نتایج جستجو برای: rare earths
تعداد نتایج: 241550 فیلتر نتایج به سال:
The extraction and separation of five different rare-earth elements, La, Nd, Eu, Dy Yb, from an aqueous chloride solution non-aqueous solutions using the solvating extractant Cyanex 923 was investigated. As previous studies had demonstrated potential solvent (NASX) to refine rare earths ethylene glycol, structural analogues glycol (1,2-propanediol 1,3-propanediol) other polar organic solvents (...
Development of the effective technology for recovery critical rare-earth elements (REEs) from end-of-life permanent magnets is one important technological challenges. In this study, chemical and electrochemical leaching NdCeFeB was investigated in 0.5 mol/L sulfuric acid containing varying concentration oxalic acid. The influence H2C2O4 on efficiency morphological properties surface, as well co...
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