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Influence of alumina on physical properties of an industrial zinc-copper smelting slag: Part 2 - Apparent density, surface tension and effective thermal diffusivity
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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, 49-55 p.Article in journal (Refereed) Published
Abstract [en]

Apparent density, surface tension and effective thermal diffusivity of an industrial iron-silicate based slag and mixtures of this slag with 5, 10 and 15 wt-% alumina addition were measured using the sessile drop and the laser flash techniques respectively. A comparison is made between corresponding values obtained from the commonly applied models and the experimental measurements. Results show that increasing the alumina concentration in slag increases the degree of polymerisation of the melt and, consequently, its effective thermal diffusivity. By alumina addition to the system, the surface tension increases progressively from 338 mN m-1, in the reference slag sample, to 488 mN m-1 in the mixture of slag and 15 wt-% alumina addition. The apparent density of the liquid-solid containing slag is continuously decreased due to the increased alumina concentration. However, the effect is more pronounced between 8 and 12 wt-% total alumina content in the slag.

Place, publisher, year, edition, pages
2013. Vol. 122, no 1, 49-55 p.
Keyword [en]
Apparent density, Effective thermal diffusivity, NBO/T, Surface tension, Alumina addition, Alumina concentration, Alumina content, Degree of polymerisation, Experimental measurements, Laser flash techniques, Alumina, Copper smelting, Silicates, Slags
National Category
Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:kth:diva-134680DOI: 10.1179/1743285512Y.0000000015Scopus ID: 2-s2.0-84877118783OAI: oai:DiVA.org:kth-134680DiVA: diva2:677083
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QC 20131209

Available from: 2013-12-09 Created: 2013-11-27 Last updated: 2017-12-06Bibliographically approved

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Seetharaman, Seshadri
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  • apa
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  • de-DE
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