Patent Number: 
Section: claims

1. A method for recovery of residual actinide elements from a chloride molten salt, comprising:conducting electrolysis using a liquid cadmium cathode (LCC) in a chloride molten salt that is formed after electro-refining and/or electro-winning of a spent nuclear fuel and that contains rare-earth elements as well as actinide elements;electro-depositing the actinide elements contained in the chloride molten salt on the LCC to reduce a concentration of the actinide elements in the chloride molten salt while co-electro-depositing rare-earth elements contained in the chloride molten salt on the LCC;stepwise adding a CdCl2 oxidant to the chloride molten salt containing the LCC with co-deposited actinide and rare-earth elements to oxidize selectively only the rare-earth elements co-deposited with the actinide elements on the LCC, thereby forming rare-earth chlorides in the chloride molten salt; andrecovering actinide elements deposited on the LCC. 2. The method according to claim 1, wherein the chloride molten salt is a LiCl—KCl eutectic salt. 3. The method according to claim 1, further comprising heating the chloride molten salt to 500 to 700° C. to melt the same, before the electrolysis process using the LCC in the chloride molten salt. 4. The method according to claim 1, wherein the electrolysis process using the LCC in the LiCl—KCl eutectic salt is conducted at a current density of 10 to 100 mA/cm2.