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Recycling of process water in sulphide flotation: effect of calcium and sulphate ions on flotation of galena
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
Boliden Mineral AB.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.
2012 (English)In: Minerals Engineering, ISSN 0892-6875, E-ISSN 1872-9444, Vol. 39, p. 77-88Article in journal (Refereed) Published
Abstract [en]

The effects of major components of calcium and sulphate species present in recycled process water on galena flotation has been investigated through Hallimond flotation, zeta-potential, diffuse reflectance FTIR spectroscopy and XPS measurements using pure galena mineral. The significance of process water species in flotation has been understood using deionised water, process water and simulated tap water containing equivalent calcium and sulphate ions concentration as in process water.Hallimond flotation indicated marginally lower recoveries of galena in the presence of calcium and sulphate ions using potassium amyl xanthate as collector. Zeta-potential shows the adsorption of calcium ions whereby the potential are seen to increase while sulphate ions have no significant effect. FTIR and XPS studies revealed surface calcium carbonate and/or calcium sulphate species in process water which affected xanthate adsorption. Presence of surface oxidised species such as sulfoxy, hydroxyl species on galena at pH 10.5 in deionised and process water was also revealed.

Place, publisher, year, edition, pages
2012. Vol. 39, p. 77-88
National Category
Metallurgy and Metallic Materials Geochemistry
Research subject
Mineral Processing; Applied Geology
Identifiers
URN: urn:nbn:se:ltu:diva-7421DOI: 10.1016/j.mineng.2012.07.016ISI: 000312119600013Scopus ID: 2-s2.0-84866870829Local ID: 5cce247c-91b5-4751-8805-3254c53177b3OAI: oai:DiVA.org:ltu-7421DiVA, id: diva2:980310
Note
Validerad; 2012; 20121005 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Ikumapayi, FataiMäkitalo, MariaKota, Hanumantha Rao

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