Abstract: The invention relates to a logistics system and to a method for selling goods, wherein within a display area, goods are presented; an individual PIN is allocated to each customer; goods selected by customers are conveyed to at least one intermediate storage area by way of a transport device; the goods belonging to a particular customer are identified by verifying the PIN and are conveyed to at least one storage area which is reserved for this customer; and after payment and collection from the storage area in the intermediate storage area the goods are handed over to the customer in a goods collection area. Known methods are associated with the disadvantage in that the customer can only select generic goods.

Abstract: According to the present invention, plastic waste mixture is first comminuted, and if required, subjected to magnetic separation and/or eddy-current separation, by which separable metals are removed. The comminuted plastic waste mixture is then mixed with a separation liquid in a mixing tank which has an outlet for heavy phase impurities. This suspension is directed to a hydrocyclone for a first separation procedure. The hydrocyclone is optimally adjusted in such a manner that any remaining unwanted heavy phase impurities together with the heavy phase undesirable plastics, such as the PVC fraction of the plastic waste mixture, is separated from the balance of the plastic waste materials as hydrocyclone underflow. The heavy underflow of the mixing tank and the hydrocyclone underflow may be further reprocessed separately or jointly.

Abstract: The present invention pertains to the separation of mixtures of plastics, contaminated with, among other things, mineral heavy materials such as e.g. sand or metal refuse. Separation occurs according to density in a separating liquid in the centrifugal field of the rotating suspension. The present invention provides the connection of a hydrocyclone before a separating centrifuge. The mineral heavy materials are separated in advance in the hydrocyclone and the plastic mixture is further separated in the centrifuge. Wear on components of the separating centrifuge caused by these heavy materials can be avoided, and in some applications a second separating stage at a higher separation density can be eliminated.

Abstract: An apparatus is provided for the wet-mechanical separation of solids within a parting liquid into floats and sinks according to their density which includes a container rotatable about an axis provided with at least one opening for the admission of said solids to be separated and at least one separate opening for the discharge of the sinks, the floats and the parting liquid. A screw conveyor for separating the solids is arranged in the container. The screw conveyor is rotatable about the container axis with one set of helices for engaging the floats and another set of helices for engaging the sinks. A diaphragm plate is arranged axially on the screw conveyor between the admission opening for the solids to be separated and the discharge opening for the sinks such that one part of the screw conveyor conveys the sinks to the sinks discharge opening with its helices and another part of the screw conveyor conveys the floats to the floats discharge opening with its helices.

Abstract: In a known magnet system, specifically for magnetic separators, having homogeneously magnetized magnet blocks arranged in circular ring shape, the magnet blocks have their magnetization directions aligned differently from one to another and established in accordance with a predetermined mathematical formula. While a magnetic field running almost uniformly over the whole region of the magnet system is thus produced, the magnet blocks are made trapezoidal in cross section and, because of the many distinct magnetization directions, require separate fabrication. Both the fabrication and the assembly of these magnet blocks are therefore relatively complicated and time-consuming. In accordance with the invention, however, the fabrication and the assembly of the magnet blocks into a magnet system are quite substantially simplified and improved by virtue of the fact that the magnet blocks (1) are made square in cross section.

Abstract: A magnetic separator comprising a rotatable drum including an axis of rotation and a periphery comprising a plurality of magnet blocks. The magnet blocks are mounted and arranged as circular rings about the axis of rotation. The ith magnet block is magnetized in a predetermined direction defined by .psi..sub.i =-n.rho..sub.i where n is a positive number and .phi..sub.i is an angle described by a line from the center of gravity of the ith block to the axis of rotation and a predetermine radius vector. The spacing between neighboring centers of gravity of the magnetic blocks, expressed as a sector angle, is smaller than or equal to about .pi./2 (n+1).

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 method and apparatus for measuring the height of the density layer in a material bed layered according to densities, such as in a jigging machine operation, utilizes a free-floating measuring body having a transmitter means embedded therein and a probe mechanism for monitoring the relative position of the body in the material bed. The measuring body is made of a material having a density equal to the relative densities of materials forming the separating line between two density levels and is able to move with the materials during the grading process. The probe mechanism is housed in a guide tube which extends in the direction of the density gradient through the material bed.

Abstract: An arcuate shaped magnetic system is housed in a fixed cryostat within a rotating drum. A slurry containing magnetizable particles is charged into an operating area defined by the magnetic system at the lower part of the drum and magnetic particles adhering to the drum are removed as the drum rotates the same to a discharge location. The cryostat has an outer wall which conforms to the shape of the drum and houses a sector-shaped refrigeration tank. The refrigeration tank has an arcuate wall section conforming to the shapes of the cryostat wall and the drum and is positioned in close proximity to the outer cryostat wall only in the operating area in order to minimize inward heat transfer.

Abstract: A magnetic separator, in particular a drum separator, includes a magnetic system having a plurality of magnets. Each of the magnets produces an open field directed toward a separation zone which, in a drum separator, extends axially of the drum outside of the surface of the drum. The magnets may include conductive coils, preferably superconducting coils, which are traversed in the same direction by current and which include an iron-free core. The average center-to-center spacing of the coils is a maximum of 25 times the spacing between the coils and the separating zone and is preferably in the range of 15:1 to 10:1. The coils are elliptical and have major and minor axes which decrease from the outermost coil winding to the innermost coil winding, with the distances between the windings being greater along the major axes than along the minor axes.This is a continuation of application Ser. No. 843,737, filed Oct. 19, 1977, now abandoned.

Abstract: A method and apparatus are disclosed for cleansing a matrix of a magnetic separator and more particularly a wet-magnetic separator having adherent magnetic material. The matrix is cleansed both with a liquid medium and an additional gaseous compressible medium. The introduction of the compressible medium is controlled in accordance with a measure of the adherent magnetic material present.

Abstract: A method for reducing the sulfur content of coal which involves an integrated, continuous process including the steps of grinding the coal in a dry state, activating the ground coal to increase substantially the magnetic susceptibility of the pyrite contained therein, and separating the thus activated pyrite magnetically from the remainder of the coal.

Abstract: 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.

Abstract: Magnetizable particles are separated from a sludge which includes fine-grained particles and the magnetizable particles suspended in a carrier by creating a laminar flow of the sludge over a surface which is disposed at an angle to the horizontal. The surface is included in a magnetic system which has a plurality of supra-conducting magnets with coils which are energizable to provide alternate north and south poles longitudinally and transversely of the surface. The supra-conducting magnets each have an end adjacent the surface and short-circuited opposite ends to amplify the magnetic force in the direction of the surface.

Abstract: 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.