Froth flotation column

Details Froth flotation column Froth flotation column

1989-07-20

1990-07-10

Lacey, David L.

Classifying, separating, and assorting solids

Fluid suspension

Liquid

209170, 261 93, B03D 116, B03D 122, B03D 124

Patent

active

049405349

ABSTRACT:
A flotation chamber separates fine kaolin particles or the like by flotation out of a slurry. A generally cylindrical column has an inlet for injecting slurry into the column, a froth launder at an upper end of the column, and a tailings outlet at the lower end of the column. A draft tube is vertically oriented within the column and has upper and lower open ends. A sparger within the draft tube injects air into the slurry within the draft tube, and a rotary impeller immediately above the top end of the draft tube produces a fine bubble in the slurry and permits quiescent zones in the slurry above and below the position of the impeller. Aeration of the slurry supplied to the impeller lowers power draw.

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