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:
Jun. 20, 2000
Filed:
Nov. 25, 1998
Applicant:
Inventors:
Jan Olof Gustafsson, Kungalv, SE;
Anders Klingberg, Hen.ang.n, SE;
Assignee:
Akzo Nobel N.V., Arnhem, NL;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B03D / ; B03D / ;
U.S. Cl.
CPC ...
209166 ; 252 61 ; 209167 ;
Abstract
The present invention relates to a process for enriching an iron mineral from a silicate-containing iron ore by carrying out, at a pH of 8-11, a froth flotation in the presence of a depressing agent for the iron mineral and a collecting agent containing a combination of an ether monoamine and an ether polyamine, which contain an aliphatic hydrocarbon group having 6-22 carbon atoms in a weight ratio of the ether monoamine to the ether polyamine of 1:4-4:1. The invention also discloses a composition which is suitable for use in the process.