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Primary Examiner: Gantz, Delbert E.
Assistant Examiner: Boska, Joseph A.
Attorney:

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Title: Process for extracting bitumen from tar sands

Abstract: Bitumen is recovered from tar sand by extraction with a solvent. The bitumen solution is washed with water containing a cationic surfactant in order to remove sand fines therefrom.


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Inventors: Alquist, Henry E. (Bartlesville, OK, US)
Ammerman, Allen M. (McPherson, KS, US)

Application Number: 933346
Filing Date: 1978-08-14
Publication_date: 1980-10-21
Assignee: Phillips Petroleum Company (Bartlesville, OK)
Primary Class(es): 208/424 208/391, 208/435
Other Classes:
US Patent Ref:
2825677Mar, 1958Coulson208/11.
3117922Jan, 1964Leary et al.208/11.
3330757Jul, 1967Bichard208/11.
3422000Jan, 1969Bichard208/11.
3459653Aug, 1969Benson208/11.
3547803Dec, 1970Barkman et al.208/11.
4017377Apr, 1977Fairbanks et al.208/11.

Other Refs: Other References: "Encyclopedia of Chem. Tech.", vol. 19, Kirk-Othmer, pp. 544-566, (1969).
Surface-Active Agents, Rohm & Haas, pp. 1-7, (1968).