A Study on Molten Salt Electrorefining of Uranium Metal Using Low Carbon Steel Cathode

저 탄소강 음극을 사용한 금속우라늄의 용융염 전해정련에 관한 연구

  • Yang, Y.S. (Department of Chemical Engineering, Woosuk University) ;
  • Kang, Y.H. (Korea Atomic Energy Research Institute) ;
  • Hwang, S.C. (Korea Atomic Energy Research Institute)
  • Received : 1999.06.09
  • Accepted : 1999.11.30
  • Published : 1999.12.10

Abstract

In this paper, electrorefining of uranium metal was studied to develop pyrometallurgical processing technology in molten salt system. The reaction between uranium metal and $CdCl_2$ was taken about 3 hours and the uranium metal deposits were obtained in the form of dendrite grown on the cathode surface in every electrotransport experiment. The shapes of dendrite were changed according to the applied voltages. Current efficiency was decreased with the increase of current density. Deposition rate was not changed after 6 hours and its maxium was obtained at $100{\sim}150mA/cm^2$ of current density and about 75 rpm of stirring speed, respectively. Also, the current efficiency was increased with decrease of the pitch of spiral groove curved on cathode.

Keywords

electrorefining;eletrodeposition;molten salt;uranium metal

Acknowledgement

Supported by : 과학기술부

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