Holder and method for adjusting position of a magnetic separator of a conveyor

Abstract

A system, holder, and method for adjusting position of a magnetic separator (110) of a conveyor (120), including supporting (610) a magnetic separator (110) by a carrier support (10) using a plurality of suspenders (145) to hang the magnetic separator (110) from the carrier (130, 510); supporting (620) the carrier (130, 510) by a carrier support (140); and moving (630) the carrier support (140) by a gap actuator (180) such that the carrier (130, 510) moves the magnetic separator (110) between a first position and a second position.

Description

[0001] HOLDER AND METHOD FOR ADJUSTING POSITION OF A MAGNETIC SEPARATOR

[0002] OF A CONVEYOR

[0003] TECHNICAL FIELD

[0004] The present disclosure generally relates to a holder for a magnetic separator. The disclosure relates particularly, though not exclusively, to a holder for adjusting the position of a magnetic separator of a conveyor.

[0005] BACKGROUND

[0006] This section illustrates useful background information without admission of any technique described herein representative of the state of the art.

[0007] Magnetic separators are used to separate magnetic and weakly magnetic material or contaminants from non-magnetic matter. The magnetic separation process may be continuously carried out on a moving stream of material, such as mineral material transported on a conveyor. Magnetic separators are used, among others, in mining and mineral processing, recycling, and plastics industries.

[0008] The magnetic separation efficacy is strongly dependent on the position of the magnet with respect to the conveyor transporting the material and the characteristics of the material being transported on the conveyor. Especially in mining and mineral processing industry, where the material size may vary drastically from sand-like particles to boulders, the correct positioning of the magnetic separator with respect to the conveyor is critical. A need exists for a holder of a magnetic separator that enables improved positioning of the magnetic separator while acknowledging especially the characteristics of mineral material processing.

[0009] SUMMARY

[0010] The appended claims define the scope of protection. Any examples and technical descriptions of apparatuses, products and / or methods in the description and / or drawings not covered by the claims are presented not as embodiments of the invention but as background art or examples useful for understanding the invention.

[0011] According to a first example aspect there is provided a holder for a magnetic separator of a conveyor, comprising: a carrier; a plurality of suspenders configured to hang the magnetic separator from the carrier below the carrier; a carrier support configured to support the carrier; and a gap actuator configured to move the carrier support such that the carrier moves the magnetic separator between a first position and a second position.

[0012] The first position and the second position of the magnetic separator may respectively correspond to a first gap and a second gap between the magnetic separator and the conveyor. In an example embodiment, the magnetic separator moves along a movement path defined by the carrier support.

[0013] The holder may be configured to allow the magnetic separator to move evasively when a load carried by the conveyor pushes the magnetic separator or a protective structure in connection with the magnetic separator

[0014] The first gap may be different than the second gap. The difference between the first gap and the second gap may be the same as a distance between the first position and the second position. The difference between the first gap and the second gap may differ by at most 5 %, 10 %, or 20 % from the distance between the first position and the second position.

[0015] The carrier support may comprise a four-bar linkage. The four-bar linkage may comprise a bottom bar that is in the longitudinal direction of the conveyor.

[0016] The carrier support may be configured to mitigate twisting of the magnetic separator. The carrier support may be provided twisting resistance through the four-bar linkage. The carrier support may be provided twisting resistance by the four-bar linkage. The carrier support may be provided twisting resistance by a structure that enables the magnetic separator to move evasively in a direction of the load carried by the conveyor while mitigating perpendicularly directed movement of the magnetic separator.

[0017] The carrier support may be configured to maintain the carrier at a constant angle throughout the moving of the carrier between the first position and the second position.

[0018] The holder may comprise a rail configured to support the carrier such that the carrier support is movable along the rail and that the magnetic separator remains in an angle at least partially defined by the rail.

[0019] The carrier support may be further configured to lock the carrier in a lateral direction of the conveyor while allowing the movement of the carrier.

[0020] The holder may comprise an interconnector. The carrier support may comprise one or more branches for each lateral side of the conveyor coupled above the conveyor by the interconnector.

[0021] The carrier may comprise more than two different suspender hanging points in the longitudinal direction of the conveyor.

[0022] Two or more of the suspenders may comprise one or more rigid members pivotably coupled at ends thereof.

[0023] The holder may further comprise one or more flexible diagonal stabilizers in parallel with the suspenders.

[0024] The holder may further comprise a rest member configured to at least partially bear weight of the carrier when in use so as to relieve the gap actuator of some gravitational force caused by the carrier and the magnetic separator.

[0025] The suspenders may be flexible or pivotable. At least one of the suspenders may be or comprise a chain. At least one of the suspenders may be or comprise a wire or a steel rope or a synthetic rope.

[0026] The suspenders may be non-magnetic. Advantageously, non-magnetic suspenders may avoid collecting magnetic rubble on operating the magnetic separator.

[0027] The suspenders may be electrically conductive. Advantageously, electrically conductive suspenders may avoid inducing static electricity discharges. Advantageously, electrically conductive suspenders may improve operation of a residual current device coupled with the magnetic separator.

[0028] The rest angle of the magnetic separator may be adjusted by adjusting the lengths of the suspenders. The height of the magnetic separator at rest position may be adjustable by adjusting the lengths of the suspenders.

[0029] The suspenders may be rigid.

[0030] The suspenders may be configured to enable pivoting away of the magnetic separator from the rest position due to collision with a load transported on the conveyor. The suspenders may be configured to gravitationally return the magnetic separator to the rest position once the load has passed the magnetic separator. The rest angle may remain unchanged with respect to the carrier when the magnetic separator moves away from the rest position and back to the rest position. The holder may comprise a pivot joint coupling the suspender to the magnetic separator. The holder may comprise a pivot joint coupling the suspender to the carrier. Advantageously, the pivot joints may enable the magnetic separator to automatically evade colliding material that travels on the conveyor. Further advantageously, the pivot joints arranged at the suspenders may enable controlling an angle of the magnetic separator throughout its evading movement.

[0031] In some or all implementations, the angle of the magnetic separator may be controlled during the evading movement such that a downstream side of the magnetic separator distances less from the conveyor than an upstream side of the magnetic separator. By distancing the downstream side less, clearing of a jam formed under the magnetic separator may be simply performed by reversing the conveyor.

[0032] The gap actuator may be advantageous for clearing a jam formed between the magnetic separator and the conveyor.

[0033] The holder may comprise a support through which the carrier is configured to support the magnetic separator above the conveyor. The holder may comprise a pivot joint configured to allow the support to rotate in a first rotational direction away from a rest angle in response to that a load carried by the conveyor pushes the support or a structure attached to the support. The pivot joint may be further configured allow the support to rotate in a direction opposite to the first rotational direction until the support returns to the rest angle in response to that the load carried by the conveyor has passed the support or the structure attached to the support.

[0034] The support may comprise an inner attachment point, and an outer attachment point for attaching the magnetic separator. The inner attachment point may be closer to the pivot joint than the outer attachment point. The pivot joint, the inner attachment point, and the outer attachment point may be positioned such that on rotating from the rest position in the first rotational direction, a component of movement in direction of the conveyor at the inner attachment point is smaller than a component of movement against the direction of the conveyor at the outer attachment point, for maintaining the magnetic separator aligned with a substantially same portion of the conveyor when tilting away from a colliding load.

[0035] The carrier may comprise wheels to move the carrier along the rail. The carrier may comprise rollers to move along the rail. The carrier may comprise bearings to move along the rail. The carrier (and the rail) may comprise sliding surface to enable movement along the rail.

[0036] The position of the carrier may be adjustable while the conveyor is running. The position of the carrier may be adjusted when the conveyor is turned off.

[0037] The rail may be connected to a platform frame of a mineral material processing plant. The rail may be a part of a main frame of a material processing plant. The conveyor may have a support frame configured to be supported by the main frame. The rail may be attached to the main frame, optionally after construction of the main frame. Advantageously, a separate support frame for the magnetic separator holder may not be required but instead formed, e.g., integrally with the support.

[0038] The rail may be stationary with respect to the support frame of a conveyor. The rail may be stationary with respect to the conveyor. Advantageously, the magnetic separator holder may allow retaining the position of the magnetic separator with respect to the conveyor when an inclination angle of the conveyor is changed.

[0039] The rail may be linear. The rail may be non-linear. The rail may be partially non-linear.

[0040] The rail may be shaped such that adjusting the position of the carrier along the rail automatically changes the angle of the support and the magnetic separator with respect to the conveyor. Advantageously, by adjusting the gap, the angle of the support is changed accordingly at the same time.

[0041] The rail may comprise a stopper to limit the movement of the carrier. The rail may comprise a first stopper to define the first position of the carrier. The rail may comprise a second stopper to define the second position of the carrier. The rail may comprise a first stopper and a second stopper to define both the first position and the second position of the carrier, respectively. Advantageously, accidentally moving the carrier too far and, for example, crashing the magnetic separator against the conveyor and / or to the support frame of the conveyor may be prevented.

[0042] The gap actuator may comprise one or more hydraulic cylinders to move the carrier. The gap actuator may comprise one or more pneumatic cylinders. The gap actuator may comprise one or more electric cylinders. The gap actuator may comprise a winch.

[0043] The gap actuator may be configured to lift the carrier towards the first position (to increase the gap) by pushing (elongating). The gap actuator may be configured to lower the carrier towards the second position (to decrease the gap) by pulling (contracting). The gap actuator may be configured to lift the carrier towards the first position (to increase the gap) by pulling. The gap actuator may be configured to pull the carrier towards the second position (to decrease the gap). The lowering of the carrier towards the second position may be driven by gravity. Advantageously, the gap actuator may be positioned in different ways with respect to the conveyor. Therefore, the holder and the gap actuator may be installed to and are compatible with various conveyors. The rest angle may remain unchanged with respect to ground. The rest angle may remain unchanged with respect to the carrier when the pivot joint allows the support to rotate in the first rotational direction away from the rest angle and back to the rest angle. The rest angle may remain unchanged with respect to the carrier when the magnetic separator moves away from the rest position and back to the rest position. The rest angle may remain unchanged with respect to the conveyor.

[0044] The holder may comprise an angle actuator to adjust the rest angle. The angle actuator may be manually operated. The angle actuator may be remotely operated. The angle actuator may comprise an adjustment screw. The angle actuator may comprise a hydraulic cylinder. The angle actuator may comprise a pneumatic cylinder. The angle actuator may comprise an electric cylinder.

[0045] The structure attached to the support and pushed by the load carried by the conveyor may be or comprise a bumper shield. The structure attached to the support and pushed by the load carried by the conveyor may be or comprise the magnetic separator. The protective structure of the magnetic separator may be a bumper shield.

[0046] The pivot joint may be located suitably for gravitational returning of the support to the rest angle. The pivot joint may be positioned such that the rotation of the support in the first rotational direction moves the support and any structures that rotate with the support apart from the conveyor in beginning of the rotation in the first rotational direction.

[0047] The pivot joint may be attached to the support.

[0048] The pivot joint may be attached to the carrier. The pivot joint may be attached to a top portion of the carrier with an angled part. A low portion of the angled part may abut the carrier so restricting pivoting of the support towards the conveyor beyond the rest angle.

[0049] The conveyor angle may be adjustable. The conveyor may be a mobile conveyor. The conveyor may be a stationary conveyor.

[0050] According to a second example aspect, there is provided a method for adjusting position of a magnetic separator of a conveyor, the method comprising: supporting a magnetic separator by a carrier support using a plurality of suspenders to hang the magnetic separator from the carrier; supporting the carrier by a carrier support; and moving the carrier support by a gap actuator such that the carrier moves the magnetic separator between a first position and a second position.

[0051] The magnetic separator may be allowed to move evasively away from a rest position when pushed by a load carried by the conveyor.

[0052] The method may comprise returning the magnetic separator to the rest position in response to that the load carried by the conveyor has passed the magnetic separator or the structure attached to the support.

[0053] The method may further comprise adjusting the position of the carrier between the first position and the second position during operation of the conveyor. The method may comprise adjusting the position of the carrier between the first position and the second position when the conveyor is turned off. The position of the carrier may be adjusted by a gap actuator comprising one or more hydraulic cylinders, pneumatic cylinders, electric cylinders, or winches.

[0054] The method may further comprise providing a rail shaped such that adjusting the position of the carrier along the rail automatically changes the angle of the support and the magnetic separator with respect to the conveyor. The rail may be linear. The rail may be non-linear. The rail may be partially non-linear. A rail of the support frame of the conveyor may form the rail along which the carrier is configured to move. The rail may be part of the support frame of the conveyor. The rail may be attached to the support frame of the conveyor. The rail may be attached to a platform frame of a (mobile) mineral material processing plant. The rail may be stationary with respect to the support frame of the conveyor. The rail may be stationary with respect to the conveyor. The rail may be stationary with respect to the mobile mineral material processing plant.

[0055] The method may further comprise adjusting the rest angle. The rest angle may be manually adjusted by an operator. The rest angle may be automatically adjusted. The method may further comprise providing an angle actuator to adjust the rest angle. The angle actuator may comprise an adjustment screw, hydraulic cylinder, pneumatic cylinder, or electric cylinder.

[0056] The method may comprise keeping the rest angle unchanged with respect to ground. The method may comprise keeping the rest angle unchanged with respect to the carrier when the pivot joint allows the support to rotate in the first rotational direction away from the rest angle and back to the rest angle. The method may comprise keeping the rest angle unchanged with respect to the conveyor.

[0057] The method may further comprise providing one or more stopper to limit the movement of the carrier along the rail. The stopper may define the first position of the carrier. The stopper may define the second position of the carrier. A first stoppers may define the first position and a second stopper the second position of the carrier between which the carrier is configured to be movable.

[0058] The method may further comprise gravitationally returning the magnetic separator to the rest angle due to the suitable location of the pivot joint. The method may further comprise positioning the pivot joint such that the rotation of the support in the first rotational direction moves the support and any structures that rotate with the support apart from the conveyor in beginning of the rotation in the first rotational direction.

[0059] The method may further comprise adjusting the angle of the conveyor.

[0060] The method may further comprise measuring a current height of material that is being conveyed by the conveyor towards the magnetic separator. controlling the gap actuator to move the carrier according to the current height so as to regulate a gap between the magnetic separator and the material conveyed by the conveyor.

[0061] According to a third example aspect, there is provided a system for mineral material processing comprising a holder of the first or second example aspect. The system may further comprise a magnetic separator. The system may further comprise a conveyor. The system may further comprise a crusher.

[0062] The system may further comprise a height measurement circuitry configured to measure current height of material that is being conveyed by the conveyor towards the magnetic separator.

[0063] The system may further comprise a collision control circuitry configured to control the gap actuator to move the carrier according to the current height so as to regulate a gap between the magnetic separator and the material conveyed by the conveyor.

[0064] According to a fourth example aspect, there is provided a mobile mineral material processing plant comprising the holder of the first example aspect or the system of the third example aspect. The mobile mineral material processing plant may comprise a platform frame. The mobile mineral material processing plant may comprise a crusher supported by the platform frame. The mobile mineral material processing plant may further or alternatively comprise a screen supported by the platform frame. The mobile mineral material processing plant may further or alternatively comprise a side conveyor supported by the platform frame. The mobile mineral material processing plant may further or alternatively comprise an exit conveyor supported by the platform frame. The mobile mineral material processing plant may further or alternatively comprise a ground support configured to support the mobile mineral material processing plant onto the ground. The ground support may be configured to enable movement of the mobile mineral material processing plant while maintaining a ground contact. The ground support may comprise a sledge. Alternatively, or additionally, the ground support may comprise one or more wheels. Alternatively, or additionally, the ground support may comprise one or more crawler tracks. Alternatively, or additionally, the ground support may comprise one or more sledges. The mobile mineral material processing plant may be self-propelling.

[0065] Different non-binding example aspects and embodiments have been illustrated in the foregoing. The embodiments in the foregoing are used merely to explain selected aspects or steps that may be utilized in different implementations. Some embodiments may be presented only with reference to certain example aspects. It should be appreciated that corresponding embodiments may apply to other example aspects as well.

[0066] BRIEF DESCRIPTION OF THE FIGURES

[0067] Some example embodiments will be described with reference to the accompanying figures, in which:

[0068] Fig. 1 shows a 3D view of a holder for a magnetic separator of a conveyor according to an example embodiment;

[0069] Fig. 2 shows a side-view of a holder for a magnetic separator of a conveyor according to an example embodiment;

[0070] Fig. 3 shows a top view of holder for a magnetic separator of a conveyor according to an example embodiment;

[0071] Fig. 4 shows a cross-section of a holder for a magnetic separator of a conveyor according to an example embodiment;

[0072] Figs. 5A to 5E show 3D views of a holder for a magnetic separator of a conveyor according to another example embodiment;

[0073] Fig. 6 shows a flow chart according to an example embodiment; and

[0074] Fig. 7 shows a mineral material processing plant according to an example embodiment.

[0075] DETAILED DESCRIPTION

[0076] In the following description, like reference signs denote like elements or steps.

[0077] The embodiments described in more detail below describe a holder for a magnetic separator of a conveyor. The embodiments further describe a method for adjusting the position of a magnetic separator of a conveyor.

[0078] Fig. 1 shows holder 100 for a magnetic separator 110 of a conveyor 120 according to an example embodiment. Figs. 2 and 3 show a side-view and a top-view, respectively, of a holder 100 for a magnetic separator 110 of a conveyor 120 according to example embodiments.

[0079] In an example embodiment, the conveyor 120 is a mobile conveyor. In an example embodiment, the conveyor 120 is a stationary conveyor. In an example embodiment, the conveyor angle is adjustable. In an example embodiment, the conveyor 120 is a conveyor of a mineral material processing plant. In an example embodiment, the mineral material processing plant is stationary. In an example embodiment, the mineral material processing plant is a mobile mineral material processing plant. In an example embodiment, the conveyor 120 is a conveyor of a crusher.

[0080] The conveyor 120 comprises guard walls 125 to prevent material from dropping accidentally off from the conveyor 120. In an example embodiment, the guard wall(s) 125 comprises a guard rail. In an example embodiment, there is no guard wall 125, or there is an opening in the guard wall 125, at the section of the conveyor 120 below the magnetic separator 110. This way, extraction of the material collected by the magnetic separator 110 to the side of the conveyor 120 may be made easier and more efficient.

[0081] The holder 100 comprises a carrier 130 for carrying the magnetic separator 110. The carrier 130 is supported by a carrier support 130 that is configured to move the carrier 140 and the magnetic separator 110 between a first position and a second position to cause respective different first and second gaps between the magnetic separator 110 and the conveyor 120. The first position is the position of the magnetic separator 110 farthest away from the conveyor 120, i.e., maximum allowed or possible gap between the magnetic separator 110 and the conveyor 120. The second position is the position of the magnetic separator 110 closest to the conveyor 120, i.e., minimum allowed or possible gap between the magnetic separator 110 and the conveyor 120.

[0082] In an example embodiment, a stopper 175 limits the movement of the carrier support 130. The stopper 175 is attached to a rail 170 to prevent movement of the carrier support 140 beyond the stopper 175. In an example embodiment, a first stopper 175 defines the first position of the carrier support 140. In an example embodiment, a second stopper 175 defines the second position of the carrier support 140. In an example embodiment, a first stopper 175 and a second stopper 175 define the first position and the second position of the carrier support 140, respectively. One stopper 175 is shown in Figs. 1 , 2, and 4.

[0083] In an example embodiment, the position of the carrier support 140 is adjustable while the conveyor 120 is running. Therefore, the position of the carrier 130 and thus the position of the magnetic separator 110 may be feasibly adjusted according to, for example, fluctuations in size of the material transported on the conveyor 120 without needing to pause the conveyor 120.

[0084] The carrier support 130 is configured to support the magnetic separator 110 above the conveyor 120. In an example embodiment, the carrier support 140 is connected to the carrier 130 pivotably, as exemplified by Figs. 1 to 3. In an example embodiment, the carrier 130 is configured to hold the magnetic separator 110 above the guard wall 125 such that the magnetic separator 110 does not contact the guard wall 125 or the conveyor 120. Advantageously, the use carrier support 140 (and carrier 130) to support the magnetic separator 110 above the conveyor 120 may remove or reduce a need to support the magnetic separator 110 with unnecessarily long flexible suspenders that might mitigate or hinder lateral movement of separated metals.

[0085] In an example embodiment, the carrier 130 has an L-shaped side profile. The L-shaped profile is readily visible, for example, in Figs. 2 and 4. In an example embodiment, first arm(s) (130a), e.g., longer arm(s) of the L profile, carries (carry) the magnetic separator 110. In an example embodiment, second arm(s), e.g., shorter arm(s) (130b) of the L profile is (are) configured to rest against the carrier 130 when the carrier support 130 is at a rest angle, as in embodiments according to Fig. 1. In an example embodiment, the second arms(s) is (are) fixedly attached to the carrier 140. This advantageously improves stability to the carrier 130 and magnetic separator 110.

[0086] At the rest angle, the magnetic separator 110 is at a stable rest position. The magnetic separator 110 is gravitationally driven towards the rest position and rest angle. In an example embodiment, the carrier 130 rests against the carrier support 140 when at rest position at rest angle, thus determining the rest angle and rest position of the magnetic separator 110. In an example embodiment, the magnetic separator 110 freely hangs from the suspenders 145 at the rest position. In such embodiments, the carrier 130 may be fixed or pivotable. In an example embodiment, the rest angle and height of the magnetic separator 110 from the conveyor 120 is adjustable by adjusting the lengths of the suspenders 145.

[0087] In an example embodiment, a pivot joint 160 is positioned in the carrier 130 in the corner of the L-shaped profile, i.e., where the shorter and longer arms of the L meet. In an example embodiment, the support 130 is attached to the carrier 140 via the pivot joint 160. Due to the pivot joint 160, the carrier 130 may be pivotable. Advantageously, sufficiently long flexible support 130 to may allow evasive movement of the magnetic separator 110 regardless of vertical position thereof. Even at a top position, the magnetic separator 110 may still be capable of sufficiently evading colliding objects that travel on the conveyor 120.

[0088] In an example embodiment, the holder 100 does not comprise a pivot joint 160. That is, the support 130 may not be pivotable. In an example embodiment, the carrier 130 is stationary with respect to the carrier support 140. In such embodiments, flexible or pivotable suspenders 145 may be used to still enable evasive movement and pivoting of the magnetic separator 110.

[0089] The support comprises suspenders 145 to connect the magnetic separator 110 to the carrier 130. In an example embodiment, the suspenders are flexible or pivotable. In an example embodiment, the suspenders 145 are rigid. In an example embodiment, the suspenders 145 comprise a chain.

[0090] In an example embodiment, the length of the suspenders 145 is adjustable. In an example embodiment, the length of each suspender 145 is individually adjustable. In an example embodiment, the length of the suspenders 145 is adjusted to adjust the angle of the magnetic separator 110. Length of the suspenders 145 may be adjusted to adjust the resting angle of the magnetic separator 110. For instance, a winch or a reeling system, or plurality of such adjustment systems, may be used to adjust flexible tie suspenders 145 to control the angle of the magnetic separator 110 with respect to the conveyor 120. In an example embodiment, the suspenders 145 are formed of flexible ties that extend from one side of the magnetic separator 110 to another. A mechanism may be provided to move such an extending flexible tide to some extent from one side to another so as to change an angle or tilt of the magnetic separator 110 without change of height. The angle or tilt may be adjustable by a tilt adjusting actuator. The tilt adjusting actuator may be configured to drive one or more rotating members, such as sprockets or shafts, over which the flexible tie is arranged. The tilt actuator may be a linear actuator. The tilt actuator may be a rotation actuator, such as a pneumatic or hydraulic or electric motor.

[0091] The carrier 130 comprises an inner attachment point(s) 150 and an outer attachment point(s) 155. The inner and outer attachment points 150, 155 are the points at which the suspenders 145 and the magnetic separator 110 connect. The magnetic separator 110 is attached to the support 130 through the inner and outer attachment points 150, 155. In an example embodiment, the inner attachment point 150 is located closer to a pivot joint 160 than the outer attachment point 155. In an example embodiment, where the support 130 is non-pivotable (i.e., holder 100 does not comprise a pivot joint 160), the inner attachment point(s) 150 is (are) the attachment point(s) located closest to the carrier support 140. In an example embodiment, the carrier 130 comprises a plurality of inner and / or outer attachment points 150, 155.

[0092] In an example embodiment, the pivot joint 160, the inner attachment point 150, and the outer attachment point 155 are positioned such that on rotating from the rest position in the first rotational direction, a component of movement in direction of the conveyor 120 at the inner attachment point 150 is smaller than a component of movement against the direction of the conveyor at the outer attachment point 155, for maintaining the magnetic separator 110 aligned with a substantially same portion of the conveyor 120 when tilting away from a colliding load.

[0093] In an example embodiment, the magnetic separator 110 is attached to the carrier 130 by chains (through the inner and outer attachment points 150, 155). In an example embodiment, the carrier 130 is pivotable (i.e., the holder 100 comprises a pivot joint 160). In an example embodiment, the carrier 130 is non-pivotable (i.e., the holder 100 does not comprise a pivot joint 160). The chains enable pivoting and evasive movement of the magnetic separator 110 additionally or alternatively to the pivot joint 160 due to colliding with objects transported on the conveyor 120 to avoid damages.

[0094] In an example embodiment, the holder 100 comprises a rail 170 configured to support the carrier support 140 such that the carrier support 140 is movable along the rail 170 and that the carrier 130, carried by the carrier support 140, remains in an angle at least partially defined by the rail 170. In an example embodiment, the carrier support 140 comprises wheels 145 to move along the rail 170. In an example embodiment, the carrier support 140 comprises rollers 145 to move along the rail 170. In an example embodiment, the carrier support 140 comprises bearings to move along the rail 170. In an example embodiment, the carrier support 140 and / or the rail 170 comprise sliding surface to enable movement of the carrier support 140 along the rail 170.

[0095] In an example embodiment, the rail 170 is a part of a main frame 190 of a material processing plant, preferably the rail 170 is a part of the frame of a mobile mineral material processing plant. In an example embodiment, the rail 170 is a part of a support frame of the conveyor 120. The support frame of the conveyor 120 may be configured to be supported by the main frame of the material processing plant. In an example embodiment, the rail 170 is connected to a platform frame of a mineral material processing plant. In an example embodiment, the rail 170 is connected to the main frame or the support frame, optionally after construction of the main frame or the support frame. Therefore, a separate support frame for the magnetic separator holder 100 may not be required. In an example embodiment, the holder 100 is retrofitted and attached to the frame of an existing material processing plant and / or conveyor 120.

[0096] In an example embodiment, the rail 170 is stationary with respect to the main frame of the material processing plant. In an example embodiment, the rail 170 is stationary with respect to the support frame of the conveyor 170. In an example embodiment, the rail 170 is stationary with respect to the conveyor 120. Advantageously, the position and alignment of the rail 170 with respect to a frame and / or the conveyor 120 may be kept constant.

[0097] In an example embodiment, the rail 170 is linear. In an example embodiment, the rail 170 is non-linear. In an example embodiment, the rail 170 is partially non-linear. Therefore, by adjusting the position of the carrier support 140 along the rail 170 may automatically change the angle of the carrier 130 and the magnetic separator 110 with respect to the conveyor 120 depending on the shape of the rail 170. Accordingly, the angle of the carrier 130 and magnetic separator 110 at different positions may be directly affected through the design of the rail 170 shape. For instance, at the first position, the magnetic separator 110 may be positioned parallel to the conveyor 120, whereas at the second position the magnetic separator 110 may be inclined with respect to the conveyor 120 having the outer attachment point 155 located closer to the conveyor 120 than the inner attachment point 150.

[0098] In an example embodiment, the rail 170 comprises a support section 170a. The support section 170a extends above the magnetic separator 110. The support section is preferably a part of the frame of a mobile mineral material processing plant. In an example embodiment, the support section 170a supports the magnetic separators 110. At the top position, the magnetic separator 110 may be in contact with the support section 170a, which prevents lateral and vertical movement of the magnetic separator 110.

[0099] In an example embodiment, the gap between the magnetic separator 110 and the conveyor 120 has constant height. In an example embodiment, the height profile of the gap between the magnetic separator 110 and the conveyor 120 decreases, i.e., constricts, in the transport direction of the conveyor 120. In an example embodiment, the gap height profile opens in the direction of transport of the conveyor 120, that is, the outer attachment point 155 is farther away from the conveyor 120 than the inner attachment point 150. The gap height profile, along the transport direction of the conveyor 120, depends on the rest angle and the angle at which the support 130 resides at a particular moment.

[0100] The holder 100 comprises a gap actuator 180 configured to move the carrier support 140 such that the magnetic separator 110 moves between a first position and a second position. The first position is the farthest possible position of the magnetic separator 110 from the conveyor 120. That is, the gap between the conveyor 120 and the magnetic separator 110 supported via the carrier support 140 and the carrier 130 is at maximum value. The second position is the closest possible position of the magnetic separator 110 to the conveyor 120. In other words, at the second position, the gap between the conveyor 120 and the magnetic separator 110 supported via the carrier support 140 and the carrier 130 is at its minimum. In an example embodiment, the first and / or second position is defined by the reach of the gap actuator 180, or gap actuators 180. In an example embodiment, the first and / or second position is defined by a stopper or stoppers 175.

[0101] The gap actuator 180 moves the carrier support 140 along the rail 170. In an example embodiment, the gap actuator 180 comprises a hydraulic cylinder to move the carrier support 140. In an example embodiment, the gap actuator 180 comprises a pneumatic cylinder. In an example embodiment, the gap actuator 180 comprises an electric cylinder. In an example embodiment, the gap actuator 180 comprises a winch. Therefore, different actuating mechanisms may be used.

[0102] The holder 100 may comprise a plurality of gap actuators 180. Two gap actuators are shown in Fig. 1 but other number of gap actuators, like 1 or 4, is possible too. In an example embodiment, first end of a gap actuator 180 is attached to the carrier support 140, and second end to the rail 170. In an example embodiment, the second end of the gap actuator 180 is attached to the main frame of a material processing plant, support frame of a conveyor 120, or to a separate support frame of the magnetic separator holder 100.

[0103] In an example embodiment, depending on the attachment points of the gap actuator 180, the gap actuator 180 is configured to lift the carrier support 140 towards the first position (to increase the gap) by pushing (elongating). In an example embodiment, the gap actuator 180 is configured to lower the carrier support 140 towards the second position (to decrease the gap) by pulling (contracting). That is, the gap actuator 180 is attached to a support frame below the conveyor 120. In an example embodiment, the gap actuator 180 is configured to lift the carrier support 140 towards the first position (to increase the gap) by pulling. In an example embodiment, the gap actuator 180 is configured to push the carrier support 140 towards the second position (to decrease the gap). That is, the gap actuator 180 is attached to a support frame and / or rail 170 above the conveyor as shown in Fig. 1. In an example embodiment, the lowering of the carrier support 140 towards the second position is driven by gravity. Therefore, the gap actuator 180 may be positioned in different ways with respect to the conveyor 120. Consequently, the holder 100 and the gap actuator 180 may adapted and installed to various conveyors 120 or material processing plants or systems.

[0104] In an example embodiment, the holder 100 comprises a pivot joint 160 configured to allow the carrier 130 to rotate in a first rotational direction away from a rest angle in response to that a load carried by the conveyor 120 pushes the carrier 130 or a structure attached to the carrier 130. In an example embodiment, the structure is a bumper shield 190. In an example embodiment, the structure is a magnetic separator 110. In an example embodiment, the bumper shield 190 protects the magnetic separator 110 from damage.

[0105] The pivot joint 160 is positioned such that the rotation of the carrier 130 in the first rotational direction moves the carrier 130 and any structures that rotate with the support carrier apart from the conveyor 120 in beginning of the rotation in the first rotational direction. That is, the pivot joint 160 enables the carrier 130 to rotate in a first rotational direction to effectively increase the gap between the magnetic separator 110 and the conveyor 120. In other words, the change of position of the magnetic separator 110 due to rotation of the carrier 130 about the pivot joint 160 is mainly vertical. Therefore, risk of damaging of the magnetic separator 110 may be reduced or even avoided. This is because the carrier 130 and magnetic separator 110 may rotate out of the way if, for instance, large mineral boulder with dimensions exceeding the gap between the magnetic separator 110 and the conveyor 120 is transported on the conveyor 120 and the boulder hits the magnetic separator 110 and pushes against it. Due to positioning of the pivot joint 160, the rotation does not substantially alter the position of the magnetic separator 110 in the drive direction of the conveyor 120, i.e. in the horizontal direction.

[0106] In an example embodiment, the evasive movement of the magnetic separator 110 is enabled by flexible or pivotable suspenders 145 without the pivot joint 160. In an example embodiment, the holder 100 comprises both flexible or pivotable suspenders 145 and the pivot joint 160.

[0107] In an example embodiment, the pivot joint 160 is attached to the carrier 130. In an example embodiment, the pivot joint 160 is attached to the carrier support 140. In an example embodiment, the pivot joint 160 is attached to a top portion of the carrier support 140 with an angled part. In an example embodiment, a low portion of the angled part may abut the carrier support 140 so restricting pivoting of the carrier 130 towards the conveyor 120 beyond the rest angle.

[0108] In an example embodiment, the carrier 130 and the magnetic separator 110 attached to it is at rest angle when the support 130 rests against the carrier support 140. The rest angle may be increased by an angle actuator 185. In an example embodiment, the carrier 130 is rotatable up to 45 degrees to the first rotational direction from the rest angle. In an example embodiment, the carrier 130 is rotatable more than 45 degrees to the first rotational direction.

[0109] In an example embodiment, the rest angle of the carrier 130 is determined relative to the rail 170. In an example embodiment, the rest angle of the carrier 130 and magnetic separator 110 is determined relative to the carrier support 140. In an example embodiment, the rest angle is determined relative to the conveyor 120. In an example embodiment, the rest angle remains unchanged with respect to the carrier support 140 when the pivot joint 160 allows the support to rotate in the first rotational direction away from the rest angle and back to the rest angle.

[0110] In an example embodiment, the rest angle depends on the shape and alignment of the rail 170 and an angle actuator 185. Also, depending on the selected reference point, the inclination of ground or conveyor angle may be relevant for defining the rest angle. In an example embodiment, the carrier 130 (and the magnetic separator 110 attached to it) is rotatable to the first rotational direction until the long arm of the carrier 130 is perpendicular with respect to the ground. In an example embodiment, the carrier 130 is rotatable to the first rotational direction until the long arm of the carrier 130 is perpendicular with respect to the conveyor 120. In an example embodiment, the carrier 130 is rotatable to the first rotational direction until the rotation is stopped by the rail 170 or by a rotation stopper (not shown) attached to the rail 170 or the carrier support 140. In an example embodiment, the carrier 130 is rotatable to the first rotational direction until the long arm of the carrier 130 is parallel to the rail 170.

[0111] In an example embodiment, a bumper shield 190 is attached to the carrier 130 such that it extends from the carrier 130 towards the conveyor 120 on the upstream side of the magnetic separator 110, i.e., on the side of the magnetic separator 110 wherefrom the load carried by the conveyor 120 is transported towards the magnetic separator 110. Thus, the bumper shield 190 protects the upstream side of the magnetic separator 110 from being hit by the load in case the magnetic separator 110 is positioned too low. The bumper shield 190 prevents the direct contact between the load, such as a large boulder, transported on the conveyor 120 and the magnetic separator 110. In an example embodiment, the bumper shield 190 is a plate or an inclined plate structure. In an example embodiment, the bumper shield 190 comprises a guard rail.

[0112] In an example embodiment, the pivot joint 160 is configured to rotate the carrier 130 in a direction opposite to the first rotational direction until the carrier 130 returns to the rest angle in response to that the load carried by the conveyor 120 has passed the magnetic separator 110 or a bumper shield attached to the carrier 130. In an example embodiment, flexible or pivotable suspenders 145 serve the same purpose. That is, the pivot joint 160, and / or suspenders 145, enables the carrier 130 to rotate in a second rotational direction towards the carrier support 140.

[0113] The pivot joint 160 may be positioned such that a carrier 130 may automatically rotate in the second rotational direction due to gravity unless prevented. In other words, the pivot joint 160 is located suitably for gravitational returning of the carrier 130 to the rest angle. Therefore, a carrier 130 tends to rotate as close to the carrier support 140 as possible and rests against the carrier support 140 unless actively pushed or held away from the carrier support 140. In an example embodiment, the carrier 130 automatically returns to the rest angle once the load carried by the conveyor 120 has passed if the load has pushed the carrier 130 to rotate to the first rotational direction. Therefore, the disturbance to the separation process and the time spent away from the normal operating condition at the rest angle may be minimized.

[0114] In an example embodiment, where the evasive movement of the magnetic separator 110 is at least partially enabled by flexible or pivotable suspenders 145, the carrier 130 needs not rest against the carrier support 140 at the rest angle (rest position). Instead, the rest position and rest angle of the magnetic separator 110 may be defined by the position and length of the suspenders 145.

[0115] In an example embodiment, the carrier 130 does not automatically return to the rest angle once the load has passed and the return needs to be activated by a user. That is, the carrier 130 remains in the rotated position in the first rotational direction even though the load carried by the conveyor 120, that pushed the magnetic separator 110 out of the rest angle, has passed. In such case, the carrier 130 needs to be released from the turned position by a user to allow it to return to the rest angle. This way, for instance, potential damages or upcoming load composition and size may be evaluated before continuing the separation process. The position of the carrier 130 and magnetic separator 110 may be adjusted accordingly if needed. Therefore, the chance for further undesired contacts with the load carried on the conveyor 120 may be minimized.

[0116] In an example embodiment, the carrier 130 is automatically returned to the rest angle unless it is rotated beyond a certain angle, locking angle, to the first rotational direction. The locking angle may be, for instance, 15, 20, 25, 30, or 40 degrees. However, the particular locking angle may be defined case-specifically, for instance, taking into account the characteristics of the load material, magnetic separator 110, and the conveyor 120. This way, occasional small contacts between the conveyor load and the magnetic separator 110 that do not significantly push the carrier 130 away from the rest angle may not disturb the operation of the magnetic separator 110.

[0117] When the carrier 130 is at rest angle, the carrier 130 (and the magnetic separator 110 attached to it) is at the position at which the carrier 130 is rotated closest to the carrier support 140 about the pivot joint 160. In an example embodiment, the rest angle remains unchanged with respect to ground.

[0118] The holder 100 comprises an angle actuator 185 to adjust the rest angle of the carrier 130. In an example embodiment, the angle actuator 185 is an adjustment screw. In an example embodiment, the angle actuator 185 comprises a hydraulic cylinder. In an example embodiment, the angle actuator 185 comprises a pneumatic cylinder. In an example embodiment, the angle actuator 185 comprises an electric cylinder. In an example embodiment, the angle actuator 185 is manually operable by a user. In an example embodiment, the angle actuator 185 is remotely operable, for example, via a computer or a computer Interface. The angle actuator 185 enables accurate control of the rest angle. Thus, the control of the rest angle is not limited or dependent only on the shape of the rail 170 and a position of the carrier support 140 along the rail 170.

[0119] Fig. 1 further shows a height sensor 195 configured to measure current height of material conveyed by the conveyor 120. The height sensor 195 may comprise a laser sensor. The height sensor 195 may comprise an ultrasonic sensor. The height sensor 195 may comprise one or more light barriers. In an example embodiment, the gap actuator 180 is configured to regulate a gap between the magnetic separator 110 and material conveyed by the conveyor 120. A process automation system or simply some collision control circuitry can be provided to monitor measurements of the height sensor 195 and to accordingly control the gap actuator 180 to ascend or descend the magnetic separator 110 so as to attempt maintaining a desired gap between the magnetic separator 110 and the conveyed material. Advantageously, the magnetic separator 110 can then be usually positioned close to the conveyed material so improving the magnetic separation while still avoiding collisions that might damage the magnetic separator or allow some waste metal slip through.

[0120] Fig. 3 further shows an interconnector 310 that couples laterally opposite branches of the carrier 130 above the conveyor 120. Advantageously, the interconnector 310 increases lateral stabilisation capability of the carrier 130.

[0121] Fig. 4 shows a cross-section of a holder for a magnetic separator 110 of a conveyor 120 according to an example embodiment. The cross-section is cut along the line A-A shown in Fig. 3. Fig. 4 shows an example of rollers 145 that are configured to support the carrier 140 to the rail 170 and to enable movement of the carrier support 140 along the rail 170. In an example embodiment, wheels, bearings, or sliding surfaces can be used instead of rollers. This way the most suitable alternative for enabling movement may be selected, for example, based on the known or expected operating conditions of the conveyor 120 and the holder 100.

[0122] Fig. 5A shows a 3D view of a holder 100’ for the magnetic separator 110 of the conveyor according to another example embodiment. The holder 100’ of this example embodiment comprises a four-bar linkage providing a height adjustably carrier support. A bottom bar 510 of the four-bar linkage is coupled by first and second intermediate bars 520, 530 to a top bar that is not shown in Fig. 5A. Instead, longitudinal ends of the frame 190 of Fig. 1 can be directly used as the top bar on each lateral side. The bottom bar 510 implements some functions of the carrier 130 (Fig. 1 ), such as any one or more of following options: controlling the angle of the magnetic separator 110 (Fig. 1 ); supporting the magnetic separator 110 with a plurality of suspenders 145’; stabilising suspender hanging points 512, 514 in a longitudinal direction to the frame 190 (Fig. 1 ); and stabilising the suspender hanging points 512, 514 in a lateral direction to the frame 190.

[0123] In an example embodiment, the suspender hanging point 512 is formed by a coupler of the intermediate bars. In an example embodiment, the coupler of the intermediate bars comprises two plates configured to sandwich the bottom bar 510 and define a lug that provides the suspender hanging point. The coupler of the intermediate bars may be longitudinally adjustably attachable to the bottom bar 510, e.g., by tightening the two plates against the bottom bar. Alternatively, or additionally, the coupler of the intermediate bars may be welded or bolted to the bottom bar 510. A plurality of the couplers of the intermediate bars can be provided for readiness to hang different magnetic separators 110 from the bottom bar 510.

[0124] As seen in Fig. 5A, the bottom bar 510 is in the longitudinal direction of the conveyor 120 (Fig. 1 ). In result, slight changes in horizontal position are also in the longitudinal direction, when moving the magnetic separator 110 (Fig. 1 ) up or down.

[0125] In Fig. 5A, the four-bar linkage maintains the bottom 510 bar at a constant angle throughout the moving of the carrier between the first position and the second position. In an example embodiment, the mutual lengths of the different bars are defined such that a mutual angle between the bottom bar 510 and the conveyor remains constant, when both the conveyor 120 and the magnetic separator 110 are adjusted to different heights with a constant gap between the magnetic separator 110 and the conveyor 120. In an example embodiment, an interconnector 540 is provided. In an example embodiment, the carrier support comprises one or more branches for each lateral side of the conveyor 120 coupled above the conveyor 120 by the interconnector 540. In an example embodiment, the interconnector 540 connects such branches across the conveyor 120.

[0126] In an example embodiment, two or more of the suspenders 145 comprise one or more rigid members pivotably coupled with ends thereof. As shown in Fig. 1 , where the carrier itself allows pivoting of a larger system, the suspenders 145 can be rigid and rigidly attached at both ends. However, as shown in Fig. 5A, the flexible suspenders or pivotable 145’ can be used. Such suspenders can be formed of two or more pivotably linked members.

[0127] In an example embodiment as illustrated by Fig. 5A, one or more flexible diagonal stabilizers 550 are provided in parallel with the suspenders 145’.

[0128] Fig. 5A further illustrates the gap actuator 180. In an example embodiment, the gap actuator 180 is a manual device. For example, the gap actuator 180 can be formed using a thread or a hydraulic jack. Especially in such a case, the gap actuator 180 may be removable and taken into use as needed.

[0129] In an example embodiment, the gap actuator 180 comprises a hydraulic, pneumatic, or electric cylinder, or a winch. In an example embodiment, the reach of the gap actuator 180 defines the first position and the second position. In an example embodiment, the first and / or second position is / are defined by a stopper or stoppers 175 (Fig. 1 ).

[0130] In an example embodiment, one or more rest members 560 are provided to at least partially bear weight of the carrier 130 when in use so as to relieve the gap actuator of some gravitational force caused by the carrier 130 and the magnetic separator 110.

[0131] Fig. 5A further shows a plurality of coupling pins 570 for coupling the intermediate bars 520 by upper ends thereof 530 to the frame 190 (Fig. 1 ). The upper ends here refer to a time at which the magnetic separator 110 is at a lowered position. In an example embodiment, the magnetic separator 110 can be lifted that much that the opposite ends of the intermediate bars 520 reside above the level of ends denoted in Fig. 5A as the upper ends.

[0132] Figs. 5B to 5E show further views to for better illustration. Figs. 5B and 5C illustrate short suspenders formed of only two loops. Moreover, lateral stabilisation is clearly visible here, provided by diagonal chains. The lateral stabilisation may be advantageous for countering lateral reaction on imposing lateral removal forces on magnetic metals being rejected from the material flow that runs on the conveyor 120. Moreover, or alternatively, the lateral stabilisation may be advantageous for transport time support to reduce lateral forces experienced by the suspenders.

[0133] Fig. 5D further illustrates a portion of a frame 580 of a mobile platform or of a sub-frame attached to the frame of the mobile platform. That portion of the frame or subframe supports upmost joints of the four-bar linkage. Fig. 5D further illustrates a protective structure 590, such as a bumper. In an example embodiment, the protective structure 590 is coupled with the magnetic separator, e.g., by attachment directly to the magnetic separator. In an example embodiment, the protective structure 590 is attached to a frame of the magnetic separator. In an example embodiment, the protective structure is made of steel plate. In an example embodiment, the protective structure is configured to flex in a collision so as to restrict maximum accelerations experienced by the magnetic separator.

[0134] Fig. 6 shows a flow chart according to an example embodiment. A method for adjusting position of a magnetic separator 110 of a conveyor 120 is depicted. The method may be performed, e.g., by a holder 100 or any of its embodiments described in the foregoing. The method comprises:

[0135] 610: Supporting a magnetic separator 110 by a carrier 130 using a plurality of suspenders 145 to hang the magnetic separator 110 from the carrier 130.

[0136] 620: Supporting the carrier 130 by a carrier support 140.

[0137] 630: Moving the carrier support 140 by a gap actuator 180 such that the carrier 130 moves the magnetic separator 110 between a first position and a second position. In an example embodiment, the first position and the second position of the magnetic separator 110 respectively correspond to a first gap and a second gap between the magnetic separator 110 and the conveyor 120. In an example embodiment, the magnetic separator 110 moves along a movement path defined by the carrier support 140.

[0138] In an example embodiment, the method further comprises:

[0139] 640: Stabilising the carrier 130 at least in a lateral direction by the carrier support 140. In an example embodiment, the carrier 130 is laterally stabilised by the carrier support 140 in the first position and in the second position. In an example embodiment, the carrier 130 is laterally stabilised by the carrier support 140 while the carrier 130 moves along the movement path.

[0140] In an example embodiment, the method further comprises

[0141] 650: Allowing an evasive movement for the magnetic separator 110 when a load carried by the conveyor 120 pushes the magnetic separator 110 or a protective structure in connection with the magnetic separator 110. In an example embodiment, the carrier 130 and the carrier support 140 enable the evasive movement. In an example embodiment, the plurality of suspenders 145 enable the evasive movement.

[0142] In an example embodiment, e.g., as shown in Fig. 4, the magnetic separator 110 is allowed to rotate in a first rotational direction, away from a rest position in response to that a load carried by the conveyor 102 pushes the magnetic separator 110 or another structure attached to the carrier 130. In an example embodiment, the carrier 130 also rotates with the magnetic separator 110 about the pivot joint 160.

[0143] In an example embodiment, the method further comprises:

[0144] 660: Measuring current height of material that is being conveyed by the conveyor towards the magnetic separator.

[0145] In an example embodiment, the method further comprises:

[0146] 670: Controlling the gap actuator 180 to move the carrier 140 according to the current height so as to regulate a gap between the magnetic separator 110 and the material conveyed by the conveyor 120.

[0147] In an example embodiment, the protective structure is a bumper shield 190. The bumper shield 190 may be, for instance, a plate structure, or comprise guard rails. The protective structure may be in connection with the magnetic separator 110 via the carrier 130. In an example embodiment, only the magnetic separator 110 moves or rotates along the path allowed by the flexible or pivotable suspenders 145. Advantageously, if a load larger than the gap between the magnetic separator 110 and the conveyor 120 is carried on the conveyor 120, the load will push and rotate the magnetic separator 110 out of the way and at the same time increase the gap between the magnetic separator 110 above the conveyor 120. Therefore, damages to the magnetic separator 110 may be minimized and the gap increased to allow the load to pass beneath the magnetic separator 110.

[0148] In an example embodiment, the magnetic separator 110 automatically rotates back to the rest position once the load has passed due to gravity. The pivot joint 160 is positioned suitably to enable such automatic returning. In an example embodiment, the flexible or pivotable suspenders 145 enable automatic returning to rest position due to gravity. In an example embodiment, the support 130 needs to be released by a user to return to the rest position.

[0149] Fig. 7 shows a mobile mineral material processing plant according to an example embodiment. The mobile mineral material processing plant 700 may comprises a platform frame 710. The mobile mineral material processing plant further comprises a crusher 720 supported by the platform frame 710 and a feeder 730 to feed material to crusher 720. The crusher 720 may be, for example, a jaw crusher, horizontal shaft impactor or another type of mineral material crusher The mobile mineral material processing plant 700 may further or alternatively comprise a screen 740 supported by the platform frame 710. The mobile mineral material processing plant 700 may further or alternatively comprise a conveyor 750 supported by the platform frame. The mobile mineral material processing plant 700 further comprises a magnetic separator 110 located above said conveyor or conveyors.

[0150] In an example embodiment, the mobile mineral material processing plant 700 further or alternatively comprises a ground support 760 configured to support the mobile mineral material processing plant 700 onto the ground. The ground support 760 may be configured to enable movement of the mobile mineral material processing plant 700 while maintaining ground contact. The ground support 760 may comprise a sledge. Alternatively, or additionally, the ground support 760 may comprise one or more wheels. Alternatively, or additionally, the ground support 760 may comprise one or more crawler tracks. Alternatively, or additionally, the ground support 760 may comprise one or more sledges. In an example embodiment, the mobile mineral material processing plant is self-propelling.

[0151] Without limiting the scope and interpretation of the patent claims, certain technical effects of one or more of the example embodiments disclosed herein are listed in the following. A technical effect is improved positioning of the magnetic separator 110 with respect to the conveyor 120. Further technical effect is minimizing and preventing damages in case the magnetic separator 110 is positioned too low and is hit by a load carried by a conveyor 120. Further technical effect is improved operational efficacy due to straightforward positional adjustment of the support 130 and the magnetic separator 110.

[0152] Various embodiments have been presented. It should be appreciated that in this document, words comprise, include, and contain are each used as open-ended expressions with no intended exclusivity.

[0153] The foregoing description has provided by way of non-limiting examples of particular implementations and embodiments a full and informative description of the best mode presently contemplated by the inventors for carrying out the invention. It is however clear to a person skilled in the art that the invention is not restricted to details of the embodiments presented in the foregoing, but that it can be implemented in other embodiments using equivalent means or in different combinations of embodiments without deviating from the characteristics of the invention.

[0154] Furthermore, some of the features of the afore-disclosed example embodiments may be used to advantage without the corresponding use of other features. As such, the foregoing description shall be considered as merely illustrative of the principles of the present invention, and not in limitation thereof. Hence, the scope of the invention is only restricted by the appended patent claims.

Claims

CLAIMS1. A holder (100) for a magnetic separator (110) of a conveyor (120), comprising: a carrier (130, 510); a plurality of suspenders (145, 145’) configured to hang the magnetic separator (110) from the carrier (130, 510) below the carrier (130, 510); and a carrier support (140, 520, 530) configured to support the carrier (130, 510); characterized in that the holder further comprises a gap actuator (180) configured to move the carrier support (140, 520, 530) by lifting the carrier support (140, 520, 530) such that the carrier (130, 510) moves the magnetic separator (110) to a first position from a second position; and the holder (100) is configured to allow the magnetic separator (110) to move evasively when a load carried by the conveyor (120) pushes the magnetic separator (110) or a protective structure (590) in connection with the magnetic separator (110).

2. The holder (100) according to claim 1 , wherein the magnetic separator is configured to move along a movement path defined by the carrier support (140, 520, 530).

3. The holder (100) according to claim 1 or 2, wherein the plurality of suspenders (145’) are flexible or pivotable.

4. The holder (100) according claim 3, further comprising one or more flexible or pivotable diagonal stabilizers (550) in parallel with the plurality of suspenders.

5. The holder (100) according to any one of preceding claims, wherein the carrier support (140, 520, 530) is further configured laterally stabilise the carrier (130, 510).

6. The holder (100) according to any one of preceding claims, wherein the carrier support (140, 520, 530) is configured to maintain the carrier (130, 510) at a constant angle throughout the moving of the magnetic separator (110) between the first position and the second position.

7. The holder (100) according to any one of preceding claims, wherein the carrier support (520, 530) comprises a four-bar linkage.

8. The holder (100) according to any one of claims 1 to 6, wherein the holder (100) comprises a rail (170) configured to support the carrier (130) such that the carrier (130) is movable along the rail (170) and that the magnetic separator (110) remains in an angle at least partially defined by the rail (170).

9. The holder (100) according to any one of preceding claims, wherein the carrier (130, 510) comprises an interconnector (310, 540); and the carrier (130, 510) comprises one or more branches for each lateral side of the conveyor (120) coupled above the conveyor (120) by the interconnector (310, 540).

10. The holder (100) according to any one of preceding claims, wherein two or more of the plurality of suspenders (145) comprise one or more rigid members pivotably coupled at ends thereof.11 . The holder (100) according to any one of preceding claims, further comprising a rest member (560) configured relieve the gap actuator of some gravitational force caused by the carrier (130, 510) and the magnetic separator (110).

12. A method for adjusting position of a magnetic separator (110) of a conveyor (120), the method comprising: supporting (610) a magnetic separator (110) by a carrier support (10) using a plurality of suspenders (145) to hang the magnetic separator (110) from the carrier (130, 510); supporting (620) the carrier (130, 510) by a carrier support (140); and moving (630) the carrier support (140) by a gap actuator (180) such that the carrier (130, 510) moves the magnetic separator (110) between a first position and a second position.

13. A system for mineral material processing comprising a conveyor (120), magnetic separator (110), and a holder (100) according to any one of the claims 1-11.

14. The system of claim 13, further comprising a height measurement circuitry configured to measure current height of material that is being conveyed by the conveyor towards the magnetic separator; and a collision control circuitry configured to control the gap actuator (180) to move the carrier (130, 510) according to the current height so as to regulate a gap between the magnetic separator (110) and the material conveyed by the conveyor (120).

15. A mobile mineral material processing plant (600) comprising the holder according to any one of the claims 1-11 or the system according to claim 14.

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