B - Operations – Transporting – 03 – D
Patent
B - Operations, Transporting
03
D
361/29
B03D 1/14 (2006.01) B03D 1/02 (2006.01) B03D 1/24 (2006.01) B04C 5/10 (2006.01)
Patent
CA 1178382
Abstract An apparatus and method for separating particles from a fluid, particulate suspension by flotation in a centrifugal field. The apparatus includes a vertically oriented, cylindrical vessel having a tangential inlet and a tangential outlet. The particulate suspension is introduced into the vessel through the inlet and swirls around the inner surface of the vessel in a thin fluid layer. Air is sparged through a porous wall formed in the vessel and into the thin fluid layer of the particulate suspension. Small bubbles are generated at the surfact of the porous wall. The directed motion of the particles in the thin layer of particulate fluid suspension results in a high probability for collision and a rapid flotation. The air bubbles and particles form bubble/particle aggregates which migrate towards the axial center of the apparatus and into a froth phase in the core of the apparatus. The particle-containing froth travels upwardly, countercurrently to the thin fluid layer, and is removed coaxially through a vortex finder.
415560
Gowling Lafleur Henderson Llp
University Of Utah Research Foundation
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