Process for recovering acids and zirconium contained in pickling

Details Process for recovering acids and zirconium contained in pickling Process for recovering acids and zirconium contained in pickling

1978-11-07

1980-04-29

Carter, Herbert T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ivb metal

210 37B, 423 82, C01G 2500

Patent

active

042006120

ABSTRACT:
A process for recovery of zirconium from pickling solutions which have been used to treat products formed of zirconium or zirconium-based alloys, the invention particularly provides for separating zirconium from the acids contained in such solutions. The present process comprises passing the used or spent pickling solutions which contain from 1 to 50 g/l of dissolved zirconium through a column of an anionic ion-exchange resin by means of which the zirconium ions are separated from fluoride and nitrate ions originally present in the pickling solutions. Approximately 90% of the zirconium contained in such solutions can be recovered according to the invention, it being further possible to recycle residual fluoride and nitrate ions which remain in the used pickling solutions.

REFERENCES:
patent: 2567661 (1951-09-01), Cyres
Danielsson, "Acta Cehemica Scandinavica", vol. 19, 1965, pp. 1859-1874.
Kim et al., "J. of Inorganic & Nuclear Chem.", vol. 33, 1971, pp. 3547-3555.

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