Abstract
X-ray analysis shows that mullite and silica are the major crystalline phases in fly ash. The “method of known additions” from X-ray diffraction techniques was used to calculate changes in the significant peak intensities of mullite and silica to determine their weight fractions in fly ash. This furthers the efforts of characterizing fly ash, which are being conducted to supplement the search for applications of this abundant material. The weight fractions of crystalline mullite and silica were determined to be 14.2 and 5.1 wt%, respectively. Thermal gravimetric studies as well as SEM and particle size analysis were also conducted on the fly ash.
Similar content being viewed by others
References
R. C. Joshi andE. A. Rosaver,Ceram. Bull. 5(52) (1973) 456.
Harold J. Gluskoter, “Mineral Matter and Trace Elements in Coal,” Coal Structure, Martin L. Gorbaty and K. Ouchi, editors; based on ACS/CSJ Chemical Congress Symposium, April 3–4, p. 3 1979.
G. C. Fisher andD. F. S. Natusch,Analytical Methods for Coal and Coal Products III (1979) 489.
Shas V. Mattigod andJarel O. Ervin,Fuel August (1983) 927.
Barry E. Scheetz andWilliam B. White, “Characterization of Crystalline Phases in Fly Ash by Microfocus Raman Spectroscopy.”Mat. Res. Soc. Symp. Proc. Vol. 43 (Materials Research Society, (1985) pp. 53–60.
W. D. Kingery, H. K. Bowen andD. R. Uhlmann, “Introduction to Ceramics,” 2nd edn (John Wiley and Sons, New York, 1976), Ch. 8.
G. Brown, “Associated Minerals.” Crystal Structures of Clay Minerals and their X-ray Identification, Mineralogical Society, Monograph No. 5, 1984 pp. 379 and 404.
G. W. Brindley, “Quantitative X-ray Mineral Analysis of Clays.” Crystal Structures of Clay Minerals and their X-ray Identification, Mineralogical Society, Monograph No. 5, 1984 p. 418.
W. D. Kingery, H. K. Bowen andD. R. Uhlmann, “Introduction to Ceramics,” 2nd edn (John Wiley and Sons, New York, 1976) Ch. 2.
M. W. McElroy, R. C. Carr, D. W. Ensor andG. R. Markowski,Science 215 (1982) 13.
Lee D. Hansen, David Silbermani andGerald L. Fisher,Environmental Sci. Technol. 9 (1981) 1057.
W. D. Kingery, H. K. Bowen andD. R. Uhlmann, “Introduction to Ceramics,” 2nd edn (John Wiley and Sons, New York, 1976) Ch. 7.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
White, S.C., Case, E.D. Characterization of fly ash from coal-fired power plants. J Mater Sci 25, 5215–5219 (1990). https://doi.org/10.1007/BF00580153
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00580153