Operation factors were researched by orthogonal experiment of ecs on investigating the separation distance between aluminum and plastic flakes. Approaches to improve separation efficiency of eddy. A new wet eddycurrent separator article pdf available in resources conservation and recycling 371. The annual energy consumption of the existing system or eddycurrent baseline is calculated in table 2. As standard, the separation partition angle can be changed with a manual. Separation efficiency of eddy current separation ecs is low about 85% in industrial application for recovering aluminum from crushed waste toner cartridges. The working principle of an eddy current separating systems is based on the. Master magnets provides a first class rotor repair and refurbishment service, which can be carried out on rotors originally supplied by alternative manufacturers.
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. Nonferrous metal separator nes eddy current separator. In 1969, eriez magnetics patented both permanent magnetic and electromagnetic eddy current separators. The separation process takes place in two stages, first the strongly conducting particles are separated on the upper part of the drum. Bulletin 9000f1 1011 2 pulley eddy current separator maintenance and operating instructions check immediately when the eddy current separator is received for possible. Eddy current separator machine is used for separating nonferrous metals such as aluminum and copper. 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.
It purely separate aluminium, copper, brass and other nonferrous metals from your product stream, municipal solid waste recycling, scrap residue. 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. This results in the maximum separation of the flake material. Other applications will be described in chapter 7 on metal recycling. The frame is of welded structural steel construction. 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. Today, these powerful systems feature improved permanent magnetic circuits with rare earth magnetic material for stronger eddy currents and improved separation of nonferrous materials. A schematic representation of eddy current separation is shown in figure 3. Thus, a complete solution for, je, and b requires us to solve eqns. This ensures high flexibility regarding the rotor system during all project phases. Once the upload is complete, the pages of your document will be shown as thumbnails. Eddy current separator, granule nonferrous metal separation 1. Eddy current separator separation manufacturer, supplier.
Ife wirbelstromscheider ife eddy current separators. They are composed of a conveyor belt system with a rapidly rotating magnetic rotor that creates an induction field by means of magnetic poles. Separation of granule nonferrous metals in shredded. It is not designed to be a source of magnetic ferrous separation. The eddyfines is the top machine in the ecs eddy current separator line. Bm104x eccentric eddy current separator bakker magnetics. Eddy current separator systems when there is a requirement to separate nonferrous metals, there is usually a reciprocal need for ferrous metal separation. An eddy current separator is designed to remove nonferrous metals. A dashed line will appear to show where the splitting will take place. Material is fed onto the conveyor belt of the eddy current separator, which moves it across the magnetic rotor where separation occurs fig. 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. The socalled two successive steps eddycurrent separator tsecs consists of a horizontal rotary drum covered with permanent magnets, alternately ns and sn oriented. Note that cracks must interrupt the surface eddy current flow to be detected. The eddy current separator has the high speed magnetic rotor made of highpower neodymium ndfeb magnets.
Eddy current separator type swp is intended for removal of nonferrous metals from bulk or crushed material fed to the separator. Separation of granule nonferrous metals in shredded cable. Depending on the application the eddy current separator type 0429 is available in open or closed dust proof variation. 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. First, wiring or communication cables are shredded in conventional methods and are processed as mixed granules. 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. In this study, granule cable wastes were separated by eddy current separator ecs in a clear, low cost and efficient manner. Depending on the application, the rotor is provided with 12 20 26 magnetic poles. Eddy current separators with concentric and eccentric magnetic rotors start with the right eddy current separator and your separated materials will impress you. The eddy current separator type 0429 nearly has identical dimensions like the eddy current type 0428 with concentric rotor systems. Eddy current separation an overview sciencedirect topics. Eddy current separation of nonferrous metals using a. Eddy current separators are not designed to sort ferrous metals which become hot inside the eddy current field. Pdf the paper presents a new type of separator based on the action of the translational and magnus forces, which act upon the nonferrous.
Pdf eddycurrent separator with inclined magnetic disc. The eddy currents are indu ced in conductive particles due to the timevarying magnetic field. The eddy current rotor is positioned at the discharge end of this conveyor. At the end of the conveyor belt is an eddy current rotor.
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. Ife wirbelstromscheider ife eddy current separators ife bulk. Magnets for aluminum include the eddy current separator. While such a process extends well beyond the scope of this article, we can at. The eddy currents are induced in conductive particles due to the timevarying magnetic field. Recovery of nonferrous metals from electronic waste. Pdf the paper presents a new type of eddycurrent separator designed for the particles separation from a mixture with dielectric particles or of the. To split between two pages, click on the scissors icon on the left page. The rotation speed results in a rapidly fluctuating changing magnetic field. Eddy current separators magnetic separator products.
This is achieved by the use of a coil connected to an alternating current generator driving an alternating magnetic field primary field. Eddy current separat ferrous metal separators providing unique recycling industry. 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. 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. The eddy current separator is applied to a conveyor belt carrying a thin layer of mixed waste. The eddy current method is based on the principle of generating circular electrical currents eddy currents in a conductive material. Increase your productivity the unique design of the rotor produces strong eddy currents and repelling forces for maximum product separation. Magnets for aluminum include the eddy current separator which removes nonferrous materials from recycling streams. The device makes use of eddy currents to effect the separation. Rao nondestructive evaluation division metallurgy and materials group indira gandhi center for atomic research kalpakkam 603 102, tn, india email. The rotor is constructed using a highintensity rare earth neodymium ironboron magnet system which fits inside a nonmetallic rotor cover. This type of magnet can remove nonferrous metals from mixed waste and other recycling product streams. Is it costeffective to replace old eddycurrent drives.
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. Bm104x eccentric eddy current separators version 1. 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. Introduction valuable nonferrous metals in cable waste are gained by recycling. Wirbelstromscheider vios eddy current separator vios. Star trace eddy current separation devices are an effective way of removing nonferrous metals from other products. Bmc centric eddy current separators bakker magnetics. Recycling and secondary recovery applications using an eddy. Wirbelstromscheider enos eddy current separator enos ife bulk. Eriez has designed a range of modular systems where customers can purchase one complete unit to separate ferrous and nonferrous metals. The housing has a splitter to divide the nonferrous metal from the nonmetallic material, such as paper, plastic, wood or.
Bm12c bm36c s centric eddy current separators version 1. Influencing factors of ecs were studied to improve the separation efficiency. Pdf recovery of fine nonferrous metals from waste streams is a notoriously difficult problem in eddy current separation technology. Today, eriez employs a range of separation technologies to efficiently recover. 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 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. Eddy current separators a comprehensive list of companies involved in the manufacture and supply of eddy current separators.
Nonferrous metal separator nes eddy current separator nesp. Eddy current separator swp magnetix metal separators. High yield and long life are the qualities that make. Goudsmit excentric eddy current separator the eddy current separators manufactured by goudsmit have been used widely for decades. 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.
The rotor shell is made of glass fibre reinforced epoxy resin. Eddy current technique is an important electromagnetic non. This implies more changing j magnetic fields that must be accounted for in eqn. The two streams of material discharge into a housing. Eddy current separator type swp features magnetix poznanska 9, cierpice, pl 87103 torun 5, t. 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. Instead of mechanically rotating a fixed drum of permanent magnets. High yields of separated nonferrous metals aluminium, copper, brass, etc. Ife eddy current separators are used to separate nonferrous metals aluminium, copper, brass, etc. Eccentric nonferrous separator type bm104x sturdy construction modular design. Pdf eddy current separation of fine nonferrous particles from. Installation, operation and maintenance instructions. The eddycurrent separator was initially developed to recover nonferrous metals from shredded automobile scrap or municipal solid waste.
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