Ultrasonic Vibrating Screen for Ultrafine Powder

Ultrafine powder is produced by preprocessing various base materials such as alloy raw materials, ore raw materials, chemical materials and medical materials to remove internal impurities, agglomerates and oversized unqualified particles. The preprocessed raw materials are then sent to dedicated equipment including airflow pulverizers and ultra-fine grinders for deep processing, so as to produce micron-sized ultrafine powder with different particle sizes.

Ultrafine powder applied in different industries features distinct screening standards and operational difficulties, and high-precision screening has always been a core challenge in powder production. Conventional screening equipment commonly suffers from severe screen mesh blocking, powder agglomeration, low classification accuracy, material oxidation and dust leakage, which fail to meet the production requirements of high-end powder materials. The applicable materials include metal ultrafine powder with graded particle sizes for the 3D printing industry, battery powder for positive and negative electrodes in the new energy industry, ultra-fine ceramic powder for precision ceramics, sterile raw powder for pharmaceutical preparation, and composite powder for the chemical industry. All the above high-value ultrafine powders require specialized equipment for fine screening and classification.

In terms of ultrafine powder across industries, the mainstream particle size for ultra-fine powder adopted in high-end manufacturing, biomedicine and new energy sectors ranges from 25μm to 80μm.

XIAN FENG recommends an ultrasonic vibrating screen for conventional fine powder materials and low-viscosity materials that are not prone to agglomeration. Equipped with an ultrasonic screening auxiliary system, the equipment fundamentally solves the mesh blocking problem of fine powder and delivers high working efficiency, suitable for most basic powder screening scenarios. Additionally, it supports operation in a sealed inert gas atmosphere, which prevents powder oxidation and dust leakage, and greatly improves particle classification accuracy, making it applicable to the production and recycling of high-value-added ultrafine powder.

For ultrafine powder that is prone to agglomeration, high in viscosity and accuracy requirements and sensitive to powder activity, the ultrasonic swinging screen is recommended. Simulating the manual swinging screening principle and equipped with an ultrasonic anti-blocking system, the equipment provides gentler screening to effectively maintain the inherent properties of powder materials.