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Process for making a ceramic composition for immobilization of actinides

United States Patent

November 20, 2001
View the Complete Patent at the US Patent & Trademark Office
Lawrence Livermore National Laboratory - Visit the Industrial Partnerships Office Website
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.
Ebbinghaus; Bartley B. (Livermore, CA), Van Konynenburg; Richard A. (Livermore, CA), Vance; Eric R. (Kirrawee, AU), Stewart; Martin W. (Barden Ridge, AU), Walls; Philip A. (Cronulla, AU), Brummond; William Allen (Livermore, CA), Armantrout; Guy A. (Livermore, CA), Herman; Connie Cicero (Pleasanton, CA), Hobson; Beverly F. (Livermore, CA), Herman; David Thomas (Pleasanton, CA), Curtis; Paul G. (Tracy, CA), Farmer; Joseph (Tracy, CA)
The United States of America as represented by the United States Department of Energy (Washington, DC)
09/ 337,509
June 22, 1999
STATEMENT OF GOVERNMENT INTEREST The United States Government has rights in this invention pursuant to Contract No. W-7405-ENG-48 between the U.S. Department of Energy and the University of California.