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A Melting Route to Synroc for Hanford HLW Immobilization

Published online by Cambridge University Press:  15 February 2011

E. R. Vance ,
R. A. Day ,
M. L. Carter  and
A. Jostsons
E. R. Vance
Affiliation:
Materials Division, ANSTO, Menai, NSW 2234, Australia, erv@nucleus.ansto.gov.au
R. A. Day
Affiliation:
Materials Division, ANSTO, Menai, NSW 2234, Australia, erv@nucleus.ansto.gov.au
M. L. Carter
Affiliation:
Materials Division, ANSTO, Menai, NSW 2234, Australia, erv@nucleus.ansto.gov.au
A. Jostsons
Affiliation:
Materials Division, ANSTO, Menai, NSW 2234, Australia, erv@nucleus.ansto.gov.au
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Abstract

For the HLW fractions of certain Hanford tank wastes, wasteforms consisting mainly of crystalline Synroc phases in an aluminosilicate matrix can be formed by melting at 1350–1450°C in a neutral atmosphere, with waste loadings of up to 70 wt%, depending on the waste composition. The leachability of all measured elements in 7-day PCT tests was <0.1 g/m2/d at 90°C in the best materials.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 412: Symposium V – Scientific Basis for Nuclear Waste Management XIX , 1995 , 289
Copyright
Copyright © Materials Research Society 1996

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References

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