Direct measurements of particle-bubble interactions.
The essence of mineral flotation is the formation of strong particle-bubble aggregates. Hydrodynamics and DLVO forces hinder the particle-bubble approach, however the presence of a hydrophobic surface results in hydrophobic attraction and strong aggregate formation. In this article we review literature where the colloid probe technique has been used to investigate flotation, primarily particle-bubble interactions in aqueous solution. In some instance particles-bubble interactions have used to quantify the hydrophobic force, whilst hydrophobic forces are crucial for particle-bubble attachment, studies of hydrophobic forces are not the main focus of this article.
Gillies
Graeme
G
Max-Planck-Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany.
Kappl
Michael
M
Butt
Hans-Jürgen
HJ
D003102:Colloids / Q000737:chemistry*; D005740:Gases; D018625:Microscopy, Atomic Force / Q000379:methods*; D010316:Particle Size; D010825:Physics / Q000379:methods; D013499:Surface Properties
D003102:Colloids; D005740:Gases