Project overview

In the production of new energy lithium batteries, the stability of lithium electric paste is the key factor for the quality of lithium battery products. The mixed dispersion process in the production process of lithium battery slurry has more than 35% impact on product quality. It is an important link in the entire production process.

Lithium battery electrode manufacturing is composed of positive slurry and negative slurry; The positive slurry is composed of adhesive, conductive agent and positive electrode material, and the negative slurry is composed of adhesive and graphite powder; Therefore, lithium battery slurry is a non-Newtonian fluid composed of different gravity, different particle size and various materials.

Description of materials and working conditions

The preparation of lithium battery slurry includes a series of mixing processes, such as mixing, dissolving and dispersing between liquid and liquid, solid and liquid materials;

The factors that affect the mixing and dispersing process of slurry production are：

1. Mixing speed and dispersion rate,

2. Material concentration,

3. Vacuum degree,

4. Temperature; Common problems in the slurry production operation, such as:

① Long batch dispersion time and high energy consumption

② Unstable addition of electrode powder

③ Mixing paddle material residue, batch cleaning

④ Bubbles in the production process affect dispersion

⑤ Quality stability between batches.

All these are closely related to the choice of mixing shear homogenization function of stirring equipment. At present, the high shear dispersion process is used to produce stable and uniformly mixed battery slurry.