Proposed noble metals-compatible melter: Preliminary modeling results
The noble metals palladium, rhodium, and ruthenium are present in waste to be vitrified at Hanford, and they can disrupt operations by precipitating and settling in the glass melter. This paper reports ongoing work to evaluate and better understand the characteristics of noble metals in support of the Hanford Waste Vitrification Plant. In this context, a sloped melter bottom, a bottom drain freeze valve, and three electrodes to enhance convection are being evaluated. This paper discusses the strategy for accommodating noble metals, describes theoretical modeling of freeze valve operation, and describes progress on physical modeling of the motion of glass and precipitates in the melter cavity. The investigation focuses on a sloped-bottom, three-electrode melter design, which is a promising approach for accommodating noble metals. 11 refs., 4 figs.
- Research Organization:
- Pacific Northwest Lab., Richland, WA (USA)
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 6157883
- Report Number(s):
- PNL-SA-16850; CONF-890488-7; ON: DE89011211; TRN: 89-012253
- Resource Relation:
- Conference: 4. international symposium on ceramics in nuclear waste management, Indianapolis, IN, USA, 23 Apr 1989; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
CERAMIC MELTERS
MATHEMATICAL MODELS
HIGH-LEVEL RADIOACTIVE WASTES
UNDERGROUND DISPOSAL
BUILDUP
CONTAMINATION
LIQUID WASTES
PALLADIUM
RADIOACTIVE WASTE MANAGEMENT
REMOVAL
RHODIUM
RUTHENIUM
SOLIDIFICATION
VITRIFICATION
ELECTRIC FURNACES
ELEMENTS
FURNACES
MANAGEMENT
MATERIALS
METALS
PHASE TRANSFORMATIONS
PLATINUM METALS
RADIOACTIVE MATERIALS
RADIOACTIVE WASTES
TRANSITION ELEMENTS
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES
052001* - Nuclear Fuels- Waste Processing
053000 - Nuclear Fuels- Environmental Aspects