Advances in the ACP Facility Electrochemical Reduction Process

Pyroprocessing Technology Development at Kaeri

“…Inspired by the recent development of electrochemical reduction technology for the metallization of oxides to valuable metals, there have been several attempts to realize the electrochemical reduction technology for the reduction of spent fuels [11][12]. The electrochemical reduction process for spent fuels operates in a bath of molten LiCl at 650ºC with small quantities of dissolved Li2O or CaCl2 at about 850ºC with small quantities of dissolved CaO.…”

New Oxygen-Evolving Inert Anode Made of Nickel Metal Applicable to Electrolytic Reduction of UO2 in LiCl–Li2O Melt

“…Therefore, the electrolytic reduction process in LiCl-Li 2 O melt at 923 K has been developed. [9][10][11][12][13][14][15][16][17][18][19][20][21] The cathode and anode reactions of the electrolytic reduction process are described as follows. Cathode:…”

“…[9][10][11][12][13][14][15][16][17][18] Moreover, pilot-scale UO 2 reduction tests were conducted with an eye to the commercial application of the electrolytic reduction process. [19][20][21] It is one of the crucial issues to develop a well-suited anode. The basic requirements for the anode material are the following: corrosion resistance to Cl − and O 2− ions, high current density for the discharge of O 2− ions, the insignificant contamination of the produced metal, physical stability at the operating temperature, resistance to thermal shock, and reasonable cost.…”

“…17,18 For most experiments in LiCl-Li 2 O melts, Pt metal has been used as the anode material. [9][10][11][12][13][14][15][16][17][18][19][20][21] At the Pt anode, O 2 is evolved with a high current density when the surface of Pt is covered with the Li 2 PtO 3 protective film formed by reaction (5). [24][25][26][27]…”