Device for separation of air from flotation slush

Details Device for separation of air from flotation slush Device for separation of air from flotation slush

1991-03-19

1992-03-10

Nozick, Bernard

Gas separation

Means within gas stream for conducting concentrate to collector

2105121, 209211, 554591, B01D 1902

Patent

active

050946749

ABSTRACT:
A device for separation of air from fiber suspensions of flotation devices which are heavily air- and foam-laden or represent a mixture of fluid and foam features a hydrocyclone whose inlet opening is arranged least 2.5 m below the outlet opening of the flotation device for the air-laden fluid or mixture. The separation section of the hydrocyclone is a slender, truncated cone-shaped body on whose pointed (thin) end the deaerated fluid is withdrawn. In this outlet opening there is a back pressure maintained, so that the inlet opening is not completely covered by the vortex of the fluid, leaving still a sufficiently free entrance cross section for the foam. Above the entrance section of the hydrocyclone a mechanical foam eliminator with a rotor is arranged, the rotor comprising an impeller wheel which is provided with radial blades. A funnel-shaped suction socket feeds the foam-air mixture to the impeller wheel.

REFERENCES:
patent: 4553990 (1985-11-01), Hoffman
patent: 4749490 (1988-06-01), Smyth et al.
patent: 4797203 (1989-01-01), Macierewicz

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