Process for production of fine and ultrafine zinc powders by electrolysis in a basic medium

摘要

The present invention relates to a process for the production of fine and ultrafine powders of zinc by electrolyzing using a basic medium. A cathode coated with a film of varnish or silicon obtained from an aerosol is used. The electrolyte bath may be stirred during electrolysis by radiating it with ultrasonics. These ultra-sounds have an emission frequency on the order of 40 kHz. The initial concentration of the zinc in the bath is preferably limited to about 30 g/l.