Solvent extraction of tar sand

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Publication Type patent
Author Hanson, Donald O.; Sherk, Fred T.
Title Solvent extraction of tar sand
Date 1979-02-13
Description 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.
Publisher United States Patent and Trademark Office
Subject solvent extraction process; tar sand; bitumen recovery
Bibliographic Citation Hanson, D. O., Sherk, F. T. (1979). Solvent extraction of tar sand. United States Patent 4,139,450. United States Patent and Trademark Office.
Relation Has Part United States Patent 4,139,450
ARK ark:/87278/s63n52kb
Setname ir_eua
Date Created 2015-02-17
Date Modified 2021-05-06
ID 214444
Reference URL
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