In today’s society, the widespread use of lithium-ion batteries inevitably generates a large number of used batteries. Among these used lithium-ion batteries, cobalt and lithium in the positive electrode have high recycling value due to their high price and scarcity. In addition, aluminum and copper foil used as current collectors in the positive and negative electrodes are also valuable recyclable metals. Recycling these batteries not only reduces environmental pollution from used batteries but also achieves the complete recycling and utilization of all valuable components in used lithium-ion batteries.
Lithium Battery Recycling Production Line Process
Used lithium batteries are conveyed to a single-shaft crusher for crushing. The crushed material is then conveyed to a hammer crusher for secondary crushing. The material after secondary crushing enters a linear vibrating screen to collect some positive and negative electrode powder. The separator paper in the remaining mixture is separated by an induced draft fan, and iron is separated by a magnetic separator. The remaining material enters a pulverizer for a third crushing, and then passes through a drum screen to collect some positive and negative electrode powder. The remaining material is separated from copper and aluminum by two air separators. Lightweight materials collected by the cyclone separator and pulse dust collector are further sorted by a linear vibrating screen. Exhaust gas, after treatment by purification equipment, meets national emission standards.
Lithium Battery Recycling Production Line (including furnace) Workflow
1. Fully discharged waste lithium batteries are crushed to approximately 10cm by a crusher and then conveyed into the carbonization furnace. During carbonization, the diaphragm is directly carbonized, the electrolyte undergoes pyrolysis and gasification, and the binder also undergoes gasification. Because the furnace is almost a closed space, anaerobic conditions are met. The diaphragm, binder, and electrolyte are heated and pyrolyzed and gasified within the carbonization furnace. The generated flue gas is discharged through a recycling pipeline and a flue gas purification system, achieving a reciprocating heating and hydrolysis effect.
2. The carbonized material is crushed by a pneumatic conveying system and then enters a fully enclosed linear screen for initial screening. Positive and negative electrode powders are conveyed through the linear screen to a lower enclosed conveyor and finally loaded into ton bags (finished powder).
3. The remaining diaphragm, copper, aluminum, and shell materials are separated from the iron by a belt magnetic separator. The diaphragm is then collected in ton bags via a pneumatic extraction device.
4. After iron removal, the material enters a crusher for further crushing. The crushed material has a particle size of approximately 50-60 mesh. It is then conveyed under negative pressure to a cyclone separator for collection, and then discharged into a screening machine. The upper layer of material from the drum screen is discharged, forming larger particles such as membranes and plastics, which can be directly bagged. The middle layer of material enters a gravity separator for copper and aluminum separation.
5. The lower layer of material is the finished black powder, which can be directly bagged. Furthermore, the exhaust ports of the crusher, linear screen, collection unit, and copper-aluminum separator are all connected to a dust collector for dust and odor removal. At this point, the entire equipment completes the necessary production processes. The advantages of this equipment are simple structure, few wearing parts, high efficiency, high powder output, low copper and aluminum content in the finished product, and minimal dust overflow.
As a professional manufacturer of waste lithium battery recycling equipment, Renewable possesses extensive experience and top-notch technical support in the recycling and reuse of waste lithium batteries from mobile phones, computers, and other electronic devices. We can also customize waste lithium battery recycling production lines to meet different specifications and product requirements. Please feel free to contact us for consultation if needed.
