Liquidus temperature of spinel precipitating high-level waste glasses
- Pacific Northwest National Lab., Richland, WA (United States)
The liquidus temperature (T{sub L}) often limits the loading of high-level waste in glass through the constraint that T{sub L} must be at least 100 C below the temperature at which the glass viscosity is 5 Pa{center_dot}s. In this study, values of T{sub L} for spinel primary crystalline phase were measured as a function of glass composition. The test glasses were based on high-iron Hanford Site tank wastes. All studied glasses precipitated spinel (Ni,Fe,Mn)(Cr,Fe){sub 2}O{sub 4} as the primary crystalline phase. T{sub L} was increased by additions of Cr{sub 2}O{sub 3}, NiO, Al{sub 2}O{sub 3}, Fe{sub 2}O{sub 3}, MgO, and MnO; while Li{sub 2}O, Na{sub 2}O, B{sub 2}O{sub 3}, and SiO{sub 2} had a negative effect. Empirical mixture models were fitted to data.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 572015
- Report Number(s):
- CONF-961202-; TRN: 98:003683
- Resource Relation:
- Conference: 1996 Fall meeting of the Materials Research Society (MRS), Boston, MA (United States), 2-6 Dec 1996; Other Information: PBD: 1997; Related Information: Is Part Of Scientific basis for nuclear waste management XX; Gray, W.J. [ed.] [Pacific Northwest National Lab., Richland, WA (United States)]; Triay, I.R. [ed.] [Los Alamos National Lab., NM (United States)]; PB: 1389 p.; Materials Research Society symposium proceedings, Volume 465
- Country of Publication:
- United States
- Language:
- English
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