	US 12,220,711 B2
	Flotation separation of fine coal particles from ash-forming particles
James S. Swensen, Santa Barbara, CA (US); Simon K. Hodson, Santa Barbara, CA (US); and Jonathan K. Hodson, Santa Barbara, CA (US)
Assigned to Omnis Mineral Technologies, LLC, Santa Barbara, CA (US)
Filed by Omnis Mineral Technologies, LLC, Santa Barbara, CA (US)
Filed on Jun. 23, 2020, as Appl. No. 16/909,452.
Application 16/909,452 is a division of application No. 14/495,657, filed on Sep. 24, 2014, abandoned.
Prior Publication US 2020/0316614 A1, Oct. 8, 2020
Int. Cl. B03D 1/02 (2006.01); B03D 1/14 (2006.01); B03D 1/24 (2006.01); C10L 1/32 (2006.01); C10L 5/04 (2006.01); C10L 5/36 (2006.01); C10L 9/00 (2006.01)

CPC B03D 1/025 (2013.01) [B03D 1/028 (2013.01); B03D 1/1456 (2013.01); B03D 1/24 (2013.01); C10L 1/326 (2013.01); C10L 5/04 (2013.01); C10L 5/366 (2013.01); C10L 9/00 (2013.01); B03D 2203/08 (2013.01); C10L 2250/06 (2013.01); C10L 2290/54 (2013.01)]

11 Claims

1. A coal-froth product and a tailings product made simultaneously from an aqueous slurry of solid coal fines, wherein the solid coal fines consist of discrete particles of coal and discrete particles of ash-forming mineral content having an average particle size less than 40 μm, wherein the coal-froth product comprises bubbles and a solids content of at least 15 wt. % and contains predominantly particles of coal representing a combustible recovery of at least 90% relative to the discrete particles of coal present in the aqueous slurry of solid coal fines, and wherein the tailings product has a solids content containing predominantly particles of ash-forming mineral content.