To split between two pages, click on the scissors icon on the left page. Separation efficiency of eddy current separation ecs is low about 85% in industrial application for recovering aluminum from crushed waste toner cartridges. The eddy current separator has the high speed magnetic rotor made of highpower neodymium ndfeb magnets. This is the basis of eddy current testing, by monitoring the voltage across the coil in such an arrangement we can detect changes in the material of interest. Ife wirbelstromscheider ife eddy current separators. The eddy current rotor is positioned at the discharge end of this conveyor. High yield and long life are the qualities that make. Wirbelstromscheider enos eddy current separator enos ife bulk.
The device makes use of eddy currents to effect the separation. Bm104x eccentric eddy current separator bakker magnetics. It purely separate aluminium, copper, brass and other nonferrous metals from your product stream, municipal solid waste recycling, scrap residue. They are composed of a conveyor belt system with a rapidly rotating magnetic rotor that creates an induction field by means of magnetic poles. Operation factors were researched by orthogonal experiment of ecs on investigating the separation distance between aluminum and plastic flakes. Magnets for aluminum include the eddy current separator. If the magnetic induction in a material changes with time, a voltage is generated in that material, and the induced voltage will produce a current, called an eddy current. The rotor shell is made of glass fibre reinforced epoxy resin. The working principle of an eddy current separating systems is based on the. Contents present the running process of eddy current separator, tables show the physical properties of aluminum flakes and eddy current separator, the comparison results of the new models to others, figures show the comprised materials of waste toner cartridges, sketch of the production line for recovering waste toner cartridges, definition of separation distance between aluminum and plastic. An eddy current separator respond to the problem of separating nonferrous metals from the remainder of refuse and depend on the ability of metals to conduct electrical current.
Magnets for aluminum include the eddy current separator which removes nonferrous materials from recycling streams. Bulletin 9000f1 1011 2 pulley eddy current separator maintenance and operating instructions check immediately when the eddy current separator is received for possible. Pdf the paper presents a new type of separator based on the action of the translational and magnus forces, which act upon the nonferrous. An eddy current separator uses a powerful eddy magnetic field to separate nonferrous metals from waste after all ferrous metals have been removed previously by.
Recycling and secondary recovery applications using an eddy. In these applications the metallic fraction consists of relatively large items such as various crushed automobile engine components or aluminum beverage cans resulting in excellent separation efficencies. As the eddycurrent drive efficiency drops rapidly at loads below 70%, energy savings are extremely sensitive to the load profile and duty. Pvc wastes are aspired and taken out in the process using fans because it is. Pdf eddycurrent separator with inclined magnetic disc. The key component of the eddy current separator is the magnetic rotor, which has a series of permanent rare earth magnets mounted on a support plate attached to a shaft. Pdf the paper presents a new type of eddycurrent separator designed for the particles separation from a mixture with dielectric particles or of the. Ife eddy current separators are used to separate nonferrous metals aluminium, copper, brass, etc. Nonferrous metal separator nes eddy current separator. Eddy current separation an overview sciencedirect topics. A schematic representation of eddy current separation is shown in figure 3.
Eddy current separation technique is used for separating metals from nonmetal component. Basically, a rotor comprised of magnet blocks, either standard ferrite ceramic or the more powerful rare earth magnets depending on an application, are spun at high revolutions to produce an eddy current. Eddy current separator type swp is intended for removal of nonferrous metals from bulk or crushed material fed to the separator. Approaches to improve separation efficiency of eddy.
Serious damage will occur if magnetic separators such as pulleys or drums are not used to remove the ferrous metal from the burden before it reaches the eddy current system. Recovery of nonferrous metals from electronic waste. Flake eddy current separator ecs buntings clean, lowprofile eddy current separator uses magnetic finite element design to optimize the magnetic field, and maximize the focal point and strength of the gauss intensity. Wirbelstromscheider vios eddy current separator vios. Bm12c bm36c s centric eddy current separators version 1.
The annual energy consumption of the existing system or eddycurrent baseline is calculated in table 2. Material is fed onto the conveyor belt of the eddy current separator, which moves it across the magnetic rotor where separation occurs fig. This is achieved by the use of a coil connected to an alternating current generator driving an alternating magnetic field primary field. The eddy currents are induced in conductive particles due to the timevarying magnetic field. The principle of the eddy current separator is fairly straightforward. Increase your productivity the unique design of the rotor produces strong eddy currents and repelling forces for maximum product separation. In this study, granule cable wastes were separated by eddy current separator ecs in a clear, low cost and efficient manner. Once the upload is complete, the pages of your document will be shown as thumbnails. Eddy current separator machine is used for separating nonferrous metals such as aluminum and copper. The eddy current separator xtreme ecs is furnished with a 14 diameter eddy current rotor, tail pulley, pillow block bearings, conveyor belt side guides, protective hood, and optional product discharge hoppers and splitter assemblies. Eddy current separators magnetic separator products.
In 1969, eriez magnetics patented both permanent magnetic and electromagnetic eddy current separators. This ensures high flexibility regarding the rotor system during all project phases. An eddy current separator uses a powerful magnetic field to separate nonferrous metals from waste after all ferrous metals have been removed previously by some arrangement of magnets. First, wiring or communication cables are shredded in conventional methods and are processed as mixed granules. Eddy current technique is an important electromagnetic non. Bmc centric eddy current separators bakker magnetics. Separation of granule nonferrous metals in shredded. It is not designed to be a source of magnetic ferrous separation.
Other applications will be described in chapter 7 on metal recycling. Thus, a complete solution for, je, and b requires us to solve eqns. Nonferrous metal separator nes eddy current separator nesp. The eddy current separator is applied to a conveyor belt carrying a thin layer of mixed waste. Eddy current separator type swp features magnetix poznanska 9, cierpice, pl 87103 torun 5, t. The socalled two successive steps eddycurrent separator tsecs consists of a horizontal rotary drum covered with permanent magnets, alternately ns and sn oriented.
As a metal particle passes through the alternating magnetic field, electrical eddy currents are induced throughout its volume and give rise to a distinct, repulsive force. Master magnets provides a first class rotor repair and refurbishment service, which can be carried out on rotors originally supplied by alternative manufacturers. Eddy current separator our highly efficient eddy current separator is the most advanced magnetic separators which are commonly used to separate nonferrous metals from mixed waste and other streams. The eddyfines is the top machine in the ecs eddy current separator line. Eddy current separator swp magnetix metal separators. Eddy current separator, granule nonferrous metal separation 1. A new wet eddycurrent separator article pdf available in resources conservation and recycling 371. While such a process extends well beyond the scope of this article, we can at. Today, these powerful systems feature improved permanent magnetic circuits with rare earth magnetic material for stronger eddy currents and improved separation of nonferrous materials.
Introduction valuable nonferrous metals in cable waste are gained by recycling. Eddy current separators with concentric and eccentric magnetic rotors start with the right eddy current separator and your separated materials will impress you. Eriez has designed a range of modular systems where customers can purchase one complete unit to separate ferrous and nonferrous metals. Separation of granule nonferrous metals in shredded cable. Eddy current separators eriez pdf catalogs technical. Pdf recovery of fine nonferrous metals from waste streams is a notoriously difficult problem in eddy current separation technology. This results in the maximum separation of the flake material. The housing has a splitter to divide the nonferrous metal from the nonmetallic material, such as paper, plastic, wood or. Depending on the application the eddy current separator type 0429 is available in open or closed dust proof variation. The two streams of material discharge into a housing. Rao nondestructive evaluation division metallurgy and materials group indira gandhi center for atomic research kalpakkam 603 102, tn, india email. Note that cracks must interrupt the surface eddy current flow to be detected. This type of magnet can remove nonferrous metals from mixed waste and other recycling product streams.
At the end of the conveyor belt is an eddy current rotor. The eddy current separator type 0429 nearly has identical dimensions like the eddy current type 0428 with concentric rotor systems. Star trace eddy current separation devices are an effective way of removing nonferrous metals from other products. The frame is of welded structural steel construction. Influencing factors of ecs were studied to improve the separation efficiency. This implies more changing j magnetic fields that must be accounted for in eqn. Eddy current separator systems when there is a requirement to separate nonferrous metals, there is usually a reciprocal need for ferrous metal separation. Eccentric nonferrous separator type bm104x sturdy construction modular design. Eddy current separation of nonferrous metals using a. Pdf eddy current separation of fine nonferrous particles from. High yields of separated nonferrous metals aluminium, copper, brass, etc. Is it costeffective to replace old eddycurrent drives.
The rotor is constructed using a highintensity rare earth neodymium ironboron magnet system which fits inside a nonmetallic rotor cover. A dashed line will appear to show where the splitting will take place. Bm104x eccentric eddy current separators version 1. The separation process takes place in two stages, first the strongly conducting particles are separated on the upper part of the drum. Eddy current separat ferrous metal separators providing unique recycling industry. Instead of mechanically rotating a fixed drum of permanent magnets. Eddy current separators a comprehensive list of companies involved in the manufacture and supply of eddy current separators.
Goudsmit excentric eddy current separator the eddy current separators manufactured by goudsmit have been used widely for decades. The rotation speed results in a rapidly fluctuating changing magnetic field. The eddy current method is based on the principle of generating circular electrical currents eddy currents in a conductive material. The eddy currents are indu ced in conductive particles due to the timevarying magnetic field. An eddy current separator is designed to remove nonferrous metals. Installation, operation and maintenance instructions. The high powered magnetic rotor is the heart of the eddy current separator and its maintenance and servicing is key to ensuring a long and troublefree service life. Eddy current separator separation manufacturer, supplier. As standard, the separation partition angle can be changed with a manual. The eddycurrent separator was initially developed to recover nonferrous metals from shredded automobile scrap or municipal solid waste. Today, eriez employs a range of separation technologies to efficiently recover. Eddy current separators are not designed to sort ferrous metals which become hot inside the eddy current field. Ife wirbelstromscheider ife eddy current separators ife bulk. Depending on the application, the rotor is provided with 12 20 26 magnetic poles.
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