Increasing settling rate of fine solids in oil sand tailings

Details Increasing settling rate of fine solids in oil sand tailings Increasing settling rate of fine solids in oil sand tailings

B - Operations, Transporting

01

D

B01D 21/01 (2006.01) B03B 9/02 (2006.01)

Patent

CA 2183380

Calcium sulphate is added to desanded tailings derived from a hot water extraction process for recovering bitumen from oil sand. Enough calcium sulphate (100 to 200 ppm) is added to remove naphthenates and sulfonates from the aqueous phase. As a result, the settling rate of the fines in the tailings is accelerated.

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