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:
Feb. 09, 1988
Filed:
Oct. 17, 1986
Applicant:
Inventors:
Jan D Miller, Salt Lake City, UT (US);
Ye Yi, Salt Lake City, UT (US);
Assignee:
University of Utah, Salt Lake City, UT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B03D / ;
U.S. Cl.
CPC ...
209167 ;
Abstract
Disclosed is a process for separating resin from reduced size resin-bearing coal particles by treating the particles with ozone. Particles of reduced size resin-bearing coal are preferably mixed with water to form a slurry. The slurry is then treated with ozone for a short length of time. The slurry is then subjected to froth flotation. The ozone selectively oxidizes the coal, decreasing its hydrophobicity causing the relatively more hydrophobic resin to attach to the bubbles formed during the flotation process. A much improved separation efficiency for resin flotation from coal is observed.