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US09499881B2 Refining methods and agents for rare earth production 有权
稀土生产精炼方法和试剂

Refining methods and agents for rare earth production
摘要:
Hydrometallurgical systems, methods, and compositions are described in which organic amine-based lixiviants are utilized in the selective recovery of rare earth elements. The lixiviant can be regenerated in situ, permitting the organic amine to be used in substoichiometric amounts.
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