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:
Nov. 12, 1985
Filed:
Oct. 17, 1983
Applicant:
Inventors:
Yosry A Attia, Columbus, OH (US);
Douglas W Fuerstenau, Berkeley, CA (US);
Assignee:
The Regents of the University of California, Berkeley, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
B03B / ;
U.S. Cl.
CPC ...
209-5 ;
Abstract
A method for removing inorganic sulfides from finely ground, non-sulfide minerals is provided. A polymeric agent having a molecular weight of from about 1,000 to about 300,000 and with a plurality of xanthate groups per molecule is admixed into an aqueous suspension including inorganic sulfides and non-sulfide minerals. The polymeric agent adsorbs onto the inorganic sulfides and maintains them as a dispersion while the remaining minerals are selectively separated, as by flocculation.