Magnetic separator options

This means that there is almost always a suitable product for your metal issue. If you cannot find the right solution, our engineers can assist you.

1. Food/Pharma

• Magnetic filters that meet the strict European foodstuffs directive EC 1935/2004 and the EHEDG guidelines
• Magnetic filters suitable for Cleaning in Place (CIP)

2. Dust explosion-proof

For dust explosion risk areas: ATEX-certified magnetic separators.

3. Finish

• painting (only for products that are not made entirely of stainless steel)
• abrasive grit blasting – Ra 3 µm (standard - non-food/pharma finish)
• drum polishing / hand polishing – Ra ≤ 0.4 µm (standard food/pharma finish)
• electrolytic polishing - Ra ≤ 0.6 µm (less attractive, not always possible due to shape)
• wet blasting – Ra ≤ 0.6 µm (new – better resistance to powder adhesion than polishing)

4. Cleaning/removal of trapped metal particles

Bar and plate magnet systems

• manual cleaning: manually wiping off iron
• manual quick cleaning: with extractor, iron falls off after moving the extractor plate away from the magnet

Bar magnet systems

• easy cleaning = semi-automatic cleaning: manual action triggers automatic cleaning cycle
• automatic cleaning with production stop / filters with CIP cleaning
• automatic cleaning without production stop

Drum magnets and belt separators (mostly recycling & sorting)

• automatic, continuous cleaning without production stop

5. Magnet material choice: strength and temperature resistance

Most separators contain very powerful neodymium magnets. Sometimes separation with cheaper ferrite magnets - or a combination - is sufficient.

• Neodymium magnets are the strongest magnets on the market. This makes it possible to filter out small and weakly magnetic parts.
  The downside of neodymium is that the standard versions can only withstand temperatures of up to 60°C.
• Ferrite magnets are around 10x less strong than neodymium magnets, but cheaper and suitable for high temperatures (up to around 200°C).

For high temperatures and high magnetic holding power you can opt for:

• Temperature-resistant neodymium magnets: up to 250°C.
• Samarium cobalt magnets: up to 350°C.

6. Coating or hardening – for abrasive product streams

For abrasive bulk stream applications, the magnets and possibly other contact parts are given a wear-resistant finish. For industrial applications, this is often a tungsten carbide coating. Another option is hard inchromizing, also when a hygienic finish is desired.

7. Control

Most magnetic separators can be fitted with safety sensors to detect whether they are closed. If necessary, with a detection that checks whether the magnets are in the product channel when you start production. Automatic cleaning systems have simple controls. You can integrate these into your system so you can control the cleaning from your control room. Some systems have a PLC control so that they can be operated from the control room and directly from the machine.