IDENTIFICATION OF OXIDE PHASE AND ALLOY PHASE OBTAINED BY HEAT-TREATMENT OF CALCINED HIGH-LEVEL LIQUID WASTE WITH TIN REDUCING AGENT AT 1873 K

Authors
UNO M KINOSHITA H MIYAKE C HORIE M
Citation
M. Uno et al., IDENTIFICATION OF OXIDE PHASE AND ALLOY PHASE OBTAINED BY HEAT-TREATMENT OF CALCINED HIGH-LEVEL LIQUID WASTE WITH TIN REDUCING AGENT AT 1873 K, Journal of nuclear materials, 247, 1997, pp. 191-196
Citations number
13
Categorie Soggetti
Nuclear Sciences & Tecnology","Mining & Mineral Processing","Material Science
Journal title
Journal of nuclear materials → ACNP
ISSN journal
00223115
Volume
247
Year of publication
1997
Pages
191 - 196
Database
ISI
SICI code
0022-3115(1997)247:<191:IOOPAA>2.0.ZU;2-N
Abstract
Simulated calcined HLLW was heat treated with TiN as a reducing agent at 1873 K. The treatment resulted in the melted and separated alloy ph ase and oxide phase. The alloy phase contains Cr-Fe-Ni alloy, Fe-Ni al loy, Cr-Ni alloy, Ru-Fe alloy, Mo and Pd metals which are dissolved by Fe and does not contain Ti. The dissolution of Fe in Ru and Mo caused the melting of alloy phase at the treatment temperature. The oxide ph ase contains ZrTiO4, Sr0.5NdTi2O6, BaTiO3, La4Ti9O24, SrCeO3 and some neodymium-zirconium oxides phases. Some phases are those used as the h ost phase in the ceramic waste and the other phases are resulted from the smaller amount of Ti in the method than in ceramic waste. The form ation of the complex oxides caused the melting of the oxide phase at t he treatment temperature. (C) 1997 Elsevier Science B.V.