Flotation separation apparatus and method
AssigneeDorr-Oliver Incorporated
InventorsGeorge A. Lawrence, Michael J. Prevett, Eugene L. Smith
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Abstract
A flotation separation cell is disclosed having a rotor-stator pump assembly wherein a rotor body comprises integrally formed hub, blade and top plate members. These members form a gas chamber in an upper sector of the rotor. The blades are curvilinear and of parabolic or vortex shape. A gas stream which is conveyed to the gas chamber is discharged from the gas chamber in a transverse direction and flows in gas pockets along surfaces of moving blades for dispersion in a slurry.
Claims5
A rotor and stator assembly for use in a flotation cell comprising:
- (a) a stator comprising an annular array of vertical stationary stator blade members having lower edge portions spaced from the cell bottom and having leading edge portions defining a central cavity,
- (b) a rotor body positioned within said cavity and provided with a plurality of rotor blades each having a curvilinear periphery conforming to a parabolic or vortex segment configuration,
- (c) said leading edge portions of said stator blades conforming in configuration and spaced radially from the periphery of said rotor blades at a substantially constant value along the corresponding length of said stator and rotor blades
- and
- (d) said rotor blades extending downwardly in said central cavity a substantial distance beyond said lower edge of said stator blades.
A rotor body for use in a stator body of flotation separation cells, said rotor comprising:
- (a) an axially elongated cylindrically shaped hub member having a longitudinal axis which is closed at first and second opposite ends thereof and having a length extending for about 3/4 of the length of said rotor,
- (b) a plurality of rotor blades mounted to said hub and extending in a first transverse direction to said longitudinal axis and in a second axial direction beyond the hub at said first end thereof, and
- (c) an annular top plate mounted to the extending upper portions of said blades and having an aperture therein coincident with the upper end of said hub for introducing a gas into a chamber formed by the said upper portion of said blades and said upper end of said hub.
Dependencies are inferred from the claim text.