Recovery of bitumen from tar sand

Details Recovery of bitumen from tar sand Recovery of bitumen from tar sand

1978-11-20

1981-02-10

Levine, Herbert

Mineral oils: processes and products

Products and compositions

Lubricating oils

208289, C10G 104, C10G 2908

Patent

active

042500168

ABSTRACT:
A process for recovering bitumen, or heavy petroleum, from admixture with sand and similar inorganic materials wherein said bitumen-sand mixture is mixed with an aqueous solution of an ammonium salt selected from ammonium sulfite, ammonium bisulfite and mixtures thereof to form a second mixture comprising said aqueous ammonium salt solution, bitumen and sand; wherein said second mixture is heated to a temperature in the range of about 120.degree. F. (45.degree. C.) to about 260.degree. F. (127.degree. C.) and is separated into a bitumen phase free of sand, an aqueous phase and a sand phase.

REFERENCES:
patent: 3607720 (1971-09-01), Paulson
patent: 3930988 (1976-01-01), Johnson
patent: 3953317 (1976-04-01), Myers

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