EP0861124A1

EP0861124A1 - System for separating non-magnetisable metals from a mixture of solids

Info

Publication number: EP0861124A1
Application number: EP96917339A
Authority: EP
Inventors: Joachim Schönfeld; Erwin Kaldenbach; Eberhard Stodt; Elmar Klomfass; Reyk Buch; Jürgen DILLMANN; Willi Schneider
Original assignee: Lindemann Maschinenfabrik GmbH
Current assignee: Metso Lindemann GmbH
Priority date: 1995-06-14
Filing date: 1996-06-13
Publication date: 1998-09-02
Anticipated expiration: 2016-06-13
Also published as: WO1997000138A1; DE59607514D1; US6068133A; ATE204210T1; DE19521415A1; DE19521415C2; EP0861124B1

Abstract

PCT No. PCT/DE96/01038 Sec. 371 Date May 28, 1998 Sec. 102(e) Date May 28, 1998 PCT Filed Jun. 13, 1996 PCT Pub. No. WO97/00138 PCT Pub. Date Jan. 3, 1997A system for separating non-magnetizable metals from a mixture of solid with a feed device; an endless conveyor belt with belt drums supported on a frame, of which the head drum at the discharge end is provided with a driven, eccentrically mounted and adjustable magnet rotor; and a separation area downstream of the head drum. To improve the degree of separation achieved, the system is provided with a vibrating channel (2) with an additional slope; means for adjusting the speed of the conveyor belt (3); means for generating a variable force of repulsion (Fvar); a controlled rotational speed adjustment unit (nvar) for the magnet rotor (3.4); and adjustable separating elements (4.1, 4.2, 4.3), each of which is located between two adjacent throwing parabolas of the separated fractions.

Description

Arrangement for separating non-magnetizable metals

from a solid mixture

Technical field

The invention relates to an arrangement for separating non-magnetizable

Metals, especially non-ferrous metals from a solid mixture, essentially

consisting of one with a deflecting the mixture components on throwing parabolas

kenden alternating magnetic field generator, the at least two at a distance from each other

arranged dividers are arranged downstream.

State of the art

Such an arrangement is in terms of the main components

according to DE 38 17 003C1 and DE 42 00 093 A1 and is successful in practice

applied richly. It has been found to be advantageous that a combination

of the adjustable effective range of the alternating field generated by the magnetic rotor

due to the position of the axis of rotation of the magnetic rotor in the quadrant of the material

Drop zone according to DE 38 17 003 C1 with the effect according to DE 42 00 093 A1,

namely from a solid mixture given to the alternating field generator in

one pass several different components as fractions simultaneously

to separate, an effective separation process for solid mixtures enables. However, there is the problem of separating the purity of the variety that can currently be achieved

fractions to increase further, especially under the conditions that the

abandoned solid mixtures not only in terms of their different

distinguish electro-physical properties, but also according to

geometric shapes and more heterogeneous material flows.

Presentation of the invention

The invention is therefore based on the object, an arrangement of the beginning

described way to improve so that by a constructive link

technical means, from the application area of the solid mixture to the other

Conveying and discharge area up to the dividing line formed by the throwing parabolas

zone their functional effects on increasing the quality of the Trenner¬

result, i.e. Concentrate the purity of the individual material fractions.

According to the invention this object is achieved in that

a) designed as a vibrating feeder in the area of

Handover of a resolution and acceleration designed as an additional inclination

distance to the even, calmed down and gentle on the conveyor belt

Having distribution of the solid mixture on the conveyor belt, b) the conveyor belt to adjust the ratio of quantities

current / throughput, influencing the residence time of the solid material

mix in the eddy current field of the magnetic rotor and change the discharge

parabola of the respective component of the solid mixture means for one

Includes cruise control,

c) the magnetic rotor based on the adaptation of the magnetic force to the ejection

point of the respective constituent of the solid mixture in a range of

> 90 ° is adjustable and designed so that a variable repulsive force for a

Material-wide rejection of the respective component of the solid

Mixture can be generated by the head drum using a variable eddy current field

is

d) the magnetic rotor to adapt to the grain size to be separated and

to the material properties of the solid mixture by means of different

Magnetization times over a faster or slower magnetic field

has a speed control controlled by a frequency converter

and

e) the dividing vertices between adjacent parabolas of the

separate fractions are arranged and adjustable. Other features that are related to the invention are in

claims 2 to 24 described.

The inventive effect of the arrangement results from the novel

Combination of features, such as additional inclination of the vibrating channel, speed

didity control of the conveyor belt, adjustability of the magnetic rotor, speed control

Development of the above-described magnetic rotor and reordering of the separating apex

station, whose uniform, functionally merging overall effect in the

Embodiments is explained in more detail.

Brief description of the drawings

The drawings show

Fig. 1 with the schematic side view of the arrangement according to the invention

basic functional representation,

Fig. 2 with the schematic side view of the head drum of the conveyor belt

the operating principle of the eccentrically mounted magnetic rotor,

Fig. 3 is the front view of the head drum and

4 shows the side view according to FIG. 3. Best way to carry out the invention

The invention will be explained below using exemplary embodiments.

1, the arrangement basically consists of a solid mixture

1, which e.g. Iron / stainless steel (V2A), 1.1, non-metals / stainless steel (V4A), 1.2, NE-

Metal mixture 1.3 and light metal mixture 1.4 contains, give up in the direction of the arrow

the, usually inclined vibration channel 2, which is essential to the invention with a

additional inclination 2.1 is provided, a conveyor belt 3 and others. with the in

a head drum 3.3 eccentrically mounted magnetic rotor 3.4 as a non-ferrous cutting station

and finally a separation crest station 4 for the individual fractions 1.1, 1.2, 1.3,

1.4.

A drive drum 3.1 drives an endless conveyor belt 3.2 over the head drum

3.3, in which the eccentrically mounted and at least in the range α var (Fig. 2)

the material discharge zone for non-ferrous metals adjustable, driven magnetic rotor 3.4

is arranged.

The separation crest station 4 is divided into an area for the in this example

mentioned fractions to be separated, such as any iron / stainless steel (V2A)

1.1, in this case from the area of a material discharge zone 3.5 (FIG. 2), and

Non-metals / stainless steel (V4A) 1.2 from the material drop zone 3.6, non-ferrous metal mixed fraction 1.3 from the material drop zone 3.7 and light metal mixture 1.4 from the

Material drop zone 3.8, the latter two particularly from the areas

of the material drop zones 3.5 and 3.6 due to the effect of the α in the position range

var adjustable magnetic rotor 3.4 from the head drum 3.3 in different

Throwing parabolas are repelled.

A characteristic of the arrangement of dividing vertices 4.1, 4.2, 4.3 is that they

in each case between adjacent throwing parabolas of the separated fractions 1.1, 1.2,

1.3 and 1.4 protrude and otherwise function as described in DE 42 00 093 A1.

This arrangement has the following surprising overall effect:

By means of the additional inclination 2.1 of the vibration channel 2 in the area of the transfer

of the solid mixture 1 on the conveyor belt 3.2 is this area as a dissolving and

Acceleration distance formed, i.e. that the solid mixture 1 dissolve

send and accelerated the conveyor belt 3.2 and surprisingly the same there

moderately distributed and above all quickly put in a quiet location. The

from this for the design of the conveyor belt 3 additional effect can be constructive

can even be used for the realization of a short construction, since so far

when the solid mixture 1 is transferred by means of a single inclined vibration

channel 2 the solid mixture a relatively long way on the conveyor belt 3.2 to

needed to calm the situation. This essential effect is for the

Function of the arrangement is a decisive starting effect for influencing the separation

quality. In the further course of the promotion of the solid mixture, which has been calmed for a short time

1 in the area of the magnetic rotor 3.4, this can now be used to adapt the

Ratio of volume flow / throughput effective through a speed

speed control v var of the conveyor belt 3.2 with regard to the time spent in the vortex

current field of the magnetic rotor 3.4 and to change the discharge parabola depending on the

specific properties and compositions of the parts of the solid material

Mix 1 can be influenced.

This effect, which has so far only been sought but not yet feasible, is having an effect

the described calming on the one hand in the further functional sequence and

on the other hand, in the construction of the conveyor belt 3 quasi double acting.

The subsequent sequence, namely by means of a speed control n, is thus also possible

var of the magnet rotor 3.4 via a frequency converter, not shown, and

by means of different magnetization times on the one to be separated

Grain size and material properties of the parts of the solid mixture 1 over

to act on a time-variable magnetic field structure, particularly advantageous

influenced. Finally, the separating crest station 4 can thus with respect to the generation

of particularly pure fractions 1.1 to 1.4 can be used efficiently.

The effects of the features according to further claims 2 support this

to 7 the effects described above and ensure the advantageous Gesamt¬

effect with regard to the separate fractions 1.1 to 1.4. In the rest Claims 8 to 24 embodiments are described which in addition to a siche¬

ren operation of the arrangement continue to contribute to the quality of the separation result

and thus the task according to the invention and the target

Subordinate overall effect.

Industrial applicability

As demonstrated by series of tests, the variety can with the invention

the fractions to be separated from the solid matter described at the beginning

Mixing can be further increased since the arrangement produced according to the invention

the applied solid mixtures and their different electro-physi¬

calic properties as well as their different geometric shapes and

more heterogeneous material flows are taken into account for the quality of the end products.

Reference list

1 solid mixture

1.1 Fraction / iron stainless steel (V2A)

1.2 Fraction of non-metals / stainless steel (V4A)

1.3 Non-ferrous metal mixture fraction

1.4 Fraction of light metal mixture

2 vibrating trough

2.1 additional inclination

3 conveyor belt

3.1 drive drum

3.2 Conveyor belt

3.3 head drum

3.4 Magnet rotor

3.5 Material drop zone (for Fe)

3.6 Material drop zone (for non-metals / V4A)

3.7 Material drop zone (for non-ferrous mixed fraction)

3.8 Material drop zone (for non-ferrous light metal)

3.9 magnets

3.10 parallel guiding linkage

3.11 Drive motor for magnetic rotor 3.4

4 parting station

4.1 parting line

4.2 parting line

4.3 Parting parting v var speed control of the conveyor belt 3

F var variable repulsive force α var adjustable position of the magnetic rotor 3.4 n var speed control of the magnetic rotor 3.4

schematic representation of the alignment of a separating apex (4.1, 4.2 or 4.3) by pivoting about the axis

-tJ— \ Schematic representation of the infeed of a dividing crest (4.1, 4.2 or 4.3) through the horizontal adjustment of the axis

j ^ schematic representation of the delivery or attachment of a sy

Separating crest (4.1, 4.2 or 4.3) due to the vertical adjustment of the axis

Claims

claims

1. Arrangement for separating non-magnetizable metals from one

Solid mixture, consisting of a feeding the solid mixture

Feed device, an endless transporting the solid mixture

Conveyor belt with belt drums mounted on a frame, of which the

Dispensing head drum located a driven, eccentric

mounted, adjustable magnetic rotor, which contains the components of the

Solid mixture by means of an alternating magnetic field generator on a material-specific basis

deflects different throwing parabolas, as well as one of the head drums

ordered parting station with parting, characterized,

that

a) the feed device designed as a vibrating trough (2) in the region of

Handover of a resolution and as additional slope (2.1)

Acceleration section for even, calibrated and conveyor belt

gentle distribution of the solid mixture (1) on the conveyor belt (3.2)

having,

b) the conveyor belt (3) to adjust the ratio of quantities

current / throughput, influencing the residence time of the solid material

mix (1) in the eddy current field of the magnetic rotor (3.4) and change the Parabola of the respective constituent of the solid mixture (1) means for

contains a speed control (v var),

c) the magnetic rotor (3.4) based on the adaptation of the magnetic force to the

Drop point of the respective component of the solid mixture (1) in one

Range (α var) of> 90 ° is adjustable and designed so that a variable

Repulsion force (F var) for a material-specific wide repulsion of the respective

Part of the solid mixture (1) from the head drum (3.3) by a

variable eddy current field can be generated,

d) the magnetic rotor (3.4) to adapt to the grain size to be separated

and the material properties of the solid mixture by means of difference

magnetization times over a faster or slower

Magnetic field build-up controlled by a frequency converter

Speed control (n var) has and

e) the dividing vertices (4.1, 4.2, 4.3) between adjacent parabolas

the separate fractions (1.1, 1.2, 1.3, 1.4) are arranged and adjustable.

2. Arrangement according to claim 1, characterized in that the Kopftrom¬

mel (3.3) and the same wrapping conveyor belt (3.2) to achieve a

effective proximity of the magnetic field to the constituents of the solid mixture sches (1) and an increased repulsive force (F var) relatively thin-walled or with

a small thickness are formed.

3. Arrangement according to claim 2, characterized in that the conveyor belt

(3.2) in order to reduce the load on the thin-walled head drum (3.3) and

for more effective proximity of the magnetic field to the constituents of the solid

mixture (1) has a thickness in the range of 1.7 ... 4 mm.

4. Arrangement according to claim 2, characterized in that the Kopftrom¬

mel (3.3) for a more effective proximity of the magnetic field to the components of the

Solid mixture (1) a jacket thickness of approx. 4 mm with 1000 mm working

width has and is primarily made of GRP or similar material.

5. Arrangement according to claim 1, characterized in that the magnet rotor

(3.4) to increase the pole change frequency and the repulsive force (F var) with

Fine Poland is equipped.

6. Arrangement according to claim 5, characterized in that the magnet rotor

(3.4) with magnets (3.9) made of a neodymium-iron-boron alloy for a strong one

Eddy current field is populated.

7. Arrangement according to claim 5, characterized in that the magnet rotor

(3.4) with relatively small magnets (3.9) in a multipole arrangement to increase of the pole changing range from approx. 320 (480) to approx. 1040 (1440) Hz and the

Repulsion force (F var) same maximum speed of the magnetic rotor (3.4) of approx.

2400 (3600) min ^"1 .

8. Arrangement according to claim 1, characterized in that for adjustment

of the magnet rotor (3.4) and uniform loading of the bearings of the magnet rotor

tors (3.4) a parallel guide linkage (3.10) is provided.

9. Arrangement according to claim 1, characterized in that in the area of

Bearing of the magnetic rotor (3.4) to determine impermissible unbalance

Vibration monitoring is provided.

10. The arrangement according to claim 1, characterized in that for the determination

the rotation of the head drum (3.3) driven by the conveyor belt or

Indication of a fault by means of a pulse generator from the head drum (3.3)

Belt run monitoring is provided.

11. The arrangement according to claim 1, characterized in that independently

from the frequency converter by means of electronic two-channel safety monitors

speed monitoring of the magnetic rotor (3.4) to avoid excessive

Speeds that cause a detachment of magnets (3.9) is provided.

12. The arrangement according to claim 1, characterized in that a Antriebs¬

motor (3.11) for the magnet rotor (3.4) an automatically operable mechani¬

cal brake, which in the event of a power failure, switching off the arrangement,

Emergency stop circuit, response to vibration monitoring, response

the belt run monitoring and / or response of the speed monitoring

takes effect.

13. The arrangement according to claim 1, characterized in that the Trennschei¬

tel (4.1, 4.2, 4.3) are adjustable so that to avoid bouncing off

Divide the separated fractions (1.1, 1.2, 1.3, 1.4) the dividing surfaces of the

Parting vertices (4.1, 4.2, 4.3) mean tendons or mean tangents between

form the parabolas of the factions (1.1, 1.2, 1.3, 1.4).

14. Arrangement according to claim 1 and 13, characterized in that kombi¬

funds for targeting as well as a delivery (* - ^L ->,] £) in the

respective separation area are provided.

15. Arrangement according to claim 1, 13 and 14, characterized by on a

Combined means acting shifting gate.

16. The arrangement according to claim 1, characterized in that on the

Conveyor belt (3.2) Driver for conveying magnetic parts out of the

Magnetic area are provided.

17. The arrangement according to claim 1, characterized in that with the

Corresponding wipers for cleaning below the run of the conveyor belt (3.2)

of the conveyor belt (3.2) of adhering parts are provided.

18. The arrangement according to claim 1 and 17, characterized in that an in

Direction of the conveyor belt (3.2) seen first scraper the conveyor belt

(3.2) grazes and a second scraper opposite the conveyor belt (3.2)

is arranged a short distance, so that initially adhering parts or

Dirt is knocked off and then collected.

19. The arrangement according to claim 1, 13, 14 and / or 15, characterized in

that a separating apex (e.g. 4.1) for the separation of Fe and / or

if necessary, dirt is provided.

20. The arrangement according to claim 1, 13, 14, 15 and / or 19, characterized gekennzeich¬

net that the separating vertex (e.g. 4.1) in the area (3.5, 3.6) of a possible

Drop zone for Fe is adjustable.

21. The arrangement according to claim 1, 13, 14, 15, 19 and / or 20, thereby gekenn¬

indicates that the separating vertex (e.g. 4.2) with its upper edge in the lower

the influence of the eddy currents of the magnetic rotor (3.4) turbulent zone of the Area (3.6, 3.7) ends, in which the magnetic rotor (3.4) contains the non-ferrous metals

separating solid mixture (1) in the region (α var) repels.

22. The arrangement according to claim 1, 13, 14, 15, 19, 20 and / or 21, characterized

characterized in that the dividers (4.1, 4.2, 4.3) can be plugged on.

23. The arrangement according to claim 1, characterized by a frame for the

Bearing of the drive drum (3.1) and head drum (3.3), in cross section

a C-design open to the side for the disassembly and assembly of a conveyor belt

(3.2) without complex aids.

24. The arrangement according to one or more of claims 1 to 23, gekennzeich¬

net through an optional combination of means and effects

Ensuring a separation result with a high degree of purity of the respective

gene fraction (1.1, 1.2, 1.3 or 1.4).