Method for recycling copper foil and aluminum foil from waste lithium battery
Lithium-ion batteries are widely used in notebook computers, mobile phones, cameras and other electronic devices due to their advantages of high energy density, light weight, high voltage, safety and less environmental pollution. At the same time, the rapidly developing new energy vehicle industry in recent years also uses lithium-ion battery packs as its power source. Due to the impact of the cycle life of lithium-ion batteries, the number of lithium-ion batteries that will be scrapped every year is staggering, and this number is increasing year by year. Waste lithium-ion batteries contain a variety of valuable metals and harmful substances, so the effective recycling of waste lithium-ion batteries not only has high economic benefits, but also reduces environmental pollution. The recycling of lithium-ion batteries is inevitable.
At present, most of the recycling and reuse of waste lithium-ion batteries focus on cathode materials, and great progress has been made. However, relatively little attention has been paid to the recovery of positive and negative current collectors. Among the currently known treatment processes, some use discharge, manual disassembly, heating, and ultrasonic cleaning to separate the positive and negative materials, thereby realizing the recovery of copper foil and aluminum foil. . Some use discharge, mechanical crushing, and ultrasonic stirring to remove positive and negative materials, so as to achieve copper foil and aluminum foil recovery. Some use the wet leaching process to recover copper foil and aluminum foil. These methods have their own advantages, but the process is complicated, the efficiency is not high, the cost is high, and the environmental protection is not enough.
Therefore, a simple and efficient method that does not cause secondary pollution to the environment is required to recycle copper foil and aluminum foil in waste lithium-ion batteries, so as to achieve the purposes of resource saving, improving economic benefits, and reducing environmental pollution.
The method for discarding copper foil and aluminum foil in lithium-ion batteries includes the following steps: (1) throwing the discharged waste lithium-ion batteries into a roller crusher and a vertical impact crusher, and throwing the products after two-stage crushing into Go to the vibrating screen for screening and classification, the product is divided into three grades, and the middle grade is taken; (2) The intermediate grade mixture is subjected to high-voltage electrostatic separation to remove the diaphragm and plastic, and the product is put into a horizontal crusher to make copper. The mixture of foil and aluminum foil is crushed to the target particle size; (3) the product of the horizontal crusher is sorted through the vibrating fluidized bed, the light product is discharged through the upper part to obtain aluminum foil, and the heavy product is discharged through the scraper to obtain copper foil. SUNY GROUP's environmentally friendly lithium battery recycling equipment realizes the separation and recovery of copper foil and aluminum foil in waste lithium-ion batteries, with methods such as strong operability, environmental protection and low cost. If you need it, please feel free to contact us for consultation, we will formulate a scientific and effective lithium battery copper and aluminum foil recycling scheme according to your needs.
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