发明名称 |
Conversion of depleted uranium hexafluoride to a solid uranium compound |
摘要 |
A process for converting UF6 to a solid uranium compound such as UO2 and CaF. The UF6 vapor form is contacted with an aqueous solution of NH4OH at a pH greater than 7 to precipitate at least some solid uranium values as a solid leaving an aqueous solution containing NH4OH and NH4F and remaining uranium values. The solid uranium values are separated from the aqueous solution of NH4OH and NH4F and remaining uranium values which is then diluted with additional water precipitating more uranium values as a solid leaving trace quantities of uranium in a dilute aqueous solution. The dilute aqueous solution is contacted with an ion-exchange resin to remove substantially all the uranium values from the dilute aqueous solution. The dilute solution being contacted with Ca(OH)2 to precipitate CaF2 leaving dilute NH4OH.
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申请公布号 |
US6303090(B1) |
申请公布日期 |
2001.10.16 |
申请号 |
US20000580991 |
申请日期 |
2000.05.17 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE UNITED STATES DEPARTMENT OF ENERGY |
发明人 |
ROTHMAN ALAN B.;GRACZYK DONALD G.;ESSLING ALICE M.;HORWITZ E. PHILIP |
分类号 |
C01F11/22;C01G43/01;C01G43/025;(IPC1-7):C01G43/00 |
主分类号 |
C01F11/22 |
代理机构 |
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