The use of grey level measurement in predicting coal flotation performance

J. M. Hargrave, N. J. Miles, S. T. Hall

Research output: Journal PublicationArticlepeer-review

40 Citations (Scopus)


It has long been accepted that the texture of a froth is generally a good qualitative indicator as to the performance of the flotation process. During investigation into quantifying froth textures by image analysis, it was observed that the grey level of a coal froth can provide significant information. The grey level showed correlations with flotation performance (e.g. ash content and froth mass flows rates) for both a single flotation cell and a bank of four pilot-scale cells. However, the two systems showed distinct differences in the texture of the froth surfaces. Testwork demonstrated that the effect of varying background illumination had a negligible effect on the results.

Original languageEnglish
Pages (from-to)667-674
Number of pages8
JournalMinerals Engineering
Issue number6
Publication statusPublished - Jun 1996
Externally publishedYes


  • Coal
  • Flotation froths
  • Froth flotation
  • Modelling
  • Process control

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Chemistry (all)
  • Geotechnical Engineering and Engineering Geology
  • Mechanical Engineering


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