C - Chemistry – Metallurgy – 01 – G
Patent
C - Chemistry, Metallurgy
01
G
53/218, 260/461.
C01G 43/00 (2006.01)
Patent
CA 1144174
Abstract A process is described for the recovery of uranium values from phosphoric acid utilizing an alkyl pyrophosphoric acid (APPA) primary extractant. After extracting the uranium from the phosphoric acid, the APPA extractant is deactivated by heating and the uranium values stripped into a phosphoric acid strip solution containing ferric ion as a salt- ing agent. The uranium values nay then be re- extracted directly from this stripping solution without adjustment of its concentration into a dialkyl phosphoric acid trialkyl phosphine oxide synergistic extractant from which a relatively pure yellow cake is precipitated. A new procedure for preparing the requisite APPA primary extractants is also disclosed.
352631
Reese Stanton L.
Schroeder William E.
G. Ronald Bell & Associates
Unc Recovery Corporation
LandOfFree
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