How to recycle used lithium battery positive and negative pieces?
Release Time：2022-11-07 Source：Lithium battery recycling equipment Share：
Regarding the recycling of used lithium battery positive and negative pieces, let's first understand what the positive and negative materials of used lithium batteries are and their recycling value. The recycling equipment is Anode sheet crushing and recycling equipment and Negative electrode sheet crushing and recycling equipment
Lithium battery cathode materials
Anode mainly lithium cobalt acid, lithium manganate, lithium iron phosphate and ternary lithium materials (lithium nickel cobalt manganate, lithium nickel acid), etc. At present, the domestic mainstream lithium battery anode materials are mainly lithium iron phosphate and ternary materials these two. Anode materials account for 30% - 40% of the cost of lithium-ion batteries, directly affecting the energy density and performance of lithium battery pack.
Li-ion battery cathode materials
Negative electrode is the main component of lithium battery, it is made of negative active material, adhesive and additives mixed into a paste evenly coated on both sides of the copper foil, dried and rolled.
Lithium battery positive and negative electrode processing equipment for positive and negative electrode pieces (copper, aluminum, black powder) processing process.
1. Primary shredding: After the lithium battery positive and negative electrode processing equipment is powered on, press the shredder start button and the material is fed to the shredder through the conveyor for shredding.
2. Secondary crushing: The crusher will crush the materials that have been shredded by the pole piece again, and the multi-knife crusher will handle the coarse crushing of the lithium battery pole piece materials. The material is discharged through the crusher discharge port.
3. Vibrating sieving: through the lithium battery positive and negative electrode processing equipment production line equipped with a large vibrating screen for a variety of crushed materials for multi-stage screening.
4. Three levels of crushing: the screened materials are transported to the crusher through negative pressure and then three levels of fine powder, after the completion of the crushing, in the sieving. Then we get the black powder we need.
Lithium battery positive and negative electrode processing equipment
When the separation of waste lithium batteries, lithium-ion battery poles in the copper and aluminum and positive and negative active materials, copper and aluminum metal, in the selection of suitable lithium battery recycling equipment supporting process equipment, lithium-ion battery shell mixture by sealed transport facilities to the crushing stage, in the transport process through the dust and odor collection system, the gas and impurities will be separated, crushed up to standard materials through shear crushing will be diaphragm and active materials Separate, using the specific gravity frequency difference will be separated, in the motor-driven vibration frequency of the material to complete a sorting process.
Lithium battery cathode sheet material is conveyed to the crusher by the conveyor of lithium battery cathode sheet processing equipment and crushed to 15-25 mesh; the crushed material is conveyed to the analyzer, which separates the crushed material by air separation and separates the metal material and lithium cobaltate powder; the separated lithium cobaltate powder is conveyed to the collection device by the induced fan and the waste gas in the collection device is purified by the pulse purifier and then output. The metal materials selected by the analyzer enter the grading sieve for screening, the grading sieve further separates the metal materials and separates the lithium cobaltate powder and the metal part, the lithium cobaltate powder output from the grading sieve sinks into the collector through the induced draft fan, the aluminum powder screened from the grading sieve is collected directly through the third output, the other materials screened from the grading sieve enter the airflow sorter through the second output. The airflow sorter sorts the other materials that pass through the grading sieve and then carries out grading and sorting to sort out the aluminum metal and lithium cobaltate powder.