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Magnetic separators filter and remove metal contamination from your product streams. They guarantee the product quality and prevent damage to machines.
Metal contaminants – also called foreign bodies – can enter your production line in all sorts of ways. Pieces of iron or steel in the raw material, staples, nails and screws from packaging, bolts and nuts that have vibrated loose, wear of the moving parts, rust or corrosion, etc. These foreign bodies can 'contaminate' your finished product, and they can also cause severe damage to your machinery. Rejection of batches is costly, but it can be even more costly if the contamination is not detected and removed, making it necessary to conduct a product recall. You will then be faced with enormous costs and damage to your reputation.
A magnetic separator filters (and later disposes of) or immediately removes the metal contaminants from the product stream. Magnetic separators result in practically no product loss and are suitable for removal of regularly occurring and larger quantities of metal contamination.
A metal detector is mainly used as a means of inspection for sporadically occurring metal contamination. A metal detector only detects. If you want the detected metal particle to be removed, you must also stop the production line or have a rejection mechanism eject the metal particle – resulting in the loss of a large quantity of product.
Contamination or foreign bodies in food products can lead to claims, very costly product recalls and reputational damage. And not just in food: even the smallest foreign bodies are undesirable in pharmaceutical, chemical or mineral bulk streams and lower the quality of the finished product.
By placing a magnetic separator before the inlet of your production machinery – such as grinders, ball mills, pin mills, calenders and crushers – you prevent damage to your machinery and production standstill. A magnetic separator very effectively filters metal contaminants from your bulk stream; they function continuously and provide a high level of operational reliability.
Fine dust in combination with oxygen and a source of ignition can result in dust explosions. By filtering metal particles out of the process in advance, magnets remove an important ignition source: the impact of metal on metal. This prevents serious injuries (or worse) and high costs from damage to your machines.
Many of our magnetic separators are suitable for use in ATEX zone 20/21. As a certified manufacturer of ATEX equipment, Goudsmit has an externally certified quality assurance system that guarantees the explosion safety of our magnetic separators.
We make use of three types of magnetic separators, each with its own specific characteristics and applications:
Within the large standard series of magnetic separators there are many available options. This way we are always able to find a suitable product for your metal problem. If we are nevertheless unable to find the right solution from among our standard products, our engineers are happy to develop a special custom solution.
For dust explosion risk areas we supply ATEX-certified magnetic separators.
We usually use very powerful neodymium magnets as standard in our separators. But in some cases separation with ferrite magnets, or a combination of neodymium and ferrite, can be an adequately strong, money-saving solution.
Neodymium magnets are currently the strongest magnets on the market. Furthermore, increasingly powerful versions of this material continue to become available, making it possible to filter ever smaller and weaker magnetic particles.
The downside of neodymium is that the standard versions can only withstand temperatures of up to 60 °C.
Ferrite magnets are around 10x less powerful than neodymium magnets but are less expensive and also suitable for high temperatures (up to around 200 °C).
For high-temperature applications where high magnetic holding power is also required you can opt for:
Whereas neodymium magnets lose strength as their high-temperature resistance increases, this is not the case for samarium-cobalt magnets; the magnets of this type that are resistant to the highest temperatures are also the most powerful. For this reason samarium-cobalt is always used for temperatures above 200 °C.
For applications in abrasive bulk steams, the magnets – and other parts if necessary – can be protected with a wear-resistant coating such as tungsten carbide or a hardening method such as hard inchromizing.
Yes. Magnetic filters and separators can be used for virtually all product streams, production systems and types of product transport:
Magnetic separators are used throughout the production chain, from raw material receiving to finished product processing. For example, they are placed in, after, alongside or above:
Magnetic separators are used in practically all imaginable types of product streams:
Our goal? To ensure that your finished product is 100% free of harmful metal contaminants.
All Goudsmit magnetic separators are designed primarily for optimal removal/filtering of metal contamination. Moreover, all our magnetic separators are simple to install and require little installation space due to their compact design.
Our expansive knowledge and many years of experience, impressive modern test centre and large selection of magnetic separators and options enable us to find the best solution for your metal contamination. We also have solutions available that are fully compliant with your industry-specific criteria, standards and certifications.
No. Not all metals can be magnetically attracted or repelled. Fortunately, most metal contaminants can be.
You can find more information about magnetism in our knowledge base.
Goudsmit Magnetics offers you a wealth of experience and knowledge concerning magnetic filtration and separation techniques. We analyse your product and use our experience and 2D/3D FEM calculations to propose the most suitable magnetic technique.
And if we are uncertain? Then we test the product in our test centre first to determine whether the intended result will be achieved.
Your questions, wishes and ideas, combined with our years of experience, have led to the development of a large range of magnetic filters and separators.
We can say with conviction that new developments, along with our years of experience, in combination with ever stronger magnetic material and better modelling software will make our magnetic filters and separators even more sophisticated and powerful in the future.
Magnetic bars are the building blocks of many magnetic systems and are used to filter product streams for the removal of very fine ferromagnetic and weakly magnetic particles (from machined stainless steel or iron oxides, for example).
Magnetic grids are placed at a pouring point or funnel. They provide an indication of whether ferrous contamination is present and have a control function. For free flowing powders and granulates.
Cleanflow magnets filter very fine ferromagnetic (and even weakly ferromagnetic) contamination out of powders and granulates in free-fall processes. Many types and options; continuous, automatic cleaning possible.
Magnetic filters capture very fine magnetic, and even weakly magnetic, ferrous contamination or powders in pressurised pipes. Many types and options; automatic cleaning possible.
Permanent and electromagnetic pipe magnets have one large magnetic core and are capable of high capacity filtering of ferromagnetic contamination from coarse raw materials. Automatic cleaning possible.
Magnetic plates can hang above a conveyor belt, be built-in against the wall of a product chute or against a sheet that the product flows over.
Chute magnets are used for powder streams in free-fall or chute applications; a simple solution for removal of ferromagnetic contamination.
External pole magnets filter ferromagnetic contamination from poorly flowing products. Large solids can also pass, because the passage is completely unobstructed. Continuous automatic cleaning possible.
Cascade magnets filter ferromagnetic contamination from coarse raw materials and permit optimal flow. The cascade arrangement forces the product to closely pass three plate magnets. Automatic cleaning possible.
Magnetic drum separators automatically and continuously separate large quantities of ferrous particles from granular products. Several new types of drum even separate weakly magnetic particles.
Magnetic brooms 'sweep up' iron particles from clean or rough floors or sandy surfaces; they are mainly used areas where iron is difficult or impossible to sweep up or is not visible, such as in sand.
Goudsmit Magnetics Group
5582 HA Waalre
+31 (0)40 2213 283