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:
Apr. 11, 2000
Filed:
May. 08, 1998
Applicant:
Inventors:
Radhakrishnan Selvarajan, Downers Grove, IL (US);
Everett C Phillips, Batavia, IL (US);
Assignee:
Nalco Chemical Company, Naperville, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210727 ; 210733 ; 423121 ; 423122 ;
Abstract
The present invention is directed to the clarification of red mud-containing liquors generated in the Bayer process for the recovery of alumina from bauxite ore with a combination of high molecular weight emulsion polymer and lower molecular weight emulsion polymers. The invention is also a method for the same purpose utilizing a methyl acrylate emulsion homopolymer.