Abstract
The aeration characteristics of several laboratory flotation machine impellers have been studied paying special attention to the pressure generated by impeller rotation. Correlations have been established between pressure (or Euler) number and Reynolds number, pressure ratio and air flow number, and these correlations have been compared with the conventional power correlations. Aeration and addition of frother affect both the power and the pressure generated by the rotating impeller; both decrease with increasing frother concentration, although in the low-impeller-speed region at relatively high frother concentrations the decrease in pressure is more pronounced than the decrease in power. Possible applications are mentioned and suggestions for further work are made.
Published Version
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