The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 01, 2013
Filed:
Feb. 07, 2007
Robert J. Pruett, Milledgeville, GA (US);
Jim Richardson, Milledgeville, GA (US);
William Limousin, Larmor Plage France, FR;
Ismail Yildirim, Milledgeville, GA (US);
Jun Yuan, Kathleen, GA (US);
Robert J. Pruett, Milledgeville, GA (US);
Jim Richardson, Milledgeville, GA (US);
William Limousin, Larmor Plage France, FR;
Ismail Yildirim, Milledgeville, GA (US);
Jun Yuan, Kathleen, GA (US);
Imerys Pigments, Inc., Roswell, GA (US);
Abstract
A method of treating a kaolin particulate material to improve one or more of its properties by removal of impurity particles therein which includes: producing a dispersed aqueous suspension of a kaolin particulate material containing at least 0.1% by weight, based on the dry weight of the kaolin particulate material of separable particulate impurity; diluting said dispersed aqueous suspension by adding a diluent thereto; adding a selective flocculation polymer to the diluted suspension; allowing the suspension containing the polymer to separate in a selective flocculation separator into layers comprising a flocculated product layer and a deflocculated impurity layer containing the separable impurity; and extracting the separated layers from the separator, wherein at least a portion of said deflocculated impurity layer is recirculated for use as at least a portion of the aforementioned diluent.