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The hopper magnet separator is an essential magnetic filtering device designed to capture fine ferrous impurities from free-flowing powders and granules before they enter processing equipment. With its compact structure and easy installation, it effectively protects injection molding machines, extruders, and mixers from metal contamination, improving both product purity and equipment lifespan.
The hopper magnet separator is widely used in industries that require fine magnetic filtration, such as:
Plastic & Polymer Processing: Protects injection and extrusion equipment from ferrous metal damage.
Food Production: Ensures high product purity in sugar, flour, and spice production lines.
Chemical & Pharmaceutical Manufacturing: Maintains process stability and reduces contamination risks.
Recycling & Powder Coating Lines: Removes residual metallic dust for cleaner output.
The hopper magnet filter features multiple high-intensity magnetic rods made of strong neodymium rare earth magnets (NdFeB), enclosed in polished stainless steel for hygiene and corrosion resistance. The design ensures continuous, stable magnetic performance even under high-temperature environments.
Each magnetic bar typically offers a strength between 10,000 and 12,000 Gauss, ensuring efficient removal of iron filings, small screws, and other metal fragments from plastic granules, food powders, and chemical raw materials.
All design, safety, and testing procedures comply with relevant international guidelines and ASTM A342 / A342M – Standard Test Methods for Permeability of Weakly Magnetic Materials, ensuring verified magnetic reliability and consistency.
High Magnetic Intensity: NdFeB magnetic bars up to 14,000 GS ensure effective separation of even micro iron particles.
Modular Structure: Easy to install or remove for cleaning; available in square and round designs to fit various hoppers.
Durable Construction: Made from 304/316L stainless steel for long service life and resistance to wear and corrosion.
Customized Options: Adjustable magnetic strength, diameter, and number of bars according to material flow.
Hygienic Design: Smooth surface finish minimizes powder adhesion and simplifies maintenance.Built for Zero-Contamination: To ensure the highest sanitary standards, every Hopper Magnet Separator undergoes specialized stress-relief grinding. Learn more about Precision Manufacturing Standards and see why MagSpring is the preferred choice for sensitive industrial applications.
Magnetic strength: 25,00 – 12,000 Gauss
Material: SUS304 / SUS316L
Working temperature: up to 150 °C
Surface finish: mirror-polished for hygiene compliance
Custom dimensions and configurations available
Choosing our high-performance hopper magnet filter guarantees cost-effective protection, minimal downtime, and reliable contamination control. It is the perfect balance between durability, simplicity, and strong magnetic efficiency — making it a preferred choice for manufacturers who prioritize quality assurance and smooth production.
Q1: How often should I clean the hopper magnet separator?
A: Cleaning frequency depends on contamination level. In high-dust environments, inspect and clean daily for best performance.
Q2: Can it handle high-viscosity or moist powders?
A: Yes, optional Teflon coating or waterproof design is available for sticky or wet materials.
Q3: Is customization available for specific hopper sizes?
A: Absolutely. We design customized magnetic grids to match your equipment dimensions and processing needs.
For inquiries or custom solutions, contact Mag Spring® at act@mag-spring.com. Our engineering team will help you design the optimal magnetic separation setup for your application.
