To provide a method for producing an electrolytic solution of zinc, which uses a zinc-containing substance having a high halogen content as a raw material, can easily remove the halogen with high productivity without using a dry process on the way, and can efficiently produce a high-purity crude electrolytic solution of zinc containing a low concentration of the halogen.
The method for producing the electrolytic solution of zinc comprises: a leaching step of leaching the zinc-containing substance which contains zinc and the halogen with an acid to obtain a crude extract (aqueous phase (A)); a solvent extraction step of stirring and mixing the crude extract (aqueous phase (A)) and a water-insoluble organic solvent (organic phase (A)) containing a zinc extractant to obtain an organic phase (B) containing zinc and a halogen, and a post extract (aqueous phase (B)) containing a halogen; and a back-extracting step of stirring and mixing the organic phase (B) containing zinc and the halogen and an electrolytic tailing solution (aqueous phase (E)) to make zinc recovered by a post back extract (aqueous phase (F)) which becomes the crude electrolytic solution of zinc.
COPYRIGHT: (C)2009,JPO&INPIT
Masami Ouchi
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