发明授权
US4059671A Method for increasing the lifetime of an extraction medium used for
reprocessing spent nuclear fuel and/or breeder materials
失效
用于提高用于再加工乏核燃料和/或育种材料的提取介质寿命的方法
- 专利标题： Method for increasing the lifetime of an extraction medium used for reprocessing spent nuclear fuel and/or breeder materials
- 专利标题（中）： 用于提高用于再加工乏核燃料和/或育种材料的提取介质寿命的方法
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申请号： US624107申请日： 1975-10-20
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公开(公告)号： US4059671A公开(公告)日： 1977-11-22
- 发明人: Helmut Schmieder , Ludwig Stieglitz
- 申请人： Helmut Schmieder , Ludwig Stieglitz
- 申请人地址： DT Karlsruhe
- 专利权人： Gesellschaft fur Kernforschung m.b.H.
- 当前专利权人： Gesellschaft fur Kernforschung m.b.H.
- 当前专利权人地址： DT Karlsruhe
- 优先权： DT2449589 19741018
- 主分类号： B01D11/04
- IPC分类号： B01D11/04 ; G21C19/46
摘要：
A method is provided for increasing the lifetime of an extraction medium containing an organophosphorus acid ester and a hydrocarbon and being used for reprocessing spent nuclear fuel and/or breeder materials. Impurities resulting from chemical and/or radiolytic decomposition and interfering compounds of such impurities with radionuclides are removed from the extraction medium by bringing the extraction medium, after use, into intimate contact with an aqueous hydrazine hydrate solution having a concentration of between about 0.1 molar and about 1.0 molar at a temperature between about 20.degree. C to about 75.degree. C. The aqueous hydrazine hydrate solution is then separated from the extraction medium.
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