High-efficiency environment-friendly wet-type permanent magnet drum magnetic separator for mining industry

Abstract

The invention discloses an efficient and environment-friendly wet type permanent magnet drum type magnetic separator for mining industry, and relates to the field of magnetic separators. An efficient environment-friendly wet type permanent magnet drum magnetic separator for the mining industry comprises a rack, a magnetic separation box is fixedly mounted on the rack, a mounting shaft is mounted on the rack through a support, a magnetic separation drum is rotationally connected to the mounting shaft, and the magnetic separation drum is located in a magnetic separation groove of the magnetic separation box; according to the magnetic separation device, ferromagnetic minerals can be rapidly and effectively separated from ore pulp, the magnetic separation efficiency is greatly improved, impurity minerals mixed in the ferromagnetic minerals can be effectively removed by knocking and vibrating the magnetic separation roller, the impurity content in the magnetic separation minerals is reduced, the purity of the ferromagnetic minerals is improved, subsequent processing is not needed, and the magnetic separation efficiency is improved. And then the magnetic separated minerals are selected, so that the time and the cost are saved, the efficiency is greatly improved, and meanwhile, the quality of a final product is also improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of magnetic separators, and specifically relates to an efficient and environmentally friendly wet permanent magnet drum type magnetic separator for the mining industry. Background Art

[0002] In mining production, magnetic separation is a commonly used and important ore dressing method. Especially for ore materials containing strongly magnetic minerals, magnetic separation can effectively separate the strongly magnetic minerals from other minerals to improve the purity and quality of the minerals and meet the requirements of subsequent industrial production.

[0003] However, in the magnetic separation process of the existing wet permanent magnet drum type magnetic separators, when strongly magnetic minerals adhere to the surface of the magnetic separation drum, some other minerals with lower magnetism or non-magnetism are often mixed. And the existing magnetic separators lack effective means to remove the impurity minerals, resulting in a high impurity content in the strongly magnetic minerals separated by magnetic separation, and subsequent re-concentration is required. This not only increases the production cost but also reduces the production efficiency. In view of this, the present invention is specifically proposed. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an efficient and environmentally friendly wet permanent magnet drum type magnetic separator for the mining industry that can overcome or at least partially solve the above problems.

[0005] To solve the above technical problem, the basic concept of the technical solution adopted by the present invention is as follows: An efficient and environmentally friendly wet permanent magnet drum type magnetic separator for the mining industry, including a frame, a magnetic separation box is fixedly installed on the frame, a mounting shaft is installed on the frame through a support, a magnetic separation drum is rotatably connected to the mounting shaft, the magnetic separation drum is located in the magnetic separation tank of the magnetic separation box, a permanent magnet is installed in the magnetic separation drum, the permanent magnet is installed on the mounting shaft through a mounting frame, a driving mechanism for driving the magnetic separation drum to rotate is installed at one end of the frame, and further includes: brackets symmetrically and fixedly connected to both ends of the frame; support rods symmetrically and fixedly connected to the brackets; a lifting plate slidably connected to two support rods on the same side; a rotating rod rotatably connected between the two lifting plates; transmission discs equidistantly and fixedly connected to the rotating rod and in rolling contact with the magnetic separation drum; two groups of knocking rods symmetrically installed on the rotating rod; wherein, when the knocking rods contact the magnetic separation drum, the transmission discs move upward and separate from the magnetic separation drum.

[0006] Further, the driving mechanism includes a driving motor, a driving sprocket, and a transmission sprocket. The driving motor is fixedly installed on the frame. The driving sprocket is fixedly connected to the output end of the driving motor. The transmission sprocket is sleeved on the mounting shaft and fixedly connected to the magnetic separation drum. The driving sprocket and the transmission sprocket are connected by a chain. A protective cover is sleeved on the driving sprocket and the transmission sprocket, and the protective cover is fixedly connected to the frame.

[0007] Further, a feed trough and a magnetic ore discharge trough are respectively arranged on both sides of the magnetic separation tank at the magnetic separation trough. The magnetic ore discharge trough is communicated with the magnetic separation trough. An input slurry channel is arranged at the lower end inside the magnetic separation tank. The slurry inlet of the input slurry channel is communicated with the feed trough, and the slurry outlet of the input slurry channel is communicated with the magnetic separation trough. A tailings discharge channel is arranged between the magnetic separation trough and the input slurry channel in the magnetic separation tank. The feed inlet of the tailings discharge channel is communicated with the magnetic separation trough, and the discharge outlet of the tailings discharge channel extends downward out of the magnetic separation tank. A water spray pipe is installed at the notch of the magnetic ore discharge trough. A plurality of water spray heads facing the magnetic separation drum are equidistantly connected to the water spray pipe. The water flow sprayed by the water spray heads is tangentially distributed with the magnetic separation drum. A first guide plate is fixedly connected to the position of the notch of the magnetic ore discharge trough close to the magnetic separation drum. The permanent magnet is arranged on the side close to the magnetic ore discharge trough.

[0008] In order to facilitate the flexible adjustment of the position of the permanent magnet, further, one end of the mounting shaft away from the driving mechanism is fixedly connected with a fixed rod. The mounting shaft is rotatably connected to the support. The end of the fixed rod is rotatably connected with a limiting screw rod. A fixed piece is installed on one side of the frame close to the fixed rod. A through hole matching with the limiting screw rod is arranged on the fixed piece. Two nuts threadedly connected with the limiting screw rod are symmetrically and rotatably connected to the position of the fixed piece close to the through hole.

[0009] In order to facilitate enhancing the impact effect on the magnetic separation drum, furthermore, a top plate is fixedly connected between the upper ends of two support rods on the same side. A tension spring is sleeved on the support rod, and the two ends of the tension spring are respectively fixedly connected with the lifting plate and the top plate.

[0010] In order to facilitate further improving the separation effect between strongly magnetic minerals and other minerals, still further, an air spray pipe is fixedly connected to the lower end inside the input slurry channel. A plurality of air jet holes are equidistantly arranged on the air spray pipe. The direction of the air flow sprayed by the air spray pipe through the air jet holes is the same as the flowing direction of the ore slurry in the input slurry channel.

[0011] In order to facilitate the realization of the air jet function by using the mechanical movement of the magnetic separator itself, further, a cylinder is fixedly connected to the bracket. A piston rod with a piston is slidably connected in the cylinder. One end of the piston rod extending upward out of the cylinder is fixedly connected to the lifting plate. One-way valves are arranged in the air inlet and outlet of the cylinder. The air outlet of the cylinder is connected to the air inlet of the air jet pipe through an air delivery pipe.

[0012] In order to facilitate the quick disassembly, assembly and replacement of the knocking rod, further, the knocking rod and the rotating rod are detachably connected by threads.

[0013] In order to facilitate the inspection, maintenance or replacement of the permanent magnet, further, the mounting frame and the mounting shaft are detachably connected by a connecting piece.

[0014] In order to facilitate the recycling of water resources, reduce the consumption of water resources and lower the production cost, furthermore, a through port communicating with the magnetic ore discharge chute is opened on one side of the magnetic separation box close to the magnetic ore discharge chute. A second guide plate is fixedly connected obliquely downward in the magnetic ore discharge chute. The end of the second guide plate penetrates through the through port. Filter holes are arranged at the position of the second guide plate inside the magnetic ore discharge chute. A liquid discharge port is opened at the bottom of the magnetic ore discharge chute.

[0015] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: Through the cooperation of the magnetic field generated by the permanent magnet and the rotation of the magnetic separation drum, the present invention can quickly and effectively separate strong magnetic minerals from the pulp. The driving motor drives the sprocket and chain transmission system to ensure the stable rotation of the magnetic separation drum, making the whole magnetic separation process continuous and efficient, greatly improving the magnetic separation efficiency and being suitable for large-scale mining production.

[0016] The knocking vibration effect of the knocking rod and the transmission disc on the magnetic separation drum can effectively remove the impurity minerals mixed in the strong magnetic minerals, reduce the impurity content in the magnetic separation minerals, improve the purity of the strong magnetic minerals, and there is no need to further select the magnetic separation minerals in the subsequent processing, saving time and cost, greatly improving the efficiency, and at the same time improving the quality of the final product.

[0017] As a wet permanent magnet drum type magnetic separator, wet operation is adopted during the working process, reducing the generation of dust and being more environmentally friendly. The use of permanent magnets avoids the energy consumption problem of the existing electromagnetic magnets that need to continuously supply power to generate a magnetic field, reduces energy consumption, and meets the requirements of environmental protection and energy conservation.

[0018] The following further describes the specific embodiments of the present invention in detail with reference to the drawings. Description of the Drawings

[0019] In the drawings:

[0020] Figure 1 Structural schematic of the present invention Figure One ;

[0021] Figure 2 Structural schematic of the present invention Figure Two ;

[0022] Figure 3 Structural schematic of the present invention Figure Three ;

[0023] Figure 4 Structural schematic of removing the protective cover in the present invention;

[0024] Figure 5 Cross-sectional structural schematic of the present invention;

[0025] Figure 6 Structural schematic of the magnetic separation box in the present invention;

[0026] Figure 7 Cross-sectional structural schematic of the magnetic separation box in the present invention;

[0027] Figure 8 Expanded structural schematic between the rotating rod and the knocking rod in the present invention;

[0028] Figure 9 For the present invention Figure 2 Structural schematic of part A;

[0029] Figure 10 For the present invention Figure 4 Structural schematic of part B.

[0030] In the figure: 1, frame; 101, fixing piece; 2, magnetic separation box; 201, magnetic separation tank; 202, feeding tank; 203, magnetic ore discharge tank; 204, first guide plate; 205, second guide plate; 206, slurry conveying channel; 207, tailing discharge channel; 208, water spray pipe; 3, mounting shaft; 301, fixing rod; 302, limiting screw rod; 303, nut; 304, connecting piece; 305, mounting bracket; 306, permanent magnet; 4, magnetic separation drum; 5, driving motor; 501, driving sprocket; 502, transmission sprocket; 6, bracket; 601, support rod; 602, lifting plate; 603, rotating rod; 604, transmission disc; 605, knocking rod; 606, top plate; 607, tension spring; 608, air cylinder; 609, piston rod; 6010, air spray pipe; 6011, air conveying pipe. Detailed implementation manners

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments in conjunction with the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0032] Embodiment 1:

[0033] Referring to Figures 1 - 10 , a high-efficiency and environmentally friendly wet permanent magnet drum magnetic separator for the mining industry, comprising a frame 1, a magnetic separation box 2 fixedly installed on the frame 1, a mounting shaft 3 installed on the frame 1 through a support, a magnetic separation drum 4 rotatably connected to the mounting shaft 3, the magnetic separation drum 4 being located in the magnetic separation tank 201 of the magnetic separation box 2, a permanent magnet 306 installed in the magnetic separation drum 4, the permanent magnet 306 being installed on the mounting shaft 3 through a mounting frame 305, a driving mechanism for driving the rotation of the magnetic separation drum 4 installed at one end of the frame 1, further comprising: brackets 6 symmetrically and fixedly connected to both ends of the frame 1; support rods 601 symmetrically and fixedly connected to the brackets 6; a lifting plate 602 slidably connected to two support rods 601 on the same side; a rotating rod 603 rotatably connected between the two lifting plates 602; a transmission disc 604 equidistantly and fixedly connected to the rotating rod 603 and in rolling contact with the magnetic separation drum 4; two groups of knocking rods 605 symmetrically installed on the rotating rod 603; wherein, when the knocking rod 605 contacts the magnetic separation drum 4, the transmission disc 604 moves upward and separates from the magnetic separation drum 4. <

[0034] The driving mechanism includes a driving motor 5, a driving sprocket 501, and a transmission sprocket 502. The driving motor 5 is fixedly installed on the frame 1, the driving sprocket 501 is fixedly connected to the output end of the driving motor 5, the transmission sprocket 502 is sleeved on the mounting shaft 3 and fixedly connected to the magnetic separation drum 4, the driving sprocket 501 and the transmission sprocket 502 are connected by a chain, and a protective cover is sleeved on the driving sprocket 501 and the transmission sprocket 502, the protective cover being fixedly connected to the frame 1.

[0035] On both sides of the magnetic separation tank 201 on the magnetic separation box 2, a feed tank 202 and a magnetic ore discharge tank 203 are respectively provided. The magnetic ore discharge tank 203 is communicated with the magnetic separation tank 201. At the lower end inside the magnetic separation box 2, a slurry conveying channel 206 is provided. The slurry inlet of the slurry conveying channel 206 is communicated with the feed tank 202, and the slurry outlet of the slurry conveying channel 206 is communicated with the magnetic separation tank 201. A tailings discharge channel 207 is provided between the magnetic separation tank 201 and the slurry conveying channel 206 inside the magnetic separation box 2. The feed inlet of the tailings discharge channel 207 is communicated with the magnetic separation tank 201, and the discharge outlet of the tailings discharge channel 207 extends downward out of the magnetic separation box 2. A water spray pipe 208 is installed at the notch of the magnetic ore discharge tank 203. A plurality of water spray heads facing the magnetic separation drum 4 are equidistantly connected to the water spray pipe 208. The water flow sprayed by the water spray heads is tangentially distributed with the magnetic separation drum 4. A first guide plate 204 is fixedly connected to the position of the notch of the magnetic ore discharge tank 203 close to the magnetic separation drum 4. The permanent magnet 306 is arranged on one side close to the magnetic ore discharge tank 203.

[0036] When it is necessary to separate strongly magnetic minerals from the ore, the staff first prepare the ore into ore pulp because the ore pulp state is more conducive to the flow and separation of minerals during the magnetic separation process. The prepared ore pulp is transported to the feed tank 202 of the magnetic separation box 2. The design of the feed tank 202 facilitates the inflow of the ore pulp and provides a stable source of ore pulp for the subsequent magnetic separation process. After the ore pulp enters the feed tank 202, it will flow along the connected slurry conveying channel 206. The function of the slurry conveying channel 206 is to smoothly guide the ore pulp to the magnetic separation tank 201 and ensure that the ore pulp has a suitable flow rate and distribution when entering the magnetic separation area.

[0037] After the ore pulp flows into the magnetic separation tank 201, it enters the key area of magnetic separation. The magnetic separation drum 4 is installed in the magnetic separation tank 201. Inside the magnetic separation drum 4, a permanent magnet 306 is fixedly installed on the mounting shaft 3 through a mounting frame 305. The permanent magnet 306 generates a stable magnetic field. When the strongly magnetic minerals in the ore pulp pass through this magnetic field area, under the action of the magnetic force, the strongly magnetic minerals will quickly adhere to the surface of the magnetic separation drum 4, while those non-magnetic or weakly magnetic minerals are hardly affected by the magnetic force and will continue to flow with the ore pulp.

[0038] At this time, the staff start the driving motor 5. The driving motor 5 starts to work and drives the driving sprocket 501 fixedly connected to its output end to rotate. The driving sprocket 501 and the transmission sprocket 502 are connected by a chain. Therefore, the rotation of the driving sprocket 501 will be transmitted to the transmission sprocket 502 through the chain. The transmission sprocket 502 is sleeved on the mounting shaft 3 and fixedly connected to the magnetic separation drum 4, so as to drive the magnetic separation drum 4 to rotate around the mounting shaft 3. The rotation of the magnetic separation drum 4 makes the strongly magnetic minerals attached to its surface move with the drum and be conveyed towards the magnetic ore discharge tank 203.

[0039] When the magnetic separation drum 4 attached with strongly magnetic minerals rotates near the magnetic ore discharge chute 203, the water spray pipe 208 starts to work. The water spray nozzles on the water spray pipe 208 will spray water, and the water flow is tangentially distributed with the magnetic separation drum 4. This design enables the water flow to impact the strongly magnetic minerals on the surface of the magnetic separation drum 4 at an appropriate angle and force. Under the impact of the water flow, the strongly magnetic minerals are detached from the surface of the magnetic separation drum 4. The first deflector 204 is installed at the position of the magnetic ore discharge chute 203 near the magnetic separation drum 4. Its function is to guide the detached strongly magnetic minerals into the magnetic ore discharge chute 203 smoothly, completing the collection process of the strongly magnetic minerals.

[0040] During the magnetic separation process, those non-weakly magnetic minerals that are not adsorbed by the permanent magnet 306 will continue to flow with the pulp. They are discharged from the magnetic separation box 2 through the tailings discharge channel 207. The feed port of the tailings discharge channel 207 is connected to the magnetic separation tank 201, and the discharge port extends downward out of the magnetic separation box 2. Such a design ensures that the tailings can be discharged smoothly, avoiding interference with the magnetic separation process.

[0041] During the rotation of the magnetic separation drum 4, since the driving disk 604 is in rolling contact with the magnetic separation drum 4, the rotation of the magnetic separation drum 4 will drive the driving disk 604 to rotate. When the driving disk 604 rotates, it will drive the rotating rod 603 to rotate, and further cause the knocking rod 605 installed on the rotating rod 603 to rotate. When the knocking rod 605 contacts the magnetic separation drum 4, it will exert a knocking effect on the magnetic separation drum 4, causing the magnetic separation drum 4 to vibrate. This vibration is transmitted to the minerals attached to the wall of the magnetic separation drum 4. The strongly magnetic minerals can be firmly attached to the magnetic separation drum 4 due to the strong magnetic adsorption of the permanent magnet 306. However, other minerals with lower magnetism or no magnetism mixed in the strongly magnetic minerals will fall off from the magnetic separation drum 4 under the action of the vibration force. Moreover, when the knocking rod 605 contacts the magnetic separation drum 4, the magnetic separation drum 4 will lift the driving disk 604 through the knocking rod 605. When the supporting force of the knocking rod 605 on the rotating rod 603 disappears, the driving disk 604 will fall and impact the magnetic separation drum 4 under its own gravity, further enhancing the vibration effect.

[0042] This magnetic separator can quickly and effectively separate strongly magnetic minerals from the pulp through the cooperation of the magnetic field generated by the permanent magnet 306 and the rotation of the magnetic separation drum 4. The driving motor 5 drives the sprocket and chain transmission system to ensure the stable rotation of the magnetic separation drum 4, enabling the entire magnetic separation process to proceed continuously and efficiently, greatly improving the magnetic separation efficiency, and being suitable for large-scale mining production.

[0043] The knocking and vibrating action of the knocking rod 605 and the transmission disk 604 on the magnetic separation drum 4 can effectively remove the impurity minerals mixed in the strongly magnetic minerals, reduce the impurity content in the magnetic separation minerals, improve the purity of the strongly magnetic minerals, and there is no need to further concentrate the magnetically separated minerals in subsequent processing, saving time and cost, greatly improving the efficiency, and at the same time improving the quality of the final product.

[0044] As a wet permanent magnet drum type magnetic separator, wet operation is adopted during the working process, reducing the generation of dust and being more environmentally friendly. The use of the permanent magnet 306 avoids the energy consumption problem of the electromagnet in the prior art that requires continuous power supply to generate a magnetic field, reducing energy consumption and meeting the requirements of environmental protection and energy conservation.

[0045] Embodiment 2:

[0046] Refer to Figures 1 - 10 A highly efficient and environmentally friendly wet permanent magnet drum type magnetic separator for the mining industry is basically the same as Embodiment 1. Further, a fixing rod 301 is fixedly connected to one end of the mounting shaft 3 far from the driving mechanism. The mounting shaft 3 is rotatably connected to the support. The end of the fixing rod 301 is rotatably connected to a limiting screw rod 302. A fixing piece 101 is installed on one side of the frame 1 close to the fixing rod 301. A through hole matching the limiting screw rod 302 is provided on the fixing piece 101. Symmetrically rotatably connected to the position of the fixing piece 101 close to the through hole are nuts 303 threadedly connected to the limiting screw rod 302.

[0047] When the position of the permanent magnet 306 needs to be adjusted, the operator can achieve it by operating the limiting screw rod 302 rotatably connected to the end of the fixing rod 301. Since the limiting screw rod 302 passes through the through hole on the fixing piece 101 and is threadedly connected to the nuts 303 symmetrically rotatably connected to the fixing piece 101, by rotating the nuts 303, the limiting screw rod 302 can be moved along the axial direction, thereby driving the fixing rod 301 and the mounting shaft 3 connected thereto to generate a certain displacement. Because the permanent magnet 306 is installed on the mounting shaft 3, the displacement of the mounting shaft 3 will cause the position of the permanent magnet 306 to change. This design makes the position adjustment of the permanent magnet 306 very flexible. The operator can accurately adjust the permanent magnet 306 to the optimal working position according to the actual situation such as the properties of the ore and the requirements of magnetic separation.

[0048] The position of the permanent magnet 306 has a crucial impact on the magnetic separation effect. An appropriate position of the permanent magnet 306 can make the magnetic field more reasonably distributed in the magnetic separation tank 201, enabling the strongly magnetic minerals in the pulp to be more fully affected by the magnetic field, improving the adsorption rate of the strongly magnetic minerals. At the same time, it can also reduce the inclusion of non-magnetic or weakly magnetic minerals and improve the purity of the strongly magnetic minerals separated by magnetic separation. By flexibly adjusting the position of the permanent magnet 306, the magnetic separation process can be continuously optimized, keeping the magnetic separator in the best working state and improving the economic benefits of the entire magnetic separation operation.

[0049] Example 3:

[0050] Referring to Figures 1 - 10 , a high-efficiency and environmentally friendly wet permanent magnet drum type magnetic separator for the mining industry, which is basically the same as Example 2. Further, a top plate 606 is fixedly connected between the upper ends of two support rods 601 on the same side. A tension spring 607 is sleeved on the support rod 601, and the two ends of the tension spring 607 are respectively fixedly connected to the lifting plate 602 and the top plate 606.

[0051] When the knocking rod 605 contacts the magnetic separation drum 4 and the magnetic separation drum 4 lifts the transmission disk 604 through the knocking rod 605, the lifting plate 602 will slide upward along the support rod 601. At this time, the tension spring 607 is compressed and stores elastic potential energy. When the supporting force of the knocking rod 605 on the rotating rod 603 disappears, the tension spring 607 releases the elastic potential energy to assist the transmission disk 604 to quickly fall. In addition to the gravity of the transmission disk 604 itself, the additional power provided by the tension spring 607 makes the transmission disk 604 fall faster, enhancing the impact effect on the magnetic separation drum 4.

[0052] Example 4:

[0053] Referring to Figures 1 - 10 , a high-efficiency and environmentally friendly wet permanent magnet drum type magnetic separator for the mining industry, which is basically the same as Example 3. Further, a jet pipe 6010 is fixedly connected to the lower end inside the pulp conveying channel 206. A plurality of jet holes are equidistantly arranged on the jet pipe 6010, and the direction of the airflow ejected from the jet pipe 6010 through the jet holes is the same as the direction of the pulp flowing in the pulp conveying channel 206.

[0054] A cylinder 608 is fixedly connected to the bracket 6. A piston rod 609 with a piston is slidably connected inside the cylinder 608. One end of the piston rod 609 extending upward out of the cylinder 608 is fixedly connected to the lifting plate 602. Check valves are arranged at the air inlet and outlet of the cylinder 608, and the air outlet of the cylinder 608 is connected to the air inlet of the jet pipe 6010 through an air conveying pipe 6011.

[0055] During the magnetic separation process, when the pulp flows in the pulp conveying channel 206, some minerals may stay at the bottom of the channel due to their own gravity or other factors and cannot enter the subsequent magnetic separation process, which will reduce the magnetic separation efficiency and mineral recovery rate. The air jet pipe 6010 fixedly connected to the lower end inside the pulp conveying channel 206 ejects an air flow in the same direction as the pulp flow through the air jet openings thereon, which can disturb and push the pulp. The jet of the air flow can keep the pulp in a more active flowing state, reduce the deposition of minerals in the pulp conveying channel 206, ensure that more minerals can smoothly enter the magnetic separation tank 201 for magnetic separation, and improve the processing capacity and utilization rate of the magnetic separator for minerals.

[0056] After the pulp enters the magnetic separation tank 201, the strongly magnetic minerals will adhere to the magnetic separation drum 4. However, the strongly magnetic minerals adhering to the magnetic separation drum 4 often contain some other minerals with lower magnetism or no magnetism. The gas ejected by the air jet pipe 6010 forms bubbles in the pulp. These bubbles will contact the minerals adhering to the magnetic separation drum 4 during the rising process. The buoyancy and impact force generated by the upward movement of the bubbles can further convey and disturb the other adhering minerals, making them fall off the magnetic separation drum 4 more fully and further enhancing the separation effect of the impurity minerals.

[0057] In addition to helping other minerals fall off the magnetic separation drum 4, the impact of the gas can also directly act on the impurities adhering to the strongly magnetic minerals. Under the impact of the gas, those other minerals that are not firmly adhered will be washed away, thereby further improving the purity of the strongly magnetic minerals separated by magnetic separation. This means that in subsequent processing, the quality of the strongly magnetic minerals is higher, reducing the processing cost and difficulty caused by excessive impurities and improving the economic benefits of the entire magnetic separation process.

[0058] The air cylinder 608 on the support 6, the piston rod 609 with a piston, and the relevant one-way valves and air pipes 6011 constitute a clever air supply system. When the magnetic separation drum 4 rotates to drive the transmission disk 604 and the knocking rod 605 to move, the lifting plate 602 will move up and down accordingly. The lifting plate 602 is fixedly connected to the piston rod 609. Therefore, the piston rod 609 will slide in the air cylinder 608. The one-way valves at the air inlet and outlet of the air cylinder 608 ensure that the gas can only flow in a predetermined direction, enabling the air cylinder 608 to convey air to the air jet pipe 6010 through the air pipe 6011. This design utilizes the mechanical movement of the magnetic separator itself to achieve the air jet function without additional power equipment, not only reducing energy consumption but also improving the overall efficiency and reliability of the equipment.

[0059] Example 5:

[0060] Refer to Figures 1 - 10, a highly efficient and environmentally friendly wet permanent magnet drum magnetic separator, which is basically the same as that in Embodiment 4. Furthermore, the knocking rod 605 is detachably connected to the rotating rod 603 through a thread. When the magnetic separator works for a long time, the knocking rod 605 will be worn due to frequent knocking on the magnetic separation drum 4. By using a detachable thread connection, the staff can quickly unscrew the worn knocking rod 605 and replace it with a new part without complex tools and procedures, greatly shortening the downtime for maintenance and ensuring the continuous and efficient operation of the magnetic separator. Under different ore properties and magnetic separation requirements, the knocking force and frequency requirements for the magnetic separation drum 4 are different. By replacing the knocking rods 605 with different materials, shapes, and lengths, the knocking effect can be flexibly adjusted. For example, when processing ores with high hardness, replace the knocking rod 605 with a harder and heavier one to enhance the knocking force and improve the impurity stripping effect. When processing fragile ores, replace it with a knocking rod 605 made of a softer material and with a smaller knocking force to avoid damaging the useful minerals.

[0061] The mounting frame 305 is detachably connected to the mounting shaft 3 through a connecting piece 304. The permanent magnet 306 is mounted on the mounting shaft 3 through the mounting frame 305. During the long-term operation of the magnetic separator, the permanent magnet 306 or the mounting frame 305 may be worn or damaged. By using a detachable connection, the staff can conveniently detach the mounting frame 305 from the mounting shaft 3 to inspect, repair, or replace the permanent magnet 306. In this way, there is no need to disassemble the entire magnetic separator on a large scale, greatly shortening the maintenance time, reducing the maintenance difficulty, and improving the maintainability of the equipment. With the continuous development of technology and the change of ore dressing requirements, it may be necessary to upgrade the permanent magnet 306. For example, replace the permanent magnet 306 with a stronger magnetic one or adjust the arrangement of the permanent magnet 306. The detachable connection enables the mounting frame 305 to be easily removed from the mounting shaft 3, facilitating the replacement and upgrade operations of the permanent magnet 306, realizing the local transformation of the equipment without having to replace the entire magnetic separation drum 4 or related components, reducing the upgrade cost, and improving the adaptability and flexibility of the equipment. The connecting piece 304 consists of a circular clamp and bolts. The clamp can hold the mounting frame 305 and the mounting shaft 3 tightly, and the tightening force of the clamp can be adjusted by tightening the bolts to achieve the connection between the two. Other connection methods can also be used.

[0062] One side of the magnetic separation box 2 close to the magnetic ore discharge chute 203 is provided with a through port communicating with the magnetic ore discharge chute 203. A second guide plate 205 is fixedly connected obliquely downward in the magnetic ore discharge chute 203. The end of the second guide plate 205 penetrates through the through port. Filter holes are provided at the position of the second guide plate 205 inside the magnetic ore discharge chute 203. A liquid discharge port is provided at the bottom of the magnetic ore discharge chute 203. When the strongly magnetic minerals are separated from the magnetic separation drum 4 under the impact of the water flow of the water spray pipe 208 and enter the magnetic ore discharge chute 203, they will slide downward along the inclined surface of the second guide plate 205. Since the filter holes are provided on the second guide plate 205, the water flow can penetrate and flow out through the filter holes, while the strongly magnetic minerals cannot pass through the filter holes due to their larger particle size and continue to slide along the second guide plate 205 to the end, thus realizing the separation of water and strongly magnetic minerals. After the water flow passes through the filter holes of the second guide plate 205, it will gather at the bottom of the magnetic ore discharge chute 203. The liquid discharge port at the bottom of the magnetic ore discharge chute 203 can lead out the collected water, which is convenient to be connected to the subsequent water circulation treatment system. After the water is treated by precipitation, filtration, disinfection, etc., it can be reused for the water spraying of the water spray pipe 208 of the magnetic separator, pulp preparation and other links, realizing the recycling of water resources, reducing the consumption of fresh water resources, reducing the production cost, and at the same time conforming to the environmental protection concept and reducing the pressure on the environment caused by sewage discharge.

[0063] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention.

Claims

1. A high-efficiency and environmentally friendly wet permanent magnet drum magnetic separator for the mining industry, comprising a frame (1), on which a magnetic separation box (2) is fixedly installed. An installation shaft (3) is installed on the frame (1) through a support. A magnetic separation drum (4) is rotatably connected to the installation shaft (3). The magnetic separation drum (4) is located in the magnetic separation tank (201) of the magnetic separation box (2). A permanent magnet (306) is installed in the magnetic separation drum (4). The permanent magnet (306) is installed on the installation shaft (3) through an installation frame (305). A driving mechanism for driving the magnetic separation drum (4) to rotate is installed at one end of the frame (1), and it is characterized in that, It further includes: A bracket (6), symmetrically and fixedly connected to both ends of the frame (1); Support rods (601), symmetrically and fixedly connected to the bracket (6); A lifting plate (602), slidably connected to two of the support rods (601) on the same side; A rotating rod (603), rotatably connected between the two lifting plates (602); Drive discs (604), equidistantly and fixedly connected to the rotating rod (603) and in rolling contact with the magnetic separation drum (4); Two groups of knocking rods (605), symmetrically installed on the rotating rod (603); Wherein, when the knocking rod (605) contacts the magnetic separation drum (4), the drive disc (604) moves upward and separates from the magnetic separation drum (4).

2. An efficient and environmentally friendly wet permanent magnet drum magnetic separator for the mining industry according to claim 1, characterized in that, The drive mechanism includes a drive motor (5), a drive sprocket (501) and a transmission sprocket (502). The drive motor (5) is fixedly installed on the frame (1). The drive sprocket (501) is fixedly connected to the output end of the drive motor (5). The transmission sprocket (502) is sleeved on the mounting shaft (3) and fixedly connected to the magnetic separation drum (4). The drive sprocket (501) and the transmission sprocket (502) are connected by a chain. A protective cover is sleeved on the drive sprocket (501) and the transmission sprocket (502), and the protective cover is fixedly connected to the frame (1).

3. An efficient and environmentally friendly wet permanent magnet drum magnetic separator for the mining industry according to claim 1, characterized in that, On both sides of the magnetic separation tank (2) located at the magnetic separation groove (201), a feed tank ( 4. An efficient and environmentally friendly wet permanent magnet drum magnetic separator for the mining industry according to claim 1, characterized in that, One end of the installation shaft (3) far from the driving mechanism is fixedly connected with a fixed rod (301). The installation shaft (3) is rotatably connected to the support. The end of the fixed rod (301) is rotatably connected with a limit screw rod (302). A fixing piece (101) is installed on one side of the frame (1) close to the fixed rod (301). A through hole matching with the limit screw rod (302) is opened on the fixing piece (101). At a position close to the through hole of the fixing piece (101), nuts (303) threadedly connected with the limit screw rod (302) are symmetrically and rotatably connected.

5. An efficient and environmentally friendly wet permanent magnet drum magnetic separator for the mining industry according to claim 3, characterized in that, A top plate (606) is fixedly connected between the upper ends of two said support rods (601) on the same side. A tension spring (607) is sleeved on the support rod (601). Two ends of the tension spring (607) are respectively fixedly connected with the lifting plate (602) and the top plate (606).

6. The efficient and environmentally friendly wet permanent magnet drum magnetic separator for mining industry according to claim 5, characterized in that, A jet pipe (6010) is fixedly connected to the lower end inside the pulp conveying channel (206). A plurality of jet orifices are equidistantly opened on the jet pipe (6010). The direction of the air flow ejected from the jet pipe (6010) through the jet orifices is the same as the flowing direction of the ore pulp in the pulp conveying channel (206).

7. An efficient and environmentally friendly wet permanent magnet drum magnetic separator for the mining industry according to claim 6, characterized in that, An air cylinder (608) is fixedly connected to the support (6). A piston rod (609) with a piston is slidably connected inside the air cylinder (608). One end of the piston rod (609) extending upward out of the air cylinder (608) is fixedly connected with the lifting plate (602). Check valves are arranged in the air inlet and outlet of the air cylinder (608). The air outlet of the air cylinder (608) is communicated with the air inlet of the jet pipe (6010) through an air conveying pipe (6011).

8. A high-efficiency and environmentally friendly wet permanent magnet drum magnetic separator for the mining industry according to claim 1, characterized in that The knocking rod (605) and the rotating rod (603) are detachably connected by threads.

9. The high-efficiency and environmentally friendly wet permanent magnet drum magnetic separator for mining industry according to claim 1, characterized in that, The mounting bracket (305) and the installation shaft (3) are detachably connected by a connecting piece (304).

10. The wet permanent magnet drum magnetic separator for efficient and environmentally friendly mining according to claim 3, characterized in that , A through hole communicating with the magnetic ore discharge chute (203) is opened on one side of the magnetic separation box (2) close to the magnetic ore discharge chute (203). A second guide plate (205) is fixedly connected obliquely downward in the magnetic ore discharge chute (203). The end of the second guide plate (205) penetrates through the through hole. Filter holes are opened at the position of the second guide plate (205) inside the magnetic ore discharge chute (203). A liquid discharge port is opened at the bottom of the magnetic ore discharge chute (203).

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