Process and apparatus for solidification of radioactive waste

Details Process and apparatus for solidification of radioactive waste Process and apparatus for solidification of radioactive waste

1985-02-01

1987-06-09

Lechert, Jr., Stephen J.

Compositions

Radioactive compositions

252626, 252631, 264 05, 423 11, G21F 916

Patent

active

046718974

ABSTRACT:
Radioactive waste is first converted into hardly water-soluble powder (including a water-insoluble powder) and then solidified with a hydraulic solidifier in a solidification vessel. The radioactive waste may be powdered (including granulated and encapsulated) by incorporating the radioactive waste with a substance which is capable of reacting with the water-soluble salt contained in the radioactive waste to form a hardly water-soluble salt (including a water-insoluble salt) and then powdering the mixture with drying, or by powdering the radioactive waste with drying, granulating the powder with drying and then microencapsulating the granules with a hardly water-soluble substance (including water-insoluble substance). The hardly water-soluble salts are preferably calcium salts, and the additives are preferably calcium hydroxide solution or solvent of combination of dichloromethane solution and hexane.

REFERENCES:
patent: 1059531 (1913-04-01), Ebler
patent: 3720609 (1973-03-01), Smith et al.
patent: 3962080 (1976-06-01), Dulin et al.
patent: 4086325 (1978-04-01), Cordier
patent: 4124405 (1978-11-01), Quienot
patent: 4401591 (1983-08-01), Korostenski
patent: 4459212 (1984-07-01), Carini
patent: 4511541 (1985-04-01), Bierman et al.
patent: 4530723 (1985-07-01), Smeltzer
Hawley, 1981, The Condensed Chemical Dictionary, 10th edition, Van Nostrand Reinhold Company, New York, p. 427.

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