Rückgewinnung Seltener Erden aus FeNdB-Dauermagneten mittels Feststoffchlorierung
Rückgewinnung Seltener Erden aus FeNdB-Dauermagneten mittels Feststoffchlorierung
复制标题
采用固体氯化法从 FeNdB 永磁体中回收稀土
DOI:
10.1002/cite.201600171
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发表时间:
2017
影响因子:
1.9
通讯作者:
M. Bertau
中科院分区:
文献类型:
--
作者:
T. Lorenz;P. Fröhlich;M. Bertau
Solid state chlorination with NH4Cl as chlorinating agent represents a new way for rare earth recovery from end‐of‐life‐magnets. Compared to hydrometallurgical recycling approaches this process provides a number of economic advantages. As a first step, solid state chlorination was adjusted with disused FeNdB magnets from a wind power plant. The SE yield of the chlorination step was optimized according to a 33‐Box‐Behnken design with varying temperature, time, and NH4Cl/magnet ratio. Likewise, the process profits from leaching with a sodium acetate/acetic acid buffer following the chlorination step.