Processing method of radioactive waste and solidification product
Description
Oxide glass comprising at least vanadium, phosphorus and antimony is mixed with radioactive wastes at from 400 to 550degC and solidified. The composition of the oxide glass is determined as 30 to 60% by weight of V2O5, P2O5, 15 to 30% by weight of V2O5, and 10 to 30% by weight of Sb2O3 based on the oxide. Further, not less than 40% of vanadium contained in the oxide glass is defined as tetravalent vanadium, and the solidification treatment is conducted in an inert gas atmosphere such as of nitrogen or argon. Further, the solidification products are disposed in a concrete structure. With such procedures, solidification at a temperature of not causing evaporation of nuclides is enabled without performing pressurization operation, a corrosion rate of the glass is lowered and sealing performance for the radioactive nuclides is improved. (T.M.)
Availability note (English)
Available from JAPIO. Also available from EPO.Additional details
Publishing Information
- Imprint Pagination
- 4 p.
- IPC:
- Int. Cl. G21F9/30.
- IPC
- Int. Cl. G21F9/30.
- Patent number
- JP patent document 8-75898/A/
INIS
- Country of Publication
- Japan
- Country of Input or Organization
- Japan
- INIS RN
- 27066399
- Subject category
- S12: MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES;
- Resource subtype / Literary indicator
- Non-conventional Literature
- Descriptors DEI
- CONCRETES; GLASS; LEAKS; RADIOACTIVE MATERIALS; RADIOACTIVE WASTE PROCESSING; RADIOACTIVE WASTES; SHIELDS; SOLIDIFICATION; VALENCE; VANADIUM; VANADIUM OXIDES
- Descriptors DEC
- BUILDING MATERIALS; CHALCOGENIDES; ELEMENTS; MANAGEMENT; MATERIALS; METALS; OXIDES; OXYGEN COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS; VANADIUM COMPOUNDS; WASTE MANAGEMENT; WASTE PROCESSING; WASTES
Optional Information
- Secondary number(s)
- JP patent application 6-209522.