Ultrafine Vertical Mill Revolutionizes Graphite Powder Processing

Modern industries such as lithium-ion batteries, conductive polymers, and thermal interface materials require graphite powders with D97 ≤5μm (2,500 mesh) and strict morphology control. The LUM Ultrafine Vertical Mill series delivers 325-2,500 mesh adjustability, 1.6-15 t/h throughput, and 45% lower energy consumption compared to jet milling systems, making it the optimal choice for high-purity graphite production.

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2. Technical Advantages of LUM Ultrafine Vertical Mills

2.1 Core Innovations

• Multi-Rotor Classifier System: 3-stage independently adjustable rotors achieve ±0.3μm particle uniformity.
• Non-Metallic Grinding Components: Zirconia ceramic rollers (Mohs 8.5) eliminate iron contamination (<5ppm).
• Negative Pressure Operation: Oxygen levels <8% prevent graphite oxidation during processing.

3. Advanced Grinding Mechanism

3.1 Three-Stage Refinement Process

1. Primary Crushing: Hydraulic pre-breaker reduces 0-20mm feed to 1-3mm particles.
2. Roller Compression：4 grinding rollers exert 8–12 MPa pressure to preserve the graphite flake structure (aspect ratio >15:1).
3. Dynamic Classification：The airflow classification system removes particles >5μm in real time, achieving a recirculation rate <5%.

4. Case: LUM1836 in Battery Anode Production

4.1 Project Overview

• Client: Jiangsu Graphite Tech Co., Ltd
• Challenge: Produce 5μm spheroidized graphite for EV batteries
• Previous System: Jet mill with 580 kWh/t energy cost

4.2 Results with LUM1836

Metric	Performance
Throughput	12.8 t/h (D97=5.2μm)
Energy Savings	52% vs. jet mill
Carbon Content	99.95% (0.03% ash)

5. LUM Series Technical Specifications

Model	LUM1525	LUM1632	LUM1836
Host Power	220–250 kW	280–315 kW	355–400 kW
Capacity (t/h)	1.6–11.5	2–13.5	2.3–15
D97 Range	5–30 μm (325–2,500 mesh)

6. Future-Ready Graphite Milling Solutions

6.1 Emerging Technologies

• AI-Driven Morphology Control: Real-time SEM feedback adjusts roller pressure profiles.
• Hydrogen Atmosphere Grinding: Reduces particle agglomeration by 70%.
• Carbon-Neutral Operation: Solar hybrid systems (e.g., 300kW PV array for LUM1836).

7. LUM Series as the Industry Benchmark

The LUM Ultrafine Vertical Mill series sets new standards with its 15 t/h capacity at 2,500 mesh, <20mg/m³ dust emissions, and full-process automation. As demand grows for 3-5μm battery-grade graphite, LUM’s modular design and smart predictive maintenance ensure long-term competitiveness.

Implementation Tip: Conduct material tests for moisture content (<1% recommended) and hardness (Mohs ≤3 optimal) to maximize LUM mill efficiency.