Lithium Battery Grinding Machines

Lithium Battery Grinding Machines

1. Working Principles

• Dry Grinding: Under dry conditions, materials are crushed into fine particles using mechanical forces. The advantages of dry grinding include simple processes, low costs, high production efficiency, and the ability to avoid moisture contamination during grinding, thereby ensuring the purity and stability of the materials.
• Wet Grinding: In this method, liquid media (such as water or organic solvents) are added during the grinding process, and the high-speed movement of grinding media (such as zirconia beads) is used to achieve material crushing. Wet grinding can achieve finer particle sizes and more uniform distributions.

• The convergence of two centrifugal forces to create a highly dense area of grinding beads.
• Strong centrifugal separation to ensure effective separation of grinding beads and materials.
• High-efficiency dispersion layers to ensure uniform distribution of materials during grinding.

2. Applications

• Cathode Materials: Such as ternary materials and lithium iron phosphate, grinding can enhance the specific surface area and electrochemical performance of the materials.
• Anode Materials: Such as graphite and silicon-based materials, grinding can optimize particle sizes to improve the charging and discharging performance and cycle life of batteries.
• Separator Coatings: By processing ceramic coatings through grinding technology, they can become more uniform and dense, thereby enhancing the ionic conductivity and mechanical strength of the separator.

3. Technical Parameters

• Processing Capacity: Ranging from tens of kilograms to several tons per hour. For example, the processing capacity of a dual-power vertical nano-grinding machine can reach 8×10000 kg/hour.
• Rotation Speed: Depending on the grinding requirements, the rotation speed ranges from hundreds of revolutions to tens of thousands of revolutions per minute. For example, the rotation speed of a certain model of grinding machine can reach 1.4×10000 revolutions per minute.
• Grinding Media: Common grinding media include zirconia beads and steel balls, and their materials and sizes can affect the grinding results.
• Power: The power range of grinding machines is from several kilowatts to hundreds of kilowatts. For example, the power of a certain model of grinding machine is 160 kW.
• Grinding Precision: By adjusting grinding parameters, materials can be ground to micrometer or even nanometer levels. For example, a certain model of grinding machine can grind materials to below 10 micrometers or nanometers.

4. Advantages and Features

• High Wear Resistance: The grinding head is usually made of materials with good wear resistance and thermal conductivity, such as silicon oxide ceramics, to extend the service life of the equipment.
• No Contamination: No metal impurities are introduced during the grinding process, ensuring the purity of the materials.
• Efficient Grinding: By optimizing grinding parameters, efficient and uniform grinding results can be achieved.
• Intelligent Control: Some grinding machines are equipped with PLC control systems to achieve automated operation and parameter adjustment.