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Influence of alumina on physical properties of an industrial zinc-copper smelting slag: Part 1: Viscosity
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: Mineral Processing and Extractive Metallurgy: Transactions of the Institutions of Mining and Metallurgy: Section C, ISSN 0371-9553, E-ISSN 1743-2855, Vol. 122, no 1, p. 42-48Article in journal (Refereed) Published
Abstract [en]

The rotating cylinder method was applied to measure the viscosities of an industrial iron silicate slag and mixtures of this slag with 5, 10 and 15 wt-% alumina addition, in temperature range 1100–1300°C. The measured viscosities were compared with the predicted values using two of the commercially available software products for viscosity calculations, namely Thermoslag®1.5 and FactSageTM6.2. As the models can only predict viscosities for a solid free melt, obtained values by FactSageTM6.2 were modified using the Einstein–Roscoe equation. Results show that aluminium behaves as a network former cation in this type of slag, and by increasing the alumina concentration, the melt becomes progressively polymerised. Consequently, the viscosity of the slag increases at a given temperature, which is supported by thermodynamic predictions. According to the modified FactSageTM6.2 calculations, the viscosity of the solid containing slag increases from 2.1 to 5.5 poise at the industrial operating temperature (∼1250°C).

Place, publisher, year, edition, pages
2013. Vol. 122, no 1, p. 42-48
National Category
Metallurgy and Metallic Materials
Research subject
Process Metallurgy
Identifiers
URN: urn:nbn:se:ltu:diva-15358DOI: 10.1179/1743285512Y.0000000029Scopus ID: 2-s2.0-84877140734Local ID: edbbe333-31ec-4f41-98e5-717b7e77f442OAI: oai:DiVA.org:ltu-15358DiVA, id: diva2:988332
Note
Validerad; 2013; 20120312 (sinmos)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2022-05-10Bibliographically approved

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Mostaghel, SinaSamuelsson, CaisaBjörkman, Bo

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Metallurgy and Metallic Materials

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