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Effects of Al2O3 on mineralogy of the fayalite slag
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.
2008 (English)In: REWAS 2008: Global Symposium on Recycling, Waste Treatment / [ed] B. Mishra; C. Ludwig; S. Das, Minerals, Metals & Materials Society, 2008, 977-982 p.Conference paper, Published paper (Refereed)
Abstract [en]

Ronnskar smelter of Boliden Mineral AB, Sweden, is well known for recycling of base and precious metals. Slag from the electrical furnace is processed at the fuming plant to produce zinc clinker. The granulated slag is a by-product used as e.g. construction material. In this paper, influences of Al2O3 on mineralogy of the slag, which can affect its chemical and physical properties, are investigated. Different mixtures of Al2O3 /fumed slag were prepared. Re-melting was carried out in a Thermo-Gravimetry (TG) furnace with an inert atmosphere. Scanning electron microscopy (SEM) and X-ray diffractometer (XRD) were then applied for the analyses. Investigations depict that addition of alumina to slag, results in an increase in the number of spinels and a transformation from iron rich to aluminum rich spinels. Anorthite (CaAl2S2O8) will also be formed.

Place, publisher, year, edition, pages
Minerals, Metals & Materials Society, 2008. 977-982 p.
National Category
Metallurgy and Metallic Materials
Research subject
Process Metallurgy
Identifiers
URN: urn:nbn:se:ltu:diva-40423Local ID: f8fc1c60-bb07-11dd-b223-000ea68e967bISBN: 978-0-87339-726-1 (electronic)OAI: oai:DiVA.org:ltu-40423DiVA: diva2:1013945
Conference
Global Symposium on Recycling, Waste Treatment and Clean Technology : 12/10/2008 - 16/10/2008
Note
Godkänd; 2008; 20081125 (ysko)Available from: 2016-10-03 Created: 2016-10-03 Last updated: 2017-11-25Bibliographically approved

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Mostaghel, SinaSamuelsson, CaisaLehner, Theo

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