Technical innovation - Ceramic counterroll crusher for high nickel ternary material

Suzhou Xiran Industrial Co., LTD., aiming at the characteristics of high nickel material, has carried out technical innovation on the sealing part of ceramic roll crusher, and added air seal on the basis of the original labyrinth seal to effectively eliminate the problem of powder leakage.　　

With the continuous expansion and extension of lithium-ion battery application scenarios, the capacity requirements of lithium-ion batteries are becoming increasingly high. In the composition of lithium-ion batteries, the cathode material is the most crucial part, accounting for approximately one-third of the cost of the entire battery. The lithium ion in the positive electrode material structure is the only source that maintains the normal operation of lithium-ion batteries, so the energy density of the positive electrode material largely determines the energy density of a battery. In this context, high nickel ternary cathode materials represented by 523, 622, and 811 have attracted increasing attention and become a research hotspot in recent years.

High nickel materials are sensitive to humidity and are prone to absorbing moisture from the air, leading to material performance degradation and even failure. To protect raw materials from moisture interference, it is necessary to add dry gas to the production line. At the same time, due to the excellent flowability of NCA (similar to liquid), traditional labyrinth seals cannot meet the requirements of high nickel materials, are prone to powder leakage, materials are easy to enter the transmission shaft, and there is significant friction on the shaft, which can easily damage the shaft and bearings.

Suzhou Xiran Industrial Co., Ltd. has innovated the sealing part of the ceramic roller crusher based on the characteristics of high nickel materials. It has added an air seal on top of the original labyrinth seal, effectively eliminating the problem of powder leakage.

　　In addition, due to the high hardness of single crystal high nickel materials, the material crushing process is prone to friction and high wear on the equipment cavity. In order to avoid internal wear and tear in the cavity, Xiran Industry has applied WC tungsten carbide spraying on the equipment's feeding plate, greatly increasing the service life of the components.

Ceramic counterroll crusher

    At present, the first production line of high nickel and low dew point (-60 degrees) of ternary cathode material in China has been completed by Xiran Industry.