Syncrude Canada Ltd.

Syncrude Canada Ltd. in Trust for the Owners of the Syncrude Project As Such Owners Exist Now and in the Future

Jim Lorentz

Jonathan Spence

Barry Bara

Darwin Edward Kiel

Simon Yuan

Trevor Lloyd Hilderman

Randy Mikula

Kamal Hammad

Chadwick Robert Larson

Jessica Vandenberghe

Jiwon Lee

Chadwich Robert Larson

Rick Lahaie

Richard Daniel Lahaie

Christian Matte

Brent Hilscher

Robert Cameron

A process for dewatering oil sands tailings is provided, comprising providing a tailings feed having a solids content in the range of about 10 wt % to about 45 wt %; adding a flocculant to the tailings feed and mixing the tailings feed and flocculant to form flocs; and centrifuging the flocculated tailings feed to produce a centrate having a solids content of less than about 3 wt % and a cake having a solids content of at least about 50 wt %.

Centrifuge process for dewatering oil sands tailings

A feedwell for a gravity separation vessel for introducing a feed stream such as oil sand slurry to the gravity separation vessel is provided comprising a walled member having an upper perimeter edge, a lower perimeter edge and a substantially continuous wall extending from the upper perimeter edge to the lower perimeter edge; an inlet for introducing the feed stream into the walled member positioned adjacent the substantially continuous wall; and a bottom floor having an opening and extending generally beneath the lower perimeter edge; whereby a perimeter of the opening is less than a perimeter of the walled member.

Feedwell for a gravity separation vessel

The invention is directed to a process for separating bitumen froth into an upper bitumen-rich, reduced-solids layer, and a lower concentrated solids layer using a cone-bottomed, raked froth tank. The process involves introducing bitumen froth into the froth tank; rotating at least one movable picket through the bitumen froth; recovering the upper bitumen-rich, reduced-solids layer; and withdrawing the lower concentrated solids layer from the tank.

Bitumen froth storage and separation using an improved froth tank

A process and process line is provided for recovering heat in the form of cleaned warm water and residual bitumen from oil sand tailings produced during an oil sands extraction process. The process includes removing at least a portion of the coarse solids from the oil sand tailings to produce a reduced solids tailings fraction; separating at least a portion of the bitumen from the reduced solids tailings fraction to produce a bitumen fraction and a warm water and fines fraction; and removing at least a portion of the fines from the warm water and fines fraction to produce cleaned warm water and a concentrated fines fraction. The cleaned warm water can then be reused in the oil sands extraction process.

Bitumen and thermal recovery from oil sand tailings

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Fort McMurray, Canada

Jim Lorentz