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Mechanism of fatty acid adsorption in salt-type mineral flotation
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.
1991 (English)In: Minerals Engineering, ISSN 0892-6875, E-ISSN 1872-9444, Vol. 4, no 7, p. 879-890Article in journal (Refereed) Published
Abstract [en]

Our recent studies on the interaction of oleate with salt-type mineral surfaces have been summarized based on adsorption, infrared and zeta-potential measurements. Monolayer coverage in the case of calcite and a bilayer formation in the cases of fluorite, apatite and scheelite, preceding the precipitation of calcium soap has been suggested for the adsorption mechanism of oleate on these minerals. The monolayer coverage is shown to correspond to a condensed state of oleate with a molecular coverage area of 33 A2 (liquid-crystal state). Depending on the surface potential and its magnitude at basic pH values, oleate is either chemisorbed on the surface calcium or monocoordinated through counter sodium and calcium ions for the monolayer filling.

Place, publisher, year, edition, pages
1991. Vol. 4, no 7, p. 879-890
National Category
Metallurgy and Metallic Materials
Research subject
Mineral Processing
Identifiers
URN: urn:nbn:se:ltu:diva-4758DOI: 10.1016/0892-6875(91)90071-3Scopus ID: 2-s2.0-0025894622Local ID: 2bfb9b80-b1dd-11db-bf9d-000ea68e967bOAI: oai:DiVA.org:ltu-4758DiVA, id: diva2:977632
Note
Godkänd; 1991; 20070201 (pafi)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Rao, K. HanumanthaForssberg, Eric

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