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:
May. 30, 2000
Filed:
Jul. 13, 1999
Applicant:
Inventors:
Robert William Styron, Marietta, GA (US);
Jiann-Yang Hwang, Houghton, MI (US);
Assignee:
The Board of Control of Michigan Technological University, Houghton, MI (US);
Primary Examiner:
Int. Cl.
CPC ...
B03D / ; B03D / ; B03D / ;
U.S. Cl.
CPC ...
209166 ; 252 61 ;
Abstract
A froth flotation method is provided for removing carbon from fly ash which utilizes an environmental friendly conditioning agent. The conditioning agent preferably comprises a biodegradable oil which is added to a slurry containing raw fly ash and water. The conditioning agent renders the carbon in the fly ash hydrophobic such that upon aeration of the slurry, air bubbles attach to the carbon particles and carry them to the surface of the slurry in the form of a froth, such that the carbon may be removed.