METHOD FOR EXTRACTING BITUMEN FROM AN OIL SAND STREAM
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United States of America Patent
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Issued Date -
Aug 29, 2013
app pub date -
Feb 22, 2013
filing date -
Feb 24, 2012
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Abandoned
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Abstract
The present invention provides a method for extracting bitumen from an oil sand stream that includes the steps of: providing an oil sand stream; contacting the oil sand stream with a liquid comprising a solvent thereby obtaining a solvent-diluted oil sand slurry; separating the solvent-diluted oil sand slurry, thereby obtaining a solids-depleted stream and a solids-enriched stream; increasing the S/B weight ratio of the solids-enriched stream thereby obtaining a solids-enriched stream having an increased S/B weight ratio and a liquid stream; filtering the solids-enriched stream having an increased S/B weight ratio, thereby obtaining bitumen-depleted sand. In another embodiment, the invention is a system for practicing this method.
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