Adjustable-magnetic-field magnetic separator
Patent Information
- Application Number
- AU2024287278
- Authority / Receiving Office
- AU · AU
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-10-11
- Filing Date
- 2024-11-01
- Publication Date
- 2026-09-03
AI Technical Summary
Existing magnetic separators require manual adjustment of the magnetic field based on experience, making it inconvenient to achieve optimal separation for different ore samples.
An adjustable-magnetic-field magnetic separator with a drum device that includes a magnetic system module and a radial magnetic field adjustment assembly, allowing for visual adjustment of magnetic field intensity and shape through a follower and display module, enabling intuitive adjustment of magnetic field parameters.
Facilitates convenient and accurate adjustment of magnetic field intensity and shape, supporting a wide range of magnetic induction intensity adjustments from 300 Gs to 8000 Gs, and enabling dual-action co-current and counter-current mineral separation with reduced operational complexity and cost.
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Abstract
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] The present disclosure claims the priority to the Chinese patent application with the filling No. 202411419062.6 filed with the Chinese Patent Office on October 11, 2024, and entitled “ADJUSTABLE-MAGNETIC-FIELD MAGNETIC SEPARATOR”, the contents of which are incorporated herein by reference in entirety. TECHNICAL FIELD
[0002] The present disclosure relates to the technical field of mining equipment, and particularly, to an adjustable-magnetic-field magnetic separator (i.e., a magnetic separator having adjustable magnetic field). BACKGROUND ART
[0003] The permanent-magnetic drum-type magnetic separator is suitable for enterprises, institutions, and individual users in metallurgical mining mineral processing, and used for separating fine magnetic minerals or removing mixed magnetic minerals from non-magnetic minerals. The permanent-magnetic drum-type magnetic separator is a wet magnetic separator with relatively high magnetic field intensity. By adopting a composite magnetic system composed of rare-earth neodymium-iron-boron (NdFeB) magnetic blocks and ferrite magnetic blocks with high magnetism, it provides high magnetic field intensity. The permanent-magnetic drum-type magnetic separator provides characteristics of deep magnetic field gradient and resistance to demagnetization. Thus, the equipment provides a large processing capacity, strong adaptability to production fluctuations, and good separation performance.
[0004] The working principle of the permanent-magnetic drum-type magnetic separator is as follows. After the ore slurry flows into the tank through the ore feeding box, under the water flow of the ore feeding spray pipe, the ore particles enter the ore feeding region of the tank in a loose state. Under the influence of the magnetic field, magnetic ore particles undergo magnetic interaction to form "magnetic clusters" or "magnetic chains." The "magnetic clusters" or "magnetic chains" are subjected to magnetic force in the ore slurry, thereby moving toward the magnetic poles and being adsorbed on the outer wall of the drum. They are then rotated to the weak-magnetic-field region at the edge of the magnetic system and are finally discharged under the water flow of the ore discharge water pipe.
[0005] When there are changes in material properties or different materials are fed, the adaptability of the magnetic separator will be significantly affected, making it unable to achieve optimal separation performance. In addition, in beneficiation experiments, each mineral provides different particle sizes, associated components, and magnetization coefficients. The separation experiments require adjustable magnetic field functionality.
[0006] In the prior art, some magnetic separators with adjustable magnetic fields are employed.
[0007] For example, Patent CN202061704U discloses a magnetic-field-adjustable washing magnetic separator composed of a base, magnets, supporting rollers, a feeding pipe, a drum, transmission gears, a spray pipe, a discharge chute, an adjustment bolt, and a receiving chute, which provides magnetic field adjustment through a hand-screwed adjustment bolt. Patent CN201505573U discloses a magnetic-field-adjustable drum-type high-intensity magnetic separator that provides adjustment through bolts and nuts.
[0008] Patent CN210121527U discloses a permanent-magnetic-field-adjustable magnetic separator, which adopts a magnetic field adjustment unit composed of a magnetic system, a lifting device, a lifting device shaft, a steering handle, and a steering device hollow shaft, and is capable of completing adjustment for the entire magnetic field in one operation.
[0009] Patent CN201978813U discloses a magnetic-field-adjustable magnetic drum, which adopts a magnetic system support frame and adjustment bolts with spring for reset.
[0010] Patent CN116328941B discloses a magnetic-field instant adjustment system and an adjustment method based on monitoring production process, which can monitor and adjust instantly during the production process according to sampling detection coefficient data. The magnetic field component provides a main shaft and n permanent magnets. The adjustment component provides n adjustment modules, where the adjustment module provides a variable component and a connecting member. The n permanent magnets are respectively connected to the n adjustment modules via n connecting members in one-to-one correspondence.
[0011] Patent US2013 / 0240413 discloses an adjustable-magnetic-field magnetic separator, where the equipment adjusts the position of the magnets using a linkage mechanical device.
[0012] Patent US8196751B2 of Eriez Company discloses a magnetic-field-adjustable permanent-magnetic separator, which adopts a more complex segmented linkage device to adjust the positions of multiple magnetic poles. Magnets at different distances and positions will generate different magnetic field intensities outside the drum.
[0013] However, the problem is that although the magnetic separators in related technologies can achieve magnetic field adjustment, users typically adjust the magnetic field repeatedly based on experience, making it inconvenient to adjust the magnetic field for different ore samples to achieve corresponding separation. SUMMARY
[0014] The objective of the present disclosure is to provide an adjustable-magnetic-field magnetic separator to address the technical problem to a certain extent, where users typically adjust the magnetic field repeatedly based on experience, making it inconvenient to adjust the magnetic field for different ore samples to achieve corresponding separation.
[0015] The present disclosure provides an adjustable-magnetic-field magnetic separator, including: a drum device capable of adjusting a magnetic field intensity, wherein the drum device includes a drum, a magnetic system module, and a radial magnetic field adjustment assembly; the magnetic system module is arranged inside the drum; the radial magnetic field adjustment assembly is connected to the magnetic system module to drive the magnetic system module to move up and down in a radial direction of the drum, thereby the magnetic field intensity changes accordingly; and the adjustable-magnetic-field magnetic separator further includes: a magnetic field display device, comprising a follower and a display module located outside the drum; the follower is connected to the radial magnetic field adjustment assembly to follow the radial magnetic field adjustment assembly to move, thus enabling a matched relationship between a position of the follower and a position of the magnetic system module; the display module includes magnetic field data matching different positions of the follower, wherein the magnetic field data include magnetic field intensity; and the display module is capable of indicating the current magnetic field data corresponding to a current position of the follower.
[0016] Further, the radial magnetic field adjustment assembly includes: an adjustment shaft, with one portion of the adjustment shaft located inside the drum and another portion located outside the drum; a radial adjustment member connected to the magnetic system module; and a conversion structure, capable of converting a 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 portion of the adjustment shaft outside the drum to follow the adjustment shaft to move.
[0017] Further, the radial magnetic field adjustment assembly also includes a connecting member, wherein the connecting member is arranged inside the drum, and the connecting member can be fixed relative to the adjustment shaft. The connecting member is thereon arranged with a sliding hole. The radial adjustment member is a magnetic pole slider, arranged along the sliding hole in a sliding manner; the conversion structure includes a trajectory disk, a spiral groove provided on the trajectory disk, and a sliding tooth provided on the magnetic pole slider; the trajectory disk is fixedly connected to the adjustment shaft; and the sliding tooth moves along the spiral groove.
[0018] Further, the drum device is capable of adjusting the magnetic field shape. The magnetic system module includes multiple magnetic pole units arranged sequentially along a circumferential direction of the drum, wherein each magnetic pole unit includes multiple magnetic pole modules arranged sequentially along an axial direction of the drum; and multiple radial adjustment members are provided, and each magnetic pole unit is detachably connected to one corresponding radial adjustment member of the multiple radial adjustment members; and the magnetic field shape is adjusted by connecting different magnetic pole units to the radial adjustment members.
[0019] Further, the follower includes a rotation block, wherein the rotation block is fixed on the portion of the adjustment shaft outside the drum, or the follower includes a slider, wherein the slider is arranged to the portion of the adjustment shaft outside the drum through a threaded connection. The magnetic field display device further includes a mounting base, wherein the mounting base is fixedly arranged, the mounting base is arranged with a sliding limit structure, and the slider is capable of sliding along the axial direction of the adjustment shaft under a limit by the sliding limit structure.
[0020] Further, the display module includes a pointer and a magnetic field data nameplate. The magnetic field data are marked on the magnetic field data nameplate, the pointer is fixedly connected to the follower, and the pointer is capable of following a motion of the follower and pointing to the current magnetic field data of the magnetic field data nameplate corresponding to the current position of the follower.
[0021] Further, the display module includes: a position measurement element configured for measuring the current position of the follower; a data processor, wherein the position measurement element communicates with the data processor, and the magnetic field data are stored in the data processor; and a display, wherein the data processor is capable of processing position information data of the follower to obtain the current magnetic field data and transmits them to the display, the display includes a screen, and the screen is capable of displaying the current magnetic field data.
[0022] Further, the magnetic field data also include magnetic field shapes, magnetic force parameters and magnetic force parameter curves of multiple magnetic pole units. The screen includes multiple display regions to display at least the magnetic field intensity, the magnetic field shapes, the magnetic force parameter of each of multiple magnetic pole units, and the magnetic force parameter curve of each of multiple magnetic pole units.
[0023] Further, the adjustable-magnetic-field magnetic separator also includes: a separation space adjustment device and an immersion depth displacement sensor, and the separation space adjustment device is connected to the drum device; and the immersion depth displacement sensor detects the displacement of the drum bottom of the drum and transmits it to the data processor. The data processor obtains the positional information of the drum bottom of the drum based on the displacement data and transmits it to the display.
[0024] Further, the drum device also includes: a magnetic declination adjustment assembly, comprising a connecting shaft connected to the magnetic system module, wherein a portion of the connecting shaft is located outside the drum and another portion is located inside the drum, the connecting shaft includes a connection hole extending along an axial direction of the connecting shaft, and at least a portion of the adjustment shaft passes through the connecting shaft; a tank; a position display plate connected to the portion of the connecting shaft outside the drum, where the position display plate is configured to display the bottom contour of the drum, the position of the magnetic system module, and the position of the separation space size formed between 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.
[0025] Further, the adjustable-magnetic-field magnetic separator includes a tank, wherein the tank is a co-current and counter-current dual-action tank with dual-action separation functionality for the co-current and counter-current operations. The magnetic pole sliders connect to different magnetic pole units, and the multiple magnetic pole units form the magnetic system module symmetrically arranged about a central axis; and utilizing the tank with dual-action separation functionality for the co-current and counter-current operations and adjusting the magnetic declination of the magnetic system module, co-current and counter-current bidirectional operations are achieved.
[0026] The adjustable-magnetic-field magnetic separator provided by the present disclosure offers at least the following advantageous effects.
[0027] 1. The present disclosure enables visual adjustment of the magnetic field intensity, facilitating user operation and allowing convenient adjustment of the magnetic field for different ore samples to achieve corresponding separation.
[0028] 2. The adjustable-magnetic-field magnetic separator, provided by the present disclosure, can connect different magnetic pole units through the magnetic pole sliders and drive the magnetic system module to move up and down in the radial direction of the drum, thereby adjusting both the magnetic field shape and magnetic field intensity. Additionally, the radial magnetic field adjustment assembly of the adjustable-magnetic-field magnetic separator is structurally simple and compact, ensuring ease of operation, low cost, and a compact structure of the adjustable-magnetic-field magnetic separator that reduces space occupation.
[0029] 3. The adjustable-magnetic-field magnetic separator, provided by the present disclosure, achieves visual adjustment of the magnetic field shape and magnetic field intensity of the magnetic separator.
[0030] 4. The magnetic separator of the present disclosure covers a wide range of adjustable magnetic induction intensity, achieving coverage from 300 Gs to 8000 Gs through the replacement of different magnetic pole modules and magnetic field adjustments. It also allows the adjustment of magnetic lines of force for four sets of magnetic poles. The adjustment process is entirely bidirectional and visual, ensuring the convenience of operation during adjustment. Magnetic field parameter adjustment is completed using a single rotating shaft structure under the same magnetic pole module.
[0031] 5. The magnetic separator of the present disclosure enables full visual adjustment of the spatial relationship of the magnetic separation space, which can accommodate separation experiments for different ore samples.
[0032] 6. The present disclosure can realize the dual-action co-current and counter-current mineral separation, with a simple overall internal mechanism. Switching between co-current and countercurrent operations for the mineral separation is achieved merely by adjusting the magnetic declination, supplemented by the adjustments of the magnetic field shape, the magnetic field intensity, and the separation spaces; and this basically completes the entire coverage of magnetic separation for ore samples.
[0033] 7. A method for visually monitoring and displaying magnetic field coefficients and separation gaps is adopted in the present disclosure, thus enabling critical parameter calibration for experimental magnetic separators. The selection data derived from this design can provide some guidance for the design of magnetic separator parameters for a wide range of ore samples.
[0034] It should be understood that the foregoing general description and the following detailed embodiments are provided for illustrative and explanatory purposes and are not intended to limit the scope of the present disclosure. The drawings, incorporated and constituting a part of the specification, illustrate the subject matter of the present disclosure. The specification and drawings serve to explain the principles of the present disclosure. BRIEF DESCRIPTION OF DRAWINGS
[0035] In order to more clearly illustrate the specific embodiments of the present disclosure or the technical solution in the prior art, the drawings required to be used in the description of the specific embodiments or the prior art will be briefly introduced as follows. Obviously, the drawings described below are some embodiments of the present disclosure. Those of ordinary skill in the art, without paying inventive labor, may also obtain other drawings according to these drawings.
[0036] FIG. 1 is a schematic structural diagram of an adjustable-magnetic-field magnetic separator according to the embodiments of the present disclosure;
[0037] FIG. 2 is a schematic structural diagram of a drum device in an adjustable-magnetic-field magnetic separator shown in FIG. 1;
[0038] FIG. 3 is a schematic structural diagram of a magnetic field radial adjustment assembly in an adjustable-magnetic-field magnetic separator shown in FIG. 1;
[0039] FIG. 4 is a partial structural schematic diagram of a magnetic field radial adjustment assembly shown in FIG. 3;
[0040] FIG. 5 is a schematic structural diagram of a display module in an adjustable-magnetic-field magnetic separator shown in FIG. 1;
[0041] FIG. 6 is a schematic structural diagram of another display module in an adjustable-magnetic-field magnetic separator shown in FIG. 1;
[0042] FIG. 7 is a schematic structural diagram of an end view of an adjustable-magnetic-field magnetic separator shown in FIG. 1;
[0043] FIG. 8 is a schematic structural diagram of an adjustable-magnetic-field magnetic separator used in a clockwise direction as shown in FIG. 1;
[0044] FIG. 9 is a schematic structural diagram of an adjustable-magnetic-field magnetic separator used in a counterclockwise direction as shown in FIG. 1;
[0045] FIG. 10 is a magnetic induction intensity B curve at a drum surface of an adjustable magnetic separation space for a magnetic system module according to the embodiments of the present disclosure;
[0046] FIG. 11 is a gradient value variation curve of a magnetic system module in a fine selection zone according to the embodiments of the present disclosure;
[0047] FIG. 12 is an adsorption force parameter variation curve of a magnetic system module in a fine selection zone according to the embodiments of the present disclosure.
[0048] Reference numerals: 1 - drum support frame; 2 - drum device; 21 - drum; 22 - magnetic system module; 211 - drum body; 212 - drum flange; 221 - magnetic pole unit; 23 - radial magnetic field adjustment assembly; 231 - adjustment shaft; 232 - trajectory disk; 233 - spiral groove; 234 - magnetic pole slider; 235 - hand wheel; 236 - locking member; 237 - first housing body; 238 -second housing body; 24 - magnetic declination adjustment assembly; 241 - connecting shaft; 242 - driving rod; 243 - fixing frame; 244 - positioning member; 5 - frame; 6 - drum horizontal adjustment device; 7 - separation space adjustment device; 8 - tank; 81 - overflow height adjustment component; 82 - magnetic ore outlet; 9 - magnetic field display device; 91 - mounting base; 92 - limit structure; 93 - slider; 94 - position measurement element; 95 - data processor; 96 -screen; 97 - magnetic field data nameplate; 10 - position display plate; 20 - reduction motor; 30 -transmission shaft; 40 - transmission bearing seat; 50 - drum rotating bearing seat; 60 - adjustment bearing seat; 70 - ore unloading component; 80 - immersion depth displacement sensor. DETAILED DESCRIPTION OF EMBODIMENTS
[0049] A clear and complete description of the technical solutions of the present disclosure will be given below in connection with the drawings. Obviously, the described embodiments are a portion of the embodiments of the present disclosure and not all of the embodiments.
[0050] The components of the embodiments of the present disclosure, which are generally described and shown in the drawings herein, can be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the present disclosure provided in the drawings is not intended to limit the scope of the present disclosure for which protection is claimed, but merely represents selected embodiments of the present disclosure.
[0051] Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without making inventive efforts are within the scope of protection of the present disclosure.
[0052] In the description of the present disclosure, it should be noted that the terms “center”, “top”, “bottom”, “left”, “right”, “vertical”, “horizontal”, “inner”, “outer” “right”, ‘vertical’, ‘horizontal’, ‘inside’, ‘outside’, and the like indicating orientation or positional relationships are based on the orientation or positional relationships shown in the drawings. These terms are merely intended to facilitate the description of the present disclosure and simplify the description and are not intended to indicate or imply that the referenced devices or elements must have a specific orientation, be constructed in a specific orientation, or operate in a specific orientation. Therefore, these terms should not be construed as limiting the present disclosure. In addition, the terms "first” and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
[0053] In the description of the present disclosure, it is important to note that unless otherwise clearly stipulated and limited, the terms “mount", “interconnect" and "connect" 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; and it can be a direct connection, an indirect connection through an intermediary, or an internal communication between two components. Those of ordinary skill in the art can understand the meanings of the above terms in the present disclosure according to specific situations.
[0054] In addition, the terms "horizontal", "vertical" and "overhang" do not mean that elements are required to be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", and it does not mean that the structure must be completely horizontal, but can be slightly inclined.
[0055] As shown in FIGS. 1 to 10, an adjustable-magnetic-field magnetic separator is provided in the present disclosure, which can refer to a wet permanent-magnetic drum-type magnetic separator with adjustable magnetic field shape and strength, including a drum device 2 capable of adjusting the magnetic field intensity, wherein the drum device 2 includes a drum 21, a magnetic system module 22, and a radial magnetic field adjustment assembly 23; the magnetic system module 22 is arranged inside the drum 21; the radial magnetic field adjustment assembly 23 is connected to the magnetic system module 22 to drive the magnetic system module 22 to move up and down in the radial direction of the drum 21, thereby adjusting the magnetic field intensity. The adjustable-magnetic-field magnetic separator further 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 radial magnetic field adjustment assembly 23 to follow the motion of the radial magnetic field adjustment assembly 23, thus enabling a matched relationship between a position of the follower and a position of the magnetic system module 22; the display module includes magnetic field data matching different positions of the follower, where the magnetic field data include magnetic field intensity; and the display module can display the current magnetic field data corresponding to the current position of the follower.
[0056] In the embodiment, the radial magnetic field adjustment assembly 23 drives the magnetic system module 22 to move up and down along the radial direction of the drum 21, thereby adjusting the distance between the magnetic system module 22 and the inner wall of the drum 21 and further regulating the magnetic field intensity. During the process, the movement of the radial magnetic field adjustment assembly 23 determines the movement distance of the magnetic system module 22. The movement of the radial magnetic field adjustment assembly 23 and the movement distance of the magnetic system module 22 have a corresponding relationship. When the radial magnetic field adjustment assembly 23 moves to an adjustment position, the magnetic system module 22 correspondingly moves to a module position. When the radial magnetic field adjustment assembly 23 moves to another adjustment position, the magnetic system module 22 correspondingly moves to another module position. That is, a position of the radial magnetic field adjustment assembly 23 and a position of the magnetic system module 22 have a matched relationship. At the same time, the radial magnetic field adjustment assembly 23 drives the follower to move, and the movement of the radial magnetic field adjustment assembly 23 determines the movement of the follower. Therefore, the movement of the radial magnetic field adjustment assembly 23 and the movement of the follower have a corresponding relationship. When the radial magnetic field adjustment assembly 23 moves to an adjustment position, the follower correspondingly moves to a follower position. When the radial magnetic field adjustment assembly 23 moves to another adjustment position, the follower correspondingly moves to another follower position. That is, a position of the radial magnetic field adjustment assembly 23 and a position of the follower have a matched relationship. Thus, a position of the follower and a position of the magnetic system module 22 have a matched relationship. When the follower is at a follower position, the magnetic system module 22 is correspondingly at a module position.
[0057] The different positions of the magnetic system module 22 relative to the drum 21 result in different magnetic field intensities and other magnetic field data for magnetic separation. One module position corresponds to one piece of magnetic field data, such that one follower position corresponds to one piece of 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 based on the current position of the follower. Magnetic field data include magnetic field intensity, and the display module can at least display the current magnetic field intensity. When the user selects the corresponding magnetic field intensity based on specific separation materials, they can adjust the magnetic system module 22 through the radial magnetic field adjustment assembly 23. During the adjustment process, the user can directly observe whether the adjustment is in place based on the current magnetic field intensity indicated by the display module. When the display module shows the required magnetic field intensity, the user can stop adjusting the position of the magnetic system module 22, thus achieving a visible adjustment process of the magnetic field intensity.
[0058] The visible adjustment process of the magnetic field intensity provided by the adjustable-magnetic-field magnetic separator in the embodiment can enable users to intuitively understand the adjustment process of the magnetic field intensity, allowing them to quickly, conveniently, and accurately adjust the magnetic field intensity to meet the magnetic field intensity required by the materials, which facilitates user operation. Additionally, the adjustable-magnetic-field magnetic separator provided in the embodiment converts complex magnetic field parameters into simple positional changes of the follower. The corresponding magnetic field data can be obtained merely by the positional change of the follower (which can be understood as the displacement of the follower, such as angular displacement or linear displacement). This avoids the use of magnetic sensors for real-time detection and the use of high-cost components, thereby reducing production and maintenance costs. Furthermore, as the follower is located outside the drum 21, it is easy to assemble. Users can also understand the movement of the radial magnetic field adjustment assembly 23 based on the movement of the follower, making it easier for users to grasp the adjustment status of the magnetic field intensity.
[0059] 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 through experiments, simulations, calculations, and other methods. Specifically, the corresponding relationship between the position of the magnetic system module 22 and the magnetic field coefficient can be obtained through experiments, simulations, calculations, and other methods. The magnetic field coefficient includes magnetic field intensity B and magnetic field gradient. Based on the comprehensive calculation of magnetic field intensity and magnetic field gradient, the adsorption force factor can be obtained, and the adsorption force of the ore can be derived based on the adsorption force factor.
[0060] The adsorption strength depends on the weight of the ore, i.e., the particle size, the specific gravity of the ore, and its relative permeability. Simultaneously, 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 accommodate the properties of different ores. Therefore, based on magnetic separation theory, it is necessary for the magnetic separator to provide values for magnetic induction intensity B and adsorption force factor to facilitate operators in adjusting and controlling the corresponding parameters of the magnetic separator. Clear experimental magnetic field parameters also provide a theoretical basis for selecting the magnetic separator model for subsequent production equipment.
[0061] The calibration can be performed by combining the magnetic circuit design and data analysis modules. By assigning specific parameters and materials to the magnetic circuit unit under some conditions and using software calculations, detailed magnetic field parameter data can be obtained for the conditions. A series of data sets for key path changes and adsorption force changes in the adjustable magnetic field can be derived. The data sets and the movement of the follower have a matched relationship, thus allowing the detailed magnetic field data to be obtained from the positional changes of the follower.
[0062] Other desired magnetic field-related data can also be obtained, which will not be elaborated further herein.
[0063] Specifically, as shown in FIG. 1, the adjustable-magnetic-field magnetic separator further includes a drum support frame 1, with the drum 21 arranged on the drum support frame 1 in a rotating manner.
[0064] The radial magnetic field adjustment assembly 23 can adopt conventional methods. For example, the radial magnetic field adjustment assembly 23 can include a fixed shaft, an adjustment plate, an adjustment slider 93, and an electric telescopic rod. The fixed shaft passes through the drum 21 and connects to the drum support frame 1 to avoid affecting the rotation of the drum 21. The adjustment plate is fixed on the fixed shaft, and the adjustment slider 93 is arranged on the adjustment plate in a sliding manner along the radial direction of the drum 21. The electric telescopic rod is fixed on the adjustment plate and connected to the adjustment slider 93 to drive the adjustment slider 93 to move, thereby driving the magnetic system module 22 to move.
[0065] As an optional solution, the radial magnetic field adjustment assembly 23 includes an adjustment shaft 231, with one portion of the adjustment shaft 231 located inside the drum 21 and another portion located outside the drum 21; a radial adjustment member connected to the magnetic system module 22; and a conversion structure, capable of converting the rotation of the adjustment shaft 231 into linear motion of the radial adjustment member along the radial direction of the drum 21. The follower is arranged on the portion of the adjustment shaft 231 outside the drum 21 to follow the motion of the adjustment shaft 231.
[0066] In the embodiment, driving the adjustment shaft 231 to rotate enables the conversion structure to convert the rotation of the adjustment shaft 231 into linear movement of the radial adjustment member along the radial direction of the drum 21. The radial adjustment member drives the magnetic system module 22 to move up and down along the radial direction of the drum 21. The radial magnetic field adjustment assembly 23 with this structure occupies less space.
[0067] The conversion structure can have various forms. For example, the conversion structure can include gears, racks, and connecting rods. A gear is coaxially fixed on the adjustment shaft 231, and the rack meshes 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. In this case, the radial adjustment member can be a slider 93, a sliding rod, and so on.
[0068] As an optional solution, as shown in FIG. 2 to FIG. 4, the radial magnetic field adjustment assembly 23 also includes a connecting member, wherein the connecting member is arranged inside the drum 21, and the connecting member can be fixed relative to the adjustment shaft 231. The connecting member is thereon arranged with a sliding hole. The radial adjustment member is a magnetic pole slider 234, which is arranged along the sliding hole in a sliding manner. The conversion structure includes a trajectory disk 232, a spiral groove 233 provided on the trajectory disk 232, and a sliding tooth provided on the magnetic pole slider 234. The trajectory disk 232 is fixedly connected to the adjustment shaft 231. The sliding tooth moves along the spiral groove 233.
[0069] In the embodiment, the adjustment shaft 231 is driven to rotate, and the connecting member remains stationary during the rotation of the adjustment shaft 231. The magnetic pole slider 234 and the trajectory disk 232 are constrained in the circumferential direction. The adjustment shaft 231 drives the trajectory disk 232 to rotate, the spiral groove 233 follows the rotation, and the magnetic pole slider 234 moves relative to the spiral groove 233. Thus, the magnetic pole slider 234 can move in the radial direction of the drum 21, toward or away from the drum 21; this movement enables the magnetic system module 22 to move toward or away from the drum 21. In this way, a distance between a side of the magnetic system module 22 away from the adjustment shaft 231 and an inner wall of a portion of the drum 21 corresponding to the magnetic system module 22 is enabled. An outer wall of a portion of the drum 21 corresponding to the magnetic system module 22 forms a separation region. That is, the distance between the magnetic system module 22 and the separation region is adjusted, achieving the adjustment of the magnetic field intensity in the separation region. The entire adjustment process is simple to operate. Additionally, the radial magnetic field adjustment assembly 23 of the adjustable-magnetic-field magnetic separator is structurally simple and compact. By adopting a simple mechanical structure, it can achieve adjustments of the magnetic field shape and magnetic field intensity, and ensure ease of operation, low equipment cost, and a compact structure of the adjustable-magnetic-field magnetic separator that reduces space occupation.
[0070] As shown in FIGS. 2 to 4, further to the above embodiments, the drum device 2 is capable of adjusting the magnetic field shape. The magnetic system module 22 includes multiple magnetic pole units 221 arranged sequentially along the circumferential direction of the drum 21, wherein each magnetic pole unit 221 includes multiple magnetic pole modules arranged sequentially along the axial direction of the drum 21. Multiple radial adjustment members are provided, and each magnetic pole unit 221 is detachably connected to one corresponding radial adjustment member of the multiple radial adjustment members. The magnetic field shape is adjusted by connecting different magnetic pole units 221 to the radial adjustment members.
[0071] In the embodiment, each magnetic pole unit 221 can be configured with magnetic pole modules having different magnetic field parameters based on functional requirements. Multiple magnetic pole units 221 form a complete magnetic system module 22. The magnetic system module 22, composed of magnetic pole modules with varying magnetic field parameters, has different initial magnetic field intensities, magnetic wrap angles, and numbers of magnetic poles. Each magnetic pole unit 221 is detachably connected to a corresponding magnetic pole slider 234 of the multiple radial adjustment members 234. This arrangement allows the replacement of the magnetic system module 22 with a suitable one according to specific magnetic field adjustment requirements. Thus, the adjustable-magnetic-field magnetic separator, provided by the present disclosure, can connect different magnetic pole units 221 through the magnetic pole sliders 234 and drive the magnetic system module 22 to move up and down in the radial direction of the drum 21, thereby adjusting both the magnetic field shape and magnetic field intensity.
[0072] For the same set of magnetic system modules 22, adjusting the distance between the magnetic system module 22 and the separation region of the drum 21 can enable a range of magnetic field intensity adjustments. Replacing the different magnetic system module 22 allows for different ranges of magnetic field intensity adjustments. Combining the adjustment of the distance between the magnetic system module 22 and the separation region within a preset adjustment stroke and the replaceability of the magnetic system module 22, the adjustable-magnetic-field magnetic separator in the embodiments of the present disclosure achieves a magnetic field intensity adjustable range of 300 to 8000 Gs, thus enabling the separation of a wider variety of materials.
[0073] As an optional solution, the follower includes a rotation block, wherein the rotation block is fixed on the portion of the adjustment shaft 231 outside the drum 21.
[0074] In the embodiment, the follower rotates following the adjustment shaft 231, meaning the angular displacement of the follower corresponds to the linear displacement of the radial adjustment member (which, specifically, can be the magnetic pole slider 234).
[0075] As an optional solution, the follower includes a slider 93, wherein the slider 93 is arranged to the portion of the adjustment shaft 231 outside the drum 21 through a threaded connection. Specifically, the portion of the adjustment shaft 231 outside the drum 21 is arranged with external threads, the slider 93 is arranged with a through hole, and the through hole is therein provided with internal threads that fit the external threads. The magnetic field display device 9 further includes a mounting base 91, wherein the mounting base 91 is fixedly arranged, and the mounting base 91 can be connected to the drum support frame 1. The mounting base 91 is arranged with a sliding limit structure 92, and the slider 93 can slide along the axial direction of the adjustment shaft 231 under a limit by the sliding limit structure 92.
[0076] In the embodiment, a lead screw mechanism enables the movement of the slider 93. The linear displacement of the slider 93 can be used to calculate the rotation angle of the trajectory disk 232, thereby determining the lift distance of the magnetic system module 22.
[0077] As an optional solution, as shown in FIG. 6, the display module includes a pointer and a magnetic field data nameplate 97. The magnetic field data are marked on the magnetic field data nameplate 97 (to form a scale). The pointer is fixedly connected to the follower, and the pointer can follow the motion of the follower and point to the current magnetic field data of the magnetic field data nameplate 97 corresponding to the current position of the follower.
[0078] In the embodiment, the magnetic field data nameplate 97 can be fixed on the mounting base 91. The adjustment shaft 231 rotates thereby adjusting the magnetic system module 22 to move up and down. Simultaneously, the follower drives the pointer to move. The pointer indicates the corresponding position on the magnetic field data nameplate 97, which is the magnetic field data at the current position of the magnetic system module 22.
[0079] As shown in FIG. 5, based on the above embodiment, the mounting base 91 is further provided with a viewing window, and the magnetic field data nameplate 97 is arranged at the viewing window so that users can observe the motion state of the follower through the viewing window.
[0080] As shown in FIG. 5, based on the above embodiment, the adjustable-magnetic-field magnetic separator can include a locking member 236 to lock the position of the adjustment shaft 231. The locking member 236 can have various structural forms, such as using fasteners cooperating with holes or adopting a snap structure. The locking member 236 can be connected to the drum support frame 1. If the magnetic field display device 9 includes the mounting base 91, the locking member 236 can be arranged between the mounting base 91 and the adjustment shaft 231. The locking member 236 fixes the position of the adjustment shaft 231. As shown in FIG. 5, the locking member 236 includes a limiting plate connected to the mounting base 91, a hoop connected to the adjustment shaft 231, and a connecting plate between the limiting plate and the hoop connected through fasteners.
[0081] If the follower is a rotation block rotating synchronously with the adjustment shaft 231, the pointer follows the rotation of the follower. The magnetic field data nameplate 97 can be configured as a disk shape or a sector shape, arranged coaxially with the adjustment shaft 231. If the follower includes a slider 93 moving linearly with the motion of the adjustment shaft 231, the magnetic field data nameplate 97 can be configured as a strip plate extending along the axial direction of the adjustment shaft 231.
[0082] As an optional solution, as shown in FIG. 5, the display module includes a position measurement element 94 configured for measuring the current position of the follower; a data processor 95, where the position measurement element communicates with the data processor 95, and the magnetic field data are stored in the data processor 95; and a display, wherein the data processor 95 can process the position information data of the follower to obtain the current magnetic field data and transmits them to the display, the display includes a screen 96, and the screen 96 is capable of displaying the current magnetic field data.
[0083] In the embodiment, the data processor 95 can calculate and analyze the information transmitted by the position measurement element 94 to output the final magnetic field-related information to the screen 96. Users can directly obtain the magnetic field information from the screen 96, making operation convenient.
[0084] The position measurement element 94 can 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 following the adjustment shaft 231, the displacement sensor can be an angular displacement sensor. If the follower moves linearly with the rotation of the adjustment shaft 231, the displacement sensor can be a linear displacement sensor.
[0085] It should be noted that the magnetic field display device 9 can display magnetic field information using only the position measurement element 94, the data processor 95, and the display; or only through the pointer and magnetic field data nameplate 97. It can also display magnetic field information using both the position measurement element, the data processor 95, and the display, and the pointer and magnetic field data nameplate 97.
[0086] Based on the above embodiment, the magnetic field data also include magnetic field shapes, magnetic force parameters and magnetic force parameter curves of multiple magnetic pole units 221. The screen 96 includes multiple display regions to display at least the magnetic field intensity, the magnetic field shapes, the magnetic force parameter of each of multiple magnetic pole units 221, and the magnetic force parameter curve of each of multiple magnetic pole units 221.
[0087] According to the movement distance of the slider 93, various magnetic field data results can be obtained. For example, the magnetic pole units 221 consist of four units, which are a feeding magnetic pole, a sorting magnetic pole, a fine selection magnetic pole, and an unloading magnetic pole, thus forming the corresponding feeding region, sorting region, fine selection region, and unloading region. FIG. 10 is a variation curve of the magnetic induction intensity B (unit: Gs) at a drum surface of an adjustable magnetic separation space for a magnetic system module 22 according to the embodiment of the present disclosure. The adjustable values of multiple magnetic pole units 221 within the range of 0-20 mm are collectively calibrated as numerical curves, serving as magnetic field parameter curves. FIG. 11 is a gradient value variation curve of a magnetic system module 22 in a fine selection zone according to the embodiment. The adjustable values of multiple magnetic pole units 221 are collectively calibrated as numerical curves, serving as magnetic field parameter curves. FIG. 12 is an adsorption force parameter variation curve of a magnetic system module 22 in a fine selection zone according to the embodiment of the present disclosure, with a unit of Gs2 / mm. The value represents the magnetic adsorption force parameter used in the separation operation of the magnetic separator. Different ore samples require different magnetic adsorption forces. The present disclosure offers a straightforward method for visually observing magnetic field parameters without complex devices such as magnetic force sensors, featuring low cost, stability, and efficiency, with significant market application value. Multiple display regions can be set up to show different parameter data, thus allowing users to better understand the characteristics of the magnetic field.
[0088] As shown in FIG. 1, further to the above embodiments, the drum device 2 further includes a magnetic declination adjustment assembly 24. The magnetic declination adjustment assembly 24 can include a connecting shaft 241, a driving rod 242, a fixing frame 243, and a positioning member 244. A portion of the connecting shaft 241 is located outside the drum 21, and the other portion is inside the drum 21. One end of the driving rod 242 is fixedly connected to the portion of the connecting shaft 241 outside the drum 21 (where connections can be realized by welding, fastener connection, or interference connection). The driving rod 242 is positioned outside the drum 21. The fixing frame 243 is fixed to the drum support frame 1. The positioning member 244 connects the driving rod 242 to the fixing frame 243 to fix the position of the driving rod 242. A connecting member is fixed to the connecting shaft 241. The connecting shaft 241 is provided with a connection hole extending along the axial direction of the connecting shaft (where the connecting shaft 241 can be hollow), and at least a portion of the adjustment shaft 231 passes through the connecting shaft 241.
[0089] In the adjustable-magnetic-field magnetic separator provided in the embodiment, the connecting shaft 241 can be driven to rotate around its own axis as the centerline of rotation. The connecting shaft 241 drives the connecting member to rotate around the axis of the connecting shaft 241 as the centerline of rotation. Thereby, the connecting member drives the radial magnetic pole slider 234 to swing with the axis of the connecting shaft 241 as the centerline of rotation, which in turn drives the magnetic system module 22 to swing with the axis of the connecting shaft 241 as the centerline of rotation. This enables the adjustment in the magnetic declination of the magnetic system module 22.
[0090] Therefore, the adjustable-magnetic-field magnetic separator provided in the embodiment can adjust the magnetic declination. Furthermore, the magnetic declination adjustment assembly 24 and the radial magnetic field adjustment assembly 23 in the adjustable-magnetic-field magnetic separator provided in the embodiment are not independently arranged. At least a portion of the adjustment shaft 231 passes through the connecting shaft 241, and the connecting member is connected to the connecting shaft 241. This arrangement avoids mutual interference between the magnetic declination adjustment process and the radial adjustment process of the module. It is also possible to make the magnetic declination adjustment assembly 24 and the radial magnetic field adjustment assembly 23 compact in structure, take up less space, and have fewer parts. Therefore, the adjustable-magnetic-field magnetic separator can be made compact, take up less space, and have a low cost.
[0091] It should be understood that, for ease of adjustment, the connecting shaft 241, the adjustment shaft 231, and the drum 21 are coaxially arranged.
[0092] Information such as the magnetic wrap angle and the number of magnetic poles for different magnetic separation assemblies can be stored in the data processor 95. A magnetic declination sensor can be mounted on the support legs of the drum 21 to detect the rotation angle of the connecting shaft 241. The rotation angle of the connecting shaft 241 and the swing angle of the magnetic system module 22 have a matched relationship, where the swing angle of the magnetic system module 22 determines the magnetic declination of the magnetic system module 22. Thus, the rotation angle of the connecting shaft 241 and the magnetic declination have a matched relationship. The magnetic declination of the magnetic system module 22 can be obtained based on the rotation angle of the connecting shaft 241. This achieves visual adjustment of both the magnetic field shape and magnetic field intensity of the magnetic separator, transforming complex magnetic field coefficient conversions into simple adjustments of the magnetic system module 22 and magnetic field parameters. It should be noted that the above description is merely illustrative. Other methods can also be used to achieve the same functionality, and these are not further elaborated here.
[0093] Based on the above embodiment, the connecting member can be a connecting block. A sliding hole is provided on a wall of the connecting block in the radial direction of the drum 21 (where the wall intersects the radial direction of the drum 21). A connection hole communicating with the sliding hole is provided on the wall of the connecting block in the axial direction of the drum 21. The magnetic pole slider 234 is arranged in an inverted L-shape. A portion of the magnetic pole slider 234 slides within the sliding hole, and another portion extends out of the sliding hole. A sliding tooth is provided on the wall of the magnetic pole slider 234 in the axial direction of the drum 21. The sliding tooth extends through the connection hole to connect the spiral groove 233. Additionally, the lift distance of the magnetic system module 22 depends on the rotation spacing and the rotation angle of the trajectory groove. When the trajectory adjusts the lift distance of the magnetic system module 22, it is also possible to adjust the size of the gap between the magnetic pole units 221, thereby changing the magnetic force parameter distribution in the separation space and increasing the variety of minerals that can be sorted by a magnetic separator.
[0094] As an optional solution, as shown in FIG. 2 to FIG. 3, the connecting member includes a first housing body 237 and a second housing body 238 that are joined together, and the first housing body 237 and the second housing body 238 form a mounting cavity. The trajectory disc 232 is arranged within the mounting cavity, and a portion of the magnetic system slider 93 is also arranged within the mounting cavity, which means that the sliding tooth and the spiral groove 233 are connected within the mounting cavity. A sliding hole is provided on the second housing body 238. One of the side wall of the sliding hole and the side wall of the magnetic pole slider 234 is provided with a sliding groove, and the other is provided with a guide rail. Specifically, the side wall of the sliding hole can be provided with a sliding groove and a guide rail is provided on the magnetic pole slider 234; or, the side wall of the sliding hole can be provided with a guide rail and a sliding groove is provided on the magnetic pole slider 234. With the arrangement, the sliding of the magnetic pole slider 234 can be guided, making the movement of the magnetic pole slider 234 smoother.
[0095] As shown in FIG. 2, the connecting shaft 241 can include a first shaft section and a second shaft section arranged at intervals along the axial direction. The first housing body 237 is fixedly connected to the first shaft section, and the second housing body 238 is fixedly connected to the second shaft section. The spacing exposes a portion of the adjustment shaft 231, and the trajectory disc 232 connects to the adjustment shaft 231 at the spacing.
[0096] In the embodiment, manual control of the rotation of the driving rod 242 drives 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 using the positioning member 244, thereby fixing the current magnetic declination.
[0097] The positioning member 244 can include a telescopic rod and multiple adjustment holes arranged at intervals along the length direction of the driving rod 242. The telescopic rod includes a fixed portion arranged on the fixing frame 243 and a telescopic portion connected to the fixing frame 243 through a threaded connection. One end of the telescopic portion, away from the fixed portion, can be connected to the adjustment hole via a fastener. Of course, the above can also be realized by other technical means.
[0098] Optionally, the fixing frame 243 can include an indicator plate. The indicator plate is provided with markings indicating the rotation angle of the driving rod 242 or directly converted into the adjustment angle of the magnetic declination of the magnetic system module 22, thus facilitating user control over the adjustment amount.
[0099] It is also possible to drive the connecting shaft 241 by means of a motor, a cylinder, an oil cylinder, etc., which can be realized to drive and also to fix the current position of the connecting shaft 241.
[00100] As shown in FIGS. 1 and 2, based on the above embodiments, the drum 21 can further include a drum flange 212 and a drum body 211 with openings at both ends. Each end of the drum body 211 is provided with a drum flange 212. The adjustable-magnetic-field magnetic separator further 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 fixed relative to the drum support frame 1. The transmission shaft 30 is connected to the reduction motor 20 in a transmission manner, and the transmission shaft 30 passes through the transmission bearing seat 40 to connect the drum flange 212 near it in a transmission manner, thus driving the drum flange 212 to rotate and, in turn, driving the entire drum 21 to rotate. The two drum flanges 212 can be connected to the connecting shaft 241 in a rotating manner via a drum rotating bearing seat 50. Both the connecting shaft 241 and the adjustment shaft 231 pass through the adjustment bearing seat 60, and the adjustment bearing seat 60 provides support for the connecting shaft 241 and the adjustment shaft 231. Both the connecting shaft 241 and the adjustment shaft 231 pass through the two drum rotating bearing seats 50 for support.
[00101] Based on the above embodiments, it is also possible to drive the adjustment shaft 231 by means of a motor, a cylinder, or an oil cylinder, etc., which can be realized to drive and also fix the current position of the connecting shaft 241.
[00102] As an optional solution, as shown in FIG. 1, the radial magnetic field adjustment assembly 23 further includes: a hand wheel 235, wherein the hand wheel 235 is fixedly connected to the adjustment shaft 231, and the hand wheel 235 is located outside the drum 21; a locking member 236, which fixes the position of the adjustment shaft 231 after the hand wheel 235 drives the adjustment shaft 231 to rotate.
[00103] In the embodiment, the hand wheel 235 can be manually rotated to drive the adjustment shaft 231 to rotate, resulting in low cost.
[00104] As shown in FIGS. 1 and 7, based on any of the above embodiments, the adjustable-magnetic-field magnetic separator further includes: a frame 5, wherein a tank 8 is provided on the frame 5.
[00105] The adjustable-magnetic-field magnetic separator further includes a separation space adjustment device 7 and an immersion depth displacement sensor 80. The separation space adjustment device 7 is connected to the drum device 2, where the separation space adjustment device 7 can adjust an immersion depth of the drum 21, and the immersion depth of the drum 21 is the distance between the bottom of the drum 21 and the tank bottom. The immersion depth displacement sensor 80 can detect the displacement of the drum bottom of the drum 21 and transmit it to the data processor 95. The data processor 95 obtains the positional information of the drum bottom of the drum 21 based on the displacement data and transmits it to the display.
[00106] In the embodiment, by detecting the bottom position of the drum 21, or understandably, the detection of the displacement of the bottom of the drum 21 relative to the bottom of the tank 8, the immersion depth of the drum 21, i.e., the gap in the separation space, can be determined. This enables visualization of the adjustment process for the separation gap.
[00107] As shown in FIGS. 1 and 7, based on any of the above embodiments, the adjustable-magnetic-field magnetic separator further includes a drum horizontal adjustment device 6, connected to the separation space adjustment device 7. One of the drum horizontal adjustment device 6 and the separation 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.
[00108] Optionally, a horizontal displacement sensor can be provided to measure the horizontal displacement of the drum device 2.
[00109] As shown in FIGS. 8 and 9, in the width direction of the frame 5, both sides of the tank 8 are provided with magnetic ore outlets 82, thereby allowing the counterclockwise operation and the clockwise operation of the drum 21. In other words, a co-current and counter-current dualaction tank is adopted by the tank 8. At this time, the magnetic pole sliders 234 connected to different magnetic pole units 221 can be arranged, and multiple magnetic pole units 221 form the magnetic system module 22 symmetrically arranged about a central axis. By adjusting the magnetic declination of the magnetic system module 22, co-current and counter-current bidirectional operations are achieved. For example, as shown in FIGS. 8 and 9, which are only for illustrative purposes and not limiting, the ore inlet is arranged on the left side, with magnetic ore outlets 82 arranged on both the left side and right side. During co-current operation (when the drum 21 rotates clockwise), the magnetic declination adjustment assembly 24 can adjust the center of the magnetic system module 22 to be offset toward the left relative to the center of the drum 21. During counter-current operation (when the drum 21 rotates counterclockwise), the magnetic declination adjustment assembly 24 can adjust the center of the magnetic system module 22 to be offset toward the right relative to the center of the drum 21. This realizes the dual-action co-current and counter-current mineral separation, with a simple overall shape of the internal mechanism. Switching between co-current and counter-current operations for the mineral separation is achieved merely by adjusting the magnetic declination, supplemented by the adjustments of the magnetic field shape, the magnetic field intensity, and the separation spaces; and this basically completes the entire coverage of magnetic separation for ore samples.
[00110] It is understood that the specialized magnetic system module 22 can also be configured for the co-current and counter-current operations.
[00111] As shown in FIG. 7, further to the above embodiments, The adjustable-magnetic-field magnetic separator further includes: a position display plate 10 connected to the portion of the connecting shaft 241 outside the drum 21, where the position display plate 10 is configured to display the bottom contour of the drum 21, the position of the magnetic system module 22, and the position of the separation space size formed between the current position of the drum 21 and the bottom of the co-current and counter-current dual-action tank. The position display plate 10 rotates with the connecting shaft 241, thereby displaying magnetic declination information and magnetic wrap angle information.
[00112] In this embodiment, the position display plate 10 moves with the position changes of the drum 21. This allows direct observation of the gap between the bottom of the tank 8 and the position display plate 10. Additionally, it is also possible to directly visualize the positional information of the magnetic system module 22 on the position display plate 10. The position display plate 10 is driven by the magnetic declination adjustment mechanism, so it not only displays the positional information of the separation space between the drum 21 and the bottom plate of the tank 8 but also shows the magnetic declination information of the magnetic system module 22. This enables real-time display of magnetic field characteristics and the separation space size and provides more precise data for effective separation adjustments. The adjustable magnetic separator enables full visual adjustment of the spatial relationship of the magnetic separation space, which can accommodate separation experiments for different ore samples.
[00113] By combining the position display plate 10 with the magnetic field display device 9 described above, the adjustable-magnetic-field magnetic separator can more effectively utilize a method for visually monitoring and displaying magnetic field coefficients and separation gaps, thus enabling critical parameter calibration for experimental magnetic separators. The selection data derived from this design can provide some guidance for the design of magnetic separator parameters for a wide range of ore samples.
[00114] Understandably, it is also possible to arrange an ore unloading component 70 on the tank 8.
[00115] The tank 8 can further arrange an overflow height adjustment component 81.
[00116] The adjustable magnetic separator provided in the present disclosure covers a wide range of adjustable magnetic induction intensities, achieving coverage from 300 Gs to 8000 Gs through the replacement of different magnetic pole modules and magnetic field adjustments. It also allows the adjustment of spatial magnetic force distribution parameters for multiple sets (e.g., four sets) of magnetic poles. The adjustment process is entirely bidirectional and visual, ensuring the convenience of operation during adjustment. Magnetic field parameter adjustment is completed using a single rotating shaft structure under the same magnetic pole module.
[00117] In some embodiments of the present disclosure, the range of magnetic field intensity adjustments is between 1000 Gs and 4300 Gs, with an adjustment stroke of 20 mm and an effective separation space distance of 15 to 30 mm. The specific usage process is as follows:
[00118] (1) preliminary determining the range of magnetic field selection parameters by the ore sample testing, and selecting a suitable magnetic system module 22, wherein the module can achieve the adjustment range for the ore sample, and setting the minimum value for adjustment within the adjustment range and then adjusting from low to high;
[00119] (2) setting the separation space distance, adjusting an initial separation space to be smaller for weakly magnetic minerals, adjusting an initial separation space to be larger for strongly magnetic minerals, and then gradually selecting the optimal separation space;
[00120] (3) selecting a lower initial speed, and fine-tuning the magnetic declination to match the rotation speed;
[00121] (4) starting up and beginning the separation operation, analyzing the grades and compositions of the ore concentrate and tailings at intervals, and based on the analysis, determining the next adjustment strategy, and gradually increasing the magnetic field intensity to a certain value for different ore samples, where the data value on the data nameplate or the data value on the digital screen are directly observed by users during adjustments;
[00122] (5) adjusting the matched relationship between the separation space and magnetic field intensity, adjusting the matched relationship between the rotation speed of the magnetic separator and the magnetic field intensity according to a nonlinear increasing principle, studying the magnetic field intensity at the optimal beneficiation efficiency, and recording the key magnetic declination parameters, separation space position parameters, rotation speeds, magnetic field intensities, and adsorption coefficients at this moment as the basis for subsequent design and selection for the production equipment;
[00123] (6) determining firstly, when switching between co-current and counter-current modes, whether the magnetic pole module needs to be replaced, and if replacement is necessary, repeating step 1;
[00124] (7) adjusting the initial position of the magnetic declination and repeating steps 2, 3, 4, and 5; and
[00125] (8) cleaning the machine and shutting it down to finish the operation.
[00126] The adjustable-magnetic-field magnetic separator provided by the embodiments of the present disclosure has completed the prototype machine and has finished the trial production of the experimental machine.
[00127] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present disclosure and are not intended to be a limitation thereof. Notwithstanding the detailed description of the present disclosure with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that one may still modify the technical solution described in the foregoing embodiments, or make equivalent substitutions for some or all of the technical features therein. These modifications or substitutions do not depart the essence of the corresponding technical solution from the scope of the technical solution of the embodiments of the present disclosure. The specification provided herein describes numerous specific details. However, it is understood that the embodiments of the present disclosure can be practiced without these specific details. In some embodiments, well-known methods, structures, and techniques are not detailed to avoid obscuring the understanding of the specification. Furthermore, those skilled in the art will appreciate that although some embodiments described herein include certain features found in other embodiments, but not others, the combination of features from different embodiments is considered within the scope of the present disclosure and forms different embodiments. INDUSTRIAL PRACTICALITY
[00128] The adjustable-magnetic-field magnetic separator of the present disclosure is capable of adjusting the magnetic field shape and the magnetic field intensity. Adjusting the magnetic field characteristics enables the co-current and counter-current bidirectional operations and the realtime display of the separation space. The present disclosure can be applied to the field of mining equipment.
Claims
1. An adjustable-magnetic-field magnetic separator, comprising:a drum device, capable of adjusting a magnetic field intensity, wherein the drum device comprises a drum, a magnetic system module, and a radial magnetic field adjustment assembly; the magnetic system module is arranged inside the drum; the radial magnetic field adjustment assembly is connected to the magnetic system module to drive the magnetic system module to move up and down in a radial direction of the drum, thereby adjusting the magnetic field intensity;and the adjustable-magnetic-field magnetic separator further comprises:a magnetic field display device, comprising a follower and a display module located outside the drum; the follower is connected to the radial magnetic field adjustment assembly to follow the radial magnetic field adjustment assembly to move, thus enabling a matched relationship between a position of the follower and a position of the magnetic system module; the display module comprises magnetic field data matching different positions of the follower, wherein the magnetic field data comprise the magnetic field intensity; and the display module is capable of indicating current magnetic field data corresponding to a current position of the follower.
2. The adjustable-magnetic-field magnetic separator according to claim 1, whereinthe radial magnetic field adjustment assembly comprises:an adjustment shaft, with one portion of the adjustment shaft located inside the drum and another portion located outside the drum;a radial adjustment member, connected to the magnetic system module; anda conversion structure, capable of converting a rotation of the adjustment shaft into a linear motion of the radial adjustment member along the radial direction of the drum, whereinthe follower is arranged on the portion of the adjustment shaft outside the drum to follow the adjustment shaft to move.
3. The adjustable-magnetic-field magnetic separator according to claim 2, whereinthe radial magnetic field adjustment assembly further comprises a connecting member, the connecting member is arranged inside the drum, the connecting member is capableof being fixed relative to the adjustment shaft, and the connecting member is thereon arranged with a sliding hole;the radial adjustment member is a magnetic pole slider, and arranged along the sliding hole in a sliding manner; andthe conversion structure comprises a trajectory disk, a spiral groove provided on the trajectory disk, and a sliding tooth provided on the magnetic pole slider; the trajectory disk is fixedly connected to the adjustment shaft; and the sliding tooth moves along the spiral groove.
4. The adjustable-magnetic-field magnetic separator according to claim 2, whereinthe drum device is capable of adjusting a magnetic field shape;the magnetic system module comprises multiple magnetic pole units arranged sequentially along a circumferential direction of the drum, wherein each magnetic pole unit comprises multiple magnetic pole modules arranged sequentially along an axial direction of the drum; andmultiple radial adjustment members are provided, and each magnetic pole unit is detachably connected to one corresponding radial adjustment member of the multiple radial adjustment members, and the magnetic field shape is adjusted by connecting different magnetic pole units to the radial adjustment members.
5. The adjustable-magnetic-field magnetic separator according to claim 4, whereinthe follower comprises a rotation block, and the rotation block is fixed on the portion of the adjustment shaft outside the drum; and / or,the follower comprises a slider, wherein the slider is arranged to the portion of the adjustment shaft outside the drum through a threaded connection; and the magnetic field display device further comprises a mounting base, wherein the mounting base is fixedly arranged, the mounting base is arranged with a sliding limit structure, and the slider is capable of sliding along an axial direction of the adjustment shaft under a limit by the sliding limit structure.
6. The adjustable-magnetic-field magnetic separator according to claim 5, whereinthe display module comprises a pointer and a magnetic field data nameplate; the magnetic field data are marked on the magnetic field data nameplate; andthe pointer is fixedly connected to the follower, and the pointer is capable of following a motion of the follower and pointing to current magnetic field data of the magnetic field data nameplate corresponding to a current position of the follower.
7. The adjustable-magnetic-field magnetic separator according to claim 5, wherein the display module comprises:a position measurement element, configured for measuring a current position of the follower;a data processor, wherein the position measurement element communicates with the data processor, and the magnetic field data are stored in the data processor; anda display, wherein the data processor is capable of processing position information data of the follower to obtain current magnetic field data and transmitting the current magnetic field data to the display, the display comprises a screen, and the screen is capable of displaying the current magnetic field data.
8. The adjustable-magnetic-field magnetic separator according to claim 7, wherein the magnetic field data further comprise magnetic field shapes, magnetic force parameters and magnetic force parameter curves of the multiple magnetic pole units; and the screen comprises multiple display regions to display at least the magnetic field intensity, the magnetic field shapes, the magnetic force parameter of each of the multiple magnetic pole units, and the magnetic force parameter curve of each of the multiple magnetic pole units.
9. The adjustable-magnetic-field magnetic separator according to claim 7, wherein the adjustable-magnetic-field magnetic separator further comprises: a separation space adjustment device and an immersion depth displacement sensor, wherein the separation space adjustment device is connected to the drum device; the immersion depth displacement sensor is capable of detecting a displacement of a drum bottom of the drum and transmitting the displacement to the data processor, and the data processor obtains positional information of the drum bottom of the drum based on the displacement and transmits the positional information to the display;and / or,the drum device further comprises:a magnetic declination adjustment assembly, comprising a connecting shaft connected to the magnetic system module, wherein a portion of the connecting shaft is located outside the drum and another portion is located inside the drum, the connecting shaft comprises a connection hole extending along an axial direction of the connecting shaft, and at least a portion of the adjustment shaft passes through the connecting shaft;a tank; anda position display plate, connected to the portion of the connecting shaft outside the drum, wherein the position display plate is configured to display a bottom contour of the drum, a position of the magnetic system module, and a separation space size formed between a current position of the drum and a bottom of the tank; andthe 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, whereinthe adjustable-magnetic-field magnetic separator comprises:a tank, wherein the tank is a co-current and counter-current dual-action tank with dualaction separation functionality for co-current and counter-current operations; andthe magnetic pole sliders connect to different magnetic pole units, and the multiple magnetic pole units form the magnetic system module symmetrically arranged about a central axis; and utilizing the tank with the dual-action separation functionality for cocurrent and counter-current operations and adjusting a magnetic declination of the magnetic system module, co-current and counter-current bidirectional operations are achieved.
Citation Information
Patent Citations
Magnetic field real-time adjusting system and method based on production process monitoring
CN116328941A