the Arc Efficiency and Heat Transfer in Arc Furnaces. Part II. Effect of the Slag Thickness on the Magnitude of Arc Heat Radiation Incident to the Walls. Metallurgist 64, 1121–1129 (2021). https://doi.org/10.1007/s11015-021-01097-x
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11015-021-01097-x