Theoretically, the operation of uniformly mixing materials in any state (solid, liquid, gaseous and semi-liquid) is called mixing, but it is customary to call the operation of mixing solid materials or adding a small amount of liquid to a small amount of liquid. Mixing, and the operation of mixing solid, liquid or gaseous materials with liquid materials is called stirring. Then in the production process of lithium battery, the role of stirring is unquestionable. In short, stirring is the process of making the material tend to homogenize. The material has very complex changes in the actual stirring process, in addition to strong physical effects. , but also accompanied by certain chemical effects. Even if it is macroscopically homogeneous, there are still some material particle agglomerates under the microscope. Therefore, the stirring of materials is not only macroscopically homogeneous, but more importantly, microscopically relatively homogeneous.
Through the mutual rotation of the stirring blade and the revolution frame, the solid-liquid suspension of the liquid is generated and maintained under the condition of mechanical stirring, and the mass transfer between the liquid-solid phase is enhanced. Solid-liquid stirring is usually divided into the following parts: (1) Suspension of solid particles; (2) Resuspension of settled particles; (3) Infiltration of suspended particles into liquid; The force disperses the particle agglomerates or controls the particle size; (5) Mass transfer between liquid and solid.