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Title: Method of preparing sodalite from chloride salt occluded zeolite

A method for immobilizing waste chloride salts containing radionuclides and hazardous nuclear material for permanent disposal starting with a substantially dry zeolite and sufficient glass to form leach resistant sodalite with occluded radionuclides and hazardous nuclear material. The zeolite and glass are heated to a temperature up to about 1000.degree. K. to convert the zeolite to sodalite and thereafter maintained at a pressure and temperature sufficient to form a sodalite product near theoretical density. Pressure is used on the formed sodalite to produce the required density.
Inventors:
 [1];  [2]
  1. (Naperville, IL)
  2. (Lisle, IL)
Issue Date:
OSTI Identifier:
870876
Assignee:
United States of America as represented by United States (Washington, DC) ANL
Patent Number(s):
US 5613240
Contract Number:
W-31109-ENG-38
Research Org:
Argonne National Laboratory (ANL), Argonne, IL
Country of Publication:
United States
Language:
English
Subject:
method; preparing; sodalite; chloride; salt; occluded; zeolite; immobilizing; waste; salts; containing; radionuclides; hazardous; nuclear; material; permanent; disposal; starting; substantially; dry; sufficient; glass; form; leach; resistant; heated; temperature; 1000; degree; convert; thereafter; maintained; pressure; product; near; theoretical; density; formed; produce; required; waste chloride; permanent disposal; theoretical density; temperature sufficient; chloride salt; chloride salts; containing radionuclides; nuclear material; salts containing; substantially dry; immobilizing waste; leach resistant; hazardous nuclear; /588/976/

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