Method of preparing bodies containing radioactive substances

• US 4,209,421 A
• Filed: 01/25/1978
• Issued: 06/24/1980
• Est. Priority Date: 02/02/1977
• Status: Expired due to Term

• Current Assignee: Gelsenberg AG
• Original Assignee: Gelsenberg AG
• Inventors: Heimerl, Wilfried, De, Amal K., Schiewer, Edwin
• Primary Examiner(s): Padgett, Benjamin R.
• Assistant Examiner(s): Kyle, Deborah L.
• Application Number:
  US05/872,279
• Time in Patent Office: 881 Days
• Field of Search: 252/301.1 W, 65/33, 106/39.6, 106/39.7, 106/73.6, 427/217, 428/406
• US Class Current: 588/15
• CPC Class Codes: G21F 9/302 in an inorganic matrix
• CPC Class Codes: G21F 9/305 Glass or glass like matrix C03B5/005 takes precedence; compositional aspects C03C
• CPC Class Codes: Y10T 428/2996 Glass particles or spheres

Abstract

Radioactive substances are disposed of by incorporating glass particles containing the radioactive substance in molten metal, heat treating the molten metal containing the glass particles to convert the glass to glass ceramic, and cooling the resulting composite to solidify the metal and provide the glass ceramic particles embedded in a matrix of the metal.

Claims

1. Process of providing radioactive substance in a form suitable for disposal of the radioactive substance, comprising incorporating glass particles containing said radioactive substance in molten metal so that the particles are embedded in the molten metal, the glass of said glass particles being suitable for conversion to glass ceramic, and heat treating the molten metal having the glass particles embedded therein to convert the glass of the glass particles to glass ceramic and provide glass ceramic particles containing the radioactive substance embedded in a metal matrix.

2. Process of claim 1, wherein, in said heat treatment, the temperature of the molten metal is first increased, then maintained at increased temperature for a time period, and is then reduced to provide glass ceramic particles embedded in solidified metal matrix.

3. Process of claim 1, wherein the molten metal in which the glass particles are incorporated is in a container, the heat treatment is performed with the glass particles and metal in the container, and the glass ceramic particles embedded in the metal matrix is formed in the container, and the container containing the ceramic particles embedded in the metal matrix is stored for disposal.

4. Process of claim 2, wherein the molten metal in which the glass particles are incorporated is in a container, the heat treatment is performed with the glass particles and metal in the container, and the glass ceramic particles embedded in the metal matrix is formed in the container, and the container containing the ceramic particles embedded in the metal matrix is stored for disposal.

5. Process of claim 1, wherein the metal is of the group lead, lead alloys, aluminum, and aluminum alloys.