| 摘要 |
<p>IN THE UNITED STATES PATENT OFFICE APPLICATION OF RODNEY H. DOFT FOR RESOLUTION OF OIL-IN-WATER EMULSIONS CONTAINING URANIUM A method of resolving oil-in-water emulsions resulting from the organic solvent extraction of uranium from aqueous acidic leach liquors which comprises treating said emulsions in accordance with the following steps: (a) adding to said emulsions a water-in-oil emulsion which contains from 2 - 50% by weight of a water-soluble acrylamide copolymer which contains from 5 - 50% by weight of a lower alkyl substituted tertiary aminoethyl methacrylate and quaternary ammonium salts thereof in an amount to provide at least 20 parts per million of the acrylamide copolymer;(b) adjusting the pH of the emulsion being treated with ammonia to at least 9;(c) adding to the ammonia treated emulsion a watersoluble surfactant which is capable of inverting the water-in-oil emulsion which contains the po!ymer; and then(d) slowly mixing the treated oil-in-water emulsion for at least one-half hour to obtain good resolution thereof.</p> |
