Processing of ores containing rare-earth elements

C - Chemistry – Metallurgy – 22 – B

Patent

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C22B 3/08 (2006.01) C01F 17/00 (2006.01) C22B 3/26 (2006.01) C22B 3/28 (2006.01) C22B 3/32 (2006.01) C22B 3/38 (2006.01) C22B 59/00 (2006.01)

Patent

CA 2025152

PRECIS DE LA DIVULGATION: L'invention concerne un procédé d'attaque d'un minerai contenant des terres rares. Ce procédé consiste en une attaque sulfurique d'un minerai dans un réacteur puis reprise par une solution de nitrate de calcium dans un autre réacteur, et après élimination des insolubles, récupération des terres rares par un procédé d'extraction liquide/liquide dans une batterie d'extraction.

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