EP1878505A1 - Process and device for the separation of fragments of liberated ferrous scrap from not liberated ferrous scrap fragments by means of a static magnet - Google Patents

Process and device for the separation of fragments of liberated ferrous scrap from not liberated ferrous scrap fragments by means of a static magnet Download PDF

Info

Publication number
EP1878505A1
EP1878505A1 EP06117130A EP06117130A EP1878505A1 EP 1878505 A1 EP1878505 A1 EP 1878505A1 EP 06117130 A EP06117130 A EP 06117130A EP 06117130 A EP06117130 A EP 06117130A EP 1878505 A1 EP1878505 A1 EP 1878505A1
Authority
EP
European Patent Office
Prior art keywords
magnet
fragments
liberated
scrap
belt
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP06117130A
Other languages
German (de)
French (fr)
Other versions
EP1878505B1 (en
Inventor
Peter Carlo Rem
Simon Peter Maria Berkhout
Otto Norbert Fraunholcz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Recycling Avenue
Technische Universiteit Delft
Original Assignee
Recycling Avenue
Technische Universiteit Delft
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
Priority to EP06117130A priority Critical patent/EP1878505B1/en
Priority to EP10155597A priority patent/EP2206558B1/en
Priority to DK06117130.2T priority patent/DK1878505T3/en
Priority to AT10155597T priority patent/ATE533560T1/en
Priority to DE602006014960T priority patent/DE602006014960D1/en
Application filed by Recycling Avenue, Technische Universiteit Delft filed Critical Recycling Avenue
Priority to ES06117130T priority patent/ES2346145T3/en
Priority to AT06117130T priority patent/ATE471213T1/en
Publication of EP1878505A1 publication Critical patent/EP1878505A1/en
Application granted granted Critical
Publication of EP1878505B1 publication Critical patent/EP1878505B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/16—Magnetic separation acting directly on the substance being separated with material carriers in the form of belts
    • B03C1/22—Magnetic separation acting directly on the substance being separated with material carriers in the form of belts with non-movable magnets

Definitions

  • the present invention relates to a process and device for the separation of fragments of liberated ferrous scrap from not liberated ferrous scrap fragments by means of a static magnet.
  • the present invention relates to the dramatic reduction of the copper content in liberated ferrous scrap in particular in steel scrap.
  • Steel scrap is produced, among others, from end-of-life consumer products, such as cars as well as electric and electronic appliances at car shredders and waste from energy plants.
  • liberated scrap means fragments which essentially do not contain materials other than iron and steel.
  • not liberated ferrous scrap refers to fragments containing other materials in particular copper.
  • ferrous scrap obtained from shedders contain both liberated and not liberated scrap. This "shredder steel scrap", obtained according to the prior art separation methods, is sold to steel manufacturers to be re-melted and processed into new steel products.
  • the threshold value of copper in steel scrap set by steelmakers has gone down from 0.25 wt-% to 0.2 wt-%.
  • the amount of copper containing parts in steel scrap has substantially risen, up to about 20 wt-%, as a result of design changes of durable consumer goods and passenger vehicles.
  • the liberated ferrous scrap fragments are separated from the not liberated ferrous scrap fragments by means of a static magnet wherein a mixture of said liberated ferrous and not liberated ferrous fragments is fed to a continuous conveyor belt which is driven around drums and wherein said magnetic is fixed in the drum distant from the feeding point.
  • Said magnet is attracting liberated ferromagnetic material towards the belt as it passes around the drum, which device comprising a plurality of magnet poles extending around the interior of the drum for substantially 180°, wherein the uppermost pole being positioned at an angle of at least 15° to the vertical through the axis of the drum in the direction of belt travel.
  • the speed of the conveyor belt may not exceed 500 feet per minute.
  • WO 88/05696 discloses a process for separating magnetic ore particles from non-magnetic particles using a short belt magnetic separator having a pulley head with axial pole permanent magnets located within said pulley head, said magnets being mounted in a fixed position within said pulley head during operation of said separator.
  • Said axial pole magnets within the pulley head are positioned so that said magnets extend along an arc beginning at a location spaced at least one degree beyond the point of tangency T of an upper surface of the belt with the pulley head.
  • the present invention relates to a process and device for the separation of liberated ferrous scrap fragments from not liberated ferrous scrap fragments by using a single dipole magnet rather than a plurality of magnets from the above disclosed prior art.
  • the present invention relates to a process for the separation of fragments of liberated ferrous scrap from not liberated ferrous scrap fragments by means of a static magnet, wherein a mixture of said liberated ferrous and not liberated ferrous fragments is fed onto a continuous conveyor belt which is driven around drums and wherein said magnet is fixed in the drum distant from the feeding point, which magnet is a single magnet, preferably a dipole magnet, having magnetic field lines in the separation zone which are predominantly parallel to the belt surface.
  • the invention also relates to a device for the separation of fragments of liberated ferrous scrap from not liberated ferrous scrap in a separation zone by means of a fixed magnet in the drum distant from the feeding point which device is provided with a first drum and a second drum and a continuous belt for the transportation of a mixture of liberated and not liberated scrap wherein said magnet is a dipole magnet.
  • Said magnet preferably a dipole magnet, is cylindrical and furthermore the position of said magnet in the drum is such that the magnetic field lines are predominantly parallel to the surface of said belt.
  • the copper content of the feed is 1.5 wt-%.
  • the parallel orientation of the magnetic field line gives the best result relating to a copper content of the recovered steel fraction, i.e. only about 0,18 wt-% copper versus iron recovery of about 82.9 wt-%.
  • the copper content of the copper-rich fraction obtained by the centrifugal forces is about 8.0 wt-% versus about 17.1 wt-% iron recovery in the parallel orientation of the magnetic field lines.
  • the Figure shows the preferred embodiment of the device 1 of the invention for the separation of fragments of liberated ferrous scrap from not liberated ferrous scrap.
  • the liberated and not liberated scrap mixture is fed to the continuous conveyor belt 4 at drum 2 for the transportation of said scrap mixture with a belt speed of 2 to 5 m/s, preferably 3 to 4 m/s, and most preferably 3.5 m/s to the separation zone 6.
  • a belt speed of 2 to 5 m/s, preferably 3 to 4 m/s, and most preferably 3.5 m/s to the separation zone 6.
  • the magnetic field strength should be in balance with the speed of the conveyor belt.
  • the magnetic field strength is 0.10-0.15 Tesla at the belt surface at a belt speed of 3.5 m/s. At a lower belt speed the optimum magnetic field strength will be lower whereas at a higher speed the magnetic field strength should be higher than 0.10-0.15 Tesla.
  • the magnetic field strength is proportional to the belt speed.
  • the Figure further shows the separation zone 6 and some of the magnetic field lines 7.
  • the arrow 8 shows the belt travel direction.
  • the magnet preferably a dipole magnet, which is furthermore preferably a cylindrical magnet, 5 is fixed in the drum 3.
  • the capital letters N and S refer to north and south of the dipole magnet.
  • N is in the down and S is in the upper section, provided that the magnetic field lines are predominantly parallel to the surface of said belt.

Landscapes

  • Processing Of Solid Wastes (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)

Abstract

The invention relates to a process and device for the separation of fragments of liberated ferrous scrap from not liberated ferrous scrap fragments by means of a static magnet, wherein a mixture of said liberated ferrous and not liberated ferrous fragments is fed onto a continuous conveyor belt which is driven around drums and wherein said magnet is fixed in the drum distant from the feeding point, wherein a magnet is used which is preferably a dipole magnet having magnetic field lines in the separation zone predominantly parallel to the belt surface.

Description

  • The present invention relates to a process and device for the separation of fragments of liberated ferrous scrap from not liberated ferrous scrap fragments by means of a static magnet.
  • Basically, the present invention relates to the dramatic reduction of the copper content in liberated ferrous scrap in particular in steel scrap.
  • Steel scrap is produced, among others, from end-of-life consumer products, such as cars as well as electric and electronic appliances at car shredders and waste from energy plants.
  • When these products are shredded in order to recycle the steel, scrap particles are passed through a magnetic separator to recover the liberated ferrous or steel particles. The term liberated scrap means fragments which essentially do not contain materials other than iron and steel. The term not liberated ferrous scrap refers to fragments containing other materials in particular copper. Furthermore, ferrous scrap obtained from shedders contain both liberated and not liberated scrap. This "shredder steel scrap", obtained according to the prior art separation methods, is sold to steel manufacturers to be re-melted and processed into new steel products.
  • To date, steelmakers require the copper content of steel scrap be less than 0.2 wt-%, preferably less than 0.1 wt-%. However, shredder ferrous or steel scrap as currently produced by the magnetic separation at shredder yards often contains more copper, up to 2 wt-%. This is because end-of-life consumer products contain an increasing amount of copper containing parts, in which copper and steel are intimately integrated, and therefore not liberated, such as electric motor armatures and transformers. The average copper content of such parts is about 20 wt-%. Hence, there is a need to dramatically reduce the copper content of such liberated ferrous or steel scrap prior to re-melting.
  • During the last decade, the threshold value of copper in steel scrap set by steelmakers has gone down from 0.25 wt-% to 0.2 wt-%. In the same period, the amount of copper containing parts in steel scrap has substantially risen, up to about 20 wt-%, as a result of design changes of durable consumer goods and passenger vehicles.
  • The removal of copper from steel scrap can be achieved metallurgically, by hand sorting or by physical separation. The metallurgical method is very costly. On the other hand, despite its obvious disadvantages, hand sorting is a widely applied method today. However, the costs of hand sorting rise sharply with both throughput and copper content.
  • To date, two proposed methods to reduce the copper content of liberated ferrous material or steel scrap by physical separation means are known. One method is to further fragmentize the scrap so that the copper is liberated from the steel and can be separated by conventional magnetic separation devices. At current prices, this route costs approx. 20 euro/ton scrap and is very energy-intensive.
  • A second method, which eliminates the need of an additional shredding step, was described by Peace in GB 1.602.279 .
  • According to this document, the liberated ferrous scrap fragments are separated from the not liberated ferrous scrap fragments by means of a static magnet wherein a mixture of said liberated ferrous and not liberated ferrous fragments is fed to a continuous conveyor belt which is driven around drums and wherein said magnetic is fixed in the drum distant from the feeding point.
  • Said magnet is attracting liberated ferromagnetic material towards the belt as it passes around the drum, which device comprising a plurality of magnet poles extending around the interior of the drum for substantially 180°, wherein the uppermost pole being positioned at an angle of at least 15° to the vertical through the axis of the drum in the direction of belt travel.
  • The speed of the conveyor belt may not exceed 500 feet per minute.
  • WO 88/05696 discloses a process for separating magnetic ore particles from non-magnetic particles using a short belt magnetic separator having a pulley head with axial pole permanent magnets located within said pulley head, said magnets being mounted in a fixed position within said pulley head during operation of said separator.
  • Said axial pole magnets within the pulley head are positioned so that said magnets extend along an arc beginning at a location spaced at least one degree beyond the point of tangency T of an upper surface of the belt with the pulley head.
  • Now, the present invention relates to a process and device for the separation of liberated ferrous scrap fragments from not liberated ferrous scrap fragments by using a single dipole magnet rather than a plurality of magnets from the above disclosed prior art.
  • It appeared surprisingly that the magnetic field geometry in the separation zone is important for the separation process.
  • Accordingly, the present invention relates to a process for the separation of fragments of liberated ferrous scrap from not liberated ferrous scrap fragments by means of a static magnet, wherein a mixture of said liberated ferrous and not liberated ferrous fragments is fed onto a continuous conveyor belt which is driven around drums and wherein said magnet is fixed in the drum distant from the feeding point, which magnet is a single magnet, preferably a dipole magnet, having magnetic field lines in the separation zone which are predominantly parallel to the belt surface.
  • It is surprising that when the orientation of the magnetic field lines is predominantly parallel to the belt surface in a separation zone, a substantial better separation is obtained compared to any other field line orientation.
  • Furthermore, satisfactory results are obtained by the use of a cylindrical dipole magnet.
  • The invention also relates to a device for the separation of fragments of liberated ferrous scrap from not liberated ferrous scrap in a separation zone by means of a fixed magnet in the drum distant from the feeding point which device is provided with a first drum and a second drum and a continuous belt for the transportation of a mixture of liberated and not liberated scrap wherein said magnet is a dipole magnet.
  • Said magnet, preferably a dipole magnet, is cylindrical and furthermore the position of said magnet in the drum is such that the magnetic field lines are predominantly parallel to the surface of said belt.
  • Reference is made to the table below wherein examples are given from magnetic field line orientation to belt surface. In the table, mention is made of a low-copper fraction and a copper-rich fraction.
  • It is noted that the copper content of the feed is 1.5 wt-%. TABLE
    magnetic field low-copper fraction copper-rich fraction
    line orientation copper content steel recovery copper content steel recovery
    to belt surface [wt-%] [wt-%] [wt-%] [wt-%]
    parallel 0.18 82.9 8.0 17.1
    perpendicular 0.40 85.0 8.1 15.0
    intermediate 0.55 77.6 5.0 22.4
  • It appears from the above table that there are used three magnetic field line orientations, i.e. parallel, perpendicular and intermediate.
  • As it can be seen from the table, the parallel orientation of the magnetic field line gives the best result relating to a copper content of the recovered steel fraction, i.e. only about 0,18 wt-% copper versus iron recovery of about 82.9 wt-%.
  • The copper content of the copper-rich fraction obtained by the centrifugal forces is about 8.0 wt-% versus about 17.1 wt-% iron recovery in the parallel orientation of the magnetic field lines.
  • From the table it can be seen that the perpendicular and intermediate magnetic field line orientation do result in a copper content in the low-copper fraction of 0.40 and 0.55 wt-% respectively.
  • From the above table it clearly follows that the parallel magnetic field line orientation is preferred.
  • Furthermore, the present invention will be illustrated by the enclosed Figure.
  • The Figure shows the preferred embodiment of the device 1 of the invention for the separation of fragments of liberated ferrous scrap from not liberated ferrous scrap.
  • The liberated and not liberated scrap mixture is fed to the continuous conveyor belt 4 at drum 2 for the transportation of said scrap mixture with a belt speed of 2 to 5 m/s, preferably 3 to 4 m/s, and most preferably 3.5 m/s to the separation zone 6. By means of centrifugal forces the copper-rich fraction will be separated from the liberated ferrous scrap fraction, whereas the liberated ferromagnetic fragments carried around the drum 3 will leave the conveyor belt at a later stage.
  • In order to obtain a more satisfactory separation according to the invention the magnetic field strength should be in balance with the speed of the conveyor belt. Usually the magnetic field strength is 0.10-0.15 Tesla at the belt surface at a belt speed of 3.5 m/s. At a lower belt speed the optimum magnetic field strength will be lower whereas at a higher speed the magnetic field strength should be higher than 0.10-0.15 Tesla. Generally the magnetic field strength is proportional to the belt speed.
  • The Figure further shows the separation zone 6 and some of the magnetic field lines 7. The arrow 8 shows the belt travel direction.
  • The magnet, preferably a dipole magnet, which is furthermore preferably a cylindrical magnet, 5 is fixed in the drum 3. The capital letters N and S refer to north and south of the dipole magnet. For an appropriate working the north and south of the dipole magnet may be interchanged, so that N is in the down and S is in the upper section, provided that the magnetic field lines are predominantly parallel to the surface of said belt.
  • It should be readily appreciated by those of ordinary skill in the art relative to this invention that numerous variations and permutations are possible while keeping within the intent of this invention, and that only the language of the following claims, including equivalents thereto, should be used to gauge the scope of the invention and the rights and title to the inventor therefore.

Claims (8)

  1. A process for the separation of fragments of liberated ferrous scrap from not liberated ferrous scrap fragments by means of a static magnet, wherein a mixture of said liberated ferrous and not liberated ferrous fragments is fed onto a continuous conveyor belt which is driven around drums and wherein said magnet is fixed in the drum distant from the feeding point, characterized in that a single magnet is used having magnetic field lines in the separation zone predominantly parallel to the belt surface.
  2. The process according to claim 1, characterized in that said magnet is a dipole magnet.
  3. The process according to claim 2, characterized in that said dipole magnet is a cylindrical dipole magnet.
  4. The process according to claims 1-3, characterized in that the belt speed is 2 to 5 m/s, preferably 3 to 4 m/s, most preferably 3.5 m/s.
  5. The process of claims 1-4, characterized in that said dipole magnet has a magnetic field strength of about 0.10 - 0.15 Tesla at the belt surface at a belt speed of about 3.5 m/s.
  6. A device (1) for the separation of fragments of liberated ferrous scrap from not liberated ferrous scrap in a separation zone (6) by means of a fixed magnet (5) in the drum (3) distant from the feeding point which device is provided with a first drum (2) and a second drum (3) and a continuous belt (4) for the transportation of the scrap mixture, characterized in that said magnet (5) is a magnet having magnetic field lines (7) in the separation zone (6) which are predominantly parallel to the surface of said belt (4).
  7. Device (1) according to claim 6, characterized in that the magnet is a dipole magnet.
  8. The device according to claim 7, characterized in that said dipole magnet (5) is cylindrical and has a magnetic field strength of 0.10 - 0.15 Tesla at the belt surface at a belt speed of about 3.5 m/s.
EP06117130A 2006-07-13 2006-07-13 Process and device for the separation of fragments of liberated ferrous scrap from not liberated ferrous scrap fragments by means of a static magnet Not-in-force EP1878505B1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP10155597A EP2206558B1 (en) 2006-07-13 2006-07-13 Process and device for the separation of fragments of liberated ferrous scrap from not liberated ferrous scrap fragments by means of a static magnet
DK06117130.2T DK1878505T3 (en) 2006-07-13 2006-07-13 Method and apparatus for separating released ferrous scrap fragments from non-released ferrous scrap fragments by means of a static magnet
AT10155597T ATE533560T1 (en) 2006-07-13 2006-07-13 METHOD AND DEVICE FOR SEPARATING FREED NON-FERROUS METAL PARTICLES FROM FREED FERROUS METAL PARTICLES USING A STATIC MAGNET
DE602006014960T DE602006014960D1 (en) 2006-07-13 2006-07-13 Method and apparatus for separating liberated non-ferrous metal particles from liberated ferrous metal particles by means of a static magnet
EP06117130A EP1878505B1 (en) 2006-07-13 2006-07-13 Process and device for the separation of fragments of liberated ferrous scrap from not liberated ferrous scrap fragments by means of a static magnet
ES06117130T ES2346145T3 (en) 2006-07-13 2006-07-13 PROCESS AND DEVICE FOR THE SEPARATION OF FRAGMENTS OF FERROUS WASTE FREE FROM FRAGMENTS OF FERROID WASTE NOT RELEASED BY A STATIC MAGNET.
AT06117130T ATE471213T1 (en) 2006-07-13 2006-07-13 METHOD AND DEVICE FOR SEPARATING FREED NON-FERROUS METAL PARTICLES FROM FREED FERROUS METAL PARTICLES USING A STATIC MAGNET

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06117130A EP1878505B1 (en) 2006-07-13 2006-07-13 Process and device for the separation of fragments of liberated ferrous scrap from not liberated ferrous scrap fragments by means of a static magnet

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP10155597.7 Division-Into 2010-03-05

Publications (2)

Publication Number Publication Date
EP1878505A1 true EP1878505A1 (en) 2008-01-16
EP1878505B1 EP1878505B1 (en) 2010-06-16

Family

ID=37460045

Family Applications (2)

Application Number Title Priority Date Filing Date
EP10155597A Not-in-force EP2206558B1 (en) 2006-07-13 2006-07-13 Process and device for the separation of fragments of liberated ferrous scrap from not liberated ferrous scrap fragments by means of a static magnet
EP06117130A Not-in-force EP1878505B1 (en) 2006-07-13 2006-07-13 Process and device for the separation of fragments of liberated ferrous scrap from not liberated ferrous scrap fragments by means of a static magnet

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP10155597A Not-in-force EP2206558B1 (en) 2006-07-13 2006-07-13 Process and device for the separation of fragments of liberated ferrous scrap from not liberated ferrous scrap fragments by means of a static magnet

Country Status (5)

Country Link
EP (2) EP2206558B1 (en)
AT (2) ATE471213T1 (en)
DE (1) DE602006014960D1 (en)
DK (1) DK1878505T3 (en)
ES (1) ES2346145T3 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010090517A1 (en) 2009-02-03 2010-08-12 Monsanto Holland B.V. Enriching the seed quality of a batch of seeds
NL2002736C2 (en) * 2009-04-09 2010-10-12 Univ Delft Tech Method for separating magnetic pieces of material.
WO2010117273A1 (en) 2009-04-08 2010-10-14 Technische Universiteit Delft Method and apparatus for separating a non-ferous metal-comprising fraction from ferrous scrap
US8381913B2 (en) 2008-02-27 2013-02-26 Technische Universiteit Delft Method and apparatus for separating parts, in particular seeds, having different densities

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106238205A (en) * 2016-08-09 2016-12-21 宿州市威菱耐火材料有限责任公司 A kind of magnetic separator

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2690263A (en) * 1950-05-12 1954-09-28 Electromagnets Ltd Magnetic separator
DE1051752B (en) * 1957-05-27 1959-03-05 Gerd Rayhrer Dr Ing Magnetic separator of iron parts from a material flow
US3057477A (en) 1961-10-24 1962-10-09 Rappaport Maximiliano Pill sorting apparatus
GB1602279A (en) 1978-05-23 1981-11-11 British Steel Corp Magnetic separation
WO1988005696A1 (en) 1987-01-30 1988-08-11 Usx Engineers And Consultants, Inc. Separation by belt-type magnetic separator
EP0455948A1 (en) 1990-05-10 1991-11-13 Lindemann Maschinenfabrik GmbH Process and apparatus for the separation of, in particular weakly magnetisable, materials from a mixture of solids

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2690263A (en) * 1950-05-12 1954-09-28 Electromagnets Ltd Magnetic separator
DE1051752B (en) * 1957-05-27 1959-03-05 Gerd Rayhrer Dr Ing Magnetic separator of iron parts from a material flow
US3057477A (en) 1961-10-24 1962-10-09 Rappaport Maximiliano Pill sorting apparatus
GB1602279A (en) 1978-05-23 1981-11-11 British Steel Corp Magnetic separation
WO1988005696A1 (en) 1987-01-30 1988-08-11 Usx Engineers And Consultants, Inc. Separation by belt-type magnetic separator
EP0455948A1 (en) 1990-05-10 1991-11-13 Lindemann Maschinenfabrik GmbH Process and apparatus for the separation of, in particular weakly magnetisable, materials from a mixture of solids

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8381913B2 (en) 2008-02-27 2013-02-26 Technische Universiteit Delft Method and apparatus for separating parts, in particular seeds, having different densities
US8418855B2 (en) 2008-02-27 2013-04-16 Technische Universiteit Delft Method and apparatus for the separation of solid particles having different densities
WO2010090517A1 (en) 2009-02-03 2010-08-12 Monsanto Holland B.V. Enriching the seed quality of a batch of seeds
WO2010117273A1 (en) 2009-04-08 2010-10-14 Technische Universiteit Delft Method and apparatus for separating a non-ferous metal-comprising fraction from ferrous scrap
NL2002736C2 (en) * 2009-04-09 2010-10-12 Univ Delft Tech Method for separating magnetic pieces of material.
WO2010117271A1 (en) 2009-04-09 2010-10-14 Technische Universiteit Delft Use of an apparatus for separating magnetic pieces of material
US8678194B2 (en) 2009-04-09 2014-03-25 Technische Universiteit Delft Use of an apparatus for separating magnetic pieces of material

Also Published As

Publication number Publication date
EP2206558A1 (en) 2010-07-14
EP2206558B1 (en) 2011-11-16
ATE471213T1 (en) 2010-07-15
ES2346145T3 (en) 2010-10-11
EP1878505B1 (en) 2010-06-16
ATE533560T1 (en) 2011-12-15
DK1878505T3 (en) 2010-09-27
DE602006014960D1 (en) 2010-07-29

Similar Documents

Publication Publication Date Title
EP1878505A1 (en) Process and device for the separation of fragments of liberated ferrous scrap from not liberated ferrous scrap fragments by means of a static magnet
CN102294297B (en) Magnetic suspension beneficiation combined method for recycling copper from copper melting converter slag
US8678194B2 (en) Use of an apparatus for separating magnetic pieces of material
CN201676747U (en) Belt type deferrization machine
CN102553707A (en) Process for separating lean-magnetite fine ore
CN101422752A (en) Method for reducing the level of reselection tailings
EP1431464B1 (en) Method for recycling of a counterweight
CN112791848B (en) Method for reducing ilmenite flotation difficulty in process of recycling ilmenite from iron ore dressing tailings
US8627961B2 (en) Eddy current separator
CN1887432A (en) Magnetic separator with adjustable magnetic field strength
KR20210060774A (en) Nonferrous metal screening system using eddy current.
US11834728B2 (en) Method and system of reducing non-ferrous metal content of scrap steel
CN104722399A (en) Magnetic separator for separating impurities from rare earth permanent magnetic material
CN209317903U (en) The bored slag drum belt magnetic separator of heat
US20160024612A1 (en) Method And Device For Obtaining Pure, Additive-Free Scrap Iron From A Mixture Of Comminuted Scrap Metal
JP2007124841A (en) Recycling method for motor
CN201295640Y (en) Three-extrusion strong force permanent magnetic roller type magnetic separator
US4883584A (en) Process of separating special steel components from lump shredder scrap
CN204769113U (en) Magnet separator of impurity among separation tombarthite magnetically hard material
CN2751893Y (en) Bipolar deironing device
WO2005017217A3 (en) Recycling process for steel works coarse sludge or dusts using gravimetric concentration
CN220573727U (en) Eddy current separator
Rem et al. Process and device for the separation of fragments of liberated ferrous scrap from not liberated ferrous scrap fragments by means of a static magnet
CN102439180A (en) Method and apparatus for separating a non-ferous metal-comprising fraction from ferrous scrap
CN108283988A (en) Stage grinding magnetic weight flow processing mixed type iron ore technique

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

17P Request for examination filed

Effective date: 20080225

17Q First examination report despatched

Effective date: 20080424

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 602006014960

Country of ref document: DE

Date of ref document: 20100729

Kind code of ref document: P

REG Reference to a national code

Ref country code: NL

Ref legal event code: T3

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2346145

Country of ref document: ES

Kind code of ref document: T3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100616

LTIE Lt: invalidation of european patent or patent extension

Effective date: 20100616

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100616

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100616

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100616

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100616

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100616

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100917

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100616

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101018

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100616

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100616

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100731

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101016

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100616

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100731

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100731

26N No opposition filed

Effective date: 20110317

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602006014960

Country of ref document: DE

Effective date: 20110316

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100713

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DK

Payment date: 20110801

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 20120727

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100616

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101217

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20120731

Year of fee payment: 7

Ref country code: SE

Payment date: 20120731

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20120703

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20120829

Year of fee payment: 7

Ref country code: BE

Payment date: 20120831

Year of fee payment: 7

Ref country code: FR

Payment date: 20120814

Year of fee payment: 7

Ref country code: IT

Payment date: 20120725

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20121001

Year of fee payment: 7

Ref country code: NL

Payment date: 20120727

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20120725

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100916

BERE Be: lapsed

Owner name: TECHNISCHE UNIVERSITEIT DELFT

Effective date: 20130731

Owner name: RECYCLING AVENUE

Effective date: 20130731

REG Reference to a national code

Ref country code: NL

Ref legal event code: V1

Effective date: 20140201

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

Effective date: 20130731

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 471213

Country of ref document: AT

Kind code of ref document: T

Effective date: 20130713

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20130713

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602006014960

Country of ref document: DE

Effective date: 20140201

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20140331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130713

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130731

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140201

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140201

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130714

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130713

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130713

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130731

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20140909

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130714

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130713

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130713