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:
Oct. 06, 1998
Filed:
Aug. 29, 1997
Applicant:
Inventors:
John G Groppo, Jr, Wilmore, KY (US);
Thomas L Robl, Lexington, KY (US);
Charles J McCormick, Atlanta, GA (US);
Assignee:
University of Kentucky Research Foundation, Lexington, KY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B03B / ; B03B / ;
U.S. Cl.
CPC ...
209166 ; 209 121 ; 209 13 ; 209 17 ; 209459 ; 106405 ; 106D / ; 106705 ;
Abstract
A method for improving the pozzolanic character of fly ash includes the steps of first hydraulically classifying and then flotation separating the fly ash in order to reduce particle size distribution and remove carbon. The method also includes the steps of spiral concentrating separated coarse particles to recover iron, pyrite and marcasite and screening the fly ash to remove ultra-light carbon and plant debris.