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    FABRICATION METHOD OF BURNABLE ABSORBER NUCLEAR FUEL PELLETS AND BURNABLE ABSORBER NUCLEAR FUEL PELLETS FABRICATED BY THE SAME
    2.
    发明申请
    FABRICATION METHOD OF BURNABLE ABSORBER NUCLEAR FUEL PELLETS AND BURNABLE ABSORBER NUCLEAR FUEL PELLETS FABRICATED BY THE SAME 有权
    可制造吸收核燃料颗粒的制造方法和由其制成的可燃吸收核燃料电池

    公开(公告)号：US20130223582A1

    公开(公告)日：2013-08-29

    申请号：US13747685

    申请日：2013-01-23

    申请人： Korea Atomic Energy Research Institute

    发明人： Young Woo Rhee ,  Dong-Joo Kim ,  Jong-Hun Kim ,  Jae-Jo Yang ,  Keon-Sik Kim ,  Yang-Hyun Koo

    IPC分类号： G21C3/20

    CPC分类号： G21C3/42 ,  G21C3/20 ,  G21C3/326 ,  G21C3/623 ,  G21C21/02 ,  Y02E30/38

    摘要： A fabrication method of burnable absorber nuclear fuel pellets and burnable absorber nuclear fuel pellets fabricated by the same are provided, in which the fabrication method includes adding boron compound and manganese compound to one or more type of nuclear fuel powders selected from the group consisting of uranium dioxide (UO2), plutonium dioxide (PuO2) and thorium dioxide (ThO2) and mixing the same (step 1), compacting the mixed powder of step 1 into compacts (step 2), and sintering the compacts of step 2 under hydrogen atmosphere (step 3). According to the fabrication method, sintering can be performed under hydrogen atmosphere at a temperature lower than the hydrogen atmosphere sintering that is conventionally applied in the nuclear fuel sintered pellet mass production, by adding sintering additives such as manganese oxide or the like.

    摘要翻译： 提供了一种可燃性吸收剂核燃料颗粒和由其制造的可燃性吸收剂核燃料颗粒的制造方法，其中制造方法包括向选自铀的一种或多种类型的核燃料粉末中加入硼化合物和锰化合物 二氧化物（UO2），二氧化钚（PuO 2）和二氧化钍（ThO 2）并混合（步骤1），将步骤1的混合粉末压实成压坯（步骤2），并在氢气氛下烧结步骤2的压块 步骤3）。 根据该制造方法，可以通过添加烧结添加剂如氧化锰等在低于通常用于核燃料烧结颗粒批量生产的氢气氛烧结的温度的氢气氛下进行烧结。

    Method of preparing nuclear fuel pellet including thermal conductive metal and nuclear fuel pellet prepared thereby
    3.
    发明授权
    Method of preparing nuclear fuel pellet including thermal conductive metal and nuclear fuel pellet prepared thereby 有权

    公开(公告)号：US10102929B2

    公开(公告)日：2018-10-16

    申请号：US14591498

    申请日：2015-01-07

    申请人： KOREA ATOMIC ENERGY RESEARCH INSTITUTE

    发明人： Dong-Joo Kim ,  Young Woo Rhee ,  Keon-Sik Kim ,  Jong-Hun Kim ,  JangSoo Oh ,  Jae-Ho Yang ,  Yang-Hyun Koo

    IPC分类号： G21C3/04 ,  G21C21/02 ,  G21C3/62

    摘要： A method of a nuclear fuel pellet including a thermal conductive metal and a nuclear fuel pellet prepared thereby. The method includes preparing an oxide nuclear fuel granule having about 30%-45% theoretical density, mixing the fuel granule with thermal conductive metal powder, compacting the fuel granule with which the thermal conductive metal powder is mixed to prepare a green pellet, and sintering the green pellet. In the method, the sintering may be performed under a reducing gas atmosphere that is the same as the commercial pellet preparing process. Thus, compatibility compared to existing commercial preparing processes may be superior. Also, since a liquefied oxide formation process and a reducing process are omitted, the distribution uniformity of the metal material within the pellet may be superior. Therefore, the nuclear fuel pellet in which the metal network and fine microstructure are uniformly distributed within the pellet may be prepared.