Leaching of rare earth elements from bastnasite ore (second part)

  • Srećko R. Stopić RWTH Aachen University, Faculty for Georesourcen and Materials Engineering, IME Process Metallurgy and Metal Recycling, Aachen
  • Bernd G. Friedrich RWTH Aachen University, Faculty for Georesourcen and Materials Engineering, IME Process Metallurgy and Metal Recycling, Aachen
DOI: https://doi.org/10.5937/vojtehg67-20103
Keywords: rare earth elements, hydrometallurgy, bastnasite, acids,

Abstract


Dissolution of rare earth elements from bastnasite ore was studied using different leaching agents such as sulfuric acid, hydrochloric acid, acetic acid, citric acid and sodium hydroxide at 70°C, with 1mol/L, s/L ratio of 0.05 between 30 and 180 min. The one-step direct leaching strategy was applied under atmospheric pressure aiming at selective leaching of rare earth elements from a matrix of iron oxides in which the rare earth elements – carbonates & flourides – are embedded.

Author Biographies

Srećko R. Stopić, RWTH Aachen University, Faculty for Georesourcen and Materials Engineering, IME Process Metallurgy and Metal Recycling, Aachen

Associate Professor at the Institute for Process Metallurgy and Metal Recycling, RWTH Aachen University

Bernd G. Friedrich, RWTH Aachen University, Faculty for Georesourcen and Materials Engineering, IME Process Metallurgy and Metal Recycling, Aachen
Professor at the Institute for Process Metallurgy and Metal Recycling, RWTH Aachen University

References

Castor, S.B.,& Hedrick, J.B. 2006. Rare Earth Elements. In: Kogel, J.E., Trivedi, N.C., Barker, J.M., & Krukowski, S.T. Industrial Minerals and Rocks: Commodities, Markets, and Uses, 7th edition. SME. P.1568.

Feng, X., Long, Z., Cui, D., Wang, L., Huang, X., & Zhang, G. 2013. Kinetics of rare earth leaching from roasted ore of bastnaesite with sulfuric acid. Transactions of Nonferrous Metals Society of China, 23(3), pp.849-854. Available at: https://doi.org/10.1016/s1003-6326(13)62538-8.

Gupta, C.K., & Krishnamurthy, N. 2005. Extractive Metallurgy of Rare Earths. Boca Raton, Fl: CRC Press. chapter 1.2; ISBN 0415333407 9780415333405.

Kuburović, N., Golubović, A., & Babinčev, Lj. 2018. Development of new smart metal nanomaterials based on titanium-dioxide for photocatalytic and antimicrobial activities. Vojnotehnički glasnik/Military Technical Courier, 66(4), pp.771-835. Available at: https://doi.org/10.5937/vojtehg66-17261.

Stopić, S., & Friedrich, B, 2018. Leaching of rare earth elements with sulfuric acid from bastnasite ores.Vojnotehnički glasnik/Military Technical Courier, 66(4), pp.757-770. Available at: https://doi.org/10.5937/vojtehg66-17177.

Published
2019/03/24
Issue
Vol. 67 No. 2 (2019): April – June
Section
Original Scientific Papers

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