Recovery of uranium and plutonium values from aqueous solutions of ammonium fluoride,particularly from zirflex-type waste solutions

摘要

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. NH4FsBNH4NO3, 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.