Tar sands extraction process

Details Tar sands extraction process Tar sands extraction process

1995-06-06

1997-05-06

Caldarola, Glenn A.

Mineral oils: processes and products

Tar sand treatment with liquid

Inorganic liquid

C10G 104

Patent

active

056267436

ABSTRACT:
A hot water extraction process for extracting bitumen from tar sands is taught using a conditioning agent containing sodium and/or potassium bicarbonate or, alternatively, sodium bicarbonate and/or potassium bicarbonate and sources of calcium ions and/or magnesium ions. The conditioning agent replaces the caustic soda agent previously used in tar sand extraction. The use of the alkali metal bicarbonate solvent substantially eliminates the production of sludge in tar sand extraction and maintains or improves bitumen recovery. The process allows for hot conditioning agent solution to be recycled to the process by use of a recycle storage tank.

REFERENCES:
patent: 3951778 (1976-04-01), Willard, Sr.
patent: 4120777 (1978-10-01), Globus
patent: 4929341 (1990-05-01), Thirumalachar
patent: 4968413 (1990-11-01), Datta
"Oil Sands Extraction: A Dynamic Technology" J.A. Stone et al 1989-1990. no month available.
"Alternative Bitumen Extraction Technologies for Mined Oil Sand" Dynawest Projects Ltd 1982 table of contents & pertinent sections no month available.

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