EP0550728B1 - Process and device for sorting mixtures of waste - Google Patents

Process and device for sorting mixtures of waste Download PDF

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Publication number
EP0550728B1
EP0550728B1 EP92916038A EP92916038A EP0550728B1 EP 0550728 B1 EP0550728 B1 EP 0550728B1 EP 92916038 A EP92916038 A EP 92916038A EP 92916038 A EP92916038 A EP 92916038A EP 0550728 B1 EP0550728 B1 EP 0550728B1
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EP
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Prior art keywords
waste
objects
signal processor
characteristic features
waves
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EP92916038A
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German (de)
French (fr)
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EP0550728A1 (en
Inventor
Dieter Kaiser
Franz Wintrich
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RWE Entsorgung AG
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RWE Entsorgung AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
    • B07B13/003—Separation of articles by differences in their geometrical form or by difference in their physical properties, e.g. elasticity, compressibility, hardness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/34—Sorting according to other particular properties
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S209/00—Classifying, separating, and assorting solids
    • Y10S209/939—Video scanning

Definitions

  • the present invention relates to a method for sorting waste mixtures by irradiating the waste objects with electromagnetic waves, recording the waves arriving from the irradiated waste object in a signal processor for identifying the waste objects and forwarding signals from the signal processor to a pneumatic separation device which sorts out the identified waste object .
  • This collection produces a mixture of materials such as foils, cups, bottles and foams made of plastic, cardboard packaging made of composite materials for liquid foods and metal packaging materials, e.g. tinplate and aluminum.
  • a well-known example from the prior art is the AKW process, according to which heavy plastics such as polystyrene and polyvinyl chloride in hydrocyclones are separated from the light fraction consisting of polyethylene and polypropylene (AKW-Apparat + Maschinen GmbH, Georg-Schiffer-Strasse 70, 8452 Hirschau).
  • EP 0 439 674 A1 discloses a device for sorting waste which is detected by a sensor which extends over the width of the conveyor belt and which reacts to ultrasound, infrared and visible light. At least one further conveyor belt is arranged parallel to the conveyor belt. A movable gripper robot detects identified objects. A conveyor belt is assigned to each gripper robot responsible for a specific waste location.
  • DE 35 20 486 A1 discloses a method and a device for separating plastic waste from waste, by means of which largely pure plastics can be recovered.
  • unsorted plastic waste is transported on a transport line on an optical recording device, e.g. a video camera, which is connected to a memory for identifying the various plastic parts.
  • Branches, switches or the like are arranged downstream on the transport line and, depending on the identified plastic parts, release feeds to individual intermediate collecting containers for collecting plastic parts of the same type.
  • objects are sorted from a mixture of objects in such a way that the objects are identified by a sensor and these are transported in free fall by air flow from air nozzles into various containers.
  • the applicant has now surprisingly succeeded in reliably and economically carrying out the separation of individual waste components or waste objects by a process, characterized in that characteristic features of the waste objects which can be detected by light wave radiation and the external shape, namely bottles, cups, tubes -, cubic shapes, foil shapes as well as color, lettering, product names, company or manufacturer names and trademarks are exposed to lightwave radiation, that the objects are scanned with a video camera to record these characteristic features, which lightwave radiation picks up and starts from the objects Takes an image of the objects, which contains the characteristic features, that the waste objects are identified on the basis of these characteristic features by an electronic signal processor for processing these characteristic features, that a signal from the video camera is transmitted to the electronic signal processor which has stored the data relating to the characteristic features, the electronic signal processor responding to the signals arriving from the video camera, that the signals arriving from the video camera are processed by the electronic signal processor on the basis of the stored data and determines the material from which the waste objects are made that a signal is transmitted from the electronic signal processor to a pneumatic separator, the pneu
  • the solution to the stated problem is achieved in that, by means of the method and the device according to the invention, characteristic features of the waste objects, which can be detected by light wave irradiation, are evaluated in such a way that the identification of the waste object is possible, after which a pneumatic separation device is started which will sort out the identified object.
  • the characteristic features include the external shape of the object, namely bottle, mug, tube, cubic shapes, foil shapes as well as color, lettering, product names, company or manufacturer names and trademarks.
  • the electronic signal processor is not only able to identify and sort waste objects according to the above-mentioned features, but is also able to evaluate the features based on stored data in such a way that an assignment to the material forming the waste object is possible, for example from a Cup shape with other features, such as the manufacturer's name and the product name, to determine that it is a polystyrene object.
  • the signal processor passes the information on to a pneumatic separation device, which brings about the sorting out of the identified object.
  • the waste object must first be exposed to radiation with electromagnetic waves.
  • the waves reflected from or penetrating the waste object are first recorded by a video camera. This device forwards the signals to the actual signal processor.
  • the waves used to identify the waste object are generally or predominantly reflected rays that occur during irradiation or those that first penetrated the object. Of less importance are those waves that arise from a secondary radiation, e.g. Heat rays, which an object that is initially heated then emits as an IR radiation transmitter.
  • visible light IR rays and UV rays are used.
  • a pneumatically operating separation device is used.
  • the waste object is removed from a moving belt by an air jet, the object being directed in a certain direction.
  • waste mixture is distributed sufficiently. This can preferably be done on a moving conveyor belt or rotating plate, but other devices according to the prior art can also be used.
  • an arrangement according to the invention is shown as an example.
  • 1) represents the conveyor belt, 2) a waste object, 3) is a video camera, 4) a signal processor and 5) a separation device.

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  • Sorting Of Articles (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Processing Of Solid Wastes (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Paper (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

PCT No. PCT/DE92/00627 Sec. 371 Date Jun. 4, 1993 Sec. 102(e) Date Jun. 4, 1993 PCT Filed Jul. 27, 1992 PCT Pub. No. WO93/02813 PCT Pub. Date Feb. 18, 1993The present invention relates to a process to sort waste mixtures by irradiating the waste objects with electromagnetic and/or acoustic waves, by picking up the waves emanating from each irradiated waste object in a signal processor to identify it, and by transmitting signals from the signal processor to a separator which sorts out the identified waste object.

Description

Die vorliegende Erfindung betrifft ein Verfahren zum Sortieren von Abfallgemischen durch Bestrahlen der Abfallobjekte mit elektromagnetischen Wellen, Aufnahme der von dem bestrahlten Abfallobjekt ankommenden Wellen in einem Signalprozessor zur Identifizierung der Abfallobjekte und Weiterleitung von Signalen aus dem Signalprozessor zu einer pneumatischen Abtrennvorrichtung, die das identifizierte Abfallobjekt aussortiert.The present invention relates to a method for sorting waste mixtures by irradiating the waste objects with electromagnetic waves, recording the waves arriving from the irradiated waste object in a signal processor for identifying the waste objects and forwarding signals from the signal processor to a pneumatic separation device which sorts out the identified waste object .

Die Rückgewinnung wiederverwendbarer Materialien aus Abfällen gewinnt in Industrie und Haushaltungen wachsende Bedeutung. Hier sei insbesondere das Duale System genannt, nach dem Verpackungsmaterialien und -erzeugnisse in besonderen Wertstofftonnen in den Haushalten getrennt gesammelt werden, wobei die beteiligte Wirtschaft garantiert, das gesammelte Material vollständig abzunehmen und einer stofflichen Verwertung zuzuführen.The recovery of reusable materials from waste is becoming increasingly important in industry and households. The dual system is particularly worth mentioning here, according to which packaging materials and products are collected separately in special recycling bins in the households, with the participating economy guaranteeing that the collected material is completely removed and used for recycling.

Bei dieser Sammlung fällt ein Gemisch von Materialien wie Folien, Bechern, Flaschen und Schaumstoffen aus Kunststoff an, Kartonverpackungen aus Verbundwerkstoffen für flüssige Nahrungsmittel und Metallverpackungsmaterialien, beispielsweise aus Weißblech und Aluminium.This collection produces a mixture of materials such as foils, cups, bottles and foams made of plastic, cardboard packaging made of composite materials for liquid foods and metal packaging materials, e.g. tinplate and aluminum.

Da bei der Wiederverwertung um so qualitativ hochwertigere Produkte erzeugt werden können, je sortenreiner das rückgewonnene Material ist, ist die Weiterentwicklung der Sortiertechnik ein entscheidendes Kriterium zum erfolgreichen Einsatz des Dualen Systems.Since the higher the quality of the recovered material, the more high-quality products can be produced during recycling, the further development of the sorting technology is a decisive criterion for the successful use of the dual system.

Obgleich die Sortiertechnik intensiv weiterentwickelt wird, ist es bisher nicht möglich, beispielsweise aus einem Gemisch chemisch verwandter Kunststoffe wie Polyethylen und Polypropylen die einzelnen Komponenten auszusortieren. Ein zusätzliches Problem sind die in den Kunststoffen enthaltenen Füllstoffe und Additive, welche zu beträchtlichen Veränderungen der Eigenschaften des reinen Kunststoffs führen.Although the sorting technology is being developed intensively, it has not been possible to sort out the individual components from a mixture of chemically related plastics such as polyethylene and polypropylene, for example. An additional problem is the fillers and additives contained in the plastics, which lead to considerable changes in the properties of the pure plastic.

Ein bekanntes Beispiel aus dem Stand der Technik ist das AKW-Verfahren, nach dem schwere Kunststoffe wie Polystyrol und Polyvinylchlorid in Hydrozyklonen von der aus Polyethylen und Polypropylen bestehenden Leichtfraktion getrennt werden (AKW-Apparate + Verfahren GmbH, Georg-Schiffer-Straße 70, 8452 Hirschau).A well-known example from the prior art is the AKW process, according to which heavy plastics such as polystyrene and polyvinyl chloride in hydrocyclones are separated from the light fraction consisting of polyethylene and polypropylene (AKW-Apparat + Verfahren GmbH, Georg-Schiffer-Strasse 70, 8452 Hirschau).

In der EP 0 439 674 A1 ist eine Vorrichtung zum Sortieren von Abfällen offenbart, die durch einen Sensor erfaßt werden, der sich über die Breite des Transportbandes erstreckt und auf Ultraschall, Infrarot und sichtbares Licht reagiert.
Parallel zu dem Transportband ist mindestens ein weiteres Transportband angeordnet. Identifizierte Objekte werden von einem verfahrbaren Greifroboter erfaßt. Jedem für eine bestimmte Abfallsorte zuständigen Greifroboter ist ein Transportband zugeordnet.EP 0 439 674 A1 discloses a device for sorting waste which is detected by a sensor which extends over the width of the conveyor belt and which reacts to ultrasound, infrared and visible light.
At least one further conveyor belt is arranged parallel to the conveyor belt. A movable gripper robot detects identified objects. A conveyor belt is assigned to each gripper robot responsible for a specific waste location.

In der DE 35 20 486 A1 werden ein Verfahren und eine Vorrichtung zur Trennung von Kunststoffabfällen aus Müll offenbart, durch die weitgehend sortenreine Kunststoffe zurückgewonnen werden können.DE 35 20 486 A1 discloses a method and a device for separating plastic waste from waste, by means of which largely pure plastics can be recovered.

Hierzu wird unsortierter Kunststoffmüll auf einer Transportstraße an einem optischen Erfassungsgerät, wie z.B. einer Videokamera, vorbeigeführt, das mit einem Speicher zur Identifizierung der verschiedenen Kunststoffteile verbunden ist. Stromabwärts sind an der Transportstraße Abzweigungen, Weichen oder dergleichen angeordnet, die gesteuert in Abhängigkeit von den identifizierten Kunststoffteilen Zuführungen zu einzelnen Zwischensammelbehältern zum Sammeln von Kunststoffteilen gleicher Art freigeben.For this purpose, unsorted plastic waste is transported on a transport line on an optical recording device, e.g. a video camera, which is connected to a memory for identifying the various plastic parts. Branches, switches or the like are arranged downstream on the transport line and, depending on the identified plastic parts, release feeds to individual intermediate collecting containers for collecting plastic parts of the same type.

Nach US-A 3,179,247 werden Objekte aus einem Objektgemisch in der Weise sortiert, daß über einen Sensor die Objekte identifiziert werden und diese im freien Fall durch einen Luftstrom aus Luftdüsen in verschiedene Behälter befördert werden.According to US Pat. No. 3,179,247, objects are sorted from a mixture of objects in such a way that the objects are identified by a sensor and these are transported in free fall by air flow from air nozzles into various containers.

Der Anmelderin ist es nunmehr überraschend gelungen, die Trennung einzelner Abfallbestandteile bzw. Abfallobjekte durch ein Verfahren zuverlässig und wirtschaftlich durchzuführen, dadurch gekennzeichnet, daß charakteristische Merkmale der Abfallobjekte, welche durch Lichtwellenbestrahlung erfaßbar sind und die äußere Form, nämlich Flaschen-, Becher-, Tuben-, kubische Formen, Folienformen sowie Farbe, Schriftzüge, Produktnamen, Firmen- bzw. Herstellernamen und Warenzeichen umfassen, einer Lichtwellenbestrahlung ausgesetzt werden, daß die Objekte mit einer Videokamera zum Erfassen dieser charakteristischen Merkmale abgetastet werden, welche Lichtwellenbestrahlung ausgehend von den Objekten aufnimmt und ein Bild der Objekte aufnimmt, das die charakteristischen Merkmale enthält, daß die Abfallobjekte aufgrund dieser charakteristischen Merkmale durch einen elektronischen Signalprozessor zum Verarbeiten dieser charakteristischen Merkmale identifiziert werden, daß ein Signal von der Videokamera auf den elektronischen Signalprozessor übertragen wird, welcher die charakteristischen Merkmale betreffenden Daten gespeichert hat, wobei der elektronische Signalprozessor auf die von der Videokamera ankommenden Signale reagiert, daß die von der Videokamera ankommenden Signale von dem elektronischen Signalprozessor auf der Grundlage der gespeicherten Daten verarbeitet werden und das Material, aus dem die Abfallobjekte bestehen, bestimmt wird, daß ein Signal von dem elektronischen Signalprozessor zu einer pneumatischen Trennvorrichtung übertragen wird, wobei die pneumatische Trennvorrichtung auf das Signal des elektronischen Signalprozessors reagiert und daß die pneumatische Trennvorrichtung Luftdüsen zum Entfernen der Objekte von dem Transportband aufweist, wobei die unterschiedlichen Objekttypen in bestimmte Richtungen geblasen werden.The applicant has now surprisingly succeeded in reliably and economically carrying out the separation of individual waste components or waste objects by a process, characterized in that characteristic features of the waste objects which can be detected by light wave radiation and the external shape, namely bottles, cups, tubes -, cubic shapes, foil shapes as well as color, lettering, product names, company or manufacturer names and trademarks are exposed to lightwave radiation, that the objects are scanned with a video camera to record these characteristic features, which lightwave radiation picks up and starts from the objects Takes an image of the objects, which contains the characteristic features, that the waste objects are identified on the basis of these characteristic features by an electronic signal processor for processing these characteristic features, that a signal from the video camera is transmitted to the electronic signal processor which has stored the data relating to the characteristic features, the electronic signal processor responding to the signals arriving from the video camera, that the signals arriving from the video camera are processed by the electronic signal processor on the basis of the stored data and determines the material from which the waste objects are made that a signal is transmitted from the electronic signal processor to a pneumatic separator, the pneumatic separator responding to the signal from the electronic signal processor, and the pneumatic separator has air nozzles for removing the objects from the conveyor belt, the different object types being blown in certain directions become.

Die Lösung der gestellten Aufgabe wird dadurch erreicht, daß durch das erfindungsgemäße Verfahren und die erfindungsgemäße Vorrichtung charakteristische Merkmale der Abfallobjekte, welche durch Lichtwellenbestrahlung erfaßbar sind, in der Weise ausgewertet werden, daß die Identifizierung des Abfallobjektes möglich ist, wonach eine pneumatische Abtrennvorrichtung in Gang gesetzt wird, welche das identifizierte Objekt aussortiert. Die charakteristischen Merkmale umfassen die äußere Form des Objektes, nämlich Flaschen-, Becher-, Tuben-, kubische Formen, Folienformen sowie Farbe, Schriftzüge, Produktnamen, Firmen- bzw. Herstellernamen und Warenzeichen.The solution to the stated problem is achieved in that, by means of the method and the device according to the invention, characteristic features of the waste objects, which can be detected by light wave irradiation, are evaluated in such a way that the identification of the waste object is possible, after which a pneumatic separation device is started which will sort out the identified object. The characteristic features include the external shape of the object, namely bottle, mug, tube, cubic shapes, foil shapes as well as color, lettering, product names, company or manufacturer names and trademarks.

Der elektronische Signalprozessor ist nicht nur in der Lage, Abfallobjekte nach den genannten Merkmalen zu identifizieren und auszusortieren, sondern ist zusätzlich in der Lage, aufgrund gespeicherter Daten die Merkmale so auszuwerten, daß eine Zuordnung zu dem das Abfallobjekt bildenden Material möglich ist, beispielsweise aus einer Becherform ggf. mit weiteren Merkmalen, wie den Herstellernamen und den Produktnamen, zu ermitteln, daß es sich um ein Objekt aus Polystyrol handelt. Nach erfolgter Identifizierung gibt der Signalprozessor die Information an eine pneumatische Abtrennvorrichtung weiter, welche die Aussortierung des identifizierten Objektes herbeiführt.The electronic signal processor is not only able to identify and sort waste objects according to the above-mentioned features, but is also able to evaluate the features based on stored data in such a way that an assignment to the material forming the waste object is possible, for example from a Cup shape with other features, such as the manufacturer's name and the product name, to determine that it is a polystyrene object. After identification has taken place, the signal processor passes the information on to a pneumatic separation device, which brings about the sorting out of the identified object.

Im erfindungsgemäßen Verfahren muß das Abfallobjekt zunächst einer Bestrahlung mit elektromagnetischen Wellen ausgesetzt werden.In the method according to the invention, the waste object must first be exposed to radiation with electromagnetic waves.

Die vom Abfallobjekt reflektierten oder dieses durchdringenden Wellen werden zunächst durch eine Videokamera, aufgenommen. Dieses Gerät leitet die Signale weiter an den eigentlichen Signalprozessor. Die zur Abfallobjektidentifizierung verwendeten Wellen sind im allgemeinen bzw. überwiegend bei der Bestrahlung auftretende reflektierte Strahlen oder solche, die zunächst das Objekt durchdrungen haben. Von geringerer Bedeutung sind solche Wellen, die durch eine sekundäre Ausstrahlung entstehen, wie z.B. Wärmestrahlen, die ein zunächst erwärmtes Objekt anschließend als IR-Strahlen-Sender aussendet.The waves reflected from or penetrating the waste object are first recorded by a video camera. This device forwards the signals to the actual signal processor. The waves used to identify the waste object are generally or predominantly reflected rays that occur during irradiation or those that first penetrated the object. Of less importance are those waves that arise from a secondary radiation, e.g. Heat rays, which an object that is initially heated then emits as an IR radiation transmitter.

Erfindungsgemäß werden sichtbares Licht, IR-Strahlen und UV-Strahlen verwendet.According to the invention, visible light, IR rays and UV rays are used.

Erfindungsgemäß wird eine pneumatisch arbeitende Abtrennvorrichtung eingesetzt.According to the invention, a pneumatically operating separation device is used.

Durch eine Luftstrahl erfolgt die Entfernung des Abfallobjektes von einem sich bewegenden Band, wobei das Objekt in eine bestimmte Richtung gelenkt wird.The waste object is removed from a moving belt by an air jet, the object being directed in a certain direction.

Zu einer vollständigen Abtrennung ist es erforderlich, daß das Abfallgemisch ausreichend verteilt wird. Dies kann bevorzugt auf einem sich bewegenden Transportband oder sich drehenden Teller erfolgen, jedoch andere Geräte nach dem Stand der Technik sind ebenfalls verwendbar.For a complete separation it is necessary that the waste mixture is distributed sufficiently. This can preferably be done on a moving conveyor belt or rotating plate, but other devices according to the prior art can also be used.

Strahlungsquellen und signalverarbeitende Vorrichtungen sind dem Fachmann bekannt. Sie brauchen daher nicht näher erläutert werden.Radiation sources and signal processing devices are known to the person skilled in the art. They therefore do not need to be explained in more detail.

In der Figur ist beispielhaft eine erfindungsgemäße Anordnung wiedergegeben. 1) stellt das Transportband dar, 2) ein Abfallobjekt, 3) ist eine Videokamera, 4) ein Signalprozessor und 5) eine Abtrennvorrichtung.In the figure, an arrangement according to the invention is shown as an example. 1) represents the conveyor belt, 2) a waste object, 3) is a video camera, 4) a signal processor and 5) a separation device.

Claims (8)

  1. Process for sorting a waste mixture after having sufficiently distributed the waste mixture on a conveyor belt, characterized
    in that characteristic features of the waste objects, which are recordable by irradiation with light waves, and which embrace the outer shape, namely bottle-, beaker-, tube-, cubic shapes, foil shapes as well as colors, marks in writing, product names, company respectively producer names and trade marks, are exposed to irradiation with light waves,
    in that the objects are scanned by a video camera, for recording these characteristic features, which collects irradiation by light waves, emanating from the objects and takes a picture of the objects,
    in that the waste objects, based on these characteristic features, are identified by an electronic signal processor suited for processing these characteristic features,
    in that a signal is transferred from the video camera to an electronic signal processor, which has stored data concerning the characteristic features, whereby the electronic signal processor responds to signals arriving from the video camera,
    in that the signals arriving from the video camera are processed by the electronic signal processor, based on the data stored, and in that the materials, the waste objects consist of, are determined,
    in that a signal is transferred from the electronic signal processor to a pneumatic sorting device, whereby the pneumatic sorting device responds to the signal of the electronic signal processor,
    and in that the pneumatic sorting device is equipped with air jets for the removal of the objects from the conveyor belt, whereby different types of objects are blown into specific directions.
  2. Process according to claim 1, characterized in that the waves applied, are visible light and/or IR-rays and/or UV-rays.
  3. Process according to claims 1 and 2, characterized in that the waste mixture is distributed in such a way, that the waste objects are recorded by the waves applied, as completely as possible.
  4. Process according to claim 3, characterized in that the distribution takes place on a conveyor belt.
  5. Process according to claim 3, characterized in that the distribution takes place on a distributing tray.
  6. Device for sorting waste mixtures, characterized in that the device comprises a source of irradiation for electromagnetic waves, a video camera for recording the waves arriving from the waste object by recording characteristic features of the waste objects, which are recordable by irradiation with light waves, embracing the outer shape, namely bottle-, beaker-, tube-, cubic shapes, foil shapes as well as colors, marks in writing, product names, company respectively producer names and trade marks, a signal processor for processing these characteristic features of the waste objects in order to identify the materials and a pneumatic sorting device for sorting the waste objects identified, which is controlled by signals emanating from the signal processor and which is equipped with air jets.
  7. Device according to claim 6, characterized in that the device is equipped with a conveyor belt for the distribution of the waste mixture.
  8. Application of the device according to claims 6 and 7 for sorting waste mixtures.
EP92916038A 1991-07-29 1992-07-27 Process and device for sorting mixtures of waste Expired - Lifetime EP0550728B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4125045 1991-07-29
DE4125045A DE4125045A1 (en) 1991-07-29 1991-07-29 METHOD FOR SORTING WASTE MIXTURES
PCT/DE1992/000627 WO1993002813A1 (en) 1991-07-29 1992-07-27 Process for sorting mixtures of waste

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EP0550728A1 EP0550728A1 (en) 1993-07-14
EP0550728B1 true EP0550728B1 (en) 1996-04-17

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EP92916038A Expired - Lifetime EP0550728B1 (en) 1991-07-29 1992-07-27 Process and device for sorting mixtures of waste

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US (1) US5615778A (en)
EP (1) EP0550728B1 (en)
JP (1) JPH06506152A (en)
AT (1) ATE136818T1 (en)
CA (1) CA2092805A1 (en)
DE (2) DE4125045A1 (en)
ES (1) ES2042476T1 (en)
MX (1) MX9204426A (en)
WO (1) WO1993002813A1 (en)

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DE4241262C1 (en) * 1992-12-08 1994-06-23 Rwe Entsorgung Ag Segregation of objects from object mixt. - involves mixt. placed on vibrating device on which it is moved towards conveyor unit with simultaneous segregation of objects
DE4241250C2 (en) * 1992-12-08 1996-04-11 Rwe Entsorgung Ag Method for identifying objects and device for carrying out the method
DE4241990C2 (en) * 1992-12-12 1997-02-06 Rwe Entsorgung Ag System for recognizing and sorting waste objects
DE4305562A1 (en) * 1993-02-24 1994-09-01 Bodenseewerk Geraetetech Method and device for sorting packaging wastes
DE4314396A1 (en) * 1993-04-30 1994-11-03 Robert Prof Dr Ing Massen Optical sorting of plastics
DE4317513A1 (en) * 1993-05-26 1994-12-01 Select Ingenieurgesellschaft F Method and device for selective separation of bodies and use of the method
DE4321447C2 (en) * 1993-06-29 1996-03-14 Bfi Entsorgungstech Device for separating material mixtures with adjustable selectivity
DE4323391C2 (en) * 1993-07-13 1996-03-14 Bfi Entsorgungstech Device for sorting out large objects from material mixtures and method using the device
DE4343058A1 (en) * 1993-12-19 1995-06-22 Robert Prof Dr Ing Massen Multiple sensor camera for quality control
DE4401207A1 (en) * 1994-01-18 1995-07-20 Tobias Fey Identification of plastics packaging to facilitate recycling
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DE59206047D1 (en) 1996-05-23
EP0550728A1 (en) 1993-07-14
US5615778A (en) 1997-04-01
CA2092805A1 (en) 1993-01-30
JPH06506152A (en) 1994-07-14
ATE136818T1 (en) 1996-05-15

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