Solvent extraction of tar sand

Details Solvent extraction of tar sand Solvent extraction of tar sand

C - Chemistry, Metallurgy

10

G

196/25

C10G 1/04 (2006.01)

Patent

CA 1107670

SOLVENT EXTRACTION OF TAR SAND Abstract of the Disclosure An extraction process for recovering bitumens from tar sands in which the tar sand is mixed with a hot hydrocarbon sol- vent, 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 said phase.

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