Stability of Tungsten Crucible against Uranium, Rare Earth, Cadmium, and Chlorides for Cathode Process in Pyroprocessing

Autor: Seungyoub Han, Gha-Young Kim, Chang Hwa Lee, Junhyuk Jang, Tack-Jin Kim, Sung-Jai Lee
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: Science and Technology of Nuclear Installations, Vol 2019 (2019)
ISSN: 1687-6083
1687-6075
Popis: The stability of W against U, rare-earth (RE) elements, Cd, and various chlorides was evaluated by melting and distillation testing. Three runs were performed with a W crucible to examine its reactivity: (i) RE melting by induction heating, (ii) salt distillation test of U-dendrite and various chlorides, and (iii) Cd distillation test from U–Cd alloy. The W crucible remained stable after the RE melting test using induction melting, exhibiting its applicability for induction heating systems. The salt distillation test with the W crucible at 1050°C exhibited the stability of W against U and various chlorides, showing no interaction. The Cd distillation test with the W crucible at 500°C showed that the crucible was very stable against Cd, maintaining a shiny surface. These results reveal that the W crucible is stable under operation conditions for both salt and Cd distillation, suggesting the high potential utility of W as a crucible material for application in cathode processes in pyroprocessing.
Databáze: OpenAIRE