公开(公告)号：US4045526A

公开(公告)日：1977-08-30

申请号：US559298

申请日：1975-03-17

申请人： Kazumi Iwamoto ,  Tutomu Tobita ,  Toshio Masuyama ,  Hiroshi Yamazoe

发明人： Kazumi Iwamoto ,  Tutomu Tobita ,  Toshio Masuyama ,  Hiroshi Yamazoe

IPC分类号： G21C3/62 ,  G21C21/02 ,  G21C21/16

CPC分类号： G21C21/02 ,  Y10S376/901

摘要： A process for the preparation of graphite-clad nuclear fuel rods comprising coating fine particles of a nuclear fuel such as uranium oxide or thorium oxide with a matrix material containing graphite powder and a binder to form matrix material-coated globules, charging the thus-formed globules, without or after being pre-molded into a green rod-like fuel compact, into the rubber mold of a rubber press molding machine, charging a similar matrix material in the gap between the globules or rod-like fuel compact and the inner wall of the rubber mold, compressing the whole mass in the direction from the side face of the whole mass to the axis thereof to form a green, graphite coat material-coated fuel compact, baking the thus-formed green fuel compact at a temperature of up to 1800.degree. C and, if desired, impregnating the baked product with a resin followed by being rebaked at a temperature of up to 1800.degree. C; and the graphite-clad nuclear fuel rods.

摘要翻译： 一种用于制备包覆石墨的核燃料棒的方法，包括用含有石墨粉末和粘合剂的基体材料涂覆诸如氧化铀或氧化钍的核燃料的细颗粒以形成基体材料涂覆的球，将由此形成 小球，没有或之后被预先模制成绿色棒状燃料压块，进入橡胶压模机的橡胶模具中，在小球或棒状燃料压块之间的间隙中加入类似的基质材料， 的橡胶模具，从整个物料的侧面向其轴线方向压制整个物料，形成绿色的石墨涂层材料涂覆的燃料成型体，在如此形成的绿色燃料压块的温度下烘烤 如果需要，用树脂浸渍烘焙产品，然后在高达1800℃的温度下再加捻; 和石墨包覆的核燃料棒。