GN Double-layer Banana Screen for Iron Ore Application
With the continuous development of the global mining industry, iron ore processing plants are facing increasing demands for higher throughput, higher screening efficiency, and longer equipment service life. As a result, banana vibrating screens have become a preferred solution for iron ore classification due to their large processing capacity, multi-angle screening design, and excellent separation performance.
Recently, GN Separation completed the manufacturing of a Double-Layer Banana Vibrating Screen (Model GNBD3073) for an iron ore classification project. The equipment is currently prepared for delivery and on-site installation, reflecting GN’s engineering capabilities in heavy-duty screening applications.
The GNBD3073 banana screen is designed specifically for harsh mining conditions characterized by high impact loads, abrasive materials, and continuous operation. The side wallboards of the screen machine adopt a non-welded structure, manufactured from high-strength alloy steel plates with excellent impact toughness. Instead of welding, imported Huck rivets are used for hydraulic tension assembly, effectively eliminating welding residual stress and significantly improving structural reliability and fatigue resistance.
To ensure stable operation and long service life, GN engineers conducted finite element analysis (FEA) to optimize both the structural design and vibration parameters. This approach allows the screen to avoid natural frequencies at all operating levels, reducing the risk of resonance and minimizing vibration-related damage, thereby extending the overall service life of the equipment.
The cross beams beneath the screen deck feature a rectangular tube design, providing a strong and stable support structure. The excitation beam box adopts a lightweight design while maintaining high strength and excellent toughness. Key welded components undergo post-welding heat treatment, which effectively relieves welding stress and enhances long-term operational stability.
For improved 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 strong impact and abrasion. These measures significantly enhance resistance to erosion and wear, ensuring reliable performance in demanding iron ore screening applications.
The GNBD3073 is equipped with a high-efficiency helical gear box-type exciter, which delivers super-large excitation force while maintaining ultra-low noise and stable operation. The exciter is designed for long service life and reduced maintenance requirements. The eccentric blocks are arranged outside the exciter box, allowing operators to easily adjust the vibration amplitude by changing the counterweight configuration to suit different materials and process conditions.
To meet diverse customer requirements, GN banana vibrating screens are serialized products, capable of adapting to various production capacities and process flows. The screen adopts modular polyurethane screen panels, which offer excellent wear resistance, strong versatility, and quick replacement. This modular design greatly reduces downtime and lowers overall operating and maintenance costs for customers.
With this successful iron ore application, GN Separation once again demonstrates its commitment to providing high-efficiency, reliable, and cost-effective screening solutions for the global mining industry. GN will continue to focus on technological innovation and product optimization, delivering advanced vibrating screening equipment to support customers worldwide in achieving efficient and sustainable mineral processing operations.