Improved hydroseparation process for aqueous extraction of bitum

Details Improved hydroseparation process for aqueous extraction of bitum Improved hydroseparation process for aqueous extraction of bitum

1974-10-21

1976-04-20

Gantz, Delbert E.

Mineral oils: processes and products

Products and compositions

Lubricating oils

C10G 104

Patent

active

039517799

ABSTRACT:
A method for improving recovery in a hot water process for extracting bitumen from tar sands comprising adding bitumen-depleted middlings recovered from a scavenger zone to the sand layer in a primary extraction vessel at a point below the surface of the sand.

REFERENCES:
patent: 3401110 (1968-09-01), Floyd et al.
patent: 3487003 (1969-12-01), Baillie et al.
patent: 3509037 (1970-04-01), Tse
patent: 3530042 (1970-09-01), Graybill et al.
patent: 3558469 (1971-01-01), White et al.
patent: 3607720 (1971-09-01), Paulson

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