Process for the conditioning of radioactive waste using...

Details Process for the conditioning of radioactive waste using... Process for the conditioning of radioactive waste using...

G - Physics

21

F

G21F 9/34 (2006.01) C01B 25/16 (2006.01) C01B 33/20 (2006.01) G21F 9/30 (2006.01)

Patent

CA 2167203

The invention relates to a process for the conditioning of radioactive waste using silicated apatites as the confinement matrix. This process consists of incorporating the waste (1) into a phosphosilicated apatite-based confinement matrix (3) e.g. complying with the formula: M t Ca x Ln y A z (PO4) u (SiO4) 6 -u X (I) in which M is an alkali metal, Ln a rare earth, A an actinide, X is S2-, 2F- , 2Cl- , 2Br- , 2I- or 2OH- and a is between 0 and 6.

L'invention concerne un procédé de conditionnement de déchets radioactifs utilisant des apatites silicatées comme matrice de confinement. Ce procédé consiste à incorporer les déchets (1) dans une matrice de confinement (3) à base d'apatite phosphosilicatée qui répond par exemple à la formule: MtCaxLnyAz(PO4)u(SiO4)6-uX, dans laquelle M est un métal alcalin, Ln est une terre rare, A est un actinide, X est S<2->, 2F<->, 2Cl<->, 2Br<->, 2I<-> ou 2OH<-> et u est compris entre 0 et 6.

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