Process for drying oil sand mature fine tailings

Details Process for drying oil sand mature fine tailings Process for drying oil sand mature fine tailings

B - Operations, Transporting

01

D

B01D 21/01 (2006.01) B01D 21/24 (2006.01)

Patent

CA 2678818

The present invention generally relates to the field of treating oil sand fine tailings. A process for drying fine tailings, which may use a pipeline reactor system, comprises providing an in-line flow of the fine tailings; continuously introducing a flocculent solution to cause dispersion and commence flocculation of the fine tailings and may comprise rapid turbulent mixing; subjecting the fine tailings to flocculation and water release conditioning in-line to cause formation and rearrangement of flocs and increasing the yield shear stress to form flocculated fine tailings while avoiding over- shearing of the flocs; and depositing the fine tailings to allow the release of water, formation of a non--flowing fine tailings deposit and drying of the non-flowing fine tailings deposit. The process enables effective in-line dispersion, flocculation and water release, resulting in reliable deposition and drying of the fine tailings deposit.

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