METHOD AND DEVICE FOR ELECTROREFINING SPENT NUCLEAR FUEL

摘要

PPROBLEM TO BE SOLVED: To provide a method and a device for electrorefining spent nuclear fuel which make it possible to load the spent nuclear fuel into an anode and recover anode residue and cathode precipitate in a normal operating condition and enable continuous operation and highly efficient treatment. PSOLUTION: The device for electrorefining the spent nuclear fuel 8 is equipped with an electrorefining container 2 stored with a molten salt 1 made by melting a salt such as chloride and fluoride at high temperature, the anode shaped like a basket or a perforated container which accommodates the spent nuclear fuel 8 and is submerged in the molten salt 1, a power supply circuit 10 which switches over the energization through the anode, a cathode 5 shaped like a column or a cylinder which is submerged in the molten salt 1 and is horizontally placed on the liquid level of it, a power supply device which passes a current between the anode and the cathode through the molten salt 1, a cathode rotator 6 which rotates the cathode 5 on the central axis and a scraper blade 7 which is in contact with the circumferential face of the cathode and scrapes down the precipitate containing uranium and transuranic elements precipitating on the circumferential face. PCOPYRIGHT: (C)2005,JPO&NCIPI