Cryolite process for the solidification of radioactive wastes

Details Cryolite process for the solidification of radioactive wastes Cryolite process for the solidification of radioactive wastes

1974-05-13

1976-03-09

Sebastian, Leland A.

Compositions

Organic luminescent material containing compositions

Scintillating or lasing compositions

G21F 916

Patent

active

039430626

ABSTRACT:
An improved method is provided for solidifying liquid wastes containing significant quantities of sodium or sodium compounds by calcining in a fluidized-bed calciner. The formation of sodium nitrate which will cause agglomeration of the fluidized-bed particles is retarded by adding aluminum and a fluoride to the waste in order to produce cryolite during calcination. The off-gas of the calciner is scrubbed with a solution containing aluminum in order to complex any fluoride which may be liberated by subsequent dissolution of cryolite and prevent corrosion in the off-gas cleanup system.

REFERENCES:
ICP-1008 Newby, B. J. et al., "DTA-X-Ray Diffraction Examination . . . Potassium Nitrates".

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