1. Project Background
The client, a high-quality synthetic resin manufacturer based in Indonesia, required a solution for processing raw resin balls. These materials are typically thermoplastic, meaning they are highly sensitive to temperature; heat generated by mechanical friction during grinding can easily lead to material softening, clumping, or equipment clogging.
The core objective was to achieve large-scale, ultrafine grinding of resin balls while maintaining the material’s physical integrity, requiring a uniform particle size distribution and stable system operation.
2. Technical Challenges
- Strict Temperature Control: Due to the low softening point of the resin, the system must operate continuously at low or ambient temperatures.
- Balance of Fineness and Capacity: Achieving an ultrafine level of D50: 20μm while maintaining an industrial throughput of 200kg/h.
- Explosion Safety: Resin dust is inherently combustible; the system requires superior sealing and explosion-proof engineering.
3. Solution: Epic Powder Turbo Mill System
To address these material characteristics, Epic Powder provided a customized Turbo Mill system specifically optimized for the ultrafine grinding of resin balls.
Equipment Advantages & Configuration:
- High-Frequency Shearing: The rotor spins at high speeds (linear speeds exceeding $120m/s$), creating intense vortices and high-frequency pressure fluctuations. This allows the resin balls to collide with each other in the airflow (self-pumping grinding), significantly reducing mechanical heat.
- High-Volume Air Cooling: The system is equipped with a high-capacity induced draft fan. The massive airflow rapidly carries away heat from the grinding chamber, ensuring the material remains well below its softening point.
- Precision Classification: An integrated horizontal or vertical turbine classifier accurately intercepts particles larger than 20μm and returns them for re-grinding, ensuring the D50 strictly meets the target.
- Safety & Automation: The system utilizes a pulse jet dust collector for automatic cleaning and can be configured with an inert gas (Nitrogen) protection system for maximum safety.
4. Core Operational Parameters
The following table summarizes the actual performance parameters from the project site:
| Metric | Value | Remarks |
| Material | Resin Ball | Origin: Indonesia |
| Equipment Model | Epic Powder Turbo Mill Series | Customized wear-resistant type |
| Final Fineness | D50 = 20μm | Narrow particle size distribution |
| Production Capacity | 200kg/h | Under stable operating conditions |
| Feed Size | < 3-5mm | Recommended pre-treatment size |