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Characteristics of steel slag under different cooling conditions
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.ORCID iD: 0000-0001-9297-8521
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2007 (English)In: Waste Management, ISSN 0956-053X, E-ISSN 1879-2456, Vol. 27, no 10, p. 1335-1344Article in journal (Refereed) Published
Abstract [en]

Four types of steel slags, a ladle slag, a BOF (basic oxygen furnace) slag and two different EAF (electric arc furnace) slags, were characterized and modified by semi-rapid cooling in crucibles and rapid cooling by water granulation. The aim of this work was to investigate the effect of different cooling conditions on the properties of glassy slags with respect to their leaching and volume stability. Optical microscopy, X-ray diffraction, scanning electron microscope and a standard test leaching (prEN 12457-2/3) have been used for the investigation. The results show that the disintegrated ladle slag was made volume stable by water granulation, which consisted of 98% glass. However EAF slag 1, EAF slag 2 and the BOF slag formed 17%, 1% and 1% glass, respectively. The leaching test showed that the glass-containing matrix did not prevent leaching of minor elements from the modified slags. The solubility of chromium, molybdenum and vanadium varied in the different modifications, probably due to their presence in different minerals and their different distributions.

Place, publisher, year, edition, pages
2007. Vol. 27, no 10, p. 1335-1344
National Category
Metallurgy and Metallic Materials Metallurgy and Metallic Materials
Research subject
Process Metallurgy; Mineral Processing
Identifiers
URN: urn:nbn:se:ltu:diva-12991DOI: 10.1016/j.wasman.2006.08.002ISI: 000249227500008Scopus ID: 2-s2.0-34547115946Local ID: c24a46d0-6db8-11dc-89fb-000ea68e967bOAI: oai:DiVA.org:ltu-12991DiVA, id: diva2:985942
Note
Validerad; 2007; 20070928 (bajo)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Tossavainen, MiaEngström, FredrikYang, QixingMenad, NourreddineLidström-Larsson, MargaretaBjörkman, Bo

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Tossavainen, MiaEngström, FredrikYang, QixingMenad, NourreddineLidström-Larsson, MargaretaBjörkman, Bo
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Sustainable Process Engineering
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Waste Management
Metallurgy and Metallic MaterialsMetallurgy and Metallic Materials

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