magnetic separation Articles

  • Separation

    Introduction: Ex situ separation can be performed by many processes. Gravity separation and sieving/physical separation are two well-developed processes that have long been primary methods for treating municipal wastewaters. Magnetic separation, on the other hand, is a much newer separation process that is still being tested. Gravity Separation Gravity ...

  • Magnetic Separation Myths 3 of 10 – The Highest Gauss Magnetic Separator is the Best!

    On a weekly and often daily basis, an enquiry will arrive in one of the Bunting team’s inboxes requesting a Magnetic Separator (eg a Cartridge or Tube Magnet) of a specific length and diameter.  It is only when the enquiry also states a specific gauss figure that the complications start. Firstly, ...


  • Magnetic Separation Myths 5 of 10 Magnetic Separators Lose Their Magnetic Strength Over Time

    It is a question that gets frequently asked: When will the Magnetic Separator start losing its magnetic strength? In a perfect world, a magnetic separator should not lose any magnetic strength. However, there are occasions when external factors will affect the magnetic strength and these include: The use of bonded Rare Earth Magnets. ...


  • Magnetic Separation Myths 2 of 10 – Are All Rare Earth Magnets the Same?

    A client has a metal contamination problem and needs to install the most suitable magnetic separation.  The metal is small and so they believe that a Rare Earth Magnet is what they need as this produces the strongest magnetic field.  So he picks up the phone and orders a Rare Earth Magnetic Separation and his problem is solved.  Or is it? Unfortunately, the term ‘Rare Earth ...


  • Magnetic Separation Myths 1 of 10 – Always Use the Strongest Magnet

    Strongest is always best, or is it? Commonly, companies will call and request a quote for the strongest magnet. But do they actually need a magnetic separator with the highest magnetic pulling power? The strongest magnetic fields are produced by superconductors and are used in industrial and medical applications.  However, their use in industry is very specific due to the high capital ...


  • A feasibility study of magnetic separation of magnetic nanoparticle for forward osmosis

    It was recently reported that a UK company has developed a naturally non-toxic magnetoferritin to act as a draw solute for drawing water in forward osmosis process. The gist of this technology is the utilization of the magnetic nanoparticle and high-gradient magnetic separation for draw solute separation and reuse. However, any demonstration on this technology has not been reported yet. In this ...


    By IWA Publishing

  • Sweed model 5703 XHD magnetic separator system

    Built for the most extreme linear scrap challenges Model 5703 XHD Chopper Put four cable-annihilating rotary knives on a beefy 600 lb flywheel that’s driven by up to 60 HP of raw power and you have a super heavy-duty rotary shear with a serious appetite. Sweed’s taken their popular 5703 rotary shear, originally introduced in the early 90’s, and ...


    By Sweed Machinery, Inc.

  • The Magnetic Duo

    (From Resource Recycling) The combination of high gradient magnetic separation using rare earth roll magnets and eddy current separation has proved to reliably remove aluminum flakes mixed with PET. Recycling of plastic beverage containers made from polyethylene terephthalate (PET) has been a growth industry for the past two decades. Recycled PET can be used in such diverse products as ...

  • The true value of magnetic separators and metal detectors in bulk handling

    Introduction The purpose of a bulk material handling may be to transport material from one of several locations to an ultimate destination or to process material such as ore in concentrating and smelting or handling materials for manufacturing. The handling of dry materials in loose bulk form involved the extensive use of static machinery such as belt conveyors, screw conveyors, and various ...


    By Eriez Magnetics Europe Ltd

  • Magnetic Separation Myths 4 of 10 – Magnets Can’t Attract Stainless Steel or Can They?

    The vast majority of stainless steel used in plants processing foodstuffs, chemicals, plastics and handling bulk materials whether in solid, liquid or powder form, is non-magnetic. Or is it? Traditionally, Magnetic Separators were installed to remove anything that was magnetically susceptible.  Today, this can even include magnetic plastic, used for gloves and even tools.  Magnetically ...


  • Application of magnetic separation technology for the recovery of colemanite from plant tailings

    In this study, colemanite was recovered from tailings produced by the Kestelek (Turkey) Processing Plant by magnetic separation. Magnetic susceptibility measurements revealed that colemanite is diamagnetic in character whereas gangue minerals are weakly paramagnetic, apparently due to the presence of the iron-bearing silicates such as smectite and, to a less extent, illite. Three-stage magnetic ...


    By SAGE Publications

  • Magnetic nanocarriers: from material design to magnetic manipulation

    Magnetic nanocarriers play an increasing role in various biomedical applications such as the separation of magnetically 'tagged' DNA, drug delivery or identification of biological species. Recent developments in nanotechnology allow the fabrication of both artificial nanocarriers and magnetic separation devices which may achieve great performances at an incredibly small-volume sample handling. ...


    By Inderscience Publishers

  • In the Works: Magnetic Plastics

    (from Recycling Today Magazine) Harnessing the power of magnetic currents has long been an effective way to separate and recover scrap metals. Now, researchers are looking at ways to use this same power to improve scrap plastic sorting methods. Scrap plastic comes in the form of production or processing scrap and from post-consumer streams. Production scrap can often be components or ...

  • Recycling plastics with magnets

    (from Machine Desgin)   Many plastics manufacturers use processes like sequential 3D blow-in molding and two-shot injection molding, but they create a ...


    By Eriez Magnetics Europe Ltd

  • Introduction to Ferrite Magnets

    Ferrite magnets are also referred to as ceramic or hard ferrite magnets. In the 1960s these magnets were developed to subsidize costly metallic magnets. Generally, they possess less energy compared to other magnets made of permanent materials. They are hard and relatively brittle. Since their creation, they have gradually won wide acceptance. This has been contributed by their excellent ...


    By Stanford Magnets

  • Facts About Ferrite Magnets

    Ferrite magnets are also referred to as ceramic or hard ferrite magnets. In the 1960s these magnets were developed to subsidize costly metallic magnets. Generally, they possess less energy compared to other magnets made of permanent materials. They are hard and relatively brittle. Since their creation, they have gradually won wide acceptance. This has been contributed by their excellent ...


    By Stanford Magnets

  • Master Magnets introduce the `R` type

    Eddy Current Separators are one of the most widely used types of magnetic separation equipment in the world today and are being increasingly used in various industrial applications for the separation of non-ferrous metals, such as aluminium and copper, from various types of product. Applications that often call for Eddy Current Separators include the separation of aluminium from crushed glass, ...


    By Master Magnets Ltd

  • Rare earth magnet minerals in China

    Recently in China, the ministry of industry and information released on its websites, ministry of industry and information, ministry of land and resources, National development and reform commission, etc, 6 ministries in total, jointly issued the notice concerning the special action of renovation towards the national rare earth magnet production. The action will last from August 1st to ...


    By Stanford Magnets

  • Magnets: A viable alternative to flotation for sand producers

    Introduction The basic rudiments of mineral beneficiation have not changed for many years. The techniques have been improved, but are still essentially the same, using either a materials weight, density, shape or magnetic susceptibility to enable separation. For removing impurities from non-metallic minerals, such as silica sand, typical methods include Flotation, Gravity and Magnetic ...


    By Eriez Magnetics Europe Ltd

  • Enhanced Coagulation Using a Magnetic Ion Exchange Resin

    The objective of this investigation was to examine the effectiveness of a magnetic ion exchange resin (IVIIEXR) provided by ORICA Australia Pty Ltd. of Victoria, Australia to enhance the coagulation of disinfection by-product (DBP) precursors. The IVIIE)C resin purportedly adsorbs natural organic material, thereby lowering the coagulant demand of the water, as well as lowering its DBP formation ...


    By IXOM Watercare

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