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本文研究了用萃淋树脂从酸性高放废液中分离回收锝的工作。在含有7402的萃淋树脂对锝进行不饱和吸附的条件下,利用锝与钌等裂片杂质的分配比不同,用硝酸解吸分离锝,经两个循环操作,对裂片元素钌、铈、铯的去污因数分别达1×10~5,≥2×10~5≥1×10~5,流程步骤简单、操作方便,并且不产生有机废液。
In this paper, we studied the separation and recovery of technetium from acid high-level liquid waste by extraction resin. Under the condition that the extraction resin containing 7402 is not adsorbed on technetium, the dislocations of technetium and ruthenium, such as ruthenium, are separated with dissociation of nitric acid, and the technetium is dissociated by nitric acid. After two cycles of operation, the distribution of ruthenium, cerium and cesium Decontamination factors were 1 × 10 ~ 5, ≥ 2 × 10 ~ 5 ≥ 1 × 10 ~ 5, the process steps are simple, easy to operate, and does not produce organic waste.