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. 13, 2024
Filed:
Mar. 04, 2022
Ash-tek, Llc, Boca Raton, FL (US);
Christopher Poling, Bel Air, MD (US);
Nico W. Scheeres, Boca Raton, FL (US);
Ash-TEK, LLC, Boca Raton, FL (US);
Abstract
A ponded ash beneficiation system and related methods treat either landfilled or ponded waste coal fly ash by removing at least 75% of the carbon from a collected quantity of such waste coal fly ash. Analysis and testing of the collected waste coal fly ash to determine optimal air balance, indirect heat temperature and retention time. Subjecting a stream of such waste coal fly ash to temperatures ranging from 900° F. and 1150° F. along with air addition calibrated as a function of the LOI of the carbon in such waste coal fly ash. This stream is exposed to the foregoing range of temperatures and corresponding air addition for a range of time between 20 minutes and 90 minutes, in certain aspects of the disclosure. A system for beneficiating landfilled or ponded waste coal fly ash makes use of a carbon reduction kiln comprising multiple independent heat zones so that the waste coal fly ash is preferably exposed to indirect heat when received in such zones.