Classifying – separating – and assorting solids – Fluid suspension – Liquid
Patent
1995-04-04
1995-11-21
Lithgow, Thomas M.
Classifying, separating, and assorting solids
Fluid suspension
Liquid
2102212, B03D 124
Patent
active
054678765
ABSTRACT:
Apparatus and method for the separation of components of a slurry by froth flotation are provided. The apparatus includes a flotation column having a slurry feed for introducing slurry into the flotation column, a bubble generator for generating bubbles of gas at the bottom of the flotation column and a froth overflow at the top of the flotation column for collecting and discharging a froth fraction of the slurry. The central portion of the flotation column includes a plurality of vertically-spaced tail ports disposed alternately on opposite sides of the flotation column for discharging a non-float fraction of the slurry. In addition, a single, fluid-impermeable baffle having at least two edges is associated with each tail port. The baffles are of sufficient size to block the vertical flow in at least 50% of the horizontal cross-sectional area of the flotation column to thereby create a quiescent flow zone in the area of each tail port, wherefrom the non-flotable fraction of the slurry is removed.
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Cornell William L.
Hicks Gary W.
Koltos E. Philip
Lithgow Thomas M.
The United States of America as represented by the Secretary of
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