With the soaring demand for high-end eco-friendly coatings in the European market, a renowned and prestigious coatings manufacturer in Italy sought to enhance the performance of its anti-settling agents and matting agents. In this production process, the ultrafine grinding of silica (precipitated/fumed silica) is the critical stage that determines the final paint’s transparency, dispersion, and anti-settling properties.
To meet the rigorous European rivestimento standards, the client urgently needed an ultra-fine grinding solution that could deliver high precision, maximum purity, and continuous, stable production.
Challenges Faced
Prior to integrating our new equipment, the client was held back by several technical pain points:
- Rigoroso Dimensione delle particelle Distribution: Coating-grade silica requires an extremely fine and uniform particle size. Any deviation easily creates a gritty texture on the film surface.
- Strong Material Adhesion: Silica possesses strong adsorption and high viscosity, making it incredibly prone to agglomeration and clogging in conventional grinding equipment.
- Balance Between Capacity and Energy Consumption: The client needed to maintain high industrial output while achieving ultra-fine target particle sizes.
Soluzione: Polvere epica MOW Series Mulino a getto d'aria
To address the client’s demanding requirements, we deployed the Epic Powder MOW Series Mulino a getto d'aria. This equipment utilizes supersonic air streams to cause violent collisions, friction, and shearing between material particles, achieving gentle yet highly efficient pulverization.
Below are the customized process parameters established for this project:
| Parametro | Impostazione / Risultato |
| Materiale | Silica (Bianco Carbone Nero) |
| Attrezzatura di base | Epic Powder MOW Series Air Jet Mill |
| Final Particle Size (d90) | 9.8μm |
| Capacità produttiva | 260kg/h |
Caratteristiche tecniche: The MOW series air jet mill features a highly efficient integrated horizontal classification system. By adjusting the classifier wheel’s speed and system air volume, the final particle size can be controlled with absolute precision. This perfectly solved the issues of over-grinding and agglomeration during the grinding process.
Results Achieved
By implementing the MOW series air jet mill for the ultrafine grinding of silica, this Italian client achieved remarkable commercial and technical benefits:
- Perfect Particle Size Control: The final product’s particle size was successfully controlled at d90 = 9.8μm with a narrow distribution, significantly enhancing the coating’s matting uniformity and anti-settling performance.
- High-Efficiency Continuous Production: Reaching a high capacity of 260kg/h, the system fully satisfied the client’s large-scale industrial manufacturing needs.
- Purity and Maintenance-Free Operation: Since the fresatura a getto process involves no mechanical grinding tools, zero wear is generated. This ensured the absolute purity of the silica and reduced downtime due to the machine’s strong self-cleaning capability.