With the development of the domestic environmental protection industry in recent years, the new energy industry has made considerable progress. Lithium batteries as an energy-saving and environmentally friendly material have been widely used in electric vehicles, electric vehicles, aerospace and other fields. In order to improve the quality of lithium batteries in the production process of lithium batteries, it is necessary to use corresponding vibrating screening equipment. So what sorting equipment are used in the production process of the lithium battery industry?
Lithium batteries generally use manganese dioxide as the positive electrode material, metallic lithium or its alloy metal as the negative electrode material, and use a non-aqueous electrolyte solution. Lithium battery materials can be divided into positive electrode materials and negative electrode materials. The positive electrode material mainly uses lithium iron phosphate, and the negative electrode material mainly uses graphite. New research has found that titanate may be a better material. Therefore, the lithium battery vibrating screen used is different for different materials.
1. Cathode material vibrating screen: Since lithium iron phosphate is mostly granular, the screening equipment used in the screening process is a three-dimensional vibrating screen. This series of vibrating screen uses a vertical explosion-proof vibrating motor. The upper and lower ends of the motor are equipped with eccentric weights, which convert the rotating motion of the motor into a horizontal, vertical, and inclined three-dimensional motion, and then transfer this motion to the screen surface. Realize the role of classification and impurity removal. When it comes to the cathode material, the whole machine is made of 304 stainless steel. The design should be closed and the inlet and outlet should be designed to be connected to the automatic feeding and receiving device. This series of equipment has the characteristics of small size, low energy consumption, convenient movement, good closing performance and high safety performance.
2. Anode material vibrating screen: We have mentioned above that the most used anode material is graphite powder. This material is a material with higher fineness. During the production of ordinary screening equipment, there will be blockage and dust escape. For problems such as this type of material, it is recommended to use an ultrasonic vibrating screen for production. This type of vibrating screen is a new type of screening equipment specially designed and produced for high-precision materials. The principle is that the screen surface receives a high-frequency and low-amplitude ultrasonic vibration wave from the ultrasonic screening system while the equipment is doing the original three-dimensional movement, so that the material is suspended on the screen surface at a low altitude to achieve the effect of screening high-precision materials. This series of vibrating screens can effectively solve the screening problems of material blocking, sticking, adsorption, troupe, static electricity, and light specific gravity. It is an ideal screening equipment for new energy materials.
3. Vacuum feeding system: The vacuum feeding system is a kind of powder conveying equipment that uses vacuum generation facilities to generate high vacuum and form a negative pressure airflow to convey particles and powdery materials. It uses the pressure difference between the vacuum and the environmental space to form The gas flow in the pipeline drives the movement of the powdery materials, thereby completing the transportation of the powder. The vacuum feeding system is mainly composed of vacuum pump, vacuum unit, conduit, vacuum valve, etc. In the production process of the lithium battery industry, the use of a vacuum feeding system with a vibrating screen can effectively avoid the escape of dust and the safety of the production environment.
When the vibrating screen is in contact with the material, it is easy to wear and the service life of the equipment is short. After using the supersonic spraying tungsten carbide coating, the wear resistance performance is significantly improved by about 5 times, the use time is prolonged and the iron ion in the device is isolated, which not only prolongs the service life, but also improves the purity of the cathode material powder. It is now used in lithium batteries. A large number of cathode materials industry has been put into use.
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