Flotation separation of fine coal particles from ash-forming particles

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12220711
APP PUB NO 20200316614A1
SERIAL NO

16909452

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Abstract

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Coal fines are processed by flotation separation to separate coal particles from ash-forming mineral content particles. Coal fines are mixed water under high shear mixing conditions to form an aqueous slurry of coal fines containing between 15 wt. % and 55 wt. % coal fines. The aqueous slurry is introduced into a coal flotation cell to separate coal particles from ash-forming mineral content particles by flotation separation, wherein the coal fines have a particle size less than 100 μm, and more preferably less than 50 μm. Bubbles are generated in the coal flotation cell having a bubble size and bubble quantity selected to float the coal particles and to form a coal-froth containing at least 15 wt. % solid particles. The solid particles include coal particles and ash-forming mineral content particles. The coal-froth is collected for further processing.

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Patent Owner(s)

  • OMNIS MINERAL TECHNOLOGIES, LLC

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hodson, Jonathan K Santa Barbara, US 6 27
Hodson, Simon K Santa Barbara, US 134 7974
Swensen, James S Santa Barbara, US 21 62

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