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.
Type:
Grant
Filed:
September 22, 2010
Date of Patent:
January 10, 2012
Assignee:
Neo Solutions, Inc.
Inventors:
Keith C. Hovland, Todd W. Groff, Monica A. Yorke, Charles R. Sundberg, Michael P. Lesar, Ruta O. Rakutis
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.
Type:
Grant
Filed:
July 24, 2007
Date of Patent:
November 2, 2010
Assignee:
Neo Solutions, Inc.
Inventors:
Keith C. Hovland, Todd W. Groff, Monica A. Yorke, Charles R. Sundberg, Michael P. Lesar, Ruta O. Rakutis