C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
53/376
C22B 60/02 (2006.01) C22B 3/28 (2006.01) C22B 3/38 (2006.01)
Patent
CA 1086076
ABSTRACT A process is disclosed for the elimination of accumulated iron in the organic phase of a fluid-fluid extraction that contains di-2-ethyl-hexyl phosphoric acid. This process involves treating said organic phase with an aqueous acidic solution of chloride ions, subsequently extracting the iron with an anionic ion exchanger leaving the di-2-ethyl-hexyl phosphoric acid iron-free for subsequent re-use, and regenerating the anionic exchanger by treatment with water to provide a relatively concentrated aqueous ferric chloride solution. Di-2-ethyl-hexyl phosphoric acid is used commercially as a cationic exchanger in the extraction of hexavalent uranium from sulfate solutions, in the separation of uranium and vanadium, in the separation and purification of rare earths, in the separation of cobalt and nickel, and in many other such applications.
262782
Abad Angel Luis Redondo
Diaz Nogueira Eduardo
Regife Vega Jose Manuel
Abad Angel Luis Redondo
Diaz Nogueira Eduardo
Macrae & Co.
Regife Vega Jose Manuel
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