Method and apparatus for concentration of minerals by froth flot

Details Method and apparatus for concentration of minerals by froth flot Method and apparatus for concentration of minerals by froth flot

1995-09-18

1996-09-03

Lithgow, Thomas M.

Classifying, separating, and assorting solids

Fluid suspension

Liquid

209170, B03D 102

Patent

active

055515746

ABSTRACT:
A 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-florable fraction of the slurry is removed.

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