公开(公告)号：US5185104A

公开(公告)日：1993-02-09

申请号：US789528

申请日：1991-11-08

申请人： Misato Horie

发明人： Misato Horie

IPC分类号： G21F9/32

CPC分类号： G21F9/32 ,  Y10S159/12

摘要： A method of treatment of a high-level radioactive waste comprising heating the radioactive waste at a high temperature of about 500.degree. to 3000.degree. C. to vaporize part of the elements contained in the radioactive waste, and cooling the resultant vapor to separately collect the elements. In one embodiment, the heating step is replaced by a reduction-heating step wherein heating is carried out in the presence of a reducing agent, e.g. hydrogen. In another embodiment, the heating step may be followed by the reduction-heating step.

摘要翻译： 一种处理高放射性废物的方法，包括在约500℃至3000℃的高温下加热放射性废物以蒸发放射性废物中包含的一部分元素，并冷却所得的蒸气以分别收集 元素。 在一个实施方案中，加热步骤被还原加热步骤代替，其中加热在还原剂的存在下进行。 氢。 在另一个实施例中，加热步骤之后可以是还原加热步骤。

公开(公告)号：US5250166A

公开(公告)日：1993-10-05

申请号：US873620

申请日：1992-04-22

申请人： Kenji Motojima ,  Misato Horie ,  Shin-ichiro Torada

发明人： Kenji Motojima ,  Misato Horie ,  Shin-ichiro Torada

IPC分类号： C25C1/20 ,  C25C7/00 ,  C25C7/08 ,  C25C7/02

CPC分类号： C25C7/00 ,  C25C1/20 ,  C25C7/08

摘要： A method of recovering palladium from a palladium-containing aqueous solution by electrolysis is provided. The method comprises the steps of dc-electrolyzing the palladium-containing aqueous solution acidified with nitric acid by using an electrolytic cell equipped with a platinum electrode as a cathode to thereby deposit and collect palladium on the cathode, taking the cathode on which palladium has been deposited and collected out of the electrolytic cell, transferring the palladium-deposited cathode to a recovery vessel containing dilute nitric acid therein, and mechanically shaking the cathode in the recovery vessel to remove and recover palladium from the cathode. An apparatus for carrying out the above-described method is also provided.

摘要翻译： 提供了通过电解从含钯水溶液中回收钯的方法。 该方法包括以下步骤：通过使用装备有铂电极作为阴极的电解池将用硝酸酸化的含钯水溶液直流电解，从而沉积并收集阴极上的钯， 沉积并从电解池中收集出来，将钯沉积的阴极转移到其中含有稀硝酸的回收容器中，并机械振荡回收容器中的阴极以从阴极中除去钯并从中回收钯。 还提供了一种用于执行上述方法的设备。

公开(公告)号：US5082603A

公开(公告)日：1992-01-21

申请号：US668481

申请日：1991-03-14

申请人： Misato Horie ,  Masahiro Fukumoto ,  Masayuki Yoneya

发明人： Misato Horie ,  Masahiro Fukumoto ,  Masayuki Yoneya

IPC分类号： G21F9/06 ,  G21F9/16 ,  G21F9/30 ,  G21F9/32

CPC分类号： G21F9/32

摘要： A method of treatment of a high-level radioactive waste containing platinum group elements is provided in which boron and a boron compound is added to a calcined material of the high-level radioactive waste in an amount of 0.5 to 10% by weight in terms of boron as a simple substance, and the resultant mixture is heated at a temperature of about 1000.degree. C. or above under a reduction condition to melt the mixture and to alloy the platinum group elements present in the calcined material with boron. A layer of the resultant platinum group element alloys is then separated and recovered from a layer of residual oxides through sedimentation. The layer of the residual oxides is solidified to form a highly volume-reduced high-level radioactive solidified waste.

摘要翻译： 提供了一种处理含有铂族元素的高放射性废物的方法，其中将硼和硼化合物加入到高放射性废物的煅烧材料中，其量为0.5-10重量％ 硼作为单一物质，并将所得混合物在还原条件下在约1000℃或更高的温度下加热以熔化混合物并将存在于煅烧材料中的铂族元素与硼合金。 然后通过沉降从一层残余氧化物中分离出一层所得的铂族元素合金。 残余氧化物的层被固化以形成高体积减小的高级放射性固体废物。