Separation process for the recovery of uranium from wet-process

Details Separation process for the recovery of uranium from wet-process Separation process for the recovery of uranium from wet-process

1983-07-25

1985-10-01

Miller, Edward A.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Radioactive metal

C01G 4300

Patent

active

045445303

ABSTRACT:
A synergistic extractant combination consisting of di(2-ethylhexyl) phosphoric acid (D2EHPA) and dibutyl butyl phosphonate (DBBP) in kerosene is employed in a two-cycle separation process for the recovery of uranium from wet-process phosphoric acid. The addition of the sulfuric acid and water scrubbing steps for the recycled extractant provides no disadvantages with respect to the comtamination and dilution by the ammonium ion and water to the phosphoric acid and also no precipitation occurs in the second cycle extraction step. The advantages of this process are lower chemical cost, higher product purity and better phase separation in comparison with the previous process.

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Blake et al, "Synergistic Uranium Extractants: Combination of Neutral Organophosphorous Compounds with Dialkylphosphorus Acids", OXNL-2259, Oak Ridge National Lab, (1959).
Hurst et al, Ind. Eng. Chem. Process Des. Develop., 11 (#1), pp. 122-128 (1972).

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