Abstract
The Army Research Laboratory (ARL) has an interest in the recovery and processing of rare earth elements. At Montana Tech, elevated temperature chlorination of rare earth oxides is presently being investigated as a potential methods leading to the selective separation and recovery of rare earth elements from mineral ores and concentrates. After preliminary evaluation, ytterbium oxide was selected as a representative surrogate material for more extensive chlorination studies. Methods used to determine the conversion and recovery include X-ray diffraction (XRD) and inductively coupled plasma (ICP) analysis. These data have been used to establish and confirm process conditions that consistently yield high conversion efficiencies. Based on the promising results, further experimentation is underway to ascertain the metallurgical response of other rare earth oxides and carbonates to the roasting process. The end goal is to create a robust process for industrial application that has greater efficiency and reduced costs as compared to current practice.
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References
U.S. Department of the Interior and U.S. Geological Survey, “Mineral Commodity Summaries 2014,” 28 February 2014. [Online]. Available: http://minerals.usgs.gov/minerals/pubs/mcs/2014/mcs2014.pdf. [Accessed 23 September 2014].
G. Meyer and P. Ax, “AN ANALYSIS OF THE AMMONIUM CHLORIDE ROUTE TO ANHYDROUS RARE-EARTH METAL CHLORIDES,” Materials Research Bulletin, vol. 17, pp. 1447–1455, 1982.
F. J. Pomiro, G. G. Fouga and A. E. Bohe, “Kinetic Study of Europium Oxide Chloriniation,” The Minerals, Metals & Materials Socielty and ASM International, vol. 44B, pp. 1509–1519, 2013.
E. A. Brocchi, R. Navarro and F. Moura, “A chemical thermodyanamics review applied to V2O5 Chlorination,” Thermochimica Acta, vol. 559, pp. 1–16, 2013.
M. V. Bosco, G. G. Fouga and A. E. Bohe, “Kinetic study of neodymium oxide chlorination with gaseous chlorine,” Thermochimica Acta, vol. 540, pp. 98–106, 2012.
J. P. Gaviria, L. G. Navarro and A. E. Bohe, “Chlorination of Lanthanum Oxide,” The Physical Journal of Chemistry, vol. 116, pp. 2062–2070, 2012.
Outotec Research, “HSC 7.0,” Outotec Research, Antti Roine, 2014.
D. Bell, Vapor Phase Removal of Rare Earth Oxides for the Use with Spent LWR Fuel Recycling, M.S. Thesis, Montana Tech, 2012.
Stat-Ease, Inc., “Design Expert 9.0,” Stat-Ease, Inc., Minneapolis, MN, 2014.
M. R. Stefania Massari, “Rare earthelementsascriticalrawmaterials:Focusoninternationalmarkets,” Resource Policy, no. 38, pp. 36–43, 9 August 2013.
J. H. a. L. Niinisto, “Thermoanalytical Study on the Reactions of Selected Rare Earth Oxides with Ammonium Halides,” Thermochimica Acta, no. 37, pp. 155–160, 4 September 1980.
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Gaede, D.W. et al. (2015). Chlorination Roasting of Rare Earth Element Oxides. In: Battle, T.P., et al. Drying, Roasting, and Calcining of Minerals. Springer, Cham. https://doi.org/10.1007/978-3-319-48245-3_2
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DOI: https://doi.org/10.1007/978-3-319-48245-3_2
Publisher Name: Springer, Cham
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Online ISBN: 978-3-319-48245-3
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