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:
Nov. 18, 2014
Filed:
Dec. 02, 2010
Klaus H. Oehr, Surrey, CA;
Gary A. Cyr, Alamo, CA (US);
Travis Janke, North Vancouver, CA;
Claudio I. Arato, Vancouver, CA;
Roderick O. Mcelroy, Vancouver, CA;
Klaus H. Oehr, Surrey, CA;
Gary A. Cyr, Alamo, CA (US);
Travis Janke, North Vancouver, CA;
Claudio I. Arato, Vancouver, CA;
Roderick O. McElroy, Vancouver, CA;
Provectus Engineered Materiels Ltd., Vancouver, CA;
Abstract
A method of producing enhanced coal combustion ash for use in pozzolanic applications or cement manufacture, in which the enhanced combustion ash has lower mercury content. A slurry is formed of the combustion ash and water and is subjected to froth flotation to form a mercury-enriched ash slurry and a mercury-depleted ash slurry. The product mercury-depleted ash slurry is isolated and may optionally be dried. The combustion ash may be pulverized prior to being used to form the slurry, reducing its mean particle size. The mercury-depleted combustion ash product has reduced levels of mercury and ammonia, and reduced particle size.