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:
Jan. 15, 2013
Filed:
Apr. 18, 2007
Applicants:
Anders Klingberg, Henån, SE;
Elisabeth Henriksson, Kode, SE;
Inventors:
Anders Klingberg, Henån, SE;
Elisabeth Henriksson, Kode, SE;
Assignee:
Akzo Nobel N.V., , NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B03D 1/01 (2006.01); B03D 1/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a reverse froth flotation process for treating a calcium carbonate ore containing silicates. The process comprises the use of two collectors selected from the group consisting of fatty tri-lower-alkyl quaternary ammonium compounds, fatty di-lower-alkyl benzyl quaternary ammonium compounds, fatty lower-alkyl di-benzyl quaternary ammonium compounds, di-fatty di-lower-alkyl quats, di-fatty lower-alkyl benzyl quats, and fatty bis-imidazoline quats. The use of a combination of different quats was found to result in a synergetic performance of the collectors.