Mineral oils: processes and products – Products and compositions – Lubricating oils
Patent
1978-06-28
1979-11-13
Levine, Herbert
Mineral oils: processes and products
Products and compositions
Lubricating oils
C10G 104
Patent
active
041742630
ABSTRACT:
Bitumen is separated from tar sands by contacting the tar sands with a small amount of liquid, heating the liquid treated tar sands to expand the liquid as a vapor thereby reducing the density of the bitumen and separating the bitumen from the remainder of the tar sands on the basis of density.
REFERENCES:
patent: 3203888 (1965-08-01), Butler et al.
patent: 3401110 (1968-09-01), Floyd et al.
patent: 3542666 (1970-11-01), Simpson
patent: 3573195 (1971-03-01), Bowman et al.
patent: 3573196 (1971-03-01), Cymbalisty
patent: 3941679 (1976-03-01), Smith et al.
Alford Harvey E.
Veatch Franklin
Hill Gwenetta Douglas
Kemmer Sherman J.
Knudsen Herbert D.
Levine Herbert
Standard Oil Company
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