Calcination process for radioactive wastes

Details Calcination process for radioactive wastes Calcination process for radioactive wastes

C - Chemistry, Metallurgy

09

K

23/338, 31/89

C09K 11/04 (2006.01) G21F 9/14 (2006.01)

Patent

CA 1043551

ABSTRACT OF THE DISCLOSURE The present invention provides a method for minimizing the volatilization of chlorides during solidification in a fluidized-bed calciner of liquids containing sodium, nitrate and chloride ions. Zirconium and fluoride are introduced into the liquid, and one-half mole of calcium nitrate is added per mole of fluoride present in the liquid mixture. The mixture is calcined in the fluidized- bed calciner at about 500°C., producing a high bulk density calcine product containing the chloride, thus tying up the chloride in the solid product and minimizing chloride volatilization.

234061

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