Abstract: An apparatus and method for immunomagnetic separation and concentration of target biological materials is disclosed. The immunomagnetic separation is performed by a magnetic flow cell, or filter block, as part of an automated mostly continuous immunomagnetic assay system. The magnetic flow cell has two bundles of ferromagnetic rods or pins positioned inside an internal chamber so that a fluid sample flowing through the flow cell passes through the pins. A pair of cobalt magnets flank the flow cell so that the pins concentrate and sufficiently increase the magnetic fields so that even nanometer size magnetic beads can be captured. The overall system combines a reaction subsystem for reacting coated magnetic beads with a sample, a collection subsystem for capturing magnetic beads, a rinsing subsystem for removing debris and a filtering subsystem for removing captured magnetic beads from the collection subsystem. The new magnetic flow filter is the key component for the collection and filtering subsystems.

Abstract: The invention describes a process and an appliance for separating non-magnetic materials and objects with the use of magnetic fluids. With this invention a restoration of the magnetic fluid adhering to the separated material is made possible, by removing the magnetic liquid still adhering to the separated product both through magnets as well as through water. The magnetic fluid in the separating chambers is constantly monitored as regards volume and concentration via a monitoring installation. An appropriate area of use for the invention is the separation of fragmented materials, the separation of capacitors in capacitators containing polychlorinated biphenylenes (PCB) and PCB-free capacitors. The invention described, moreover, the composition, manufacture and use of environment-friendly diluted magneto-fluids, which can be especially suitable in employment in the separation of non-magnetic materials using the sink-float process in the magnetic field gradient.

Abstract: A method for separating a powder into a superconducting fraction and a tailing fraction, or of separating a powder into a magnetically active fraction and a tailing fraction. The powder is mixed with a paramagnetic liquid to form a slurry. The slurry is poured down an incline while being subjected to a downslope-traveling magnetic field. The superconducting or magnetically active particles move upslope.

Abstract: A magnetic separator for separating magnetisable particles from a slurry is described. The separator includes means for establishing a magnetic field (10) in a separation zone. At least one separation chamber (12) with an inlet and outlet containing a fluid permeable magnetizable separating packing material, and, at least one compensating chamber (4) containing a magnetizable compensating packing, are linked and are movable such that movement of the separation chamber or chambers into the separation zone results in movement of the compensating chamber or chambers out of the separation zone and vice-versa. The magnetization characteristics and/or the demagnetization factors of the separating and compensating packings are substantially the same.

Abstract: A magnetic ore purification system for enriching magnetic ore concentration in a feed material. The system includes an elutriator, an alternating current magnet, and an ultrasonic separator. The elutriator has a feed port for introducing the feed material into the elutriator and an enriched material port for collecting an enriched material having a magnetic ore concentration that is greater than the feed material. The alternating current magnet generates a uniform low strength magnetic field within the elutriator. The ultrasonic transducer introduces ultrasonic energy into the elutriator.

Abstract: A mobile apparatus and process for the separation and recovery of abrasive grit material from blasting material containing waste material and contaminants. The mobile apparatus has a low profile which facilitates the movement of the apparatus to job sites. At the job site the blasting material is collected by the mobile apparatus through a flexible hose connected to a chamber which is under sub atmospheric pressure. A vacuum generator that reduces the pressure in the chamber has sufficient power to allow vacuum collection of the blasting material through the flexible hose when material flow might otherwise clog the hose. The abrasive grit material is removed from the blasting material by self-contained, multi-step separation process situated within the chamber. The mobile apparatus utilizes an initial physical separator, a rotary screen separator, a magnetic separator, and an air wash separation device that are interconnected by a rotary lift wheel.

Abstract: A fully integrated micromachined magnetic particle manipulator and separator which can be used to influence magnetic particles suspended in a fluid. The magnetic particle manipulator and separator is integrated on a substrate, preferably a silicon wafer. The magnetic particle manipulator and separator is comprised of a fluid flow channel and integrated inductive components formed on each side of the channel. Each inductive component is comprised of a magnetic core and a conductor coil. Preferably, a meander-type inductor is used. The magnetic cores have ends located adjacent the fluid channel which function as electromagnet poles. When approximately 500 mA of DC current at less than 1 volt is supplied to the circuit, the inductive components produce magnetic fields and the magnetic particles suspended in the fluid clump onto the electromagnet poles. When the current is removed, the magnetic particles are released from the electromagnet poles.

Abstract: A method and apparatus for automated separation of fluid borne magnetically responsive spheres into different populations by carefully manipulating forces of gravity, buoyancy, fluid friction, and magnetism. Distinct homogeneous sphere populations are separated from a non-homogeneous population including a plurality of intermixed homogeneous sphere populations, without significant manual processing, by: effecting magnetic distancing of an initial non-homogeneous sphere population; facilitating enhanced separation of the non-homogeneous population in accordance with rate of descent of spheres within homogeneous populations; providing magnetic acceleration of the separation process; and effecting magnetic concentration of the separated homogeneous sphere populations. The process and apparatus provide for improved bio-sensing resulting from the automated condensing of homogeneous groups of spheres from a non-homogeneous sphere population.

Abstract: Magnetic separations are made by feeding material to a magnetic separator having elongated ferromagnetic bodies that are disposed parallel to each other with spaces therebetween, the bodies being disposed at an angle to the magnetic field direction. The magnetic particles are deflected away, while the nonmagnetic particles pass through the spaces between the ferromagnetic bodies. In one embodiment, the separator includes a magnetic circuit including an array of elongated ferromagnetic bodies, parallel to each other with spaces therebetween, and on the same side of a common tangential plane that is positioned substantially perpendicular to the direction of the field created by the magnetic system and at an acute angle to the direction of particle feed towards the ferromagnetic bodies.

Abstract: A magnetic separator (2) for separating magnetic particles from a passing slurry material comprises a canister (22) having a paramagnetic matrix element (24) disposed therein. Inlet and outlet manifold assemblies (30, 32) are disposed on either side of the canister for directing the slurry through the matrix element. Diffusers (60), positioned between the inlet and outlet manifold assemblies and the matrix element, comprise a hollow conical body (62) with a narrow inlet (64) facing the inlet manifold and an enlarged outlet (66) facing the matrix element. The diffusers define inner and outer flow passages for the slurry so as to distribute the slurry over a large portion of the paramagnetic matrix element, thereby avoiding localized saturation of the matrix element and increasing the on line time of the apparatus.

Abstract: An apparatus for magnetic cell separation using paramagnetic microbeads includes a base upon which is movably carried a rocker member. The rocker member carries both a primary processing container in which a mixture of liquid with cells and paramagnetic microbeads is received; and a primary magnet movable from a first position adjacent to the primary container to magnetically capture the microbeads, and a second position spaced from the primary container to magnetically release the microbeads. The mixture of liquid with cells and microbeads is agitated by tilting motions of the rocker assembly, thereby achieving the binding of target cells to microbeads. The paramagnetic microbeads, with bound target cells, are captured and released by movements of the primary magnet between its first and second positions. A secondary magnet is placed downstream from the primary magnet to capture any paramagnetic microbeads which might escape from the primary magnet.

Abstract: Particles contained in a suspension are separated in accordance with their magnetic susceptibility and based on the variation in flow velocity of suspension. In order to achieve this magnetic separation, a pair of wall plates having at least one flat surface in which a plurality of ferromagnetic narrow wires are buried in parallel are positioned in parallel to each other with a small distance therebetween so that the flat surfaces are opposed to each other to form a channel. The suspension flows in a laminar state with different flow velocities through the channel in the longitudinal direction of the ferromagnetic wires. A magnetic field is externally applied to the channel in the direction perpendicular both to the flow direction and the wall plates. Particles are separated in accordance with their magnetic susceptibility and based on variation in flow velocity which interacts with the magnetic susceptibility.

Abstract: A magnetic separator made up of a drum bearing a plurality of stacked spaced rings each having a U-shaped cross section in the form of an arc outwardly facing channels. An upper set of magnets and a lower set of magnets supported on the separator frame and extending into the channels and matrix module are supported on the rings in spaces between the rings. A mixture of magnetic and non-magnetic material is fed onto the matrix modules and first upper nozzles spray water on the matrix modules as the matrix modules pass between the upper magnets thereby flushing non-magnetic material. The second upper nozzles spray water on the matrix modules as the modules move away from the upper magnets so that magnetic material is flushed from the matrix modules and falls into the non-magnetic hopper.

Abstract: A method which pertains to the separation of pulp which contains magnetic constituents in a wet-magnetic, low-intensity separator of the concurrent type, in which a cylindrical, horizontally mounted rotatable drum coacts with non-rotating magnets disposed in the drum in a manner to convey magnetic constituents in contact with the drum surface to an outlet for magnetic concentrate, and in which method pulp which is depleted of magnetic constituents is separated as waste at a region remote from the concentrate outlet in a direction opposite to the direction in which the drum rotates. Additionally, pulp is delivered to the separator so as to bring the pulp into contact with the drum at or close to the highest level of the drum; water is delivered to the separator in the vicinity of the concentrate outlet such that water will flow in contact with the pulp constituents that accompany drum rotation; and water is removed from the drum together with the waste. A wet-magnetic separator is also set forth.

Abstract: In a process for separating relatively magnetic mineral particles P.sub.m having magnetic susceptibilities .chi..sub.m, with .chi..sub.m >0 from relatively non-magnetic particles P.sub.n, having magnetic susceptibilities .chi..sub.n, with .chi..sub.m >.chi..sub.n, all the particles are suspended in a liquid stream, which is supplied to a separating container. The container is provided with an inlet and an outlet and forms a passageway for the stream therebetween. Furthermore an arrangement of magnetizable matrix elements provided in the passageway is magnetized. The supplying and magnetizing are conditioned in such a way, that depositions of particles are obtained predominantly upon the downstream side of the elements. From all the particles magnetic particles P.sub.m are captured to an effective amount upon the downstream side, thereby resulting in a high grade deposition.

Abstract: A method for processing wastes from the machining of ferromagnetic materials in which the wastes are mixed with a washing solution in a first tank and oil or oil-and-water emulsion adhering to the wastes is dissolved. Ferromagnetic components of the wastes are then separated from the washing solution in the first tank by means of a magnetic field, and non-magnetic components are then subjected to a washing in a following second tank. The ferromagnetic components are fed to an additional tank where they are washed again. The separated and degreased components are then filtered out of the washing liquids using suitable filtering apparatus.

Abstract: A method for beneficiating a kaolin clay which includes quantities of smectite contaminants to reduce the low and high shear viscosities of high solids aqueous slurries of the kaolin. The smectite is converted into a pillared clay by intercalating it with a polymeric cationic hydroxy metal complex wherein the metal is ferromagnetic or diamagnetic. The kaolin and pillared smectite is then subjected as an aqueous slurry to high intensity magnetic separation, to separate the pillared smectite, and the beneficiated kaolin is recovered as product.

Abstract: A process for beneficiating a particulate zeolite petroleum cracking catalyst having metal values in excess of 1000 ppm nickel equivalents. The particulate catalyst is passed through a magnetic field in the range of from about 2 Tesla to about 5 Tesla generated by a superconducting quadrupole open-gradient magnetic system for a time sufficient to effect separation of said catalyst into a plurality of zones having different nickel equivalent concentrations. A first zone has nickel equivalents of about 6,000 ppm and greater, a second zone has nickel equivalents in the range of from about 2000 ppm to about 6000 ppm, and a third zone has nickel equivalents of about 2000 ppm and less. The zones of catalyst are separated and the second zone material is recycled to a fluidized bed of zeolite petroleum cracking catalyst. The low nickel equivalent zone is treated while the high nickel equivalent zone is discarded.

Abstract: A material separator that magnetically separates the desired material from a slurry as the slurry travels along one or more passageways between a hopper and a discharge chute. Riffle lines can also be incorporated in such passageways to increase the separation capabilities of the material separator. Additionally, as the need arises, more or fewer passageways can be added or removed to adjust the collection efficiency of the material separator.

Abstract: A continuous magnetic separator, which allows separation of fluid streams containing materials of a wide range of susceptibilities by employing high magnetic gradients distributed in a non-random repetitive pattern throughout the 3 dimensional space inside an elongate non magnetic outer housing which contains the fluid stream. The high magnetic gradients are produced by a multiplicity of small cross sectional area rods, which are a combination of alternating regions of ferromagnetic and non ferromagnetic materials which produce distortions of a magnetic field applied through the non magnetic housing, and produce channels of high gradient field which diverge from the fluid stream direction toward pairs of non magnetic partitions located with openings in the fluid stream flow which form a plenum to divert the flow of higher susceptibility fluid streams away from the main fluid stream.

Abstract: Non-magnetic, conductive particles are separated from one another on the basis of their respective electrical conductivities. This is achieved by irradiating the particles with microwave or radio frequency electromagnetic radiation and simultaneously subjecting the particles to a magnetic field. The eddy currents induced in the particles by the electromagnetic irradiation interact with the magnetic field to cause movements of the particles which are dependent on their conductivities.

Abstract: A high-intensity magnetic separator operating in a wet environment for separating magnetic particles from a fluid material comprises a separating unit which comprises a vertically extending housing having side walls defining a separating chamber, valved ducts for alternately circulating the fluid material and a washing liquid vertically downwardly through the separating chamber, and permanent magnets arranged adjacent the side walls of the housing for generating therebetween a magnetic field extending perpendicularly to the direction of circulation of the fluid material in the separating chamber.

Abstract: Disclosed is an armature or matrix for a magnetic separator which is to be placed into a magnetic field, for separating paramagnetic components from a particular wet or dry feed, wherein the matrix has a number of low-corrosion or corrosion-free soft magnetic plates disposed parallel to each other and spaced from each other in a direction perpendicular to the magnetic field, nonmagnetic spacers are interposed between the plates, and nonmagnetic ties are used to tie the plates and the spacers together into the matrix.

Abstract: An apparatus for separating ferromagnetic materials from fluid media has a working passage divided by a partition into sections filled with an insert of ferromagnetic material. A magnetizing system is arranged coaxially with the working passage. An arrangement for imparting reciprocations to the magnetizing system is fashioned as at least two electromagnetic coils with one such coil at the opposite ends of the passage, parameters of the coils being such as to ensure movement of the magnetizing system between two extreme positions.

Abstract: A magnetic field separation system includes a magnet unit having first and second pole members forming a linear gap with a relatively high magnetic field density therebetween. A flow chamber comprised of first and second optically transparent slides mounted so as to define a generally planar fluid pathway therebetween, passes a biological fluid over the linear gap at an angle, with flow through the pathway being accomplished by gravity and capillary action. Biological fluid, when sensitized to magnetic reaction, passes through the fluid pathway, thereby resulting in perceivable separation of the sensitized particles.

Abstract: A pulsed superconducting magnet system includes a vacuum vessel and a cryogenic containment vessel assembly disposed within the vacuum vessel. A superconducting coil is positioned within the cryogenic containment vessel assembly for providing a magnetic field. The vessel assembly includes a helium vessel including a relatively thin metallic inner tube for holding liquid helium and the coil. The helium vessel also includes a relatively thick outer tube encompassing the inner tube with a relatively rigid insulative spacer positioned between the inner and outer tubes so that the tubes are not in contact with each other. The outer tube is predominantly metallic and has at least one joint formed of insulative material to prevent the outer tube from forming a low electrical resistance loop. The inner tube provides a vacuum seal and the outer tube provides structural support for the inner tube so that eddy current losses resulting from ramping of the current to the coil are reduced.

Abstract: Superconducting magnetic separator has a canister that includes upper and lower pole pieces and a support post or tube extending axially between the pole pieces to absorb and resist the compressive forces imparted by the strong magnetic fields of the superconducting magnet. The support post has one or more axial passages therein for conducting a slurry of water and kaolin which exits the post through openings distributed over the surface thereof. The slurry flows radially through a matrix or packing of a filamentous magnetic material, such as stainless steel wool. The slurry exits through an outlet tube by passing through or around one of the pole pieces.

Abstract: A large magnetic separator for separating magnetic fines from nonmagnetic product is equipped with a dual mode power supply. A first mode of the dual power supply is provided for accelerated imposition of the design magnetic field. A second mode of the dual power supply is provided for the maintenance of the desired magnetic field at an improved power factor, which field is in the range of 20 kilogauss. With the field imposed, a canister centrally placed in the magnet with a magnetic stainless steel wool matrix separates magnetic fines from nonmagnetic product until the matrix is saturated. Upon saturation of the matrix, the power supply dissipates to the power grid electrical energy from the collapse of the magnetic field. There results a larger classifying duty cycle of the high stationary magnetic fluid utilized for classification.

Abstract: A magnetohydrostatic centrifuge of unique geometry in which an elongated separation space is provided within the bore of an elongate cylindrically shaped multipolar magnet. Separations are accomplished both with and without rotation by passing particles to be separated through the separation space within a paramagnetic or ferromagnetic fluid. Certain separations are preferably made using a quadrupolar magnet configuration with a paramagnetic fluid, others with a quadrupolar magnet and a ferromagnetic fluid, and still others, with a sextupolar magnet and a ferromagnetic fluid. Efficient use is made of the magnetic field through the use of a plurality of inner ducts creating a plurality of thin, elongate separation channels characterized by long particle dwell time and short drift distances during the separation process. Significant throughput capacity is achieved in a system in which the magnetic medium is pumped through the separator.

Abstract: A permanent magnetic filter is provided in a form that includes a closed vessel having an inlet plenum, a central filtering region, and an exit plenum. The central filtering region includes a plurality of magnet filter tubes arranged in a substantially uniform array that is supported in a manner which achieves satisfactory filtering, minimizes fluid pressure drop, and permits easy cleaning.

Abstract: An apparatus and a method of effecting the separation of paramagnetic particles from non-paramagnetic particles in the fine and finest particle size ranges of approximately below 1 mm suspended in a fluid medium by the passage of the fluid medium through an apparatus having a separation channel suitable for containing a flow of the fluid medium flowing therethrough and which includes at least two exits suitable for separating the paramagnetic particle enriched fluid medium from the paramagnetic particles depleted fluid medium into two product streams, the separation channel defining the direction of the fluid medium flow being at least partially paralleledly oriented with respect to a magnetic induction member such that the magnetic flux exerted upon the paramagnetic particles within the fluid medium flow are repulsed from the induction member and entrained within the fluid medium to countereffect the effect of inertial forces or gravitational forces on the fluid flow, and separated from the non-paramagnetic

Abstract: A mineral separator system providing for the removal of conductor and semiconductor materials from a pulp fluid containing nonconducting materials. Pairs of spaced magnet assemblies provide alternate or successive magnetic fields obliquely across a separation chamber through which the pulp fluid flows. Eddy currents set up in the conductors cause the conductor particles to migrate to a wall in accordance with the orientation of the magnetic field. Electrical stimulation of the semiconductors through the pulp fluid causes the semiconductors to have eddy currents induced therein.

Abstract: A magnetic separator to separate fine particles or ferrosilicon of magnetite from water. A drum is provided which rotates counter to flow of water past the drum. Magnets are provided within the drum to attract magnetite or ferrosilicon in the water to the drum.

Abstract: Separation of admixtures of particles, fluids or gases having different magnetic susceptiblities is effected by subjecting a moving stream of the mixture to simultaneous gravitational and magnetic forces in a manner such that relatively non-magnetic materials respond significantly to the gravitational force and relatively magnetic materials respond preferentially to the magnetic force.

Abstract: An improved magnetic separator arrangement is provided. One major improvement relates to modifications facilitating utilization of relatively dense and tightly packed matrix material within races, through which a slurry of ore material passes during separation. The tightly packed matrix material is accommodated through utilization of flexible race walls, and compression and expansion mechanisms selectively operable to facilitate separation. A cover mechanism inhibits water flow turbulence, during an initial setting up of a magnetic field to entrap magnetic material within the matrix element of each race. A preferred retainer mechanism is provided which facilitates mounting of flap members for use in association with a cover mechanism, as well as retention of the matrix material in a desired position. In a preferred embodiment, the previous features are incorporated into a system fed with an ore material from an inner portion of a circular race, i.e. the center of a rotating drum.

Abstract: A process for treating effluents contaiing cyanide from mining operations wherein magnetic separation is used prior to treatment with hydrogen peroxide.

Abstract: Separation of relatively magnetic and relatively non-magnetic particles suspended in a fluid medium is effected by feeding a stream of the medium across at least one end face of a magnet so as to cause the magnetic and non-magnetic particles to diverge and to be directed into separate collector channels.

Abstract: A magnetohydrostatic centrifuge of unique geometry in which an elongated separation space is provided within the bore of an elongate cylindrically shaped multipolar magnet. Separations are accomplished both with and without rotation by passing particles to be separated through the separation space within a paramagnetic or ferromagnetic fluid. Certain separations are preferably made using a quadrupolar magnet configuration with a paramagnetic fluid, others with a quadrupolar magnet and a ferromagnetic fluid, and still others, with a sextupolar magnet and a ferromagnetic fluid. Efficient use is made of the magnetic field through the use of a plurality of inner ducts creating a plurality of thin, elongate separation channels characterized by long particle dwell time and short drift distances during the separation process. Significant throughput capacity is achieved in a system in which the magnetic medium is pumped through the separator.

Abstract: A method for continuous separation of magnetizable paramagnetic and/or diamagnetic particles from a flowing fluid laden with the particles includes guiding the flow through a separation region, penetrated by a high-gradient magnetic field along a primary flow route. The particle-laden fluid flow of the separation region is supplied in the form of a multiplicity of partial flows, each passing through feed zones supplied from the direction of the outer periphery of the separation region and through feed openings of flow guiding bodies. The feed openings are distributed over the cross section of the separation region in the form of at least one feed hole field. The partial flows are then guided inside the separation region through at least one separation hole field of pole element orifices distributed over the cross section of the separation region and associated wall parts which are penetrated by the primary magnetic flux in the direction of the axes of their orificies.

Abstract: The present invention relates to methods and apparatus for segregating paramagnetic from diamagnetic particles in particulate material and, in particular, to the open gradient magnetic separation of ash producing components and pyritic sulfur from coal. The apparatus includes a vertical cylinder and a rotatable vertical screw positioned within the cylinder, the screw having a helical blade angled downwardly and outwardly from the axis. Rotation of the vertical screw causes denser particles, which in the case of coal include pyritic sulfur and ash, which are paramagnetic, to migrate to the outside of the screw, and less dense particles, such as the low sulfur organic portion of the coal, which are diamagnetic, to migrate towards the center of the screw. A vibration mechanism attached to the screw causes the screw to vibrate during rotation, agitating and thereby accommodating further segregation of the particles.

Abstract: A method and mechanism for the magnetic separation of material from a fluid containing magnetic and non-magnetic material, passing the fluid through matrix containing canisters wherein the canisters are carried on a turret which moves axially and rotatably. In four quadrilaterally arranged locations, two canisters are supported in a separation position within coils until they are filled and then are moved axially and rotationally to cleansing stations while cleansed canisters are rotated and moved axially up into the separation stations. A distribution head connects to the turret for delivery of magnetic material containing fluid and cleansing fluid.

Abstract: A separator for the magnetic removal of magnetizable particles, consists of an application unit for the application and the transport of sample and buffer, a separating unit of plastic or glass for the removal of the magnetizable particles, and a collecting unit. The separating unit is provided with one or more electromagnets, which are able, owing to their magnetic force, to hold the magnetizable particles back in the separating unit.

Abstract: The invention provides a magnetic separator for the separation of a fluid mixture into a more magnetic portion and a less magnetic portion wherein the magnetic field generator comprise a pair of solinoid coils located opposite each other and between which a conveyor assembly carrying a matrix of magnetic elements and the fluid material to be treated passes during use of the magnetic separator.

Abstract: Apparatus for the magnetic treatment of a flowing liquid, comprising a housing (1) and an annular permanent magnet (4) having radially oriented pole shoes (5, 6). Within the cylindrical space of the magnet and coaxially thereto a ferromagnetic cup member (7) is provided, which is in magnetic communication with one of the pole shoes and has slots or apertures (8) in the walls to permit the passage of liquid. The cup member (7) is provided with a radially extending collar (10) which together with the other pole shoe (6) form a magnetic field gap (11) through which the liquid shall flow. The collar (10) is part of a cap (9) adapted to be moved axially with respect to the cup member (7) to adjust the width of the magnetic field gap and thus the magnetic influence on the liquid.

Abstract: A high gradient magnet is disclosed having a coil of superconducting material immersed in liquid helium in a toroidal shaped liquid helium vessel, supported in axial spaced concentric relation to a toroidal shaped liquid nitrogen vessel which forms one end of a toroidal heat shield made of high heat conductive material in which the liquid helium chamber is supported by a first coil support ring and a second coil support ring. The heat shield and liquid helium chamber are in turn supported in a toroidal shaped vacuum chamber which is in turn supported in a heavy iron cylindrical enclosure closed at the ends and having an opening through the center of its ends. A slurry containing iron particles may pass through the opening in the center whereby the iron particles from the slurry are retained by a matrix. The first coil support ring has two ends supported on the vacuum vessel and an intermediate part.

Abstract: A magnetic separator for separating relatively magnetic particles from relatively non-magnetic particles comprises a superconducting magnet providing a uniform magnetic field and a current carrying conductor dispersed in the field such that relatively magnetic particles are captured by the conductor. The current conductor is in the form of a matrix having either randomly, radially, spirally or parallelly set pairs of wires.

Abstract: Magnetic separator in which the particles forming the mixture to be separated drop from an opening into a separating space, where they are exposed to the action of a magnetic field having a gradient in the horizontal plane and produced outside the separating space.The magnetic field is of the multipole type having a high dipole component in a direction in a horizontal plane in the separating space, in order to apply a high magnetic force to the magnetized particle, in order to increase the separation as a function of their magnetic susceptibility. The magnetic separator according to the invention can more particularly be used for the separation or cleaning of particles having different magnetic properties.

Abstract: The invention relates to a coil arrangement for a magnetic separator having a strong field, in which the solenoid coils are provided in the first part only of the length of the housing and a magnetic shunt is arranged between the first and second parts of the length of the housing. A considerable reduction in the coil weight is achieved by such a construction.

Abstract: The invention relates to apparatus for separating ferromagnetic particles from a slurry, in which the slurry passes through a tunnel-shaped channel which is surrounded by a magnet coil the iron yoke of which is constructed asymmetrically in such a way that the magnetic field strength in the channel increases from the top towards the bottom.