Title:
廃棄物固定化用のセラミック媒質及び再処理核燃料集合体からの廃棄物を固定化する方法
Document Type and Number:
Japanese Patent JP4690623
Kind Code:
B2
Abstract:
A ceramic waste immobilizing material for the encapsulation of high level radioactive waste (HLW), e.g. resulting from the reprocessing of irradiated nuclear fuel. The ceramic waste immobilising material enables waste ions from at least fission products in irradiated nuclear fuel to be dissolved in substantially solid solution form. The ceramic waste immobilising medium has a matrix comprising phases of hollandite, perovskite and zirconolite in which the waste ions are dissolved. The invention also includes a method of immobilizing HLW from reprocessed nuclear fuel assemblies comprising the steps of mixing a liquor containing the HLW with a precursor material comprising oxides or oxide precursors of at least titanium, calcium and barium to form a slurry, drying the slurry, and calcining the dried slurry under a reducing atmosphere to form a powder comprising 30-65 weight % waste.
Inventors:
Madrell, Ewan Robert
Carter, Melody Lynn
Carter, Melody Lynn
Application Number:
JP2001537075A
Publication Date:
June 01, 2011
Filing Date:
November 08, 2000
Export Citation:
Assignee:
British Nuclear Fuels Public Limited Company
Australian Nuclear Science and Technology Organization
Australian Nuclear Science and Technology Organization
International Classes:
G21F9/16; C04B35/00; G21F9/30
Domestic Patent References:
| JP55037482A | ||||
| JP2002516397A | ||||
| JP2003520975A |
Attorney, Agent or Firm:
Shoichi Okuyama
Arihara Koichi
Matsushima Tetsuo
Arihara Koichi
Matsushima Tetsuo