IRON PHOSPHATE GLASSES: AN ALTERNATIVE FOR VITRIFYING CERTAIN NUCLEAR WASTES
During the past year, iron phosphate glasses containing the following three types of nuclear waste, as recommended by the Tank Focus Area (TFA) group, have been investigated. (1) a high sodium/sulfate Hanford Low-Activity Waste (LAW) (2) a High Chrome Waste (HCW) at Hanford, and (3) a Sodium Bearing Waste (SBW) at Idaho National Engineering and Environmental Laboratory (INEEL) Over three hundred trial melts, ranging in size from 50 g to more than 10 kg, have been evaluated. The experimental work consisted of (1) evaluating the melting behavior and characteristics, (2) measurement of the viscosity and electrical conductivity of promising melts over their melting range, (3) determining the chemical durability by the PCT and VHT methods of both glassy and partially crystallized iron phosphate wasteforms, (4) determining the solubility limit for chrome oxide in selected iron phosphate melts, (5) examining the feasibility of melting iron phosphate glasses by Cold Crucible Induction melting (CCIM), Hot Crucible Induction Melting (HCIM), and Microwave Melting, (6) and measuring the corrosion of Inconel 690 and 693, potential electrode materials, in an iron phosphate melt. In the past year, the results of the above experimental work have been described in eight technical papers and reports that have been submitted for publication.
- Research Organization:
- University of Missouri-Rolla, Rolla, MO (US)
- Sponsoring Organization:
- USDOE Office of Science (SC) (US)
- DOE Contract Number:
- FG07-96ER45618
- OSTI ID:
- 834748
- Report Number(s):
- EMSP-73976-2003; R&D Project: EMSP 73976; TRN: US0407338
- Resource Relation:
- Other Information: PBD: 13 Jun 2003
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
54 ENVIRONMENTAL SCIENCES
BEARINGS
CORROSION
CRUCIBLES
ELECTRIC CONDUCTIVITY
ELECTRODES
INCONEL 690
INDUCTION
IRON PHOSPHATES
MELTING
OXIDES
RADIOACTIVE WASTES
SODIUM
SOLUBILITY
TANKS
VISCOSITY
WASTE FORMS