Positive electrode precursor fine grinding equipment, ball milling equipment, vertical roller mill

Release time:

2025-08-01 09:07

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In the journey of sodium-ion batteries toward large-scale industrialization, the high-quality, high-efficiency, and low-cost preparation of cathode material precursors is one of the core links. The precursors of cathode materials, their particle morphology, particle size distribution, and consistency, directly determine the electrochemical performance of the final cathode material and even the battery.

Precursors of sodium-ion cathode materials (such as layered oxides, polyanionic compounds, etc.) usually have specific chemical compositions and physical properties:

High hardness and strong abrasiveness: Many precursor raw materials (such as specific metal oxides, phosphates, etc.) have high hardness and cause significant wear and tear on traditional crushing equipment.

Strict particle size and morphology requirements: Precise control of the D50 particle size is required, along with a narrower particle size distribution and good sphericity or specific morphology to ensure the uniformity of the subsequent sintering reaction and the consistency of electrode coating.

High demand for process stability: In large-scale production, batch-to-batch stability and processing efficiency are key to reducing costs and ensuring quality.

With its comprehensive advantages in efficient fine grinding, precise particle size control, excellent particle morphology shaping, high reliability, and intelligence, the vertical mill is becoming an ideal choice for the processing of sodium-ion battery cathode material precursors.

The vertical mill adopts a unique vertical layout and a highly efficient grinding energy transfer method. Its core advantage lies in efficiently achieving fine and ultrafine grinding of materials, meeting the requirements of precursors for fine particle size.

The vertical structure, combined with the optimized design of the grinding media (such as ceramic beads) movement trajectory, makes the energy more concentrated on the material crushing, ensuring the uniformity of the precursor particles and laying a solid foundation for subsequent processes. 。

The grinding force of the vertical mill is gentle and controllable. ， This helps to reduce the sharp edges of the particles, promoting spheroidization or the formation of more uniform particles with smoother surfaces. This is crucial for improving the compaction density of the cathode material and the rate performance of the battery.

For materials with high hardness and strong abrasiveness, key components (grinding disc liners, stirrers, classifiers, etc.) use high-performance wear-resistant materials (such as ceramics and special alloys) to significantly extend the service life and ensure continuous and stable operation.

By adjusting the type of grinding media size, speed, slurry concentration, air volume, and other parameters, it can flexibly adapt to the processing needs of different sodium-ion precursor formulations and optimize the final product indicators.

The equipment has a large single-unit processing capacity and is easy to scale up with a modular design, providing reliable equipment support for the future mass production of sodium-ion batteries.

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Grinder, crusher, pulverizer, grinder, mixing mill

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