Process Improvements for Direct Reduced Iron Melting in the Electric Arc Furnace with Emphasis on Slag Operation
1
Thermal Process Engineering, University of Bayreuth, Universitätsstrasse 30, D-94557 Bayreuth, Germany
2
Department for Industrial Furnaces and Heat Engineering, RWTH Aachen University, D-52074 Aachen, Germany
*
Author to whom correspondence should be addressed.
Processes 2021, 9(2), 402; https://doi.org/10.3390/pr9020402
Received: 26 January 2021
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Revised: 12 February 2021
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Accepted: 18 February 2021
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Published: 23 February 2021
(This article belongs to the Section Materials Processes)
Steelmaking based on direct reduced iron (DRI, and its compacted derivative hot briquetted iron, HBI) is an anticipated important global alternative to current steel production based on FeOx reduction in blast furnaces due to its lower specific CO2 emission. The majority of DRI is melted and refined in the electric arc furnace with different process conditions compared to the melting of steel scrap due to its raw material composition being rather different. We provide data and analysis of slag composition of DRI charges vs. steel scrap charges for 16 industrial electric arc furnaces (EAFs). Suggestions for optimized slag operation and resulting process improvements of DRI melting in the EAF are given. A dynamic mass and energy model of the DRI melting in the EAF is introduced to illustrate the implications of the adapted slag operation on the EAF process with DRI charges.
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MDPI and ACS Style
Kirschen, M.; Hay, T.; Echterhof, T. Process Improvements for Direct Reduced Iron Melting in the Electric Arc Furnace with Emphasis on Slag Operation. Processes 2021, 9, 402. https://doi.org/10.3390/pr9020402
AMA Style
Kirschen M, Hay T, Echterhof T. Process Improvements for Direct Reduced Iron Melting in the Electric Arc Furnace with Emphasis on Slag Operation. Processes. 2021; 9(2):402. https://doi.org/10.3390/pr9020402
Chicago/Turabian StyleKirschen, Marcus, Thomas Hay, and Thomas Echterhof. 2021. "Process Improvements for Direct Reduced Iron Melting in the Electric Arc Furnace with Emphasis on Slag Operation" Processes 9, no. 2: 402. https://doi.org/10.3390/pr9020402
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