| 摘要 |
<p>Uranium is recovered from an aqueous NH4F solution containing U and Zr by adding a soluble peroxide, e.g. 30% H2O2, to ppt. U peroxide (UO4.4H2O). The initial solution may be obtained by dissolving a Zr-clad UO2 fuel or a Zr-U alloy in 4-6 M. NH4F/sBNH4NO3, and should have a maximum U concn. of 0.001 M. The temperature of pptn. may be 25-60 DEG C., and sufficient peroxide added to make the solution 0.1-3 M. in peroxide.</p> |
