Scandinavian purification (Sc2O3)
Resources and extractive metallurgy of scandium
Article REF: M2357 V1
Scandinavian purification (Sc2O3)
Resources and extractive metallurgy of scandium

Authors : Pierre BLAZY, Virginie HERMANT

Publication date: March 10, 2013 | Lire en français

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6. Scandinavian purification (Sc2O3)

Concentrated scandin contains numerous impurities: lanthanides, Th, Fe, Mn, Al, Mg, Ca, Ba, etc. . The major difficulty is to remove the rare earths. They can be precipitated as double fluorides with potassium; or, by acidification, rare-earth oxalates can be formed in the presence of a complexing agent (EDTA) for scandium, which keeps it in solution. These operations then lead to a Sc 2 O...

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