LAPSE:2023.24895
Published Article
LAPSE:2023.24895
Process Improvements for Direct Reduced Iron Melting in the Electric Arc Furnace with Emphasis on Slag Operation
March 28, 2023
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.
Record ID
Keywords
direct reduced iron, electric arc furnace, process improvement, process model
Subject
Suggested Citation
Kirschen M, Hay T, Echterhof T. Process Improvements for Direct Reduced Iron Melting in the Electric Arc Furnace with Emphasis on Slag Operation. (2023). LAPSE:2023.24895
Author Affiliations
Kirschen M: Thermal Process Engineering, University of Bayreuth, Universitätsstrasse 30, D-94557 Bayreuth, Germany
Hay T: Department for Industrial Furnaces and Heat Engineering, RWTH Aachen University, D-52074 Aachen, Germany [ORCID]
Echterhof T: Department for Industrial Furnaces and Heat Engineering, RWTH Aachen University, D-52074 Aachen, Germany [ORCID]
Hay T: Department for Industrial Furnaces and Heat Engineering, RWTH Aachen University, D-52074 Aachen, Germany [ORCID]
Echterhof T: Department for Industrial Furnaces and Heat Engineering, RWTH Aachen University, D-52074 Aachen, Germany [ORCID]
Journal Name
Processes
Volume
9
Issue
2
First Page
402
Year
2021
Publication Date
2021-02-23
Published Version
ISSN
2227-9717
Version Comments
Original Submission
Other Meta
PII: pr9020402, Publication Type: Journal Article
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Published Article
LAPSE:2023.24895
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External Link
doi:10.3390/pr9020402
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[v1] (Original Submission)
Mar 28, 2023
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Mar 28, 2023
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