Method for extracting bitumen from an oil sand stream
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United States of America Patent
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Dec 6, 2016
Grant Date -
Jan 23, 2014
app pub date -
Jul 16, 2013
filing date -
Jul 17, 2012
priority date (Note) -
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Abstract
The present invention provides a method for extracting bitumen from an oil sand stream, the method including at least the steps of: (a) providing an oil sand stream; (b) contacting the oil sand stream with a liquid comprising a non-aqueous solvent thereby obtaining a solvent-diluted oil sand slurry; (c) screening the solvent-diluted oil sand slurry thereby obtaining a screened oil sand slurry and a rejects stream; (d) introducing the rejects stream into a liquid bath; (e) transporting the rejects stream through the liquid bath to a space above the surface of the liquid bath; and (f) extracting bitumen from the screened oil sand slurry obtained in step (c).
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