Separation of the core of a uranium fuel element from its envelope

摘要

1,129,698. Separating the cores and envelopes of uranium fuel elements. S. RAVIV, E. RABINOVTZ and S. MALKIELY. Sept.28, 1967, No.44103/67. Heading C7B. The core of a uranium fuel element is separted from its envelope by inserting the element into a nitric acid bath having a concentration of 7 - 12N, the uranium core forming the cathode in an electrolytic circuit, through which current is allowed to flow until the core is sufficiently loosened from the envelope (electro-dissolution of the uranium taking place at the contact surface of the two metals) and extracting the core from the envelope.