연속식 전해정련에 의한 우라늄 회수기술 개발

The Development of U-recovery by Continuous Electrorefining

김정국, 박성빈, 황성찬, 강영호, 이성재, 이한수

Abstract

The electrorefining process, one of main processes which are composed of pyroprocess to recover the useful elements from spent fuel, and the domestic development of electrorefiner have been reviewed. The electrorefiner is composed of an anode basket containing reduced spent fuel such as uranium, transuranic and rare earth elements, and a solid cathode, which are in LiCl-KCl eutectic electrolyte. Oxidation (dissolution) reaction occurs on the anode and a pure uranium is electrochemically reduced (deposited) on the solid cathode. By application of graphite cathode, which has a self-scrapping characteristics for the uranium deposits, and a recovery of the fallen deposits by a screw conveyer, a high-throughput continuous electrorefiner with a capacity of 20 kgU/day has been developed.

Key Words : 전해정련, 사용후핵연료, 우라늄, 전해석출, 흑연음극, Electrorefining, Spent fuel, Uranium, Electrodeposition, Graphite cathode

Reference

JNFCWT

Online Submission

Korean Radioactive
Waste Society (KRS)

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