Performance of the mesh-type liquid cadmium cathode structure for the electrodeposition of uranium from the molten salt
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Seungwoo Paek
Abstract
A mesh-type liquid cadmium cathode (LCC) structure has been devised to improve the performance of the electro-winning process for the recovery of actinides in a molten chloride system. For the verification of its performance, electrodeposition experiments of uranium from the molten LiCl-KCl-UCl3 salt were conducted at 773 K for different current densities using the mesh-type LCC structure. Uranium was successfully collected over 5ߙwt.ߙ% in the LCC without growing uranium dendrites. The mesh-type LCC structure prevented the uncontrolled growth of uranium dendrites into the electrolyte phase above the cadmium surface and caused the LCC deposit to accumulate at the higher in the cadmium phase over uranium solubility in cadmium. After cooling the LCC crucible, its solid deposits were identified as an intermetallic compound UCd11 by EPMA and XRD analysis. The cathode potential profiles from the electrochemical experiments and the chemical structure of the LCC deposits showed that it could be applied practically to recover the actinides above their solubility in cadmium.
© by Oldenbourg Wissenschaftsverlag, Daejeon, 305-353, Korea, Germany
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Articles in the same Issue
- New cross section measurements for the production of the Auger electron emitters 77Br and 80mBr
- Development of a SISAK extraction system for chemical studies of element 108, hassium
- Spectroscopic study on the mononuclear hydrolysis species of Pu(VI) under oxidation conditions
- Origin assessment of uranium ore concentrates based on their rare-earth elemental impurity pattern
- Performance of the mesh-type liquid cadmium cathode structure for the electrodeposition of uranium from the molten salt
- Temperature effect on U(VI) sorption onto Na-bentonite
- Rapid separation method for actinides in emergency soil samples
- Effect of solvent on the extraction of lanthanides with picrolonic acid
- Separation and purification of no-carrier-added arsenic from bulk amounts of germanium for use in radiopharmaceutical labelling
- Labelling and optimization of PHOTOFRIN® with 99mTc
- Appreciation to Referees