Important key technologies and principles of lithium-ion battery recycling

Does lithium-ion battery have recycling value? From the current technology, if the availability of waste lithium-ion batteries is not great, there is no special technology that can exert greater benefits; because waste lithium-ion batteries contain heavy metals and The chemical composition requires special treatment to prevent environmental pollution. The current technology is not yet mature. Regarding the use of waste lithium-ion batteries, we understand that cobalt, lithium, copper, and plastics in waste lithium-ion batteries are valuable resources and have high recycling value. Therefore, scientifically and effectively disposing of waste lithium-ion batteries not only has significant environmental benefits, but also has good economic benefits. In order to alleviate the increasingly serious resource shortage and environmental pollution brought about by rapid economic development, recycling all components of used lithium-ion batteries has become a global consensus. Used lithium-ion batteries are mainly composed of shell, positive electrode, negative electrode, electrolyte and membrane. The positive electrode is coated with lithium cobalt oxide powder on both sides of the aluminum foil collecting liquid through PVDF for bonding purposes. The structure of the negative electrode is similar to that of the positive electrode. Regarding the recycling of used lithium-ion batteries, the commonly used recycling methods include hydrometallurgy, pyrometallurgy and mechanical physical methods. Compared with wet method and fire method, lithium ion battery pulverizer adopts mechanical and physical methods, does not use chemical reagents, has low energy consumption, and is an environmentally friendly and efficient method. Recycling waste lithium-ion battery processing to make money, Kaidi Machinery invests in lithium-ion battery shredder equipment, based on the positive and negative structure of lithium-ion batteries and the characteristics of its constituent materials, copper and carbon powder materials, using hammer vibration crushing, vibrating screens and gas The separation process separates and recycles waste lithium-ion batteries-constituent materials. At present, about 100 million mobile phone batteries are discarded every year, each battery weighs an average of about 20 grams and has a cobalt content of more than 3g. The current price of cobalt is 400,000 yuan/ton. Aluminum, copper and organic electrolytes can also be recovered from waste lithium ion secondary batteries, which have high utilization value. The cost of recycling is mainly the power consumption, labor cost, raw material cost, transportation cost and company management fee of the operation of mechanical equipment, as well as the cost of recycling waste batteries. Relying on the effective recycling system of used mobile phone batteries, it is estimated that the annual processing capacity is 100t, the annual sales income is not less than 22.5 million yuan, and the profits and taxes are 4.5 million yuan. The recycling of waste lithium-ion batteries can realize the recycling of materials, which has important social significance. Waste lithium-ion battery cell processing production line abandoned traditional wet methods, such as high energy consumption, high pollution recycling technology, important use of physical recycling methods, supplemented by three waste treatment measures, green, low carbon, energy saving, environmental protection, no secondary pollution, etc. , Taking into account economic and environmental benefits, realize the use of valuable components, and the treatment of harmful ingredients. The entire recycling process has realized industrial automation, with high recycling efficiency and strong processing capacity. The processing capacity is 500kg per hour and the annual processing capacity is 5000 tons. The recycling efficiency of valuable components of waste lithium-ion batteries reaches more than 90%. With the widespread application of lithium-ion batteries, recycling valuable metals in lithium-ion batteries, reducing environmental pollution, and alleviating resource shortages have important social and economic significance. Through the research on the recycling of used lithium-ion batteries, it can be found that most of the recycling methods are aimed at the recovery of positively active materials in the battery. To sum up, according to the important key technologies and principles of recycling, the recycling and treatment technologies of waste lithium-ion batteries can be divided into physical methods, chemical methods and mechanical methods. 'The lithium ion battery crusher equipment produced by the crusher crusher is the coarse crusher of raw materials below 10 mm, and then enters the particle crusher to deprive and crush, and then to the micro powder classifier for separation and processing, the tail ash return channel cyclone separator and pulse Dust collector collection. 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