Process for immobilizing radioactive ion exchange resins by a hy

Details Process for immobilizing radioactive ion exchange resins by a hy Process for immobilizing radioactive ion exchange resins by a hy

1991-03-19

1992-09-01

Hunt, Brooks H.

Compositions

Radioactive compositions

252631, 210751, 210682, 210710, G21F 916

Patent

active

051436531

ABSTRACT:
The invention relates to a process for immobilizing, by an hydraulic binder, radioactive ion exchange resins or IER, which can contain borates in a quantity which can reach up to the equivalent of 1000 g H.sub.3 BO.sub.3 /kg of dry IER, wherein the IER are decanted and then placed in contact for a maximum of three hours with an eluant solution of 100 to 300 g/l in Ca(NO.sub.3).sub.2 in the proportion of 1 to 2 l/kg of decanted IER, an hydraulic binder of low hydration heat being added to the medium of pH.gtoreq.9 so that the ratio of the water of the eluant solution to the binder (by weight) is between 0.3 and 0.5 and that the incorporation rate:dry IER/final product (by weight) is between 3% and 10%.

REFERENCES:
patent: 4122028 (1978-10-01), Iffland et al.
patent: 4500449 (1985-02-01), Kuhnke et al.
patent: 4530723 (1985-07-01), Smeltzer et al.
patent: 4620947 (1986-11-01), Carlson
patent: 4663086 (1987-05-01), Le Fillatre
patent: 4671897 (1987-06-01), Mori et al.
patent: 4671898 (1987-06-01), Hultgren
patent: 4800042 (1989-01-01), Kurumada et al.

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