Analyze the current status of lithium battery material recycling and recycling technology

Current status and technology of lithium battery material recovery. Lithium battery data recovery status and recovery skills. At present, my country has become an important processing country and consumer country of lithium batteries in the world, and the annual battery consumption has reached 8 billion. If the discarded lithium battery is not treated systematically, it will seriously waste resources, pollute the environment, and endanger human health. It can be seen that there is a broad market for the recycling of used lithium batteries. In recent years, with the accelerated upgrade of consumer electronics products and the continuous application of lithium batteries in the field of electric vehicles, a large number of waste lithium batteries have appeared. On the one hand, due to the huge market demand for lithium batteries, a large number of used lithium batteries will appear in the future. How to dispose of these used lithium batteries and reduce their impact on the environment is an urgent problem to be solved. On the other hand, in order to meet the huge demand of the market, lithium battery manufacturers have to process a large number of lithium batteries to supply the market. In the pretreatment stage, how to complete the automatic disassembly of waste lithium batteries safely and efficiently is an important obstacle to the industrial recycling of waste lithium batteries. How to systematically recycle and reuse the components of used lithium batteries, and how to reduce or prevent these secondary pollution, requires further in-depth research. The recycling process of used lithium batteries mainly includes pretreatment, secondary treatment and advanced treatment. Since there is still a certain residual charge in the waste battery, the pretreatment process includes a deep discharge process, a crushing process and a physical separation process. The purpose of the secondary processing is to complete the complete separation of the positive electrode and negative electrode activity data from the substrate. Advanced processing mainly includes two processes of leaching and separation and purification to extract valuable metal data. According to the classification of extraction process, lithium battery recycling methods can be divided into three types of skills: dry recycling, wet recycling and biological recycling. 1. Dry memories Dry recovery refers to the direct recovery of materials or valuable metals without solvents. Among them, physical separation method and high temperature pyrolysis method are mainly used. 2. Wet recovery The wet recovery process is to crush and dissolve the used batteries, and then use appropriate chemical reagents to selectively separate the metal elements in the leachate to process high-grade metal cobalt or lithium carbonate, etc., and directly recover them. The wet recycling process is more suitable for recycling waste lithium batteries with a relatively single chemical composition, and the equipment cost is lower, and it is suitable for small and medium-sized planning waste lithium battery recycling. Therefore, this approach is now more widely used. 3. Biological memories Mishra et al. used inorganic acids and Thiobacillus ferrooxidans to leaching metals from waste lithium batteries, and using S and ferrous ions (Fe2+) to produce metabolites such as H2SO4 and Fe3+ in the leaching medium. Lithium battery recalls 1. After high temperature metallurgical waste lithium batteries are roasted at high temperatures, they are broken with simple machinery. Fine powder containing metal and metal oxide is obtained by sieving. 2. After hydrometallurgical waste batteries are broken, they are selectively dissolved with appropriate chemical reagents to separate the metal elements from the leaching solution. 3. After physical disassembly, after crushing, screening, magnetic separation, precision crushing, and classification, high-content battery components are obtained, and then the next step is to be recycled. Conclusion: Improper recycling of lithium batteries can also cause pollution. Although lithium batteries do not contain toxic heavy metals such as mercury, cadmium, and lead, the positive and negative data of the battery and the electrolyte still have a great impact on the environment and the human body. Discarded lithium batteries should be recycled to reduce damage to the natural environment and human health. 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 post: How powerful is the explosion of lithium batteries?