Stability of spinels in a high basicity EAF slag
2011 (English)In: Ferrous Slag-Resource Development for an Environmentally Sustainable World: Proceedings of the 6th European Slag Conference, 20-22 October 2010, Madrid, Spain, 2011, Vol. 5, 147-156 p.Conference paper (Refereed)
Due to environmental regulations, steel producers in Europe, are obliged to reduce the amount of landfilled material, which is mainly slag. By fulfilling technical and environmental criteria, slag can be used in civil engineering applications. One of the most important environmental considerations is the leaching behaviour of the slag, especially with respect to chromium. A considerable research effort has been devoted to decrease the leaching of chromium from the slags by forming stable spinel phases. Most of the existing work focused on spinel forming agents. In this paper, influences of three different already formed spinels, in three different amounts, on an EAF slag from a low alloyed steel production are investigated. After re-melting and solidification, mineralogical properties of the samples were studied using scanning electron microscopy (SEM) and X-ray diffraction (XRD). Only one of the additives resulted in formation of distinguishable chromium rich spinels, which could immobilize chromium. The results are discussed by comparison with stable phases at equilibrium based on thermodynamic calculations.
Place, publisher, year, edition, pages
2011. Vol. 5, 147-156 p.
Research subject Process Metallurgy
IdentifiersURN: urn:nbn:se:ltu:diva-37952Local ID: c293324c-02cd-48c6-9ce3-5e7f8bb332d4OAI: oai:DiVA.org:ltu-37952DiVA: diva2:1011451
European Slag Conference : 20/10/2010 - 22/10/2010
Godkänd; 2011; 20111218 (ysko)2016-10-032016-10-03Bibliographically approved