Enhanced bitumen flotation

Details Enhanced bitumen flotation Enhanced bitumen flotation

2007-02-09

2010-06-01

Hill, Jr., Robert J (Department: 1797)

Mineral oils: processes and products

Tar sand treatment with liquid

C208S391000, C209S162000, C209S163000, C209S164000, C209S171000

Reexamination Certificate

active

07727385

ABSTRACT:
A method and apparatus for recovering bitumen as froth from a feed stream having solids, water and bitumen is provided using a separating vessel having mounted thereon a downpipe assembly, the downpipe assembly having at least one downpipe and a nozzle in fluid communication with each downpipe, for aerating a stream of middlings withdrawn from the separating vessel and reintroducing the aerated middlings back to the separating vessel.

REFERENCES:
patent: 4545892 (1985-10-01), Cymbalisty et al.
patent: 4968413 (1990-11-01), Datta et al.
patent: 5332100 (1994-07-01), Jameson
patent: 1248476 (1989-01-01), None
patent: 2015784 (1991-10-01), None
patent: 1329277 (1994-05-01), None
patent: 2217623 (1999-04-01), None
Cowburn, J. et al., Design Developments of the Jameson Cell, Centenary of Flotation 2005 Symposium, Brisbane, Jun. 5-9, 2005.

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