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Bitumen recovery from tar sands

Patent ·
OSTI ID:6320010
;

A process for recovering bitumen from tar sands wherein the tar sands are pretreated with a diluent, such as kerosene in the preferred embodiment, to lower the viscosity of the bitumen such that it is in the range of about 5 to about 20 poise at the digestion temperature. The tar sands are then digested at a temperature in the range of about 45/sup 0/ C. to about 60/sup 0/ C. and at a pH of about 7.8 to about 8.6. The tar sands are then transferred to a flotation cell where the bitumen-rich concentrate is separated from the sand.

Assignee:
University of Utah
Patent Number(s):
US 4470899
OSTI ID:
6320010
Country of Publication:
United States
Language:
English

Similar Records

Importance of bitumen viscosity in the hot water processing of domestic tar sands
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Ambient froth flotation process for the recovery of bitumen from tar sand
Patent · Mon Jan 09 23:00:00 EST 1984 · OSTI ID:6800448
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Related Subjects

04 OIL SHALES AND TAR SANDS
040402* -- Oil Shales & Tar Sands-- Surface Methods
BITUMENS
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
DILUTION
ENERGY SOURCES
FLOTATION
FLUID INJECTION PROCESSES
FOSSIL FUELS
FUELS
HOT-WATER PROCESSES
KEROSENE
LIQUID FUELS
MATERIALS
MEDIUM TEMPERATURE
OIL SANDS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
PH VALUE
PRODUCTION
REMOVAL
SEPARATION PROCESSES
TAR
TEMPERATURE EFFECTS
VISCOSITY