Journal
NUCLEAR ENGINEERING AND TECHNOLOGY
Volume 46, Issue 3, Pages 395-406Publisher
KOREAN NUCLEAR SOC
DOI: 10.5516/NET.06.2013.082
Keywords
Pyroprocessing; Cold Finger; Crystallization; Fission Product; Separation
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Funding
- Laboratory Directed Research and Development Program of Idaho National Laboratory
- Department of Energy Idaho Operations Office [DE-AC07-051D14517]
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This study provides a fundamental understanding of a cold finger melt crystallization technique by exploring the heat and mass transfer processes of cold finger separation. A series of experiments were performed using a simplified LiCl-CsCl system by varying initial CsCl concentrations (1, 3, 5, and 7.5 wt%), cold finger cooling rates (7.4, 9.8, 12.3, and 14.9 L/min), and separation times (5, 10, 15, and 30 min). Results showed a potential recycling rate of 0.36 g/min with a purity of 0.33 wt% CsCl in LiCl. A CsCl concentrated drip formation was found to decrease crystal purity especially for smaller crystal formations. Dimensionless heat and mass transfer correlations showed that separation production is primarily influenced by convective transfer controlled by cooling gas flow rate, where correlations are more accurate for slower cooling gas flow rates.
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