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Synroc-D type ceramics produced by hot isostatic pressing and cold crucible melting for immobilisation of (Al, U) rich nuclear waste

Conference Paper


Abstract


  • A synroc-D ceramic consisting mostly of spinel, hollandite, pyrochlore-structured CaUTi2O7, UO2, and Ti-rich regions shows promise for immobilisation of a HLW containing mainly Al and U, together with fission products. Ceramics with virtually zero porosities and waste loadings of 50-60 wt% on an oxide basis were prepared by cold crucible melting (CCM) at ∼1500°C, and also by subsolidus hot isostatic pressing (HIP) at 1100°C to prevent volatile losses. PCT leaching test values for Cs were < 13 g/L, with all other normalised elemental extractions being well below 1 g/L. © 2007 Materials Research Society.

Publication Date


  • 2007

Citation


  • Vance, E. R., La Robina, M., Li, H., & Davis, J. (2007). Synroc-D type ceramics produced by hot isostatic pressing and cold crucible melting for immobilisation of (Al, U) rich nuclear waste. In Materials Research Society Symposium Proceedings Vol. 985 (pp. 181-186).

Scopus Eid


  • 2-s2.0-41549138433

Web Of Science Accession Number


Start Page


  • 181

End Page


  • 186

Volume


  • 985

Abstract


  • A synroc-D ceramic consisting mostly of spinel, hollandite, pyrochlore-structured CaUTi2O7, UO2, and Ti-rich regions shows promise for immobilisation of a HLW containing mainly Al and U, together with fission products. Ceramics with virtually zero porosities and waste loadings of 50-60 wt% on an oxide basis were prepared by cold crucible melting (CCM) at ∼1500°C, and also by subsolidus hot isostatic pressing (HIP) at 1100°C to prevent volatile losses. PCT leaching test values for Cs were < 13 g/L, with all other normalised elemental extractions being well below 1 g/L. © 2007 Materials Research Society.

Publication Date


  • 2007

Citation


  • Vance, E. R., La Robina, M., Li, H., & Davis, J. (2007). Synroc-D type ceramics produced by hot isostatic pressing and cold crucible melting for immobilisation of (Al, U) rich nuclear waste. In Materials Research Society Symposium Proceedings Vol. 985 (pp. 181-186).

Scopus Eid


  • 2-s2.0-41549138433

Web Of Science Accession Number


Start Page


  • 181

End Page


  • 186

Volume


  • 985