Solids loading and grade on mineral froth bubble lamellae

E. Ventura-Medina, N. Barbian, J.J. Cilliers

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

This work describes the effect of flotation operational variables on the solids loading in bubble lamellae on the surface of flotation froths. For this purpose, a series of industrial experiments in two copper concentrators were carried out to sample the solids in the bubble films under different steady state operating conditions. Samples of the lamellae were taken by touching the top surface of the bubbles with a glass slide. The amount of solids per unit area in the bubble lamellae was determined gravimetrically and by image analysis. Also, the grade of the solids in the bubble lamellae was measured. The operational variables under study were air flowrate, froth depth and frother concentration and were varied to allow statistical interpretation of the results. It was found that the solids loading in bubble lamellae decreases when increasing the air flowrate and increases with an increase in the froth depth. There were no clear trends in the solids loading when varying frother concentration alone although its interaction with other variables is statistically significant. The grade of the bubble lamellae measured was almost constant under different operating conditions.
LanguageEnglish
Pages189-200
Number of pages12
JournalInternational Journal of Mineral Processing
Volume74
Issue number1-4
Early online date1 Jan 2004
DOIs
Publication statusPublished - 19 Nov 2004

Fingerprint

Minerals
bubble
mineral
Flotation
Air
Image analysis
air
Copper
image analysis
glass
Glass
copper
Experiments
experiment

Keywords

  • solids loading
  • froths
  • bubble
  • lamellae

Cite this

Ventura-Medina, E. ; Barbian, N. ; Cilliers, J.J. / Solids loading and grade on mineral froth bubble lamellae. In: International Journal of Mineral Processing. 2004 ; Vol. 74, No. 1-4. pp. 189-200.
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Solids loading and grade on mineral froth bubble lamellae. / Ventura-Medina, E.; Barbian, N.; Cilliers, J.J.

In: International Journal of Mineral Processing, Vol. 74, No. 1-4, 19.11.2004, p. 189-200.

Research output: Contribution to journalArticle

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