Fluid Suspension Patents (Class 209/232)
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Patent number: 4594149Abstract: 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.Type: GrantFiled: May 21, 1982Date of Patent: June 10, 1986Assignee: Mag-Sep Corp.Inventors: Uri T. Andres, Alan L. Devernoe, Michael S. Walker
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Patent number: 4557828Abstract: This invention relates to a method in the operation of magnetic separators comprising a plurality of canisters or like devices (4) containing magnetizable induction poles (41) arranged to pass through a magnetic field (1). While the canisters (4) are located in the magnetic field (1), a particle suspension is supplied (5) to the canisters, in which magnetizable particles are attracted to the induction poles (41). Rinsing fluid (6) may optionally be supplied to the canisters while the canisters are still located within the magnetic field (1), thereby to remove non-magnetic particles through discharge means (7a, 7b) for fluid and non-magnetic material. Outside the magnetic field flushing fluid is supplied in a flushing station (8, 56), this flushing fluid removing magnetic material through discharge means (8, 57) for magnetic material. The canisters (4) are provided with flexible sealing lips (36) as disclosed in U.S. Pat. No.Type: GrantFiled: November 22, 1982Date of Patent: December 10, 1985Assignee: Sala International ABInventor: Vital Dittrich
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Patent number: 4526681Abstract: A method of magnetically separating particles having different magnetic susceptibilities. A magnetic field is established in a colloidal suspension of magnetic particles which distribute to form a magnetic susceptibility gradient. The particles to be separated are introduced into the colloidal suspension. The introduced particles migrate along the magnetic susceptibility gradient to different regions having approximately the same magnetic susceptibilities as the introduced particles.Type: GrantFiled: October 31, 1983Date of Patent: July 2, 1985Assignee: Purdue Research FoundationInventors: Fritz J. Friedlaender, Makoto Takayasu, Jiann-Yang Hwang, Leon Petrakis
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Patent number: 4496457Abstract: A magnetic separator has a support defining an upright axis, two stationary pole pieces spaced from and around the axis on the support, and a stationary inner ferromagnetic piece extending between the pole pieces and axially bridging same. This inner piece defines with the outer pieces respective angularly offset separation gaps. Means is provided, normally in the form of coils, for energizing the pole pieces and thereby creating a magnetic field extending radially across the gaps and through the inner piece. An annular rotor centered on the axis extends through the gaps. This rotor is formed of an endless angular succession of groups of nonradially extending and spaced-apart rotor elements. It is rotated about the axis to orbit the groups of rotor elements through the gaps and particulate material including magnetically attractable particles is fed axially down through the rotor as it rotates. Particles are then washed from the elements at a location angularly offset from the gaps.Type: GrantFiled: September 24, 1982Date of Patent: January 29, 1985Assignee: Veb Schwermaschinenbau-Kombinat "Ernst Thalmann" MagdeburgInventor: Alfred Schickel
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Patent number: 4478711Abstract: The invention relates to separators for separating relatively magnetic particles from relatively non-magnetic particles in the dry state. The method of the invention involves allowing a mixture of the particles to flow past a magnet, preferably a high strength magnet, which is so arranged as to produce a strong magnetic field in a radial direction, the radial component greatly exceeding the axial component and the axial component exerting a force which is preferably substantially less than that of gravity. In this way, the magnetic particles are diverted towards the magnet but not retained by it while the non-magnetic particles continue in their original path.Type: GrantFiled: July 9, 1982Date of Patent: October 23, 1984Assignees: Imperial College of Science & Technology, Cryogenic Consultants Ltd.Inventors: Enrico Cohen, Jeremy A. Good
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Patent number: 4455228Abstract: A rotary magnetic separator in which there are 4, 6, 8 or any greater even number of rotor plates and at least one yoke structure having 4, 6, 8 or any greater even number of legs corresponding to the number of rotor plates, the legs being arranged in two sets having equal numbers. A winding structure is provided for each set and energized such that the legs of one set present an opposite polarity pole to the legs of the other set. The central section of the or each yoke structure has an enlarged cross-section area arranged in step-wise manner.Type: GrantFiled: September 28, 1982Date of Patent: June 19, 1984Inventor: George H. Jones
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Patent number: 4422935Abstract: An appartus for use in the magnetic treatment of liquids in order to reduce precipitation of dissolved materials. In one embodiment the apparatus subjects liquids to magnetic flux by providing an inlet (2) for the liquid, an outlet (3) for the liquid after it has been subjected to magnetic flux, a fluid flow path connecting the inlet and the outlet, a magnetic body, (4), and material (24) for protecting a sensitive part of the magnetic body from the liquid. In this embodiment the magnetic body includes a first magnetic pole (17) made of material which is sensitive to contact with the liquid and a second magnetic pole (25) of opposite polarity to and spaced from the first magnetic pole to define a gap between the poles. The magnetic poles are so disposed that lines of magnetic flux pass between them and, in so doing, traverse at least part of the fluid flow path.Type: GrantFiled: July 21, 1981Date of Patent: December 27, 1983Assignee: Bernard Strutt Agencies LimitedInventor: Denis A. E. Mattingly
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Patent number: 4416771Abstract: An eddy current magnetic ore concentrator, using parallel cup cores, where an alternating and direct independent field with phase offset removes and sorts metallic ore components from ferrous and nonferrous ore, where the metal may be in solution or the native form.Type: GrantFiled: May 23, 1981Date of Patent: November 22, 1983Inventor: Lance L. Henriques
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Patent number: 4394264Abstract: A machine for filtering particles, in particular magnetically attractable particles, from a liquid comprises a housing having a vessel, a weir in the vessel subdividing same into an elongated treatment compartment having a predetermined compartment length and an outlet compartment, this housing being formed in the treatment compartment with a sump, and an inlet for introducing a liquid to be cleaned into the treatment compartment and an outlet for withdrawing liquid from the outlet compartment. In addition the apparatus has a carriage displaceable longitudinally on the vessel above the treatment compartment and suspending a vertical carriage frame in the treatment compartment, an array of horizontally extending spaced magnetic bars carried on the carriage frame in the treatment compartment, with the bars each having a bar length measured parallel to this treatment compartment that is substantially less than the compartment length.Type: GrantFiled: September 16, 1981Date of Patent: July 19, 1983Assignee: SMS Schloemann-Siemag AktiengesellschaftInventors: Werner Schimion, Josef Herbrand
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Patent number: 4378252Abstract: A process for increasing the color purity of iron oxide pigment particles admixed with color-modifying impurities and obtained by the Penniman process or the aniline process, comprising introducing the particles into a magnetic field, and removing from the magnetic field two fractions of different magnetizability, the first fraction being iron oxide pigment particles of increased color purity and the second fraction being enriched in impurities.Type: GrantFiled: May 29, 1981Date of Patent: March 29, 1983Assignee: Bayer AktiengesellschaftInventors: Peter Kiemle, Franz Hund, Ingo Pflugmacher, Wolfgang Rambold
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Patent number: 4375407Abstract: An improved high gradient magnetic separation device wherein field gradients are produced by applying a relatively uniform magnetic field to a matrix of filamentary ferromagnetic material contained in a separation chamber, the improvement comprising providing the filamentary material with a coating of a hydrogel polymer. The improved device is particularly useful for the separation of biological entities, such as cells, proteins, organelles, enzymes, and the like for mixtures containing same.Type: GrantFiled: June 22, 1981Date of Patent: March 1, 1983Assignee: The Franklin InstituteInventor: Paul L. Kronick
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Patent number: 4359382Abstract: An improved magnetic structure for a magnetic ore separator has an arcuate base attached to a support which in turn is connected to end pieces which mount shaft connectors by which the magnetic structure is mounted on a shaft. A plurality of radial elements are positioned in spaced relationship between the base and an outer cover. A plurality of azimuthal elements are positioned on the base between the radial elements. A plurality of angled elements are positioned between the radial elements and the azimuthal elements. The direction of magnetization of each element is displaced angularly from that of the adjacent element in uniform increments of less than 90.degree..Type: GrantFiled: May 15, 1981Date of Patent: November 16, 1982Assignee: Magnetics International, Inc.Inventor: Donald G. Morgan
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Patent number: 4354856Abstract: A method and apparatus for recovering magnetic particles from a fluid stream is provided. The fluid is contacted with a ferromagnetic element to cause attraction and collection of the particles. The ferromagnetic element is then heated to a temperature near or above the Curie temperature of at least one of (1) the ferromagnetic element and (2) collected magnetic particles. The collected magnetic particles are then disengaged from the ferromagnetic element. Preferably the ferromagnetic element is disposed in an applied magnetic field and the heating is preferred by passing alternating electric current through the element thereby causing sufficient vibration to disengage the particles.Type: GrantFiled: January 26, 1981Date of Patent: October 19, 1982Assignee: Chevron Research CompanyInventor: Robert T. Lewis
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Patent number: 4352730Abstract: Method for cleaning particles trapped in a filtermatrix of a magnetic separator in the presence of a magnetic field. A cleaning fluid is passed through the filtermatrix which the filtermatrix is heated to a temperature higher than the Curie-temperature of the filtermatrix material.Type: GrantFiled: January 26, 1981Date of Patent: October 5, 1982Assignee: Holec N.V.Inventor: Jacob I. Dijkhuis
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Patent number: 4330399Abstract: A method of separating more magnetic particles from less magnetic particles, contained in a fluid medium which is subjected to a magnetic field, in which as fluid liquified gas is used.Type: GrantFiled: January 2, 1981Date of Patent: May 18, 1982Assignee: Holec N.V.Inventor: Jacob I. Dijkhuis
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Patent number: 4317719Abstract: A wet-type magnetic ore separation apparatus which comprises a main body, a magnetic field forming means provided in the central portion of said main body, a movable frame member having a magnetic material component collecting means mounted therein and movable through said magnetic field forming means, a center chamber positioned in said central portion of the main body surrounding said magnetic field forming means for collecting non-magnetic material component and side chambers positioned on the opposite sides of said center chamber for collecting magnetic material component.Type: GrantFiled: October 6, 1980Date of Patent: March 2, 1982Inventor: Tomotoshi Tokuno
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Patent number: 4316798Abstract: A separating chamber for a magnetic separator is disclosed, which separating chamber includes a canister having at least one inlet and at least one outlet and a fluid-permeable magnetisable packing material within the canister. When feed material from which magnetisable particles are to be separated is supplied to the inlet(s), it passes into the packing material by way of a fluid-permeable partition which serves to distribute the feed material over a large area within the packing material. By virtue of an externally applied magnetic field, magnetisable particles within the feed material are magnetically attracted to collecting sites within the packing material. So as to mitigate the effect of fluid passing through apertures in the partition which tends to produce high velocity jets, thereby prejudicing the separation efficiency, the partition is double-walled, the two walls being spaced slightly apart and being apertured.Type: GrantFiled: August 7, 1980Date of Patent: February 23, 1982Assignee: English Clays Lovering Pochin & Company Ltd.Inventors: Walter B. Jepson, Peter W. Riley, David Hocking
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Patent number: 4303504Abstract: A magnetic filter in which an elongate ferromagnetic filter member is disposed within a housing having an inlet for fluid to be filtered and an outlet for filtrate with magnet means outside the housing for creating a magnetic field across the filter member. The member conveniently is in the form of an array of spaced apart bars of rectangular cross-section, the magnetic field being directed normal to the longitudinal axes of the bars and substantially parallel to the longer cross-sectional side of each bar.Type: GrantFiled: August 25, 1980Date of Patent: December 1, 1981Assignee: United Kingdom Atomic Energy AuthorityInventor: Gerald Collins
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Patent number: 4293410Abstract: The magnetic filter has a magnetic cylinder (2) pivotally mounted in a housing (1) and having an inclined stripper (14). The bottom of the cylinder (2) is surrounded by a casing (5), whereby a flow channel (6) for the medium to be filtered is created between the cylinder (2) and the casing (5). One portion (5b) of the casing (5) can be mobile so that the flow-channel profile section can be changed. Decreasing the channel profile section causes an increase in the flow resistance, resulting in a backwash, so that even in cases of small quantities the level and hence the inflow characteristic of the filter is approximately the same as that of the full-load quantity.Type: GrantFiled: September 13, 1979Date of Patent: October 6, 1981Assignee: Hans Streuli AGInventors: Hans Streuli, Joseph Ruedi
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Patent number: 4290528Abstract: Magnetic separator apparatus is disclosed including means for establishing a magnetic field in a predetermined zone, a separating chamber provided with an inlet and an outlet for fluid, fluid-permeable and magnetisable packing material disposed within the separating chamber, a compensating element incorporating ferromagnetic material coupled to said separating chamber, and means for moving the separating chamber and the associated compensating element between a first position in which the separating chamber is within the predetermined zone and a second position in which the separating chamber is outside the predetermined zone. The magnetic field interacting with the compensating element generates balancing forces reducing the force required to move the separating chamber between its two aforesaid positions.Type: GrantFiled: June 2, 1980Date of Patent: September 22, 1981Inventor: Zdenek J. J. Stekly
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Patent number: 4260477Abstract: A magnetic separator comprising an annular housing rotatable about a generally vertical axis and adapted to contain a matrix therein composed of a plurality of separate elements of magnetic material said annular housing being optionally sub-divided into a plurality of partitions around the circumference thereof, outlets for elements constituting the matrix in the lower region of the said partitions, means for releasably opening said outlets at one or more required positions around the circumference of the housing, means for cleaning elements constituting said matrix and which issue from said outlet in use, and further means for returning cleaned elements to the annular housing after cleaning.Type: GrantFiled: March 5, 1979Date of Patent: April 7, 1981Assignee: National Institute of MetallurgyInventor: Ian J. Corrans
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Patent number: 4246097Abstract: A method and device for separating particles suspended in a liquid by guiding these particles through a bed of balls of ferro magnetic material and by moving these balls together with the particles through a magnetic field, by supplying a washing liquid during the passage of the particles through the magnetic field for washing off the non-magnetic particles and by supplying a liquid outside the magnetic field for discharging the magnetizable particles. After leaving the magnetic field the balls and the magnetizable particles fall freely over some distance.Type: GrantFiled: January 29, 1979Date of Patent: January 20, 1981Assignee: Societe Anonyme CriblaInventor: Emile R. J. Pouillon
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Patent number: 4239619Abstract: A process and apparatus for separating magnetic particles from an ore material whereby an ore material intermixed with a liquid or gaseous carrier is fed through a separating zone acted upon by a magnetic field generated by a superconducting solenoid magnet. During passage through the separating zone, the magnetic particles in the ore material are attracted toward the periphery of the zone while the nonmagnetic particles substantially remain at the center whereupon each is then separately collected by mechanical means.Type: GrantFiled: May 7, 1979Date of Patent: December 16, 1980Assignee: Union Carbide CorporationInventors: Frank F. Aplan, Timothy M. Todd
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Patent number: 4235710Abstract: A flowable mixture of particles is separated in accordance with the magnetic susceptibilities of the particles by feeding the mixture into a magnetic field in such a manner that the mixture is urged by a non-magnetic force, e.g., gravity, towards the locus at which the magnetic energy gradient H.differential.H/.differential.X of the field is at a maximum. The magnetic energy gradient defines a magnetic barrier along the locus of its maximum magnitude which exerts a magnetic force on the particles in opposition to the non-magnetic feeding force. Particles having a magnetic susceptibility lower than that value at which the force exerted by the magnetic barrier balances the non-magnetic feeding force pass through the barrier, whereas particles of greater magnetic susceptibility are prevented from crossing from one side of the barrier to the other side and may thereafter be recovered separately from the less susceptible particles.Type: GrantFiled: July 3, 1978Date of Patent: November 25, 1980Assignee: S. G. Frantz Company, Inc.Inventor: Jack J. Sun
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Patent number: 4213854Abstract: Magnetic separating apparatus is disclosed which includes means for establishing a magnetic field in a predetermined zone, a separating chamber having an inlet and an outlet for fluid, fluid-permeable and magnetizable material disposed within the separating chamber, ferromagnetic shielding means for magnetically screening a zone remote from the predetermined zone; and means for moving the separating chamber between the predetermined zone and the remote zone. When within one of the remote zones, a separating chamber is screened from the magnetic field applied by the magnet within the predetermined zone, and thus the packing material within the separating chamber may be particularly efficiently regenerated within this zone. This regeneration may e.g. be carried out by passing clean water through the packing material, optionally after having demagnetized the packing material, in order to flush out magnetizable particles from collecting sites within the packing material.Type: GrantFiled: February 27, 1978Date of Patent: July 22, 1980Inventor: Zdenek J. J. Stekly
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Patent number: 4212651Abstract: This invention relates to an improved device and method for the high gradient magnetic beneficiation of dry pulverized coal, for the purpose of removing sulfur and ash from the coal whereby the product is a dry environmentally acceptable, low-sulfur fuel. The process involves upwardly directed recirculating air fluidization of selectively sized powdered coal in a separator having sections of increasing diameters in the direction of air flow, with magnetic field and flow rates chosen for optimum separations depending upon particulate size.Type: GrantFiled: May 30, 1979Date of Patent: July 15, 1980Assignee: The United States of America as represented by the United States Department of EnergyInventors: David M. Eissenberg, Yin-An Liu
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Patent number: 4208277Abstract: A rotary magnetic separator is disclosed which includes a ferromagnetic rotor provided with a plurality of arcuate separating chambers supported at its periphery. Each separating chamber comprises an inlet for feed suspension in its bottom coupled to a pump by way of a flexible pipe, and an outlet for feed suspension in its top, there being a fluid permeable and magnetizable packing material between the inlet and outlet. Two electromagnet poles are magnetically coupled to the rotor which serves as a further pole. The rotor can be turned by a motor so as to move certain separating chambers into the vicinity of the electromagnet poles. Feed suspension can then be supplied to these separating chambers and magnetizable particles from the feed suspension may become entrained in the packing material. Subsequently the rotor can be turned back to its original position and these separating chambers can be flushed out with clean water.Type: GrantFiled: December 12, 1977Date of Patent: June 17, 1980Assignee: English Clays Lovering Pochin & Company LimitedInventors: Charles H. Lofthouse, David G. Bell, Leyland R. Phillips
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Patent number: 4208278Abstract: A separating chamber for a magnetic separator is disclosed, which includes a rigid canister having an inlet and an outlet for fluid, and a packing of magnetizable material disposed within the canister so that, in use, fluid supplied to the inlet passes through the magnetizable material towards the outlet. Plates are spaced apart within the packing material and disposed substantially along the general direction of flow of the fluid through the packing material, whereby the plates act to limit permanent deformation of the packing material by magnetic forces acting on said material upon the chamber being moved axially into and out of a zone in which a magnetic field is established.Type: GrantFiled: February 27, 1978Date of Patent: June 17, 1980Inventor: Zdenek J. J. Stekly
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Patent number: 4204948Abstract: In a moving matrix magnetic separator in which a matrix device moves relative to a processing device and a seal assembly seals a longitudinal section of the matrix device to an associated processing device, the seal assembly including a sealing surface on one of the devices and a seal on the other, the improvement comprising said seal including a base portion extending generally longitudinally in the direction of motion of the matrix device; first and second salient, resilient lip portions extending from the base portion toward an associated sealing surface in the gap between the matrix device and the processing device, and extending generally longitudinally to the direction of motion of the matrix device and spaced from each other transversely to the direction of motion of the matrix device and forming a channel therebetween; a pressurized purge fluid chamber formed by the channel and the associated sealing surface; and means for supplying purging fluid to the purge fluid chamber formed by the channel and liType: GrantFiled: December 18, 1978Date of Patent: May 27, 1980Assignee: Allis-Chalmers CorporationInventors: Ionel Wechsler, John A. Oberteuffer, John J. Nolan, Henry H. Kolm, Eric Georgelis, Bo R. Arvidson
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Patent number: 4191591Abstract: A method and apparatus is disclosed for cleaning magnetic material attracted to a ferromagnetic matrix within a separating chamber of a magnetic separator. The magnetic material retained by the matrix is cleaned in a high pressure cleaning stage in which both a liquid medium and a gaseous medium are provided under pressure to clean the magnetic material. As the gaseous medium passes through the matrix, it does so with a pressure drop which is substantially lower than that of the liquid passing through the matrix. Consequently, as the gaseous medium expands, it transfers a portion of its kinetic energy to the liquid which provides improved and more rapid cleaning effects than known rinsing steps.Type: GrantFiled: December 20, 1978Date of Patent: March 4, 1980Assignee: Klockner-Humboldt-DeutzInventors: Hans Bender, Georg Schnabel, Gottfried Duren, Wolf Zabel
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Patent number: 4190524Abstract: A magnetic separator, for separating magnetizable particles from a fluid, consists of a separating chamber filled with a paramagnetic packing material, and a magnet for establishing a magnetic field within the packing material. The packing material is pervious to the fluid. A process for separating magnetizable particles from a fluid consists in applying a magnetic field to the packing material while passing the fluid therethrough, so as to attract the magnetizable particles in the fluid to collecting sites within the packing material.Type: GrantFiled: July 21, 1975Date of Patent: February 26, 1980Assignee: English Clays Lovering Pochin & Co., Ltd.Inventor: James H. P. Watson
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Patent number: 4166788Abstract: The method of concentrating magnetic ore consists of forcing a fluid medium to flow along guides having curved and rectilinear portions; and directing the flow by a pulsating magnetic flux, so that the heavy magnetic particles are forced towards the outer side of the guides. Less heavy particles of the nonmagnetic fraction are washed away by the flow of a fluid medium. In the curved portions of the guides, the magnetic flux coincides in direction with the centrifugal force; in the rectilinear portions of the guides, there is no centrifugal force and the magnetic flux is directed at right angles to the flow of the ore to be concentrated. The magnetic centrifugal separator includes and air-tight housing having curved portions alternating with rectilinear portions. Sources of magnetic flux are located on these portions of the housing. Means are provided to cause the magnetic flux to pulsate.Type: GrantFiled: December 8, 1976Date of Patent: September 4, 1979Inventors: Efim L. Druz, Jury E. Druz
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Patent number: 4157954Abstract: Method for improving production rates during magnetic separation of magnetically attractable particles dispersed in a fluid carrier, as for example during separation of weakly magnetic discoloring contaminants dispersed in a clay slurry. The dispersion is passed through a ferromagnetic filamentatious matrix within a canister disposed in a magnetic field. The matrix is part of a magnetic separator system characterized by a separation parameter p, where p is a function of the geometry and magnetic and electrical properties of the separating apparatus; and of the rheological and magnetic properties of the dispersion. By determinatively adjusting the packing density of the matrix in the canister, and/or by utilizing appropriate solids content in the slurry, production rate is controlled or optimized for a given brightness increase in the clay.Type: GrantFiled: October 12, 1976Date of Patent: June 12, 1979Assignee: J. M. Huber CorporationInventor: Robin R. Oder
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Patent number: 4153542Abstract: A high intensity magnetic field separator for the wet preparation of magnetizable particles of solids receives a charging material having a carrier medium with the particles therein through an arrangement of ferromagnetic bodies, organized as a matrix, in the area of a magnetic field. A hollow body of magnetically inert material is rotatably mounted for rotation about a vertical axis and carries a ferromagnetic body on its outer side and rotates in close proximity about at least one magnetic system which fixedly mounted within the interior of the rotating body. The hollow body is at least approximately rotationally symmetrical and is preferably a cylinder, but may take the shape of a truncated cone or a polygon. The magnetic system comprises an arrangement of superconducting coils in a cryostat which has refrigeration conduits extending down through the open of the hollow body and downwardly through the base of the machine which mounts the hollow body.Type: GrantFiled: December 6, 1977Date of Patent: May 8, 1979Assignee: Klockner-Humboldt-Deutz AGInventors: Hans Bender, Wolf Zabel, Gottfried Duren, Karl-Heinz Unkelbach
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Patent number: 4129498Abstract: A magnetic field is established in a predetermined zone. A quantity of fluid, from which native magnetizable particles are to be separated, is passed through the predetermined zone; and, at the same time, a magnetizable material is passed through the predetermined zone in the same direction as the fluid, so that native magnetizable particles are attracted to the magnetizable material.Type: GrantFiled: November 24, 1975Date of Patent: December 12, 1978Assignee: English Clays Lovering Pochin & Co. LimitedInventors: Norman O. Clark, James H. P. Watson
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Patent number: 4124503Abstract: Apparatus and method for magnetic separation. A magnetic field is established in a first zone by a magnet. Fluid containing magnetizable particles is passed through a separating chamber disposed in the first zone. The separating chamber comprises a rigid elongate canister having an inlet and an outlet for fluid, at least two fluid-permeable partitions dividing the space within the canister into several compartments, each of which extends substantially the full length of the canister, and a packing of magnetizable material disposed between the partitions. The form and disposition of the canister, the partitions and the packing material is such that the fluid flows from the inlet, through the packing material in a direction transverse to the axis of the canister, to the outlet, and the linear velocity of the fluid decreases as it passes through the packing material. As the fluid passes through the separating chamber, magnetizable particles within the fluid are magnetized and attracted to the packing material.Type: GrantFiled: May 28, 1976Date of Patent: November 7, 1978Assignee: English Clays Lovering Pochin & Co. LimitedInventor: James H. P. Watson
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Patent number: 4122005Abstract: A magnetic separator comprises a magnet and an iron cylinder rotatable in a gap in the magnet. The cylinder and the lower pole face of the magnet define a separator chamber. An aqueous suspension of magnetizable and non-magnetic particles is supplied to the separator chamber through channels extending through the magnet.Type: GrantFiled: June 13, 1977Date of Patent: October 24, 1978Assignee: Mineral Processing Development & Innovation ABInventors: Knut Sven Erik Forssberg, Karl Dieter Kopp
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Patent number: 4116839Abstract: A high intensity magnetic separator conveys particles of solids suspended in a carrier medium through a magnetic field between ferromagnetic bodies and has a rotor constructed of ferromagnetic material. The rotor rotates about an approximately vertical axis and has an arrangement of containers on the outer side which holds the ferromagnetic bodies. At least one magnetic system is fixed outside of the rotor and a portion of the rotor is included in the magnetic field between the poles of the magnetic system so that the field extends through the arrangement of containers. The rotor is constructed as a hollow body and the poles of different polarity are arranged together in alignment with one another in the magnetic system.Type: GrantFiled: February 7, 1977Date of Patent: September 26, 1978Assignee: Klockner-Humboldt-Deutz AktiengesellschaftInventors: Karl-Heinz Unkelbach, Gottfried Duren
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Patent number: 4110222Abstract: The apparatus comprises a magnet for establishing a magnetic field in a first zone, and a separating chamber. The separating chamber is provided with an inlet and an outlet for fluid and contains a fluid-permeable packing of magnetizable material between the inlet and the outlet. One or more parts of the separating chamber consist of magnetic field concentrating means constituted by ferromagnetic material. This part (or each of these parts) would otherwise occupy a region of relatively low magnetic field intensity when the separating chamber is within the first zone and a magnetic field was established in the first zone by means of the magnet. The remainder of the separating chamber consists of substantially non-magnetizable material. Means are provided for moving the separating chamber into, and out of, the first zone and for passing fluid containing magnetizable particles through the separating chamber when within that zone so that magnetizable particles are magnetized and captured in the packing.Type: GrantFiled: April 12, 1976Date of Patent: August 29, 1978Assignee: English Clays Lovering Pochin & Company LimitedInventor: James H. P. Watson
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Patent number: 4078998Abstract: An improved magnetic separator for effecting high efficiency collection of magnetics contained in solution and slurries. The separator comprises an enclosed magnet space having inlet and outlet ports for flowing therethrough of the slurry to be treated, a porous ferromagnetic material contained in the space, and means to establish in the space a magnetic field by a closed magnetic circuit, the lines of force of which are substantially all contained within the said magnet space.Type: GrantFiled: May 6, 1975Date of Patent: March 14, 1978Inventors: Robin Roy Oder, Willie Jefferson Hatfield, Jr.
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Patent number: 4066537Abstract: Apparatus for the magnetic separation of feebly magnetic materials from a slurry comprises a number of matrix containers which are movable along a path between a number of pole pairs. The slurry passes through the matrix containers and is received in launders under the path, the non-magnetic constituents being collected in launders below the pole pairs and the feebly magnetic constituents in zones of low magnetic intensity. The matrix containers can be removed from the path individually for cleaning.Type: GrantFiled: March 15, 1976Date of Patent: January 3, 1978Inventor: Georg Josef Bernfeld
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Patent number: 4059510Abstract: A wet magnetic separator has a rotor formed on its periphery with a through annulus which is defined by two concentrically arranged non-magnetic walls and is divided into passages by radially-extending laminated spacer bars of a magnetic material. The rotor is surrounded by pole pieces which are energized in pairs to provide successive magnetic poles of opposite polarity around the rotor. The arrangement of the rotor and the magnetic poles is such that a magnetic field of maximum intensity is induced in the spacer bars when they are travelling between adjacent poles of opposite polarity.Type: GrantFiled: January 13, 1976Date of Patent: November 22, 1977Assignee: Readings of Lismore Pty. LimitedInventor: Hugh Thomas Reading
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Patent number: 4042492Abstract: A magnetic separator includes a channel, having a plurality of walls, one of which includes a vertically traveling conveyor belt; a magnetic coil is arranged on one channel wall for producing a high intensity magnetic field; inlet means is provided for introducing a carrier medium into the channel and an injecting means on a side channel wall opposite the magnetic coil and downstream of the inlet charges material into the medium. A doctoring member removes magnetic particles drawn to the conveyor belt and means spaced from said one wall removes non-magnetic particles and carrier medium.Type: GrantFiled: January 5, 1976Date of Patent: August 16, 1977Assignee: Klockner-Humboldt-Deutz AktiengesellschaftInventors: Hanns Decker, Roland Pfeiffer, Lothar Wenz, Horst Cordes
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Patent number: 4021367Abstract: A process for recovering reusable suspended metal catalyst with a pre-determined minimum particle size from a suspension of metal particles in a liquid phase by subjecting the suspension to a continuously moving magnetic field of a minimum intensity.Type: GrantFiled: October 28, 1975Date of Patent: May 3, 1977Assignees: Budapesti Muszaki Egyetem, Peti NitrogenmuvekInventors: Sandor Gal, Bela Eross, Erno Pungor, Geza Siposs, Adorjan Monostory, Jozsef Barlai, Margit Szeiler nee Nemeth
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Patent number: 4017385Abstract: A method and apparatus for separating magnetically susceptible particles from a mixture of magnetically susceptible particles and non-magnetic or less magnetically susceptible particles in which a stream containing the mixture in a fluidized condition is introduced under pressure or under gravity into one end of an arcuate separation channel having an inlet end and an outlet end and arcuate inner and outer walls and at least one connecting wall which confine the steam and constrain it to flow in a single unidirectional arcuate path along the channel in frictional contact with the inner and outer walls and with the connecting wall, the velocity of the stream and the frictional resistance to flow being such that the stream is subject to sufficient centrifugal force as it flows around the channel that there is produced in the channel a secondary circulation radially outwardly within the body of the stream and then radially inwardly, in which the stream during its passage around the channel is subjected to a radiType: GrantFiled: September 6, 1974Date of Patent: April 12, 1977Inventors: Peter Harlow Morton, Enrico Cohen, Jeremy Andrew Good
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Patent number: 4005008Abstract: Apparatus for effecting magnetic separation of magnetically attractable particles dispersed in a fluid carrier, as for example weakly magnetic discoloring contaminants dispersed in a clay slurry. The dispersion is passed through a ferromagnetic filamentatious matrix within a canister disposed in a magnetic field. The matrix is part of a magnetic separator system characterized by a separation parameter p, where p is a function of the geometry and magnetic and electrical properties of the separating apparatus; and of the rheological and magnetic properties of the dispersion. By determinately setting the controllable parameters associated with the aforementioned properties which effect p, a desired attenuation in the population of contaminant species is achieved. Optimized apparatus configurations are also disclosed, which configurations are based upon the discovered realtionships.Type: GrantFiled: July 25, 1975Date of Patent: January 25, 1977Assignee: J. M. Huber CorporationInventor: Robin R. Oder
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Patent number: 3994801Abstract: A method for magnetic separation of materials wherein the materials are ground to provide a mixture of fine particles of more- and less-magnetic materials which may include paramagnetic material and diamagnetic material. Discrete bodies of highly magnetizable material are introduced to a magnetic field of high intensity and thereby become a closely consolidated mass of bodies having interstitial pores extended through the mass in all directions. The mixed particles are caused to flow through the pores and the less-magnetic particles are separated from the more-magnetic particles and the mass of bodies in the magnetic field. The more-magnetic particles are separated from the bodies by moving the mass of bodies out of the magnetic field and by demagnetizing them so that they tumble freely and by washing or otherwise removing the particles from the bodies as they tumble after leaving the closely consolidated mass.Type: GrantFiled: December 9, 1974Date of Patent: November 30, 1976Assignee: Magnesep CorporationInventor: William A. Colburn
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Patent number: 3984309Abstract: A continuous flow magnetic particle separator and accompanying classification method is disclosed for ferromagnetic and paramagnetic particles. A magnetic field is generated, preferably by a coil or solenoid mounted interiorly of a cylindrically configured ferromagnetic conductor. The classification volume is located in a typically toroidal volume interior of the magnetic field. The field is typically confined by a ferromagnetic conductor where it passes externally of the classification or toroidal volume. The toroidal volume is positioned so that lines of magnetic intensity from the field extend transversely to toroidal volume at the flow from input to collectors. The classification volume has a large gap in the vicinity of the input and tapers to a smaller gap in the vicinity of the concentrate (or magnetic particle) and tailings (or non-magnetic particle) collectors. The concentrate collectors are immediately adjacent to both walls of the toroidal classification volume.Type: GrantFiled: September 27, 1974Date of Patent: October 5, 1976Inventors: James W. Allen, Joseph Iannicelli
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Patent number: 3980562Abstract: A magnetic separator is formed of a number of substantially parallel filter discs which are attached on a rotatable shaft extending radially therefrom with gaps between the discs. The discs are arranged to produce local magnetic field inhomogeneities in the gap between the discs. Stationary scraper means in the form of channel-like bodies of plastic material are arranged between each pair of discs with their free edges engaging the opposed faces of the discs. An endless belt is arranged to run in the channel for carrying out the material scraped from the discs to the outside.Type: GrantFiled: March 31, 1975Date of Patent: September 14, 1976Assignee: Allmanna Svenska Elektriska AktiebolagetInventor: Harald Nilsson
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Patent number: 3966590Abstract: A radial magnetic field gradient applied from an elongated central source is traversed parallel to the elongation by a turbulent flow of a slurried mixture of magnetic and nonmagnetic components in the presence of a force thereon opposing in direction the attractive force of the magnetic field upon the magnetic components whereby the respective components are separated by the disparate forces and the flow acts to continuously advance the separation and direct separated components toward related collecting stations.Type: GrantFiled: September 20, 1974Date of Patent: June 29, 1976Assignee: The United States of America as represented by the Secretary of the InteriorInventors: Roger W. Boom, Yehia M. Eyssa, John Sutton