Apparatus and method for froth flotation separation of the compo

Details Apparatus and method for froth flotation separation of the compo Apparatus and method for froth flotation separation of the compo

1981-01-29

1982-08-31

Hill, Ralph J.

Classifying, separating, and assorting solids

Fluid suspension

Liquid

209168, 210706, 2102212, B03D 102, B03D 114

Patent

active

043471277

ABSTRACT:
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 primary spray nozzle is positioned above a flotation tank having a water bath therein, and sprays an input slurry through an aeration zone into the surface of the water. The spraying operation creates a froth on the water surface in which a substantial quantity of particulate matter is floating, while other components of the slurry sink into the water bath. A skimming arrangement skims the froth from the water surface as a cleaned or beneficiated product. Moreover, a recycling operation is provided wherein particulate materials which do not float after being sprayed through the primary spray nozzle are recycled to a further recycle spray nozzle to provide a second opportunity for recovery of the recycled particles.

REFERENCES:
patent: 2416066 (1947-02-01), Phelps
patent: 2983377 (1961-05-01), Singleton
patent: 3015396 (1962-01-01), Quast
patent: 3400818 (1968-09-01), Tarjan
Perry, Ed., Chemical Engineers Handbook, McGraw-Hill, NY, NY, 1963, pp. 18-63, 18-68.
Bull. No. KSB 123-7909, Komline-Sanderson, Peapack, NJ 9/79.
Dwg. No. 7120, Spraying Systems Co., Wheaton, Ill. 12/73.

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