Retention of radio-ruthenium in acid processing of nuclear waste
    1.
    发明授权
    Retention of radio-ruthenium in acid processing of nuclear waste 失效
    放射性钌在核废料酸处理中的保留

    公开(公告)号:US4851156A

    公开(公告)日:1989-07-25

    申请号:US185717

    申请日:1980-09-10

    IPC分类号: G21F9/00 G21F9/30 G21F9/32

    摘要: Radioactive combustible waste can be processed with hot concentrated sulfuric acid and the resulting residue material immobilized in glass with retention of volatile radio-ruthenium, if present. In addition, the process features minimal material handling. The process combines a sulfuric acid digestion treatment of waste with a drying, desulfation, and glassification of the resulting acid residue into a non-dispersible solid of reduced volume. An optional ceramic product can be made without desulfation of the residue.

    摘要翻译: 放射性可燃废物可以用热浓硫酸处理,所得残留物固定在玻璃中,保留挥发性放射性钌(如果存在)。 此外,该方法具有最少的材料处理。 该方法将废弃物的硫酸消解处理与所得酸残留物进行干燥,脱硫和玻璃化,形成体积减小的不分散固体。 任选的陶瓷制品可以不残留物脱硫而制成。

    Detection of free liquid in containers of solidified radioactive waste
    2.
    发明授权
    Detection of free liquid in containers of solidified radioactive waste 失效
    检测固体放射性废物容器中的游离液体

    公开(公告)号:US4501146A

    公开(公告)日:1985-02-26

    申请号:US461283

    申请日:1983-01-27

    IPC分类号: G01F23/296 G01F23/28

    CPC分类号: G01F23/2962 Y10S73/01

    摘要: A method of nondestructively detecting the presence of free liquid within a sealed enclosure containing solidified waste by measuring the levels of waste at two diametrically opposite locations while slowly tilting the enclosure toward one of said locations. When the measured level remains constant at the other location, the measured level at said one location is noted and any measured difference of levels indicates the presence of liquid on the surface of the solidified waste. The absence of liquid in the enclosure is verified when the measured levels at both locations are equal.

    摘要翻译: 一种通过在两个直径相对的位置处测量废物的水平而非常破坏性地检测包含固化的废物的密封外壳内的游离液体的存在的方法,同时缓慢地将外壳倾斜到所述位置之一。 当测量水平在另一个位置保持恒定时,记录在所述一个位置处的测量水平,并且任何测量的水平差表示在固化废物的表面上存在液体。 当两个位置的测量水平相等时,验证外壳中没有液体。

    Process for immobilizing radioactive boric acid liquid wastes
    4.
    发明授权
    Process for immobilizing radioactive boric acid liquid wastes 失效
    固定放射性硼酸液体废物的方法

    公开(公告)号:US4595528A

    公开(公告)日:1986-06-17

    申请号:US608739

    申请日:1984-05-10

    IPC分类号: G21F9/14 G21F9/16 C04B35/00

    CPC分类号: G21F9/14

    摘要: A method of immobilizing boric acid liquid wastes containing radionuclides by neutralizing the solution and evaporating the resulting precipitate to near dryness. The dry residue is then fused into a reduced volume, insoluble, inert, solid form containing substantially all the radionuclides.

    摘要翻译: 通过中和溶液并将所得沉淀物蒸发至接近干燥的方式固定含有放射性核素的硼酸液体废物。 然后将干燥的残余物熔融成基本上含有所有放射性核素的减小体积,不溶性,惰性,固体形式。

    Recoverable immobilization of transuranic elements in sulfate ash
    5.
    发明授权
    Recoverable immobilization of transuranic elements in sulfate ash 失效
    超硫元素在硫酸盐灰中的可回收固定

    公开(公告)号:US4509978A

    公开(公告)日:1985-04-09

    申请号:US447569

    申请日:1982-12-07

    CPC分类号: G21F9/30

    摘要: Disclosed is a method of reversibly immobilizing sulfate ash at least about 20% of which is sulfates of transuranic elements. The ash is mixed with a metal which can be aluminum, cerium, samarium, europium, or a mixture thereof, in amounts sufficient to form an alloy with the transuranic elements, plus an additional amount to reduce the transuranic element sulfates to elemental form. Also added to the ash is a fluxing agent in an amount sufficient to lower the percentage of the transuranic element sulfates to about 1% to about 10%. The mixture of the ash, metal, and fluxing agent is heated to a temperature sufficient to melt the fluxing agent and the metal. The mixture is then cooled and the alloy is separated from the remainder of the mixture.

    摘要翻译: 公开了一种可逆地固定硫酸盐灰的方法,其至少约20%是经铀元素的硫酸盐。 灰分与足以与超铀元素形成合金的量的铝,铈,钐,铕或其混合物的金属加上另外的量将超铀元素硫酸盐还原为元素形式。 灰分中还加入了足以将超铀元素硫酸盐的百分比降至约1%至约10%的助熔剂。 将灰分,金属和助熔剂的混合物加热到足以熔化助熔剂和金属的温度。 然后将混合物冷却并将合金与混合物的其余部分分离。