Process for the treatment of a purge solution particularly inten

Details Process for the treatment of a purge solution particularly inten Process for the treatment of a purge solution particularly inten

1984-04-24

1985-12-10

Andrews, R. L.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Alkaline earth metal

204119, 2041823, C25C 116

Patent

active

045579083

ABSTRACT:
The invention relates to the treatment of purge solutions formed in the process of the extraction of zinc by electrolysis.
According to the invention, the purge solution, which consists of a part of the purified solution rich in zinc sulfate, is subjected to electrodialysis in the presence of an anion exchange membrane so that a catholyte is formed which is depleted in zinc and in sulfate and which contains magnesium. The catholyte can then be precipitated by neutralization, after recovery of the remaining zinc.
Application to the extraction of zinc from its ores.

REFERENCES:
patent: 3357823 (1967-12-01), Tuwiner
patent: 4030989 (1977-06-01), Atmore et al.
patent: 4108744 (1978-08-01), Bernat et al.
patent: 4171250 (1979-10-01), Eddleman

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