In today’s demanding industrial landscape, product purity has become a non-negotiable requirement across numerous sectors, including pharmaceuticals, food processing, ceramics, and high-tech materials. The presence of even minute contaminants during the grinding process can compromise product quality, affect chemical properties, and lead to significant financial losses. At Shanghai Zenith Machinery Co., Ltd., we have dedicated our research and development efforts to creating grinding systems that not only deliver exceptional fineness and efficiency but also guarantee unparalleled purity. Our contamination-free grinding solutions are engineered to meet the most stringent industry standards, ensuring that the integrity of your material is maintained from feed to final product.

Our philosophy centers on preventing contamination at its source. Traditional grinding mills often suffer from issues like metal-to-metal wear, inadequate sealing, and internal design flaws that trap material, leading to cross-contamination between batches. Zenith’s grinding systems address these challenges through several key innovations:
For applications requiring the highest levels of purity combined with ultrafine grinding capabilities, our LUM Ultrafine Vertical Mill represents the cutting edge of contamination-free technology. This innovative system integrates grinding, drying, classifying, and conveying into a single, compact unit that minimizes potential contamination points while maximizing operational efficiency.
The LUM series features a unique grinding mechanism that minimizes direct metal-to-material contact through advanced roller technology and specially formulated grinding paths. The intelligent control system maintains optimal operating parameters throughout the process, ensuring consistent product quality while preventing thermal degradation that can occur in less sophisticated mills.
| Model | Main Machine Power (kW) | Capacity (t/h) | Size Distribution D97 (μm) |
|---|---|---|---|
| LUM1525 | 220-250 | 1.6-11.5 | 5-30 |
| LUM1632 | 280-315 | 2.0-13.5 | 5-30 |
| LUM1836 | 355-400 | 2.3-15 | 5-30 |
With its ability to produce powders with D97 values ranging from 5-30μm, the LUM Ultrafine Vertical Mill is ideally suited for pharmaceutical active ingredients, high-purity ceramics, specialty chemicals, and advanced battery materials where even microscopic contaminants would be unacceptable.

For operations requiring flexibility across multiple material types while maintaining strict purity standards, our XZM Ultrafine Grinding Mill offers an exceptional balance of performance and contamination control. This mill is particularly effective for processing soft to medium-hard materials with moisture content below 6%, achieving remarkable fineness levels between 325-2500 mesh.
The XZM series incorporates several contamination-prevention features, including specially treated grinding surfaces that resist wear and shedding, advanced sealing systems at all material transfer points, and optimized internal geometries that prevent material stagnation. The mill’s classification system ensures precise particle size control without the need for external screening equipment that can introduce contamination risks.
| Model | Working Diameter (mm) | Max Feed Size (mm) | Final Size (mesh) | Output (kg/h) | Main Motor Power (kW) |
|---|---|---|---|---|---|
| XZM221 | Φ800 | ≤20 | 325-2500 | 500-4500 | 75 |
| XZM268 | Φ1680 | ≤20 | 325-2500 | 5000-25000 | 315 |
The XZM Ultrafine Grinding Mill has proven particularly valuable in food processing (spices, food additives), cosmetic manufacturing (talc, mica), and mineral processing where color consistency and chemical purity are paramount.
In pharmaceutical manufacturing, contamination control isn’t just about product quality—it’s a regulatory requirement. Our grinding systems provide GMP-compliant solutions for processing active pharmaceutical ingredients (APIs), excipients, and other critical materials. The fully enclosed designs prevent cross-contamination between batches, while the easy-clean features support validation protocols and reduce cleaning validation burdens.
The production of advanced ceramics, battery materials, and electronic components demands extreme purity levels where even parts-per-million contamination can dramatically alter material properties. Zenith’s contamination-free grinding systems maintain material integrity through carefully selected construction materials and processing environments that prevent the introduction of foreign elements that could compromise conductivity, catalytic activity, or structural performance.
Consumer safety drives the need for purity in food processing. Our grinding systems eliminate risks of metallic contamination while preventing microbial growth through optimized thermal management and moisture control. The smooth, accessible internal surfaces and absence of dead zones ensure complete cleanability between product runs, supporting allergen control protocols and quality assurance standards.

At Zenith, we recognize that achieving contamination-free grinding extends beyond the equipment itself. We provide comprehensive support services including:
In an increasingly quality-conscious global market, the ability to deliver consistently pure products provides a significant competitive advantage. Shanghai Zenith Machinery’s contamination-free grinding systems represent the culmination of decades of research and practical experience in powder processing technology. By integrating advanced engineering, material science, and process control, we provide solutions that protect your product integrity while delivering the performance and efficiency demanded by modern industry.
Whether you’re processing pharmaceuticals that will improve lives, advanced materials that will power future technologies, or food products that will nourish families, our grinding systems provide the purity assurance you need. Contact our technical team to discuss how our contamination-free grinding solutions can enhance your product quality and operational efficiency.