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A magnetic separator manufacturer reveals: Why is oil-cooled overband magnet suspension more suitable for harsh working conditions?
Release time :
Mar 10,2026
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We provide professional iron removal protection for large-scale mines, thermal power plants, and port conveyor systems. Our oil-cooled overband magnet suspension can be suspended above the conveyor belt to effectively remove detonator wires, iron parts, and other debris from the coal flow. It is suitable for harsh environments such as dust, humidity, and salt spray corrosion.
Hey everyone in the mining, cement, building materials, and power industries!
Those of us in this industry know that iron impurities on belt conveyors are practically "invisible killers." Whether it's manganese steel liners mixed in during mining, or iron chunks and screws ground off from crushers, if they get into the subsequent crushers and screening machines, they can cause anything from equipment stalls to complete failure. Repairs can cost anywhere from several thousand to tens of thousands of yuan, and the losses from production stoppages are incalculable.
Therefore, choosing a reliable magnetic separator is paramount. Today, let's talk about the RCDE type Oil-cooled overband magnet suspension (Oil-cooled suspended electromagnet overhead), which remains reliable even under harsh working conditions. What makes it different? Let me tell you.
one. Excellent Heat Dissipation for Longer Operation—Oil Circulation Cooling, Say Goodbye to Overheating
What's the biggest fear for ordinary dry electromagnetic separators? Overheating! When the coil overheats, the insulation ages easily, leading to coil burnout and rendering the entire magnetic separator unusable. This is especially problematic in summer or during continuous operation, as dry-type separators frequently break down, causing immense frustration.
Our RCDE type Oil-cooled overband magnet suspension is different. It employs an internal and external oil circulation cooling pipe design. You can think of it as having an "oil-cooled air conditioner" for the coil—transformer oil circulates in the pipes, quickly dissipating the heat generated by the coil and keeping the temperature within a reasonable range. Therefore, it can operate continuously for 24 hours a day, 365 days a year without interruption. Say goodbye to shutdowns and repairs caused by overheating.
two. Strong Magnetic Force for Thorough Iron Removal—Unique Winding Technology Creates a Deep and Strong Magnetic Field
Some magnetic separators, despite their large size, lack sufficient magnetic field strength. Even slightly thicker layers of material cannot attract the underlying iron pieces, which ultimately end up in the crusher.
The oil-cooled overband magnet suspension uses a unique technology in its coil winding, resulting in a significantly stronger magnetic field than similar products for the same power. Whether it's a large iron block or a small nail or iron filings, anything passing under the conveyor belt is attracted and held firmly. Moreover, the magnetic field penetrates deeply enough that even thick layers of material cannot escape its reach. Thorough attraction ensures the safety of subsequent equipment.
three. Fully Sealed, Unaffected by Any Environment – Dustproof, Rainproof, and Corrosion-Resistant, Suitable for Open-Air Construction Sites
Many of our on-site conditions are truly harsh: in open-pit mines, wind and rain bring dust everywhere; at docks, there's dampness and salt spray; in cement plants, dust reduces visibility to less than two meters. Ordinary iron separators quickly become rusty, or even short-circuit due to water ingress, rendering them unusable.
The oil-cooled suspended electromagnet overhead uses a fully sealed structure, making it dustproof, waterproof, and corrosion-resistant. Whether in torrential rain or in dusty explosion zones, it operates with unwavering stability. The robust and durable outer shell, coupled with an internal coil unaffected by external factors, naturally extends its lifespan.
four. Where is it best suited? Heavy-duty, continuous operation.
This oil-cooled suspended electromagnet overhead system is inherently designed for demanding tasks. For example:
- Scrap steel recycling in steel mills: The large and numerous iron components are too much for ordinary magnetic separators.
- Large sand and gravel aggregate production lines: Continuous operation without interruption; oil coolers are the perfect partner.
- Coal conveying systems in thermal power plants: Coal often contains iron pieces, which must be thoroughly removed to protect the coal mills.
- Cement plants and mines: Harsh environments require durable and long-lasting equipment.
A small case study for your reference: A cement plant customer previously used a certain brand of dry magnetic separator. In the summer, during the midday heat, it would frequently overheat and trigger the protection mechanism, causing the production line to shut down for two to three hours, leaving workers waiting helplessly. Later, they replaced it with our RCDE type Oil-cooled suspended electromagnet overhead system. More than two years have passed, and there haven't been any problems. Maintenance workers are much more relaxed now, no longer having to rush to repair things under the scorching sun. He said, "If I had known oil cooling was so worry-free, I should have just bought yours."
Finally, a few words: When choosing a magnetic separator, don't just focus on the price; consider long-term benefits. A magnetic separator that can work continuously, doesn't burn out the coil, and is unaffected by wind and rain will save you repair costs and downtime losses long before the price difference is recouped. Our Oil-cooled overband magnet suspension is designed for "worry-free and durable" performance.
If you are also struggling with magnetic separator problems, or want to upgrade your existing magnetic separator equipment, please feel free to contact us. We can recommend the most suitable Oil-cooled overband magnet suspension model based on your belt width, material thickness, and the size of the iron parts. Crucially, the quality is reliable, and the service is excellent.
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We provide professional iron removal protection for large-scale mines, thermal power plants, and port conveyor systems. Our oil-cooled overband magnet suspension can be suspended above the conveyor belt to effectively remove detonator wires, iron parts, and other debris from the coal flow. It is suitable for harsh environments such as dust, humidity, and salt spray corrosion.
Hengci's quick-opening grate liquid magnetic separator features a flip-top or clamp-type quick-opening design, allowing for rapid cleaning of ferrous impurities from the magnetic rod without tools. Made of 304/316L stainless steel, it boasts a hygienic design and complies with FDA/GMP standards. Suitable for food, beverage, and pharmaceutical production lines.
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