Scrap lithium battery resource regeneration technology
The recycling of scrapped lithium-ion batteries is of great significance. First of all, it is about environmental protection. There are many types of batteries: lithium batteries, lead batteries, alkaline zinc-manganese batteries, nickel-hydrogen batteries, etc. Lithium batteries are used in our mobile phones for daily household use. It is the 7th and 5th dry batteries. No matter which kind of battery is scrapped, it will no longer be used and disposed of together with household waste, or the method of burial will cause the metal in the battery to pollute the land, and the precious metal in the lithium battery will be wasted. Therefore, it is of great significance to adopt a reasonable recycling method to provide a new way for scrapped lithium batteries! Lithium-ion batteries use lithium-doped metal oxides as electrodes and transfer lithium ions to complete charging. Discharge, the battery is a rechargeable battery. The lithium battery is mainly composed of a shell, a positive electrode, a negative electrode, an electrolyte and a separator. The positive electrode is formed by coating lithium cobalt oxide powder on both sides of the aluminum foil current collector through PVDF that acts as a bond; It is formed on both sides of the copper foil current collector. Lithium-ion batteries have significant advantages such as high voltage, large specific capacity, long life and no memory effect. Since their commercialization, they have quickly occupied the power source market for portable electronic and electrical equipment, and the output has been increasing year by year. The service life is about 2 years. If the discarded lithium battery is improperly disposed of, the lithium hexafluorophosphate, carbonate organic compounds and heavy metals such as cobalt and copper will inevitably pose a potential pollution threat to the environment. On the other hand, cobalt, lithium, copper and plastics in waste lithium batteries are valuable resources and have extremely high recycling rates. Common lithium-ion battery metal content: cobalt 15%, copper 14%, aluminum 4.1%, iron 25%, lithium 0.1%. Therefore, scientific and effective treatment of waste lithium batteries will not only solve the trouble of polluting the environment, but also create more benefits.
The development trend of waste lithium battery recycling technology: the recycling technology of lithium battery in Henan is a physical recycling method, which does not require fire or water to dry the copper-aluminum-iron black powder separator. This technology is currently more popular, because it comes from the economy. It is said that the whole set of recycling equipment is cheap and efficient, and can be recycled separately to achieve the desired effect. The specific process is as follows: the lithium battery is first immersed in salt water, dried and discharged, and then the conveying device sends the waste into the shredder for rough crushing. Granular, the discharge port is equipped with a magnetic separator to separate out the iron. At this time, the material is sent to the air specific gravity separator, and the diaphragm is separated by the induced draft fan and the cyclone. The positive and negative plates on one side enter into the pulverizer for grinding, and the discharge state is about 20 meshes. The pulverized materials enter the cyclone separator from the negative pressure system to absorb and filter the dust, and pass the specific gravity of the wind again. The sorting machine recovers copper and aluminum.
The recovery and disposal of end-of-life lithium battery resources often presents a unique set of challenges that need to be adapted to economic and technological developments. The lithium-ion battery recycling technology is constantly being reformed and innovated, and the current technology is in line with the normal operation of enterprises. Aluminum shell lithium battery is the mainstream of lithium battery at present, and it is used in almost all fields involved in lithium battery. A set of waste lithium battery recycling production line can extract metals for various lithium batteries to achieve the purpose of recycling e-waste resources, in order to ensure the investment needs of various lithium battery equipment production lines. We can provide tailor-made and self-designed waste lithium battery recycling and processing production lines, which are not restricted by the origin and can be customized according to requirements.
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