PROCESS FOR EXTRACTING BITUMEN AND DRYING THE TAILINGS
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United States of America Patent
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Issued Date -
Aug 15, 2013
app pub date -
Aug 13, 2012
filing date -
Aug 12, 2011
priority date (Note) -
Abandoned
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Abstract
A process for separating bitumen from bitumen ore material includes extracting bitumen with a hydrocarbon solvent to produce a bitumen-enriched solvent phase and tailings. The tailings are dried or stripped in a dryer to remove any remaining hydrocarbon solvent. The amount of solvent discharged in the tailings may be less than 4 bbl per 1000 bbl of recovered bitumen.
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