Method for recovery of bitumen from bituminous emulsion froths

Details Method for recovery of bitumen from bituminous emulsion froths Method for recovery of bitumen from bituminous emulsion froths

C - Chemistry, Metallurgy

10

G

196/22

C10G 1/04 (2006.01)

Patent

CA 1238003

ABSTRACT A method for separating bitumen from a bituminous oil-in- water emulsion froth which is resistant to coalescence by milling, by (a) milling the emulsion with a ball mill, roller mill or equivalent milling device to impart a crushing action on said emulsion froth; (b) adding to said emulsion froth an amount of previously coalesced bitumen effective to initiate and maintain coalescence in said mill; (c) allowing a bitumen-rich liquid fraction to rise to the surface of the milled emulsion; and (d) separating said bitumen-rich fraction.

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