Abstract: A magnetic separator having two rotating magnetic drums of opposite polarity which form between them a working air-gap, and having directionally magnetized block magnets on each side of both end-faces of the magnetic drums in a closed magnetic circuit, the magnets being connected together on one side of their poles, in pairs with unlike poles, by means of soft-iron parts, and being provided, on the other side, with pole shoes in which are mounted soft-iron parts designed as axes, the drums each being arranged in a housing comprising slide plates which are located in the working air-gap and which converge at the inlet and diverge at the outlet, the said drums comprising axial grooves distributed radially around their peripheries, or having peripheries of star-shaped cross section.

Abstract: PCT No. PCT/DE78/00010 Sec. 371 Date Apr. 4, 1979 Sec. 102(e) Date Mar. 19, 1979 PCT Filed July 7, 1978 PCT Pub. No. WO79/00085 PCT Pub. Date Feb. 22, 1979A magnetic separator having intersecting conveyor belts, in which the lower belt is used to transport the material to be separated, while the upper belt discharges the separated material, and in which a frame having a closed permanent-magnet system is arranged on each side of the discharge belt, each frame consisting of four directionally magnetized block magnets connected together in pairs by means of soft-iron parts, and of soft-iron intermediate parts connected together by soft-iron pole-pieces forming a working air-gap.

Abstract: An improved magnetic conveyor belt in which the belt support is a U-shaped iron rail having a plurality of permanent magnets disposed in the middle of its web between the two legs of the U with the spaces remaining between the magnets themselves and between the magnets and the legs of the rail filled to the level of the permanent magnets with a material which is magnetically non-conductive, thus completely filling in a portion of the U-shaped rail to a predetermined level upon which surface the conveyor rides either directly or through a metal sheet interposed between the top of the magnets and insulating material and the belt whereby the legs of the iron rail will be polarized in one direction and the center portion above the other pole of the magnets polarized in the other direction resulting in a magnetic field extending over a large volumetric space thereby permitting bulkier objects to be reliably carried on the conveyor belt.

Abstract: A magnetic roller conveyor for transporting magnetically conductive objects comprises at least two magnetically conductive rollers and at least two pairs of permanent magnets each located adjacent to and connected with the respective axial end portions of the respective rollers. The magnets of the same pair of magnets are polarized differently with respect to each other, whereas the magnets connected to the same roller are polarized identically with respect to each other. The rollers and the magnets connected thereto form together a magnetically closed path. The rollers are rotatably mounted on magnetically conductive shafts which latter also form a part of the above magnetically closed path. A second magnet system may be provided which is mirror-inverted with respect to the above-mentioned first magnetic system so that force of attraction of the rollers is doubled. Switching members are further provided operative for demagnetizing and subsequently remagnetizing of the rollers.

Abstract: Magnetic-technical systems useful in magnetic separators for separating magnetic materials from liquid or dry materials containing magnetic particles. The magnetic technical systems are characterized by possessing one magnetic circuit comprising at least two magnets and at least one operating air gap, and being further characterized by the fact that the circuit containing the magnets is closed and that within said circuit there is an operating gap in relation to two mild iron or steel parts which in each case are arranged between two interconnected homopolar magnets.

Abstract: A friction gear permanent magnetic entrainment means for rolling transmission of motion in combination with a magnetic-technical system having one magnetic circuit comprising at least two magnets and at least one operating air gap, including a frame being composed of symmetrically arranged permanent magnets and symmetrically arranged mild iron or steel parts, with the mild iron or steel parts arranged between analogous poles of the magnets forming central frontal surfaces drawn into the interior of the frame, which central frontal surfaces are opposing one another forming an operating air gap with opposite polarities in the direction of magnetizing.

Abstract: Permanent magnetic separators for liquids to be purified which comprise one or more ferromagnetic catch and discharge bodies for the impurities contained in the liquid, which impurities are removed by means of at least one stripper from the effective surface, wherein said catch and discharge body or bodies is polarized from the outside, said catch and discharge body or bodies consisting of two bowl-shaped rotary bodies placed opposite each other and separated by an operating gap, and at least one of said catch and discharge bodies is positioned rotatably between two pole shoes placed opposite each other of a closed magnetic system. Additional features and particular embodiments include, among others, juxtaposed pairs of the catch and discharge bodies.

Abstract: Magnetic separators for cleaning liquid, pasty and dry materials by separating magnetic from non-magnetic substances contained in said materials, wherein means are provided to form a flow-through housing with at least one separation roll arranged therein which magnetically cooperates with an antipole, said separation roll, including a shaft on which it is mounted for rotation, and said antipole are mild iron parts of at least one magnetic system with a closed magnetic circuit.

Abstract: Permanent magnetic separators for liquids to be purified which comprise one or more ferromagnetic catch and discharge bodies for the impurities contained in the liquid, which impurities are removed by means of at least one stripper from the effective adhesive surface, wherein said catch and discharge body or bodies is polarized from the outside, said catch and discharge body or bodies consisting of two bowl-shaped rotary bodies placed opposite each other and separated by an operating gap, and at least one of said catch and discharge bodies is positioned rotatably between two pole shoes placed opposite each other of at least one magnetic yoke. Additional features and particular embodiments include, among others, juxtaposed pairs of the catch and discharge bodies and switching units for effecting shorting of the magnetic lines of force.

Abstract: A magnetic system is mounted for rotation in a housing along the inner surface thereof. The housing is stationarily supported in a jacket having an inlet and outlet and defining with the outer surface of the housing a passage for a material containing magnetically attractable particles between the inlet and the outlet. As the material passes through the passage, the magnetically attractable particles are attracted to the outer surface of the housing and dragged along the same to a predetermined location.

Abstract: The device comprises a magnetic circuit having an air gap into which a mixture of magnetically attractable and magnetically non-attractable materials can be passed. The magnetic circuit includes a rotatably mounted separator roller comprised of magnetizable material, with the periphery of the roller being located adjacent to the air gap. The magnetic circuit further includes a permanent magnet arrangement located exteriorly of the separator roller and operative for establishing a flow of flux through the magnetic circuit and across the air gap and operates for magnetizing the separator roller by induction so that magnetically attractable material in a mixture entering the air gap will be segregated by the separator roller.