Chemically Durable Iron Phosphate Glass Wasteforms
Up to 40 wt% of a simulated high level waste, whose major components were 54.6 wt% Na2O, 14.9 wt% P2O5 and 8.3 wt% Fe2O3, was successfully vitrified into iron phosphate wasteforms whose chemical durability was equivalent to that of borosilicate glass wasteforms. Because of their high fluidity, the iron phosphate wasteforms could be melted in as little as 30 min at temperatures between 1015°C and 1200°C. The addition of 3-7 wt% CaF2 to the batch decreased the melting time and temperature, by as much as 100°C, and improved the chemical durability, especially for crystallized iron phosphate wasteforms. Iron phosphate wasteforms are concluded to be a practical alternative for vitrifying those nuclear wastes not well suited for borosilicate glasses.
Z. S. Wu et al., "Chemically Durable Iron Phosphate Glass Wasteforms," Journal of Non-Crystalline Solids, Elsevier, Nov 1998.
The definitive version is available at http://dx.doi.org/10.1016/S0022-3093(98)00759-5
Materials Science and Engineering
Keywords and Phrases
C160; G210; M120; P150
Article - Journal
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