发明名称 |
Process for the recuperation of uranium present in phosphatic compounds. |
摘要 |
<p>1. A process for recovering the uranium present in phosphate compounds by means of an organic phase containing a dialkyl-pyrophosphoric acid, characterized in that said organic phase also contains at least one mol of a solubilising agent for uranium ammonium dialkyl-pyrophosphate per mol of dialkyl-pyrophosphoric acid, and in that the process comprises the following steps, carried out at a temperature not exceeding 50 degrees C : a) bubbling anhydrous ammonia gas into the organic phase already charged with uranium, to precipitate the ammonium salt of the excess dialkyl-pyrophosphoric acid ; and, b) effecting a liquid-solid separation to separate from the organic phase the ammonium salt of the dialkyl-pyrophosphoric acid precipitated in the course of the previous step a), said solubilising agent for the uranium ammonium dialkyl-pyrophosphate being a liposoluble compound which possesses electron pairs capable of forming hydrogen bonds with the pyrophosphoric acid diesters.</p> |
申请公布号 |
EP0011516(A1) |
申请公布日期 |
1980.05.28 |
申请号 |
EP19790400627 |
申请日期 |
1979.09.07 |
申请人 |
COMPAGNIE FRANCAISE DES MINERAIS D'URANIUM |
发明人 |
DEMARTHE, JEAN-MICHEL;SOLAR, SERGE |
分类号 |
C22B60/02;(IPC1-7):01G43/00;22B60/02 |
主分类号 |
C22B60/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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