Bitumen recovery from tar sands

Patent · Tue Sep 11 00:00:00 EDT 1984

OSTI ID:6320010

Miller, J D; Hupka, J

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
• Resource Relation: Patent File Date: Filed date 14 Feb 1983; Other Information: PAT-APPL-466282
• Country of Publication: United States
• Language: English

Related Subjects

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