Process for recovery of zirconium and acid from spent etching so

Details Process for recovery of zirconium and acid from spent etching so Process for recovery of zirconium and acid from spent etching so

1984-11-01

1986-02-25

Carter, H. T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ivb metal

156642, 423390, C01G 2500

Patent

active

045728240

ABSTRACT:
In the manufacture of nuclear fuel tubes spent etching solutions containing nitric acid, zirconium, and hydrofluoric acid are produced as waste. A serial treatment process is employed to recover the zirconium and to restore the solution to the desired acid concentration. These processes include solvent extraction for zirconium removal and aqueous removal using evaporation or distillation.

REFERENCES:
patent: 3788915 (1974-01-01), Gulla
patent: 3956112 (1976-05-01), Lee et al.
patent: 3957504 (1976-05-01), Ho et al.
patent: 4200612 (1980-04-01), Lamaze
patent: 4233108 (1980-11-01), Tamura et al.
patent: 4252602 (1981-02-01), Krepler
patent: 4443414 (1984-04-01), Kim
Kim, B. M., "Method and Apparatus for Continuous Ion Exchange", U.S. patent application Ser. No. 407,963 filed Aug. 13, 1982.

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