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    • 7. 发明授权
    • Process for treating radioactive waste
    • 处理放射性废物的方法
    • US4361505A
    • 1982-11-30
    • US117089
    • 1980-01-31
    • Makoto KikuchiKoichi ChinoFumio KawamuraHideo Yusa
    • Makoto KikuchiKoichi ChinoFumio KawamuraHideo Yusa
    • C02F1/08C02F11/00G21F9/00G21F9/08G21F9/16G21F9/30
    • G21F9/167
    • N-.beta.-(aminoethyl)-.gamma.-aminopropyltrimethoxysilane [NH.sub.2 (CH.sub.2).sub.2 NH(CH.sub.2).sub.3 Si(OCH.sub.3).sub.3 ] as a silane coupling agent and SiO.sub.(2-x) (ONa).sub.x/2 (OH).sub.x/2 as colloidal silica are mixed into a radioactive liquid waste containing sodium sulfate as a main component, coming from a boiling water-type, nuclear power plant as an effluent. The resulting mixed radioactive liquid waste is supplied into a vessel provided with a rotating shaft with blades. The rotating shaft is revolved while heating the radioactive liquid waste in the vessel, thereby making the radioactive liquid waste into powder. The resulting powder containing the silane coupling agent and the colloidal silica is shaped into pellets by a pelletizer. The pellets having a low hygroscopicity and a high strength are obtained.
    • 作为硅烷偶联剂和SiO(2-x)(ONa)x / 2(OH)x / 2的N-β-(氨基乙基)-γ-氨基丙基三甲氧基硅烷[NH2(CH2)2NH(CH2)3Si(OCH3) 作为胶体二氧化硅作为主要成分混入含有硫酸钠的放射性废液中,作为流出物来自沸水型核电厂。 所得到的混合放射性废液被供给到具有带叶片的旋转轴的容器中。 旋转轴在加热容器内的放射性废液的同时旋转,从而使放射性废液成粉末。 所得到的含有硅烷偶联剂和胶体二氧化硅的粉末通过造粒机成形为颗粒。 获得具有低吸湿性和高强度的颗粒。