Liquid purification or separation – Processes – Making an insoluble substance or accreting suspended...
Reexamination Certificate
2007-07-24
2010-11-02
Hruskoci, Peter A (Department: 1797)
Liquid purification or separation
Processes
Making an insoluble substance or accreting suspended...
C210S728000, C210S734000, C210S735000, C210S778000
Reexamination Certificate
active
07824553
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.
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Groff Todd W.
Hovland Keith C.
Lesar Michael P.
Rakutis Ruta O.
Sundberg Charles R.
Buchanan & Ingersoll & Rooney PC
Cochenour Craig G.
Hruskoci Peter A
Neo Solutions, Inc.
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