Mineral oils: processes and products – Tar sand treatment with liquid
Reexamination Certificate
2004-04-12
2009-08-04
Caldarola, Glenn (Department: 1797)
Mineral oils: processes and products
Tar sand treatment with liquid
C208S428000
Reexamination Certificate
active
07569137
ABSTRACT:
Processes and apparatus for the treatment of product streams from mineral processing operations, including the treatment of tailings which result from oil sand processing operations. The processes and apparatus relate to the recovery of a diluent solvent from bitumen froth tailings and to the thickening of tailings from a bitumen froth stream and a middlings stream resulting from an oil sand extraction process. In one aspect the processes and apparatus relate particularly to the recycling of product streams to maximize process efficiencies. In a second aspect the processes and apparatus relate particularly to the thickening of tailings to produce an underflow component, a clarified overflow component and an unclarified overflow component.
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Bartlett Douglas Robert
Grant Chris L.
Hindle W. Scott
Hyndman Alexander William
Ringstrom John Patrick
Boyer Randy
Caldarola Glenn
Fort Hills Energy L.P.
Sheridan & Ross P.C.
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