Resolution of oil-in-water emulsions containing uranium
Patent
·
OSTI ID:5869774
A method of resolving oil-in-water emulsions resulting from the organic solvent extraction of uranium from aqueous acidic leach liquors which comprises treating the emulsions in accordance with the following steps: (a) adding to the emulsions a water-in-oil emulsion which contains from 2 to 50% by weight of a water-soluble acrylamide copolymer which contains from 5 to 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 water-soluble surfactant which is capable of inverting the water-in-oil emulsion which contains the polymer; and then (d) slowly mixing the treated oil-in-water emulsion for at least one-half hour to obtain good resolution thereof.
- Assignee:
- Nalco Chemical Co.
- Patent Number(s):
- US 4154698
- OSTI ID:
- 5869774
- Country of Publication:
- United States
- Language:
- English
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