Osram Gesellschaft MIT Beschraenkter Haftung

Osram Gmbh

Osram Ag

Agnieszka Wojtalewicz-Kasprzak

Robert Otto

Method of 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.

Method for recovery of rare earths from fluorescent lamps

Method for recovery of rare earths from fluorescent lamps. The method comprises six steps. &#x2022;The individual process steps are: Mechanical separation of coarse components. &#x2022;Separation of the halophosphate. &#x2022;Extraction in acids of easily soluble rare-earth fluorescent substances (mainly Y, Eu-oxide) &#x2022;Extraction in acids of rare-earth fluorescent substances which dissolve with difficulty (for example rare-earth phosphates) &#x2022;Breakdown of the remaining components which contain rare earths (for example rare-earth-aluminates) &#x2022;Final treatment.

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Emlichheim, Germany

Agnieszka Wojtalewicz-Kasprzak