Triboelectrostatic Separation of Fly Ash with Different Charging Materials |
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Authors: | Y Soong G?A Irdi T?R McLendon S?W Hedges R?M Dilmor C Griffith V Romanov I Haljasmaa |
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Affiliation: | U. S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, United States of America |
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Abstract: | A combination of mechanical sieving and triboelectrostatic separation were used to separate fly ash. The results indicate that a simple separation of unburned carbon from fly ash is achievable at particle sizes of 74 and 44 microns. Subsequently, triboelectrostatic separations were conducted via a louvered plate separator. The results show that the final carbon content in the products, which can be as low as 1.5 % or as high as 60 % with different mineral components, can be further adjusted with the combination of sieving, louvered plate separator with a tribocharger made of different materials (copper and Teflon), and the location on the louvered plate where the fly ash particles were collected. |
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Keywords: | Combustion Fly ash Separation techniques |
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