Classifying – separating – and assorting solids – Fluid suspension – Liquid
Patent
1992-10-27
1994-07-26
Lithgow, Thomas M.
Classifying, separating, and assorting solids
Fluid suspension
Liquid
209168, 209170, 210703, 261 361, 261DIG75, 261DIG26, B03D 102, B03D 124
Patent
active
053321006
ABSTRACT:
A method for the beneficiation of mineral ores by the flotation method whereby a slurry is introduced under pressure into the top of a first column through a downwardly facing nozzle, and air is entrained into the slurry forming a downwardly moving foam bed in the first column. The foam bed passes from the bottom of the first column into a second column where the froth and liquid separate, the froth carrying the values floating upwardly and over a weir and the liquid being drained with the gangue. The liquid/froth interface level in the second column is kept above the bottom of the first column, and the air flow rate into the top of the first column is controlled to keep the first column substantially full of foam.
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Lithgow Thomas M.
The University of New Castle Research Associates Limited of Univ
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