Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Darryl Smith0
Peter Norman0
Tony Whittaker0
Date of Patent
July 13, 2010
0Patent Application Number
105917760
Date Filed
February 28, 2005
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A process of dewatering an aqueous suspension comprising dosing the suspension with a flocculating amount of a first flocculant to form a thickened suspension and mixing into the thickened suspension a dewatering amount of a second flocculant and subjecting the thickened suspension to mechanical dewatering to form a cake, characterised in that the second flocculant comprises a water-soluble or water swellable polymer that is mixed into the suspension in the form of (i) substantially dry polymer particles or (ii) an aqueous composition comprising dissolved or hydrated polymer having a polymer concentration of at least 2% by weight and having a intrinsic viscosity of at least 3 dl/g.
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