论文信息 - Reduced dispersion using baffles in column flotation

Reduced dispersion using baffles in column flotation

An unsteady solute dispersion technique was used to characterise dispersion in a baffled flotation column. The practicality of the baffle shapes and spacings was tested using a synthetic ore comprised of uniform glass beads made suitably hydrophobic by treatment with silicone oil. A particular baffle shape (convex underside) produced significant reductions in experimental axial dispersion coefficients averaging 1000 cm2/min for superficial gas velocities ranging from 23 to 85 cm/min when compared with the unbaffled column. Steady-state experiments using a synthetic ore and modelled by a linear capture mechanism produced dispersion coefficients comparable with values obtained by unsteady solute dispersion tests.

A. D. Oliver | R. G. Rice | J. P. Newman | R. J. Wiles

[1] E. T. White,et al. Parameter estimation by the transfer function method , 1970 .

[2] T. Reith,et al. Gas hold-up and axial mixing in the fluid phase of bubble columns , 1968 .

[3] M. Michelsen,et al. On the use of the imperfect tracer pulse method for determination of hold-up and axial mixing† , 1969 .

[4] Parameter estimation by the weighted moments method , 1971 .

[5] Michael L. Michelsen,et al. The use of residence time distribution data for estimation of parameters in the axial dispersion model , 1970 .

[6] H. Inoue,et al. Longitudinal mixing of the liquid phase in bubble columns , 1970 .