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Introduction to waste lithium battery recycling equipment

Time:2021-12-03 10:42 Author:Suny Group

Waste lithium battery recycling and treatment equipment mainly adopts physical recycling methods, supplemented by "three wastes" disposal measures. It has the characteristics of green, low-carbon, energy-saving and environmental protection, and no secondary pollution. It also takes into account economic and environmental benefits, and realizes the use of valuable components. , And no hai treatment of harmful components. The entire recycling process has achieved industrial automation, with high recycling efficiency and strong processing capacity, with an hourly processing capacity of 500 kg, an annual processing capacity of 5,000 tons, and a recycling rate of more than 90% of valuable components of waste lithium batteries.

Lithium Battery recycling plant

Cobalt, lithium, copper and plastics in waste lithium batteries are precious resources and have a high recycling value. Therefore, scientific and effective treatment of waste lithium batteries not only has significant environmental benefits, but also has good economic benefits.

The scrap lithium battery is sent to the first-class shredder by the conveyor for shredding. The shredded material is sent to the second-stage multi-blade crusher through the conveyor for secondary crushing, and the material after the secondary crushing enters the conveyor. At the same time, a magnetic separation equipment is set up in the machine, which can separate the iron in the material. The sorted materials are sent to the air-flow sorter through the conveyor, and the diaphragm paper in the positive and negative ji slices is separated by the induced draft fan and the cyclone feeder, and the sorted positive and negative ji slices enter the three-stage crusher Crush the material to about 20 mesh. The pulverized material enters the cyclone separator from the negative pressure system for dust filtration, and passes through two airflow sorting, so that the materials of different densities are layered, and then the positive and negative ji materials and copper, aluminum, nickel and other materials are obtained. And all the ultra-fine dust is brought into the pulse dust collector by the negative pressure system for collection. The filtered exhaust will continue to be sent from the negative pressure system to the exhaust treatment equipment for air purification, so that it will meet the national emission standards before being discharged at high altitude.

Cobalt, lithium, copper and plastics in waste lithium batteries are precious resources and have a high recycling value. Therefore, scientific and effective treatment of waste lithium batteries not only has significant environmental benefits, but also has good economic benefits. Lithium batteries are mainly composed of outer shell, positive ji, negative ji, electrolyte and diaphragm. The positive ji is formed by coating lithium cobalt oxide powder on both sides of the aluminum foil current collector through PVDF which has a bonding effect; the negative ji structure is similar to the positive ji, and is composed of carbon powder bonded to both sides of the copper foil current collector. At present, researches on the recycling of waste lithium batteries are mainly focused on the recovery of valuable positive and precious metals, cobalt and lithium, and there are few reports on the separation and recovery of negative materials. The copper (content about 35%) in the negative sheet of waste lithium batteries is a widely used important production raw material, and the carbon powder adhered to it can be used as an additive for plastics, rubber, etc. Therefore, the effective separation of the constituent materials of the negative sheet of the waste lithium battery has a driving effect on the realization of the limited recycling of the waste lithium battery and the elimination of its corresponding environmental impact. Commonly used methods for recycling waste lithium batteries include hydrometallurgy, pyrometallurgy, and mechanical and physical methods. Compared with the wet method and the fire method, the mechanical physical method does not require the use of chemical reagents, and has lower energy consumption. It is an environmentally friendly and efficient method.

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