TY - JOUR
T1 - Recovery of neodymium from a mixture of magnet scrap and other scrap
AU - Takeda, Osamu
AU - Okabe, Toru H.
AU - Umetsu, Yoshiaki
N1 - Funding Information:
The authors are grateful to Professor E. Kasai and Dr. T. Uda for their kind support during this project. The authors are indebted to Mr. M. Horisawa (Santoku Co. Ltd.) and Mr. K. Hirota (Shin-etsu Chemical Co. Ltd.) for supplying the Nd–Fe–B magnet scrap samples. This work was financially supported by a Grant-in-Aid for Scientific Research (B) from the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan (Project ID #1255206). Osamu Takeda is grateful for the financial support provided by a Grant for 21st Century COE Program “Human-Friendly Materials based on Chemistry” from the MEXT.
PY - 2006/2/9
Y1 - 2006/2/9
N2 - A novel neodymium (Nd) extraction process was devised and its feasibility was demonstrated in order to establish an environment-friendly process that combined scraps containing valuable metals. The newly developed device can simultaneously accomplish continuous extraction of Nd metal from scraps, re-extraction of magnesium (Mg) from Mg-Nd alloy, and finally, recovery of pure Mg. As a result, Nd metal of 98% purity was directly recovered from magnet scraps under certain conditions. Major process parameters, such as Mg/scrap mass ratio and extraction temperature, were investigated in order to evaluate the optimum conditions. The results of the investigated process indicated the possibility of extracting Nd metal directly from magnet scraps.
AB - A novel neodymium (Nd) extraction process was devised and its feasibility was demonstrated in order to establish an environment-friendly process that combined scraps containing valuable metals. The newly developed device can simultaneously accomplish continuous extraction of Nd metal from scraps, re-extraction of magnesium (Mg) from Mg-Nd alloy, and finally, recovery of pure Mg. As a result, Nd metal of 98% purity was directly recovered from magnet scraps under certain conditions. Major process parameters, such as Mg/scrap mass ratio and extraction temperature, were investigated in order to evaluate the optimum conditions. The results of the investigated process indicated the possibility of extracting Nd metal directly from magnet scraps.
KW - Extraction
KW - Magnesium
KW - Neodymium
KW - Rare earth magnet scrap
KW - Recycling
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U2 - 10.1016/j.jallcom.2005.04.094
DO - 10.1016/j.jallcom.2005.04.094
M3 - Conference article
AN - SCOPUS:31144447272
SN - 0925-8388
VL - 408-412
SP - 387
EP - 390
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
T2 - Proceedings of the Rare Earths'04 in Nara, Japan
Y2 - 7 November 2004 through 12 November 2004
ER -