Solid material comminution or disintegration – Apparatus – With separation or classification of material
Reexamination Certificate
2011-07-26
2011-07-26
Miller, Bena (Department: 3725)
Solid material comminution or disintegration
Apparatus
With separation or classification of material
C241S183000, C241S284000, C241S299000, C241SDIG038
Reexamination Certificate
active
07984866
ABSTRACT:
A relocatable oil sand slurry preparation system is provided for preparing an aqueous oil sand slurry amenable to pipeline conveyance while producing minimum overall rejects, comprising (a) a relocatable rotary digester for slurrying oil sand and water and digesting oil sand lumps to form a pumpable slurry, the rotary digester having a feed end for receiving oil sand and water, a slurrying chamber comprising a plurality of lifters for slurrying the oil sand and water, and a trommel screen end for screening out oversize rejects from the oil sand slurry which falls through the trommel screen; and (b) a relocatable rejects recirculation unit operably associated with the rotary digester for receiving oversize rejects and delivering the rejects back to the rotary digester for further digestion. In a preferred body, relocatable oil sand slurry preparation system further comprises a rejects crusher for crushing oversize rejects prior to delivering rejects back to the rotary digester.
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Cymerman George J.
Johnson Stewart Alexander
Obaia Khaled Helmy
Bennett Jones LLP
Canadian Oil Sands Limited
Canadian Oil Sands Limited Partnership
Conocophillips Oils Sands Partnership II
Imperial Oil Resources
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