Immobilization of uranium and plutonium into borobasalt, pyroxene and andradite mineral-like compositions
The immobilization of plutonium-containing wastes into stable solid compositions is one of the problems to be solved in the disposal of radioactive wastes. Research efforts on the selection, preparation with the use of the cold crucible induction melter (CCIM) technology, and investigation of materials that are most suitable for immobilizing plutonium-containing wastes of different origin have been carried out at the All-Russian Scientific Research Institute of Inorganic Materials (VNIINM) and the Institute of the Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry (IGEM), Russian Academy of Sciences within the framework of agreements with Lawrence Livermore National Laboratory (LLNL, USA) regarding material and technical support. This paper presents the data on the synthesis of cerium-, uranium-, and plutonium-containing materials based on borobasalt, pyroxene, and andradite compositions in the muffle furnace and by the CCIM method. Compositions containing up to 15-18 wt% cerium oxide, 8-11 wt% uranium oxide, and 4.6-5.7 wt% plutonium oxide were obtained in laboratory facilities installed in glove boxes. Comparison studies of the materials synthesized in the muffle furnace and CCIM demonstrate the advantages of using the CCIM method. The distribution of components in the materials.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- US Department of Energy (US)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 15005770
- Report Number(s):
- UCRL-JC-142270; TRN: US0305664
- Resource Relation:
- Conference: Waste Management 2001 Symposium, Tucson, AZ (US), 02/25/2001--03/01/2001; Other Information: PBD: 5 Feb 2001
- Country of Publication:
- United States
- Language:
- English
Similar Records
Investigations of plutonium immobilization into the vitreous compositions
Synthetic mineral-like matrices for HLLW solidification: Preparation by induction melter with a cold crucible (CCIM)
Related Subjects
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
54 ENVIRONMENTAL SCIENCES
CERIUM OXIDES
GARNETS
GEOCHEMISTRY
MINERALOGY
PETROGRAPHY
PLUTONIUM
PLUTONIUM OXIDES
RADIOACTIVE WASTES
SILICATE MINERALS
URANIUM
URANIUM OXIDES
WASTE MANAGEMENT
WASTES