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Molten ceramic solidification during molten state processing of HLW

Published online by Cambridge University Press:  21 March 2011

Hajime Kinoshita ,
Masayoshi Uno ,
Shinsuke Yamanaka  and
William E. Lee
Hajime Kinoshita
Affiliation:
Immobilisation Science Laboratory, The University of Sheffield, Sheffield, S1 3JD, UK
Masayoshi Uno
Affiliation:
Department of Nuclear Engineering, Osaka University, Suita, Osaka 565-0871, Japan
Shinsuke Yamanaka
Affiliation:
Department of Nuclear Engineering, Osaka University, Suita, Osaka 565-0871, Japan
William E. Lee
Affiliation:
Immobilisation Science Laboratory, The University of Sheffield, Sheffield, S1 3JD, UK
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Abstract

Solidification of molten ceramics during molten state processing of High-Level Waste (HLW) was studied to investigate a possibility of a simpler and flexible process for immobilisation of HLW. Simulated HLW was heated together with different reducing agents (TiN with AlN or TiO2) either at 1673 K or 1873K for 1 to 3 hours under Ar atmosphere. Cooling rates of 5 K/min and 10 K/min did not result in any obvious differences in the products obtained under the standard condition used in the present study. The composition and quantity of the reducing agent had a significant effect on the melting and solidifying behaviour of the simulated HLW. The results suggest the possible further studies to improve the solidification process and the final product.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 932: Symposium – Scientific Basis for Nuclear Waste Management XXIX , 2006 , 51.1
Copyright
Copyright © Materials Research Society 2006

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References

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