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. 23, 2002
Filed:
Apr. 10, 2000
Applicant:
Inventors:
Anthony Peter Allen, West Yorkshire, GB;
Philip McColl, Huddersfield, GB;
George Thomas Staines, Northumberland, GB;
Assignee:
Ciba Specialty Chemicals Water Limited Treatments, Bradford, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 2/101 ; C09K 3/00 ; C02F 1/56 ;
U.S. Cl.
CPC ...
B01D 2/101 ; C09K 3/00 ; C02F 1/56 ;
Abstract
Belt pressing or other pressure dewatering of a high solids mineral suspension is facilitated by flocculating the suspension by mixing into the suspension anionic flocculant having IV at least 5 dl/g and a minor amount of a cationic flocculant which generally has IV at least 4 dl/g. The flocculants are normally such that counterionic precipitation occurs.