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

• Published in: Metallurgist (New York) Vol. 64; no. 11-12; pp. 1121 - 1129
• Main Authors: Makarov, A. N., Krupnov, A. V.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01-03-2021; Springer; Springer Nature B.V
• Subjects: Arc heating; Characterization and Evaluation of Materials; Chemistry and Materials Science; Electric arc furnaces; Electric arcs; Gas composition; Heat flux; Heat transfer; Industrial equipment; Materials Science; Metallic Materials; Radiation; Slag; Thermal radiation; Thickness; Walls; steel; efficiency; furnace; heat flux; electric arc; thermal radiation
• ISSN: 0026-0894; 1573-8892
• DOI: 10.1007/s11015-021-01097-x

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.