B - Operations – Transporting – 03 – B
Patent
B - Operations, Transporting
03
B
196/20, 259/42.2
B03B 9/02 (2006.01) B01F 5/00 (2006.01) B01F 5/02 (2006.01) B01F 5/10 (2006.01) B28C 5/06 (2006.01) B01F 3/12 (2006.01)
Patent
CA 2000984
"MIXER CIRCUIT FOR OIL SAND" ABSTRACT OF THE DISCLOSURE The mixer circuit comprises a vertically oriented, open-topped mixer vessel having a cylindrical side wall terminating with a shallow conical bottom. The bottom wall forms a central bottom outlet. Recycled slurry and fresh water streams are fed tangentially to the inner surface of the vessel, thereby forming a vortex. The oil sand enters as a continuous, free- flowing stream moving along a downward trajectory; the stream impinges the vortex, wherein it is dispersed and mixed to create slurry. The slurry exits through the bottom outlet, is screened to remove oversize material, and enters a holding vessel. Part of the slurry in the holding vessel is recycled to the mixer vessel through a pipe loop incorporating a pump. The slurry is energized by the pump and functions to maintain and partly create the rapidly moving vortex that carries out the mixing and lump- disintegration actions. The balance of the slurry in the holding vessel is pumped out as product. The circuit is adapted to consistently produce a dense slurry.
Cymerman George J.
Leung Antony H. S.
Maciejewski Waldemar B.
Alberta Energy Company Ltd.
Bennett Jones Llp
Canadian Occidental Petroleum Ltd.
Esso Resources Canada Limited
Gulf Canada Resources Limited
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