Magnetic rod- NdFeB pr.25 x 250 mm, 14.500 Gs, 95 N, 120 °C

The magnetic rod, designed exclusively for industrial use, for non-continuous operations (when cleaning the magnetic rod, the flow of the material to be cleaned must be stopped) ensures perfect cleaning (magnetic separation) of your mixtures from ferromagnetic impurities (by ferromagnetic impurities we mean fully magnetic metals such as iron, nickel, cobalt and alloys containing iron but not ferrous iron, paramagnetic particles and very finely magnetic materials - these materials need to be separated by other means). The magnetic rod is used for magnetic separation from dry, bulk and liquid materials.

For proper operation, the bulk mixtures to be purified (the material you pour over the magnetic bar) must have the following properties:

• Homogeneous
• Dry with good spreading properties, non-sticky to avoid sticking and adhering to the magnetic bar, see below for a description of suitable materials for magnetic bar separation.

If the conditions of use are different, the material properties do not match the description above and the magnetic particles are different from those described by us, do not use this magnetic bar and contact our technical and sales department to confirm the use of this magnetic bar or to identify another magnetic separator.

The magnetic bar is used as a pre-stage to protect the technology so that ferromagnetic impurities do not get into equipment that could be damaged, such as mill blades, crushers, regranulation and granulation line nozzles, injection molding nozzles, extrusion benches, press benches, wet presses, scrapping equipment, fine screens, ceramic press benches, glass presses, etc. It can also be used to purify the mixture to the highest possible purity (meaning the removal of ferromagnetic impurities), where the magnetic bar is placed at the end of the production process just before packaging, shipping, reloading, so that there is no more contamination during further operations in the production plant. In this case, it is expected that the material to be purified will be immediately enclosed in resealable containers or in other resealable containers. Due to the very high magnetic force, there is a high capture of ferromagnetic impurities (please read in detail below the description of what size of ferromagnetic impurities this magnetic bar captures).

The magnetic bar is primarily designed to create a magnetic grid according to the customer's needs. It has a thread on one side. Using this thread you can screw this rod to any flat steel or to any other auxiliary structure you design. No auxiliary structures or flat steel or brackets or fasteners are included in the delivery of the magnetic bar. Due to the very high magnetic force, please note the necessity to use non-magnetic steel for all materials from which your auxiliary structure or any bracket for attaching the magnetic rods will be made as well as the fasteners must be of non-magnetic design. The minimum distance between the rods when installed on your auxiliary structure, bracket, tape measure must not be less than 20 mm. This is for safety reasons during installation and also to prevent the rods from being pulled by magnetic force. Think also about the properties of the material (bulk and liquid) to maintain the required flow, seepage. If you design the auxiliary magnetic rod holders yourself, we cannot accept any responsibility for the correct function of the magnetic rods. If you are unsure of the installation or assembly to form a magnetic grid, do not purchase a magnetic rod and contact our sales and technical department. Please note the very high intensity of the magnetic force. Take extra care when designing and manufacturing your own assembly to place multiple magnetic bars side by side and especially when screwing (any assembly) into the assembly, separate the individual magnetic bars by a non-magnetic demarcation, e.g. a wooden board. There is an increased risk of injury by connecting the magnetic rods! Keep all magnetic materials, structures, tools such as hammers, pliers, vice grips at a minimum distance of 200 mm from the magnetic bars. Also pay attention to the work table, which must not be iron (ferromagnetic)!

You can also use the magnetic rod on its own by direct, free insertion into the material, both in dry and liquid material. It is resistant to moisture, so it can also be immersed (partially or completely) in liquids. Do not insert the magnetic rod and do not use it in aggressive substances and acids. The pH of the liquid in which you are placing the rod (where you will use the magnetic rod) must be between a minimum of 6.5 and a maximum of 8.5. If the liquid is of a different pH, do not use the magnetic rod. Please contact our technical sales department for more information, to confirm the suitability of the magnetic rod or to recommend the use of another product from our range.

The magnetic rod can also be used for magnetic separation from bulk mixtures (dry material). Loosely hang it, place it, place it in the location that you judge to be best for the function of this magnetic rod. You can also mount it anywhere with a screw. The screw is not included with the magnetic rod. Do not place or hang the rod where any ferromagnetic material is in close proximity or may be present and could cause the magnetic rod to become attached to this material. There is a risk of injury to the operator and poor function of the magnetic rod (when the magnetic rod is continuously acted upon by magnetic metal, its strength is reduced, e.g. if the magnetic rod were installed very close to a ferromagnetic beam or placed in an iron (magnetic) trough). The minimum distance of all magnetic objects from the magnetic bar is 200 mm. If you are unable to ensure that the magnetic rod is not in contact with magnetic objects (iron magnetic beams, hoppers, hoppers, troughs, chutes, various similar structures) do not use this magnetic rod. Please contact our technical sales department for more information, confirmation of the suitability of the magnetic rod or recommendation of another product.

The magnetic rod can therefore be used in a set of several magnetic rods or individually, either for liquids or for dry mixtures, as shown. Below are examples of materials for which you can use the magnetic rod to separate metallic magnetic impurities (magnetic separation).

Note: all liquid materials must meet the pH value requirements of 6.5 min. to 8.5 max., all dry, loose mixtures must meet the maximum material dimensions stated herein (0-3 mm diameter, 3x3x3 mm max. dimension) and magnetic metals must not exceed the dimensions stated herein (0-3 mm diameter, 3x3x3 mm max. dimension). In case your material has a larger grain size or you foresee the presence of larger magnetic impurities, do not use this magnetic bar and contact our sales and technical department to recommend a suitable product for your purposes.

Examples of materials that are suitable for magnetic separation using a magnetic rod :

• bulgur
• mashed potato powder
• potato gnocchi powder
• cereals, various types
• sugar crystal
• Sugar powder (in case of making your own set of multiple magnetic rods, please note the possibility of overwhelming the material, we recommend to spread it more slowly and evenly over the whole surface of the magnetic rod set, if using a separate magnetic rod there is no problem)
• chickpeas
• tea (dried and crushed not dried or fresh leaves)
• lens (in case of frequent use for large amounts of lens there is a risk of abrasion, please note the possible faster wear of the stainless steel casing)
• baby food
• crushed cocoa beans
• wood chips (very fine fraction, please note the poorer spreading properties)
• Crushed PET bottles (in case of making your own set of multiple magnetic rods, please note the possibility of material overload, we recommend to pour more slowly and spread evenly over the whole area of the magnetic rod set, in case of using a separate magnetic rod there is no problem)
• pumpkin seeds
• glaze in the ceramic industry
• rubber regranulate
• rubber crumb (in the case of making a custom assembly of multiple magnetic rods, it must not contain fine fibrous residue after crushing, similar to fine threads, in the case of using a separate magnetic rod there is no problem)
• cooling water (maximum temperature 40°C)
• cooling emulsions, oils (maximum temperature 40 °C)
• chilli seeds
• Buckwheat
• grout (watch out for arching if making your own set of multiple magnetic rods)
• yoghurts
• cocoa powder
• animal feeds (good bulk, similar in character to coarser flour up to more coarse fractions, if using a set of multiple magnetic rods we recommend a larger spacing between the rods, if using a single rod there is no problem)
• ceramic mass (liquid and loose...in case of loose, beware of abrasion, check more often the wear of the stainless steel cover)
• cocoa powder
• ground coffee
• raw coffee (beware of material abrasion at higher capacities)
• ketchups
• coconut flour
• baking powder
• curry sauce
• lavender oil
• gluten (beware of arching if making your own assembly of multiple magnetic rods)
• freeze-dried fruit
• poppy seeds (only poppy seeds not whole poppy seeds, not ground poppy seeds)
• peppermint oil
• matcha powder
• meat and bone meal
• ground corn (please note the increased abrasion of this material, magnetic rod can be used, but check the stainless steel casing more frequently for wear)
• flour (beware of material overload here, we recommend to pour more slowly and evenly, in case of using a set of multiple magnetic rods we recommend a larger spacing between the rods, in case of using a single rod there is no problem)
• Milk
• fruit juices
• oatmeal
• fruit mixes for yoghurt (rather separately placed in the material flow)
• plastic crumb (no glass impurity, must also not contain fine fibrous residues after crushing, similar to fine threads)
• plastic granulate and regranulate (without glass admixture)
• ash (not hot but cooled to the working temperature of the magnetic rod)
• Buckwheat
• soups (dried instant)
• purees
• sand (dry, fine sand, please note the increased abrasion of this material, magnetic rod can be used, but check the stainless steel casing for wear more often)
• Pudding (poorer spreading properties, spread slowly and, if making your own magnetic rod assembly, spread evenly over the whole area)
• different types of syrups
• rice (husked or unhusked, beware of abrasion)
• rapeseed oil
• sesame seeds
• sunflower seeds (note the possibility of increased abrasion and increased risk of penetration of the stainless steel casing, check its condition regularly)
• enamel or fibreglass (note the possibility of increased abrasion and increased risk of penetration of the stainless steel casing, check its condition regularly)
• building materials (only good flowable and non-abrasive, without glass and ceramic admixtures)
• Salt (please note possible reduced durability due to the material used, depending on frequency of use, contact manufacturer to confirm suitability)
• Soya
• building materials (only good flowable and non-abrasive, without glass and ceramic admixtures)
• dried chocolate
• whey powder
• dried herbs
• dried spices (finely ground or very finely crushed)
• milk powder
• desiccated coconut
• loose starches e.g. corn starch (spread slowly and evenly over the whole area, risk of arching, if using a set of multiple magnetic rods we recommend a larger spacing between the rods, if using a single rod there is no problem)
• sunflower oil
• soy sauce
• dried onion
• Tobacco
• tapioca pearls
• dough (powdered)
• pumpkin peeled seeds
• vanilla sugar
• liquid mixtures in general (by loosely placing the magnetic rod, observing the prescribed pH, maximum material temperature of 40 °C and particle size in the material)

Please note that the wall strength (casing) of the magnets, the stainless steel tube, is very small (very thin wall) due to achieving high magnetic induction (magnetic force) and breakaway force on its surface. Therefore, please also consider the height from which you will be spreading the material on the magnetic rod (impact height) in the case of using the magnetic rod on bulk material. In general, the impact height should not exceed 1 m. However, this is individual for each type of material. In the case of spreading from a high height, the stainless steel casing may be bent or punctured and the entire magnetic rod may be damaged. In case the height from which your material will be poured onto the magnetic bar is higher than 1 m, do not use this product and contact our sales and technical department to recommend another type of magnetic separator or to approve the use of this type of magnetic bar.

This magnetic rod picks up (separates) ferromagnetic particles from the size of 1 µm and smaller (characteristically metallic, immeasurable, magnetic dust) up to the size of 3 mm (3x3x3 mm), which is the maximum fraction (size) of material that can fall on the magnetic rod and that can be poured over the magnetic rod. For liquid mixtures, such a large material fraction is not expected, but in this case it is the maximum size of the metal ferromagnetic impurity. Larger objects must not fall on the magnetic rods (larger objects must not pass through the magnetic rods) than we specify (max. diameter 3 mm, 3x3x3 mm). In case you are concerned about the presence of larger metal ferromagnetic or other impurities, it is necessary to pre-set a sieve with a mesh size of max. 3 mm so that these larger, unwanted objects are already caught before contact with the magnetic rod. The sieve is not included in the delivery of the magnetic rod. Please also note that your material (both dry and liquid) may contain a very large amount of fine metallic impurities (very fine metallic magnetic dust), which can coat the magnetic rods and, in the case of an assembly of several magnetic rods side by side, make the assembly unusable. At the same time, the magnetic force is greatly reduced and this is also true for a magnetic bar used separately. In the case that the magnetic rods are immediately encased and "hide" in the iron dust, this is not a defect of the magnetic rod, but it is necessary to strengthen the magnetic separation with another magnetic rod or another type of magnetic separator. Similarly, more frequent cleaning of the magnetic rod may be sufficient.

If you are not able to ensure this (absence of larger particles in your material, very large amounts of metallic fine dust in your material), do not use this magnetic bar and contact our sales and technical department to recommend another type of magnetic separator or to approve the use of this type. 

The magnetic rods are designed to capture as much metallic magnetic debris as possible. However, it all depends on the amount of these magnetic impurities present in your material. It is not possible to guarantee the capture of all magnetic impurities. The specific technology and capacities must always be considered. If necessary, other types of magnetic separation should be retrofitted or added. Please do not rely solely on this one magnetic bar. If you need advice, please contact our magnetic separation experts at any time.

Do not use a magnetic rod to separate stainless steel (generally referred to as stainless steel), even if it appears to be magnetic (such are, for example, after passing through various crushers or other forms of deformation, as well as can be used to make various sieves). The magnetic rod is neither intended for the separation of non-magnetic non-ferrous metals nor for the separation of parts or components containing metals (e.g. plastic parts with metal residues pressed in, crushed windows with metal residues, wooden pellets with fine wires pressed in...). In case you need to separate such metal magnetic impurities, please contact our magnetic separation experts at any time, who will advise you which magnetic separator to use or which type to add to your separation set-up.

Please note that during cleaning of the magnetic rod, pressurised water can only be used from a maximum distance of 300 mm from the magnetic rod. The magnetic rod can be soaked and rinsed (with plain water only) during cleaning. Likewise, you can use a dry cloth for cleaning or well-dried pressurized air to blow off residual metallic dirt and separated material. Protective work equipment is required when wiping metal magnetic contaminants by hand. Use caution when cleaning multiple magnetic bar assemblies.

This magnetic rod is not intended for use in any environment that is classified as an explosive atmosphere (ATEX).

Do not use the magnetic rod for any other purpose than described above.

Magnetic induction measurement procedure

The measurements are made with a standard gaussmeter with a 0.75 mm probe at the location with the highest magnetic induction - the location of the pole extensions or the lowest point of the magnetic circuit arc. Repeat the test 3 times, always at a different point of the magnetic circuit, and calculate the average magnetic induction.

Procedure for measuring the breakaway force

Additional parameters