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Laboratory treatments of EAF slag for its use in construction
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.
Höganäs Sweden AB, SE-263 83 Höganäs.
School of Material Science & Engineering, Beifang University of Nationality, Yinchuan, Ningxia.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.
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2013 (English)In: Advanced Materials Research, ISSN 1022-6680, E-ISSN 1662-8985, Vol. 726-731, 2921-2930 p.Article in journal (Refereed) Published
Abstract [en]

Laboratory treatments of a plant EAF slag sample 71686 were conducted using stabilizers containing P2O5 and air granulation. The results show that it is necessary to add the stabilizers to increase contents of P2O5 from 0.39% to 0.7% for the slag stabilization. By a fast air cooling, most of the granules from the granulation are spherical, with a low internal porosity and dense structure. Content of Fe2O3 in the granules increased from 7.92% to 18.4% and FeO decreased from 14.3% to 7.8%, due to an oxidation during the slag granulation. Contents of metal elements, As, Cd, Cr, Mo, Pb, Ni and Zn, in the leachates from the treated slag samples were lower than the limit values for leaching from inert wastes pursuant to Directive 1999/31/EC. The slag samples after the treatments may then be regarded as environmentally friendly to use in construction

Place, publisher, year, edition, pages
2013. Vol. 726-731, 2921-2930 p.
National Category
Metallurgy and Metallic Materials
Research subject
Process Metallurgy
Identifiers
URN: urn:nbn:se:ltu:diva-38867DOI: 10.4028/www.scientific.net/AMR.726-731.2921Local ID: d677ffee-6b6d-4c3c-b5e7-9d7ccb30563dOAI: oai:DiVA.org:ltu-38867DiVA: diva2:1012369
Conference
International Conference on Energy and Environmental Protection : 19/04/2013 - 21/04/2013
Note
Validerad; 2013; 20131015 (ysko); Konferensartikel i tidskriftAvailable from: 2016-10-03 Created: 2016-10-03 Last updated: 2017-10-19Bibliographically approved

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