公开(公告)号：US07241932B2

公开(公告)日：2007-07-10

申请号：US10485926

申请日：2002-07-22

申请人： Ewan Robert Maddrell

发明人： Ewan Robert Maddrell

IPC分类号： G21F9/34

CPC分类号： G21F9/305

摘要： The present invention relates to an immobilizing medium for the encapsulation of radioactive waste. The waste immobilizing medium has a sodium silicate based glass matrix in which there is contained radioactive waste wherein the waste comprises one or more inert metal components and one or more fission products. At least a portion of the inert metal components are dissolved in the glass matrix and increase its durability. As a result, the waste immobilising medium is highly durable and leach resistant and is suitable for long term storage of radioactive waste. The inert metal components preferably comprise iron, nickel and chromium.

摘要翻译： 本发明涉及用于封装放射性废物的固定介质。 废物固定介质具有硅酸钠基玻璃基质，其中含有放射性废物，其中废物包含一种或多种惰性金属组分和一种或多种裂变产物。 惰性金属组分的至少一部分溶解在玻璃基质中并增加其耐久性。 因此，废物固定介质具有高度的耐久性和耐水浸性，适用于放射性废物的长期储存。 惰性金属组分优选包含铁，镍和铬。

公开(公告)号：US07078581B1

公开(公告)日：2006-07-18

申请号：US10129310

申请日：2000-11-08

申请人： Ewan Robert Maddrell ,  Melody Lyn Carter

发明人： Ewan Robert Maddrell ,  Melody Lyn Carter

IPC分类号： G21F9/34 ,  G21F9/28 ,  G21F9/20

CPC分类号： G21F9/162

摘要： A ceramic waste immobilizing material for the encapsulation of high level radioactive waste (HLW), e.g. resulting from the reprocessing of irradiated nuclear fuel. The ceramic waste immobilising material enables waste ions from at least fission products in irradiated nuclear fuel to be dissolved in substantially solid solution form. The ceramic waste immobilising medium has a matrix comprising phases of hollandite, perovskite and zirconolite in which the waste ions are dissolved. The invention also includes a method of immobilizing HLW from reprocessed nuclear fuel assemblies comprising the steps of mixing a liquor containing the HLW with a precursor material comprising oxides or oxide precursors of at least titanium, calcium and barium to form a slurry, drying the slurry, and calcining the dried slurry under a reducing atmosphere to form a powder comprising 30–65 weight % waste.

摘要翻译： 用于封装高放射性废物（HLW）的陶瓷废物固定材料，例如， 由辐射核燃料的后处理造成的。 陶瓷废物固定材料使来自辐射核燃料中的至少裂变产物的废物离子以基本上固溶的形式溶解。 陶瓷废物固定介质具有包括其中废离子溶解的地幔，钙钛矿和锆石的相的基体。 本发明还包括一种从再处理的核燃料组件固定HLW的方法，包括以下步骤：将含有HLW的液体与包含至少钛，钙和钡的氧化物或氧化物前体的前体材料混合以形成浆料，干燥浆料， 并在还原气氛下煅烧干燥的浆料以形成包含30-65重量％废物的粉末。