Oil sands separation process

Details Oil sands separation process Oil sands separation process

C - Chemistry, Metallurgy

10

G

C10G 1/00 (2006.01) B01D 21/00 (2006.01) B01D 21/01 (2006.01) C10G 1/04 (2006.01)

Patent

CA 2392246

Oil bearing sands recovery process comprising a main separation stage. The oil bearing sands is slurried in the main separation stage with water to produce an enriched fraction and a dilute aqueous clay waste. The aqueous clay waste is sedimented in a waste sedimentation stage in one or more settling lagoons to provide a substantially solid clay sediment and supernatant. The dilute aqueous clay waste is fed into a well and flocculated by addition of a polymeric flocculant. The flocculated dilute aqueous clay sediments to provide a pumpable thickened clay sediment layer in the base of the well.

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