Rare earth elements

- Nov 14, 2017 -

According to the structure and physico-chemical properties of the rare-earth atomic electron layers and their different ionic radii in minerals, they can produce different characteristics. Seventeen kinds of rare earth elements are usually divided into two groups:

Rare earth and materials

Light rare earths include: lanthanum, cerium, praseodymium, neodymium, acenaphthene, samarium, europium, gadolinium.

Heavy rare earths include: terbium, dysprosium, holmium, erbium, gallium, ytterbium, gallium, scandium, yttrium.

Classified by mineral features:

Group of cerium (light rare earth) - lanthanum, cerium, praseodymium, neodymium, acenaphthene, samarium and europium;

Yttrium group (heavy rare earth) - gadolinium, terbium, dysprosium, holmium, erbium, acenaphthene, ytterbium, gallium and scandium.

Separation by Extraction Category: rare earth elements in the periodic table position

Light rare earth (P204 weak acidity extraction) - Lanthanum, Cerium, Praseodymium, Neodymium;

Medium rare earth (P204 low acidity extraction) - samarium, europium, gadolinium, terbium and dysprosium;

Heavy rare earth (acidity extraction in P204) - holmium, erbium, gallium, ytterbium, gallium, yttrium.


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