DK168813B1 - Method and plant for separating metal pieces from a transport stream of particulate material - Google Patents

Method and plant for separating metal pieces from a transport stream of particulate material Download PDF

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Publication number
DK168813B1
DK168813B1 DK077792A DK77792A DK168813B1 DK 168813 B1 DK168813 B1 DK 168813B1 DK 077792 A DK077792 A DK 077792A DK 77792 A DK77792 A DK 77792A DK 168813 B1 DK168813 B1 DK 168813B1
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DK
Denmark
Prior art keywords
metal
conveyor
metal pieces
detector
pieces
Prior art date
Application number
DK077792A
Other languages
Danish (da)
Other versions
DK77792D0 (en
DK77792A (en
Inventor
Jan Folsberg
Original Assignee
Smidth & Co As F L
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Smidth & Co As F L filed Critical Smidth & Co As F L
Priority to DK077792A priority Critical patent/DK168813B1/en
Publication of DK77792D0 publication Critical patent/DK77792D0/en
Priority to DE4317250A priority patent/DE4317250C2/en
Publication of DK77792A publication Critical patent/DK77792A/en
Application granted granted Critical
Publication of DK168813B1 publication Critical patent/DK168813B1/en

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Classifications

    • 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
    • B07C5/344—Sorting according to other particular properties according to electric or electromagnetic properties
    • 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
    • B07C2501/00—Sorting according to a characteristic or feature of the articles or material to be sorted
    • B07C2501/0036—Sorting out metallic particles
    • 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
    • B07C2501/00—Sorting according to a characteristic or feature of the articles or material to be sorted
    • B07C2501/0054—Sorting of waste or refuse

Landscapes

  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Sorting Of Articles (AREA)
  • Crushing And Grinding (AREA)
  • Processing Of Solid Wastes (AREA)
  • Control Of Conveyors (AREA)

Description

i DK 168813 B1in DK 168813 B1

Den foreliggende opfindelse angår en fremgangsmåde til udskillelse af metalstykker fra en transportstrøm af partikelformet materiale, ved hvilken fremgangsmåde materialestrømmen kontrolleres for indhold af metalstykker 5 i en første kontrolstation og de afsnit af strømmen, som ikke indeholder metalstykker, ledes videre til næste forarbejdningstrin, medens de afsnit af strømmen, som indeholder metalstykker, ledes til en opsamlingsstation. Opfindelsen angår endvidere et anlæg til udøvelse af fremgangsmåden.The present invention relates to a method for separating metal pieces from a transport stream of particulate material, wherein the process of controlling the material flow for the content of metal pieces 5 in a first control station and the sections of the stream containing no metal pieces are passed to the next processing step sections of the stream containing pieces of metal are routed to a collection station. The invention further relates to a plant for carrying out the method.

1010

Ved formaling af materiale i f.eks. vertikalmøller eller valsepresser, der bl.a. anvendes til cementfremstilling, er det vigtigt, at materialet ikke indeholder større stykker metal, idet sådanne kan medføre havari på maledelene.When milling material in e.g. vertical mills or roller presses, including used for cement manufacture, it is important that the material does not contain larger pieces of metal, as these can cause breakdowns on the paint parts.

1515

Derfor er der på mange cementfremstillingsanlæg installeret en metaldetektor før materialeindgangen i formalingsenheden, for således at sikre en metalfri fødning. Materialet ledes således gennem en metaldetektor, der i 20 tilfælde af detektering af metal omstyrer et skiftespjæld, således at det metalholdige materiale ledes til en spildbeholder .Therefore, many metal fabrication plants have a metal detector installed before the material entrance in the grinding unit, thus ensuring a metal-free feed. Thus, the material is passed through a metal detector which, in 20 cases of metal detection, reverses a shift damper so that the metal-containing material is directed to a waste container.

Et sådant system fungerer tilfredsstillende for anlæg med 25 små gennemløbsmængder, hvor materialespildet, der ender i spildbeholderen ligeledes er lille.Such a system works satisfactorily for systems with 25 small throughput volumes, where the material waste ending up in the waste container is also small.

Ved større anlæg med kapaciteter på over 200-600 ton/time vil der derimod være tale om meget store spildmængder, hvor 30 hver enkelt detektering af metal kan medføre, at op til 0,5-1 ton materiale omstyres til spildbeholderen via skiftespjældet. Den samlede mængde materiale, der omstyres pr. dag kan således beløbe sig til adskillige ton, hvilket rent håndteringsmæssigt er meget arbejdskrævende at fjerne.On the other hand, for large plants with capacities of more than 200-600 tonnes / hour, there will be very large waste volumes, where 30 each detection of metal can cause up to 0.5-1 tonnes of material to be diverted to the waste container via the shift damper. The total amount of material being diverted per Thus, a day can amount to several tons, which is purely labor-intensive to remove.

35 I praksis ser man derfor ofte, at metaldetektoren er udkoblet med en deraf øget risiko for havari.35 In practice, therefore, it is often seen that the metal detector is switched off with an increased risk of accident.

DK 168813 B1 2DK 168813 B1 2

Formålet med den foreliggende opfindelse er at angive en fremgangsmåde såvel som et anlæg til udskillelse af metalstykker fra en transportstrøm af partikelformet materiale, hvor ovennævnte ulemper undgås.The object of the present invention is to provide a method as well as a system for separating metal pieces from a transport stream of particulate material, whereby the above disadvantages are avoided.

55

Dette opnås ifølge opfindelsen ved en fremgangsmåde af den i indledningen angivne art, og som er kendetegnet ved, at materialet fra opsamlingsstationen ledes videre og kontrolleres for indhold af metalstykker i en anden kontrolstation 10 og de strømafsnit, som indeholder metalstykker, ledes bort.This is achieved according to the invention by a method of the kind set out in the introduction, characterized in that the material from the collection station is passed on and checked for the content of metal pieces in another control station 10 and the stream sections containing metal pieces are diverted.

Herved opnås det, at den mængde materiale, der i første omgang er blevet frasorteret på grund af metalindhold, kan reduceres og derved reduceres arbejdet med at fjerne 15 spildmaterialet tilsvarende.In this way, it is achieved that the amount of material that has initially been separated due to metal content can be reduced, thereby reducing the work of removing the waste material accordingly.

Ifølge opfindelsen foretrækkes det, at de strømafsnit, der kommer fra den anden kontrolstation, og som ikke indeholder metalstykker, returneres til den første kontrolstation 20 eller til forarbejdningstrinet.According to the invention, it is preferred that the power portions coming from the second control station and which do not contain metal pieces are returned to the first control station 20 or to the processing step.

Effekten ved opfindelsen kan forstærkes ved, at materialet fra opsamlingsstationen udtrækkes herfra med en relativ lille volumenstrøm, således at volumenstrømmen gennem den 25 anden kontois tat ion er mindre end volumenstrømmen gennem den første kontrolstation, idet der derved kontrolleres på en relativ lille massestrøm, således at spildet ved kontrollering for metal reduceres.The effect of the invention can be enhanced by extracting the material from the collection station with a relatively small volume flow, such that the volume flow through the second account is less than the volume flow through the first control station, thereby controlling for a relatively small mass flow, so that the waste of control for metal is reduced.

30 For at undgå overfyldning af opsamlingsstationen kan volumenstrømmen af materialet, der udtrækkes herfra, styres som funktion af materialeniveauet i opsamlingsstationen.30 To avoid overfilling of the collection station, the volume flow of the material extracted from it can be controlled as a function of the material level in the collection station.

Opfindelsen skal i det følgende forklares nærmere under 35 henvisning til tegningen, der er skematisk og hvis eneste figur viser et eksempel på et anlæg til udøvelse af 3 DK 168813 B1 fremgangsmåden ifølge opfindelsen.The invention will be explained in more detail below with reference to the drawing which is schematic and whose sole figure shows an example of a plant for carrying out the method according to the invention.

Det i figuren viste anlæg omfatter en første metaldetektor 1, en anden metaldetektor 3, transportbånd 5 og 7, et 5 første skiftespjæld 9, et andet skiftespjæld 11, en opsamlingsbeholder 13, et udtræks apparat 15 i form af et bånd eller en vibrationsrende, en transportør eller spildbeholder 17, en elevator 19 for såvel nyfødning som returfødning og en vertikalmølle 21.The plant shown in the figure comprises a first metal detector 1, a second metal detector 3, conveyor belts 5 and 7, a first shift damper 9, a second shift damper 11, a collecting container 13, a pull-out device 15 in the form of a belt or vibration ring, a conveyor or waste container 17, an elevator 19 for both newborn and return feeding, and a vertical mill 21.

1010

Nyt materiale såvel som returmateriale transporteres via elevatoren 19 til båndet 5 og ledes forbi metaldetektoren 1. Sålænge metaldetektoren 1 ikke detekterer noget metal i materialet, så ledes dette via skiftespjældet 9 til 15 vertikalmøllen 21. Hvis metaldetektoren 1 derimod detekterer metal i materialet, så omstyres materialet for en mindre periode via skiftespjældet 9 til opsamlingsbeholderen 13. Materialet i opsamlingsbeholderen 13 udtrækkes ved hjælp af apparatet 15 og aflægges i et tyndt lag på 20 båndet 7, der leder materialet forbi metaldetektoren 3. Sålænge metaldetektoren 3 ikke detekterer noget metal i materialet, så ledes dette via skiftespjældet 11 til elevatoren 19 for returnering til båndet 5. Hvis og når metaldetektoren 3 detekterer metal i materialet, så 25 omstyres materialet for en periode via skiftespjældet 11 til transportøren eller spildbeholderen 17.New material as well as return material is transported via the elevator 19 to the belt 5 and passed by the metal detector 1. As long as the metal detector 1 does not detect any metal in the material, this is conducted via the shift damper 9 to 15 the vertical mill 21. On the other hand, the metal detector 1 detects metal in the material. the material for a minor period via the shift damper 9 to the collecting container 13. The material in the collecting container 13 is extracted by means of the apparatus 15 and deposited in a thin layer of the band 7 which passes the material past the metal detector 3. As long as the metal detector 3 does not detect any metal in the material, then this is conducted via the shift damper 11 to the elevator 19 for return to the belt 5. If and when the metal detector 3 detects metal in the material, then the material is redirected for a period via the shift damper 11 to the conveyor or waste container 17.

30 3530 35

Claims (9)

1. Fremgangsmåde til udskillelse af metalstykker fra en transportstrøm af partikelformet materiale, ved hvilken 5 fremgangsmåde materialestrømmen kontrolleres for indhold af metalstykker i en første kontrolstation (1) og de afsnit af strømmen, som ikke indeholder metalstykker, ledes videre til næste forarbejdningstrin (21), medens de afsnit af strømmen, som indeholder metalstykker, ledes til en 10 opsamlingsstation (13), kendetegnet ved, at materialet fra opsamlingsstationen (13) ledes videre i en jævn strøm og kontrolleres for indhold af metalstykker i en anden kontrolstation (3) og de strømafsnit, som indeholder metalstykker, ledes bort. -15A method for separating metal pieces from a particulate material transport stream, wherein the method stream checks the material flow for the contents of metal pieces in a first control station (1) and passes those sections of the stream which do not contain metal pieces to the next processing step (21). , while the sections of the stream containing metal pieces are directed to a collection station (13), characterized in that the material from the collection station (13) is passed on in a steady stream and controlled for the content of metal pieces in another control station (3) and the power sections containing pieces of metal are routed away. -15 2. Fremgangsmåde ifølge krav 1, kendetegnet ved, at de strømafsnit, der kommer fra den anden kontrolstation (3), og som ikke indeholder metalstykker, returneres til den første kontrolstation (1) eller til forar- 20 bejdiiingstrinet (21).Method according to claim 1, characterized in that the stream sections coming from the second control station (3) and which do not contain pieces of metal are returned to the first control station (1) or to the processing step (21). 3. Fremgangsmåde ifølge krav 1, kendetegnet v e d, at materialet i opsamlingsstationen (13) udtrækkes herfra med en relativ lille volumenstrøm, således at 25 volumenstrømmen gennem den anden kontrolstation (3) er mindre end volumenstrømmen gennem den første kontrolstation (1).Method according to claim 1, characterized in that the material in the collection station (13) is extracted therefrom with a relatively small volume flow, such that the volume flow through the second control station (3) is less than the volume flow through the first control station (1). 4. Fremgangsmåde ifølge krav 1 til 3, kendeteg - n 30 et v e d, at volumenstrømmen af materialet, der udtrækkes fra opsamlingsstationen (13), styres som funktion af materialeniveauet i opsamlingsstationen (13).Method according to claims 1 to 3, characterized in that the volume flow of the material extracted from the collection station (13) is controlled as a function of the material level in the collection station (13). 5. Anlæg til udøvelse af fremgangsmåden ifølge opfindelsen 35 og omfattende en første metaldetektor (1), et første transportør (5) til at bringe materialestrømmen forbi 5 DK 168813 B1 detektoren (1), et skiftespjæld (9) styret af detektoren (1) til at fordele materialestrømmen i afhængighed af indhold af metalstykker, samt en opsamlingsbeholder (13) for materiale med metalstykker, kendetegnet 5 v e d, at det yderligere omfatter en anden metaldetektor (3) i forbindelse med en anden transportør (7) til at bringe materiale fra opsamlingsbeholderen (13) forbi detektoren (3) og til et skiftespjæld (11), der er styret af detektoren (3) til at fordele materialestrømmen i 10 afhængighed af indhold af metalstykker, en tredje transportør (19) til returnering af den metalfri materialedel og en fjerde transportør (17) til bortledning af den metalholdige materialedel.An apparatus for carrying out the method of the invention 35 comprising a first metal detector (1), a first conveyor (5) for passing the material flow past the detector (1), a shift damper (9) controlled by the detector (1) for distributing the flow of material depending on the content of metal pieces, and a collection container (13) for material with metal pieces, characterized in that it further comprises another metal detector (3) in connection with another conveyor (7) for bringing material from the collecting container (13) past the detector (3) and to a shift damper (11) controlled by the detector (3) for distributing the flow of material into 10 depending on the content of metal pieces, a third conveyor (19) for returning the metal-free material part, and a fourth conveyor (17) for discharging the metal-containing material part. 6. Anlæg ifølge krav 5, kendetegnet ved, at det endvidere omfatter et udtræksapparat (15) for aflæggelse af materialet på transportøren (7).Installation according to claim 5, characterized in that it further comprises an extraction apparatus (15) for depositing the material on the conveyor (7). 7. Anlæg ifølge krav 5 eller 6, kendetegnet 20 ved, at transportørerne (5, 7) udgøres af transportbånd.Installation according to claim 5 or 6, characterized in that the conveyors (5, 7) are conveyor belts. 8. Anlæg ifølge krav 5, kendetegnet ved, at transportøren (19) udgøres af en elevator.Installation according to claim 5, characterized in that the conveyor (19) is an elevator. 9. Anlæg ifølge krav 6, kendetegnet ved, at udtræksapparatet (15) udgøres af et transportbånd eller en vibrationsrende. 30 35System according to claim 6, characterized in that the extraction apparatus (15) is constituted by a conveyor belt or a vibration channel. 30 35
DK077792A 1992-06-12 1992-06-12 Method and plant for separating metal pieces from a transport stream of particulate material DK168813B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DK077792A DK168813B1 (en) 1992-06-12 1992-06-12 Method and plant for separating metal pieces from a transport stream of particulate material
DE4317250A DE4317250C2 (en) 1992-06-12 1993-05-24 Method and device for separating metallic objects from a supply flow of particulate material

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK077792A DK168813B1 (en) 1992-06-12 1992-06-12 Method and plant for separating metal pieces from a transport stream of particulate material
DK77792 1992-06-12

Publications (3)

Publication Number Publication Date
DK77792D0 DK77792D0 (en) 1992-06-12
DK77792A DK77792A (en) 1993-12-13
DK168813B1 true DK168813B1 (en) 1994-06-20

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DK077792A DK168813B1 (en) 1992-06-12 1992-06-12 Method and plant for separating metal pieces from a transport stream of particulate material

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DE (1) DE4317250C2 (en)
DK (1) DK168813B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10030221A1 (en) 2000-06-20 2002-01-03 Giesecke & Devrient Gmbh Device for processing sheet material
DE102007058604A1 (en) * 2007-12-03 2009-06-04 Putzmeister Concrete Pumps Gmbh Slurry i.e. sewage sludge, conveying device, has pipeline with measuring section made of electrically non-conductive material, and metal detector arranged at section for detecting metal parts contained in slurry

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4697709A (en) * 1985-09-03 1987-10-06 Delta Technology Corporation Sorter for agricultural products
DE3924566A1 (en) * 1989-07-25 1991-02-07 Hamos Elektronik Arrangement for separating metal particles from granular bulk material - has deflector sealing delivery channel to pass flow to collector when metal is detected
DE4029202A1 (en) * 1990-09-14 1992-03-19 Buehler Ag METHOD FOR SORTING PARTICLES OF A BULK GOOD AND DEVICES THEREFOR

Also Published As

Publication number Publication date
DE4317250C2 (en) 1997-05-07
DK77792D0 (en) 1992-06-12
DE4317250A1 (en) 1994-01-20
DK77792A (en) 1993-12-13

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Date Code Title Description
B1 Patent granted (law 1993)
PBP Patent lapsed