Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of uranium dioxide-graphene-like composite fuel pellet
The invention belongs to the technical field of nuclear fuel preparation, and relates to a preparation method of a uranium dioxide-graphene-like composite fuel pellet. The preparation method comprises the following steps: (1) dissolving polyacrylonitrile with a solvent, adding uranium dioxide powder, and uniformly mixing to obtain an intermediate; (2) evaporating the intermediate to remove the solvent to obtain uranium dioxide-polyacrylonitrile mixed powder; (3) loading the uranium dioxide-polyacrylonitrile mixed powder into a mold for cold press molding, and demolding to obtain a fuel pellet biscuit; And (4) sintering the fuel pellet biscuit in a reducing atmosphere to obtain the uranium dioxide-graphene-like composite fuel pellet. By utilizing the preparation method of the uranium dioxide-graphene-like composite fuel pellet, the novel composite fuel pellet with high thermal conductivity can be prepared, so that the economical efficiency and the safety of a nuclear reactor during operation are improved.
本发明属于核燃料制备技术领域，涉及一种二氧化铀‑类石墨烯复合燃料芯块的制备方法。所述的制备方法包括如下步骤：(1)将聚丙烯腈用溶剂溶解后加入二氧化铀粉末，混合均匀后得到中间体；(2)蒸发中间体除去溶剂后得到二氧化铀‑聚丙烯腈混合粉末；(3)将二氧化铀‑聚丙烯腈混合粉末装入模具冷压成型，脱模，得到燃料芯块素坯；(4)将燃料芯块素坯在还原性气氛下进行烧结，得到二氧化铀‑类石墨烯复合燃料芯块。利用本发明的二氧化铀‑类石墨烯复合燃料芯块的制备方法，能够制备得到高导热性的新型复合燃料芯块，从而提高核反应堆运行时的经济性和安全性。
Preparation method of uranium dioxide-graphene-like composite fuel pellet
The invention belongs to the technical field of nuclear fuel preparation, and relates to a preparation method of a uranium dioxide-graphene-like composite fuel pellet. The preparation method comprises the following steps: (1) dissolving polyacrylonitrile with a solvent, adding uranium dioxide powder, and uniformly mixing to obtain an intermediate; (2) evaporating the intermediate to remove the solvent to obtain uranium dioxide-polyacrylonitrile mixed powder; (3) loading the uranium dioxide-polyacrylonitrile mixed powder into a mold for cold press molding, and demolding to obtain a fuel pellet biscuit; And (4) sintering the fuel pellet biscuit in a reducing atmosphere to obtain the uranium dioxide-graphene-like composite fuel pellet. By utilizing the preparation method of the uranium dioxide-graphene-like composite fuel pellet, the novel composite fuel pellet with high thermal conductivity can be prepared, so that the economical efficiency and the safety of a nuclear reactor during operation are improved.
本发明属于核燃料制备技术领域，涉及一种二氧化铀‑类石墨烯复合燃料芯块的制备方法。所述的制备方法包括如下步骤：(1)将聚丙烯腈用溶剂溶解后加入二氧化铀粉末，混合均匀后得到中间体；(2)蒸发中间体除去溶剂后得到二氧化铀‑聚丙烯腈混合粉末；(3)将二氧化铀‑聚丙烯腈混合粉末装入模具冷压成型，脱模，得到燃料芯块素坯；(4)将燃料芯块素坯在还原性气氛下进行烧结，得到二氧化铀‑类石墨烯复合燃料芯块。利用本发明的二氧化铀‑类石墨烯复合燃料芯块的制备方法，能够制备得到高导热性的新型复合燃料芯块，从而提高核反应堆运行时的经济性和安全性。
Preparation method of uranium dioxide-graphene-like composite fuel pellet
一种二氧化铀-类石墨烯复合燃料芯块的制备方法
MA HAORAN (Autor:in) / ZHANG YAN (Autor:in) / ZHU LIYANG (Autor:in) / YANG ZHIHONG (Autor:in) / YANG SULIANG (Autor:in) / TIAN GUOXIN (Autor:in) / GUO BOLONG (Autor:in) / SUI ZHENG (Autor:in) / FENG HAINING (Autor:in)
27.04.2021
Patent
Elektronische Ressource
Chinesisch
Uranium dioxide-graphene fuel pellet and preparation method thereof
| Europäisches Patentamt | 2021
Uranium carbide pellet, preparation method therefor, and fuel rod
| Europäisches Patentamt | 2022
Composite Uranium Silicide-Uranium Dioxide Nuclear Fuel
| Europäisches Patentamt | 2021