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根据我国动力堆乏燃料后处理高放浓缩废液的组成,配制了总稀土含量为3.3g·L-1、硝酸浓度为3.0mol·L-1的溶液和高放废液模拟料液。建立了混合稀土的分析方法。在多级微型离心萃取器系统中用三元体系CMP-TBP/煤油及TBP/煤油作了萃取硝酸的多级逆流实验(六级萃取,二级洗涤,流比A
According to the composition of high-concentration concentrated waste liquid after spent fuel reprocessing in our country, the solution with the total rare earth content of 3.3g · L-1 and the concentration of nitric acid 3.0mol·L-1 and the simulated liquid of high level liquid waste were prepared. A method for the analysis of mixed rare earths was established. In the multi-stage micro-centrifugal extractor system, the ternary system CMP-TBP / kerosene and TBP / kerosene were used to perform multistage countercurrent experiments (six-stage extraction, two-stage washing, flow rate A