Process for converting wet fly ash into dry useful industrial products

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United States of America Patent

PATENT NO 6907994
APP PUB NO 20030089642A1
SERIAL NO

10274285

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Abstract

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There is provided a process for converting wet fly ash into a useful product such as cement replacement or industrial filler. A first amount of wet fly ash is provided. The wet fly ash is fed into a mixing chamber. An amount of aggregate, such as stone, is provided. The aggregate is also fed into the mixing chamber where the wet fly ash is mixed with the aggregate. The mixed wet fly ash and aggregate is fed into a drying chamber where the mixture is heated, thereby drying the fly ash and heating the aggregate. The heated aggregate is separated from the fly ash. The heated aggregate is fed back into the mixing chamber. A second amount of wet fly ash is added to the mixing chamber where is it mixed with the heated aggregate. The heated aggregate assists in drying the second amount of wet fly ash. Once in cycle, the process is continuous. Preferably, after the dried fly ash is segregated from the heated aggregate, it is introduced to a burner where the carbon component is oxidized and the beneficated fly ash exits.

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Patent Owner(s)

Patent OwnerAddress
C A S T MINERALS INCP O BOX 6606 HUNTINGTON WV 25772

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bradley, William S Catlettsburg, KY 1 4
Carnahan, Robert L Huntington, WV 2 19
Elk, Frank A Huntington, WV 2 19
Robbins, Riley D Beckley, WV 5 31

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