Filtering iron contamination out of high capacity coarse product streams
For filtering ferrous contaminants – such as iron and steel – out of granulates, fibres and coarser materials in high capacity non-pressurized pipelines.
Bullet magnets are used in the bulk, animal feed, plastics, ceramics and recycling industries, among others.
Construction & materials data
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Permanent bullet/pipe magnets are built with a large, cylindrical permanent magnet core, with a powerful, deeply penetrating magnetic field. The magnet core filters the metal particles out of the product flow and retains them on three magnetic poles until they are cleaned.
Summary of important specifications
- 1 bullet-shaped magnet with 60° top cone
- Magnet quality: ferrite GSFD-33, 7000 gauss on magnet surface
- Robust steel / stainless steel housing
- Incl./excl. welded tapered in-/outlet
- Flanges acc. DIN24154, or Jacob connections (only for tapered in-/outlet types)
- Finish: painted
- Dust explosion-proof Ex II 1/2D
Available accessories & options
Online accessories & spare parts
Click on a product variant to find the online available accessories & spare parts.
- Housing made of AISI316 stainless steel instead of 304
- Door sensor (open/closed safety)
- Upside-down versions for upwards ventilated product flows
- Magnet iron saturation signaller 'Met-alert Watch dog'
- Kobaflex PU protective coating
Filtering & discharging of ferrous contaminants
How does the magnetic filtering work?
Because the magnetic core is located in the middle of the product stream, the bullet magnet has a very high separation yield. The round shape of the housing and the magnetic core (with a 60° top cone) ensures continuous flow and good distribution of the product stream. The product then passes three powerful magnetic fields, where guide strips redirect any product near the outer walls back toward the magnetic core.
The magnets attract passing ferrous particles. The captured particles stick to 1 of the 3 magnet poles, while the purified product flows further.
How does the cleaning / iron discharging work?
You have to remove the captured ferrous particles manually. After having stopped the product flow, you can open the door. Then turn the magnet around its own axis, while wiping the magnet clean.
Cleaning / iron discharging sequence
- Stop the product flow.
- Loosen the fastener clamps.
- Put on sturdy work gloves.
- Open the door as far as possible.
- Wipe clean the magnet core while turning it around its axle.
Catch the removed ferrous particles and dicharge them.
- Re-tighten the fastener clamps.
- Restart the product flow.