Large-Scale Graphite Anode Material Fine Grinding Project in the United States

Project Background

A well-known graphite supplier in the United States aimed to expand its production capacity for lithium battery anode materials. The core requirement of the project was high-efficiency graphite grinding, converting raw graphite into ultrafine powder with a D50 of 3–5 µm while maintaining a single-line capacity of 1 t/h.

Due to graphite’s natural lubricity combined with high toughness, graphite grinding places stringent demands on equipment energy conversion efficiency and particle size distribution consistency. As a result, the customer required a highly reliable and industrially proven fine grinding solution.

Graphite Grinding Solution: Epic Powder MQW Series Jet Mill

To meet the customer’s demanding requirements for both high throughput and fine particle size, we delivered a turnkey system centered on the MQW Series fluidized-bed jet mill.

• High-Efficiency Grinding Performance:
  The MQW Series employs a multi-nozzle configuration to generate supersonic airflow.
  Materials undergo high-frequency, intense collisions at the nozzle intersection zones.
  While strictly achieving a D50 of 3–5 µm , the system successfully exceeded a single-unit throughput of 1 t/h.
• Precision Classification Control:
  An integrated high-precision horizontal classifier rotor accurately intercepts oversized particles via variable frequency control.
  The resulting graphite particles exhibit a smooth and rounded morphology, which contributes to improved compaction density of the battery anode.
• Complete Process Engineering Support:
  • Preliminary Validation:
    Dedicated graphite trials were conducted at our test center.
    Specific energy consumption was precisely calculated, and a detailed feasibility report was provided.
  • Customized Design:
    The automation control system and pressure vessels were designed in compliance with U.S. standards (UL / NEMA / ASME).

Consulting and Technical Support

• Process Definition and Planning:
  We developed a complete Process Flow Diagram (PFD) and preliminary plant layout.
  Factory space utilization was optimized accordingly.
• On-site Technical Supervision in the U.S.:
  Senior engineers were dispatched to the U.S. project site.
  Several weeks of on-site support were provided, covering mechanical installation, automation commissioning, and pre-job training for local operators.

Project Results