| 摘要 |
<p>Uranium is recovered by a continuous process comprising adding a base to an acidic aqueous solution of a salt of uranium in a precipitation zone in te presence of an aliphatic C10-C5 monocarboxylic acid to form a precipitate of a compound of uranium, said monocarboxylic acid being present in amount sufficient to form a complex ion with the metal ions but insufficient to precipitate a salt of said monocarboxylic acid with the metal ions in the absence of said base, and withdrawing the precipitate from the precipitation zone. The process may be applied to plutonium (see Division G6) and to co-precipitation of U and Pu. The base is preferably NH4OH and the acid may be 0.1 to 5N acetic acid, in amount sufficient to form the ion (UO2Ac3]-. The consistency of the precipitate of ammonium diurate is improved by adding ammonium acetate to NH4OH which results in faster precipitation and less filtration resistance.</p> |
