Fine chemical products are characterized by fine particle size, easy agglomeration, high static electricity and high added value. Conventional vibrating screens suffer frequent mesh clogging, low classification accuracy and poor efficiency when processing powders finer than 300 mesh, failing to meet production requirements. Integrating mechanical vibration and high-frequency ultrasonic excitation technology, ultrasonic vibrating screens deliver an efficient solution for powder sieving in fine chemicals with extensive applications and remarkable performance.
In the pigment and coating sector, fine chemical materials such as pigment micropowders and powder coatings carry strong static electricity and tend to stick together. Traditional screens face a mesh clogging rate of over 45%, requiring frequent shutdowns for mesh cleaning. Equipped with 28–45 kHz high-frequency ultrasonic oscillation, ultrasonic vibrating screens eliminate electrostatic adsorption on material surfaces and break up agglomerated particles, cutting the clogging rate below 8%. After adopting this equipment, a pigment manufacturer in Hebei raised the screening pass rate of 800-mesh pigment powder from 91% to 98%, boosted throughput by 35%, and saved 120,000 RMB in annual mesh cleaning costs.
For nano and ultra-fine powders including ceramic powder, titanium dioxide and silica with particle sizes ranging from 5 to 45 μm, ultra-strict classification precision is required. Ultrasonic vibrating screens achieve classification accuracy down to 5 microns and stably realize precise grading of powders above 1500 mesh. An Anhui ceramic powder producer saw its qualified rate of 600–800 mesh powder rise from 82% to 98%, with a stable throughput of 1.1 tons per hour and a 25% improvement in production efficiency.
In chemical additives and raw material production, sulfur powder, resin powder, cosmetic raw materials and other viscous, corrosive substances cause severe corrosion and incomplete separation on ordinary screens. Ultrasonic vibrating screens can be customized with 304 stainless steel or PTFE coatings to resist corrosive materials, and multi-layer screen decks enable simultaneous grading and impurity removal. An explosion-proof ultrasonic vibrating screen deployed for pigment sieving at a Jiangsu chemical enterprise reaches a classification precision of 99%, supporting the company to obtain EU environmental certifications.
Furthermore, ultrasonic vibrating screens achieve an energy utilization rate of 92%, far exceeding conventional screening equipment. Their mild high-frequency vibration prevents thermal-sensitive materials from denaturation, matching the demand for clean and high-efficiency production in fine chemicals. As the fine chemical industry raises higher standards for product quality, ultrasonic vibrating screens will evolve into core grading equipment and drive high-quality industrial development.