Rare Earth Extraction, Separation, and Permanent Magnet Manufacturing
This research community focuses on the chemical and metallurgical processes required to extract rare earth elements from ores and industrial waste streams, separate them into pure grades, and manufacture high-performance permanent magnets.
The work centers on hydrometallurgical techniques, including acid leaching, solvent extraction, and ion exchange, to recover rare earths from primary ores and secondary sources like coal fly ash, red mud, and spent magnets. A significant portion of the literature addresses the synthesis and optimization of sintered neodymium-iron-boron (NdFeB) magnets, analyzing grain boundary diffusion and magnetic properties. The community also investigates selective recovery methods and adsorption processes to isolate specific elements from complex waste matrices, balancing extraction efficiency with environmental management of by-products.
The community constitutes 12.5% of all neodymium research, 6.5% of scandium research, and 2.4% of lanthanum research. Neodymium is also the element with the highest paper count within this group, with 2,723 papers.
The community comprises 23,278 papers, with the highest publication volume in the Journal of Magnetism and Magnetic Materials, Journal of Alloys and Compounds, and Hydrometallurgy.
Recent work continues to focus on the recovery of rare earth elements from phosphogypsum and coal gangue, as well as the development of biomass-based adsorption materials and bioleaching methods for processing ion-adsorption type ores and tailings.