Method for improving the pozzolanic character of fly ash
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United States of America Patent
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Oct 6, 1998
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N/A
app pub date -
Aug 29, 1997
filing date -
Aug 29, 1997
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Abstract
A method for improving the pozzolanic character of fly ash includes the steps of first hydraulically classifying and then flotation separating the fly ash in order to reduce particle size distribution and remove carbon. The method also includes the steps of spiral concentrating separated coarse particles to recover iron, pyrite and marcasite and screening the fly ash to remove ultra-light carbon and plant debris.
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