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:
Mar. 17, 2020
Filed:
Sep. 26, 2016
Applicant:
Kemira Oyj, Helsinki, FI;
Inventor:
Duane C. Wilson, Marietta, GA (US);
Assignee:
Kemira OYJ, Helsinki, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08B 31/18 (2006.01); B03D 1/016 (2006.01); B03D 1/02 (2006.01); C08B 37/00 (2006.01); C08L 3/10 (2006.01); C08L 5/00 (2006.01);
U.S. Cl.
CPC ...
B03D 1/016 (2013.01); B03D 1/02 (2013.01); C08B 31/18 (2013.01); C08B 37/00 (2013.01); C08L 3/10 (2013.01); C08L 5/00 (2013.01); B03D 2201/06 (2013.01); B03D 2203/04 (2013.01);
Abstract
Depressants comprising a moderately oxidized polysaccharide having about 0.05 to about 4.5 mmol of anionic charge per gram at a pH of about 6 to about 7, or about 0.2 to about 5 mmol of anionic charge per gram at a pH of about 10 to about 11.2, are provided. Also disclosed are processes for enriching a desired mineral from an ore comprising the desired mineral and gangue, wherein the process comprises carrying out a flotation process in the presence of one or more of the depressants.