Drawer Magnet

       The drawer magnet operates on the principles of gravitational descent and high-gradient magnetic adsorption. After material enters the device through the feed inlet or chute, it falls freely under gravity and passes through an internal multi-layer magnetic rod grille. The surface of the magnetic rods generates a high-intensity magnetic field of 12,000–14,000 gauss, which strongly attracts ferromagnetic contaminants in the material. Iron filings, iron powder, screws, welding slag, and other metallic impurities adhere firmly to the surface of the magnetic rods, while the clean material flows smoothly through the grille gaps, achieving automatic separation and purification. Once a sufficient quantity of ferrous contaminants has accumulated, the entire magnetic grate assembly can be periodically removed for cleaning and reused. Meanwhile, the staggered multi-layer magnetic rod design effectively eliminates magnetic blind spots, ensuring that the material maintains efficient and stable ferrous contaminant removal throughout its passage.

Features and Advantages

• High Magnetic Separation Capability: The magnetic field strength on the surface of the magnetic rods reaches 12,000–14,000 gauss, effectively capturing micron-sized iron powder and weakly magnetic impurities.
• Drawer-Type Quick-Cleaning Design: The entire magnetic grate can be swiftly extracted for cleaning without dismantling pipelines or shutting down the system, significantly boosting production efficiency.
• Multi-Layer Grille Design: Supports single-, double-, and multi-layer magnetic rod arrangements, increasing the contact time between the material and the magnetic field for more thorough ferrous contaminant removal.
• Compact Structure with Flexible Installation: Can be directly mounted on hoppers, chutes, feed inlets, vibrating screen outlets, and other locations, adapting to various production line layouts.
• Energy-Free Eco-Friendly Operation: Utilizes a purely permanent-magnet structure, requiring no electrical power—zero energy consumption, silent operation, and low running costs.
• Food-Grade Hygienic Design: Material-contact parts are made of 304/316L stainless steel, with smooth surfaces that are easy to clean, meeting food and pharmaceutical industry standards.

Optional Configurations

• Magnetic Field Strength Options: 8,000 gauss / 10,000 gauss / 12,000 gauss / 14,000 gauss
• Magnetic Rod Material Options: NdFeB permanent-magnet rods (standard / high-temperature resistant)
• Housing Material Options: SUS304 / SUS316L / Powder-Coated Carbon Steel
• Grille Configuration Options: Single-layer / Double-layer / Multi-layer grille structures
• Magnetic Rod Arrangement Options: Customization with 3 tubes / 5 tubes / 7 tubes / 9 tubes / 11 tubes / 16 tubes
• Connection Interface Options: Flanged Connection / Quick Clamp / Flexible Coupling
• Additional Options: Dust-Sealing Rings / Vibration-Assist Devices (to prevent material blockage)

Applications

• Plastics Industry: Used for ferrous contaminant removal during feeding and blending processes, effectively eliminating iron chips, screws, and iron powder to prevent damage to extruders and molds.
• Food Industry: Employed in the magnetic separation and purification of food raw materials at the feeding and sieving stages, removing metallic impurities to ensure food safety and hygiene standards.
• Chemical Industry: Applied to the ferrous contaminant removal and purification of chemical powders, reducing the impact of metal impurities on product color, purity, and performance.
• Lithium-Ion and New Energy Industries: Used for ferrous contaminant removal in high-purity materials such as lithium battery cathode and anode powders and graphite powder, eliminating trace amounts of ferromagnetic impurities.
• Mineral Powders and Building Materials Industry: Employed in the purification of mineral powders to enhance whiteness and purity, thereby improving the quality of downstream applications.
• Pharmaceutical Industry: Used for ferrous contaminant removal in pharmaceutical powders and raw material powders, meeting GMP clean-production requirements and ensuring drug safety and consistency.

Materials Processed

• Plastic Powders: PP, PE, ABS, PC, PET recycled resins, and color masterbatches
• Food Powders: Wheat flour, starch, milk powder, powdered sugar, cocoa powder, seasonings
• Pharmaceutical Powders: Active pharmaceutical ingredients, traditional Chinese medicine powders, excipient powders, health supplement powders
• Chemical Powders: Resin powders, pigment powders, dye powders, additive powders
• New Energy Powders: Lithium battery cathode and anode materials, graphite powder, conductive agent powders
• Mineral Powders: Quartz powder, calcium carbonate, kaolin, talc powder