Method for processing a diluted oil sand froth

Details Method for processing a diluted oil sand froth Method for processing a diluted oil sand froth

B - Operations, Transporting

03

B

B03B 9/02 (2006.01) B01D 17/00 (2006.01) B03B 5/02 (2006.01) B03D 1/08 (2006.01) C10G 1/04 (2006.01)

Patent

CA 2232929

A method for processing an oil sand froth that is withdrawn as an underflow stream (5) from a primary bitumen froth separation vessel (4) comprises the steps of vigorously agitating the underflow in an agitating tank (6) at such a shear level that agglomerates of asphaltenes and clays are formed whilst redispersion of the thus formed agglomerates remains limited and separating said agglomerates as a middlings stream (9) from the other components e.g. in a secondary separation vessel (7) in which the froth is gently agitated.

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