Recycling Process and Technology of Waste Lithium Battery
Lithium battery is mainly composed of a battery cell and a shell. The battery cell has a separator and a positive and negative electrode. The positive active material includes carbon black conductive agent, lithium cobaltate powder and organic binder. These materials are directly coated on the current collector made of aluminum sheet. The main component of the negative active material is carbon powder. In addition, there is little binder and the material is coated on the copper foil current collector. Then, let's learn about the recycling process and technology of waste lithium battery!
With the increase of lithium battery consumption, more and more attention is focused on the treatment scheme of waste lithium battery resource recovery. After the waste lithium battery materials enter the environment without treatment, the metal ions in the cathode material, the carbon dust of the anode material, the strong alkali in the electrolyte, and the heavy metal ions may have different degrees of impact on the environment, causing heavy metal pollution. Therefore, the recycling of waste lithium battery resources has a high environmental protection effect. Based on the above analysis, this paper analyzes the technological means used in the recycling process in combination with a waste lithium battery resource recycling project, with the aim of improving the technical level of lithium battery recycling, reducing the pollution of lithium battery to the environment and improving the recycling effect.
It is necessary to classify the obtained waste batteries and obtain lithium ion batteries. By starting the shell breaking machine equipment, the outer shell of the battery is broken, the contents of the lithium battery are obtained, the plastic shell and the metal material are separated, and the following treatment is carried out. The positive active material contains lithium manganate, lithium nickel oxide and lithium cobalt oxide; the negative active material has soft carbon, hard carbon, graphite; the electrolyte salt can be directly dissolved in the electrolyte.
Physical Screening: Cathode Materials
The contents obtained from the inside of the lithium battery are physically screened to mainly gather the aluminum positive electrode sheet and the active coating layer, and the copper negative electrode sheet and the coating layer are separately treated. Then, the positive electrode sheet and the coating layer are sent to a crushing device and subjected to a crushing treatment. After the treatment, a mixture of positive electrode powder and aluminum particles can be obtained. A screening operation for refining the particle mixture was performed to separate the mixed positive electrode powder and aluminum particles.
Waste lithium battery recycling materials analysis and depth refining process
After the simple separation treatment in the early stage, the collected material can be further purified, and the method of synthesizing the electrode material from the leaching solution, the precipitation method or the organic extraction method can be used here.
At present, the use of waste lithium battery processing equipment physical method crushing sorting lithium battery positive and negative materials, raw materials copper and carbon powder raw materials are characterized by the use of hammer vibration crushing, vibration screening and cyclone screening composed of processing technology to separate and recycle waste lithium battery negative grade composition raw materials. Common recycling methods of lithium waste batteries include chemical technology, ice metallurgy industry and mechanical equipment physics. Compared with the wet and ice methods, the mechanical equipment physics method is a method that does not use chemicals, has low energy consumption, is environmentally friendly, and has good working performance.
Waste lithium battery equipment mainly uses physical methods of recycling, with low-carbon environmental protection, green sustainability, no secondary pollution and other characteristics, both economic development and environmental protection of the economic benefits. The recycling of lithium batteries can complete the use of valuable components while recycling waste lithium batteries for harmless treatment of hazardous components. The whole process department completes industrial automation, with high recovery efficiency and strong processing capacity. Lithium battery processing equipment has more than 99% of the value of processing waste lithium batteries.
The above is the waste lithium battery recycling process and process, if you need to know more, you can contact us at any time!