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Influence of alumina on physical properties of an industrial zinc-copper smelting slag: Part 3: Melting behaviour
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.
Kungliga tekniska högskolan, KTH.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.ORCID iD: 0000-0003-1511-8020
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.
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2013 (English)In: Transactions of the Institution of Mining and Metallurgy Section C - Mineral Processing and Extractive Metallurgy, ISSN 0371-9553, E-ISSN 1743-2855, Vol. 122, no 1, p. 56-62Article in journal (Refereed) Published
Abstract [en]

A combination of different experimental techniques and thermodynamic calculations has been used to investigate the melting behaviour of an industrial iron silicate slag and mixtures of this slag with 5, 10 and 15 wt-% alumina addition. Differential scanning calorimetry (DSC) and thermooptical observation were applied to monitor the solidus temperature and softening behaviour of the samples respectively. Estimation of the liquidus temperature was made using the second derivative of activation energies for viscous flow, with respect to temperature. All experimentally detected values were compared to predictions made using the FactSageTM6.2 thermodynamic package. Results show that as the slag lies in the fayalite primary phase field, the liquidus temperature decreases due to the increased alumina concentration. In the hercynite primary crystallisation phase field, however, alumina addition to the system increases the liquidus temperature. The solidus temperature does not vary significantly due to the current changes in the total alumina content of the slag.

Place, publisher, year, edition, pages
2013. Vol. 122, no 1, p. 56-62
National Category
Metallurgy and Metallic Materials
Research subject
Process Metallurgy
Identifiers
URN: urn:nbn:se:ltu:diva-3010DOI: 10.1179/1743285512Y.0000000028Local ID: 0c2046bb-b453-4b0d-b825-2b87841f43caOAI: oai:DiVA.org:ltu-3010DiVA: diva2:975865
Note
Validerad; 2013; 20120312 (sinmos)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-01-19Bibliographically approved

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Mostaghel, SinaSamuelsson, CaisaBjörkman, Bo
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Metallurgy and Metallic Materials

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