| 摘要 |
<p>1,137,625. Separation of plutonium. UNITED STATES ATOMIC ENERGY COMMISSION. 21 June, 1966 [8 Feb., 1966], No. 27667/66. Heading G6R. Plutonium is separated from uranium by treatment with a molten magnesium alloy in which Pu but not U dissolves, contacting the alloy with a molten salt containing magnesium chloride to form plutonium chloride which dissolves in the molten salt, and contacting the molten salt with zinc alloy containing 2-10% by weight of magnesium, so as to form a Pu-Zn intermetallic precipitate, from which Pn may be recovered by distilling off the Zn. Contact of the molten salt with the two alloys may take place simultaneously. A tantalum crucible may be used, or the process carried out in an atmosphere of argon or helium. The Mg alloy may contain Cu, Cd, or Zn and the salt may comprise a mixture of MgCl 2 with LiCl or with NaCl and KCl. In the treatment of irradiated nuclear fuel, noble metal and refractory metal fission products remain in the Mg alloy. Carbide fuel is oxidized or chlorinated before treatment.</p> |
