Calcination process for radioactive wastes

Details Calcination process for radioactive wastes Calcination process for radioactive wastes

1974-09-10

1976-05-04

Padgett, Benjamin R.

Compositions

Organic luminescent material containing compositions

Scintillating or lasing compositions

G21F 914

Patent

active

039546616

ABSTRACT:
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.degree.C., producing a high bulk density calcine product containing the chloride, thus tying up the chloride in the solid product and minimizing chloride volatilization.

REFERENCES:
patent: 3479295 (1969-11-01), Thompson
patent: 3781217 (1973-12-01), Newby et al.

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