WO2013020849A1 - Magnetischer trommelscheider und verfahren zu dessen betrieb - Google Patents
Magnetischer trommelscheider und verfahren zu dessen betrieb Download PDFInfo
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- WO2013020849A1 WO2013020849A1 PCT/EP2012/064864 EP2012064864W WO2013020849A1 WO 2013020849 A1 WO2013020849 A1 WO 2013020849A1 EP 2012064864 W EP2012064864 W EP 2012064864W WO 2013020849 A1 WO2013020849 A1 WO 2013020849A1
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- WO
- WIPO (PCT)
- Prior art keywords
- drum
- magnets
- drum separator
- separator
- relative position
- 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
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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
- B03C1/10—Magnetic separation acting directly on the substance being separated with cylindrical material carriers
- B03C1/14—Magnetic separation acting directly on the substance being separated with cylindrical material carriers with non-movable magnets
- B03C1/145—Magnetic separation acting directly on the substance being separated with cylindrical material carriers with non-movable magnets with rotating annular or disc-shaped material carriers
-
- 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
- B03C1/10—Magnetic separation acting directly on the substance being separated with cylindrical material carriers
- B03C1/12—Magnetic separation acting directly on the substance being separated with cylindrical material carriers with magnets moving during operation; with movable pole pieces
-
- 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
- B03C1/10—Magnetic separation acting directly on the substance being separated with cylindrical material carriers
- B03C1/14—Magnetic separation acting directly on the substance being separated with cylindrical material carriers with non-movable magnets
-
- 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
- B03C2201/00—Details of magnetic or electrostatic separation
- B03C2201/20—Magnetic separation of bulk or dry particles in mixtures
-
- 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
- B03C2201/00—Details of magnetic or electrostatic separation
- B03C2201/24—Details of magnetic or electrostatic separation for measuring or calculating of parameters, e.g. efficiency
Definitions
- the invention relates to a magnetic drum separator and a method for its operation.
- Magnetic separation is a method of separating materials that have different magnetic properties. This process is carried out with a separator.
- the most commonly used in the processing industry, especially in ferromagnetic materials magnetic separators are magnetic drum separator or drum separators.
- Drum separators exist in various embodiments, for example, Gleich211- and Gegenstromtrommelscheider. The drum separator separates a feed into a recyclable material and a waste stream.
- valuable substances are to be separated from non-valuables into a material stream and a waste stream.
- mine magnetite enrichment weak field trenchers are used. This process and this process can be with a fixed or magnetic alternating field reali ⁇ Siert be. For example, in the ore treatment of Magnetiterzen permanent magnets are mostly used.
- the drum of the drum separator itself is not magnetic.
- a magnet system consisting of permanent magnets or electromagnets.
- the drum represents the movable in operation, namely about its position or spatial or stationary rotational axis rotating part of the Se ⁇ parators.
- the magnet system forms a substantially immovable part.
- the raw material entry into the separator in the form of a feed takes place at an upper or lower area of the rotating drum.
- the feed material is called a suspension, also called pulp, for a wet separation.
- the magnetic Poles of the separator are distributed at certain intervals or in egg ⁇ ner certain geometry along the drum circle.
- the geometrical magnet arrangement defines the field geometry in the separation zone.
- the so-called gap size ie the distance between the magnet system and the feed material or
- Drum determines the operation of the separator and has ⁇ impact on the output from the drum separator output streams, namely the waste stream and the recyclable material flow. If the gap is too small, by the magnetic see attraction of the magnet system too much material is ⁇ covered, so that grains are dressed with only a small proportion of ferromagnetic the drum wall and enter the value ⁇ material flow. The selectivity of the separator is limited because ⁇ and the quality of the recyclable material flow is then too low. If, on the other hand, the gap is too large, only very strongly magnetized particles are entrained into the recyclable material due to high ferromagnetic contents in the particle and thus the throughput of the separator is limited.
- Recyclable material ie eg magnetic material
- Recyclable material then also enters the waste stream, which reduces the yield of valuable material.
- the specific energy consumption of the drum separator which in addition in the aforementioned first case, characterized increases, so that more waste materials, that is waste rock are present in the valuable substance ⁇ stream and thus be transported for example in a subsequent milling step.
- the distance of the magnets from each other is an essential design feature.
- the geo ⁇ metric feature of the distance of the magnets to each other in combination with the above gap distance between the magnet system and Drum wall is thus adapted to the respective ore composition, the degree of grinding or the particle distribution in the pulp, the solids content in the pulp and thus to the Pulpenzusam ⁇ composition.
- the respective separator is thus optimally usable only for the respective given conditions.
- the magnetic separator does not respond to changes in egg ⁇ properties of the input material, ie of the feed material. Ver ⁇ changed properties here are for example changes in shares of magnetic ores to non-magnetic rocks.
- the axes of rotation are parallel to the axis of rotation of the drum.
- magnet rollers can also be rotated about an axis passing through them. Again, the axis is parallel to the axis of rotation of Trom ⁇ mel.
- No. 2011163015 A1 discloses a magnetic drum separator with a drum rotatable about the axis of rotation and with a magnet arrangement arranged in the interior of the drum and having a plurality of magnets.
- the individual magnets are arranged on a pivotable plate so that a relative position of the magnets to the axis of rotation of the drum separator is variable.
- the US 1,729,008 A discloses a magnetic Trommelschei, which has a rotatable drum with a Magnetanord ⁇ tion comprising electromagnets.
- the position of the electromagnet is variable relative to the axis of rotation of the drum.
- No. 2,785,801 A describes a magnetic drum separator which has magnets arranged on a frame whose relative position to the axis of rotation of the drum separator by means of the frame can also be changed during operation of the drum separator.
- the object of the invention is to provide a contrast improved magnetic drum separator and a method for its operation. The object is achieved by a drum separator according Pa ⁇ tent pipe 1 and a method according to claim 12th
- the magnetic drum separator according to the invention has a drum rotatable about a rotation axis.
- a magnet arrangement is arranged in the interior of the drum.
- the magnet ⁇ arrangement has a plurality of magnets.
- In the outer space of the drum is a separation zone.
- the Separati ⁇ onszone is flowed through by a feed material. In other words - for example caused by the rotation of the drum - the feed material is moved through the separation zone.
- the Se ⁇ para tion zone is separated using a magnetic field generated by the magnet arrangement in this the feed material in accordance with a sheath behavior of the drum separator in a waste stream and a Wertstoffström.
- the separation of the tasks beguts in the waste stream and is thus Wertstoffström main ⁇ neuter by the action or with the aid of the magnet arrangement or their configuration.
- Relative position of the magnets to the drum or to the separation zone changed.
- the change in position is to be understood that during operation of the drum separator rotates the drum and the magnet system yet not co-rotate with this, but at a fixed, albeit changeable
- Position is located.
- An adjustment of this "fixed" relative position of the magnet system therefore means here a Variegated ⁇ tion between different, but each is to be regarded in itself with respect to the drum rotation as stationary Relativpo- sitions of the magnets to the rotation axis.
- the word “relative position” is here to be understood in contrast to a "situation" in the strict sense. In the event of a change in position, the spatial orientation or orientation of magnets would also be detected, which would mean, for example, a rotation about an axis that passes through the magnet itself or in its immediate vicinity.
- the position change means to change a distance of the magnet for rotation ⁇ axis (and thus to the drum) and / or a change in circumferential position relative to the axis of rotation, so a change in position in the circumferential direction of the drum.
- a setpoint value for a process value influenced by the sheath behavior can be predefined on the drum separator in the drum separator. Furthermore, the Trom- melscheider at least one measuring device for determining a
- the process value is a detectable size in the drum separator, eg a measurable property of recyclable materials or waste ⁇ current.
- the process value is in turn influenced by the adjustable parameter of the relative position of the magnets to the rotation axis, as this in turn determines the sheath behavior and thus eg the properties of recyclable material and waste stream in the form of the process value. It arises as a currency ⁇ rend the operation of the drum separator working control loop for adjusting the parameter.
- Measured variables can be: measurement of the valuable substance content, eg magnetite ore or iron and / or a measurement of selected non-value elements.
- selected non-value elements e.g magnetite ore or iron and / or a measurement of selected non-value elements.
- phosphorus or silica to call This is used to monitor maxi ⁇ times permissible non recyclable material content.
- the measurement is useful here only in recyclable material.
- Another measure is the particle size distribution of the recyclable material or concentrate.
- the relative positions of the magnets relative to one another or to the drum are available as control variables.
- Suitable measuring methods or principles are X-ray fluorescence for measuring the substance composition or substance concentration, laser diffraction for measuring particle sizes or particle size distribution. Ultrasound can be used to measure particle size or distribution and solids concentration.
- control target of such a control with regard to the product quality (grade), the change of the relative positions of the magnets and thus the remarkable flux ⁇ cash separation process parameters are, for example, until a measured actual value concentration in Wertstoffström the target value concentration corresponds.
- a change in the control variables and hence the influenceable separation process parameters is conceivable until the measured actual concentration of the non-recyclable material in the recyclable material corresponds to the desired concentration of the non-recyclable material.
- a control target can also result in terms of the degree of recovery (recovery): here, a change in the control variables and thus the influenceable separation process parameters until the maximum possible output of the recyclable material is reached.
- a mini ⁇ m ist of the amount of material in the waste stream can alternatively take place.
- an automated Regele- is supply (closed loop) for the drum separator with respect to the insertable permanent magnet or electromagnet systems be ⁇ written, a response to changing conditions, in particular the ore composition in the feed and the characteristics of the pulp (eg, particle size distribution, Solids content, magnetic content in the solid).
- the separation process can be operated at any time at the optimum Ar ⁇ beitsddling.
- the adaptation of the machine parameters can be carried out without interruption with a shortened time delay.
- the engine operates continuously at the optimum function and thus is an optimal separation resulting ⁇ nis ensured even at temporally different ore or Pulpenzusammen deren of the feed material. It is thus preferably a regulation of the position of one or more permanent magnets or the entire permanent magnet set in relation to the drum wall for operation at the respective optimum operating point.
- the invention is based on the recognition that in addition an automated adjustment of the magnet set according to a control logic brings significant advantages.
- An automatic control for adapting the magnetic field strength and field profile in permanent magnet sets by changing the position of the permanent magnets - individually or in total - relative to the drum wall with the aim of operating the separator regardless of the material to be separated in each case at the optimum operating.
- the process value is a process value of the waste and / or recyclable material stream. This is for example the so-called “recovery” value in recyclables ⁇ power.
- the process value is a concentration of a substance in the valuable substance ⁇ or waste stream. This is, for example, the so-called “grade” value in the recyclable material.
- the change of the relative position of a magnet takes place with a single, several or all magnets of the magnet system.
- the relative position can be performed in common for several or all magnets the same or individually and un ⁇ different for individual magnets or groups of magnets. Is influenced by the change in position as the magnetic field strength produced by the magnets ⁇ or field strength gradient in the separation zone.
- At least one of the magnets may be an electromagnet.
- the electric quantity supplied to the electromagnet can then be influenced in order to change the field properties in the separation zone.
- field strength are ⁇
- be influenced phase position and frequency supplied by the electromagnet such as current, voltage or power bar.
- the excitation current, the phase or the excitation frequency are changed for electromagnets.
- the invention results in an increased flexibility of the installed magnet set to react to fluctuations in the feed and a control option in the drum separator.
- the positional changes affect the effective magnetic field in the separation zone.
- a variable magnetic field is implemented in the separation zone with the aid of the invention.
- the field can be designed such that, for example, ferromagnetic material can be separated from non-magnetic material more reliably and efficiently.
- the goal here is to achieve an optimized application / product quality ratio and / or higher selectivity at any time with a simple and inexpensive method.
- the possibility is created in particular by affecting the magnet system, the gap between the magnetic poles of the magnet system and the non-magneti ⁇ rule drum and thus also to the material to be cut
- the relative position, eg the distance, of the individual magnets on a set of magnets can be adjusted to one another.
- the magnet set itself can thus be adjusted to different degrees of grinding or pulp compositions.
- Müs ⁇ sen either external parameters, for example the flow rate, the solids content or the pulp density or internal machine ⁇ parameters such as the drum speed, the magnetic field strength or the magnetic field profile to be adjusted. It possible to adjust exter ⁇ ne parameter automated manually or (partially) is known.
- the internal parameters still provide the possibilities according to the invention, ie in general some further adjustment possibilities of the (individual) permanent magnets relative to one another and relative to the drum wall - apart from the methods already mentioned above. So there is an adjustment of the magnets rela ⁇ tive to the drum wall.
- the invention it is possible to constantly operate the separation process at the optimum operating point by the magnet set located in the drum separator on the feed material adjustable, adjustable magnetic field profile has. This is crucial for the separation success.
- the field profile is in addition to the magnetic positioning also influenced by magnet-specific properties, such as the magnetic material used and its remanent Magneti ⁇ tion.
- a defined change - during operation - of the geometry of the magnet system for example the magnet spacings to one another, makes it possible to use a single separator more flexibly with regard to the pulp composition.
- a Separatorstrom with such adjustment can be set without eigentli ⁇ che constructive structural modification to changes in the degree of grinding of the ores or the ore composition or adjusted during operation.
- the relative position of at least two magnets is independently variable.
- the change can thus take place independently of one another for two or more or all the magnets. This applies mutatis mutandis to other subsequent embodiments in which "at least two" magnets is mentioned.
- the relative position in the circumferential direction and / or in the radial direction to the axis of rotation is variable. So a rotation angle of the magnet is changed around the axis of rotation. Is changed and the Radi ⁇ alabstand of the magnet to the drum or its wall or its axis of rotation.
- the distance between two magnets is changed to each other.
- the distance can for example be measured in the circumferential direction about the rotational axis ⁇ arc length in this case, which is variable with it.
- an adjustment of the tangential or in the circumferential direction of the drum magnet spacings occurring or the pole center distances is then carried out.
- the relative positions of at least two magnets can only be changed depending on one another. In other words, there is a synchronous position of the respective magnets, which, however, does not necessarily have to be uniform or similar.
- At least two of the magnets are arranged on a rigid frame. Is changeable then another relative position, so alabstand eg radicalized, angle of rotation or tilting of the frame for rotation ⁇ axis.
- the magnets are arranged on the frame in the form of a circular arc segment. The frame is then stored at ⁇ play at one end about a pivot axis parallel to the rotation axis rotatable nen to adjust these to kön-.
- all magnets on the frame are with the
- the relative position of at least one of the magnets is variable to the frame.
- one or more magnets are slidably mounted on a rail.
- the rail is concentric with the axis of rotation.
- the displacement of magnets on a track is concentric with the axis of rotation, that is, at the same distance from the drum. The displacement thus takes place in the circumferential direction of the drum.
- the same or different distances between individual magnets can be maintained in the circumferential direction again.
- the displacement position along the rail is then changed.
- here is a 1D leadership of the magnets on the rail.
- the rail itself can again be understood in the sense of the above-mentioned frame, and then also in their position changeable.
- the drum separator contains a drive which brings about a change in the relative position of at least one magnet.
- the drive can alternatively act but ge ⁇ jointly on at least two of the magnets.
- the drive also interacts with a plurality of magnets together in a location-changing manner.
- all the distances between these magnets or magnets of the drum are then evenly or proportionally changed over a single drive for example, and also quite different, for example, can be made partially different position ⁇ or geometry changes here. This depends on the mechanical embodiment of the coupling between the drive and movement of the magnets. In other words, a synchronous adjustment of several magnets is also possible.
- the object is for the inventive method for
- the method allows a particularly fast and optimal cutting action at any time, even after quickly changing changes in the feed material can be reacted immediately ⁇ automatically.
- the concentration of a Stof ⁇ fes in recyclable or waste stream by means of the at least ei ⁇ NEN meter is measured and the process value is formed by the measured concentration of the substance in the recyclable materials or from ⁇ downdraft. It has proven to be advantageous when the concentration of the substance is measured, which corresponds to the solid in the suspension or the valuable material in the suspension. According to the current state of the art, such concentration measurements can be carried out simply and simply by means of an X-ray fluorescence analysis. Or is further preferably alternatively a measured flow rate ⁇ the suspension by means of at least one measuring device and the process value is formed by the measured flow rate. Also, such Mes ⁇ solution of the flow velocity is relatively simple and inexpensive to carry out.
- Fig.l a magnetic drum separator
- Fig.6-9 further adjustable parameters of an alternative
- FIG. 10 is a block diagram of a sheath process
- FIG. 11 is a block diagram of a control process
- Fig.13 adjustable parameters of an alternative magnet arrangement.
- This contains a rotatable about a rotation axis 4 drum 6.
- a magnet assembly 10 which contains a plurality of magnets 12.
- the Magnetan- assembly 10 is fitted in a stationary changed ⁇ sary with respect to the axis of rotation. 4
- the magnet assembly 10 and the magnets 12 relative to the rotation axis 4 in the short term. Any ⁇ if this means in this context that the magnetic ⁇ arrangement 10 is not permanently with the Drum 6 co-rotated.
- a machine bed 16 In an outer space 14 of the drum 6 is a machine bed 16. Between the machine bed 16 and drum 6, a separation zone 18 is present or enclosed between them. In other words, the separation zone 18 lying between describes the machine bed 16 and drum 6 interim ⁇ c region.
- the drum separator 2 also comprises a feed device 20, which feeds a feed material 22 in the direction of the arrow 24 into the separation zone 18.
- a signal generated by the magnet assembly 10 in the separation zone 18 magnetic field 26 By a signal generated by the magnet assembly 10 in the separation zone 18 magnetic field 26 is now a separate occurs rationsvon with a rotating drum 6 due to its flowing into the direction of the arrow 24 the feed material 22 into a represents ⁇ identified by an arrow Wertstoffström 28 and also by an arrow shown waste stream 30 is separated or separated or divorced.
- the drum 6 or its movement, the design of the machine bed 16 and the separation zone 18 and the Magnetan ⁇ Regulation 10 and the generated magnetic field 26 determine a symbolically represented sheath behavior 32 of the Trommelschei- 2 which is expressed in which parts of the On ⁇ gabegutes 22 in what amount and concentration in the waste stream 28 and which enter the waste stream 30.
- All just mentioned parts of the drum separator 2 are variable with respect to various parameters 34.
- the parameters 34 are shown only symbolically. This Para ⁇ meter 34 all affect the behavior sheath 32.
- These parameters are 34 during operation of the separator drum 2, in particular during the feeding of the feed material 22 along the arrow 24 and the rotation of the drum 6 about the rotational axis 4 changeable. Examples of variable Pa ⁇ parameters 34 as well as their variation, in the following detailed lent explained:
- a variation of a parameter 34 in Fig. 1 is performed as indicated by two double arrows 36.
- the meter 34 Para ⁇ changed in this case the respective relative position R of the magnet assembly 10 relative to the rotation axis 4. This is possible during operation.
- the x or y positions of the entire magnet arrangement 10 are changed in each case in directions perpendicular to the axis of rotation 4. This also changes the magnetic field 26 in the separation zone 18 and thus the sheath behavior 32.
- FIGS. 2 and 3 show further variants according to the invention for the parameter 34 for changing the relative position R, whose change likewise changes the magnetic field 26 in the separation zone 18.
- the respective distances of individual magnets 12 of Magnetanord ⁇ voltage 10 can be varied to each other along the double arrows 36th Thus, their distance varies approximately tangentially to the drum 6.
- the radial distance between individual magnets 12 of the magnet arrangement 10 and the drum 6, again along the double arrows 36 is changed as parameter 34.
- FIGS. 4 and Fig. 5 show a further training inventive guide die for variable parameters 34 for changing the relative position R.
- the magnets 12 are each fixed on a fixed frame 40, symbolized by dots.
- the entire frame 40 is rotatably mounted on an axle 38, which runs parallel to the Ro ⁇ tion axis 4, but here does not coincide with this.
- the pivot angle about the axis 38 of the entire Rah ⁇ mens 40 provides another degree of freedom in shape of a to-influencing parameter 34 is, in turn represented by a double arrow 36.
- the parameter 34 is another Real ⁇ tivposition of the frame 40 to the rotation axis. 4
- the corresponding movement is accomplished in Fig. 4 by a drive 42 which engages on the one hand on the axis of rotation 4 and on the other hand on the axis 38 opposite end of the frame 40.
- the actuation of the drive 42 causes a common adjustment of the relative positions R of all the magnets 12 to the drum 6 together.
- the parameter 34 is here the position of the drive.
- FIG. 4 two situations for different parameters 34 or relative positions R are shown and shown in dashed lines.
- Drawn off is a basic position of the magnet assembly 10 and a dashed line in accordance with a changed parameter 34 is a ⁇ detected position of the magnet assembly 10 is shown.
- the pivoting about the axis 38 a dance Dis ⁇ adjustment of the magnets 12 to the separation zone 18th
- An arrow 44 illustrates the direction of rotation of the drum 6 in the cutting operation.
- the situations in Fig. 4 and Fig. 5 show two different embodiments of the invention, in which the frame 40 is mounted relative to the drum rotation direction at its other end on the axis 38.
- FIG. 6 shows a further embodiment of a drum separator 2 or a magnet arrangement 10.
- the individual magnets 12 are displaceably mounted on a rail 46 in a circumferential direction about the rotation axis 4, in order to change their relative positions R.
- Each of the magnets 12 is also associated with a rotatably mounted on the rail 46 about an axis 48 gear 50.
- gear 50 At each gear 50 is rotatably a crank 52 is arranged with a slot 54. In the slot 54 engages a connected to the magnet 12 pin 56 a.
- a distance between the respective pins 56 and axes 48 increases along the rail 46 from magnet position to magnet position, for which reason the cranks 52 also become longer in each case.
- a change in the magnetic assembly 10 is accomplished such that all the gears 50, in turn, to a toothed drive pulley 58 is associated ⁇ which engages all of the gears 50 at the same time.
- the drive pulley 58 is rotatably mounted about a drive axis 60, which is parallel to the rotation axis 4, but offset eccentrically to this. Is rotated about the drive shaft 60, the drive pulley 58, ⁇ 50 moves all of the gears by the same rotational angle or rotated and the cranks 52 pivoted accordingly. Due to the different effective lever lengths to the pin 56, however, the magnets 12 are then displaced on the rail 46 by different distances and therefore by different Win ⁇ keldifferenzen about the axis of rotation 4.
- FIGS. 7 and 8 show a similar but alternative embodiment to FIG. 6. All the cranks 52 are rotatably mounted on the rail 46 again by means of the respective axes 48. The combination of gears 50 and drive pulley 58 is here replaced by a
- Fig. 7 shows the push rod 64 and, by way of example, three of the cranks 52 in a basic position.
- Fig. 8 is the
- Push rod 64 moved in the direction of arrow 65.
- the three exemplary illustrated cranks 52 thus rotate about their axes 48 by the same angle of - in the example - 25 °. Due to the respective different lengths I i> 1 2 > I3 between axis 48 and pin 56, the respective magnets 12 move by different distances on the rail 46. Relative to the axis of rotation 4 so results in angle ⁇ adjustments of the magnets 12 of 4 °, 3 ° and 2 °.
- FIG. 9 corresponds Wesentli ⁇ chen that of Fig. 6, wherein even the gears 50 are hold beibe- here. Only the drive pulley 58 is replaced by a jointly acting on all gears chain 66, which is driven by a drive 68.
- Fig. 10 shows schematically the Erzaufleungslui in egg ⁇ nem drum separator shown in FIG. 1.
- the feed material 22 is supplied to the actual separation process 70, which takes place in the Sepa ⁇ rationszone 18th According to the sheath 32, the breakdown behavior of the feed 22 in the value of ⁇ material stream 28 and waste stream 30, now results is performed (see a concentrate analysis is 72 in which ei ⁇ ne actual size of a measured I with a measuring device 74 Pro ⁇ zesshongs 78 determines see also Fig. 1). If the comparison is satisfied ⁇ cold out, nothing further is done. If a significant deviation between setpoint size S and actual size I is ascertained, an adaptation of control variables in the form of process parameters 34 takes place along arrow 80, ie an adaptation of the relative positions R of magnets 12 in separation process 70.
- FIG. 11 shows schematically the representation of a control loop for the separation process 70, to which the setpoint quantity S is supplied as an input variable, for example an iron concentration in percent or a gangue concentration in percent.
- Vergli- chen the target size S with the measurement result of the Gauge ⁇ tes 74, ie the process value 78.
- the resultant error Ae is supplied to a controller 82nd A rule ⁇ distance 84 which the adaptation of the control parameters, so the process parameter 34 is used in the form of the relative positions of R, in addition, a disturbance takes 86 influence, resulting in the actual size I result.
- the process value 78 is, for example, a concentration of iron in% in the material flow 28.
- the disturbance variable 86 is the freeness or, alternatively or additionally, the content of gangue particles or the degree of pulping. The actual size I then did as a ⁇ neuter iron content in Wertstoffström 28 turns.
- the process value 78 is set by the sheath behavior 32 or conditioned by it and thus a measure of the sheath behavior 32.
- the sheath behavior 32 can be set by the parameters 34 in the form of the relative positions R, which then affects the process value 78.
- the adaptation of the electromagnet system, ie, the magnet assembly 10 to the Separationsaufga ⁇ be, that is, the sheath 32 behavior possible through adjustment of the current flowing through the E-magnetic current I.
- ⁇ ⁇ ⁇ ⁇ I n / 1, wherein the current I from outside the machine, so the drum separator 2 and the drum 6 is both manually and automatically adjusted. Further adjustment measures with regard to the relative positions R - as explained above - can nevertheless also be applied to
- Electromagnet 12 may be necessary to ermögli ⁇ chen complete, fle ible ⁇ adaptation to the material to be separated. Including, for example, the above-mentioned adjustment of the distance of the electromagnets 12 to each other.
- the permanent magnets 12 do not have the property of the underlying altering the field strength adjustable current I, thus changing the relative position R of the (single-NEN) permanent magnets 12 in the radial and / or tangential direction take place with respect to the axis of rotation 4 within the drum 6. In an advantageous embodiment, this shift should not take place manually but be regulated or automated.
- Fig. 12 shows that there is a negative correlation between grade of concentrate g and recovery r.
- Each separation process must be adapted to a desired separation goal, which consists of a combination of a defined grade g and a defined recovery r. If, due to the change in the mineralogical composition of the deposit, the input stream (feedstock 22) or its composition input into the separation plant, ie the drum separator 2, changes to accommodate the same grade-recovery ratio, an adaptation of the magnet set, ie Magnet assembly 10 may be necessary. This adaptation takes place at ⁇ as an additional or even substituie ⁇ -saving option to the previous known changing other process parameters such as pulp density, flow, or exchanged from ⁇ magnet set.
- grade / recovery are decisively influenced by the magnetic attraction force acting on the ferromagnetic / ferrimagnetic iron particles, that is to say the magnetic field 26 in the separation zone 18.
- This is itself by the likes ⁇ -magnetic field intensity / flux density, magnetic permeability or susceptibility of iron, "history" of the Magneti ⁇ tion, particle volume, mineralogical composition of the particles (iron content), particle shape, temperature and by the distance of the magnets 12 influenced each other.
- Pulp -7 magnet set must be closer to the drum wall
- Magnetic set must be closer to drum wall
- FIG. 13 shows a further alternative for changing the relative position R of the magnets 12 to the rotation axis 4.
- the magnets are moved here with respect to an axis 88 that is parallel to the axis of rotation 4.
- Each magnet 12 is characterized by individual adjustment in the radial direction. It applies to the radii to the axis of rotation 88: rl, r2 and r3 can all be different in pairs, wherein for the situation shown: rl>r2> r3.
- the radial displacement is effected by electromechanical actuators 90.
- the machine bed 16 is designed here as a separator trough. Again, there is the setting of a specific magnetic field profile.
Landscapes
- Processing Of Solid Wastes (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Sorting Of Articles (AREA)
- Combined Means For Separation Of Solids (AREA)
- Centrifugal Separators (AREA)
Abstract
Description
Claims
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2014108887/03A RU2014108887A (ru) | 2011-08-10 | 2012-07-30 | Магнитный барабанный сепаратор и способ его работы |
| BR112014003093A BR112014003093A2 (pt) | 2011-08-10 | 2012-07-30 | separador de tambor magnético e método para operar o mesmo |
| US14/236,800 US9016478B2 (en) | 2011-08-10 | 2012-07-30 | Magnetic drum separator and method for operation thereof |
| EP12745811.5A EP2723500A1 (de) | 2011-08-10 | 2012-07-30 | Magnetischer trommelscheider und verfahren zu dessen betrieb |
| AU2012292992A AU2012292992A1 (en) | 2011-08-10 | 2012-07-30 | Magnetic drum separator and method for operation thereof |
| CN201280039154.0A CN103732328B (zh) | 2011-08-10 | 2012-07-30 | 磁性筒式分选机及其运行方法 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP11177103A EP2556894A1 (de) | 2011-08-10 | 2011-08-10 | Magnetischer Trommelscheider |
| EP11177103.6 | 2011-08-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2013020849A1 true WO2013020849A1 (de) | 2013-02-14 |
Family
ID=46642498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2012/064864 Ceased WO2013020849A1 (de) | 2011-08-10 | 2012-07-30 | Magnetischer trommelscheider und verfahren zu dessen betrieb |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US9016478B2 (de) |
| EP (2) | EP2556894A1 (de) |
| CN (1) | CN103732328B (de) |
| AU (1) | AU2012292992A1 (de) |
| BR (1) | BR112014003093A2 (de) |
| RU (1) | RU2014108887A (de) |
| WO (1) | WO2013020849A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022104337A1 (de) | 2022-02-23 | 2023-08-24 | IMRO-Maschinenbau GmbH | Separationstrommel und Verfahren zum Betrieb einer Separationstrommel |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL2001431C2 (nl) | 2008-04-02 | 2009-10-05 | Univ Delft Tech | Werkwijze voor het scheiden van een afvalstroom. |
| PL2412452T3 (pl) | 2010-07-28 | 2013-10-31 | Adr Tech B V | Urządzenie rozdzielające |
| NL2006306C2 (en) * | 2011-02-28 | 2012-08-29 | Inashco R & D B V | Eddy current seperation apparatus, separation module, separation method and method for adjusting an eddy current separation apparatus. |
| EP2556894A1 (de) * | 2011-08-10 | 2013-02-13 | Siemens Aktiengesellschaft | Magnetischer Trommelscheider |
| US8807344B2 (en) | 2012-03-19 | 2014-08-19 | Mid-American Gunite, Inc. | Adjustable magnetic separator |
| CN105223902A (zh) * | 2015-11-05 | 2016-01-06 | 张荣斌 | 一种矿山用盘式磁选机的自动控制系统及方法 |
| ITUA20163952A1 (it) * | 2016-05-11 | 2017-11-11 | Lorenzo Musa | Macchina elettromagnetica per selezionare le sementi |
| CN106747705A (zh) * | 2017-03-21 | 2017-05-31 | 中合生态农业科技有限公司 | 餐厨垃圾好氧生化处理系统和方法 |
| CN115472379B (zh) * | 2022-11-14 | 2023-03-10 | 四川省川机工程技术有限公司 | 一种用于大电流强磁的磁力调节系统 |
| CN116237157B (zh) * | 2022-12-22 | 2024-06-18 | 山东兴盛矿业有限责任公司 | 一种基于磁变量的选矿系统 |
| CN116474936A (zh) * | 2023-05-16 | 2023-07-25 | 四川省川机工程技术有限公司 | 一种变距强磁力调节系统及赤泥磁选分离装置 |
| CN116328941B (zh) * | 2023-05-29 | 2023-07-28 | 四川省川机工程技术有限公司 | 基于生产过程监控的磁场即时调节系统及调节方法 |
| CN120115288B (zh) * | 2025-05-12 | 2025-08-19 | 杭州泰恩智达装备科技有限公司 | 磁性分离方法及生产系统 |
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| GB152549A (en) * | 1919-12-24 | 1920-10-21 | Francisco Quinonero | Improvements in or relating to magnetic separators for treating ferrous ores |
| US1729008A (en) | 1929-09-24 | Method and means for separating paramagnetic ores from their dia | ||
| US2785801A (en) | 1954-09-27 | 1957-03-19 | Fur Unternehmungen Der Eisen U | Permanent magnet separator |
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-
2011
- 2011-08-10 EP EP11177103A patent/EP2556894A1/de not_active Withdrawn
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2012
- 2012-07-30 EP EP12745811.5A patent/EP2723500A1/de not_active Withdrawn
- 2012-07-30 CN CN201280039154.0A patent/CN103732328B/zh not_active Expired - Fee Related
- 2012-07-30 US US14/236,800 patent/US9016478B2/en not_active Expired - Fee Related
- 2012-07-30 WO PCT/EP2012/064864 patent/WO2013020849A1/de not_active Ceased
- 2012-07-30 RU RU2014108887/03A patent/RU2014108887A/ru not_active Application Discontinuation
- 2012-07-30 AU AU2012292992A patent/AU2012292992A1/en not_active Abandoned
- 2012-07-30 BR BR112014003093A patent/BR112014003093A2/pt not_active IP Right Cessation
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| US1729008A (en) | 1929-09-24 | Method and means for separating paramagnetic ores from their dia | ||
| GB100063A (en) * | 1915-02-09 | 1916-05-11 | Krupp Ag Grusonwerk | Improvements in or relating to Magnetic Separators. |
| GB152549A (en) * | 1919-12-24 | 1920-10-21 | Francisco Quinonero | Improvements in or relating to magnetic separators for treating ferrous ores |
| US2785801A (en) | 1954-09-27 | 1957-03-19 | Fur Unternehmungen Der Eisen U | Permanent magnet separator |
| DE1583773A1 (de) * | 1967-03-01 | 1970-09-24 | Aerofall Mills Ltd | Steuervorrichtung fuer schnell laufende magnetische Trommel-Separatoren |
| DE8414955U1 (de) * | 1984-05-16 | 1985-06-05 | Klöckner-Humboldt-Deutz AG, 5000 Köln | Vorrichtung zur Aufrechterhaltung einer bestimmten Temperatur im Trommelmantel eines Magnetscheiders, insbesondere eines Mantelringscheiders |
| WO1998019795A1 (en) | 1996-11-08 | 1998-05-14 | Arvidson Bo R | Material separator |
| RU2220775C1 (ru) | 2002-04-29 | 2004-01-10 | Институт физики им. Л.В. Киренского СО РАН | Барабанный магнитный сепаратор с инверсными магнитными полями |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022104337A1 (de) | 2022-02-23 | 2023-08-24 | IMRO-Maschinenbau GmbH | Separationstrommel und Verfahren zum Betrieb einer Separationstrommel |
| DE102022104337B4 (de) | 2022-02-23 | 2024-05-16 | IMRO-Maschinenbau GmbH | Separationstrommel und Verfahren zum Betrieb einer Separationstrommel |
Also Published As
| Publication number | Publication date |
|---|---|
| BR112014003093A2 (pt) | 2017-02-21 |
| EP2556894A1 (de) | 2013-02-13 |
| AU2012292992A1 (en) | 2014-02-20 |
| CN103732328B (zh) | 2016-09-14 |
| US20140216988A1 (en) | 2014-08-07 |
| US9016478B2 (en) | 2015-04-28 |
| CN103732328A (zh) | 2014-04-16 |
| RU2014108887A (ru) | 2015-09-20 |
| EP2723500A1 (de) | 2014-04-30 |
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