B - Operations – Transporting – 03 – D
Patent
B - Operations, Transporting
03
D
B03D 1/02 (2006.01) B01D 17/035 (2006.01) B03C 1/30 (2006.01) B03D 1/14 (2006.01) B04C 3/06 (2006.01)
Patent
CA 2126311
2126311 9313863 PCTABS00024 A process for separating a mixture of immiscible solid and/or liquid particles in a slurry based on different physical, magnetic and/or chemical properties of the particles. The process comprises: (I) introducing a stream of the slurry into a vertically oriented, open top cylindrical chamber (12), the stream being introduced near the lower end at an incline and tangentially of the chamber to develop an upwardly directed spiral flow of the stream; (II) introducing the stream in sufficient volume and pressure to develop a vortex (80) in the slurry which extends downwardly from the chamber end (20); (III) introducing air into the stream through the chamber inner wall (68) during at least a portion of its upward travel; (IV) the chamber (12) being of a height sufficient to provide a residence time in the chamber which permits a separation of particles by means of centrifugal flotation, the stream developing into a whirlpool at the chamber upper end; (V) directing the whirlpool stream outwardly at the open end (20) into a catch basin (24) surrounding the open end, permitting the air bubbles to float toward a peripheral edge (28) of the catch basin; (VI) collecting outwardly floating air bubbles with lighter hydrophobic particles from an upper zone of the catch basin, while the heavier particles sink from a lower zone of the catch basin to effect the separation.
Duczmal Tomasz
Schneider Jakob H.
Gowling Lafleur Henderson Llp
Zpm Inc.
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