Flotation Selectivity of Phosphate Ore: Effects of Particle Size and Reagent Concentration

The flotation selectivity of apatite particles from a carbonatite complex was investigated in a flotation column as a function of particle size and reagent concentrations. Experiments were performed according to a factorial experimental design. Fine and coarse particles showed different sensitivitie...

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Bibliographic Details
Published inSeparation science and technology Vol. 46; no. 9; pp. 1511 - 1518
Main Authors Santana, R. C., Duarte, C. R., Ataíde, C. H., Barrozo, M. A. S.
Format Journal Article
LanguageEnglish
Published Taylor & Francis Group 01.09.2011
Subjects
Apatite
Carbonates
column flotation
Factorials
Flotation
granulometric effect
Particle size
Phosphates
Selectivity
Separation
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Summary:The flotation selectivity of apatite particles from a carbonatite complex was investigated in a flotation column as a function of particle size and reagent concentrations. Experiments were performed according to a factorial experimental design. Fine and coarse particles showed different sensitivities to variations in the concentration of the reagent. Coarser particles showed a higher selectivity ratio and greater sensitivity to the addition of different reagent dosages, providing a more selective separation and a better quality product. Finer particles presented lower selectivity ratios, reflecting the difficulty involved in the concentration process with this particle size.
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ISSN:0149-6395
1520-5754
DOI:10.1080/01496395.2011.561268