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Sulfate-Resistant Portland Cement from Lime-Soda Sinter Process Residue

Published online by Cambridge University Press:  21 February 2011

J. A. Chesley  and
G. Burnet
J. A. Chesley
Affiliation:
Construction Technology Laboratories, Inc., 5420 Old Orchard Road, Skokie, IL 60077
G. Burnet
Affiliation:
Ames Laboratory, U.S.D.O.E. and Department of Chemical Engineering, Iowa State University, Ames, IA 50011.
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Abstract

A by-product (residue) from the Ames Lime-Soda Sinter Process for recovering alumina from power plant fly ash consists largely of dicalcium silicate and can be used as a raw material for the manufacture of sulfate-resistant (Type V) portland cement. Utilization of the residue will eliminate the need for its disposal and will improve the economic feasibility of the lime-soda sinter process. Laboratory burnability tests were used to identify optimum cement mixes and burning temperatures from both clinker quality and economic perspectives. At a typical kiln temperature of 1450°C, cements that formed concrete that exceeded ASTM specifications for strength were obtained for a limited range of lime-saturation factors and silica ratios. A highly conservative cost estimate for a combined alumina recovery and cement manufacturing facility for a 1000 MWe coal-fired power station gave a 4.7% internal rate of return.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 113: Symposium Q – Fly Ash and Coal Conversion By-Products IV , 1987 , 163
Copyright
Copyright © Materials Research Society 1988

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References

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