Magnetic separator with adjustable magnetic field

Abstract

The invention relates to the technical field of mining equipment, in particular to a magnetic separator with an adjustable magnetic field. The magnetic separator with the adjustable magnetic field comprises a roller device which can adjust the shape of the magnetic field and the magnetic field intensity; the roller device comprises a magnetic system module; the magnetic field radial adjusting assembly drives the magnetic system module to ascend and descend in the radial direction of the roller so as to adjust the magnetic field shape and the magnetic field intensity; the magnetic field display device is used for displaying magnetic field parameters in real time based on the position of the current magnetic system; the magnetic separator with the adjustable magnetic field further comprises a clockwise and counterclockwise double-acting groove body, and clockwise and counterclockwise bidirectional operation can be achieved by adjusting the magnetic field characteristics. The adjustable magnetic field magnetic separator further comprises a separation space real-time display.

Description

Technical Field

[0001] The invention relates to the technical field of mining equipment, in particular to a magnetic separator with adjustable magnetic field. Background Art

[0002] Permanent magnetic drum separator is suitable for metallurgical mining and mining beneficiation, beneficiation plants and other enterprises, institutions and individual users. It is used to select fine-grained magnetic minerals or remove magnetic minerals mixed with non-magnetic minerals. Permanent magnetic drum separator is a wet magnetic separator with high field strength. It uses a composite magnetic system composed of rare earth neodymium iron boron magnets and ferrite magnets with high magnetic properties, and has a high magnetic field strength. Permanent magnetic drum separator has the characteristics of large magnetic field action depth and is not easy to demagnetize. Therefore, the equipment has a large processing capacity, strong adaptability to production fluctuations, and good separation effect.

[0003] The working principle of the permanent magnetic drum magnetic separator is that after the ore pulp flows into the trough through the feed box, the ore particles enter the feeding area of ​​the trough in a loose state under the action of the water flow of the feed water pipe. Under the action of the magnetic field, the magnetic ore particles are magnetically aggregated to form "magnetic clusters" or "magnetic chains". The "magnetic clusters" or "magnetic chains" are affected by the magnetic force in the ore pulp and move toward the magnetic poles, and are adsorbed on the outer wall of the cylinder, rotating to the weak magnetic field at the edge of the magnetic system, and finally discharged under the action of water in the ore unloading water pipe.

[0004] When the material properties change or different materials are fed, the applicability of the magnetic separator will be greatly affected and the best separation effect cannot be achieved. In addition, each mineral in the mineral processing experiment has different particle sizes, associated components, and magnetic susceptibility coefficients, so the magnetic field adjustment function is required in the separation experiment.

[0005] Some magnetic separators with adjustable magnetic fields are used in the prior art, for example:

[0006] Patent CN202061704U discloses a magnetic field adjustable water washing magnetic separator, which is composed of a machine base, a magnet, a supporting wheel, a feed pipe, a rotating drum, a transmission gear, a water spray pipe, a discharge trough, an adjusting bolt and a receiving trough, and the magnetic field is adjusted by hand-tightening the adjusting bolt. Patent CN201505573U discloses a magnetic field adjustable drum-type strong magnetic separator that uses bolts and nuts for adjustment.

[0007] Patent CN210121527U discloses a permanent magnetic field adjustable magnetic separator, which adopts a magnetic adjustment unit composed of a magnetic system, a lifting device, a lifting device shaft, a steering handle and a steering device hollow shaft, and can complete the entire magnetic field adjustment at one time.

[0008] Patent CN201978813U discloses a magnetic separation drum with adjustable magnetic field, which adopts a magnetic support frame and adjusting bolts and uses spring reset.

[0009] Patent CN116328941B discloses a magnetic field real-time adjustment system and adjustment method based on production process monitoring. The production process can be monitored and adjusted in time according to the sampling detection coefficient data. The magnetic field component has a main shaft and n permanent magnets, the adjustment component has n adjustment modules, the adjustment module has a variable component and a connecting piece, and the n permanent magnets are respectively connected to the n adjustment modules one by one through n connecting pieces.

[0010] Patent US2013 / 0240413 discloses an adjustable magnetic field magnetic separator, which adjusts the position of the magnet by adopting a connecting rod type mechanical device.

[0011] Patent US8196751B2 of eriez company discloses an adjustable magnetic field permanent magnet separator, which adopts a more complex segmented connecting rod device to adjust multiple magnetic pole positions. Magnets at different distances will generate different magnetic field strengths outside the cylinder.

[0012] The problem is that, although the magnetic separator in the related art can realize magnetic field adjustment, users usually adjust the magnetic field repeatedly based on experience, which is inconvenient to adjust the magnetic field for different ore samples to achieve corresponding separation. Summary of the invention

[0013] The purpose of the present invention is to provide an adjustable magnetic field magnetic separator to solve to a certain extent the technical problem that users usually adjust the magnetic field repeatedly based on experience, which is inconvenient to adjust the magnetic field for different ore samples to achieve corresponding separation.

[0014] The present invention provides an adjustable magnetic field magnetic separator, comprising: a drum device capable of adjusting the magnetic field strength; the drum device comprises a drum, a magnetic system module and a magnetic field radial adjustment component; the magnetic system module is arranged in the drum; the magnetic field radial adjustment component is connected to the magnetic system module to drive the magnetic system module to rise and fall along the radial direction of the drum, thereby adjusting the magnetic field strength; the adjustable magnetic field magnetic separator also comprises: a magnetic field display device, comprising a follower and a display module located outside the drum; the follower is connected to the magnetic field radial adjustment component to follow the movement of the magnetic field radial adjustment component to achieve a matching relationship between the position of the follower and the position of the magnetic system module; the display module comprises magnetic field data matching different positions of the follower, and the magnetic field data comprises magnetic field strength; the display module can indicate current magnetic field data corresponding to the current position of the follower.

[0015] Furthermore, the magnetic field radial adjustment component includes: an adjustment shaft, a part of which is located inside the drum and the other part is located outside the drum; a radial adjustment member connected to the magnetic system module; a conversion structure capable of converting the rotation of the adjustment shaft into a linear motion of the radial adjustment member along the radial direction of the drum; and the follower is arranged on the part of the adjustment shaft located outside the drum to follow the movement of the adjustment shaft.

[0016] Furthermore, the magnetic field radial adjustment assembly also includes a connecting piece, which is arranged in the drum and can be fixed relative to the adjustment shaft, and a sliding hole is provided on the connecting piece; the radial adjustment piece is a magnetic pole slider, which is slidably arranged along the sliding hole; the conversion structure includes a track disk, a spiral groove arranged on the track disk and a sliding tooth arranged on the magnetic pole slider; the track disk is fixedly connected to the adjustment shaft; the sliding tooth can move along the spiral groove.

[0017] Furthermore, the drum device is capable of adjusting the shape of the magnetic field; the magnetic system module includes a plurality of magnetic pole units arranged in sequence along the circumference of the drum, and each of the magnetic pole units includes a plurality of magnetic pole modules arranged in sequence along the axial direction of the drum; the number of the radial adjustment members is multiple, and the plurality of magnetic pole units are detachably connected to the plurality of radial adjustment members in a one-to-one correspondence; different magnetic pole units are connected through the radial adjustment members to adjust the shape of the magnetic field.

[0018] Further, the follower includes a rotating block, which is fixed on the part of the adjusting shaft located outside the drum; or, the follower includes a slider, which is arranged on the part of the adjusting shaft located outside the drum through a threaded connection; the magnetic field display device also includes a mounting seat, which is fixed and has a sliding limit structure on it, and the slider can slide along the axial direction of the adjusting shaft under the restriction of the sliding limit structure.

[0019] Furthermore, the display module includes a pointer and a magnetic field data nameplate; the magnetic field data is marked on the magnetic field data nameplate; the pointer is fixedly connected to the follower, and the pointer can follow the movement of the follower to point to the current magnetic field data on the magnetic field data nameplate corresponding to the current position of the follower.

[0020] Furthermore, the display module includes: a position measuring element for measuring the current position of the follower; a data processor, the position measuring element is communicatively connected to the data processor, and the magnetic field data is stored in the data processor; a display, the data processor can process the position information data of the follower to obtain the current magnetic field data and transmit it to the display; the display includes a display screen, and the display screen can display the current magnetic field data.

[0021] Furthermore, the magnetic field data also includes the magnetic field shape, the magnetic parameters of each of the multiple magnetic pole units and the magnetic parameter curve; the display screen includes multiple display areas, so as to at least be able to display the magnetic field strength, the magnetic field shape, the magnetic parameters of each of the multiple magnetic pole units, and the magnetic parameter curve of each of the multiple magnetic pole units.

[0022] Furthermore, the adjustable magnetic field magnetic separator also includes: a sorting space adjustment device and an immersion depth displacement sensor, the sorting space adjustment device is connected to the drum device; the immersion depth displacement sensor can detect the displacement of the bottom of the drum and transmit it to the data processor, and the data processor obtains the position information of the bottom of the drum according to the displacement and transmits it to the display.

[0023] Furthermore, the drum device also includes: a magnetic declination adjustment component, including a connecting shaft connected to the magnetic system module, a part of the connecting shaft is located outside the drum, and a part is located inside the drum; the connecting shaft is provided with a connecting hole extending along its axial direction, and at least a part of the adjustment shaft is passed through the connecting shaft; a trough body; a position display plate, connected to the part of the connecting shaft located outside the drum; the position display plate is used to display the bottom contour of the drum, the position of the magnetic system module, and the size position of the sorting space formed by the current position of the drum and the bottom of the trough body; the position display plate rotates with the connecting shaft, thereby displaying the magnetic declination information and the magnetic wrap angle information.

[0024] Furthermore, the adjustable magnetic field magnetic separator includes: a trough body, which is a dual-action trough body for forward and reverse flow, and has a dual-action sorting function for forward and reverse flow; the magnetic pole slider is connected to different magnetic pole units, and a plurality of the magnetic pole units constitute the magnetic system module which is symmetrically arranged about the center line, and the trough body with the dual-action sorting function for forward and reverse flow can realize forward and reverse flow bidirectional operation by adjusting the magnetic deflection angle of the magnetic system module.

[0025] The adjustable magnetic field magnetic separator provided by the present invention has at least the following beneficial effects:

[0026] 1. The present invention realizes the visual adjustment function of magnetic field strength, which is convenient for users to use and convenient for adjusting the magnetic field for different ore samples to achieve corresponding sorting.

[0027] 2. The adjustable magnetic field separator provided by the present invention can connect different magnetic pole units through the magnetic pole slider and drive the magnetic system module to rise and fall along the radial direction of the drum to adjust the magnetic field shape and magnetic field strength. In addition, the magnetic field radial adjustment component of the adjustable magnetic field separator has a simple and compact structure, which can achieve simple operation and low cost, and can also make the adjustable magnetic field separator compact and occupy less space.

[0028] 3. The present invention realizes the visual adjustment function of the magnetic field shape and magnetic field strength of the magnetic separator.

[0029] 4. The magnetic separator of the present invention has a wide range of adjustable magnetic induction intensity. By replacing different magnetic pole modules and adjusting the magnetic field, it can achieve a coverage range of up to 300 to 8000 Gs. The spatial magnetic force distribution parameters of the four groups of magnetic poles can also be adjusted, and the entire adjustment process is bidirectionally visible, which can ensure the convenience of operation during the adjustment process. Under the same magnetic pole module, the magnetic field parameter adjustment can be completed by relying on only one rotating shaft structure.

[0030] 5. The magnetic separator of the present invention has the function of visually adjusting the spatial position relationship of magnetic separation throughout the whole process, and can cope with the separation experiments of different ore samples.

[0031] 6. The present invention can realize both downstream and countercurrent dual-action mineral separation, and the overall shape and internal mechanical device are simple. It is only necessary to adjust the magnetic declination to realize the switching of downstream and countercurrent dual-action mineral separation. Combined with the magnetic field shape, magnetic field intensity adjustment and separation space adjustment, the full coverage of magnetic separation samples is basically completed.

[0032] 7. The present invention adopts an intuitive monitoring and display method of magnetic field coefficient and sorting gap, and realizes the key numerical calibration of experimental magnetic separator parameters. Its selection data can provide certain guidance for the design of magnetic separator parameters for various ore samples.

[0033] It should be understood that both the foregoing general description and the following specific embodiments are for the purpose of example and illustration and do not necessarily limit the present disclosure. The accompanying drawings, which are incorporated into and constitute a part of the specification, illustrate the subject matter of the present disclosure. At the same time, the specification and the drawings are used to explain the principles of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 It is a structural schematic diagram of an adjustable magnetic field magnetic separator according to an embodiment of the present invention;

[0036] Figure 2 for Figure 1 The structural schematic diagram of the drum device in the adjustable magnetic field magnetic separator shown;

[0037] Figure 3 for Figure 1 The schematic diagram of the structure of the magnetic field radial adjustment component in the adjustable magnetic field magnetic separator shown;

[0038] Figure 4 for Figure 3 A schematic diagram of the local structure of the magnetic field radial adjustment component shown;

[0039] Figure 5 1 is a schematic diagram of the structure of a display module in the adjustable magnetic field magnetic separator;

[0040] Figure 6 1 is a schematic structural diagram of another display module in the adjustable magnetic field magnetic separator;

[0041] Figure 7 1 is a schematic structural diagram of the end view of the adjustable magnetic field magnetic separator;

[0042] Figure 8 It is a structural schematic diagram of the adjustable magnetic field magnetic separator shown in 1 when used clockwise;

[0043] Fig. 9 It is a structural schematic diagram of the adjustable magnetic field magnetic separator shown in 1 used counterclockwise;

[0044] Fig.10 The magnetic induction intensity B curve generated at the surface of the roller of the adjustable magnetic separation space of the magnetic system module of the embodiment of the present invention;

[0045] Fig.11 The magnetic system module of the embodiment of the present invention is in the selected area The changing curve of gradient value;

[0046] Fig.12 The magnetic system module of the embodiment of the present invention is in the selected area Variation curve of adsorption force parameter values.

[0047] Icons: 1- roller support frame; 2- roller device; 21- roller; 22- magnetic system module; 211- cylinder; 212- cylinder flange; 221- magnetic pole unit; 23- magnetic field radial adjustment assembly; 231- adjustment shaft; 232- track disk; 233- spiral groove; 234- magnetic pole slider; 235- hand wheel; 236- locking piece; 237- first shell; 238- second shell; 24- magnetic declination adjustment assembly; 241- connecting shaft; 242- driving rod; 243- fixed frame; 244- positioning piece; 5- frame; 6- Drum level adjustment device; 7-sorting space adjustment device; 8-tank body; 81-overflow height adjustment member; 82-magnetic ore outlet; 9-magnetic field display device; 91-mounting seat; 92-limiting structure; 93-slider; 94-position measuring element; 95-data processor; 96-display screen; 97-magnetic field data nameplate; 10-position display board; 20-reduction motor; 30-drive shaft; 40-drive bearing seat; 50-drum rotating bearing seat; 60-adjusting bearing seat; 70-ore unloading assembly; 80-immersion depth displacement sensor. DETAILED DESCRIPTION

[0048] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0049] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0050] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0051] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0052] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0054] like Figures 1 to 10 As shown, the present invention provides an adjustable magnetic field magnetic separator (which can refer to a wet selection permanent magnetic drum magnetic separator with adjustable magnetic field shape and strength), including a drum device 2, which can adjust the magnetic field strength; the drum device 2 includes a drum 21, a magnetic system module 22 and a magnetic field radial adjustment component 23; the magnetic system module 22 is arranged in the drum 21; the magnetic field radial adjustment component 23 is connected to the magnetic system module 22, so as to be able to drive the magnetic system module 22 to rise and fall along the radial direction of the drum 21, thereby adjusting the magnetic field strength; the adjustable magnetic field magnetic separator also includes: a magnetic field display device 9, including a follower and a display module located outside the drum 21; the follower is connected to the magnetic field radial adjustment component 23 to follow the movement of the magnetic field radial adjustment component 23, so as to achieve a matching relationship between the position of the follower and the position of the magnetic system module 22; the display module includes magnetic field data matching different positions of the follower, and the magnetic field data includes magnetic field strength; the display module can display current magnetic field data corresponding to the current position of the follower.

[0055] In this embodiment, the magnetic system module 22 is driven to rise and fall radially along the drum 21 by the magnetic field radial adjustment component 23, so as to adjust the distance from the magnetic system module 22 to the inner wall of the drum 21, and then adjust the magnetic field strength. In this process, the movement amount of the magnetic field radial adjustment component 23 determines the moving distance of the magnetic system module 22, and the movement amount of the magnetic field radial adjustment component 23 corresponds to the moving distance of the magnetic system module 22. The magnetic field radial adjustment component 23 moves to an adjustment position, and correspondingly, the magnetic system module 22 moves to a module position. The magnetic field radial adjustment component 23 moves to another adjustment position, and correspondingly, the magnetic system module 22 moves to another module position. That is, the position of the magnetic field radial adjustment component 23 matches the position of the magnetic system module 22. At the same time, the magnetic field radial adjustment component 23 drives the follower to move, and the movement amount of the magnetic field radial adjustment component 23 determines the movement amount of the follower, so the movement amount of the magnetic field radial adjustment component 23 has a corresponding relationship with the movement amount of the follower. The magnetic field radial adjustment component 23 moves to an adjustment position, and the follower moves to a follower position accordingly. The magnetic field radial adjustment component 23 moves to another adjustment position, and the follower moves to another follower position accordingly, that is, the position of the magnetic field radial adjustment component 23 has a matching relationship with the position of the follower. Therefore, the position of the follower has a matching relationship with the position of the magnetic system module 22, and the follower is in a follower position corresponding to the magnetic system module 22 being in a module position.

[0056] Different positions of the magnetic system module 22 relative to the drum 21 will form different magnetic field data such as the magnetic field strength of the magnetic separation. One module position corresponds to one magnetic field data, so that one follower position of the follower corresponds to one magnetic field data. Different follower positions of the follower correspond to different magnetic field data. The display module can display the corresponding current magnetic field data according to the current position of the follower. The magnetic field data includes the magnetic field strength, and the display module can at least display the current magnetic field strength. In the process of selecting the corresponding magnetic field strength according to the specific sorting materials, the user can adjust the magnetic system module 22 through the magnetic field radial adjustment component 23, and can intuitively understand whether the adjustment is in place from the current magnetic field strength indicated by the display module, until the display module displays the required magnetic field strength, the user can stop adjusting the position of the magnetic system module 22, so that the magnetic field strength adjustment process can be visualized.

[0057] The adjustable magnetic field magnetic separator provided in this embodiment has a visual magnetic field strength adjustment process, which allows users to intuitively understand the adjustment process of the magnetic field strength, and can quickly, conveniently and accurately adjust the magnetic field strength to the magnetic field strength required by the material, which is convenient for users to use. In addition, the adjustable magnetic field magnetic separator provided in this embodiment converts complex magnetic field parameters into simple position changes of the follower, and the corresponding magnetic field data can be obtained only through the position change of the follower (which can be understood as the displacement of the follower, which can be angular displacement or linear displacement), avoiding the use of magnetic sensors for real-time detection, avoiding the use of high-cost components, and reducing production and maintenance costs. In addition, the follower is located outside the drum 21, which is convenient for assembly. The user can also understand the movement of the magnetic field radial adjustment component 23 based on the movement of the follower, which is more conducive to the user's grasp of the magnetic field strength adjustment.

[0058] It should be noted that the corresponding relationship between the position of the magnetic system module 22 and the magnetic field data can be obtained by means of experiments, simulations, calculations, etc. Specifically, the corresponding relationship between the position of the magnetic system module 22 and the magnetic field coefficient can be obtained by means of experiments, simulations, calculations, etc. The magnetic field coefficient includes the magnetic field intensity B and the magnetic field gradient According to the comprehensive calculation of magnetic field intensity and magnetic field gradient, the adsorption factor can be obtained. The ore adsorption capacity can be obtained based on the adsorption factor.

[0059] The adsorption strength depends on the weight of the ore, that is, the particle size, the specific gravity of the ore, and the relative magnetic permeability. At the same time, the adsorption force needs to overcome gravity and centripetal force. Since the diameter of the drum 21 is fixed, the magnetic field needs to be adjusted to work in accordance with the properties of different ores. Therefore, according to the magnetic separation theory, the magnetic separator needs to give the magnetic induction intensity B and the adsorption force factor Only numerical values ​​can facilitate operators to adjust and control the corresponding parameters of the magnetic separator. At the same time, clear experimental magnetic field parameters can provide a theoretical basis for the selection of magnetic separators for subsequent production equipment.

[0060] The calibration can be carried out by combining the two modules of magnetic circuit design and data analysis. By assigning specific parameters and materials of the magnetic circuit unit under certain conditions, and using software to calculate the detailed magnetic field parameter data under the conditions, a series of data groups of key path changes and adsorption force changes of the adjustable magnetic field are obtained. The series of data groups has a matching relationship with the movement of the follower, so that detailed magnetic field data can be obtained through the position change of the follower.

[0061] Of course, other desired data related to the magnetic field can also be obtained, which will not be repeated here.

[0062] Specifically, Figure 1 As shown, the adjustable magnetic field magnetic separator also includes a drum support frame 1, and the drum 21 is rotatably arranged on the drum support frame 1.

[0063] Among them, the magnetic field radial adjustment component 23 can adopt conventional means, for example: the magnetic field radial adjustment component 23 includes a fixed shaft, an adjustment plate, an adjustment slider 93 and an electric telescopic rod. The fixed shaft passes through the roller 21 and is connected to the roller support frame 1 to avoid affecting the rotation of the roller 21. The adjustment plate is fixed on the fixed shaft, and the adjustment slider 93 is slid on the adjustment plate along the radial direction of the roller 21. The electric telescopic plate is fixed on the adjustment plate and fixedly connected to the adjustment slider 93 to drive the adjustment slider 93 to move, thereby driving the magnetic system module 22 to move.

[0064] As an optional solution, the magnetic field radial adjustment component 23 includes an adjustment shaft 231, a part of which is located inside the drum 21 and the other part is located outside the drum 21; a radial adjustment member connected to the magnetic system module 22; a conversion structure capable of converting the rotation of the adjustment shaft 231 into a radial linear motion of the radial adjustment member along the drum 21; and a follower member arranged on the part of the adjustment shaft 231 located outside the drum 21 to follow the movement of the adjustment shaft 231.

[0065] In this embodiment, the drive adjustment shaft 231 rotates, and the conversion structure converts the rotation of the adjustment shaft 231 into a linear motion of the radial adjustment member along the radial direction of the drum 21. The radial adjustment member drives the magnetic system module 22 to rise and fall along the radial direction of the drum 21. The magnetic field radial adjustment component 23 of this structure occupies less space.

[0066] Among them, the conversion structure can be in various forms, for example: the conversion structure includes a gear, a rack and a connecting rod; the gear is coaxially fixed on the adjustment shaft 231, the rack is meshed with the gear, one end of the connecting rod is hinged to the rack, and the other end is hinged to the radial adjustment member; at this time, the radial adjustment member can be a slider 93, a sliding rod, etc.

[0067] As an alternative, Figures 2 to 4 As shown, the magnetic field radial adjustment component 23 also includes a connecting piece, which is arranged in the drum 21 and can adjust the shaft 231 to be fixed, and a sliding hole is provided on the connecting piece; the radial adjustment piece is a magnetic pole slider 234, which is slidably arranged along the sliding hole; the conversion structure includes a track disk 232, a spiral groove 233 arranged on the track disk 232 and a sliding tooth arranged on the magnetic pole slider 234; the track disk 232 is fixedly connected to the adjustment shaft 231; the sliding tooth can move along the spiral groove 233.

[0068] In this embodiment, the drive adjustment shaft 231 is rotated. During the rotation of the adjustment shaft 231, the connecting piece remains stationary, the pole slider 234 and the track disk 232 are constrained in the circumferential direction, and the adjustment shaft 231 drives the track disk 232 to rotate, and the spiral groove 233 rotates accordingly, and the pole slider 234 moves relative to the spiral groove 233, so that the pole slider 234 can move in the radial direction of the drum 21 toward or away from the drum 21, thereby driving the magnetic system module 22 to move toward or away from the drum 21. In this way, the distance between the side of the magnetic system module 22 away from the adjustment shaft 231 and the inner wall of the drum 21 corresponding to the magnetic system module 22 is achieved, and the outer wall of the drum 21 corresponding to the magnetic system module 22 forms a sorting zone, that is, the distance adjustment between the magnetic system module 22 and the sorting zone is achieved, thereby achieving the adjustment of the magnetic field strength in the sorting zone, and the entire adjustment process is simple to operate. The magnetic field radial adjustment component 23 of the adjustable magnetic field magnetic separator has a simple and compact structure, and a simple mechanical structure can be used to adjust the magnetic field shape and magnetic field strength, which makes the operation simple and the equipment cost low. It can also make the adjustable magnetic field magnetic separator compact and occupy less space.

[0069] like Figures 2 to 4 As shown, based on the above embodiment, the drum device 2 is further capable of adjusting the shape of the magnetic field; the magnetic system module 22 includes a plurality of magnetic pole units 221 arranged in sequence along the circumference of the drum 21, and each magnetic pole unit 221 includes a plurality of magnetic pole modules arranged in sequence along the axial direction of the drum 21; there are a plurality of radial adjustment members, and the plurality of magnetic pole units 221 are detachably connected to the plurality of radial adjustment members in a one-to-one correspondence; different magnetic pole units 221 are connected by radial adjustment members to adjust the shape of the magnetic field.

[0070] In this embodiment, each magnetic pole unit 221 can be configured with a magnetic pole module with different magnetic field parameters according to functional requirements, and multiple magnetic pole units 221 constitute a complete magnetic system module 22. The magnetic system module 22 composed of magnetic pole modules with different magnetic field parameters has different initial magnetic field strengths, magnetic wrap angles, numbers of magnetic poles, etc. Multiple magnetic pole units 221 are detachably connected to multiple magnetic pole sliders 234 in a one-to-one correspondence, so that the appropriate magnetic system module 22 can be replaced according to specific magnetic field adjustment requirements. Therefore, the adjustable magnetic field magnetic separator provided in this embodiment can connect different magnetic pole units 221 through magnetic pole sliders 234 and drive the magnetic system module 22 to rise and fall along the radial direction of the drum 21 to adjust the magnetic field shape and magnetic field strength.

[0071] For the same set of magnetic system modules 22, a set of magnetic field strength adjustment ranges can be achieved by adjusting the distance from the magnetic system module 22 to the drum 21 and the sorting zone. Different magnetic system modules 22 can be replaced to obtain different magnetic field strength adjustment ranges. The distance from the magnetic system module 22 to the sorting zone is adjusted within a set adjustment stroke and the magnetic system module 22 can be replaced. The adjustable magnetic field magnetic separator provided by the embodiment of the present invention can achieve an adjustable magnetic field strength range of 300 to 8000 Gs, and can sort more types of materials.

[0072] As an optional solution, the follower includes a rotating block, and the rotating block is fixed to a portion of the adjusting shaft 231 located outside the drum 21 .

[0073] In this embodiment, the follower rotates following the adjusting shaft 231 , that is, the angular displacement of the follower corresponds to the linear displacement of the radial adjusting member (specifically, the magnetic pole slider 234 ).

[0074] As an optional solution, the follower includes a slider 93, which is arranged on the part of the adjusting shaft 231 located outside the drum 21 through a threaded connection. Specifically, the part of the adjusting shaft 231 located outside the drum 21 is provided with an external thread, and the slider 93 is provided with a through hole, and the through hole is provided with an internal thread matching the external thread; the magnetic field display device 9 also includes a mounting seat 91, the mounting seat 91 is fixedly arranged (the mounting seat 91 can be connected to the drum support frame 1), and the mounting seat 91 is provided with a sliding limit structure 92, and the slider 93 can slide along the axial direction of the adjusting shaft 231 under the restriction of the sliding limit structure 92.

[0075] In this embodiment, the movement of the slider 93 is achieved through a lead screw mechanism, and the rotation angle of the track disk 232 can be converted through the linear displacement of the slider 93, thereby obtaining the lifting distance of the magnetic system module 22.

[0076] As an alternative, Figure 6 As shown, the display module includes a pointer and a magnetic field data nameplate 97; the magnetic field data is marked on the magnetic field data nameplate 97 (forming a scale); the pointer is fixedly connected to the follower, and the pointer can follow the movement of the follower to point to the current magnetic field data on the magnetic field data nameplate 97 corresponding to the current position of the follower.

[0077] In this embodiment, the magnetic field data nameplate 97 can be fixed on the mounting base 91, and the adjusting shaft 231 rotates to adjust the lifting and lowering of the magnetic system module 22. At the same time, the follower drives the pointer to move. The pointer points to the corresponding position of the magnetic field data nameplate 97, which is the magnetic field data at the current position of the magnetic system module 22.

[0078] like Figure 5As shown, based on the above embodiment, further, a viewing window is provided on the mounting seat 91, and a magnetic field data nameplate 97 is provided at the viewing window, so that the user can observe the movement of the follower through the viewing window.

[0079] like Figure 5 As shown, based on the above embodiment, the adjustable magnetic field separator may further include a locking member 236 to lock the position of the adjustment shaft 231. The locking member 236 may have various structural forms, for example, through the cooperation of a fastener and a hole, or through a snap-fit ​​structure, etc. The locking member 236 may be connected to the roller support frame 1. If the magnetic field display device 9 includes a mounting seat 91, a locking member 236 may be provided between the mounting seat 91 and the adjustment shaft 231, and the locking member 236 may fix the position of the adjustment shaft 231, such as Figure 5 As shown, the locking member 236 includes a limiting plate connected to the mounting seat 91, a clamp connected to the adjusting shaft 231, a connecting plate connected between the limiting plate and the clamp by a fastener, and the like.

[0080] If the follower is a rotating block that rotates synchronously with the adjustment shaft 231, the pointer rotates with the follower, and the magnetic field data nameplate 97 can be set to be a disc or a fan shape coaxially arranged with the adjustment shaft 231. If the follower includes a slider 93 that moves linearly following the movement of the adjustment shaft 231, the magnetic field data nameplate 97 can be a strip plate extending along the axial direction of the adjustment shaft 231.

[0081] As an alternative, Figure 5 As shown, the display module includes: a position measuring element 94, which is used to measure the current position of the follower; a data processor 95, the position measuring element is communicated with the data processor 95, and the magnetic field data is stored in the data processor 95; a display, the data processor 95 can process the position information data of the follower to obtain the current magnetic field data and transmit it to the display; the display includes a display screen 96, and the display screen 96 can display the current magnetic field data.

[0082] In this embodiment, the data processor 95 can calculate and analyze the information transmitted by the position measuring element 94, so as to output the final magnetic field related information to the display screen 96. The user can directly obtain the magnetic field information from the display screen 96, which is convenient for use.

[0083] The position measuring element 94 may be a displacement sensor, and the displacement sensor measures the displacement of the follower to obtain the position of the follower. If the follower rotates with the adjustment shaft 231, the displacement sensor may be an angular displacement sensor, and if the follower moves linearly with the rotation of the adjustment shaft 231, the displacement sensor may be a linear displacement sensor.

[0084] It should be noted that the magnetic field display device 9 can display the magnetic field information only through the position measurement element 94, the data processor 95 and the display; it can also display the magnetic field information only through the pointer and the magnetic field data nameplate 97; it can also display the magnetic field information through the position measurement element, the data processor 95 and the display, and display the magnetic field information through the pointer and the magnetic field data nameplate 97.

[0085] Based on the above embodiment, further, the magnetic field data also includes the magnetic field shape, the magnetic parameters of each of the multiple magnetic pole units 221, and the magnetic parameter curve; the display screen 96 includes multiple display areas, so as to at least be able to display the magnetic field strength, magnetic field shape, the magnetic parameters of each of the multiple magnetic pole units 221, and the magnetic parameter curve of each of the multiple magnetic pole units 221.

[0086] According to the moving distance of the slider 93, a lot of magnetic field data results can be obtained. For example, there are four magnetic pole units 221, namely, a feeding magnetic pole, a sorting magnetic pole, a selecting magnetic pole and a discharging magnetic pole, which form a feeding area, a sorting area, a selecting area and a discharging area accordingly. Fig.10 This is a curve of the change of the magnetic induction intensity B generated at the surface of the adjustable magnetic system separation space cylinder of the magnetic system module 22 of this example of the present invention, in units of (Gs). The adjustable values ​​of multiple magnetic pole units 221 in the range of 0 to 20 mm are comprehensively calibrated into a numerical curve as a magnetic field parameter curve. Fig.11 The curve showing the change of the gradient value of the magnetic system module 22 in the selected area in this example is a curve in which the adjustable values ​​of the plurality of magnetic pole units 221 are comprehensively calibrated into a value curve as a magnetic field parameter curve. Fig.12 The curve of the change of the adsorption force parameter value of the magnetic system module 22 in the selected area of ​​the present invention is in units of (Gs2 / mm). This value is the magnetic adsorption force parameter in the separation operation of the magnetic separator. Different ore samples require different magnetic adsorption forces. The intuitive observation method of magnetic field parameters of the present invention has a simple structure, without complex magnetic sensors and other devices, and has the characteristics of low cost, stability, and high efficiency, and has a wide range of market application value. By setting multiple display areas, different parameter data can be displayed, which can enable users to understand the magnetic field characteristics more clearly.

[0087] like Figure 1As shown, on the basis of the above embodiment, the drum device 2 further includes a magnetic deflection angle adjustment component 24; the magnetic deflection angle adjustment component 24 may include a connecting shaft 241, a driving rod 242, a fixing frame 243 and a positioning member 244, a part of the connecting shaft 241 is located outside the drum 21, and a part is located inside the drum 21, one end of the driving rod 242 is fixedly connected to the part of the connecting shaft 241 located outside the drum 21 (the connection may be achieved by welding, fastener connection or interference connection, etc.); the driving rod 242 is located outside the drum 21; the fixing frame 243 is fixed on the drum support frame 1; the positioning member 244 is connected to the driving rod 242 and the fixing frame 243 to fix the position of the driving rod 242. The connecting member is fixed on the connecting shaft 241. The connecting shaft 241 is provided with a connecting hole extending along its axial direction (the connecting shaft 241 may be hollow), and at least part of the adjustment shaft 231 is penetrated in the connecting shaft 241.

[0088] In the adjustable magnetic field magnetic separator provided in this embodiment, the connecting shaft 241 can be driven to rotate with its own axis as the rotation center line, and the connecting shaft 241 drives the connecting part to rotate with the axis of the connecting shaft 241 as the rotation center line, so that the connecting part drives the radial magnetic pole slider 234 to swing with the axis of the connecting shaft 241 as the rotation center line, and then drives the magnetic system module 22 to swing with the axis of the connecting shaft 241 as the rotation center line, thereby realizing the adjustment of the magnetic declination angle of the magnetic system module 22.

[0089] Therefore, the adjustable magnetic field magnetic separator provided in this embodiment can realize the adjustment of magnetic declination. In addition, the magnetic declination adjustment component 24 and the magnetic field radial adjustment component 23 in the adjustable magnetic field magnetic separator provided in this embodiment are not independently arranged, at least part of the adjustment shaft 231 is inserted into the connecting shaft 241, and the connecting piece is connected to the connecting shaft 241. Such an arrangement not only avoids the interference between the magnetic declination adjustment process and the module radial adjustment process, but also enables the magnetic declination adjustment component 24 and the magnetic field radial adjustment component 23 to have a compact structure, occupy less space, and have fewer parts, so that the adjustable magnetic field magnetic separator can have a compact structure, occupy less space, and have low cost.

[0090] It is understandable that in order to facilitate the adjustment process, the connecting shaft 241, the adjustment shaft 231 and the roller 21 are coaxially arranged.

[0091] Information such as the magnetic wrap angle and the number of magnetic poles of different magnetic separation components can be stored in the data processor 95. A magnetic declination angle sensor for detecting the rotation angle of the connecting shaft 241 can be set on the support foot of the drum 21. The rotation angle of the connecting shaft 241 has a matching relationship with the swing angle of the magnetic system module 22. The swing angle of the magnetic system module 22 determines the magnetic declination of the magnetic system module 22. The rotation angle of the connecting shaft 241 has a matching relationship with the magnetic declination. The magnetic declination of the magnetic system module 22 can be obtained according to the rotation angle of the connecting shaft 241. The magnetic field shape and magnetic field strength of the magnetic separator can be visually adjusted, and the complex magnetic field coefficient transformation is converted into a simple magnetic system module 22 and magnetic field parameter adjustment. It should be noted that the above content is only an example, and other means can also be used to achieve it, which will not be repeated here.

[0092] On the basis of the above embodiment, the connecting member can be a connecting block, a sliding hole is provided on the radial wall of the drum 21 (the wall intersects with the radial direction of the drum 21), and a connecting hole connected to the sliding hole is provided on the axial wall of the drum 21 of the connecting block; the magnetic pole slider 234 is provided in an inverted L shape, a part of the magnetic pole slider 234 is slid in the sliding hole, and the other part extends out of the sliding hole, and a sliding tooth is provided on the axial wall of the drum 21 of the magnetic pole slider 234, and the sliding tooth extends from the connecting hole and is connected to the spiral groove 233. In addition, the lifting distance of the magnetic system module 22 depends on the rotation spacing and rotation angle of the track groove. When adjusting the lifting distance of the magnetic system module 22, the track can also adjust the gap size between the magnetic pole units 221, thereby changing the magnetic force parameter distribution of the separation space, and increasing the types of minerals that can be separated by the magnetic separator.

[0093] As an alternative, Figure 2 and Figure 3 As shown, the connecting member includes a first shell 237 and a second shell 238 that are butt-jointed, and an installation cavity is formed between the first shell 237 and the second shell 238; the track disk 232 is arranged in the installation cavity, and a part of the magnetic system slider 93 is also arranged in the installation cavity, that is, the sliding tooth and the spiral groove 233 are connected in the installation cavity; a sliding hole is provided on the second shell 238; a sliding groove is provided on one of the side walls of the sliding hole and the side walls of the magnetic pole slider 234, and a guide rail is provided on the other (specifically, a sliding groove may be provided on the side wall of the sliding hole, and a guide rail may be provided on the magnetic pole slider 234; or, a guide rail may be provided on the side wall of the sliding hole, and a sliding groove may be provided on the magnetic pole slider 234). In this way, the sliding of the magnetic pole slider 234 can be guided, so that the movement of the magnetic pole slider 234 is smoother.

[0094] like Figure 2As shown, the connecting shaft 241 may include a first section shaft and a second section shaft spaced apart in the axial direction, the first housing 237 is fixedly connected to the first section shaft, and the second housing 238 is fixedly connected to the second section shaft. The interval exposes part of the adjusting shaft 231, and the track disk 232 is connected to the adjusting shaft 231 at the interval.

[0095] In this embodiment, the driving rod 242 can be manually controlled to rotate, thereby driving the connecting shaft 241 to rotate. When the magnetic declination of the magnetic system module 22 is adjusted to the desired position, the current position of the connecting shaft 241 is fixed by the positioning member 244, thereby fixing the current magnetic declination.

[0096] The positioning member 244 may include a telescopic rod and a plurality of adjustment holes spaced apart along the length direction of the driving rod 242, the telescopic rod includes a fixed portion disposed on the fixing frame 243 and a telescopic portion connected to the fixing frame 243 by a threaded connection, and an end of the telescopic portion away from the fixed portion may be connected to the adjustment hole by a fastener. Of course, other technical means may also be used to achieve this.

[0097] Optionally, the fixing bracket 243 may include an indicator board on which a mark indicating the rotation angle of the driving rod 242 is provided, or the rotation angle is directly converted into the adjustment angle of the magnetic declination of the magnetic system module 22, so as to facilitate the user to grasp the adjustment amount.

[0098] The connecting shaft 241 may also be driven by a motor, a cylinder, or an oil cylinder, etc., which may realize driving and fixing the current position of the connecting shaft 241 .

[0099] like Figure 1 and Figure 2 As shown, on the basis of the above embodiment, further, the drum 21 can also include a drum flange 212 and a drum 211 with openings at both ends, and a drum flange 212 is provided at both ends of the drum 211. The adjustable magnetic field magnetic separator also includes a reduction motor 20, a transmission shaft 30, a transmission bearing seat 40 and an adjustment bearing seat 60. The transmission bearing seat 40, the adjustment bearing seat 60 and the reduction motor 20 are all fixedly arranged relative to the drum support frame 1, the transmission shaft 30 is transmission-connected with the reduction motor 20, and the transmission shaft 30 passes through the transmission bearing seat 40 and is transmission-connected with the drum flange 212 close thereto to drive the drum flange 212 to rotate, thereby driving the entire drum 21 to rotate. The two drum flanges 212 can be rotationally connected to the connecting shaft 241 through the drum rotating bearing seat 50 respectively. The connecting shaft 241 and the adjusting shaft 231 both pass through the adjusting bearing seat 60 , and the adjusting bearing seat 60 supports the connecting shaft 241 and the adjusting shaft 231 . The connecting shaft 241 and the adjusting shaft 231 both pass through the two cylindrical rotating bearing seats 50 to be supported.

[0100] On the basis of the above-mentioned embodiment, the adjusting shaft 231 can be driven by a motor, a cylinder or an oil cylinder, etc., which can realize driving and fixing the current position of the connecting shaft 241.

[0101] As an alternative, Figure 1 As shown, the magnetic field radial adjustment component 23 also includes: a hand wheel 235, which is fixedly connected to the adjustment shaft 231 and is located outside the drum 21; a locking member 236, which drives the hand wheel 235 to drive the adjustment shaft 231 to rotate and then fix the position of the adjustment shaft 231.

[0102] In this embodiment, the hand wheel 235 can be manually controlled to rotate, thereby driving the adjustment shaft 231 to rotate, which is low in cost.

[0103] like Figure 1 and Figure 7 As shown, based on any of the above embodiments, further, the adjustable magnetic field magnetic separator also includes: a frame 5, and a tank body 8 is arranged on the frame 5.

[0104] The adjustable magnetic field magnetic separator also includes a sorting space adjustment device 7 and an immersion depth displacement sensor 80. The sorting space adjustment device 7 (which can adjust the immersion depth of the drum 21, and the immersion depth of the drum 21 refers to the distance between the bottom of the drum 21 and the bottom of the groove) is connected to the drum device 2; the immersion depth displacement sensor 80 can detect the displacement of the bottom of the drum 21 and transmit it to the data processor 95. The data processor 95 obtains the position information of the bottom of the drum 21 according to the displacement and transmits it to the display.

[0105] In this embodiment, by detecting the position of the bottom of the drum 21, or understanding it as the displacement of the bottom of the drum 21 relative to the bottom of the trough body 8, the immersion depth of the drum 21, that is, the gap in the sorting space, can be determined, and the sorting gap adjustment process can be visualized.

[0106] like Figure 1 and Figure 7 As shown, based on any of the above embodiments, the adjustable magnetic field magnetic separator further includes a drum horizontal adjustment device 6, which is connected to the sorting space adjustment device 7; one of the drum horizontal adjustment device 6 and the sorting space adjustment device 7 is connected between the frame 5 and the drum support frame 1, and the other is connected to the drum device 2.

[0107] Optionally, a horizontal displacement sensor may be provided to measure the horizontal displacement of the roller device 2 .

[0108] like Figure 8 and Fig. 9As shown, in the width direction of the frame 5, both sides of the tank body 8 are provided with magnetic ore outlets 82, so that the counterclockwise operation and clockwise operation of the drum 21 can be realized, that is, the tank body 8 adopts a forward and reverse flow dual-action tank body. At this time, a magnetic pole slider 234 can be set to connect different magnetic pole units 221, and the magnetic system module 22 composed of multiple magnetic pole units 221 is symmetrically arranged about the center. By adjusting the magnetic declination of the magnetic system module 22, forward and reverse flow bidirectional operation can be realized. For example, Figure 8 and Fig. 9 In the orientation shown (for illustration only and not limitation), the ore inlet is set on the left side, and magnetic ore outlets 82 are set on both the left and right sides; when the downstream operation (drum 21 rotates clockwise), the center of the magnetic system module 22 can be adjusted to the left relative to the center of the drum 21 by the magnetic declination adjustment component 24; when the upstream operation (drum 21 rotates counterclockwise), the center of the magnetic system module 22 can be adjusted to the right relative to the center of the drum 21 by the magnetic declination adjustment component 24. The downstream and upstream dual-action ore dressing is realized, and the overall shape and internal mechanical device are simple. The switching of the downstream and upstream dual-action ore dressing can be realized by adjusting the magnetic declination. Combined with the magnetic field shape, magnetic field strength adjustment and separation space adjustment, the full coverage of the magnetic separation sample is basically completed.

[0109] It is understandable that a special magnetic system module 22 can also be configured for both co-current and counter-current operations.

[0110] like Figure 7 As shown, based on the above embodiment, the adjustable magnetic field magnetic separator further includes: a position display panel 10, which is connected to the part of the connecting shaft 241 located outside the drum 21; the position display panel 10 is used to display the bottom contour of the drum 21, the position of the magnetic system module 22, and the size of the sorting space formed by the current position of the drum 21 and the bottom of the forward and reverse double-acting trough body; the position display panel 10 rotates with the connecting shaft 241, thereby displaying the magnetic declination information and the magnetic wrap angle information.

[0111] In this embodiment, the position display board 10 changes with the position of the roller 21. At this time, the gap between the bottom of the tank body 8 and the position display board 10 can be directly observed, and the position information of the magnetic system module 22 on the position display board 10 can also be intuitively displayed. The position display board 10 is driven by the magnetic declination adjustment mechanism, so it not only displays the separation space position information of the roller 21 and the bottom plate of the tank body 8, but also displays the magnetic declination information of the magnetic system module 22, thereby realizing real-time display of magnetic field characteristics and separation space dimensions, and providing more accurate data for effective separation adjustment. The adjustable magnetic separator has the ability to visually adjust the magnetic separation space position relationship throughout the entire process, and can cope with separation experiments of different ore samples.

[0112] The position display board 10 is combined with the above-mentioned magnetic field display device 9. The adjustable magnetic field magnetic separator can realize the key numerical calibration of the experimental magnetic separator parameters by adopting an intuitive monitoring and display method of the magnetic field coefficient and the sorting gap. Its selection data can provide certain guidance for the design of magnetic separator parameters for various mineral samples.

[0113] It is understandable that a ore unloading assembly 70 may be provided on the tank body 8 .

[0114] An overflow height adjusting member 81 may also be provided on the tank body 8 .

[0115] The adjustable magnetic separator provided by the present invention has a wide range of adjustable magnetic induction intensity. By replacing different magnetic pole modules and adjusting the magnetic field, it can achieve a range coverage of up to 300 to 8000 Gs. It can also adjust the spatial magnetic force distribution parameters of multiple groups (for example: four groups) of magnetic poles, and the entire adjustment process is bidirectionally visible, which can ensure the convenience of operation during the adjustment process. Under the same magnetic pole module, the magnetic field parameter adjustment can be completed by relying on only one rotating shaft structure.

[0116] In some embodiments of the present invention, the magnetic field strength adjustment range can be 1000Gs to 4300Gs, the adjustment stroke is 20mm, and the effective sorting space distance is 15 to 30mm. The specific use process is as follows:

[0117] (1) The ore sample is tested to preliminarily determine the range of magnetic field separation parameters, and a reasonable magnetic system module 22 is selected, which can realize the adjustment range distribution of the ore sample, and then the lowest adjustment value is set within the adjustable range and then adjusted from low to high.

[0118] (2) Setting the sorting space distance, the initial sorting space of weakly magnetic minerals is adjusted to a smaller size, and the initial sorting space of strongly magnetic minerals is adjusted to a larger size, and then the optimal sorting space is gradually selected.

[0119] (3) Select a lower initial speed and fine-tune the magnetic declination and speed matching;

[0120] (4) Turn on the machine and start the sorting operation. Analyze the grade and composition of the concentrate and tailings at regular intervals. After the analysis, formulate the next adjustment method and gradually increase the magnetic field strength to a certain value for different ore samples. When adjusting, directly observe the data nameplate value or the digital display screen value manually.

[0121] (5) Adjust the matching relationship between the separation space and the magnetic field strength; adjust the matching relationship between the rotation speed of the magnetic separator and the magnetic field strength, adjust according to the nonlinear increasing principle, study the magnetic field strength under the best mineral processing efficiency, record the key magnetic declination parameters and separation space position parameters at that moment, the rotation speed, magnetic field strength and adsorption coefficient provide a basis for the subsequent production equipment design and selection.

[0122] (6) When changing the forward and reverse flow mode, first determine whether the magnetic pole module needs to be replaced. If so, repeat step 1.

[0123] (7) Adjust the initial position of the magnetic declination and repeat steps 2, 3, 4, and 5.

[0124] (8) Clean the machine and shut it down to complete the operation.

[0125] The adjustable magnetic field magnetic separator provided in the embodiment of the present invention has completed the test machine and completed the trial production of the test machine.

[0126] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention. In the description provided herein, a large number of specific details are described. However, it can be understood that the embodiments of the present invention can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description. In addition, those skilled in the art can understand that although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments means being within the scope of the present invention and forming different embodiments.

Claims

1. A magnetic separator with adjustable magnetic field, It is characterized in that include: A roller device is capable of adjusting the magnetic field strength; the roller device comprises a roller, a magnetic system module and a magnetic field radial adjustment component; The magnetic system module is arranged in the drum; the magnetic field radial adjustment component is connected to the magnetic system module to drive the magnetic system module to rise and fall along the radial direction of the drum, thereby adjusting the magnetic field strength; The adjustable magnetic field magnetic separator also includes: A magnetic field display device, comprising a follower and a display module located outside the drum; The follower is connected to the magnetic field radial adjustment component to follow the movement of the magnetic field radial adjustment component to achieve a matching relationship between the position of the follower and the position of the magnetic system module; the display module includes magnetic field data matching different positions of the follower, and the magnetic field data includes magnetic field intensity; the display module can indicate the current magnetic field data corresponding to the current position of the follower.

2. The adjustable magnetic field magnetic separator according to claim 1, It is characterized in that The magnetic field radial adjustment component comprises: an adjusting shaft, a part of which is located inside the drum and another part of which is located outside the drum; A radial adjustment member connected to the magnetic system module; A conversion structure capable of converting the rotation of the adjusting shaft into a linear motion of the radial adjusting member along the radial direction of the drum; The follower is disposed on a portion of the adjusting shaft located outside the drum to follow the movement of the adjusting shaft.

3. The adjustable magnetic field magnetic separator according to claim 2, It is characterized in that The magnetic field radial adjustment assembly further includes a connecting piece, which is arranged in the drum and can be fixed relative to the adjustment shaft, and a sliding hole is provided on the connecting piece; The radial adjustment member is a magnetic pole slider, which is slidably arranged along the sliding hole; The conversion structure comprises a track disk, a spiral groove arranged on the track disk and a sliding tooth arranged on the magnetic pole slider; the track disk is fixedly connected to the adjustment shaft; and the sliding tooth can move along the spiral groove.

4. The adjustable magnetic field magnetic separator according to claim 2, It is characterized in that The roller device is capable of adjusting the shape of the magnetic field; The magnetic system module comprises a plurality of magnetic pole units sequentially arranged along the circumferential direction of the drum, and each of the magnetic pole units comprises a plurality of magnetic pole modules sequentially arranged along the axial direction of the drum; There are multiple radial adjustment members, and the multiple magnetic pole units are detachably connected to the multiple radial adjustment members in a one-to-one correspondence; different magnetic pole units are connected through the radial adjustment members to adjust the shape of the magnetic field.

5. The adjustable magnetic field magnetic separator according to claim 4, It is characterized in that The follower comprises a rotating block, and the rotating block is fixed to a portion of the adjusting shaft located outside the drum; And / or, the follower includes a slider, which is arranged on the part of the adjusting shaft located outside the drum through a threaded connection; the magnetic field display device also includes a mounting seat, which is fixedly arranged and has a sliding limit structure on it, and the slider can slide along the axial direction of the adjusting shaft under the limitation of the sliding limit structure.

6. The adjustable magnetic field magnetic separator according to claim 5, It is characterized in that The display module includes a pointer and a magnetic field data nameplate; the magnetic field data is marked on the magnetic field data nameplate; The pointer is fixedly connected to the follower, and can follow the movement of the follower to point to the current magnetic field data on the magnetic field data nameplate corresponding to the current position of the follower.

7. The adjustable magnetic field magnetic separator according to claim 5, It is characterized in that The display module comprises: A position measuring element, used for measuring the current position of the follower; a data processor, the position measuring element being in communication with the data processor, and the magnetic field data being stored in the data processor; The display device comprises a data processor capable of processing the position information data of the follower to obtain the current magnetic field data and transmit the data to the display device; the display device comprises a display screen, and the display screen is capable of displaying the current magnetic field data.

8. The adjustable magnetic field magnetic separator according to claim 7, It is characterized in that The magnetic field data also includes magnetic field shape, magnetic force parameters of each of the plurality of magnetic pole units, and magnetic force parameter curves; The display screen includes a plurality of display areas, so as to at least be able to respectively display the magnetic field strength, the magnetic field shape, the magnetic force parameters of each of the plurality of magnetic pole units, and the magnetic force parameter curves of each of the plurality of magnetic pole units.

9. The adjustable magnetic field magnetic separator according to claim 7, It is characterized in that The adjustable magnetic field magnetic separator further comprises: a sorting space adjustment device and an immersion depth displacement sensor, wherein the sorting space adjustment device is connected to the drum device; the immersion depth displacement sensor can detect the displacement of the bottom of the drum and transmit it to the data processor, and the data processor obtains the position information of the bottom of the drum according to the displacement and transmits it to the display; and / or, The drum device also includes: The magnetic deflection angle adjustment assembly comprises a connecting shaft connected to the magnetic system module, wherein a part of the connecting shaft is located outside the drum and a part of the connecting shaft is located inside the drum; a connecting hole extending along the axial direction thereof is provided on the connecting shaft, and at least a part of the adjustment shaft is passed through the connecting shaft; Tank body; a position display plate connected to a portion of the connecting shaft located outside the drum; The position display panel is used to display the bottom contour of the drum, the position of the magnetic system module, and the size of the sorting space formed by the current position of the drum and the bottom of the tank; The position display plate rotates with the connecting shaft, thereby displaying magnetic declination information and magnetic wrap angle information.

10. The adjustable magnetic field magnetic separator according to claim 4, It is characterized in that The adjustable magnetic field magnetic separator comprises: The tank body is a dual-action tank body with both forward and reverse flow functions and has both forward and reverse flow sorting functions; The magnetic pole slider is connected to different magnetic pole units, and a plurality of the magnetic pole units constitute the magnetic system module which is symmetrically arranged about the center line. Combined with the trough body with the dual-action sorting function of forward and reverse flow, forward and reverse flow bidirectional operation is achieved by adjusting the magnetic deflection angle of the magnetic system module.

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