Molten salt electrolysis device

A rotational shaft is disposed vertically downwardly from an upper portion so as to be immersed in a liquid metal in a vessel, impellers for stirring the liquid metal are disposed on the lower portion of the rotational shaft, and a cylindrical body is disposed in the inside of the vessel so as to surround the impellers. When the rotational shaft is rotated, the impellers suck the liquid metal upwardly from the lower portion of the cylindrical body and flow the metal from the upper portion to cause a downwarding stream on the outside of the cylindrical body. As a result, materials reduced and deposited on the upper surface of a liquid metal cathode along with the stream of the liquid metal are precipitated effectively on the lower portion of the vessel. In addition, since a liquid metal with no deposition of uranium is always frown over from the upper portion of the cylindrical body, growth of uranium on the surface of the cathode of liquid metal is prevented, so that uranium, plutonium and transuranium elements can be recovered stably by electrolytic reduction. (N.H.)