METHODS AND SYSTEMS FOR CONTROLLING CARBON BURN OUT
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United States of America Patent
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Issued Date -
Dec 21, 2023
app pub date -
Sep 1, 2023
filing date -
Mar 5, 2019
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Abstract
Systems and methods for beneficiating a recovered fly ash material and/or recovering fly ash from an impound site are described. The method may include thermally treating a first portion of a recovered fly ash material to form a thermally treated fly ash having a first temperature of at least 1000° F., and contacting the thermally treated fly ash with a second portion of the recovered fly ash material to cool the thermally treated fly ash to a second temperature of less than or equal to 500° F. and form a fly ash product. The fly ash product may have a carbon content less than 8% by weight, based on the total dry weight of the fly ash product.
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