Two-stage tar sands extraction process

Details Two-stage tar sands extraction process Two-stage tar sands extraction process

1983-01-19

1986-06-24

Metz, Andrew H.

Mineral oils: processes and products

Tar sand treatment with liquid

208 45, C10G 100, C10C 118, C10C 308

Patent

active

045966516

ABSTRACT:
A process for extracting bitumen from tar sands comprises a two-stage extraction wherein both specific and non-specific solvents are used to obtain a bitumen product low in fines and asphaltenes.

REFERENCES:
patent: 3475318 (1969-10-01), Gable et al.
patent: 3779902 (1973-12-01), Mitchell et al.
patent: 3867275 (1975-02-01), Gleim et al.
patent: 3941679 (1976-03-01), Smith et al.
Mitchell et al., "Hydrocarbon Solvents," Fuel, vol. 52, pp. 149-152, (1973).

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