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Green approach to ironmaking: Briquetting and hydrogen reduction of mill scale using novel binders
SWERIM AB, Aronstorpsvagen 1, 974 37, Luleå, Sweden; Central Metallurgical Research and Development Institute (CMRDI), Cairo 12422, Egypt.ORCID iD: 0000-0003-3833-0817
SWERIM AB, Aronstorpsvagen 1, 974 37, Lulea, Sweden; Central Metallurgical Research and Development Institute (CMRDI), Cairo 12422, Egypt.ORCID iD: 0000-0003-3359-8478
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Minerals and Metallurgical Engineering. Central Metallurgical Research and Development Institute (CMRDI), Cairo 12422, Egypt.ORCID iD: 0000-0002-2358-7719
2024 (English)In: International journal of hydrogen energy, ISSN 0360-3199, E-ISSN 1879-3487, Vol. 62, p. 732-738Article in journal (Refereed) Published
Abstract [en]

The most prominent solutions are the establishment of a circular economy by recirculating the iron-rich residues from steelworks and the adoption of hydrogen as a clean reducing agent to mitigate fossil CO2 emission. One such residue is mill scale, which is generated during steelmaking, casting, and rolling processes. However, the fine particles and easy reoxidation of the mill scale make it difficult to be used directly in iron and steel production without proper compaction. This paper aims to demonstrate the feasibility of mill scale briquetting using organic binders to meet the requirements of hydrogen-based direct reduction. The study will investigate the influence of binder type, binder dosage, moisture content, and compaction pressure on the briquetting process and the briquettes quality. Moreover, the reducibility of optimized briquettes will be examined by hydrogen at 900 °C using a thermogravimetric analyzer coupled with a quadrupole mass spectroscopy (TGA-QMS). The optimal combination for achieving the best mechanical strength and reducibility was a briquette produced with 1% Alcotac® CB6, 1% KemPel, and 2.5% moisture content, compressed at a pressure of 125 kN.

Place, publisher, year, edition, pages
Elsevier Ltd , 2024. Vol. 62, p. 732-738
Keywords [en]
Briquetting, Circular economy, Green transition, Hydrogen reduction, Ironmaking, Mill scale, Organic binders
National Category
Metallurgy and Metallic Materials
Research subject
Process Metallurgy
Identifiers
URN: urn:nbn:se:ltu:diva-104890DOI: 10.1016/j.ijhydene.2024.03.152Scopus ID: 2-s2.0-85187792388OAI: oai:DiVA.org:ltu-104890DiVA, id: diva2:1846950
Note

Validerad;2024;Nivå 2;2024-04-05 (marisr);

Full text license: CC BY

Available from: 2024-03-26 Created: 2024-03-26 Last updated: 2024-04-05Bibliographically approved

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Elsadek, MohamedAhmed, Hesham

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