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:
Nov. 02, 2010
Filed:
Jul. 24, 2007
Keith C. Hovland, Wadsworth, OH (US);
Todd W. Groff, Beaver, PA (US);
Monica A. Yorke, Coraopolis, PA (US);
Charles R. Sundberg, Ishpeming, MI (US);
Michael P. Lesar, Aurora, MN (US);
Ruta O. Rakutis, Carlsbad, CA (US);
Keith C. Hovland, Wadsworth, OH (US);
Todd W. Groff, Beaver, PA (US);
Monica A. Yorke, Coraopolis, PA (US);
Charles R. Sundberg, Ishpeming, MI (US);
Michael P. Lesar, Aurora, MN (US);
Ruta O. Rakutis, Carlsbad, CA (US);
Neo Solutions, Inc., Beaver, PA (US);
Abstract
The present invention provides a process for dewatering a mineral slurry concentrate and increasing the production of the resulting filter cake consisting essentially of mixing an aqueous mineral slurry concentrate with an effective amount of a nonionic surfactant and an effective amount of a cationic polymer to form a nonionic surfactant and cationic polymer treated aqueous mineral slurry concentrate, and subjecting the treated aqueous mineral slurry concentrate to a liquid water removal process for dewatering the treated aqueous mineral slurry and for increasing the production of a resulting filter cake of the dewatered mineral slurry. An improved mineral slurry concentrate composition and an improved mineral concentrate filter cake is also disclosed.