Extraction of Rare Earth Elements from Permanent Magnet Scraps by FeO–B2O3 Flux Treatment
作者： Yuyang Bian , Shuqiang Guo , Lan Jiang , Kai Tang , Weizhong Ding
DOI: 10.1007/S40831-015-0009-5
关键词:
摘要: In order to recover the rare earth elements (REEs) from neodymium permanent magnet scraps, Fe2O3, B2O3, and FeO–B2O3 fluxes were designed extract REEs. The REEs containing oxides successfully separated Fe-based metals at temperatures of 1,673, 1,773, 1,823 K. A mechanism for extraction has been proposed based mainly on experimental observations using flux FeO·B2O3 1,573 Effects temperature reaction time also investigated. results have shown that increasing prolonging holding help reduction B2O3 contents in oxide phase. show better efficiency. purity was 98.4 % produced by 2FeO·B2O3 ratios higher than 99.5 after treatment.
springer.com
paperity.org参考文章(24)
Thomas S. Key, Buckley Crist, Metastable states in alumina-rich La2O3:Al2O3 and Nd2O3:Al2O3 Journal of the American Ceramic Society. ,vol. 88, pp. 191- 195 ,(2004) , 10.1111/J.1551-2916.2004.00013.X
D.S. Edgley, J.M. Le Breton, S. Steyaert, F.M. Ahmed, I.R. Harris, J. Teillet, Characterisation of high temperature oxidation of NdFeB magnets Journal of Magnetism and Magnetic Materials. ,vol. 173, pp. 29- 42 ,(1997) , 10.1016/S0304-8853(97)00189-3
M ZINKEVICH, Thermodynamics of rare earth sesquioxides Progress in Materials Science. ,vol. 52, pp. 597- 647 ,(2007) , 10.1016/J.PMATSCI.2006.09.002
Hideaki Hamano, Yasushige Kuroda, Yuzo Yoshikawa, Mahiko Nagao, Adsorption of Water on Nd2O3: Protecting a Nd2O3 Sample from Hydration through Surface Fluoridation Langmuir. ,vol. 16, pp. 6961- 6967 ,(2000) , 10.1021/LA0001169
Tetsuya Uda, Recovery of rare earths from magnet sludge by FeCl2 Materials Transactions. ,vol. 43, pp. 55- 62 ,(2002) , 10.2320/MATERTRANS.43.55
Osamu Takeda, Toru H. Okabe, Yoshiaki Umetsu, Recovery of neodymium from a mixture of magnet scrap and other scrap Journal of Alloys and Compounds. ,vol. 408-412, pp. 387- 390 ,(2006) , 10.1016/J.JALLCOM.2005.04.094
G. Goller,, C. Toy,, A. Tekin,, C.K. Gupta,, The Production of Boron Carbide by Carbothermic Reduction High Temperature Materials and Processes. ,vol. 15, pp. 117- 122 ,(1996) , 10.1515/HTMP.1996.15.1-2.117
Koen Binnemans, Peter Tom Jones, Bart Blanpain, Tom Van Gerven, Yongxiang Yang, Allan Walton, Matthias Buchert, Recycling of rare earths: a critical review Journal of Cleaner Production. ,vol. 51, pp. 1- 22 ,(2013) , 10.1016/J.JCLEPRO.2012.12.037
B. Hallemans, P. Wollants, J. R. Roos, Thermodynamic assessment of the Fe-Nd-B phase diagram Journal of Phase Equilibria. ,vol. 16, pp. 137- 149 ,(1995) , 10.1007/BF02664851
O. Takeda, T.H. Okabe, Y. Umetsu, Phase equilibrium of the system Ag–Fe–Nd, and Nd extraction from magnet scraps using molten silver Journal of Alloys and Compounds. ,vol. 379, pp. 305- 313 ,(2004) , 10.1016/J.JALLCOM.2004.02.038