Defrothing method and apparatus

Details Defrothing method and apparatus Defrothing method and apparatus

1987-10-21

1989-04-04

Lacey, David L.

Classifying, separating, and assorting solids

Fluid suspension

Liquid

209 10, 209168, 210188, 2102211, 210703, 210788, 55 87, 55178, B03D 110, B10D 1902

Patent

active

048183776

ABSTRACT:
A defrothing apparatus whose inlet opening of the foamed liquid contained in a foam duct of a primary flotation apparatus is provided in the bottom of the foam duct. Starting from the lower area of the defrothing apparatus, a rotary flow (potential vortex) is generated in the apparatus by a recirculated lqiuid quantity from a secondary flotation apparatus. In the core of the rotary flow the gas quantity (air) is collected and removed through a removal pipe. Consequently, the foamed liquid from the foam duct of the primary flotation stage which is pumped to the secondary flotation stage contains small shares of gas relative to the total quantity of liquid, thereby allowing the pump to be optimally sized of efficiency and better control of the system.

REFERENCES:
patent: 2765867 (1956-10-01), Revaller
patent: 3669883 (1972-06-01), Huckstedt
patent: 4475932 (1984-10-01), Hull
patent: 4708793 (1987-11-01), Cathriner

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