Magnetic impurity removal device for crushed ore

Abstract

The magnetic impurity removal device comprises a discharging opening formed in the top of a box body, a spiral conveyor is vertically installed in the discharging opening, and a channel used for guiding materials is formed in the upper end of the side wall of the discharging opening; the magnetic separation impurity removal mechanism is arranged in the box body and is positioned below the discharging opening; the inner diameter of the bottom of the discharging opening is larger than that of the top of the discharging opening, and mineral aggregate moves downwards under the action of gravity and the action of thrust and centrifugal force of the spiral conveyor. Due to the combined action of multiple forces, the mineral aggregate is smoother in the downward movement process, so that material blockage is not easy to occur, in addition, the mineral aggregate can be kept in a stable flowing state through the continuous rotating movement, and the risk of material blockage is further reduced; the inner diameter of the bottom of the feed opening is larger than the inner diameter of the top of the feed opening, so that the bottom of the feed opening expands outwards, the design that the feed opening is narrow in top and wide in bottom facilitates gradual diffusion of mineral aggregate in the flowing process, and the risk of accumulation and blockage of the mineral aggregate in a narrow space is reduced.

Description

Technical Field

[0001] This application relates to the field of magnetic separation equipment technology, and in particular to a magnetic impurity removal device for crushed ore. Background Technology

[0002] Magnetic separators are used to remove iron powder and other particles from recycled powders. Because magnetic particles and non-magnetic particles experience different magnetic forces in a magnetic field, magnetic particles are attracted to the surface of the drum by magnetic force and are carried to the magnetic field area to be unloaded. Non-magnetic and weakly magnetic particles are thrown off along different trajectories due to the different magnetic forces they experience.

[0003] Chinese patent CN221208439U discloses an ore magnetic separator, including a support frame. A first magnetic separation component is fixedly connected to the top of the support frame, and a second magnetic separation component is installed on one side of the support frame. A feeding rack is installed between the first and second magnetic separation components. This invention utilizes the first magnetic separation component to allow vermiculite to enter the feed inlet of the first magnetic separation component and, under the action of the guide plate, enter the center of the casing of the first magnetic separation component. A magnetic drum made with a weak magnetic source performs magnetic separation, removing iron-containing substances from the vermiculite ore and improving working efficiency. The second magnetic separation component allows tailings discharged from the tailings outlet of the first magnetic separation component to enter the center of the feed inlet of the second magnetic separation component via the feeding rack. Trace amounts of iron-containing substances in the center of the tailings are then magnetically separated using a magnetic drum made with a strong magnetic source. This results in high magnetic separation efficiency, complete separation, and good performance.

[0004] However, during the process of conceiving and implementing the above application, the inventors discovered that in actual use, the funnel-shaped feed inlet is prone to clogging when feeding materials with high viscosity or poor flowability. Utility Model Content

[0005] To solve or partially solve the problems existing in related technologies, this application provides a magnetic impurity removal device for crushed ore.

[0006] To achieve the above objectives, this application employs the following technical solution:

[0007] A magnetic impurity removal device for crushing ore includes a housing, and the device further includes:

[0008] The discharge port is located at the top of the box. A screw conveyor is vertically installed inside the discharge port. A channel for guiding materials is opened at the upper end of the side wall of the discharge port.

[0009] A magnetic separation and impurity removal mechanism is installed inside the housing and located below the discharge port;

[0010] The bottom inner diameter of the discharging opening is larger than the top inner diameter, and the mineral material moves downward under the action of gravity and the thrust and centrifugal force of the screw conveyor.

[0011] Optionally, the magnetic impurity removal mechanism comprises:

[0012] The first guide plate is obliquely arranged below the discharging opening, and the bottom of the first guide plate is provided with a first magnetic cylinder.

[0013] Optionally, the first pulley is connected with the speed reducer through a first transmission belt, and the second pulley is connected with the second magnetic cylinder through a second transmission belt.

[0014] The first magnetic cylinder is made of a weak magnetic source, and the second magnetic cylinder is made of a strong magnetic source.

[0015] Optionally, the lower side of the second magnetic cylinder is provided with a concentrate discharge groove, and one side wall of the concentrate discharge groove extends upward to the lower end surface of the first guide plate to form a material blocking plate.

[0016] Optionally, the material blocking plate is obliquely provided with a second guide plate, and the end of the second guide plate away from the material blocking plate is located between the first magnetic cylinder and the second magnetic cylinder.

[0017] Optionally, the other radial side of the first magnetic cylinder is provided with a first scraper, the upper end of the first scraper is in sliding contact with the surface of the first magnetic cylinder, and the lower side of the first scraper is provided with a waste ore discharge groove.

[0018] Optionally, the radial side of the second magnetic cylinder is provided with a second scraper, the upper end of the second scraper is in sliding contact with the surface of the second magnetic cylinder, and the lower end of the second scraper is connected with one side wall of the waste ore discharge groove.

[0019] The mineral material moves downward under the action of gravity and the thrust and centrifugal force of the screw conveyor. Due to the combined action of multiple forces, the mineral material moves more smoothly in the process of moving downward, so that the material is not easy to be blocked, in addition, the continuous rotary motion enables the mineral material to maintain a stable flow state, further reducing the risk of blocking.

[0020] The bottom inner diameter of the discharging opening is larger than the top inner diameter, so that the bottom of the discharging opening is expanded, and the design of the narrow top and wide bottom of the discharging opening helps the mineral material to gradually diffuse in the flow process, reducing the risk of accumulation and blocking of the mineral material in the narrow space. The wider bottom design reduces the contact area of the mineral material with the side wall of the discharging opening, thereby reducing the possibility of the mineral material adhering to the container wall, further reducing the risk of blocking.

[0021] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application, as claimed. BRIEF DESCRIPTION OF DRAWINGS

[0022] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which like reference characters refer to like parts throughout and in which:

[0023] Figure 1 is a structural schematic diagram of a broken ore magnetic impurity removal device according to an embodiment of the present application;

[0024] Figure 2 is a structural schematic diagram of a broken ore magnetic impurity removal device according to an embodiment of the present application;

[0025] Figure 3 is a structural schematic diagram of a broken ore magnetic impurity removal device according to an embodiment of the present application.

[0026] Reference signs: 1 box, 2 discharge port, 3 screw conveyor, 4 magnetic separation impurity removal mechanism, 5 first guide plate, 6 first magnetic cylinder, 7 first pulley, 8 second pulley, 9 speed reducer motor, 10 second magnetic cylinder, 11 first transmission belt, 12 second transmission belt, 13 concentrate discharge groove, 14 material blocking plate, 15 second guide plate, 16 first scraper, 17 impure ore discharge groove, 18 second scraper. DETAILED DESCRIPTION

[0027] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0028] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0029] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention as the specific circumstances dictate.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0032] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

[0033] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

[0034] To make the objectives, technical solutions, and beneficial effects of this application clearer, the preferred embodiments of this application will be described in detail below with reference to the accompanying drawings, so as to facilitate understanding by those skilled in the art.

[0035] Embodiment One

[0036] Referring to Figure 1 A magnetic impurity removal device for crushed ore includes a box body 1, and further includes:

[0037] A discharging port 2 is arranged at the top of the box body 1, and a vertical screw conveyor 3 is arranged in the discharging port 2, and a channel for guiding the ore is arranged at the upper end of the side wall of the discharging port 2.

[0038] A magnetic impurity removal mechanism 4 is arranged in the box body 1 and below the discharging port 2.

[0039] The inner diameter of the bottom of the discharging port 2 is greater than the inner diameter of the top of the discharging port 2, and the ore is moved downward under the action of gravity and the thrust and centrifugal force of the screw conveyor 3.

[0040] Specifically, the conventional funnel conveying mainly relies on gravity and the natural flow of the ore to convey, and the ore with large viscosity or poor flowability is prone to be blocked. The screw conveyor 3 is composed of a screw shaft and a screw blade, the screw shaft is driven by a motor, and the screw blade rotates synchronously with the screw shaft. When the screw shaft rotates downward, the ore is moved downward along the direction of the screw shaft under the action of gravity and the thrust and centrifugal force of the screw blade. Due to the combined action of multiple forces, the ore can move more smoothly in the process of moving downward, so that the ore is not prone to be blocked. In addition, the continuous rotary motion enables the ore to maintain a stable flow state, further reducing the risk of blocking.

[0041] In the present application, the inner diameter of the bottom of the discharging port 2 is greater than the inner diameter of the top of the discharging port 2, so that the bottom of the discharging port 2 is expanded outward. The design of the discharging port 2 being narrow at the top and wide at the bottom helps the ore to gradually diffuse in the flow process, reducing the risk of accumulation and blocking of the ore in the narrow space. The wider bottom design reduces the contact area between the ore and the side wall of the discharging port 2, thereby reducing the possibility of the ore adhering to the container wall, further reducing the risk of blocking.

[0042] The magnetic impurity removal mechanism 4 separates the magnetic particles in the ore from the non-magnetic particles by the action of the magnetic field, so as to remove the impure ore with magnetism and retain the non-magnetic concentrate with high purity.

[0043] Embodiment Two

[0044] Referring to Figure 2 and Figure 3 Based on Embodiment One, optionally, the magnetic impurity removal mechanism 4 includes:

[0045] The first guide plate 5 is obliquely arranged below the discharging port 2, the bottom of the first guide plate 5 is provided with a first magnetic cylinder 6, the axial one end of the first magnetic cylinder 6 is coaxially connected with a first pulley 7 and a second pulley 8, the radial one side of the first magnetic cylinder 6 is provided with a speed reducer motor 9, and the lower side of the first magnetic cylinder 6 is provided with a second magnetic cylinder 10.

[0046] Specifically, the upper end of the first guide plate 5 is fixedly connected with the bottom of the side wall of the discharging port 2, and the axial two sides of the first guide plate 5 are connected with the inner side walls of the box body 1; the both ends of the rotating shaft of the first magnetic cylinder 6 are rotatably installed on the two side walls of the box body 1, one end of the rotating shaft of the first magnetic cylinder 6 extends out of the box body 1 and is coaxially connected with the first pulley 7 and the second pulley 8 through a spline or a key, in order to facilitate disassembly and assembly, the first pulley 7 and the second pulley 8 are arranged on the outer side of the box body 1, and the first pulley 7 drives the rotating shaft of the first magnetic cylinder 6 to rotate, so that the first magnetic cylinder 6 and the second pulley 8 rotate synchronously.

[0047] The end of the first guide plate 5 away from the discharging port 2 is located above one side of the first magnetic cylinder 6, the ore material at the discharging port 2 can be obliquely guided into the first magnetic cylinder 6 through the first guide plate 5, so as to avoid waste caused by ore material scattering; at the same time, the obliquely arranged first guide plate 5 can slow down the falling speed of the ore material and reduce the impact of the ore material on the first magnetic cylinder 6.

[0048] The fixed end of the speed reducer motor 9 is fixed on the outer side wall of the box body 1; the both ends of the rotating shaft of the second magnetic cylinder 10 are rotatably installed on the two side walls of the box body 1.

[0049] Optionally, the first pulley 7 is connected with the speed reducer motor 9 through a first transmission belt 11, and the second pulley 8 is connected with the second magnetic cylinder 10 through a second transmission belt 12.

[0050] Among them, the first magnetic cylinder 6 is made of a weak magnetic source, and the second magnetic cylinder 10 is made of a strong magnetic source.

[0051] Specifically, the output end of the speed reducer motor 9 and the first pulley 7 realize power transmission through the first transmission belt 11, and the second pulley 8 and the second magnetic cylinder 10 realize power transmission through the second transmission belt 12, in this way, the first pulley 7 is driven to rotate by the speed reducer motor 9, so that the first pulley 7 drives the second pulley 8 and the first magnetic cylinder 6 located in the box body 1 to rotate synchronously, and the second pulley 8 drives the second magnetic cylinder 10 located in the box body 1 to rotate.

[0052] Since the first magnetic cylinder 6 has weak magnetism, the ore material entering the first magnetic cylinder 6 will be adsorbed on the surface of the first magnetic cylinder 6, so as to realize the primary magnetic separation of the ore material and prevent the ore from being accumulated due to too much ore; the ore material containing a small amount of iron substance after the primary screening is sent to the second magnetic cylinder 10 of the strong magnetic source for secondary magnetic separation. In this way, the ore material is completely separated through two times of magnetic separation, and the precision is improved.

[0053] Optionally, the second magnetic cylinder 10 is provided with a concentrate discharge groove 13 below, one side wall of the concentrate discharge groove 13 extends upward to the lower end surface of the first guide plate 5 to form a material blocking plate 14.

[0054] Specifically, the axial two sides of the concentrate discharge groove 13 are fixedly connected with the inner side wall of the box body 1, so that it is installed inside the box body 1; one side wall of the concentrate discharge groove 13 extends upward to the lower end surface of the first guide plate 5 to form a material blocking plate 14, and the mineral material after the first magnetic separation is blocked by the material blocking plate 14 and falls downward, so that the mineral material is prevented from scattering to other areas and causing waste.

[0055] The concentrate after the two magnetic separations is discharged through the discharge port at the bottom of the concentrate discharge groove 13.

[0056] Optionally, the material blocking plate 14 is provided with a second guide plate 15 inclined thereon, and the end of the second guide plate 15 away from the material blocking plate 14 is located between the first magnetic cylinder 6 and the second magnetic cylinder 10.

[0057] Specifically, the upper end of the second guide plate 15 is fixedly connected with the end surface of the material blocking plate 14, and the axial two sides of the second guide plate 15 are fixedly connected with the inner side wall of the box body 1, so that the second guide plate 15 is fixed between the first magnetic cylinder 6 and the second magnetic cylinder 10. The mineral material after the first screening is guided by the second guide plate 15 and sent to the second magnetic cylinder 10 for secondary magnetic separation. The second guide plate 15 functions the same as the first guide plate 5.

[0058] Optionally, the first magnetic cylinder 6 is provided with a first scraper 16 on the other radial side, the upper end of the first scraper 16 is in sliding contact with the surface of the first magnetic cylinder 6, and the lower side of the first scraper 16 is provided with a miscellaneous mineral discharge groove 17.

[0059] Specifically, the axial two sides of the first scraper 16 are fixedly connected with the inner side wall of the box body 1, so that it is installed inside the box body 1. Through the scraping action of the first scraper 16, the miscellaneous minerals adsorbed on the surface of the first magnetic cylinder 6 fall into the miscellaneous mineral discharge groove 17 along the inclined surface of the first scraper 16, and are discharged through the discharge port at the bottom of the miscellaneous mineral discharge groove 17.

[0060] Optionally, the second magnetic cylinder 10 is provided with a second scraper 18 on one radial side, the upper end of the second scraper 18 is in sliding contact with the surface of the second magnetic cylinder 10, and the lower end of the second scraper 18 is connected with one side wall of the miscellaneous mineral discharge groove 17.

[0061] Specifically, the axial two sides of the second scraper 18 are fixedly connected with the inner side wall of the box 1, so that the second scraper 18 is installed inside the box 1 and located below the first scraper 16. Through the scraping action of the second scraper 18, the mixed ore adsorbed on the surface of the second magnetic cylinder 10 falls into the mixed ore discharge groove 17 along the inclined surface of the second scraper 18. The second scraper 18 is spaced apart from the first scraper 16 to facilitate the mixed ore to enter the mixed ore discharge groove 17 through the spacing.

[0062] In the embodiment, the mixed ore is subjected to two times of magnetic separation operation through the cooperation of the components of the magnetic separation and impurity removal mechanism 4, so as to realize the impurity removal of the ore.

[0063] It should be noted that the structure and / or installation method not described in detail in the present application can be known by those skilled in the art in combination with common knowledge and / or prior art, and is not the focus of the disclosure in the present application, and will not be described further.

[0064] Finally, it should be pointed out that the above preferred embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present application; the sizes of the drawings are not related to the specific objects, and the sizes of the objects can be changed arbitrarily.

Claims

1. A magnetic tramp-iron removal device for crushed ore comprising a housing (1), characterized in that, The ore crushing magnetic impurity removal device further comprises: A discharge port (2) is arranged at the top of the box body (1), a vertical screw conveyor (3) is arranged in the discharge port (2), and a channel for guiding the material is arranged on the upper end of the side wall of the discharge port (2); A magnetic impurity removal mechanism (4) is arranged in the box body (1) and below the discharge port (2); The bottom inner diameter of the discharge port (2) is greater than the top inner diameter, and the ore material moves downward under the action of gravity, the thrust of the screw conveyor (3) and the centrifugal force.

2. The magnetic tramp-iron removal device of claim 1, wherein, The magnetic impurity removal mechanism (4) comprises: A first guide plate (5) is arranged below the discharge port (2), the bottom of the first guide plate (5) is provided with a first magnetic cylinder (6), the first magnetic cylinder (6) is coaxially connected with a first pulley (7) and a second pulley (8) at one end in the axial direction, the first magnetic cylinder (6) is provided with a speed reducer (9) at one side in the radial direction, and the first magnetic cylinder (6) is provided with a second magnetic cylinder (10) below.

3. The magnetic tramp-iron removal device of claim 2, wherein, The first pulley (7) is connected with the speed reducer (9) through a first transmission belt (11), and the second pulley (8) is connected with the second magnetic cylinder (10) through a second transmission belt (12). The first magnetic cylinder (6) is made of a weak magnetic source, and the second magnetic cylinder (10) is made of a strong magnetic source.

4. The magnetic tramp-iron removal device of claim 3, wherein the magnet is a permanent magnet. A concentrate discharge groove (13) is arranged below the second magnetic cylinder (10), one side wall of the concentrate discharge groove (13) extends upward to the lower end surface of the first guide plate (5) to form a material blocking plate (14).

5. The magnetic tramp-iron removal device of claim 4, wherein the magnet is a permanent magnet. A second guide plate (15) is arranged on the material blocking plate (14) in an inclined manner, and one end of the second guide plate (15) away from the material blocking plate (14) is located between the first magnetic cylinder (6) and the second magnetic cylinder (10).

6. The magnetic tramp-iron removal device of claim 2, wherein, The first magnetic cylinder (6) is provided with a first scraper (16) at the other side in the radial direction, the upper end of the first scraper (16) is in sliding contact with the surface of the first magnetic cylinder (6), and the first scraper (16) is provided with a waste ore discharge groove (17) below.

7. The magnetic tramp-iron removal device of claim 6, wherein the magnet is a permanent magnet. The second magnetic cylinder (10) is provided with a second scraper (18) at one side in the radial direction, the upper end of the second scraper (18) is in sliding contact with the surface of the second magnetic cylinder (10), and the lower end of the second scraper (18) is connected with one side wall of the waste ore discharge groove (17).

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