Publication de 4 numéros par an
ISSN Imprimer: 1093-3611
ISSN En ligne: 1940-4360
Indexed in
APPLICATION OF REACTIVE PLASMA TO NUCLEAR WASTE TREATMENT - POSSIBILITY OF SEPARATION PROCESS OF ZR-NB ALLOY BY REACTIVE THERMAL PLASMA TREATMENT
RÉSUMÉ
Applications of thermal plasmas in the nuclear engineering field are reviewed, and as an application example of a reactive thermal plasma treatment, the possibility of separation of zirconium-niobium alloy is reported. Some experiments, which use a thermal fluorine plasma have been carried out and the following results have been obtained. When the process takes place above the melting point of this alloy, Zr is extracted successfully in the evaporated fine particles and Nb is enriched in the bulk alloy. This phenomenon can be explained well by using Gibbs free energy of fluorine reactions. For a better separation, a higher temperature of the sample and a more effective mass transfer of Nb in the melting alloy is required. The results confirm the possibility of this separation method.
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