Kinetics of beneficiated fly ash by carbon burnout

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Description

The presence of carbon in fly ash requires an increase in the dosage of the air-entraining admixture for concrete mix, and may cause the admixture to lose efficiency. Specifying authorities for the concrete producers have set maximum allowable levels of residual carbon. These levels are the so called Loss On Ignition (LOI). The concrete producers` day-to-day purchasing decisions sets the LOI at 4%. The objective of the project is to investigate the kinetics of oxidation of residual carbon present in coal fly ash as a possible first step toward producing low-carbon fly ash from high-carbon, low quality fly ash.

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12 p.

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Okoh, J.M.; Dodoo, J.N.D.; Diaz, A.; Ferguson, W.; Udinskey, J.R. Jr. & Christiana, G.A. December 31, 1997.

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Description

The presence of carbon in fly ash requires an increase in the dosage of the air-entraining admixture for concrete mix, and may cause the admixture to lose efficiency. Specifying authorities for the concrete producers have set maximum allowable levels of residual carbon. These levels are the so called Loss On Ignition (LOI). The concrete producers` day-to-day purchasing decisions sets the LOI at 4%. The objective of the project is to investigate the kinetics of oxidation of residual carbon present in coal fly ash as a possible first step toward producing low-carbon fly ash from high-carbon, low quality fly ash.

Physical Description

12 p.

Notes

OSTI as DE98006503

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  • 22. international technical conference on coal utilization and fuel systems, Clearwater, FL (United States), 17-20 Mar 1997

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  • Other: DE98006503
  • Report No.: DOE/MT/94016--10-Pt.2
  • Report No.: CONF-970310--
  • Grant Number: FG22-94MT94016
  • Office of Scientific & Technical Information Report Number: 663491
  • Archival Resource Key: ark:/67531/metadc709515

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • December 31, 1997

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • Nov. 11, 2015, 12:55 p.m.

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Okoh, J.M.; Dodoo, J.N.D.; Diaz, A.; Ferguson, W.; Udinskey, J.R. Jr. & Christiana, G.A. Kinetics of beneficiated fly ash by carbon burnout, article, December 31, 1997; United States. (digital.library.unt.edu/ark:/67531/metadc709515/: accessed July 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.