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. 23, 1993
Filed:
Aug. 31, 1990
Applicant:
Inventors:
William A Crocker, Salem, OR (US);
John C Haygarth, Corvallis, OR (US);
Jon A Riesen, Albany, OR (US);
John R Peterson, Salem, OR (US);
Assignee:
Teledyne Industries, Inc., Albany, OR (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01G / ; C01F / ; C01F / ;
U.S. Cl.
CPC ...
423-2 ; 252626 ; 423461 ; 423252 ; 423253 ; 209165 ; 241 20 ; 241 21 ;
Abstract
A process for separating a feed mixture of zirconium and petroleum coke containing traces amount of radioative materials by flotation process utilizing a plurality of flotation cells. The process comprises grinding the feed mixture, slurrying the ground feed mixture with water, treating the slurry with a flotation agent and a collector for the coke and subjecting the treated slurry to air sparging and agitation to create an overflow and an underflow. The overflow is then filtered to collect substantially zircon-free coke for further processing.