How to recycle used lithium iron phosphate batteries?

How to recycle used lithium iron phosphate batteries? 1. Echelon utilization and raw material recovery Retired power lithium batteries. Those who take the echelon utilization road will carry out material recovery after the echelon utilization; the direct material recovery is the batch size is too small, there is no history to check, the safety monitoring is unqualified, etc. . 2 The method for extracting valuable metals from cathode materials The current recycling of power lithium batteries does not actually achieve the full recovery and reuse of various materials on the entire battery. The main types of cathode materials include: lithium cobalt oxide, lithium manganate, ternary lithium, lithium iron phosphate batteries and so on. There are three main types of recycling methods for waste lithium batteries: physical, chemical and biological methods. Compared with other methods, hydrometallurgy is considered to be an ideal recovery method due to its advantages of low energy consumption, high recovery efficiency and high product purity. ① Physical method Physical method uses physical and chemical reaction process to treat lithium iron phosphate battery. Common physical and chemical treatment methods are mainly crushing flotation method and mechanical grinding method. ②Chemical method The chemical method is a method for processing lithium batteries using a chemical reaction process, which is generally divided into two methods: pyrometallurgy and hydrometallurgy. ③Bio-method Bio-metallurgy is currently under study, which uses the metabolic process of microorganisms to achieve selective leaching of metal elements such as cobalt and lithium. The biological method has low energy consumption and low cost, and the microorganisms can be reused, and the pollution is small; but the requirements for cultivating microorganisms are harsh, the cultivation time is long, and the leaching efficiency is low. The process needs to be further improved. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: What are the advantages and disadvantages of lithium iron phosphate battery cathode materials?