MUMBAI, India, May 29 -- Intellectual Property India has published a patent application (202611050871 A) filed by Jamia Millia Islamia University, New Delhi, on April 21, for 'process for extraction and recovery of rare earth elements from end-of-life permanent magnets.'
Inventor(s) include Abid Naseem And Naved Ahsan.
The application for the patent was published on May 29, under issue no. 22/2026.
According to the abstract released by the Intellectual Property India: "The present invention relates to a process for recycling permanent magnets and recovering rare earth elements from end-of-life magnets. The method (100) comprises steps of collecting and segregating plurality of permanent magnets from waste items, demagnetizing permanent magnets by applying high temperatures, crushing and milling demagnetized magnets to obtain powder of magnets, subjecting powder of magnets to acid leaching for dissolving rare earth elements found in magnets to obtain leachate, separating solid residues from leachate by filtration, removing impurities from leachate through pH adjustment and chemical treatment, adding oxalic acid to obtain a rare earth oxalate and precipitating rare earth oxalate, drying precipitated rare earth oxalate and calcining dried rare earth oxalate to obtain a rare earth oxide. The recovered rare earth oxides can be reused for manufacturing permanent magnets and other advanced materials. The process provides environmentally sustainable approach for recycling of rare earth elements from waste permanent magnets."
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