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Preparation method of uranium dioxide
The invention belongs to the technical field of nuclear chemical engineering, and particularly relates to a preparation method of uranium dioxide. The preparation method provided by the invention comprises the following steps: carrying out electrolytic reduction by adopting a three-electrode system, taking molten alkali metal halide as an electrolyte and taking U3O8 as a working electrode to obtain uranium dioxide. According to the preparation method provided by the invention, U3O8 is taken as a working electrode for electrolytic reduction, discharge is completed on an auxiliary electrode under the action of electron diffusion, electron migration and electron convection in molten alkali metal halide, and finally uranium dioxide is prepared. According to the preparation method, U3O8 is subjected to electrolytic reduction to prepare uranium dioxide, uranium dioxide with the stable stoichiometric ratio can be prepared, and the preparation method is simple, high in system safety and short in technological process.
本发明属于核化工技术领域，尤其涉及一种二氧化铀的制备方法。本发明提供的制备方法，包括以下步骤：采用三电极体系，以熔融态碱金属卤化物为电解液，以U3O8为工作电极进行电解还原，得到所述二氧化铀。本发明提供的制备方法以U3O8为工作电极进行电解还原，在熔融态碱金属卤化物中，通过电子扩散、电子迁移和电子对流的作用在辅助电极完成放电，最终制备得到二氧化铀。本发明提供的制备方法采用电解还原U3O8制备二氧化铀，不仅能够制备得到化学计量比稳定的二氧化铀，且制备方法简单、系统安全性高、工艺流程短。
Preparation method of uranium dioxide
The invention belongs to the technical field of nuclear chemical engineering, and particularly relates to a preparation method of uranium dioxide. The preparation method provided by the invention comprises the following steps: carrying out electrolytic reduction by adopting a three-electrode system, taking molten alkali metal halide as an electrolyte and taking U3O8 as a working electrode to obtain uranium dioxide. According to the preparation method provided by the invention, U3O8 is taken as a working electrode for electrolytic reduction, discharge is completed on an auxiliary electrode under the action of electron diffusion, electron migration and electron convection in molten alkali metal halide, and finally uranium dioxide is prepared. According to the preparation method, U3O8 is subjected to electrolytic reduction to prepare uranium dioxide, uranium dioxide with the stable stoichiometric ratio can be prepared, and the preparation method is simple, high in system safety and short in technological process.
本发明属于核化工技术领域，尤其涉及一种二氧化铀的制备方法。本发明提供的制备方法，包括以下步骤：采用三电极体系，以熔融态碱金属卤化物为电解液，以U3O8为工作电极进行电解还原，得到所述二氧化铀。本发明提供的制备方法以U3O8为工作电极进行电解还原，在熔融态碱金属卤化物中，通过电子扩散、电子迁移和电子对流的作用在辅助电极完成放电，最终制备得到二氧化铀。本发明提供的制备方法采用电解还原U3O8制备二氧化铀，不仅能够制备得到化学计量比稳定的二氧化铀，且制备方法简单、系统安全性高、工艺流程短。
Preparation method of uranium dioxide
一种二氧化铀的制备方法
LIAO JUNSHENG (author) / DU YUNFENG (author) / TANG HAO (author) / GAO RUI (author) / YANG ZHENLIANG (author) / LI BINGQING (author) / SHAO LANG (author) / JIANG JIAOLAI (author)
2021-11-12
Patent
Electronic Resource
Chinese
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