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Study of Si-domains enabling local reduction of laser-melted iron ore for iron-making during 3D-printing
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.ORCID iD: 0000-0002-3569-6795
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.ORCID iD: 0000-0003-4443-3097
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development. Fraunhofer IWS, Winterbergstrasse 28, 01277, Dresden, Germany.
2022 (English)In: 12th CIRP Conference on Photonic Technologies [LANE 2022] / [ed] M. Schmidt, F. Vollertsen, B.M. Colosimo, Elsevier, 2022, Vol. 111, p. 377-380Conference paper, Published paper (Refereed)
Abstract [en]

One main issue for global warming are CO2-emissions from iron ore reduction during steelmaking. This study presents a new approach, to merge iron ore powder with a suitable reducing agent, here silicon powder. By laser melting of the powders, some of the generated grains are composed of homogeneous slag, O-Fe-Si about 60-30-10 at.-%. However, other grains indeed contain small domains with high iron content, 90-100 at.-%. Manifold appearances of the iron particles were identified, surrounded preferably by slag but also by accompanying domains of high Si-content. These appearances indicate how ore reduction took place, like spherical growth or irregular drop conglomeration. If the iron particles can be extracted as drops, direct 3D-printing from ore can be enabled, including tailored alloying of iron to steel. Such short value chain would not only be efficient but also aims to cause solely environment-friendly by-products, for example SiO2 instead of CO2.

Place, publisher, year, edition, pages
Elsevier, 2022. Vol. 111, p. 377-380
Series
Procedia CIRP, ISSN 2212-8271
Keywords [en]
iron ore powder, reduction, AM, environment-friendly, green economy
National Category
Physical Chemistry Other Chemical Engineering
Research subject
Manufacturing Systems Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-92869DOI: 10.1016/j.procir.2022.08.170Scopus ID: 2-s2.0-85141896795OAI: oai:DiVA.org:ltu-92869DiVA, id: diva2:1694208
Conference
12th CIRP Conference on Photonic Technologies [LANE 2022], 4-8 September 2022, Fürth, Germany
Funder
Swedish Energy Agency, 51021-1Norrbotten County Council
Note

Funder: LKAB; EU ERDF Kolarctic CBC, project I2P, (no. KO4012)

Available from: 2022-09-08 Created: 2022-09-08 Last updated: 2022-12-06Bibliographically approved

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Kaplan, Alexander F.H.Fedina, TatianaBrückner, Frank

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