Research progress on the recycling and utilization of Nd-Fe-B wastes

A lot of N-Fe-B wastes, which contain a large number of valuable elements such as rare earth, are produced in China each year. Recycling them helps a lot when it comes to coping with the rare earth resource shortage, environmental pollution and resources waste in China. The green recycling of them presents a promising prospect. Therefore it is of great necessity to do a more comprehensive and systematic study on it. In order to provide guidance and help for the research of efficient recycling of Nd-Fe-B wastes process, both traditional and new recycling methods are reviewed and the characteristics of the new methods are summarized as well in this paper.