FREMGANGSMAATE VED BEHANDLING AV EN SPYLELOESNING, SPESIELT FOR EN FREMGANGSMAATE FOR EKSTRAKSJON AV SINK VED ELEKTROLYSE

摘要

The invention relates to the treatment of the solutions of purge of the extraction of zinc by electrolytic route. / p & & p & according to the invention, the solution of purging is constituted by a portion of the solution purified rich in zinc sulfate, and it is subjected to a electrodialysis in the presence of an anionic membrane, so as to form a catholyte is depleted in zinc and magnesium sulfate and containing the. This latter can then be precipitate by neutralization, after recovery of the remainder. / p & & p & application is the extraction of the zinc of its ores.