Process for beneficiating oil-shale

Mineral oils: processes and products – Products and compositions – Lubricating oils

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423114, 423131, 423157, 4236585, C10G 104

Patent

active

044915136

ABSTRACT:
Disclosed is a process for removing mineral matter from oil-shale by contacting the oil-shale with (a) an ammonium salt solution and (b) an organic solvent, at a temperature from about 0.degree. C. to about 300.degree. C. for a time which is sufficient to substantially separate at least about 80 wt. % of the carbonate mineral matter from the oil-shale.

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patent: 3516787 (1970-06-01), Van Nordstrand
patent: 3642433 (1972-02-01), Dyni
patent: 3721730 (1973-03-01), Haas
patent: 3821353 (1974-06-01), Weichman
patent: 3859413 (1975-01-01), Haas
patent: 3962403 (1976-06-01), Wyslouzil
patent: 4176042 (1979-11-01), Fahlstrom
patent: 4250016 (1981-02-01), Estes et al.
patent: 4342729 (1982-08-01), Garcia Clavel et al.
patent: 4408999 (1983-10-01), Nadkarni et al.

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