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Pulp chemistry in industrial mineral flotation: Studies of surface complex on calcite and apatite surfaces using FTIR spectroscopy
Luleå University of Technology.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.
1989 (English)In: Mining engineering, ISSN 0026-5187, Vol. 2, no 2, p. 217-227Article in journal (Refereed) Published
Abstract [en]

Flotation experiments in a Hallimond tube have been performed on calcite and apatite at pH levels and oleate concentrations judged to be interesting from the point of view of adsorption isotherms. For the calcite system, adsorption isotherms indicate precipitation of calcium oleate after monolayer formation at pH 9, 10 and 11. In the apatite system, a double layer of oleate is formed. This means that apatite, unlike calcite, is sensitive to collector reagent overdosage. With the aid of FTIR techniques it is possible to demonstrate the existence of a surface complex in the apatite system with a calcium-oleate ratio of 1:1 at monolayer coverage of the surface. In conditions corresponding to bulk precipitation of calcium oleate, this compound can be detected by FTIR analysis of unfloated material.

Place, publisher, year, edition, pages
1989. Vol. 2, no 2, p. 217-227
National Category
Metallurgy and Metallic Materials
Research subject
Mineral Processing
Identifiers
URN: urn:nbn:se:ltu:diva-3498DOI: 10.1016/0892-6875(89)90042-3ISI: A1989AE91300006Scopus ID: 2-s2.0-0024906506Local ID: 1544c5c0-af98-11db-8a07-000ea68e967bOAI: oai:DiVA.org:ltu-3498DiVA, id: diva2:976356
Note
Godkänd; 1989; 20070129 (pafi)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Forssberg, Eric

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