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Characterization of North American Lignite Fly Ashes I. Chemical Variation

Published online by Cambridge University Press:  21 February 2011

Robert J. Stevenson ,
James C. Collier ,
John J. Crashell  and
Larry R. Quandt
Robert J. Stevenson
Affiliation:
North Dakota Mining and Mineral Resources Research Institute, University of North Dakota, Grand Forks, ND 58202.
James C. Collier
Affiliation:
North Dakota Mining and Mineral Resources Research Institute, University of North Dakota, Grand Forks, ND 58202.
John J. Crashell
Affiliation:
North Dakota Mining and Mineral Resources Research Institute, University of North Dakota, Grand Forks, ND 58202.
Larry R. Quandt
Affiliation:
North Dakota Mining and Mineral Resources Research Institute, University of North Dakota, Grand Forks, ND 58202.
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Abstract

The chemical variation of central North American lignite fly ash can be compared using the major and minor oxide analyses and the distribution pattern of the inter-grain chemistries of the individual fly ash particles. AAS and electron microprobe chemical analysis of nineteen fly ashes have been used to illustrate the variations in bulk sample and individual grain chemistry. This information documents the chemical variability of the lignite fly ashes by geographic region. There is a direct relationship between grains rich in SiO2 and Al2O3 and in the Na2O content of the grains in lignite derived fly ashes. There is also a direct relationship between grains rich in CaP and the MgO and SO3 content of the grains in lignite derived fly ashes.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 113: Symposium Q – Fly Ash and Coal Conversion By-Products IV , 1987 , 87
Copyright
Copyright © Materials Research Society 1988

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References

REFERENCES

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