Recovering uranium from wet process phosphoric acid with alkylph

Details Recovering uranium from wet process phosphoric acid with alkylph Recovering uranium from wet process phosphoric acid with alkylph

1977-10-25

1981-03-24

Miller, Edward A.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Radioactive metal

423 20, C01G 4300

Patent

active

042580153

ABSTRACT:
An improvement in the process for the recovery of uranium from a phosphoric acid solution derived from the acidification of uraniferous phosphate ores including the steps of reducing the uranium in the phosphoric acid solution to the uranous form and contacting the resulting solution with a liquid-liquid solvent extraction agent which is a mixture of mono- and di-(alkyl-phenyl) esters of orthophosphoric acid dissolved in an inert organic diluent, to effect recovery of the uranium with the liquid-liquid solvent extraction agent, the improvement being maintaining the proper ratio of the mono and di-components of the liquid-liquid solvent extraction mixture which comprises removing dissolved and entrained uranium process organics from the raffinate resulting from said liquid-liquid solvent extraction step and recycling the removed organics to said liquid-liquid solvent extraction step.

REFERENCES:
patent: 2859092 (1958-11-01), Bailes et al.
patent: 2860031 (1958-11-01), Gainstead
patent: 3711591 (1973-01-01), Hurst et al.
patent: 3835214 (1974-09-01), Hurst et al.
Murthy et al., "Study of Some Phenyl Phosphoric Acids for Extraction of Uranium from Phosphoric Acid", IAEA-SM-135/11, pp. 341-350 (1970).
Hurst et al. (III), Ind. Eng. Chem. Process Des. Develop., 13 (#3), 286-291 (1974). _

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