Process for working up uranium--thorium wastes

Patent · Tue Nov 07 04:00:00 EST 1978

OSTI ID:6227792

Boerner, P; Isensee, H J

There is provided a process for working up and returning without lost waste into the process of casting kernels of uranium--thorium oxide by dissolving the wastes in a nitric acid-hydrofluoric acid mixture and neutralizing the strongly acid solution before the addition to the casting solution. The strong nitric acid solution is evaporated up to the appearance of nitrous gas, the residue diluted with water and this solution brought to a pH of 2.5 to 3.5 with ammonia at a temperature below 40/sup 0/C.

• Assignee: Nukem GmbH
• Patent Number(s): US 4124525
• OSTI ID: 6227792
• Country of Publication: United States
• Language: English

Related Subjects

052001* -- Nuclear Fuels-- Waste Processing
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
ACTINIDE COMPOUNDS
CHALCOGENIDES
FUEL FABRICATION PLANTS
FUEL PELLETS
MANAGEMENT
MATERIALS RECOVERY
NUCLEAR FACILITIES
OXIDES
OXYGEN COMPOUNDS
PELLETS
PROCESSING
RADIOACTIVE WASTE PROCESSING
RECOVERY
SOLID WASTES
THORIUM COMPOUNDS
THORIUM OXIDES
URANIUM COMPOUNDS
URANIUM OXIDES
WASTE MANAGEMENT
WASTE PROCESSING
WASTES