Improvements in and relating to separating suspended solids

Details Improvements in and relating to separating suspended solids Improvements in and relating to separating suspended solids

C - Chemistry, Metallurgy

02

F

C02F 1/56 (2006.01)

Patent

CA 2364854

An improved method of settling solid material from aqueous suspensions generated during the separation of oil from bituminous sand is provided based around the use of a first anionic polymer having a molecular weight of less than 5,000,000 and a charge of between 40% and 100%, and a second anionic polymer having a molecular weight of at least 5,000,000 and a charge of between 1 % and 50%. In a preferred formal the two polymers are blended together before addition to the aqueous suspension. The invention offers improvements n settling rates and in particular in the clarity of to overflow product produced.

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