magnetic separate machine

magnetic separation technology for a recycling industry

magnetic separation technology for a recycling industry

Magnetic Separation is the process, in which the magnetically caused material is detached easily by using a magnetic force. From last many years, magnetic separators are used for various separation process in recycling industry like Glass recycling, Scrap material, Pet flakes, Plastic recycling, Rubber recycling, Municipal solid waste (MSW), e-waste recycling etc.

Magnetic Separator is the most trusted machine used to recover metal from the waste materials. It is known for the easy separation process to detach fine particles which have poor magnetic properties. Magnetic separator provides the excellent separating effect, as it uses dynamic magnetic system design. Recycling industries are using magnetic separator because of its various advantages like large handling capacity, low maintenance rate, simple structure and adjustable magnetic field intensity.

Eddy Current Separator is the most trusted separator, used to segregate valuable non-ferrous metals like aluminium, brass, copper, lead etc. It has an advantage of high frequency and high separation capability. Eddy Current Separator is robustly constructed with anti-vibration pads and its powerful quality of magnets provides the best and smooth separation for the recycling industry.

It has a capacity from 2MT/hr to 15MT/hr. Eddy Current provides its best separation service in various fields of recycling industry like plastic, rubber, glass, municipal solid waste, e-waste, pet etc. And the industries can take a huge advantage of using eddy current separator for their current application.

Overband Magnetic Separator is known for providing the excellent service of separating tramp iron from the material that is being processed on the conveyor belt or a vibratory feeder. Overband magnetic separator is used to protect machines like crushers, shredders by removing ferrous particles and it easily removes the heavy dust particles. It is used in many industries like food, sponge iron, charcoal, glass etc.

Specially designed Magnetic Head Pulley to detach tramp metals like steel, bucket teeth, bore crowns, bar scrap, chains, and tools. Recycling industries are using Magnetic Head Pulleys to segregate steel, municipal waste and many other ferrous contaminations like cans, nuts, nails etc.

From last many decades, Manufacturing industries are playing a most crucial role in our global economy. They are trying to develop high capacity and high-frequency pumps for the recycling industry, because theyre facing an issue of sorting recyclable material by removing various tramp metals like steel, bucket teeth, bore crowns etc.

Machines are not able to provide the best separation solution in the various field of recycling industry like plastic, rubber, glass, municipal solid waste, e-waste, pet etc. After facing these all issues regularly they are looking for high capacity which is having high-intensity magnets to remove impurities easily.

Jaykrishna magnetic Pvt. Ltd. understands all problems that the industries are facing now!!! We design a machine which is of high capacity that easily recovers metal from the waste materials. Our machines are evolved by using the latest technology that can be easily operated and to provide best separation results in various fields of the recycling industry.

We are famous for manufacturing and supplying magnetic separators which is of high capacity that easily provides the perfect separation solution. Jaykrishna Magnetic Pvt. Ltd. has 38+ years of experience in developing machines which are highly efficient and easy to handle.

Our magnetic separators are designed by the team of experts who have a great knowledge of designing and developing various types of magnetic separators and vibratory equipment. Our experts take care of clients need, before supplying any machine to them.

Our machines are installed in various fields of recycling industry like plastic, rubber, glass, municipal solid waste, e-waste, pet etc. We also design different types of magnetic separators like Eddy current separators, Overband Magnetic Separator and Magnetic Head Pulley as per the clients requirement to deliver them a best product.

If you are facing a problem of extracting tramp metals steel, bucket teeth, bore crowns etc. then feel free to contact us. Our team will get back to you with the best and effective solution that solves your problem.

Jaykrishna Magnetics Pvt. Ltd. is the leading manufacturer and exporter of Magnetic and Vibratory Equipments in India. We are established since 1978. The unique and premium structural design imparts quality and elegance to our products. Our focus is on continuously improving our process, service and products to exceed the benchmarks set by our competitors and offer better products to you.

magnetic separator - an overview | sciencedirect topics

magnetic separator - an overview | sciencedirect topics

As magnetic separators progress toward larger capacity, higher efficiency, and lower operating costs, some subeconomic iron ores have been utilized in recent years. For example, magnetite iron ore containing only about 4% Fe (beach sands or ancient beach sands) to 15% Fe (iron ore formations) and oxidized iron ore of only about 10% Fe (previously mine waste) to 20% Fe (oxidized iron ore formations) are reported to be utilized. They are first crushed and the coarse particles pretreated using roll magnetic separators. The magnetic product of roll magnetic separators may reach 2540% Fe and then is fed to mineral processing plants.

As shown in Figure5, slurry is fed from the top of an inclined screen in a low-intensity magnetic field, with the mesh size of screen sufficiently larger than those of particles in slurry. As the slurry flows down the above surface of screen, magnetic particles agglomerate with the size of agglomerations increasingly growing and roll down as magnetic concentrate at the lower end of screen. The less- or nonmagnetic particles pass through the screen as tailings. Figure5 shows the operation of screen magnetic separators for cleaning of magnetite.

Commercial magnetic separators are continuous-process machines, and separation is carried out on a moving stream of particles passing into and through the magnetic field. Close control of the speed of passage of the particles through the field is essential, which typically rules out free fall as a means of feeding. Belts or drums are very often used to transport the feed through the field.

As discussed in Section 13.4.1, flocculation of magnetic particles is a concern in magnetic separators, especially with dry separators processing fine material. If the ore can be fed through the field in a monolayer, this effect is much less serious, but, of course, the capacity of the machine is drastically reduced. Flocculation is often minimized by passing the material through consecutive magnetic fields, which are usually arranged with successive reversals of the polarity. This causes the particles to turn through 180, each reversal tending to free the entrained gangue particles. The main disadvantage of this method is that flux tends to leak from pole to pole, reducing the effective field intensity.

Provision for collection of the magnetic and nonmagnetic fractions must be incorporated into the design of the separator. Rather than allow the magnetics to contact the pole-pieces, which then requires their detachment, most separators are designed so that the magnetics are attracted to the pole-pieces, but come into contact with some form of conveying device, which carries them out of the influence of the field, into a bin or a belt. Nonmagnetic disposal presents no problems; free fall from a conveyor into a bin is often used. Middlings are readily produced by using a more intense field after the removal of the highly magnetic fraction.

Conventional magnetic separators are largely confined to the separation or filtration of relatively large particles of strongly magnetic materials. They employ a single surface for separation or collection of magnetic particles. A variety of transport mechanisms are employed to carry the feed past the magnet and separate the magnetic products. The active separation volume for each of these separators is approximately the product of the area of the magnetised surface and the extent of the magnetic field. In order for the separators to have practical throughputs, the magnetic field must extend several centimetres. Such an extent implies a relatively low magnetic field gradient and weak magnetic forces.

To overcome these disadvantages HGMS has been developed. Matrices of ferromagnetic material are used to produce much stronger but shorter range magnetic forces over large surface areas. When the matrices are placed in a magnetic field, strong magnetic forces are developed adjacent to the filaments of the matrix in approximately inverse proportion to their diameter. Since the extent of the magnetic field is approximately equal to the diameter of the filaments the magnetic fields are relatively short range. However, the magnetic field produced is intense and permits the separation and trapping of very fine, weakly magnetic particles (Oberteuffer, 1979).

The transport medium for HGMS can be either liquid or gaseous. Dry HGMS processing has the advantage of a dry product although classification of the pulverised coal is required to ensure proper separation. Small particles tend to agglomerate and pass through the separator. It has been shown that individual particles of coal in the discharge of a power plant pulveriser flow freely and hence separate well only if the material below about 10 m is removed (Eissenberg et al., 1979). Even then drying of that part of run of mine coal to be treated by HGMS may be required to ensure good flow characteristics.

A schematic representation of a batch HGMS process is shown in Figure 11.5 (Hise, 1979, 1980; Hise et al., 1979). It consists of a solenoid, the core cavity of which is filled with an expanded metal mesh. Crushed coal is fed to the top of the separator. Clean coal passes through while much of the inorganic material is trapped to be released when the solenoid is later deactivated.

Data from a batch HGMS process of one size fraction of one coal are plotted in Figure 11.6 as weight per cent of material trapped in the magnetic matrix, the product sulphur and the product ash versus the independent variable of superficial transport velocity. At low superficial transport velocities the amount of material removed from the coal is high partly due to mechanical entrapment. As the velocity is increased the importance of this factor diminishes but hydrodynamic forces on the particles increase. These hydrodynamic forces oppose the magnetic force and the amount of material removed from the coal decreases (Hise, 1979).

For comparison, Figure 11.7 shows data from a specific gravity separation of the same size fraction of the same coal. While the sulphur contents of the products from the two separation processes are similar the ash content of the HGMS product is considerably higher than that of the specific gravity product. It should be emphasised that this comparison was made for one size fraction of one coal.

More recently dry HGMS has been demonstrated at a scale of 1 t/h on carousel type equipment which processes coal continuously (Figure 11.8; Hise et al., 1981). A metal mesh passes continuously through the magnetised cavity so that the product coal passes through while the trapped inorganics are carried out of the field and released separately.

Wet HGMS is able to treat a much wider range of coal particle sizes than dry HGMS. The efficiency of separation increases with decreasing particle size. However, depending on the end use a considerable quantity of energy may have to be expended in drying the wet, fine coal product. Wet HGMS may find particular application to the precleaning of coal for use in preparing coal water mixtures for subsequent combustion as both pulverising the coal to a fine particle size and transporting the coal in a water slurry are operations common to both processes.

Work at Bruceton, PA, USA has compared the pyrite reduction potential of froth flotation followed by wet HGMS with that of a two stage froth flotation process (Hucko and Miller, 1980). Typical results are shown in Figures 11.9 and 11.10. The reduction in pyritic sulphur is similar in each case although a greater reduction in ash content is achieved by froth flotation followed by HGMS than by two stage froth flotation. However, Hucko (1979) concludes that it is highly unlikely that HGMS would be used for coal preparation independently of other beneficiation processes. As with froth flotation there is considerable variation in the amenability of various coals to magnetic beneficiation.

In the magnetic separator, material is passed through the field of an electromagnet which causes the retention or retardation of the magnetic constituent. It is important that the material should be supplied as a thin sheet in order that all the particles are subjected to a field of the same intensity and so that the free movement of individual particles is not impeded. The two main types of equipment are:

Eliminators, which are used for the removal of small quantities of magnetic material from the charge to a plant. These are frequently employed, for example, for the removal of stray pieces of scrap iron from the feed to crushing equipment. A common type of eliminator is a magnetic pulley incorporated in a belt conveyor so that the non-magnetic material is discharged in the normal manner and the magnetic material adheres to the belt and falls off from the underside.

Concentrators, which are used for the separation of magnetic ores from the accompanying mineral matter. These may operate with dry or wet feeds and an example of the latter is the Mastermag wet drum separator, the principle of operation of which is shown in Figure 1.43. An industrial machine is shown in operation in Figure 1.44. A slurry containing the magnetic component is fed between the rotating magnet drum cover and the casing. The stationary magnet system has several radial poles which attract the magnetic material to the drum face, and the rotating cover carries the magnetic material from one pole to another, at the same time gyrating the magnetic particles, allowing the non-magnetics to fall back into the slurry mainstream. The clean magnetic product is discharged clear of the slurry tailings. Operations can be co- or counter-current and the recovery of magnetic material can be as high as 99.5 per cent.

An example of a concentrator operating on a dry feed is a rotating disc separator. The material is fed continuously in a thin layer beneath a rotating magnetic disc which picks up the magnetic material in the zone of high magnetic intensity. The captured particles are carried by the disc to the discharge chutes where they are released. The nonmagnetic material is then passed to a second magnetic separation zone where secondary separation occurs in the same way, leaving a clean non-magnetic product to emerge from the discharge end of the machine. A Mastermagnet disc separator is shown in Figure 1.45.

The removal of small quantities of finely dispersed ferromagnetic materials from fine minerals, such as china clay, may be effectively carried out in a high gradient magnetic field. The suspension of mineral is passed through a matrix of ferromagnetic wires which is magnetised by the application of an external magnetic field. The removal of the weakly magnetic particles containing iron may considerably improve the brightness of the mineral, and thereby enhance its value as a coating or filler material for paper, or for use in the manufacture of high quality porcelain. In cases where the magnetic susceptibility of the contaminating component is too low, adsorption may first be carried out on to the surface of a material with the necessary magnetic properties. The magnetic field is generated in the gap between the poles of an electromagnet into which a loose matrix of fine stainless steel wire, usually of voidage of about 0.95, is inserted.

The attractive force on a particle is proportional to its magnetic susceptibility and to the product of the field strength and its gradient, and the fine wire matrix is used to minimise the distance between adjacent magnetised surfaces. The attractive forces which bind the particles must be sufficiently strong to ensure that the particles are not removed by the hydrodynamic drag exerted by the flowing suspension. As the deposit of separated particles builds up, the capture rate progressively diminishes and, at the appropriate stage, the particles are released by reducing the magnetic field strength to zero and flushing out with water. Commercial machines usually have two reciprocating canisters, in one of which particles are being collected from a stream of suspension, and in the other released into a waste stream. The dead time during which the canisters are being exchanged may be as short as 10 s.

Magnetic fields of very high intensity may be obtained by the use of superconducting magnets which operate most effectively at the temperature of liquid helium, and conservation of both gas and cold is therefore of paramount importance. The reciprocating canister system employed in the china clay industry is described by Svarovsky(30) and involves the use a single superconducting magnet and two canisters. At any time one is in the magnetic field while the other is withdrawn for cleaning. The whole system needs delicate magnetic balancing so that the two canisters can be moved without the use of very large forces and, for this to be the case, the amount of iron in the magnetic field must be maintained at a constant value throughout the transfer process. The superconducting magnet then remains at high field strength, thereby reducing the demand for liquid helium.

Micro-organisms can play an important role in the removal of certain heavy metal ions from effluent solutions. In the case of uranyl ions which are paramagnetic, the cells which have adsorbed the ions may be concentrated using a high gradient magnetic separation process. If the ions themselves are not magnetic, it may be possible to precipitate a magnetic deposit on the surfaces of the cells. Some micro-organisms incorporate a magnetic component in their cellular structure and are capable of taking up non-magnetic pollutants and are then themselves recoverable in a magnetic field. Such organisms are referred to a being magnetotactic.

where mpap is the inertial force and ap the acceleration of the particle. Fi are all the forces that may be present in a magnetic separator, such as the magnetic force, force of gravity, hydrodynamic drag, centrifugal force, the friction force, surface forces, magnetic dipolar forces, and electrostatic forces among the particles, and others.

Workable models of particle motion in a magnetic separator and material separation must be developed separately for individual types of magnetic separators. The situation is complicated by the fact that many branches of magnetic separation, such as separation by suspended magnets, magnetic pulleys, or wet low-intensity drum magnetic separators still constitute highly empirical technology. Hesitant steps have been taken to develop theoretical models of dry separation in roll and drum magnetic separators. Alternatively, open-gradient magnetic separation, magnetic flocculation of weakly magnetic particles, and wet high-gradient magnetic separation (HGMS) have received considerable theoretical attention. A notable number of papers dealing with the problem of particle capture in HGMS led to an understanding of the interaction between a particle and a matrix element. However, completely general treatment of the magnetostatic and hydrodynamic behavior of an assembly of the material particles in a system of matrix elements, in the presence of a strong magnetic field, is a theoretical problem of considerable complexity which has not been completed, yet. Detailed description of particle behavior in various magnetic separators can be found in monographs by Gerber and Birss (1983) and Svoboda (1987, 2004).

The brick material ratio was: Slag(1.0mm<): Grog (3.0mm<): Ceramic Gravel (1.0mm<): Clay (1.0mm<) at 20 : 35 : 25 : 20. To this mixture, 2% of pigment were added. Kneading and blending was done by a Mller mixer for 15 minutes. Molding was done by a 200 ton friction press, and the bricks were loaded onto the sintering truck.

This paper presents preliminary results using the Magnetic Micro-Particle Separator, (MM-PS, patent pending) which was conceived for high throughput isothermal and isobaric separation of nanometer (nm) sized iron catalyst particles from Fischer-Tropsch wax at 260 oC. Using magnetic fields up to 2,000 gauss, F-T wax with 0.30.5 wt% solids was produced from 25 wt% solids F-T slurries at product rates up to 230 kg/min/m2. The upper limit to the filtration rate is unknown at this time. The test flow sheet is given and preliminary results of a scale-up of 50:1 are presented.

Most loads for flap valves, conveyors, vibrating feeders, crushers, paddle feeders, magnetic separators, fans and trash screens generally are supplied at 415 V three-phase 50 Hz from the 415 V Coal Plant Switchboard, although 3.3 kV supplies may be used when the duty demands. Stacker/reclaimer machines are supplied at 3.3 kV. Electrical distribution is designed to safeguard the independent operational requirements of the duplicated coal plant facilities and to ensure that an electrical fault will not result in the total loss of coal supplies to the boilers.

The first step in any form of scrubbing unit is to break the lumpy materials and remove tramp elements by a magnetic separator. The product is then led into the scrubbing unit. The dry scrubbing principle is to agitate the sand grains in a stream of air so that the particles shot-blast each other. A complete dry scrubbing plant has been described in a previous book of this library in connection with sodium silicate bonded sands.* For clay-bonded sands the total AFS clay content in the reclaimed sand varies from 05% to 25% clay depending on the design of the plant.

magnetic separators / separation equipments manufacturer & supplier

magnetic separators / separation equipments manufacturer & supplier

Welcome to the world of Magnetic Solutions, we are the only complete magnetic solution in India. We engineer, design, manufacture and supply magnetic machinery for many different applications. We are committed to worldwide excellence with a complete range of machinery to support core markets which are the following: Steel Industries, Cement Industries, Recycling Industries, Material Handling Industries, Chemical Industries, Mineral Processing Industries, Mineral Processing, Food Processing and Ceramic Industries.

With a rock solid foundation, a formidable past, and a spirit charged with a vision of endless possibilities; Jaykrishna Magnetic Solution has positioned itself as an all-around performer. With more than 100 satisfied corporate clients all around the world, the company today is well entrenched in India and accelerates its success by consistently living up to its commitments.

Jaykrishna Magnetics Pvt. Ltd. has a history of product excellence and technology innovation providing the highest-quality and most reliable products and services to worldwide customers since 1978. We have set down for ourselves a set of objectives that have always guided us give a better performance.

We believe in developing world class products. While developing various products for our clients, we are committed to providemagnetics and vibratory equipments of the highest quality. We strictly follow our quality policy to give you an enhanced experience and thus achieve 100% customer satisfaction.

We strongly understand that to have a high-quality products,we need strong infrastructure and development process geared with the latest technology, so we have machines forMetal forming, Cutting, Welding, Casting, Sintering, Pressing, Extrusion, and Calendering.

Magnetic Separator Manufacturer|Magnet Manufacturer|Permanent Magnetic Equipment|All Type of Magnetic Equipment|Industrial Magnet |Magnetic Equipments Manufacturer|Permanent Magnetic Separator|Magnet Suppliers|Magnetic Separators|Magnetic Equipments|Magnet Manufacturer|Magnetic Destoner Manufacturer | Drum Type Magnetic Separator Manufacturer |Overband Magnetic Separator Manufacturer |Inline Drum Magnetic Separator Manufacturer |Permanent Magnetic Drum Pulley Manufacturer |Magnetic Coolant Separator Manufacturer |Trolly Mounted Suspension Magnet Manufacturer |Suspension Magnet |Channel Magnet Manufacturer |Plate Magnet Manufacturer |Magnetic Head Pulleys for Conveyor Systems Manufacturer |Hopper Magnet Manufacturer |Trap Magnet / Magnetic Filter Manufacturer |Hand Magnet |Hump Magnet |Half Hump Magnet Manufacturer |Auto Cleaning Hump Magnet Manufacturer |Drawer Magnet Manufacturer |Belt Type Magnetic Separator / Belt Concentrator Manufacturer |Deep Reach Separator |Magnetic Floor Sweeper Manufacturer |In-line Magnets Manufacturer |Grill Magnet Manufacturer |Rotary Magnet |Self Cleaning Magnetic Grill Manufacturer |Spout Magnet Manufacturer |Magnetic Rod Manufacturer |Wet Drum Magnetic Separator Manufacturer |Permanent Magnetic Lifters Manufacturer |Eddy Current Separator Manufacturer |Magnetic Combo SeparatorManufacturer |Magnetic Sorting Belt Manufacturer

Jaykrishna Magnetics Pvt. Ltd. is the leading manufacturer and exporter of Magnetic and Vibratory Equipments in India. We are established since 1978. The unique and premium structural design imparts quality and elegance to our products. Our focus is on continuously improving our process, service and products to exceed the benchmarks set by our competitors and offer better products to you.

Related Equipments