Method of treating an aqueous suspension of kaolin
AssigneeImerys Pigments, Inc.
InventorsMichael Garska, Robert Pruett, Jun Yuan, Christopher Golley
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Abstract
A method for the treatment of kaolin particulate material comprising: providing a dispersed aqueous suspension comprising kaolin particulate material and having a pH of at least about 7.5; selecting at least one selective flocculation polymer, wherein said at least one selective flocculation polymer has a measured anionicity ranging from about 1% to about 12%, such as from about 4.5% to about 8%; selectively flocculating said suspension into a first layer and a second layer by adding to said suspension said at least one selective flocculation polymer, and separating said first layer from said second layer.
Claims40
A method for the treatment of kaolin particulate material comprising:
- (a) providing a dispersed aqueous suspension comprising kaolin particulate material and having a pH of at least about 7.5;
- (b) selecting at least one selective flocculation polymer, wherein said at least one selective flocculation polymer has a measured anionicity ranging from about 1% to about 12%;
- (c) selectively flocculating said suspension into a first layer and a second layer by adding to said suspension said at least one selective flocculation polymer;
- and
- (d) separating said first layer from said second layer.
A method for the treatment of kaolin particulate material comprising:
- (a) providing a dispersed aqueous suspension of said kaolin particulate material having a pH of at least about 7.5;
- (b) selecting at least one selective flocculation polymer, wherein said at least one polymer has a narrow range of variability for measured anionicity and has a measured anionicity ranging from about 1% to about 12%;
- (c) selectively flocculating said suspension with adjusted pH into a first layer and a second layer by adding to said suspension said at least one polymer;
- and
- (d) separating said first layer from said second layer.
A method for the treatment of kaolin particulate material comprising:
- (a) providing a dispersed aqueous suspension of said kaolin particulate material having a pH of at least about 7.5;
- (b) selecting at least one selective flocculation polymer, wherein said at least one selective flocculation polymer has been manufactured by a continuous process and has a measured anionicity ranging from about 1% to about 12%;
- (c) selectively flocculating said suspension with adjusted pH into a first layer and a second layer by adding to said suspension said at least one selective flocculation polymer;
- and
- (d) separating said first layer from said second layer.
Dependencies are inferred from the claim text.