Solvent extraction of tar sand

Details Solvent extraction of tar sand Solvent extraction of tar sand

1977-10-12

1979-02-13

Levine, Herbert

Mineral oils: processes and products

Products and compositions

Lubricating oils

C10G 104

Patent

active

041394500

ABSTRACT:
An extraction process for recovering bitumens from tar sands in which the tar sand is mixed with a hot hydrocarbon solvent, for example, toluene, in order to evaporate substantially all the water contained in the tar sands. The tar sands-solvent mixture is then separated into two phases of fine and coarse sand. Two centrifuging steps are then used to recover the bitumen from the fine sand phase.

REFERENCES:
patent: 3161581 (1964-12-01), Tiedje et al.
patent: 3553099 (1971-01-01), Savage et al.
patent: 3808120 (1974-04-01), Smith
patent: 3929193 (1975-12-01), Duke

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