Column flotation method and apparatus

Details Column flotation method and apparatus Column flotation method and apparatus

B - Operations, Transporting

03

D

361/36

B03D 1/14 (2006.01) B03D 1/02 (2006.01) B03D 1/24 (2006.01)

Patent

CA 1329277

- 1 - ABSTRACT IMPROVED COLUMN FLOTATION METHOD AND APPARATUS A method and apparatus for the benefication of mineral ores by the flotation method whereby a slurry is introduced under pressure into the top of a fist 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 separate, the froth carrying the values floating 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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