B - Operations – Transporting – 03 – D
Patent
B - Operations, Transporting
03
D
361/29
B03D 1/14 (2006.01) B03D 1/02 (2006.01)
Patent
CA 1307595
ABSTRACT OF THE DISCLOSURE An improved method and apparatus for froth flotation separation of the components of a slurry, having particular utility for the beneficiation of coal by the flotation separation of coal particles from impurities associated therewith such as ash and sulfur. In this arrangement, a forward product stream is formed in which a first quantity of chemical reagents is mixed with the particulate matter slurry. The treated particulate matter slurry is then sprayed through a nozzle onto the surface of water in a forward stream flotation tank to create a floating froth phase containing therein a first quantity of the particulate matter. The remainder of the particulate matter slurry separates from the froth phase by sinking in the water, and the froth phase is separated as a first product. The remainder of the particulate matter slurry is then directed to a scavenger product stream in which an additional quantity of chemical reagents is mixed with the remainder of the separated particulte matter slurry. The mixture is then sprayed through a second nozzle onto the surface of water in a second scavenger stream flotation tank to create a floating froth phase containing therein a second quantity of the particulate matter. The remainder of the particulate matter slurry separates from the second froth phase by sinking in the water, and the second froth phase is then separated as a second product. The amounts of the products recovered in the first and second product streams are substantially independently adjustable by controlling the amounts and types of chemical reagents added in each stream.
480565
Burgess Lester E.
Herman David E.
Mcgarry Phillip E.
Burgess Lester E.
Herman David E.
Mcfadden Fincham
Mcgarry Phillip E.
Sohio Alternate Energy Development Company
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