B - Operations – Transporting – 03 – B
Patent
B - Operations, Transporting
03
B
B03B 9/02 (2006.01) B04C 3/00 (2006.01)
Patent
CA 2050541
Abstract Method and apparatus of processing tar sands tailings, sludge from ponds and the like, aqueous mixtures that includes subjecting the mixture to subatmospheric pressure and while so doing causing a vortex to form in the liquid. The bitumen accumulates in the cavity formed by the vortex and from which it can be withdrawn. A solvent is added to facilitate removal of the bitumen. The preferred pressure is 27 to 29 inches of mercury vacuum and a vessel is needed to withstand this. A cylindrical vessel has an inlet for the aqueous mixture disposed tangential to the vessel and a first outlet on the axis of the vessel for the clarified liquid and a second outlet on the same axis for withdrawing the bitumen. A vacuum pump and/or columns of liquid are used to maintain subatmospheric pressure conditions in the vessel during operation. Two or more vessels can be connected in series providing, if desired, continuous flow and a staged series of clarification of the tailings.
495698 Alberta Ltd. (company)
Broughton Robert I.
Perley-Robertson Hill & Mcdougall Llp
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