US Patent Issued to GREEN LI-ION on Feb. 4 for "Process for removing impurities in the recycling of lithium-ion batteries" (Singaporean Inventor)

ALEXANDRIA, Va., Feb. 5 -- United States Patent no. 12,218,325, issued on Feb. 4, was assigned to GREEN LI-ION PTE. LTD. (Singapore).

"Process for removing impurities in the recycling of lithium-ion batteries" was invented by Reza Katal (Singapore).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of treating a leaching solution derived from a black mass from spent lithium-ion batteries comprising setting pH of the leaching solution to about pH 1.2 to 2.5, adding iron powder to induce copper cementation, adding lime after copper cementation, and after adding lime, transiting pH of the leaching solution to about pH 6 to extract calcium fluoride, titanium hydroxide, aluminium hydroxide, iron hydroxide, an...