The demand for high-performance, visually stunning pearlescent pigments in the automotive coatings industry is relentless. Achieving the brilliant shimmer and deep luster characteristic of premium finishes hinges on one critical factor: preserving the structural integrity of mica platelets during the grinding process. Conventional jet milling techniques present a significant dilemma, often fracturing these delicate crystals, reducing the crucial aspect ratio to sub-optimal levels near 5:1. This degradation directly impacts light reflectance, pushing figures below the critical 70% threshold at the essential viewing angle of 25°, significantly diminishing the desired optical effect. Advanced solutions in mineral processing are required.
Our cutting-edge LUM Ultrafine Vertical Grinding Mill provides the definitive answer to the automotive pearlescence challenge. Independently designed and manufactured based on decades of grinding expertise, the LUM series stands as a pinnacle of technology for producing ultrafine powders with unmatched precision.
Unlike abrasive jet mills, the LUM mill utilizes a revolutionary **Multi-Layer Rotor Design**. This patented configuration is engineered to minimize shear forces and impact stress – the primary culprits behind crystal cleavage and platelet damage. By leveraging controlled, gentle grinding forces primarily through inter-particle compression and attrition rather than violent impact, the LUM mill achieves a breakthrough: preserving mica platelet aspect ratios of at least 10:1. This superior structural integrity is fundamental for optimal light interaction.
The result of preserving the 10:1 aspect ratio is spectacularly evident in the optical properties:
Producing pigment is only part of the story; ensuring it performs reliably under demanding conditions is another. Pigments processed through the LUM mill provide the foundation for coatings that pass rigorous quality hurdles:
The LUM series offers models specifically calibrated for high-volume production scales common in automotive pigment manufacturing, such as the LUM1525 and LUM1632, delivering capacities ranging from 4 to 14 tons per hour. This throughput capability, combined with its precision processing, makes it the industrial solution of choice.
The LUM mill’s exceptional control over particle characteristics is evident in its specifications:
Key LUM Ultrafine Vertical Mill Specifications
| Model | Capacity Range (t/h) | Main Motor Power (kW) | Key Particle Control Example (D97) |
|---|---|---|---|
| LUM1525 | 2.2 – 11.5 | 220~250 | 5±0.5 μm achievable |
| LUM1632 | 2.0 – 13.5 | 280~315 | 5±0.5 μm achievable |
| LUM1836 | 2.3 – 15 | 355~400 | 5±0.5 μm achievable |
The LUM Ultrafine Vertical Grinding Mill transcends traditional milling limitations. Its advanced **Shear-Free Delamination** mechanism, facilitated by the Multi-Layer Rotor Design, represents a significant leap forward in the processing of delicate minerals like mica for premium applications. By preserving the essential 10:1 aspect ratio, the LUM mill unlocks the full optical potential of pearlescent pigments, delivering both breathtaking aesthetics and the robust, long-lasting performance demanded by the global automotive industry.
For manufacturers focused on leading the market with the brightest, most consistent, and durable pearlescent finishes, our LUM Ultrafine Vertical Grinding Mill delivers the critical technological advantage. It’s not just grinding; it’s precision engineering for optical brilliance.
