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US 2026/0103777 A1Published application
Method for leaching of rare earth elements in fluorescent lamp waste
AssigneesYildiz Teknik üNiversitesi DöNer Sermaye Isletme MüD, Yildiz Teknoloji Transfer Ofisi Anonim Sirketi
InventorsBurak BIROL, Aysegul BILEN
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Abstract
A method for leaching of rare earth elements in fluorescent lamp waste is provided, which enables the direct leaching of Y and Eu in the red phosphorus within the phosphor powder and La, Ce, Gd and Tb metals, especially in the blue and green phosphorus, in a single step, without using pre-treatment step of phosphor powders in fluorescent lamp waste, which require high energy consumption.
Claims21
1-10. (canceled)
A method for leaching of rare earth elements (REE) from fluorescent lamp wastes, comprising steps of:
- performing a procurement of a fluorescent lamp waste phosphorus powder,
- performing a size classification and a homogenisation of the fluorescent lamp waste phosphorus powder to obtain homogenised fluorescent lamp waste phosphorus powder,
- performing a microwave leaching process to the homogenised fluorescent lamp waste phosphorus powder in an acid solution, and
- performing a separation of a solid and a liquid formed as a result of the microwave leaching process.
1 more element
Dependencies are inferred from the claim text.