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. 19, 2013
Filed:
Aug. 27, 2011
Applicants:
Roe Hoan Yoon, Blacksburg, VA (US);
Dmitri Kouznetsov, Aurora, IL (US);
Inventors:
Roe Hoan Yoon, Blacksburg, VA (US);
Dmitri Kouznetsov, Aurora, IL (US);
Assignee:
Mineral and Coal Technologies, Inc., Blacksburg, VA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01J 3/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a method for separating diamond from gangue minerals. In particular, this method relates to the addition of a first reagent or reagents which contact the diamond in diamond ore slurry to at least partially remove hydrophilic coatings from the diamond surfaces. A second reagent or reagents may also be added to the slurry so that the reagent may adsorb on the diamond surfaces and thereby enhance the hydrophobicity of diamonds. The increase in hydrophobicity may improve the flotation of diamonds.