Magnetic Rods & Bars for Separation
Magnetic rods and bars for separation are industrial iron removal devices designed for efficient removal of ferromagnetic contaminants. Their core material is rare-earth neodymium iron boron (NdFeB) permanent magnets, encased in 304 or 316L stainless steel tubing. They are widely used in industries such as food processing, pharmaceuticals, plastics, and general manufacturing to improve product purity and protect upstream and downstream equipment.
Common specifications include diameters of 10–100 mm and lengths of 200 mm to 2 meters. Thanks to the properties of rare-earth permanent magnets, they can operate in high-temperature environments up to 350°C. The ends of the magnetic rods are typically sealed and can be customized with threaded holes or lifting rings for integration into magnetic separation systems. Regular cleaning of collected iron particles and proper maintenance are essential for optimal performance.
-Product Highlights
This high intensity magnetic rod is designed for efficient separation of ferromagnetic contaminants in industrial applications. It features a core made of rare earth neodymium magnets, delivering strong magnetic force, excellent durability, corrosion resistance, and reliable performance in demanding environments.
Its smooth stainless steel surface allows for easy cleaning, and customized sizes are available to meet specific application and equipment requirements.
-Working Principle
The high intensity magnetic rod generates a powerful magnetic field through its internal magnetic core. When powders, granular materials, or liquid solutions pass through or around the rod, ferromagnetic contaminants are quickly attracted and retained on its surface.
This process ensures efficient magnetic separation and purification of materials, improving product quality and protecting downstream equipment.
The high-intensity magnetic plate is a permanent, flat-type magnetic separator that uses neodymium or ferrite magnets housed in 304/316L stainless steel casing. When materials pass over the plate, the strong magnetic field captures iron impurities. Suitable for chutes, conveyors, and feeding inlets handling powders, granular materials, and small bulk materials, it achieves over 98% iron removal efficiency with easy installation, maintenance, and zero operating energy consumption.
-Product Highlights
Pull-out Magnetic Rod (also known as Quick-Clean Magnetic Bar) is a high-intensity magnetic filtration device designed for rapid manual iron removal. It features a stainless steel outer tube, neodymium magnet core, and a central pull rod or handle. Suitable for liquids, slurries, and powders, it enables cleaning without opening the equipment and provides significantly higher efficiency compared to fixed magnetic rods. Widely used in lithium battery, fine chemical, food, and pharmaceutical industries.
-Working Principle
The pull-out magnetic rod works by using the magnetic end to attract iron particles.
When iron particles accumulate on the magnetic section, the operator pulls the rear handle, causing the internal magnetic core to retract inside the protective housing.
This action separates the magnetic field from the collected iron, causing impurities to automatically detach from the rod’s surface.
The self-cleaning pull-out mechanism eliminates the need for manual scraping, significantly improving efficiency and ease of use.
The Teardrop Magnetic Rod (also known as a pear-shaped or drop-shaped magnetic bar) features a teardrop-shaped cross-section and is constructed from a 304/316L stainless steel shell and a neodymium magnet core. It is especially suited for powders with low flow capacity or bridging tendencies. Its advantages include reduced material buildup and increased contact area, making it ideal for square or round hoppers and housing-type magnetic separators.
– Product Highlights
Square magnetic rods have a square cross-section and deliver strong magnetic force. They can be used individually or combined into magnetic grills. The outer tube is made of SUS304 or SUS316L stainless steel. Various sizes and specifications can be selected based on installation direction and material flow, making full use of the structural advantages of square edges.
– Working Principle
Square magnetic rods generate a strong magnetic field through their internal magnetic structure. This magnetic field attracts and captures ferrous impurities and weakly magnetic particles from materials, enabling effective separation of contaminants and improving material purity.
The physical separation process does not alter the properties of the material and meets the requirements of food-grade and medical-grade applications.
Features
Magnetic rods and bars for separation are available in a wide range of configurations to meet different industrial processing requirements, including round magnetic rods, square magnetic bars, and customized designs for specific equipment integration. They are typically manufactured by assembling sintered neodymium iron boron (NdFeB) magnets into a sealed stainless steel tube to form a high-intensity magnetic core.
The stainless steel tube thickness is typically 1.5–2.5 mm, with surface magnetic strength ranging from 6000 to 12000 Gauss and a protection rating up to IP65. These magnetic rods can effectively capture ferromagnetic impurities from powders, granules, and liquids. Optimized magnetic circuit design creates a strong gradient magnetic field, significantly improving iron removal efficiency.
Application Areas
Food Processing: Magnetic rods made with NdFeB magnets comply with food-grade material requirements and are widely used to remove metallic contaminants from flour, grains, and other bulk materials, preventing product contamination and protecting downstream equipment such as grinders and packaging systems.
Pharmaceutical Industry: These magnetic rods are used to remove fine ferromagnetic particles during powder processing, ensuring product purity and compliance with GMP standards.
Chemical Industry: Commonly applied in plastic granulation and rubber processing, magnetic rods help remove iron contaminants from raw materials, protecting injection molding equipment and improving product quality.
In addition, magnetic rods and bars are widely used in mining, new energy, and construction materials processing.
Technical parameters
Standard magnetic rods typically provide a surface magnetic strength of 8000–12000 Gauss, with a magnetic force decay rate of less than 5% per year. A 50 mm diameter rod can reach up to 12000 Gauss, depending on magnet grade, structure, and tube thickness. Higher intensity models can achieve up to 14000 Gauss for demanding separation applications.
In material processing systems, magnetic rods are often installed in magnetic grates or frames. Typical system capacity ranges from 1–10 tons per hour, depending on equipment design and material flow characteristics. The spacing between rods is generally designed at 1.2–1.5 times the rod diameter to ensure optimal material contact with the magnetic field.
Installation and Maintenance
Magnetic rods are typically sealed at both ends and can be customized with M8–M16 threaded holes or lifting rings, allowing flexible horizontal or vertical installation in separation systems.
During cleaning, non-ferrous tools should be used, and protective gloves are recommended to prevent injury caused by strong magnetic force. It is recommended to check magnetic strength every 6–12 months using a Gauss meter. If magnetic strength decreases by more than 15%, the magnetic core should be replaced to maintain optimal performance.
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