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Rare earth elements (REEs) are a group of 17 elements including scandium, yttrium and 15 lanthanides. There are a number of applications for the REE in different industries, e.g. super magnets in electrical engines in vehicles and generators in wind turbines, fluorescent lights, catalysts for the automotive end petroleum industry. REEs are crucial concerning the rapidly developing clean energy applications and with the highest risk of supply. To meet the future demand, it is necessary to develop efficient, economi...

Extraction of rare earth elements (REE) from mining wastes may change their physical and chemical properties thus affecting their usefulness for reclamation. The aim of this work was to assess the usefulness for reclamation of mine wastes used for REE production. Samples of mine wastes after an experimental benefication process (n=6) were delivered from Kankberg mine, Sweden. The samples were measured for organic matter (OM) content, specific gravity, maximum water holding capacity (WHC), texture, pH and electric ...