Magnetic Tube

What is a Magnetic Tube?

A Magnetic Tube is a powerful cylindrical magnetic separator used to capture and remove ferrous contaminants from materials during processing. These tubes consist of high-intensity rare earth magnets (typically Neodymium) encased in stainless steel, making them durable, corrosion-resistant, and safe for food, pharmaceutical, and industrial applications.

They are commonly installed in hoppers, chutes, or pipelines, either as standalone filters or as part of larger magnetic grates, drawers, or housing systems. Magnetic tubes play a crucial role in maintaining product purity and protecting machinery from metal damage.

Top Features of Magnetic Tube & Their Uses

Feature	Use/Benefit
High-Intensity Rare Earth Magnets	Efficiently attracts and holds fine ferrous particles
Stainless Steel (SS304/SS316) Housing	Corrosion-resistant and hygienic for food or pharma industries
Easy to Clean (Manual or Auto)	Simplifies routine maintenance and reduces downtime
Custom Sizes and Strengths	Tailored for various flow rates, pipe sizes, and applications
Strong Magnetic Field (up to 12,000+ Gauss)	Captures even minute iron particles like filings or fines
Surface Finish Options	Mirror or matte finishes for hygienic or industrial use
Welded or Sealed Ends	Prevents leakage or contamination in hygienic processing
Temperature Resistance	Handles working temperatures up to 80–350°C depending on magnet type
Non-Electric Operation	No power required, reducing operational cost
Compliance with Food-Grade Standards	Safe for use in FSSAI, FDA, and GMP-regulated environments

Top 10 FAQs on Magnetic Tubes

Q: What is a magnetic tube used for?
A: To remove ferrous contaminants like nails, bolts, filings, and iron powder from flowing material.
Q: In which industries are magnetic tubes used?
A: Food, pharmaceuticals, plastic, ceramics, chemical, minerals, and recycling industries.
Q: How strong is the magnetic force?
A: Magnetic tubes typically range from 6,000 to 12,000+ Gauss depending on application.
Q: Are magnetic tubes food safe?
A: Yes, when made from SS304/316 and sealed correctly, they are safe for food contact.
Q: How do I clean a magnetic tube?
A: Simply wipe it with a cloth or use a cleaning sleeve to remove collected metal particles.
Q: What is the difference between ceramic and rare-earth magnets in these tubes?
A: Rare-earth magnets offer stronger magnetic fields and better performance in fine metal capture.
Q: Can magnetic tubes withstand high temperatures?
A: Yes, depending on the magnet type—some models handle up to 350°C.
Q: Do magnetic tubes lose their strength over time?
A: Very slowly—rare-earth magnets typically retain strength for over 10–15 years.
Q: Can I install multiple tubes together?
A: Yes, they’re often assembled into grids, drawers, or filters for larger flow systems.
Q: Are they suitable for wet or slurry materials?
A: Yes, specific designs are available for use in wet or high-viscosity processing lines.

Applications of Magnetic Tube

Food Processing Industry
Ensures metal-free grains, spices, flour, or liquids in FSSAI/FDA-compliant facilities.
Pharmaceuticals
Maintains product purity during powder or tablet processing.
Chemical & Mineral Processing
Removes ferrous particles during material transfer in reactors or mixers.
Plastic & Polymer Plants
Captures metal before melting or extrusion stages.
Cement, Sand & Construction Material
Filters iron impurities in raw materials to protect crushers and mills.
Recycling Plants
Separates iron-based contaminants from shredded plastics, rubber, or e-waste.
Powder Coating & Paints
Prevents iron specks in the final coating or chemical mix.
Electronics & Battery Manufacturing
Maintains purity in sensitive circuits and lithium compounds.
Oil & Gas Processing
Prevents metal shavings or rust particles from entering pumps and pipelines.
Bulk Packaging Systems
Protects product quality and machines in filling and packaging lines.

Working Principle of Magnetic Tube

A magnetic tube attracts and holds ferrous particles from a material stream using its strong magnetic field. When installed inside a product stream (in hoppers or ducts), it acts as a passive filter. Ferrous particles stick to the surface of the tube, while the cleaned material continues to flow. Periodic cleaning of the tube restores its full capacity.

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