High throughput flotation column process

Details High throughput flotation column process High throughput flotation column process

1993-02-17

1994-05-03

Lithgow, Thomas M.

Classifying, separating, and assorting solids

Fluid suspension

Liquid

209 1, 209166, 209170, B03B 1300, B03D 102, B03D 124

Patent

active

053079370

ABSTRACT:
A high efficiency method for the recovery of relatively coarse constituent utilizing a flotation column is provided. The method broadly includes the steps of (1) establishing and maintaining a net upward flow of water (negative bias) through the upper portion of the flotation column which is maintained below a predetermined critical limit; (2) establishing and maintaining an upwardly moving stream of diffuse air which is introduced at the lower portion of the flotation column and which has a superficial air velocity between about 0.5 and 2.0 cm/sec.; (3) introducing a feed stream comprising a slurry of the ore into the upper portion of the flotation column wherein the mineral particles therein substantially range between about 20 mesh (840 microns) and about 325 mesh (44 microns) in size; (4) establishing and maintaining the percent solids in the flotation column between about 35 and 50%; (5) establishing and maintaining column throughput of the slurry between 1.8 and 4.0 tons/hour/sq. ft.; and (6) recovering the desired mineral particles from the upper portion of the flotation column.

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