METHOD FOR RECOVERY OF RARE EARTHS FROM FLUORESCENT LAMPS

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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.© KIPO & WIPO 2009