Helical conduit hydrocyclone methods

B - Operations – Transporting – 04 – C

Patent

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Details

B04C 3/00 (2006.01) B04C 3/06 (2006.01) C10G 1/00 (2006.01)

Patent

CA 2661579

Methods for using hydrocyclones comprising helical conduits ahead of hydrocyclone open vessels are disclosed. The helical conduits may be in the form of coils or of spirals and may contain nozzles mounted in the walls of the conduits to inject fluids into suspension flowing through the conduits. The fluids may include gas under pressure, gas dissolved in liquids, collectors, activators, depressants, modifiers or frothers. The methods of the present invention are used to separate bitumen from oil sand suspensions or to separate comminuted minerals from gangue. The described and claimed hydrocyclone methods make use of centrifugal force fields to perform rapid froth flotation and produce underflow and overflow streams which, in some cases, may be deaerated and dewatered by an aperture oleophilic wall.

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