REMOVING BITUMEN FROM TAR SANDS WITH A DOUBLE SOLVENT MIXTURE COMPRISING AN OXYGENATED SOLVENT AND A PETROLEUM DISTILLATE

摘要

A method of removing bitumen from tar sands comprising contacting the tar sands with a first mixture comprising a petroleum distillate and an oxygenated solvent, and recovering a second mixture comprising (a) at least a portion of the petroleum distillate and oxygenated solvent from the first mixture, (b) bitumen and (c) sand having a reduced amount of bitumen.