Defang Nano Applies for Patent on Lithium Iron Phosphate Recovery Method

Published: May 31, 2024 06:17

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[Lithium iron phosphate: Application for lithium iron phosphate recovery method of Defang Nano] Qujing Defang Nano Science and Technology Co., Ltd. has applied for a patent named "A method for recovering lithium iron phosphate from lithium iron phosphate waste and battery-grade lithium iron phosphate", with a publication number of CN202410194710.6 and an application date of February 2024. The steps include: mixing lithium iron phosphate waste and an ion exchanger in a solvent to carry out an ion exchange reaction to obtain a mixed solution, where the ion exchanger includes soluble lithium salt and/or ammonium salt; separating and obtaining a solid product from the mixed solution; roasting the solid product to obtain lithium iron phosphate. Based on the total weight of lithium iron phosphate, the chemical composition of lithium iron phosphate meets Na≤150ppm, K≤150ppm, S≤100ppm, C≤2%. The lithium iron phosphate product recovered by the method provided in this application has high purity and structural stability, and can be used as battery-grade lithium iron phosphate.

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