With the continuous development of the global mining industry, iron ore processing plants are facing increasingly stringent requirements for higher throughput, improved screening efficiency, and extended equipment service life. Against this background, banana vibrating screens have become a preferred solution for iron ore classification, thanks to their large processing capacity, multi-slope screening design, and excellent separation performance.
Recently, GN Separation successfully completed the manufacturing of a Double-Layer Banana Vibrating Screen (Model GNBD3073) for an iron ore classification project. The equipment is now fully prepared for delivery and on-site installation, highlighting GN’s strong engineering capabilities and manufacturing expertise in heavy-duty screening applications.
The GNBD3073 Double-Layer Banana Vibrating Screen is specifically engineered for harsh mining environments characterized by high impact loads, abrasive materials, and continuous operation. The side wall panels of the screen adopt a non-welded structural design, fabricated from high-strength alloy steel plates with excellent impact toughness. Hydraulic tension assembly using imported Huck rivets is applied instead of conventional welding, effectively eliminating welding-induced residual stress and significantly enhancing structural reliability and fatigue resistance.
To ensure stable operation and extended service life, GN engineers conducted comprehensive finite element analysis (FEA) to optimize both the structural layout and vibration parameters. This optimization ensures that the screen avoids natural frequencies across all operating conditions, minimizing the risk of resonance, reducing vibration-related damage, and prolonging the overall service life of the equipment.
The cross beams beneath the screen deck utilize a rectangular tubular structure, providing strong and stable support. The excitation beam box features a lightweight yet high-strength design, delivering excellent toughness without compromising rigidity. All critical welded components undergo post-weld heat treatment, effectively relieving internal stress and further improving long-term operational stability.
For enhanced wear and corrosion resistance, the beam surfaces are coated with polyurea using spray equipment imported from the United States. In addition, rubber protective components are installed in areas exposed to severe impact and abrasion. These protective measures significantly improve resistance to erosion and wear, ensuring reliable performance under demanding iron ore screening conditions.
The GNBD3073 Double-Layer Banana Vibrating Screen is equipped with a high-efficiency helical gearbox-type exciter, capable of generating ultra-large excitation force while maintaining low noise levels and stable operation. The exciter is designed for long service life with reduced maintenance requirements. The eccentric blocks are mounted outside the exciter housing, allowing operators to easily adjust vibration amplitude by modifying the counterweight configuration to suit different materials and processing conditions.
To meet diverse customer requirements, GN banana vibrating screens are offered as a serialized product range, adaptable to various production capacities and process flows. The screens utilize modular polyurethane screen panels, which provide excellent wear resistance, strong interchangeability, and rapid replacement. This modular design significantly reduces downtime and lowers overall operating and maintenance costs.
Through this successful iron ore classification application, GN Separation once again demonstrates its commitment to delivering high-efficiency, reliable, and cost-effective screening solutions for the global mining industry. GN will continue to focus on technological innovation and product optimization, providing advanced vibrating screening equipment to support customers worldwide in achieving efficient and sustainable mineral processing operations.