Conversion of Nuclear Waste to Molten Glass: Cold-Cap Reactions in Crucible Tests
The feed‐to‐glass conversion, which comprises complex chemical reactions and phase transitions, occurs in the cold cap during nuclear waste vitrification. To investigate the conversion process, we analyzed heat‐treated samples of a simulated high‐level waste feed using X‐ray diffraction, electron pr...
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| Veröffentlicht in: | Journal of the American Ceramic Society 2016-09, Vol.99 (9), p.2964-2970 |
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| creator | Xu, Kai Hrma, Pavel Rice, Jarrett A. Schweiger, Michael J. Riley, Brian J. Overman, Nicole R. Kruger, Albert A. |
| description | The feed‐to‐glass conversion, which comprises complex chemical reactions and phase transitions, occurs in the cold cap during nuclear waste vitrification. To investigate the conversion process, we analyzed heat‐treated samples of a simulated high‐level waste feed using X‐ray diffraction, electron probe microanalysis, leaching tests, and residual anion analysis. Feed dehydration, gas evolution, and borate phase formation occurred at temperatures below 700°C before the emerging glass‐forming melt was completely connected. Above 700°C, intermediate aluminosilicate phases and quartz particles gradually dissolved in the continuous borosilicate melt, which expanded with transient foam. Knowledge of the chemistry and physics of feed‐to‐glass conversion will help us control the conversion path by changing the melter feed makeup to maximize the glass production rate. |
| doi_str_mv | 10.1111/jace.14310 |
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Knowledge of the chemistry and physics of feed‐to‐glass conversion will help us control the conversion path by changing the melter feed makeup to maximize the glass production rate.</description><identifier>ISSN: 0002-7820</identifier><identifier>EISSN: 1551-2916</identifier><identifier>DOI: 10.1111/jace.14310</identifier><identifier>CODEN: JACTAW</identifier><language>eng</language><publisher>Columbus: Blackwell Publishing Ltd</publisher><subject>Anions ; Chemical engineering ; Chemical reactions ; Conversion ; Electron probes ; Foams ; Glass ; MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES ; Melts ; Nuclear waste ; Radioactive wastes ; reaction path ; Vitrification</subject><ispartof>Journal of the American Ceramic Society, 2016-09, Vol.99 (9), p.2964-2970</ispartof><rights>Published 2016. 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| source | Wiley Online Library Journals Frontfile Complete |
| subjects | Anions Chemical engineering Chemical reactions Conversion Electron probes Foams Glass MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES Melts Nuclear waste Radioactive wastes reaction path Vitrification |
| title | Conversion of Nuclear Waste to Molten Glass: Cold-Cap Reactions in Crucible Tests |
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