1. Project Background
The client is a prominent electronic materials supplier in India. They specialize in glass powder (glass frit) for semiconductor packaging, electronic pastes, and precision ceramic sealing. Glass is a high-hardness material. It is also extremely sensitive to impurities. Consequently, traditional mechanical milling often faces two major challenges. First, equipment wear causes metal contamination. Second, uneven particle size distribution leads to unstable sintering performance. To solve this, the client required a specialized solution for the Ultra-Fine Grinding of Electronic Glass Powder. Their goal was to achieve a strict D100 < 20μm limit while maintaining a stable throughput of 70 kg/h.
2. Technical Solution: Epic Powder Jet Mill System for Ultra-Fine Grinding of Electronic Glass Powder
We implemented the Epic Powder Fluidized Bed Jet Mill solution. This system meets the dual requirements of high hardness and high purity.
Core Technical Advantages:
- Wear-Resistant Protection: The system utilizes advanced ceramic lining (Alumina or Silicon Carbide). This not only extends the equipment’s lifespan but also ensures zero metallic ion contamination, preserving the dielectric properties of the glass powder.
- Precision Classification: The system features an ultra-fine turbine classifier. By adjusting the centrifugal speed, it precisely intercepts any particles larger than 20μm. This achieves total D100 control.
- Cool Processing: The adiabatic expansion of the compressed air prevents physical or chemical changes in the glass powder that could otherwise be caused by localized overheating.
The production run successfully achieved the following benchmarks:
3. Key Outcomes
- Top-Cut Control: Achieving a D100 of 20μm means that absolutely no single particle exceeds the 20-micron limit. This level of consistency is critical for flowability and packing density in electronic packaging processes.
- Optimized Morphology: The resulting powder features a uniform angular shape, which enhances bonding strength in downstream applications.
- Low Operational Cost: Thanks to the targeted wear-resistant design, the replacement cycle for key components has been significantly extended, lowering the long-term operational costs for our Indian client.