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Leaching mechanism of tetrahedrite in alkaline sulfide solution
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.
2010 (English)In: Conference in Minerals Engineering: Luleå, 2 -3 februari 2010, Luleå tekniska universitet, 2010, p. 13-24Conference paper, Published paper (Other academic)
Abstract [en]

The dissolution kinetics of tetrahedrite in aqueous alkaline sodium sulfide solutions was investigated in this present study. The effect of mineral particle size, reaction temperature, sodium sulfide and sodium hydroxide concentrations on the rate of dissolving antimony from tetrahedrite were studied. The result reveals that the rate of reaction increases with increasing reaction temperature, sodium sulfide concentration, sodium hydroxide concentration and with decreasing mineral particle size. The kinetics study indicates that tetrahedrite leaching rate by the lixiviant under the selected conditions is chemically controlled through the particle surface reaction. Therefore, the activation energy of antimony dissolution from tetrahedrite was estimated to be 81 kJ/ mol, which is in agreement with the value reported for the chemically controlled reactions process.

Place, publisher, year, edition, pages
Luleå tekniska universitet, 2010. p. 13-24
National Category
Metallurgy and Metallic Materials
Research subject
Process Metallurgy
Identifiers
URN: urn:nbn:se:ltu:diva-31074Local ID: 52060140-31ae-11df-806d-000ea68e967bISBN: 978-91-7439-097-1 (electronic)OAI: oai:DiVA.org:ltu-31074DiVA, id: diva2:1004303
Conference
Konferens i mineralteknik 2010 : 02/02/2010 - 03/02/2010
Note
Godkänd; 2010; 20100317 (samawe)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-05-31Bibliographically approved

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Awe, Samuel AyowoleSandström, Åke
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CiteExportLink to record
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