Fundamental study of low-NOx combustion fly ash utilization. Semiannual report, May 1, 1998--October 31, 1998

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The objective of the current work was to investigate the oxidation reactivity of fly ash carbons, using thermogravimetric analysis techniques. Good measures of the oxidation reactivity of fly ash carbon were the critical temperature (T{sub cr}) and the late burnout temperature (T{sub late}). The lower the critical temperature of the fly ash carbon, the more reactive the sample. By contrast, the higher T{sub late}, the less reactive the fly ash carbon. The difference between T{sub cr} and T{sub late} provided information about the reactivity distribution and was mainly dependent on fly ash carbon content (Loss-On-Ignition (LOI)). Fly ash carbons having ... continued below

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Hurt, R.H. & Suuberg, E.M. October 20, 1999.

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Description

The objective of the current work was to investigate the oxidation reactivity of fly ash carbons, using thermogravimetric analysis techniques. Good measures of the oxidation reactivity of fly ash carbon were the critical temperature (T{sub cr}) and the late burnout temperature (T{sub late}). The lower the critical temperature of the fly ash carbon, the more reactive the sample. By contrast, the higher T{sub late}, the less reactive the fly ash carbon. The difference between T{sub cr} and T{sub late} provided information about the reactivity distribution and was mainly dependent on fly ash carbon content (Loss-On-Ignition (LOI)). Fly ash carbons having different origins, some from lower rank coals and some from higher rank coals had slightly different reactivities. Class C fly ash carbons from low rank coals were more reactive than the typical class F fly ash carbons from higher rank coals. The reactivity parameters did not, however, provide any additional ability to predict the suitability of a given ash for use in concrete.

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OSTI as DE00754421

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  • Other Information: PBD: 20 Oct 1999

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  • Report No.: DE--FG22-96PC96213-04
  • Grant Number: FG22-96PC96213
  • DOI: 10.2172/754421 | External Link
  • Office of Scientific & Technical Information Report Number: 754421
  • Archival Resource Key: ark:/67531/metadc704377

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  • October 20, 1999

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  • Sept. 12, 2015, 6:31 a.m.

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  • April 15, 2016, 1:54 p.m.

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Hurt, R.H. & Suuberg, E.M. Fundamental study of low-NOx combustion fly ash utilization. Semiannual report, May 1, 1998--October 31, 1998, report, October 20, 1999; Morgantown, West Virginia. (digital.library.unt.edu/ark:/67531/metadc704377/: accessed October 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.