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Quantitative X-ray Analysis of ICPP Simulated High Alumina Calcine

Published online by Cambridge University Press:  06 March 2019

Paul Sliva ,
Mary Bliss  and
Barry E. Scheetz
Paul Sliva
Affiliation:
Materials Research Laboratory The Pennsylvania State University University Park, PA 16802
Mary Bliss
Affiliation:
Materials Research Laboratory The Pennsylvania State University University Park, PA 16802
Barry E. Scheetz
Affiliation:
Materials Research Laboratory The Pennsylvania State University University Park, PA 16802
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Abstract

High alumina radioactive waste calcine is produced at the Idaho Chemical Processing Plant (ICPP) by feeding a taw liquid waste stream through a fluidized bed calcitter. Further solidification of this calcine via chemical bonding necessitates determination of the amount of crystalline phase resulting from the calcination process. X-ray powder diffraction analysis of simulated (non-radioactive) ICPP high alumina calcine shows that it consists of an amorphous phase plus three phases of varying crystal Unity; alpha, beta and gamma alumina. Subsequent quantitative x-ray analysis of the three crystalline phases was carried out using the internal standard method with sodalite as the standard phase. Limited peak selection for the alumina phases required a correction for the presence of a small sodalite peak contained within the analyzed gamma alumina peak (4° two-theta base width). Results of this study show that the calcine is composed of ∼90 weight percent gamma alumina, less than 3-4 weight percent each of alpha and beta alumina and the remaining 4-6 weight percent an amorphous component.

Type
IX. XRD Search/Match Methods and Quantitative Analysis
Information
Advances in X-Ray Analysis , Volume 28: Thirty-Third Annual Conference on Applications of X-ray Analysis, July 30 - August 3, 1984 , 1984 , pp. 321 - 330
Copyright
Copyright © International Centre for Diffraction Data 1984

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