Abstract
Rare earth electrolysis from fluoride melts has a lot in common with aluminium electrolysis; however, there are significant differences that need to be understood and investigated in order to develop efficient process control. A laboratory setup was developed to efficiently trap gases and obtain a mass balance of the components in the gas phase to understand the anode reactions. Using the described setup with a NdF3-LiF electrolyte, it was possible to concentrate the off-gas (CO and CO2) to approximately 10% facilitating increased sensitivity of PFC components. The laboratory cell produced metal, and the metal yield was 83% based on mass balance of CO + CO2. The results are also discussed in context of results obtained in a small pilot cell designed and operated for metal production.
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References
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© 2024 The Minerals, Metals & Materials Society
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Kjos, O.S. et al. (2024). Gas Evolution During Nd and DyFe Electrowinning. In: Forsberg, K., et al. Rare Metal Technology 2024. TMS 2024. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-031-50236-1_32
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DOI: https://doi.org/10.1007/978-3-031-50236-1_32
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