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.