摘要
在Ｐｕｒｅｘ流程１ＡＦ料液中调节钚的价态，先以ＮＨ＿２ＯＨ·ＨＮＯ＿３，Ｎ＿２Ｈ＿４·ＨＮＯ＿３和Ｕ（Ⅳ）为还原剂，详细研究了各种工艺变量对还原Ｐｕ（Ⅵ）的影响。其后，选择最佳还原条件，用模拟１ＡＦ料液做了验证。最终，完成了用ＮＯ￣－＿２氧化Ｐｕ（Ⅲ）至Ｐｕ（Ⅳ）的实验。
he process of plutonium valence adjustment in nitric acid solution is studied.Effect of pro-cess condition such as:concentrations of nitric acid,reductant and plutomium;temperature andcatalysis of uranium ect. on reduction efficiency of Pu(Ⅵ)are studied with reductant NH_2OH·HNO_3,N_2H_4·HNO_3 and U(Ⅵ).More than 99 % of Pu(Ⅵ)in simulated 1AF solution is reductedunder recommended process condition,the plutonium reducted is oxidated to Pu(Ⅳ)with NaNO_2for 1A extractor.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
1994年第2期143-149,共7页
Atomic Energy Science and Technology
