MOLTEN-SALT ELECTROLYSIS METHOD

摘要

PURPOSE:To improve the current efficiency in the title electrolysis by increasing the electric potentials or an anode chamber and a diaphragmatic cathode to prevent a bypass current causing anode-anode chamber electrolysis in the electrolytic cell of an Li chloride molten salt. CONSTITUTION:A metallic diaphragm 9 is provided between an anode 3 and a cathode 4. The anode chamber 7 is connected to the upper end of the diaphragm 9. A collector 10 for Li is provided on the outside of the anode chamber 7 and at the upper part of the anode 3. In such an electrolytic cell, a DC voltage is independently impressed on the diaphragm 9 and the anode chamber 7 to increase the potential for the cathode 4. The Li deposited on the diaphragm 9 and the anode chamber 7 are dissolved and moved. Electrolysis is carried out while blowing Cl2 into the liq. under the bath surface in the vicinity of the main destinations of the Li to be moved other than the cathode 3.