This work describes a streamlined approach to the recovery and purification of 234 U from aged 238 Pu. Key modifications to conventional techniques are described that result in an efficient uranium and plutonium separation process that successfully produced tens of grams of ultrahigh purity 234 U at Oak Ridge National Laboratory. A new processing scheme was developed using an anion exchange column run in a cycling mode with HNO 3 media as the primary uranium purification process. This was followed with a uranyl peroxide precipitation step to purify and solidify the uranium before conversion to U 3 O 8 . Both the traditional uranyl peroxide precipitation method and a new cascade uranyl peroxide precipitation process were used for final purification of the 234 U.

中文翻译：

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从老化的钚 238 中回收和提纯高纯铀 234 的化学工艺

这项工作描述了从老化的 238 Pu 中回收和纯化 234 U 的简化方法。描述了对常规技术的关键修改，导致高效的铀和钚分离过程，成功地在橡树岭国家实验室生产了数十克的超高纯度 234 U。使用以循环模式运行的阴离子交换柱开发了一种新的处理方案，其中 HNO 3 介质作为主要的铀纯化过程。接着是过氧化铀酰沉淀步骤，以在转化为 U 3 O 8 之前纯化和固化铀。传统的过氧化铀酰沉淀法和新型级联过氧化铀酰沉淀法均用于 234 U 的最终纯化。