Electrolytic method in diaphragm-type cell

A method for producing metals from a mineral, wherein the mineral is passed through a high oxidation-potential zone to a low oxidation-potential zone and is subjected to a leaching in the chloride-containing solution having acidic pH, comprising the following steps:

• (a) bringing the mineral into contact with the liquor, which has been fed from the low-oxidation potential zone into the high-oxidation potential zone, thereby at least partly leaching the metals of the mineral, and transferring the leached metals to the low-oxidation potential zone, thereby converting the atomic valence of leached metals to a low oxidation potential;
• (b) transferring the electrolyte from the low-oxidation potential zone to a diaphragm-electrolytic step, then performing electrolysis of the electrolyte in a diaphragm-type cell so as to form at least one metal and to enhance the oxidation potential of the electrolyte, and subsequently leaving the electrolyte from the electrolytic step, which electrolyte has higher oxidation-reduction potential than that transferred to the electrolytic step;
• and,
• (c) returning the electrolyte having the higher oxidation-reduction potential, to the high oxidation-potential zone of The leaching step (a), characterized in that The electrolyte of the step (c), containing Br− ions is withdrawn from below the anode and is retuned to the high oxidation potential zone of the leaching step (a).