Radon is an important nuclear fuel, and the separation and preparation of nuclear neon is an important prerequisite for the development of nuclear energy. On March 19th, from the research group of Liao Wuping of the Changchun Institute of Applied Chemistry of the Chinese Academy of Sciences, the research group developed the nuclear purity under the support of the Chinese Academy of Sciences’ strategic pilot technology project, the national "973" project, and the National Natural Science Foundation of China. Solvent Extraction Separation Technology, recently granted an Australian patent license (AU2013201027).
So far, around the separation and preparation of nuclear pure plutonium, Changchun Yinghua has obtained three Chinese patents (ZL201110074345.8; ZL201210552752.X; ZL201210453853.1) and one Australian patent license, and applied for one US patent.
The lanthanum element is very stable and must be absorbed into neutrons before it can be converted into uranium-233. Therefore, the nuclear neodymium has very strict requirements on the neutron poison content, and even requires the following to be less than 50 ppb. Therefore, the preparation of nuclear thorium has great challenges. In response to this problem, Liao Wuping's research group successfully developed a nuclear preparation method for the extraction of solvent by neodymium. The content of neutron poisons such as lanthanum, cerium, lanthanum and tellurium reached below 50 ppb. The following innovative results were obtained:
(1) Developed a completely new nuclear pure yttrium solvent extraction system to solve the entrapment problem of micro-emulsion on impurities in the extraction process, achieved efficient separation of yttrium and impurity elements, and broke through the limit of solvent extraction to prepare ultra-low impurity content materials;
(2) Overcoming the shortcomings of conventional high-purity material separation processes such as column separation technology that cannot be continuously produced, and achieving continuous batch preparation of nuclear pure antimony samples, ensuring the smooth implementation of the pilot project of the nuclear energy system of the Yan-based molten salt reactor of the Chinese Academy of Sciences. The Institute of Chemicals became the only company in China that has mastered the continuous batch preparation technology of nuclear pure germanium.
(3) Coupling with rare earth cleaning and separation processes (ZL98122348.6; ZL02123913.4 and Chinese patent applications 201410764931.9; 201410764960.5), mastering the complete solvent extraction technology for the preparation of nuclear pure yttrium from the highly efficient separation and separation of yttrium resources. Nuclear power R&D provides a solid raw material production technology guarantee.
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