Having been deeply engaged in the field of lithium battery anode grinding and shaping for more than a decade

Provide tailor-made grinding and shaping process solutions for graphite materials

Graphite anode materials are the core components of lithium-ion batteries. As the key carriers for the intercalation and deintercalation of lithium ions during charging and discharging, they directly determine the energy density, cycle life and rate performance of batteries. They are also the most widely used anode materials in the current lithium battery field, and their comprehensive performance is directly related to the product quality, production cost and use safety of lithium batteries. The performance of anode materials is not only determined by the quality of raw materials and process formulations; high-efficiency and energy-saving core processing technologies such as carbon graphite grinding, spheroidization, shaping and classification are also important factors affecting their performance and play a key role in creating high-performance graphite anode materials.
70%

A Leading Enterprise in China's Lithium Battery Anode Crushing and Shaping Industry

Market share exceeding 70% *

We have deeply engaged in the field of lithium battery anode crushing and shaping with rich practical experience. For artificial graphite (including green coke and calcined coke) and natural graphite, we can tailor exclusive process solutions and supply a full set of supporting equipment with strong technical adaptability and high implementability. We have served more than 100 anode material manufacturers to date, with stable and reliable equipment and solutions that have won unanimous recognition and praise from industry customers.
* Statistics as of November 2025

Main Processes

For Graphite Processing of Lithium Battery Anodes

Graphite processing for lithium battery anodes generally involves four steps: first, raw material pretreatment with purification and impurity removal; second, crushing and shaping to form suitable particle sizes; third, spheroidization modification to create high-sphericity particles; finally, precision classification, impurity removal and drying to produce graphite raw materials meeting the performance requirements of lithium battery anodes.
01

Raw Material Pretreatment

The basic process of graphite processing. Natural graphite is mainly purified to over 99.9% by acid method, while artificial graphite focuses on homogenization and pre-crushing. All raw materials are uniformly dried to a moisture content of ≤0.5% and initially sieved to ensure consistent purity and indicators, laying a foundation for subsequent processing.
02

Grinding and Shaping

The raw materials are ground to a spheroidization-suitable particle size of 10-50μm by jet mill and pin mill, with sharp edges of particles ground off and irregular particles reduced to form near-spherical prototypes. The particle size distribution concentration is strictly controlled to lower energy consumption in subsequent spheroidization.
03

Spheroidization Modification

The core process. Particles are subjected to high-speed impact and rounding by centrifugal/airflow spheroidizer to wear down edges and densify surfaces, achieving a sphericity of ≥0.85. For high-end products, mild surface modification is carried out simultaneously to improve the compatibility between graphite and electrolyte.
04

Classification and Post-treatment

Precision classification is conducted by air classifier to sieve out unqualified particles and strictly control key particle size indicators. Followed by magnetic separation for iron removal (iron content ≤50ppm) and secondary drying in sequence, the finished products are sieved and packaged after thorough impurity and water removal to ensure batch consistency.
Green Coke
Grinding and Shaping Process of Graphite Anode Material

Grinding and Shaping Process of Green Coke

  • The raw materials are crushed by a mechanical crusher into powder with a D50 particle size of 6~18μm.
  • The crushed powder is fed into a shaping and classification system equipped with a JCSM-WH shaping machine, where the particles are gradually shaped into a quasi-spherical form.
  • Precise control is carried out during the shaping process to make the material’s particle size, tap density and other indicators meet the specific requirements of D10, D50 and D90.
  • The system is equipped with an ultra-fine classifier, which can separate the ultra-fine particles generated in the shaping process in real time.
calcined coke
Grinding and Shaping Process of Graphite Anode Material

Grinding and Shaping Process of Calcined Coke

  • The raw materials are ground by a roll mill to produce powder materials with a particle size D50 of 6~18μm, which are then conveyed to a professional shaping and classification system equipped with the JCSM-V shaping machine for subsequent processing.
  • In the system, the powder particles are gradually shaped into a near-spherical form through a refined shaping process. During the process, core particle size indicators such as D10, D50 and D90 are strictly controlled, and key parameters such as tap density are accurately regulated to ensure that all indicators meet the requirements specified by the customer.
  • This shaping and classification system is also equipped with an ultra-fine classifier, which can timely and efficiently separate the ultra-fine particles generated during the shaping process, effectively preventing them from mixing into the finished products and ensuring the particle size uniformity and overall quality of the final products.
Natural Flake Graphite
Grinding and Shaping Process of Graphite Anode Material

Grinding, Classification, Shaping and Coating Process of Natural Flake Graphite

  • Natural graphite with a fine flake structure of ≤100 mesh and a carbon content of over 90%-95% is selected as the raw material, and the core process flow is grinding — spheroidization — purification — shaping and classification — coating — carbonization — deagglomeration — screening — finished product.
  • The raw material is first subjected to ultra-fine grinding by the special JCSM710 grinding mill to refine the particle size to micro-powder with a D50 of 21-23μm. Then, through the series process of the JCSM510 equipped with the JCSF280 classifier, spheroidized graphite particles with a D50 of 19-20μm are prepared. After pneumatic conveying, the particles enter the series process of the JCSM410 equipped with the JCSF280 classifier and are shaped into potato-shaped graphite particles with a D50 of 16-17μm.
  • The shaped semi-finished products undergo a chemical purification process to upgrade the carbon content of the graphite particles to 99.95%-99.99%.
  • Subsequently, re-shaping and classification of particle size are carried out in accordance with customer requirements. Effective coating is completed by a special coating machine and other solvents, and the coated particles are sent to a graphitization furnace for high-temperature carbonization.
  • The carbonized materials are deagglomerated by a deagglomerator and subjected to screening treatment, and finally packaged as finished products after passing the inspection.
Pitch
Grinding and Shaping Process of Graphite Anode Material

Jet Milling and Classification Process for Pitch

  • In the production of artificial graphite, pitch serves as an indispensable binder and coating agent.
  • A complete milling system consisting of a jet mill, dust collector and induced draft fan is specially designed for pitch materials.
  • Filtered and dried compressed air is injected into the milling chamber at supersonic speed through Laval nozzles. In the intersection area of multiple high-pressure air streams, the pitch materials undergo repeated collision, friction and shearing to achieve fine milling.
  • The milled pitch particles are drawn by the suction of the induced draft fan and enter the classification zone with the ascending air flow. Driven by the centrifugal force generated by the high-speed rotating classification turbine, coarse and fine materials are effectively separated.
  • Fine particles meeting the particle size requirements pass through the classifier wheel, enter the cyclone separator and dust collector for collection, and are thus obtained as finished products.

    Unqualified coarse particles fall back into the milling chamber and undergo cyclic re-milling until they meet the specified particle size standards.