Process for immobilizing metallic sodium in glass form

Details Process for immobilizing metallic sodium in glass form Process for immobilizing metallic sodium in glass form

2006-08-15

2006-08-15

Silverman, Stanley S. (Department: 1754)

Chemistry of inorganic compounds

Miscellaneous process

C423SDIG012, C588S011000, C588S012000, C588S015000, C588S252000

Reexamination Certificate

active

07090827

ABSTRACT:
A process for immobilizing metallic sodium in glass form. The process comprises: (A) introducing in a dispersed state, into a reactor, an amount of a vitrified matrix precursor, metallic sodium and iron oxide (Fe2O3) sufficient to ensure oxidation of the metallic sodium; (B) producing a homogeneous mixture of these constituents; (C) heating the mixture to a temperature between 1000–1600° C. to form a molten homogeneous mixture in which the sodium introduced in (A) is converted to sodium oxide; and (D) recovering and cooling the molten mixture to obtain a vitrified matrix having a homogeneous composition, which matrix incorporates the sodium introduced in (A) as a constituent oxide. In a particular embodiment, the process may be used for the containment of metallic sodium containing radioactive elements.

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Copy of French Search Report dated May 19, 2003.

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