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Experimental testing of the hydrodynamic collision model of fine particle flotation
Author(s) -
Reay David,
Ratcliff G. A.
Publication year - 1975
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450530504
Subject(s) - collision , bubble , zeta potential , particle (ecology) , particle size , mechanics , materials science , range (aeronautics) , chemistry , composite material , physics , nanotechnology , nanoparticle , geology , computer science , oceanography , computer security
Flotation rates of glass beads and of latex particles have been measured as a function of particle size using very small bubbles. With glass beads the observed rate versus size relationship agreed quite well with the prediction of a simple hydrodynamic collision model, but that found with latex particles did not. It is suggested that electrical forces may have to be taken into account when the particles have a significant zeta potential. With both types of particle, the relationship between flotation rates measured at two different bubble sizes is consistent with the model's predictions.