An improved method to dissolve alloyed plutonium residues

作者：Pescayre L^*; Passot C; Cardonna D; Chollet H

来源：Journal of Alloys and Compounds, 2007, 444: 603-605.

DOI：10.1016/j.jallcom.2006.12.051

• actinide alloys and compounds
• gas-solid reactions
• mechanochemical processing
• corrosion
• oxidation

An improved method to dissolve alloyed plutonium has been investigated. The purpose is to recycle plutonium residues which contain gallium greater than 15 wt%. The process consists of two main steps: oxidation by a moist Ar/O-2 mixture and then HNO3/HF dissolution. The burning process is shown to be efficient to oxidize only the plutonium. The only oxide species obtained is PuO2, which is suitable for a HNO3/HF dissolution at 70 degrees C. The global recovery yield is higher than 97%.

• 出版日期2007-10-11
• 单位中国地震局