ZINC OXIDE SAFETY SIEVING AND CLASSIFICATION

Zinc oxide powders are characterized by a tendency to form agglomerates, which can result from production processes or handling conditions. These granules often fall outside the target particle size range, affecting flowability, dispersion, and the final application performance, especially in high-value sectors such as cosmetics and pharmaceuticals.

Safety sieving is typically the first step to remove foreign bodies and protect downstream equipment. This operation ensures that any contaminants or oversize particles are intercepted before the product enters sensitive process stages. MLT Cuccolini VP2 vibrating sieves are well suited for this purpose, offering reliable performance when installed under silos, sack tip stations, or feeding systems, with consistent throughput and effective removal of unwanted material.

In addition to safety sieving, accurate classification is required to achieve a defined and narrow particle size distribution. A key aspect of zinc oxide processing is the possibility to recover valuable product from agglomerates. Thanks to the use of appropriate mesh cleaning systems, these granules can be gently broken-down during screening, allowing fine particles to pass through the mesh and be reintegrated into the on-spec fraction. This result is also achievable within the context of safety sieving.

MLT Cuccolini VPB and VPM vibrating sieves are particularly effective for this classification stage. Installed along conveying lines or after milling and blending processes, these machines provide precise separation while preserving product integrity. Their calibrated vibration ensures that agglomerates are disaggregated without generating excessive fines or altering the material properties.

With the correct machine configuration and process setup, it is possible to achieve high-efficiency classification even below 100 microns. This level of control enables the production of zinc oxide grades suitable for demanding applications, including cosmetics and pharmaceutical formulations, where strict quality requirements must be met.

Both VPB and VPM models offer flexibility in terms of mesh size selection and throughput, allowing adaptation to different plant layouts and production needs. Stainless steel construction, ease of cleaning, and compatibility with hygienic design standards further support their use in sensitive applications.

Using MLT Cuccolini vibrating sieves for zinc oxide safety sieving and classification ensures high product quality, with effective removal of contaminants and precise control of particle size distribution. The ability to recover usable material from agglomerates also reduces waste and improves overall process efficiency.

Reliable operation, gentle handling, and flexible configuration make these solutions suitable for both industrial and high-purity applications, supporting consistent performance over time.

Contact MLT Cuccolini to discuss your zinc oxide process and identify the most suitable vibrating sieving solution for your specific application.