Recoverable immobilization of transuranic elements in sulfate ash
Patent
·
OSTI ID:5422868
Disclosed is a method of reversibly immobilizing sulfate ash at least about 20% of which is sulfates of transuranic elements. The ash is mixed with a metal which can be aluminum, cerium, samarium, europium, or a mixture thereof, in amounts sufficient to form an alloy with the transuranic elements, plus an additional amount to reduce the transuranic element sulfates to elemental form. Also added to the ash is a fluxing agent in an amount sufficient to lower the percentage of the transuranic element sulfates to about 1% to 10%. The mixture of the ash, metal, and fluxing agent is heated to a temperature sufficient to melt the fluxing agent and the metal. The mixture is then cooled and the alloy is separated from the remainder of the mixture.
- Assignee:
- Dept. of Energy
- Patent Number(s):
- US 4509978
- OSTI ID:
- 5422868
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
052001* -- Nuclear Fuels-- Waste Processing
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
ALPHA-BEARING WASTES
ALUMINIUM
ASHES
CERIUM
CHEMICAL PREPARATION
ELEMENTS
EUROPIUM
HEATING
MANAGEMENT
MATERIALS
MATERIALS RECOVERY
METALS
MIXING
OXYGEN COMPOUNDS
PROCESSING
RADIOACTIVE MATERIALS
RADIOACTIVE WASTE PROCESSING
RADIOACTIVE WASTES
RARE EARTHS
RECOVERY
RESIDUES
SAMARIUM
SULFATES
SULFUR COMPOUNDS
SYNTHESIS
TRANSURANIUM ELEMENTS
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
ALPHA-BEARING WASTES
ALUMINIUM
ASHES
CERIUM
CHEMICAL PREPARATION
ELEMENTS
EUROPIUM
HEATING
MANAGEMENT
MATERIALS
MATERIALS RECOVERY
METALS
MIXING
OXYGEN COMPOUNDS
PROCESSING
RADIOACTIVE MATERIALS
RADIOACTIVE WASTE PROCESSING
RADIOACTIVE WASTES
RARE EARTHS
RECOVERY
RESIDUES
SAMARIUM
SULFATES
SULFUR COMPOUNDS
SYNTHESIS
TRANSURANIUM ELEMENTS
WASTE MANAGEMENT
WASTE PROCESSING
WASTES