A magnetic separator for mineral sands

Abstract

This utility model relates to the field of magnetic separator technology, and in particular to a mineral sand magnetic separator, comprising a frame, on which multiple conveying units are inclinedly arranged, the height of the multiple conveying units decreasing progressively, a protective cover being provided on the outside of the frame, and a discharge device and a waste discharge device being provided on the frame. Each conveying unit includes a drive roller and a driven roller, and a conveyor belt is fitted on the drive roller and the driven roller. An electromagnet cooperating with the conveyor belt is provided on the frame. The driven roller of the conveying unit is poweredly connected to the drive roller of the next conveying unit. By setting multiple conveying units and electromagnets to cooperate, the mineral sand is screened multiple times, effectively reducing the content of magnetic mineral sand in non-magnetic mineral sand and improving the purity of non-magnetic mineral sand. When it is necessary to remove the electromagnet for cleaning and maintenance, the limit plate and electromagnet can be removed by unscrewing the hand nut, which is convenient for cleaning.

Description

Technical Field

[0001] This utility model relates to the field of magnetic separator technology, and in particular to a mineral sand magnetic separator. Background Technology

[0002] Magnetic separation is an indispensable and important step in ore processing, widely used for the separation and extraction of mineral resources. Ore usually contains a variety of mineral components, some of which are magnetic, such as iron ore, while others are non-magnetic minerals. Magnetic separation utilizes the magnetic differences between these minerals. By applying an external magnetic field, minerals with different properties are effectively separated. This process can not only improve the grade and recovery rate of ore, but also reduce the cost of subsequent processing.

[0003] Existing magnetic separators for mineral sands typically incorporate magnetic structures within the conveyor belt for screening. The conveyor belt is also inclined to separate magnetic from non-magnetic mineral sands. For example, Chinese Patent Publication No. CN220919556U discloses a "Permanent Magnet Magnetic Separator for Mineral Sands," in which the feed pipes are arranged perpendicular to the direction of the conveyor belt's movement. This ensures the mineral sands are evenly distributed within the feed pipes. The arrangement of multiple feed pipes perpendicular to the direction of the conveyor belt further facilitates uniform distribution of the mineral sands, promoting separation and enriching monazite, thus improving the efficiency of magnetic separation.

[0004] However, in actual use, when the conveyor belt and magnetic structure screen the ore, some magnetic ore will move due to the pushing of non-magnetic ore, resulting in the screening of non-magnetic ore containing some magnetic ore. Furthermore, as the usage time increases, dust and ore easily adhere to the surface of the magnetic structure, reducing the adsorption effect of the magnetic structure on the ore on the conveyor belt, thus affecting the screening of ore. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as the presence of some magnetic mineral sand in the non-magnetic mineral sand being screened, and the easy adhesion of dust and mineral sand to the surface of the magnetic structure over time, which reduces the adsorption effect on the mineral sand. Therefore, this invention proposes a mineral sand magnetic separator.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design a magnetic separator for mineral sand, including a frame, on which multiple conveying units are inclinedly arranged, the height of the multiple conveying units decreasing, a protective cover is provided on the outside of the frame, a discharge device and a waste discharge device are provided on the frame, and a through groove is provided on the protective cover to cooperate with the discharge device and the waste discharge device.

[0008] The conveying unit includes an active roller and a passive roller, and a conveyor belt is fitted on the active roller and the passive roller. An electromagnet that cooperates with the conveyor belt is installed on the frame. A motor that is poweredly connected to the active roller of the conveying unit is installed on the protective cover. The passive roller of the conveying unit is poweredly connected to the active roller of the next conveying unit.

[0009] Furthermore, a maintenance slot is provided on one side of the protective cover, a baffle is rotatably installed on the maintenance slot, and a bracket that cooperates with the electromagnet is provided on the frame.

[0010] Furthermore, a connecting rod is fixedly provided on one side of the electromagnet, and a limiting plate is fixedly provided on the connecting rod, with the limiting plate in contact with the frame.

[0011] Furthermore, a positioning post is fixedly installed on the frame, the positioning post is movably inserted into the limiting plate, and a hand-tightening nut is threaded to one end of the positioning post.

[0012] Furthermore, both the active roller and the passive roller are equipped with sprockets, and the sprocket of the passive roller is connected to the sprocket on the active roller of the lower conveying unit via a chain.

[0013] Furthermore, the inner wall of the protective cover is fixedly provided with guide plates that cooperate with the conveying unit, and the protective cover is fixedly provided with partitions that cooperate with the discharge device and the waste discharge device.

[0014] The ore magnetic separator proposed in this utility model has the following advantages:

[0015] In this invention, by setting up multiple conveying units in conjunction with electromagnets, the ore sand is screened multiple times, which effectively reduces the content of magnetic ore sand in non-magnetic ore sand and improves the purity of non-magnetic ore sand.

[0016] Secondly, in this utility model, a limiting plate and a connecting rod are set to connect with the electromagnet, and the electromagnet is fixed by connecting the limiting plate to the frame. When it is necessary to remove the electromagnet for cleaning and maintenance, the limiting plate and the electromagnet can be removed by unscrewing the hand nut, which is convenient for cleaning. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a mineral sand magnetic separator proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the sprocket structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the electromagnet of this utility model;

[0020] Figure 4This is an enlarged structural diagram of area A of this utility model.

[0021] In the diagram: 1. Frame; 2. Conveying unit; 21. Driven roller; 22. Driven roller; 23. Conveyor belt; 24. Electromagnet; 241. Support; 242. Connecting rod; 243. Limiting plate; 244. Hand-tightening nut; 25. Motor; 26. Sprocket; 3. Protective cover; 31. Guide plate; 32. Partition; 4. Discharge device; 5. Waste discharge device; 6. Inspection trough. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figure 1-4 A magnetic separator for mineral sand includes a frame 1, on which multiple conveying units 2 are inclinedly arranged, the height of the multiple conveying units 2 decreasing in that order, a protective cover 3 is provided on the outside of the frame 1, and a discharge device 4 and a waste discharge device 5 are provided on the frame 1. The protective cover 3 is provided with a through groove that cooperates with the discharge device 4 and the waste discharge device 5.

[0024] The conveying unit 2 includes an active roller 21 and a passive roller 22. A conveyor belt 23 is fitted on the active roller 21 and the passive roller 22. An electromagnet 24 that cooperates with the conveyor belt 23 is installed on the frame 1. An external controller can control the magnitude of the magnetic force of the electromagnet 24. A motor 25 that is poweredly connected to the active roller 21 of the first conveying unit 2 is installed on the protective cover 3. The passive roller 22 of the previous conveying unit 2 and the active roller 21 of the next conveying unit 2 are poweredly connected in sequence.

[0025] In this invention, multiple conveying units 2 cooperate with electromagnets 24 to perform preliminary screening of mineral sand through the first conveying unit 2, and then the remaining conveying units 2 sequentially screen the non-magnetic mineral sand, effectively reducing the content of magnetic mineral sand in the non-magnetic mineral sand, improving the purity of the non-magnetic mineral sand, and also increasing the yield of magnetic mineral sand.

[0026] Furthermore, in this embodiment, a maintenance slot 6 is provided on one side of the protective cover 3, and a baffle is rotatably provided on the maintenance slot 6. A bracket 241 that cooperates with the electromagnet 24 is provided on the frame 1. The electromagnet 24 is supported by the bracket 241. The maintenance slot 6 facilitates the maintenance and installation of the electromagnet.

[0027] Furthermore, in this embodiment, a connecting rod 242 is fixedly provided on one side of the electromagnet 24, and a limiting plate 243 is fixedly provided on the connecting rod 242. The limiting plate 243 contacts the frame 1 and is connected to the electromagnet 24 through the limiting plate 243 and the connecting rod 242. The limiting plate 243 cooperates with the frame 1 to position and fix the electromagnet 24.

[0028] It should be noted that in this embodiment, a positioning post is fixedly installed on the frame 1. The positioning post is movably inserted into the limiting plate 243. One end of the positioning post is threaded with a hand-tightening nut 244. The limiting plate 243 is fixed by setting the hand-tightening nut 244, thereby fixing the position of the electromagnet 24. When removing the electromagnet 24, the hand-tightening nut 244 can be unscrewed.

[0029] Furthermore, in this embodiment, both the active roller 21 and the passive roller 22 are equipped with sprockets 26. The sprockets 26 of the passive roller 22 are connected to the sprockets 26 on the active roller 21 of the lower conveying unit 2 via a chain. When the active roller 21 drives the conveyor belt 23 to rotate, it drives the passive roller 22 to rotate. When the passive roller 22 rotates, the sprockets 26 rotate, and the active roller 21 of the other conveying unit 2 is driven to rotate via a chain.

[0030] More specifically, in this embodiment, the inner wall of the protective cover 3 is fixedly provided with a guide plate 31 that cooperates with the conveying unit 2, and the protective cover 3 is fixedly provided with a partition plate 32 that cooperates with the discharge device 4 and the waste discharge device 5. The guide plate 31 is provided to facilitate the conveying of mineral sand, and the partition plate 32 is provided to prevent magnetic mineral sand from mixing with non-magnetic mineral sand.

[0031] Working method: During operation, the motor 25 drives the active roller 21 of the first conveying unit 2 to rotate. The active roller 21 drives the conveyor belt 23 and the passive roller 22 to rotate. The chain drives the active roller 21 of the next conveying unit 2 to rotate, thereby realizing one motor 25 driving multiple conveying units 2. The ore sand is first screened by the first conveying unit 2, and then the remaining conveying units 2 sequentially screen the screened non-magnetic ore sand, effectively reducing the content of magnetic ore sand in non-magnetic ore sand.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A magnetic separator for mineral sands, comprising a frame (1), characterized in that, Multiple conveying units (2) are inclinedly arranged on the frame (1), and the height of the multiple conveying units (2) decreases. A protective cover (3) is provided on the outside of the frame (1). A discharge device (4) and a waste discharge device (5) are provided on the frame (1). A through groove is provided on the protective cover (3) to cooperate with the discharge device (4) and the waste discharge device (5). The conveying unit (2) includes an active roller (21) and a passive roller (22). A conveyor belt (23) is fitted on the active roller (21) and the passive roller (22). An electromagnet (24) that cooperates with the conveyor belt (23) is provided on the frame (1). A motor (25) that is poweredly connected to the active roller (21) of the conveying unit (2) is provided on the protective cover (3). The passive roller (22) of the conveying unit (2) is poweredly connected to the active roller (21) of the next conveying unit (2). The protective cover (3) has a maintenance slot (6) on one side, and a baffle is rotatably installed on the maintenance slot (6). The frame (1) is provided with a bracket (241) that cooperates with the electromagnet (24). A connecting rod (242) is fixedly provided on one side of the electromagnet (24), and a limiting plate (243) is fixedly provided on the connecting rod (242). The limiting plate (243) is in contact with the frame (1). A positioning column is fixedly installed on the frame (1). The positioning column is movably inserted into the limiting plate (243). One end of the positioning column is threadedly connected to a hand-tightening nut (244).

2. The ore magnetic separator according to claim 1, characterized in that: Both the active roller (21) and the passive roller (22) are equipped with sprockets (26). The sprockets (26) of the passive roller (22) are connected to the sprockets (26) on the active roller (21) of the lower conveying unit (2) via a chain.

3. The ore magnetic separator according to claim 1, characterized in that: The inner wall of the protective cover (3) is fixedly provided with a guide plate (31) that cooperates with the conveying unit (2), and the protective cover (3) is fixedly provided with a partition plate (32) that cooperates with the discharge device (4) and the waste discharge device (5).

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