Reductive stripping process for the recovery of either or both u

Details Reductive stripping process for the recovery of either or both u Reductive stripping process for the recovery of either or both u

1978-11-16

1980-12-23

Sebastian, Leland A.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Radioactive metal

423 8, 423 63, C01G 4302, C01G 3100

Patent

active

042410274

ABSTRACT:
A process for the reductive stripping of an organic phase containing either or both uranium and vanadium. Said process comprising contacting said organic phase containing either or both uranium in the hexavalent state and vanadium in the pentavalent state with an aqueous solution containing a predetermined quantity of trivalent vanadium to reduce either or both the uranium and vanadium to a lower valence state which is not soluble in said organic phase. The reduced uranium and vanadium separate from the organic phase and collect in the aqueous solution from which it may be subsequently recovered. The process of this invention yields an aqueous strip solution containing fewer contaminates comprising undesirable alkali metals such as sodium and the like than other known chemical stripping processes. Further, the process limits the quantity of ferrous ions present in the system to alleviate the problem of sludge formation in subsequent treatment of the wet process acid to produce phosphate fertilizer.

REFERENCES:
patent: 3198599 (1965-08-01), Lewis et al.
patent: 3700415 (1972-10-01), Koerner, Jr. et al.
patent: 3711591 (1973-01-01), Hurst et al.
patent: 3836476 (1974-09-01), Baldwin et al.

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