Froth flotation

Details Froth flotation Froth flotation

B - Operations, Transporting

03

D

B03D 1/06 (2006.01)

Patent

CA 2361907

A method of froth flotation includes the steps of providing a fine particulate material, producing a pulp of the material, and contacting the pulp with gas bubbles, generally air, such that a desired phase or component is either selectively attached to the bubbles or selectively left behind in the pulp. The method is characterised by passing the gas bubbles through a perforated barrier which allows selective passage of the gas bubbles, including gas bubbles to which particles are attached. The perforations will typically be round with a diameter corresponding to between 0,5 and 3 mean bubble diameters, and more typically between 0,8 and 1,5 mean bubble diameters. Generally, the barrier, which may be in the form of a plate, will have a thickness of no less than 1,5 mean bubble diameters and more typically no less than 2 mean bubble diameters.

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