Compositions – Organic luminescent material containing compositions – Scintillating or lasing compositions
Patent
1977-12-19
1980-05-13
Padgett, Benjamin R.
Compositions
Organic luminescent material containing compositions
Scintillating or lasing compositions
106 54, G21F 908, G21F 914, G21F 916
Patent
active
042027926
ABSTRACT:
Method for the solidification, in a manner which protects the environment against contamination, of waste materials obtained during reprocessing of irradiated nuclear fuel and/or breeder materials in a matrix of borosilicate glass. Highly radioactive solutions or slurries containing the waste materials in dissolved or suspended form are evaporated in a vessel in the presence of glass former substances until they are dry, the dry residue is calcinated and the calcinate is melted together with the glass formers while the waste gases are discharged to the environment. The waste liquid is obtained from a reprocessing system without pretreatment, is mixed with glass formers and a reduction agent and then is introduced in a controlled, continuous manner into the center of a borosilicate glass melt disposed in a melting crucible at a temperature in the region of 1000.degree. to 1400.degree. C. to form an island-like drying and calcinating zone on the surface of the melt while avoiding contact of the waste liquid with the walls of the crucible. A reducing atmosphere is formed and the presence of components in the waste gas which would radiologically and/or chemically contaminate the environment are substantially avoided.
REFERENCES:
patent: 3153566 (1964-10-01), Spector
patent: 3673086 (1972-06-01), Drobnik
Krause, H., "Die Verfestigung hochradioaktiver Abfalle", Chemie-Ing.-Techn., 45 (10a), May 1973, pp. 658-663.
Grover, J. R. et al., "The FINGAL Process", AERE-R5188, Mar. 1966, pp. 1-6, 10, 11 and FIG. 1.
Morris, J. B. et al., "Preliminary Experience With the New Vitrification Inactive Pilot Plant", Int'l. Symp. on the Mgmt. of Rad. Wastes from the Nuc. Fuel Cycle, Vienna, (Paper IAEA/SM/207/22), Mar. 1976, pp. 1-9, Tables 1-7 and FIGS. 1-5.
Laude, F., "Pot Vitrification of Concentrated Fission Product Solutions", CONF-660208, Nov. 1966, pp. 222-234.
Johnson, K. D. B. et al., "Work in the U.K. on fixation of highly radioactive wastes in glass", Proc. 3rd Int'l. Conf. on Peaceful Uses of Atomic Energy, Geneva, Sep. 1964, vol. 14, pp. 244-252.
Kaufmann Friedrich
Koschorke Herbert
Seiffert Hartmut
Sienel Dieter
Weisenburger Siegfried
Gesellschaft fur Kernforschung m.b.H.
Kyle Deborah L.
Padgett Benjamin R.
LandOfFree
Method for noncontaminating solidification of radioactive waste does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for noncontaminating solidification of radioactive waste , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for noncontaminating solidification of radioactive waste will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-929107