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Recycling of process water in sulphide flotation: effect of calcium and sulphate ions on flotation of galena
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Industriell miljö- och processteknik.
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Geovetenskap och miljöteknik.
Boliden Mineral AB.
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Industriell miljö- och processteknik.
2012 (engelsk)Inngår i: Minerals Engineering, ISSN 0892-6875, E-ISSN 1872-9444, Vol. 39, s. 77-88Artikkel i tidsskrift (Fagfellevurdert) 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.

sted, utgiver, år, opplag, sider
2012. Vol. 39, s. 77-88
HSV kategori
Forskningsprogram
Mineralteknik; Tillämpad geologi
Identifikatorer
URN: urn:nbn:se:ltu:diva-7421DOI: 10.1016/j.mineng.2012.07.016ISI: 000312119600013Scopus ID: 2-s2.0-84866870829Lokal ID: 5cce247c-91b5-4751-8805-3254c53177b3OAI: oai:DiVA.org:ltu-7421DiVA, id: diva2:980310
Merknad
Validerad; 2012; 20121005 (ysko)Tilgjengelig fra: 2016-09-29 Laget: 2016-09-29 Sist oppdatert: 2018-07-10bibliografisk kontrollert

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