| 简介 |
Method for recovery of rare earths from fluorescent lamps. The method comprises six steps. The individual process steps are : • Mechanical separation of coarse components. • Separation of the halophosphate. • Extraction in acids of easily soluble rare-earth fluorescent substances (mainly Y, Eu-oxide) • Extraction in acids of rare-earth fluorescent substances which dissolve with difficulty (for example rare-earth phosphates) • Breakdown of the remaining components which contain rare earths (for example rare-earth-aluminates) • Final treatment. |
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