China Jiangsu Battery Pulp Industry Customer Cooperation Case

Jiangsu lithium battery customers use sand mills for grinding and dispersion processing. The battery cell slurry is mixed and combined. The lithium battery has high dispersion requirements and uses relatively precise machinery to complete the work. LTD machinery has been repeatedly tested and has achieved good work efficiency and stability!

The mixing and dispersion process of lithium battery cell slurry has an impact on the quality of the product by more than 30% in the entire production process of lithium-ion batteries. It is the most important link in the entire production process.

In the manufacture of lithium-ion battery electrodes, the positive electrode slurry is composed of adhesives, conductive agents, positive electrode materials, etc.; the negative electrode slurry is composed of adhesives, graphite carbon powder, etc. The preparation of positive and negative electrode slurries includes a series of process processes such as mixing, dissolving, and dispersing between liquids and liquids, and liquids and solid materials, and this process is accompanied by changes in temperature, viscosity, environment, etc. In the positive and negative electrode slurries, the dispersion and uniformity of the granular active materials directly affect the movement of lithium ions between the two poles of the battery. Therefore, the mixing and dispersion of the slurries of various electrode materials is crucial in the production of lithium-ion batteries. The quality of the slurry dispersion directly affects the quality of subsequent lithium-ion battery production and the performance of its products.

Ultrafine dispersion is performed on the traditional process because: through traditional mixing and stirring equipment, only large powder agglomerates in the solution can be broken up and evenly distributed; however, the powder form exists in the solution in the form of fine powder agglomerates, which only meets the processing requirements of macroscopic dispersion.

After macroscopic stirring and dispersion, the slurry can further break up and homogenize the fine powder agglomerates or solid particle agglomerates in the solution under the strong mechanical cutting force of the ultrafine dispersion homogenization equipment, obtain sufficiently fine solid particles, and evenly distribute them in the solution, achieving the effect of microscopic ultrafine dispersion and homogenization, which can significantly improve the comprehensive performance of the slurry.

The dispersion mechanism of materials in the supershear dispersion equipment is relatively complex, mainly dominated by shearing, and supplemented by other effects. The slurry material produces repeated compression effects under the action of high-frequency pressure waves, and is also strongly affected by the shear force and cyclotron shear force in the narrow gap of the supershear dispersion equipment. With such a comprehensive and repeated action, the processed slurry produces a strong dispersion and crushing effect, and finally achieves the purpose of rapid ultrafine dispersion.