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- Title
Separation of the heavy and light rare earth metals concentrate after sulfuric acid eudialyte concentrate treatment.
- Authors
Tatiana, Litvinova
- Abstract
It was found, that determinant factor for eudialyte decomposition index is the molar ratio of F: Zr. Fluorite adding provide hafnium and zirconium extraction in to solution not less than 98%. Destruction of silica gel structure provides increasing of heavy REM extraction from 56 to 90%. Light REM remain in the silica residue by calcium isomorphic replacing. The nature of siliceous sediment allows to perform fractionation and concentration section to obtain a fraction of pure silica, loparite fraction, gypsum fraction and fraction contain of calcium sulfate, and light REM mixture with containing at least 70% of rare earth.
- Subjects
RARE earth metals; HEAVY metals; EUDIALYTE; CHEMICALS; OXIDES; HAFNIUM
- Publication
FOG - Freiberg Online Geoscience, 2015, Vol 39-42, p159
- ISSN
1434-7512
- Publication type
Article