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WO2001064357A1 - Separating device - Google Patents

Separating device Download PDF

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Publication number
WO2001064357A1
WO2001064357A1 PCT/NL2001/000121 NL0100121W WO0164357A1 WO 2001064357 A1 WO2001064357 A1 WO 2001064357A1 NL 0100121 W NL0100121 W NL 0100121W WO 0164357 A1 WO0164357 A1 WO 0164357A1
Authority
WO
WIPO (PCT)
Prior art keywords
roll
sorting device
spikes
sorting
approximately
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.)
Ceased
Application number
PCT/NL2001/000121
Other languages
French (fr)
Inventor
Tako Pieter Rinze De Jong
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.)
Technische Universiteit Delft
Original Assignee
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
Application filed by Technische Universiteit Delft filed Critical Technische Universiteit Delft
Priority to AU2001236199A priority Critical patent/AU2001236199A1/en
Publication of WO2001064357A1 publication Critical patent/WO2001064357A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • B07B13/04—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices according to size
    • B07B13/05—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices according to size using material mover cooperating with retainer, deflector or discharger
    • 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

Definitions

  • the invention relates to a sorting device suitable for sorting wire from a waste stream, comprising a body that moves when in use, and provided with spikes or similar projections.
  • Such a sorting device is known from practice.
  • the prior art sorting device is provided with a sloping conveyor belt covered with spikes.
  • the waste stream more specifically being scrap metal, is supplied on the belt so that the spikes can comb out the wire from the scrap while allowing the remaining material to roll down.
  • the prior art sorting device has not proved, to be satisfactory. It is desirable to sort in par- ticular the wires from the waste stream as they often have a disrupting effect on the further processes for the recovery of reusable materials. Moreover, a large percentage of the wires is comprised of copper wires that may or may not be insulated, and which in themselves represent a con- siderable value because of the copper content.
  • the object of the invention therefore to provide a sorting device with which the sorting of wires from a waste stream maybe realized in a simple, trouble- free and reliable manner, and at low costs.
  • the sorting device according to the invention is characterized in that the body is embodied as a rotatable roll, which oscillates axially during its rotation.
  • the result of the oscillation applied with respect to the rotatable roll is that the non-wire-like material is induced to moved downwards under the influence of gravity, rolling past and between the spikes or similar projections, over the rotatable roll.
  • the oscillation of the roll has the additional advantage that at the discharge side, the wires that are caught will disengage from the rotating roll more easily.
  • a very suitable embodiment of the sorting device according to the invention that is simple to realize is characterized in that the roll is coupled to an oscillation engine.
  • Particularly good results using the sorting device according to the invention may be realized with the embodiment in which the spikes or similar projections are provided on the roll in a regular check pattern. It is further desirable that the spikes or similar projections be placed at a mutual distance, which distance depends on the maximum dimensions of a non-wire-like fraction in the waste stream and which preferably exceeds said maximum dimensions by 10%. The length of the spikes or projections measured from the surface of the roll, is then 1-2 times said mutual distance.
  • the sorting device is characterized in that a feed trough is provided for the material to be sorted, which discharges above a horizontal plane in which lies the longitudinal axis of the roll, onto a position near the outer circumference of the roll and that, when in operation, said circumference of the roll moves from the feed trough upward.
  • the sorting device 1 comprises a body that moves when in use, having the form of a rotatable roll 2. During rotation, said rotatable roll is made to oscillate axially as indicated by arrow A.
  • the roll 2 is provided with regularly spaced spikes or similar projections. Said spikes or projections are configured in a regular check pattern. The mutual distance between the spikes or projections is in this example approximately 2 cm, while the length of the projections is approximately 3.5 cm. To the person skilled in the art this is sufficiently clear so that it is not shown in detail in the drawing.
  • Via an excenter 3 the roll is driven by an oscillator engine 4 to effectuate oscilla- tion.
  • the roll 2 is rotated about the longitudinal axis by means of a rotary engine.
  • FIG 2 shows that the sorting device 1 is further provided with a feed trough 6 that via an inlet part 7 can be loaded with the material to be sorted.
  • the feed trough 6 discharges above a horizontal plane, indicated in Figure 2 by the line A-A in which lies the longitudinal axis of the roll 2, and at a position near the outer circumference of the roll 2.
  • the circumference of the roll 2 moves from this position upward as shown by arrow B, indi- eating the direction of rotation of the roll 2.
  • the sorting device according to the invention was subsequently tested in an experimental arrangement .
  • the distance between the spikes was 2 cm, configured in a regular check pattern.
  • the diameter of the roll was 22 cm.
  • the length of the spikes taken from the surface of the roll was 3.5 cm.
  • the width of the spiked portion of the roll was 20 cm. Oscillation was produced by an excenter whose speed was adjustable. The speed of rotation was also adjustable.
  • the material was supplied to the roll on the side going upward, by means of a vibrating trough having a width of 10 cm
  • the material chosen for the test was NF car scrap.
  • the average size of the fragments was around 15 mm (mesh ⁇ 20 mm) .
  • the composition (mass percentages) was as follows : wires 11.0% remainder 89.0%
  • the composition was determined by double-sorting of the sample (17.6 kg) by hand. The maximum deviation in percentages was approximately 0.2%.
  • the term wires applies to all wires that are clearly recognizable as being capable of conducting electricity and being longer than the mesh size (20 mm) .
  • grade and recovery may be defined as follows : Grade: Content, or wire mass percentage m the total mass of the wire product (perfectly sorted this is 100%) .
  • grade recovery wires 2.3% 18.4% (length mostly 1-2 *mesh size) remainder 97.7% 98.2% total 100.0% 89.3%
  • the sorting device according to the invention re- suits in a good grade and recovery of wires longer than the mesh size, in one single sorting step. Obstructions do not occur.
  • the costs of using such a device in a dry sorting process will be quickly recovered because problems caused by the wires in other sorting equipment are avoided and due to an effective recovery of the components of the wires (mainly copper) .
  • the capital outlay is relatively modest.
  • the operating costs (mainly energy) are also low.

Landscapes

  • Combined Means For Separation Of Solids (AREA)

Abstract

A sorting device (1) suitable for sorting wire from a waste stream, comprising a body (2) that moves when in use, and provided with spikes or similar projections. The body is embodied as a rotatable roll (2), which oscillates axially during its rotation. The roll is coupled to an oscillation engine (4). The spikes or similar projections are provided on the roll (2) in a regular check pattern.

Description

Separating device
The invention relates to a sorting device suitable for sorting wire from a waste stream, comprising a body that moves when in use, and provided with spikes or similar projections.
Such a sorting device is known from practice. The prior art sorting device is provided with a sloping conveyor belt covered with spikes. The waste stream, more specifically being scrap metal, is supplied on the belt so that the spikes can comb out the wire from the scrap while allowing the remaining material to roll down.
In practice the prior art sorting device has not proved, to be satisfactory. It is desirable to sort in par- ticular the wires from the waste stream as they often have a disrupting effect on the further processes for the recovery of reusable materials. Moreover, a large percentage of the wires is comprised of copper wires that may or may not be insulated, and which in themselves represent a con- siderable value because of the copper content.
It is the object of the invention therefore to provide a sorting device with which the sorting of wires from a waste stream maybe realized in a simple, trouble- free and reliable manner, and at low costs. To this end, the sorting device according to the invention is characterized in that the body is embodied as a rotatable roll, which oscillates axially during its rotation. The result of the oscillation applied with respect to the rotatable roll is that the non-wire-like material is induced to moved downwards under the influence of gravity, rolling past and between the spikes or similar projections, over the rotatable roll. The oscillation of the roll has the additional advantage that at the discharge side, the wires that are caught will disengage from the rotating roll more easily. A very suitable embodiment of the sorting device according to the invention that is simple to realize is characterized in that the roll is coupled to an oscillation engine. Particularly good results using the sorting device according to the invention may be realized with the embodiment in which the spikes or similar projections are provided on the roll in a regular check pattern. It is further desirable that the spikes or similar projections be placed at a mutual distance, which distance depends on the maximum dimensions of a non-wire-like fraction in the waste stream and which preferably exceeds said maximum dimensions by 10%. The length of the spikes or projections measured from the surface of the roll, is then 1-2 times said mutual distance.
In a further aspect of the invention, the sorting device is characterized in that a feed trough is provided for the material to be sorted, which discharges above a horizontal plane in which lies the longitudinal axis of the roll, onto a position near the outer circumference of the roll and that, when in operation, said circumference of the roll moves from the feed trough upward.
Practically very useful results are obtained if during operation the roll's speed of rotation is approxi- mately 1.5 rotations/min, and the oscillation frequency is approximately 25 Hz with an amplitude of approximately 2 mm.
The invention will now be elucidated with the aid of a non-limiting exemplary embodiment of the sorting de- vice according to the invention, with reference to the appended drawings in which Figures 1 and 2 show a rear view and a side view of the sorting device according to the invention.
Identical reference numbers used in the Figures refer to similar parts.
The sorting device 1 comprises a body that moves when in use, having the form of a rotatable roll 2. During rotation, said rotatable roll is made to oscillate axially as indicated by arrow A. The roll 2 is provided with regularly spaced spikes or similar projections. Said spikes or projections are configured in a regular check pattern. The mutual distance between the spikes or projections is in this example approximately 2 cm, while the length of the projections is approximately 3.5 cm. To the person skilled in the art this is sufficiently clear so that it is not shown in detail in the drawing. Via an excenter 3 the roll is driven by an oscillator engine 4 to effectuate oscilla- tion. In addition, the roll 2 is rotated about the longitudinal axis by means of a rotary engine. Figure 2 shows that the sorting device 1 is further provided with a feed trough 6 that via an inlet part 7 can be loaded with the material to be sorted. The feed trough 6 discharges above a horizontal plane, indicated in Figure 2 by the line A-A in which lies the longitudinal axis of the roll 2, and at a position near the outer circumference of the roll 2. When in operation, the circumference of the roll 2 moves from this position upward as shown by arrow B, indi- eating the direction of rotation of the roll 2.
The sorting device according to the invention was subsequently tested in an experimental arrangement . The distance between the spikes was 2 cm, configured in a regular check pattern. The diameter of the roll was 22 cm. The length of the spikes taken from the surface of the roll was 3.5 cm. The width of the spiked portion of the roll was 20 cm. Oscillation was produced by an excenter whose speed was adjustable. The speed of rotation was also adjustable. The material was supplied to the roll on the side going upward, by means of a vibrating trough having a width of 10 cm
Sample NF car scrap
The material chosen for the test was NF car scrap. The average size of the fragments was around 15 mm (mesh < 20 mm) . The composition (mass percentages) was as follows : wires 11.0% remainder 89.0% The composition was determined by double-sorting of the sample (17.6 kg) by hand. The maximum deviation in percentages was approximately 0.2%. The term wires applies to all wires that are clearly recognizable as being capable of conducting electricity and being longer than the mesh size (20 mm) .
Test results
Two tests were carried out . In both cases the feed trough was positioned 10 mm above the topmost horizontal tangent on the circumference of the roll. The vertical distance between the end of the feed trough and the vertical tangent at the surface of the roll (here denominated dv) was varied. The rotational speed of the roll was 1.6 rotations per minute. The oscillation frequency was approximately 25 Hz with an amplitude of approximately 2 mm. Grade and recovery of the wires for both determinations were obtained by means of manual sorting as described above.
The terms grade and recovery may be defined as follows : Grade: Content, or wire mass percentage m the total mass of the wire product (perfectly sorted this is 100%) .
Recovery: Percentage of recovery, or wire mass percentage m the wire product m relation to the total mass of wires of the feed stream (perfectly sorted this is 100%) .
Test 1, dv = 1 cm product : grade recovery wires 84.5% 71.6% (length mostly > 2 *mesh size) remainder 15.5% 1.6% total 100.0% 9.2% tailing : grade recovery wires 3.4% 28.0% (length mostly 1-2 *mesh size) remainder 96.6% 98.4% total 100.0% 90.8%
Test 2, a, = 0 cm product : grade recovery wires 85.2% 81.6% (length mostly > 2 *mesh size! remainder 14.8% 1.8% total 100.0% 10.7%
tailing: grade recovery wires 2.3% 18.4% (length mostly 1-2 *mesh size) remainder 97.7% 98.2% total 100.0% 89.3%
Both tests proceeded without obstructions, all the fragments fell off at the bottom of the roll. The wires in the product were considerably longer than in the tailing, which means that the most problematic long wires can in any case be sorted successfully. The capacity of the prototype was approximately 100 kg/h at a trough width of 10 cm.
The sorting device according to the invention re- suits in a good grade and recovery of wires longer than the mesh size, in one single sorting step. Obstructions do not occur. The costs of using such a device in a dry sorting process will be quickly recovered because problems caused by the wires in other sorting equipment are avoided and due to an effective recovery of the components of the wires (mainly copper) . Thanks to the simple construction of the sorting device according to the invention, the capital outlay is relatively modest. The operating costs (mainly energy) are also low.

Claims

1. A sorting device suitable for sorting wire from a waste stream, comprising a body that moves when in use, and provided with spikes or similar projections, characterized in that the body is embodied as a rotatable roll, which oscillates axially during its rotation.
2. A sorting device according to claim 1, characterized in that the roll is coupled to an oscillation engine .
3. A sorting device according to claim 1 or 2 , characterized in that the spikes or similar projections are provided on the roll in a regular check pattern.
4. A sorting device according to claim 3, characterized in that the spikes or similar projections are placed at a mutual distance, which depends on the maximum dimensions of a non-wire-like fraction in the waste stream and which preferably exceeds said maximum dimensions by 10%.
5. A sorting device according to claim 4, characterized in that the length of the spikes or projections, measured from the surface of the roll, is 1-2 times their mutual distance.
6. A sorting device according to one of the preceding claims, characterized in that a feed trough is provided for the material to be sorted, which discharges above a horizontal plane in which lies the longitudinal axis of the roll, onto a position near the outer circumference of the roll and that, when in operation, said circumference of the roll moves from the feed trough upward.
7. A sorting device according to one of the claims 1-6, characterized in that during operation the roll's speed of rotation is approximately 1.5 rotations/min, and the oscillation frequency is approximately 25 Hz with an amplitude of approximately 2 mm.
PCT/NL2001/000121 2000-03-01 2001-02-14 Separating device Ceased WO2001064357A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001236199A AU2001236199A1 (en) 2000-03-01 2001-02-14 Separating device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1014536A NL1014536C2 (en) 2000-03-01 2000-03-01 Separation device.
NL1014536 2000-03-01

Publications (1)

Publication Number Publication Date
WO2001064357A1 true WO2001064357A1 (en) 2001-09-07

Family

ID=19770921

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL2001/000121 Ceased WO2001064357A1 (en) 2000-03-01 2001-02-14 Separating device

Country Status (3)

Country Link
AU (1) AU2001236199A1 (en)
NL (1) NL1014536C2 (en)
WO (1) WO2001064357A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1712301A3 (en) * 2005-04-14 2008-05-14 Hochschule Rapperswil, Institut für angewandte Umwelttechnik Device and method for processing electronic waste

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3830366A1 (en) * 1988-09-07 1990-03-15 Metallgesellschaft Ag Method for separating wire lengths from a fraction of scrap particles
DE4041385A1 (en) * 1990-12-21 1992-07-02 Hamos Elektronik Gmbh Separator for cable and wire recycling - has bristle structure to remove wire particles from chopped mixt. esp. for copper@ recovery
DE4325835A1 (en) * 1993-07-31 1995-02-02 Lindemann Maschfab Gmbh Method and device for preparing materials from a solid mixture
DE4431942A1 (en) * 1994-09-08 1996-03-14 Cyrus Gmbh Schwingtechnik Device for sorting solid mixed goods of different granular forms

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3830366A1 (en) * 1988-09-07 1990-03-15 Metallgesellschaft Ag Method for separating wire lengths from a fraction of scrap particles
DE4041385A1 (en) * 1990-12-21 1992-07-02 Hamos Elektronik Gmbh Separator for cable and wire recycling - has bristle structure to remove wire particles from chopped mixt. esp. for copper@ recovery
DE4325835A1 (en) * 1993-07-31 1995-02-02 Lindemann Maschfab Gmbh Method and device for preparing materials from a solid mixture
DE4431942A1 (en) * 1994-09-08 1996-03-14 Cyrus Gmbh Schwingtechnik Device for sorting solid mixed goods of different granular forms

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1712301A3 (en) * 2005-04-14 2008-05-14 Hochschule Rapperswil, Institut für angewandte Umwelttechnik Device and method for processing electronic waste

Also Published As

Publication number Publication date
NL1014536C2 (en) 2001-09-04
AU2001236199A1 (en) 2001-09-12

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