| 摘要 |
<p>841,860. Nuclear fuel processing. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Nov. 12, 1958 [Nov. 12, 1957], No. 35161/57. Class 39(4). A fissile or fertile oxide is recovered from a dispersion in a metal consisting wholly or predominantly of iron by melting the metal in an inert atmosphere so that the oxide collects on the surface of the molten metal, and separating the oxide mechanically. The metal may be melted in a vessel provided with a spout connected to the bottom of the vessel, so that pure molten metal may be continuously withdrawn, the oxide being removed by vacuum suction. Alternatively the metal may be solidified before separation of the oxide. Oxide of uranium, plutonium, and thorium may be separated from pure iron, cast iron, or mild steel by melting in a graphite vessel in an atmosphere of argon. The Provisional Specification refers to the removal of carbides, silicates, and beryllides of uranium and plutonium, and the range of metals is extended to include aluminium, zirconium and beryllium.</p> |
