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Study of Si-domains enabling local reduction of laser-melted iron ore for iron-making during 3D-printing
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Produkt- och produktionsutveckling.ORCID-id: 0000-0002-3569-6795
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Produkt- och produktionsutveckling.ORCID-id: 0000-0003-4443-3097
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Produkt- och produktionsutveckling. Fraunhofer IWS, Winterbergstrasse 28, 01277, Dresden, Germany.
2022 (engelsk)Inngår i: 12th CIRP Conference on Photonic Technologies [LANE 2022] / [ed] M. Schmidt, F. Vollertsen, B.M. Colosimo, Elsevier, 2022, Vol. 111, s. 377-380Konferansepaper, Publicerat paper (Fagfellevurdert)
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.

sted, utgiver, år, opplag, sider
Elsevier, 2022. Vol. 111, s. 377-380
Serie
Procedia CIRP, ISSN 2212-8271
Emneord [en]
iron ore powder, reduction, AM, environment-friendly, green economy
HSV kategori
Forskningsprogram
Produktionsutveckling
Identifikatorer
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
Konferanse
12th CIRP Conference on Photonic Technologies [LANE 2022], 4-8 September 2022, Fürth, Germany
Forskningsfinansiär
Swedish Energy Agency, 51021-1Norrbotten County Council
Merknad

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

Tilgjengelig fra: 2022-09-08 Laget: 2022-09-08 Sist oppdatert: 2022-12-06bibliografisk kontrollert

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

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