RT Journal Article
T1 Pyrometallurgical Treatment of Apatite Concentrate with the Objective of Rare Earth Element Extraction: 												Part I
A1 Sun, Tianming
A1 Kennedy, Mark William
A1 Yurramendi, Lourdes
A1 Aldana, Jose L.
A1 Del Rio, Carmen
A1 Arnout, Sander
A1 Tranell, Gabriella
A1 Aune, Ragnhild E.
AB Apatite, Ca5(PO4)3F, concentrate from LKAB in Kiruna, Sweden, has been characterized and pyrometallurgically treated using (i) silicon metal and fluxes to extract phosphorus and transition metals at 1600 °C (Part I publication), and (ii) carbon to extract phosphorus without fluxing at temperatures exceeding 1800 °C (Part II publication), with the ultimate objective to recover rare earth elements from the resulting slag/residue phases. A variety of methods (SEM/EDS, EPMA, DTA-TGA, Sessile drop, ICP-MS/OES, and XRD) have been used for the characterization and analysis of both the concentrate and reaction products. Elemental deportment, except for the rare earth metals, is broadly in line with the equilibrium thermodynamic predictions performed using HSC Chemistry®. Phase diagrams were predicted using FactSage® and a custom phosphate database to explain the observed melting/fluxing behaviors.
SN 2199-3823
YR 2017
FD 2017-12-01
LK https://hdl.handle.net/11556/3437
UL https://hdl.handle.net/11556/3437
LA eng
NO Sun , T , Kennedy , M W , Yurramendi , L , Aldana , J L , Del Rio , C , Arnout , S , Tranell , G & Aune , R E 2017 , ' Pyrometallurgical Treatment of Apatite Concentrate with the Objective of Rare Earth Element Extraction : Part I ' , Journal of Sustainable Metallurgy , vol. 3 , no. 4 , pp. 829-845 . https://doi.org/10.1007/s40831-017-0140-6
NO Publisher Copyright: © 2017, The Author(s).
NO The authors would like to thank their coparticipants in this EU-funded project (Grant FP7-603564—REEcover) for their assistance during the performance of the present work. Concerning apatite concentrate characterization in Chapter II, thanks are offered to: J.R. Tolchard for his help during the XRD analyses; Y. Yu and M.P. Raanes for their advice and work with SEM–EDS and EPMA; T. Anzjøn and S. Bao for their help with the wetting and DTA-TGA-MS analyses; and T. Schanche and D. Leroy for their experimental assistance. The primary author also would like to offer his thanks to the Chinese Scholarship Council (CSC) for funding his Ph.D. research. Acknowledgements The authors would like to thank their copartic-ipants in this EU-funded project (Grant FP7-603564—REEcover) for their assistance during the performance of the present work. Concerning apatite concentrate characterization in Chapter II, thanks are offered to: J.R. Tolchard for his help during the XRD analyses; Y. Yu and M.P. Raanes for their advice and work with SEM–EDS and EPMA; T. Anzjøn and S. Bao for their help with the wetting and DTA-TGA-MS analyses; and T. Schanche and D. Leroy for their experimental assistance. The primary author also would like to offer his thanks to the Chinese Scholarship Council (CSC) for funding his Ph.D. research.
DS TECNALIA Publications
RD 30 jul 2024