How to Choose & Use Magnetic Separators
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SB-95 Ask Orange > TM Provides solutionsto process problems How To > Complete guide toMagnetic Materials andSeparation Equipment > World authority in advancedtechnology for magnetic, vibratoryand metal detection applications. size="-3">

Page INTRODUCTION 1 1.MAGNET MATERIALS & STYLES 2 2.APPLICATION CONSIDERATIONS 4 3.TYPE OF MATERIAL BEING PROCESSED 4 4.SEPARATION EQUIPMENT - PLATE MAGNETS 5 5.SEPARATION EQUIPMENT - GRATE MAGNETS 7 6.SEPARATION EQUIPMENT - LIQUID LINE TRAP MAGNETS 7 7.SEPARATION EQUIPMENT - PNEUMATIC LINE RF MAGNETS 8 8.SEPARATION EQUIPMENT - SUSPENDED MAGNETS 8 9.SEPARATION EQUIPMENT - MAGNETIC PULLEYS AND DRUMS 11 10-.SEPARATION EQUIPMENT - HIGH INTENSITY MAGNETICS 11 11.SEPARATION EQUIPMENT FOR NONFERROUS METALS 12Ask Orange > TM is a collection of process solutioncase studies and how-to reference...

The use of magnets for removing ferrous contaminants in an industrialenvironment first began in the 1940s when Orange F. Merwin developed a flat magnetic product to help farmers trap and remove metal contaminants from their grain chutes. At the time, unwanted or trampӔ metal in the grain flow often created a spark that would ignite the explosive dust causing fires sometimes with catastrophic results. OrangeŒs early version of todays plate magnet was a huge success and led to the founding of Eriez Magnetics. After more than 60 years, Eriez remains the worldҒs authority in magnetic separation...

1. MAGNET MATERIALS & STYLES CERAMIC PERMANENT ALNICO During the 1960s, problems in South Africa drove up the price of Cobalt forcingmanufacturers to search for an Alnico substitute. It was then that manufacturersbegan using Ferrite ceramic pressings in their magnetic assemblies. Ceramicpressings are easy to work with because they can be cut in all directions, assembledinto a circuit and then charged as a complete unit. Ferrite pressings became thestandard in permanent magnetic separators until the early 1980s. Ceramic magnetcircuits work best when the goal is to remove relatively large...

RARE EARTH The term, Rare Earth, is a misnomer. A rare earth magnet derives its name notbecause it is rare, nor because it is earth. It is named Rare EarthӔ because part of its make-up is one of the Lanthanide elements of the Periodic Table between 57 and 71. There are 14 elements referred to as The Rare Earth Elements.Ӕ Samarium Cobalt was the first such material used in the early 1980s. The next material on the market was Neodymium Iron Boron, called Rare EarthӔ because Neodymium, like Samarium, is one of the Lanthanides. Today, Rare Earth magnetic circuits produce a magnet force more...

Did you know? Eriez was the maker of the Worlds Strongest SuspendedElectromagnet operating at China National Coal in Qingdao. This Superconducting Electromagnet produces 4000 gauss at 550mm(21.65 inches). ThatҒs nearly twice the strength of any similar magnet! See it at eriez.com, click: Press Room - 3/15/02 2. APPLICATION CONSIDERATIONS TEMPERATURE Permanent magnetic materials lose strength when exposed to elevatedtemperatures. Some losses are reversible in that when the temperature is returned tonormal, the magnetic strength returns. Permanent magnets heated beyond certaintemperatures...

DRY FREE-FLOWING, GRANULAR-TYPE PRODUCT If the material is small and free-flowing, a grate magnet may provide the bestopportunity for the ferrous contamination to contact a magnet directly. Grates can be cleaned best for vertical product flows, while plate magnets will work well if the material is cascading down a chute. These cleaning methods require that the product flow be stopped when removing collected iron from the magnet.Pneumatic flows of free-flowing product work best in a magnetic hump orRadial Field Cartridge. These products also require the suspension of product flow for...

Hump Magnets are similar to the Round Pipe Separatorsexcept Eriez provides the fabricated chute and two plate magnets instead of one. This extra plate effectively doubles the chances Round Pipe Separators (RPS) are actually platemagnets with a fabricated transition from a round pipe to the rectangular chute that contains the Plate Magnet. The RPS consists of an inlet transition to match the existing pipe or tubing, a neoprene deflector to deflect the product against the plate magnet then transitions back to the chute. The material flow must be stopped to clean the accumulated tramp metal...

5. SEPARATION EQUIPMENT - GRATE MAGNET DESIGNS Grate Magnets consist of one-inch diameter (25mm)magnetic tubes in a grid formation designed to allow feed material to cascade through the grate, effectively spreading magnetic protection through the cross sectioned area of a pipe, chute or hopper. CeramicMagnet models are effective in removing relatively largeferrous contamination such as nuts, bolts or staples.Rare Earth models will do a much better job on fineor weakly magnetic material such as rust or scale.There are a variety of grate magnet designsavailable for almost any application. The...

contamination, then a transition back to theexisting pipe. Ceramic Magnet models areeffective in removing chunky metallics like balingwire or staples. Eriez Rare Earth models will do amuch better job on fine or weakly magnetcontamination such as rust or scale from food,chemical and pharmaceutical products. See also Humps. 7. SEPARATION EQUIPMENT - PNEUMATIC LINE MAGNETS The Radial Field (RF) Cartridge Magnet is idealfor pneumatic flows of ingredients like starch, flour or any product typically conveyed with air from a rail car. The assembly is designed to match the existing pipe and is then...

Suspended magnets are used in a wide range of applications, hence the needfor an array of both permanent and electro magnetic designs. Some of Eriezstandard models include: SP6000 SERIES This line of Permanent Magnetic Separators employs ferrite magnets toremove tramp metal contamination from many light industrial applications. Themagnets are permanently charged so they require no external power source tofunction. Typical applications involve wood, tire chips or light aggregate recycling. SE7000 SERIES The SE7000 is Eriez most popular line ofround core electromagnets . They containround...