Prospective technologies for lithium-ion battery recycling

Everyone knows that after the utilization rate of new energy vehicles has increased, lithium battery recycling has also become a popular industry. It is an industry with low investment and high return in the current market. It is also deeply affected for the sustainable development of the lithium battery manufacturing industry. Waste power batteries are rich in lithium, iron, copper, aluminum and other metal elements. If waste lithium batteries are to be recycled and reused, waste lithium battery recycling and processing equipment is indispensable. The whole set of equipment adopts a harmless and environmentally friendly treatment method, which not only realizes the environmental protection dismantling and separation of waste lithium batteries, but also is a leader in the green environmental protection industry. , so that all kinds of recycled and reused resources are continuously recycled.

Compared with the explosive growth of the installed capacity of lithium batteries, the disposal of waste and used lithium batteries is also worth considering. Lithium-ion batteries contain nickel, cobalt, manganese and other metal resources. They are both precious metals and heavy metals. If they are not handled properly, they will cause serious pollution to the environment.

Lithium Ion Battery Recycling Plant

New energy vehicles have entered a stage of rapid growth since 2014. According to the estimation of the service life of passenger vehicle batteries of 5 to 6 years, the power batteries for passenger vehicles produced in 2014 will begin to enter the scrapping period in batches this year; Commercial vehicle power batteries with a high annual super-high-speed growth base will also be scrapped in batches this year, and due to the higher battery capacity of commercial vehicles, the amount of scrap is expected to be more considerable than that of passenger cars.

At the 2022 World Power Battery Conference last week, Zeng Yuqun, chairman of Ningde Times, said that batteries are different from oil. After the oil is used, it is gone, and most of the materials in the battery can be recycled.

In terms of process flow, lithium-ion battery recycling technologies are mainly divided into hydrometallurgy and pyrometallurgy. 1. The pyrometallurgical method for the treatment of waste batteries, although the process is relatively environmentally friendly and simple, and the treatment of waste water and waste gas is relatively easy, but it may cause irreversible effects on the performance of battery active substances. 2. The hydrometallurgical process is simple and practical, and there are currently examples of industrial applications.

Hydrometallurgical extraction process of waste battery cobalt nickel lithium:

1. Alkali leaching of aluminum from used batteries after pretreatment

2. Use H2O2+H2SO4 for leaching residue to leaching copper and cobalt, and recover copper by electrodeposition of leaching solution

3. Use P204 to extract and remove impurities, and P507 to extract and separate cobalt and lithium

4. Cobalt recovery by sulfuric acid stripping

In addition, the currently commonly used waste lithium battery recycling and processing equipment is a set of lithium battery dismantling and sorting technology complexes that use a variety of technologies, including lithium battery discharge technology, lithium battery physical disassembly technology, lithium battery steel shell magnetic separation technology, lithium battery crushing and powder removal technology, lithium battery screening and collection black powder technology, lithium battery screening and separation diaphragm technology, lithium battery positive and negative copper and aluminum secondary powder removal technology, lithium battery positive and negative copper and aluminum separation technology, lithium battery Battery production line environmental protection dust removal technology, etc. Relying on the superposition of various technologies to form a complete set of waste lithium battery recycling and processing production lines. It also plays an important role in the recycling of lithium batteries.