Method of removing niobium from uranium-niobium alloy

Details Method of removing niobium from uranium-niobium alloy Method of removing niobium from uranium-niobium alloy

1989-11-13

1992-01-28

Hunt, Brooks H.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group vb metal

423 18, 423 20, 423 68, 423592, 75353, C01G 3300, C22B 3420

Patent

active

050842536

ABSTRACT:
A method of removing niobium from a uranium-niobium alloy includes dissolving the uranium-niobium alloy metal pieces in a first aqueous solution containing an acid selected from a group consisting of HCl and H.sub.2 SO.sub.4 and a fluoboric acid as a catalyst to provide a second aqueous solution which includes uranium (U.sup.+4), acid radical ions, the acids and insolubles including uranium oxides and niobium oxides; adding nitric acid to the insolubles to complete the oxidation of the niobium oxides to yield niobic acid and further solubilizing thr uranium oxide; and separating the niobic acid, nitric acid and solubilized uranium oxides.

REFERENCES:
patent: 4446116 (1984-05-01), Krismer et al.
patent: 4451438 (1984-05-01), Floeter et al.
patent: 4699769 (1987-10-01), Pollock
patent: 4837375 (1989-06-01), Pollock

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