Open AccessBaseline milestone HWVP-87-V110202F: Preliminary evaluation of noble metal behavior in the Hanford waste vitrification plant reference glass HW-39
Author(s) -
R.W. Geldart,
S.O. Bates,
S.J. Jette
Publication year - 1996
Language(s) - English
Resource type - Reports
DOI - 10.2172/207648
Subject(s) - vitrification , noble metal , hanford site , materials science , rhodium , chromium , metallurgy , precipitation , radioactive waste , metal , chemistry , nuclear chemistry , catalysis , medicine , biochemistry , physics , meteorology , andrology
The precipitation and aggregation of ruthenium (Ru), rhodium (RLh) and palladium (Pd) in the Hanford Waste Vitrification Plant (HWVP) low chromium reference glass HLW-39 were investigated to determine if there is a potential for formation of a noble metal sludge in the HWVP ceramic melter. Significant noble metal accumulations on the floor of the melter will result in the electrical shorting of the electrodes and premature failure of the melter. The purpose of this study was to obtain preliminary information on the characteristics of noble metals in a simulated HWVP glass. Following a preliminary literature view to obtain information concerning the noble metals behavior, a number of variability studies were initiated. The effects of glass redox conditions, melt temperature, melting time and noble metal concentration on the phase characteristics of these noble metals were examined