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Briquette Smelting in Electric Arc Furnace to Recycle Wastes from Stainless Steel Production
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Minerals and Metallurgical Engineering.
State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, School of Metallurgical and Ecological Engineering, University of Science and Technology, Beijing.
School of Metallurgical and Ecological Engineering, University of Science and Technology, Beijing , Department of Ferrous Metallurgy, School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing.
Department of Ferrous Metallurgy, School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing.
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Number of Authors: 6
2015 (English)In: Journal of Iron and Steel Research International, ISSN 1006-706X, E-ISSN 2210-3988, Vol. 22, no Suppl. 1, 10-16 p.Article in journal (Refereed) Published
Abstract [en]

Wastes from stainless steel production were briquetted together with carbon for smelt-reduction in the electric arc furnace, EAF, to achieve an internal recycling. A laboratory induction furnace was used to simulate the EAF. With a close simulation of the smelting, disintegration of the briquettes heated under load and recovery of metals from briquettes melted together with stainless steel and slag former were investigated. The influences of test conditions on carbon reduction of oxides in the briquettes were also examined. The briquettes endured heating at 1 186 °C under load of 3.5 kg and could be charged to the melt in small quantity without causing serious splashing. For a high metal recovery, it was necessary to charge the briquettes together with slag former. Small local zones of smelt-reduction with high carbon concentration could thus be formed during the charger heating. Silicon content in the metal near to the briquettes should be minimised to achieve a high degree of carbon reduction. Based on results obtained from this study, suggestions were made on smooth operations of smelt-reduction of the briquettes by using EAF or induction furnace with large scales.

Place, publisher, year, edition, pages
2015. Vol. 22, no Suppl. 1, 10-16 p.
National Category
Metallurgy and Metallic Materials
Research subject
Process Metallurgy
Identifiers
URN: urn:nbn:se:ltu:diva-10863DOI: 10.1016/S1006-706X(15)30131-XLocal ID: 9bc8f41e-d33b-4f6d-8ac2-673c8c94f85fOAI: oai:DiVA.org:ltu-10863DiVA: diva2:983811
Note

Validerad; 2016; Nivå 2; 20160128 (andbra)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2016-11-29Bibliographically approved

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