Focusing on the Challenges of Fine Powder Screening: Navector Small Particle Screening Machines Empower Efficient Production

With the rapid development of high-end manufacturing sectors such as lithium batteries, powder coatings, and fine chemicals, there are increasing demands for product particle size, uniformity, and cleanliness. Especially when particle sizes reach the micron level, materials are prone to static electricity and aggregation. Traditional screening equipment often struggles to meet the four core demands of screening efficiency, operational stability, production capacity, and cleanliness and safety.

Navector (Shanghai) Screening Technology Co., Ltd. deeply understands this industry trend and challenge. Since its establishment in 2005, it has focused on the innovative development of screening technology, providing leading, reliable, and efficient ultrafine powder screening solutions for customers.

I. Challenges in Small Particle Screening

In practical production and screening processes, the demand for small particles and ultrafine powders is increasing, but this has also exposed several issues, including but not limited to:

• Serious Mesh Blockage and Short Service Life

Traditional screening equipment often faces the problem of short mesh life. In actual production, the mesh often becomes clogged or worn within 12-24 hours of use, resulting in frequent downtime for maintenance or replacement. Furthermore, due to improper mesh tension or uneven tension, the mesh surface cannot maintain the desired flatness and stability, which further weakens its screening ability. As a result, materials cannot pass evenly through the mesh, significantly reducing screening efficiency, affecting capacity, and compromising product quality.

• Static Electricity Issues

Powder particles tend to generate static electricity during the screening process, causing them to stick together and form agglomerates. These agglomerates are much larger than the mesh aperture and therefore cannot pass through the screen.

The electrostatic issue leads to agglomeration and requires rework.

• Rework and Increased Costs Due to Mesh Blockage

Once the mesh becomes clogged, frequent cleaning or replacement is required. This not only disrupts production and reduces capacity, but also risks damaging the mesh structure. More importantly, repeated cleaning may introduce contamination, increasing manufacturing costs and defect rates.

• Capacity and Efficiency Cannot Meet Industrial Requirements

Traditional screening equipment often fails to meet efficiency requirements in industrial production. For special metal powders, such as high-nickel products, as screening time increases, the throughput per unit time decreases sharply. For extremely fine particles, such as those in the 3–5 µm range, traditional equipment faces clear capacity bottlenecks, struggling to break through low output levels and failing to support high-load, continuous production demands.

II. Navector's Systematic Solution

Navector’s small particle screening machine for the lithium battery industry is specifically designed for the sector. This equipment combines advanced ultrasonic screening technology with 3D vibration and swing vibration modes to efficiently prevent mesh blockage and particle embedding from 50 to 635 mesh, significantly enhancing screening capacity and extending the lifespan of the mesh.

• Ultrasonic Screening Technology

Navector's small particle screening machine is equipped with leading ultrasonic screening technology. This technology effectively prevents fine particles from electrostatically adhering to the mesh surface through high-frequency vibrations from ultrasonic waves, thus reducing blockage and particle embedding issues.

Resonance Excitation Concept (Conventional Concept)

Resonance Frequency Concept (Our Approach)

• 3D Vibration + Swing Vibration Mode

The equipment integrates 3D vibration and swing vibration modes, precisely controlling vibration frequency and amplitude to achieve even distribution of materials and efficient screening. This vibration mode effectively solves the issue of static particle agglomeration, making the screening process smoother.

Graph of Processing Capacity and Power Density
Solving the Clogging Problem Caused by Electrostatic Adsorption on the Screen

• Meets Strict Temperature Control Requirements

Navector's small particle screening machine features excellent system compatibility, ensuring low temperature rise during operation, enabling long-term stable operation that meets strict temperature control requirements. The equipment is suitable for powders ranging from 20 to 300 microns and is especially effective for handling materials with strong adsorption, high static electricity properties, easy agglomeration, and light specific gravity.

• High-Precision Screening and Increased Capacity

This equipment significantly improves screening capacity. In fact, for the same size, screening capacity can be increased by 2-4 times. This remarkable capacity improvement not only reduces downtime on the production line but also enhances production efficiency, ensuring precision and continuity in material distribution.

III. Significant Improvement in Quality and Efficiency

By adopting Navector's innovative technology, customers have not only effectively reduced static electricity and mesh blockage issues but also significantly improved production efficiency in several aspects. Furthermore, the design of the equipment effectively extends the mesh lifespan, reducing the frequency of replacements and lowering maintenance and downtime costs.

Maintaining Screen Tension under Repeated Use in a High-Frequency Environment

Stability and efficiency ensure continuous production and high-precision material screening, especially when dealing with ultrafine particles, meeting strict screening requirements. Navector's screening machines are widely used in sectors such as new energy battery materials, powder coatings, and photovoltaic silicon powder, helping enterprises enhance production efficiency and reduce costs.

As technology continues to evolve, Navector will remain committed to providing high-efficiency, precise screening equipment for more industries, driving further industrial upgrades.