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Process Improvements for Direct Reduced Iron Melting in the Electric Arc Furnace with Emphasis on Slag Operation

Title data

Kirschen, Marcus ; Hay, Thomas ; Echterhof, Thomas:
Process Improvements for Direct Reduced Iron Melting in the Electric Arc Furnace with Emphasis on Slag Operation.
In: Processes. Vol. 9 (23 February 2021) Issue 2 . - pp. 402-412.
ISSN 2227-9717
DOI: https://doi.org/10.3390/pr9020402

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Abstract in another language

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.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: electric arc furnace; direct reduced iron; process model; process improvement
Institutions of the University: Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Thermal Process Technology
Faculties > Faculty of Engineering Science > Chair Thermal Process Technology > Chair Thermal Process Technology - Univ.-Prof. Dr. Marcus Tobias Kirschen
Faculties
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 600 Technology
600 Technology, medicine, applied sciences > 620 Engineering
600 Technology, medicine, applied sciences > 670 Manufacturing
Date Deposited: 11 Mar 2021 07:40
Last Modified: 17 Mar 2021 06:56
URI: https://eref.uni-bayreuth.de/id/eprint/63851