PROCESS FOR PRODUCING METAL AND APPARATUS FOR PRODUCING METAL

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This invention provides a process for producing a metal by an electrolytic process for alkali metals, alkaline earth metals or rare earth metals(particularly metallic Ca), and an apparatus for producing a metal which is used in practicing the process. Electrolysis is carried out while circulating an electrolytic bath on a cathode (11) side within an electrolysis tank (10). The metal can be taken out while continuing the electrolysis by introducing the electrolytic bath on the cathode side into a regulation tank (15) for regulating the concentration of the metal in the bath, taking out a metal (18) having a necessary concentration from the regulation tank (15), and then returning the electrolytic bath (20) to the electrolysis tank (10). Preferably, a flow-type electrolysis tank, which can conduct electrolysis while allowing the electrolytic bath to flow in a single direction near the surface of a cathode, is used. This process can be carried out by an electrolysis tank, a circulation passage (13) for circulating the electrolytic bath on the cathode side, and an apparatus for producing a metal according to this invention provided with a regulation tank.