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Process for making a ceramic composition for immobilization of actinides

Patent ·
OSTI ID:874131
 [1];  [1];  [2];  [3];  [4];  [1];  [1];  [5];  [1];  [5];  [6];  [6]
  1. Livermore, CA
  2. Kirrawee, AU
  3. Barden Ridge, AU
  4. Cronulla, AU
  5. Pleasanton, CA
  6. Tracy, CA
+ Show Author Affiliations
Disclosed is a process for making a ceramic composition for the immobilization of actinides, particularly uranium and plutonium. The ceramic is a titanate material comprising pyrochlore, brannerite and rutile. The process comprises oxidizing the actinides, milling the oxides to a powder, blending them with ceramic precursors, cold pressing the blend and sintering the pressed material.
Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA
DOE Contract Number:
W-7405-ENG-48
Assignee:
The United States of America as represented by the United States Department (Washington, DC)
Patent Number(s):
US 6320091
OSTI ID:
874131
Country of Publication:
United States
Language:
English

References (8)

Synroc tailored waste forms for actinide immobilization journal January 2017
Phase identification, microstructural characterization, phase microanalyses and leaching performance evaluation of SYNROC-FA crystalline ceramic waste form journal April 1987
Demonstration of the Feasibility of Subsolidus Sintering of Radwaste-Containing SYNROC-B Composition journal July 1980
Fissile material disposition program final immobilization form assessment and recommendation report October 1997
Immobilization in Ceramic Waste Forms of the Residues From Treatment of Mixed Wastes journal January 1993
Plutonium immobilization plant using ceramic in existing facilities at the Savannah River site report June 1998
U.S.-Russian experts NATO collaborative research grant exchange visit meeting on excess Pu ceramics formulations and characterizations report November 1998
Structural damage in a self-irradiated zirconolite-based Ceramic journal February 1984

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Related Subjects

/588/
actinides
blend
blending
brannerite
ceramic
ceramic precursor
cold
composition
comprising
disclosed
immobilization
material
milling
oxides
oxidizing
plutonium
powder
precursors
pressed
pressing
process
pyrochlore
rutile
sintering
titanate
titanate material
uranium