Coal-based activated carbon is widely used in water treatment, air purification, and industrial catalysis. This is due to its well-developed pore structure and superior adsorption properties. Recently, Episches Pulver provided a customized ultrafine grinding of Coal-Based Activated Carbon solution for an Australian client. This solution helped them enhance the market competitiveness of their activated carbon products.
Project Background
The Australian client is a well-known local supplier of environmental protection materials, specializing in high-quality coal-based activated carbon. To meet the rigorous requirements of specific industrial filtration systems regarding reaction speed and adsorption efficiency, the client needed to further refine their activated carbon particles.
Core Requirements:
- Particle Size Specification: The final product must reach D90: 45μm, with a particle size distribution (PSD) as concentrated as possible.
- High Efficiency & Energy Saving: The process must achieve ultrafine grinding while maintaining controlled energy consumption to reduce production costs.
- Equipment Durability: Since activated carbon is abrasive, the equipment must possess strong wear resistance to ensure long-term stable operation.
Ultrafine Grinding of Coal-Based Activated Carbon Technical Solution
Based on the material characteristics and the client’s targets, Epic Powder recommended the MJW Series Luftklassierermühle (ACM). This equipment integrates grinding and classification into a single system, making it the ideal choice for processing materials of medium hardness.
- Ausrüstung: Epic Powder Air Classifier Mill (ACM).
- Process Flow: The material enters the grinding chamber via a quantitative feeding system. It is then pulverized by impact, shear, and collisions. These forces occur between the high-speed rotating hammers and the liners.
- Precision Classification: The system features a built-in vertical classifier wheel. It precisely intercepts particles larger than 45μm by adjusting the rotation speed. These particles return to the grinding zone to ensure the final D90 consistently meets the target.
- Temperature Control & Protection: A high-volume airflow is utilized for pneumatic conveying. This airflow effectively carries away the heat generated during grinding. This process protects the pore structure of the activated carbon from thermal damage.
Experimental Data & Results
Following multiple tests at the Epic Powder testing center, the final operational data delivered to the client were as follows:
| Item | Client Requirement | Operational Result |
| Final Particle Size (D90) | ≤ 45μm | 42.3μm |
| Output Capacity | Meet industrial scale | Stable operation, reached target tonnage |
| Adsorption Value Retention | No impact on performance | Pore structure intact, no significant loss in adsorption |
| Particle Size Distribution | Narrow distribution | Concentrated curve, no leakage of large particles |
Key Advantages
- Präzise Partikelgrößenkontrolle: The specialized classification system of the ACM easily achieves the D90: 45μm goal. It also avoids the “over-grinding” common in traditional mills.
- Convenient Maintenance: The MJW Series ACM features a scientific, easy-open door design. This allows for quick inspection of hammers and replacement of wear parts, significantly reducing downtime.
- Strong Adaptability: This equipment is highly suitable for coal-based activated carbon. It also shows excellent processing compatibility with porous carbon, graphite, and other carbonaceous materials.
Abschluss
The successful collaboration with this Australian client reflects Episches Pulver’s deep technical expertise in the field of carbon material processing. Our Air Classifier Mill systems not only assist clients in achieving ultrafine refinement but also increase product value through precise PSD control.