Ponded ash beneficiation system and related methods

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United States of America Patent

PATENT NO 11898112
APP PUB NO 20220282174A1
SERIAL NO

17686980

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Abstract

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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.

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Patent Owner(s)

Patent OwnerAddress
ASH-TEK LLC6174 NW 23RD STREET BOCA RATON FL 33434-4329

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Poling, Christopher Bel Air, US 12 16
Scheeres, Nico W Boca Raton, US 3 0

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