Magnetic separation device

Abstract

The embodiment of the present application discloses a magnetic separation device, which includes a frame, a crushing section, a magnetic separation section, and a discharging section. During the working process of the magnetic separation device provided by the embodiment of the present application, ores can be first fed into the crushing section, and the ores are crushed by the crushing section. Then, the crushed ores can be conveyed under the action of gravity into the magnetic separation section located at the bottom of the crushing section. Through the magnetic separation section, gangue minerals and valuable minerals can be separated to obtain two products, namely ores and waste rocks. Finally, under the action of gravity, the two minerals, ores and waste rocks, can be discharged via the discharging section to realize the treatment and conveying of materials. The magnetic separation device provided by the embodiment of the present application can achieve crushing and magnetic separation through one device. During the design process of a concentrator, only one workshop and a set of operating personnel need to be arranged to complete the crushing and magnetic separation of ores, thereby reducing investment and operating costs and increasing the benefits of the concentrator.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of mineral processing, and particularly to a magnetic separation device. Background Art

[0002] Magnetite is an iron ore with relatively large current reserves and the most widely used. Due to its strong magnetism, magnetite is separated and recovered by a magnetic separator with a relatively small magnetic field intensity. Before entering the grinding process, magnetite generally undergoes three or four stages of crushing operations. Each stage of crushing operation is a dissociation of magnetite ore, and some monomer gangue that does not contain magnetite is regenerated. These gangues should be separated and discarded to reduce the amount of ore fed into the grinding and separation operations, reduce the energy consumption and equipment investment of grinding and separation, and thus improve the economic benefits of the concentrator.

[0003] In the current crushing and dry separation operations, crushers and dry separation belt conveyors are respectively used. In this way, two stages of operations need to be set up, and a crushing workshop and a dry separation workshop need to be built separately. As a result, the number of equipment is relatively large, the equipment purchase and construction investment are large, and the operation and maintenance costs are also relatively high. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0005] In view of this, the embodiments of the present application propose a magnetic separation device, including:

[0006] A frame, the frame includes a first platform, a second platform and a third platform;

[0007] A crushing part, the crushing part is connected to the first platform;

[0008] A magnetic separation part, the magnetic separation part is connected to the second platform and is located at the bottom of the crushing part;

[0009] A discharging part, the discharging part is connected to the third platform and is located at the bottom of the magnetic separation part.

[0010] In a feasible implementation manner, the discharging width of the crushing part is 300 mm to 500 mm, and the crushing part includes:

[0011] A strip-type discharging crusher;

[0012] A base, the base is arranged on the first platform, and the strip-type discharging crusher is connected to the first platform;

[0013] A discharging hopper, the discharging hopper is communicated with the strip-type discharging crusher, and part of the discharging hopper extends into the gap between the first platform and the second platform.

[0014] In a feasible implementation, the magnetic separation section includes:

[0015] A feeding trough, the input end of the feeding trough is connected to the output end of the crushing section;

[0016] A first dry separation section and a second dry separation section, the first dry separation section and the second dry separation section are arranged opposite to each other, a dry separation gap is formed between the first dry separation section and the second dry separation section, and the dry separation gap is arranged along the discharge width direction of the crushing section.

[0017] In a feasible implementation, the structures of the first dry separation section and the second dry separation section are the same, and the first dry separation section and the second dry separation section both include:

[0018] A roller;

[0019] A transmission section and a driving section, the transmission section is connected to the driving section and the roller, and the transmission section is used to drive the roller to rotate;

[0020] A first base, the transmission section is connected to the second platform through the first base;

[0021] A second base, the roller is connected to the second platform through the second base;

[0022] A magnetic system, the magnetic system is arranged inside the roller.

[0023] In a feasible implementation, the ratio of the height of the feeding trough to the diameter of the roller is 1.2 to 1.4; and / or

[0024] The magnetic system is a sector permanent magnet, and the built-in included angle of the magnetic system is 110 degrees to 130 degrees; and / or

[0025] The magnetic field strength on the surface of the roller is 400 mT to 600 mT.

[0026] In a feasible implementation, the first dry separation section and the second dry separation section further include:

[0027] A wear-resistant sleeve, the wear-resistant sleeve is sleeved on the roller, and the thickness of the wear-resistant sleeve is 30 mm to 80 mm.

[0028] In a feasible implementation, the discharging section includes:

[0029] A discharging box, the discharging box is connected to the output end of the magnetic separation section;

[0030] A third base, the third base is connected to the discharging box and the third platform;

[0031] A separating component is arranged inside the discharging box and is used for guiding the ore and waste rock.

[0032] In a feasible implementation manner, the discharging box includes:

[0033] A box body, which is connected to the output end of the magnetic separation part;

[0034] A first ore discharge port is formed on one side of the box body and is adapted to the first dry separation part of the magnetic separation part;

[0035] A second ore discharge port is formed on the other side of the box body and is adapted to the second dry separation part of the magnetic separation part;

[0036] A waste rock discharge port is formed on the box body and is located between the first ore discharge port and the second ore discharge port.

[0037] In a feasible implementation manner, there are two separating components, which are respectively located between the first ore discharge port and the waste rock discharge port, and between the second ore discharge port and the waste rock discharge port.

[0038] In a feasible implementation manner, the separating component includes:

[0039] A partition board, which is connected to the box body;

[0040] A horizontal plate is formed at the free end of the partition board, and a plurality of mounting holes are formed on the horizontal plate along the discharging direction of the crushing part;

[0041] A separating plate, which is connected to the horizontal plate through some of the plurality of mounting holes;

[0042] Wherein, the interval between two adjacent mounting holes is 60 mm to 80 mm.

[0043] Compared with the prior art, the present invention has at least the following beneficial effects:

[0044] The magnetic separation device provided in the embodiment of the present application includes a frame, a crushing part, a magnetic separation part and a discharge part, and the crushing part, the magnetic separation part and the discharge part are respectively arranged on the first platform, the second platform and the third platform of the frame. Based on this, during the operation of the magnetic separation device provided in the embodiment of the present application, the ore can be first supplied to the crushing part, and the ore is crushed by the crushing part. Then, the ore after crushing can be transported to the magnetic separation part at the bottom of the crushing part under the action of gravity. The gangue minerals and useful minerals can be separated by the magnetic separation part to obtain two products, ore and waste rock. Finally, under the action of gravity, the ore and waste rock can be discharged through the discharge part to realize the processing and transportation of materials. The magnetic separation device provided in the embodiment of the present application can realize crushing and magnetic separation through one device. In the design process of the mineral processing plant, only one workshop and one set of operators need to be set up to complete the crushing and magnetic separation of the ore, thereby reducing investment and operating costs and increasing the efficiency of the mineral processing plant. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0046] Figure 1 A schematic structural diagram of a magnetic separation device according to an embodiment of the present application.

[0047] in, Figure 1 The corresponding relationship between the reference numerals and component names is as follows:

[0048] 1 frame, 2 first platform, 3 second platform, 4 third platform, 5 belt-type discharge crusher, 6 base, 7 discharge hopper, 8 feeding chute, 9 first dry separation section, 10 second dry separation section, 11 roller, 12 transmission section, 13 first base, 14 second base, 15 magnetic system, 16 discharge box, 17 third base, 18 box body, 19 first ore discharge port, 20 second ore discharge port, 21 waste rock discharge port, 22 partition, 23 horizontal plate, 24 partition plate. DETAILED DESCRIPTION

[0049] In order to better understand the above technical solution, the technical solution of the embodiment of the present application is described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiment of the present application and the specific features in the embodiment are detailed descriptions of the technical solution of the embodiment of the present application, rather than limitations on the technical solution of the present application. In the absence of conflict, the embodiment of the present application and the technical features in the embodiment can be combined with each other.

[0050] like Figure 1As shown in the figure, an embodiment of the present application provides a magnetic separation device, including: a frame 1, the frame 1 includes a first platform 2, a second platform 3 and a third platform 4; a crushing section, the crushing section is connected to the first platform 2; a magnetic separation section, the magnetic separation section is connected to the second platform 3 and is located at the bottom of the crushing section; a discharging section, the discharging section is connected to the third platform 4 and is located at the bottom of the magnetic separation section.

[0051] The magnetic separation device provided by the embodiment of the present application includes a frame 1, a crushing section, a magnetic separation section and a discharging section. The crushing section, the magnetic separation section and the discharging section are respectively arranged on the first platform 2, the second platform 3 and the third platform 4 of the frame 1. Based on this, during the working process of the magnetic separation device provided by the embodiment of the present application, ore can be first supplied into the crushing section, and the ore is crushed by the crushing section. Then, the crushed ore can be conveyed into the magnetic separation section located at the bottom of the crushing section under the action of gravity. Through the magnetic separation section, gangue minerals and useful minerals can be separated to obtain two products, namely ore and waste rock. Finally, under the action of gravity, the two minerals, ore and waste rock, can be discharged through the discharging section to realize the processing and conveying of materials.

[0052] The magnetic separation device provided by the embodiment of the present application can realize crushing and magnetic separation through one device. During the design process of the concentrator, only one workshop and a set of operating personnel need to be set up to complete the crushing and magnetic separation of ore, thereby reducing investment and operating costs and increasing the efficiency of the concentrator.

[0053] It can be understood that the first platform 2, the second platform 3 and the third platform 4 can be arranged in sequence from top to bottom in the height direction of the frame 1. Such a setting facilitates the magnetic separation section to be at the bottom of the crushing section, facilitates the discharging section to be at the bottom of the magnetic separation section, and facilitates the minerals to flow by gravity, which is more cost-saving.

[0054] As Figure 1 As shown in the figure, in a feasible embodiment, the discharging width of the crushing section is 300 mm to 500 mm. The crushing section includes: a strip-type ore discharging crusher 5; a base 6, the base 6 is arranged on the first platform 2, and the strip-type ore discharging crusher 5 is connected to the first platform 2; a discharging hopper 7, the discharging hopper 7 is communicated with the strip-type ore discharging crusher 5, and part of the discharging hopper 7 extends into the gap between the first platform 2 and the second platform 3.

[0055] In this technical solution, the style and parameters of the crushing part are further provided. The crushing part may include a strip-type ore-discharging crusher 5, a base 6 and a discharge hopper 7. The strip-type ore-discharging crusher 5 is connected to the first platform 2 through the base 6, so that the fixation of the strip-type ore-discharging crusher 5 is more reliable. During the working process, the minerals can be put into the strip-type ore-discharging crusher 5. The ore after crushing by the strip-type ore-discharging crusher 5 can be discharged into the gap between the first platform 2 and the second platform 3 through the discharge hopper 7. The magnetic separation part is connected to the discharge hopper 7 to realize the transportation of the crushed minerals to the magnetic separation part.

[0056] In this technical solution, the discharge width of the crushing section is 300mm to 500mm. This arrangement is combined with the magnetic separation section, and the arrangement direction of the magnetic separation section can be arranged along the width direction of the crushing section, which can improve the magnetic separation processing efficiency and the recovery efficiency of useful ore.

[0057] like Figure 1 As shown, in a feasible embodiment, the magnetic separation part includes: a feeding trough 8, the input end of the feeding trough 8 is connected to the output end of the crushing part; a first dry selection part 9 and a second dry selection part 10, the first dry selection part 9 and the second dry selection part 10 are arranged opposite to each other, and a dry selection gap is formed between the first dry selection part 9 and the second dry selection part 10, and the dry selection gap is arranged along the discharge width direction of the crushing part.

[0058] In this technical solution, the structural composition of the magnetic separation section is further provided. The magnetic separation section may include a feeding trough 8, a first dry separation section 9 and a second dry separation section 10, and the first dry separation section 9 and the second dry separation section 10 are arranged along the discharge width direction of the crushing section. During use, the feeding trough 8 can be connected to the discharge hopper 7 by a flange and bolts. The crushed ore can flow into the feeding trough 8 by gravity, and further enter the magnetic separation gap formed by the first dry separation section 9 and the second dry separation section 10. Under the magnetic action of the first dry separation section 9 and the second dry separation section 10, the falling direction of the useful minerals will be changed, so that the useful minerals will deviate in the direction of the first dry separation section 9 or the second dry separation section 10, while the change in the falling path of the gangue minerals is very small. Based on this, the separation of minerals and waste rock can be achieved.

[0059] It is understandable that the discharge length of the strip type ore crusher 5 is generally 1000mm to 2500mm, and the discharge width is generally up to 300mm to 500mm. However, the magnetic field gradient of the dry separation equipment in the conventional technology is large, which brings difficulties to the use of magnetic force in dry separation.

[0060] The magnetic separation equipment provided by the embodiments of the present application is provided with a first dry separation unit 9 and a second dry separation unit 10 along the length direction of the output end on both sides in the width direction of the output end of the crushing unit. This two-way adsorption and separation method in the width direction first utilizes the characteristic of the small size of the material flow in the width direction, greatly reducing the attenuation of the dry separation magnetic force in the material layer from the source, thereby optimizing the dry separation effect. More importantly, this two-way dry separation method is equivalent to each dry separation unit only being responsible for the dry separation in half of the width direction of the material flow, which reduces the width of the material flow by half, thereby greatly reducing the attenuation of the dry separation magnetic force, ensuring the dry separation effect, and effectively ensuring a high recovery rate of magnetic iron.

[0061] As Figure 1 shown, in a feasible embodiment, the structures of the first dry separation unit 9 and the second dry separation unit 10 are the same. The first dry separation unit 9 and the second dry separation unit 10 both include: a roller 11; a transmission part 12 and a driving part. The transmission part 12 is connected to the driving part and the roller 11, and the transmission part 12 is used to drive the roller 11 to rotate; a first base 13, and the transmission part 12 is connected to the second platform 3 through the first base 13; a second base 14, and the roller 11 is connected to the second platform 3 through the second base 14; a magnetic system 15, and the magnetic system 15 is arranged inside the roller 11.

[0062] In this technical solution, the structural compositions of the first dry separation unit 9 and the second dry separation unit 10 are further provided. The structures of the first dry separation unit 9 and the second dry separation unit 10 can be the same. Such a setting facilitates the production, processing and assembly of the magnetic separation equipment, and can further reduce the production cost of the magnetic separation equipment.

[0063] In this technical solution, the first dry separation unit 9 and the second dry separation unit 10 can both include a roller 11, a magnetic system 15, a transmission part 12 and a driving part. During the working process, the driving part is turned on, and the driving part can drive the roller 11 to rotate through the transmission part 12. The roller 11 can provide a guiding function for the conveying of ores. A magnetic system 15 is arranged inside the roller 11, and useful minerals can be attracted through the magnetic system 15, thereby changing the conveying direction of the useful minerals, making the useful minerals shift towards the direction where the first dry separation unit 9 or the second dry separation unit 10 is located, while the change in the falling path of the gangue minerals is very small. Based on this, the separation of minerals and waste rocks can be achieved.

[0064] In this technical solution, the first dry separation unit 9 and the second dry separation unit 10 can both include a first base 13 and a second base 14. Such a setting enables the transmission part 12 and the roller 11 to be more firmly connected to the second platform 3.

[0065] In a feasible embodiment, the ratio of the height of the feeding trough 8 to the diameter of the roller 11 is 1.2 to 1.4.

[0066] In this technical solution, the relationship between the height of the feeding trough 8 and the diameter of the roller 11 is further proposed. By setting the ratio of the height of the feeding trough 8 to the diameter of the roller 11 to be between 1.2 and 1.4, effective separation of valuable minerals and gangue minerals can be ensured. If the ratio of the height of the feeding trough 8 to the diameter of the roller 11 is less than 1.2, it may lead to too low a height of the feeding trough 8, and the influence of the magnetic system 15 above the first dry separation section 9 and the second dry separation section 10 on the movement trajectory of the ore will be weakened, resulting in low recovery efficiency of valuable minerals. If the ratio of the height of the feeding trough 8 to the diameter of the roller 11 is greater than 1.4, it may lead to too high a height of the feeding trough 8. In this case, the influence of the magnetic system 15 above the first dry separation section 9 and the second dry separation section 10 on the movement trajectory of the ore will be enhanced, and some associated minerals may be mixed with the ore minerals to form ore products, resulting in a decrease in the grade of the ore products.

[0067] In a feasible implementation, the magnetic system 15 is a sector-shaped permanent magnet, and the internal included angle of the magnetic system 15 is 11 degrees to 130 degrees.

[0068] In this technical solution, the style of the magnetic system 15 is further provided. The magnetic system 15 is a sector-shaped permanent magnet, and the internal included angle of the magnetic system 15 is 110 degrees to 130 degrees. Such a setting can reduce the cost of the first dry separation section 9 and the second dry separation section 10 on the one hand, and on the other hand, it is convenient for the magnetic system 15 to stably apply the magnetic force to the ore after crushing.

[0069] In a feasible implementation, the magnetic field intensity on the surface of the roller 11 is 400 mT to 600 mT.

[0070] In this technical solution, the magnetic field intensity of the roller 11 is further provided. The magnetic field intensity on the surface of the roller 11 is 400 mT to 600 mT, ensuring that under the magnetic action of the first dry separation section 9 and the second dry separation section 10, the falling direction of valuable minerals will be changed, causing the valuable minerals to shift in the direction where the first dry separation section 9 or the second dry separation section 10 is located, while the change in the falling path of gangue minerals is very small. Based on this, the separation of minerals and waste rocks can be achieved.

[0071] In a feasible implementation, the first dry separation section 9 and the second dry separation section 10 further include: wear-resistant socket parts, which are sleeved on the roller 11, and the thickness of the wear-resistant socket parts is 30 mm to 80 mm.

[0072] In this technical solution, the first dry separation section 9 and the second dry separation section 10 can further include wear-resistant socket parts, which are sleeved on the roller 11. The wear-resistant socket parts can protect the roller 11. The ore will not cause direct wear to the roller 11, and only need to replace the wear-resistant socket parts regularly to complete the maintenance of the first dry separation section 9 and the second dry separation section 10.

[0073] In this technical solution, the thickness of the wear-resistant socket is 30 mm to 80 mm. Such a setting can improve the service life of each wear-resistant socket and reduce the maintenance frequency of the first dry separation section 9 and the second dry separation section 10.

[0074] 0 Such as Figure 1 As shown, in a feasible implementation, the discharging section includes: a discharging box 16, which is connected to the output end of the magnetic separation section; a third base 17, which is connected to the discharging box 16 and the third platform 4; and a separating component, which is arranged in the discharging box 16 and is used for guiding the flow of ore and waste rock.

[0075] In this technical solution, the structural composition of the discharging section is further provided. The discharging section may include a discharging box 16, a third base 17 and a separating component. Through the setting of the discharging box 16, the conveying of minerals can be realized. Through the setting of the third base 17, the discharging box 16 can be stably connected to the third platform 4. Through the setting of the separating component, the ore products and waste rock products can be separated and conveyed.

[0076] Such as Figure 1 As shown, in a feasible implementation, the discharging box 16 includes: a box body 18, which is connected to the output end of the magnetic separation section; a first ore discharge port 19, which is formed on one side of the box body 18 and is adapted to the first dry separation section 9 of the magnetic separation section; a second ore discharge port 20, which is formed on the other side of the box body 18 and is adapted to the second dry separation section 10 of the magnetic separation section; and a waste rock discharge port 21, which is formed on the box body 18 and is located between the first ore discharge port 19 and the second ore discharge port 20.

[0077] In this technical solution, the specific style of the discharging box 16 is further provided. The discharging box 16 can

[0078] include a box body 18, a first ore discharge port 19, a second ore discharge port 20 and a waste rock discharge port 21. After the crushed ore is sorted by the magnetic separation section, under the attraction of the magnetic system 15 of the first dry separation section 9 and the second dry separation section 10 and the action of gravity, the falling path of the useful minerals will shift. Specifically, it will shift in the direction of the first dry separation section 9 or the second dry separation section 10. Finally, it can be discharged through the first ore discharge port 19 and the second ore discharge port 20 to form ore products. And the gangue minerals, due to the low content of magnetic minerals, will directly fall to the waste rock discharge port 21 and finally be discharged through the waste rock discharge port 21 to form waste rock products.

[0079] Such as Figure 1 As shown, in a feasible implementation, there are two separating components, which are respectively located between the first ore discharge port 19 and the waste rock discharge port 21, and between the second ore discharge port 20 and the waste rock discharge port 21.

[0080] In this technical solution, there can be two separating components, which are respectively located between the first ore discharge port 19 and the waste rock discharge port 21, and between the second ore discharge port 20 and the waste rock discharge port 21. Based on this, the separating components can better separate the ore and the waste rock, and can improve the grade of magnetic minerals in the ore product.

[0081] As Figure 1 shown, in a feasible implementation manner, the separating components include: a partition plate 22, which is connected to the box body 18; a horizontal plate 23, which is formed at the free end of the partition plate 22, and a plurality of mounting holes are formed on the horizontal plate 23 along the discharging direction of the crushing part; a separating plate 24, which is connected to the horizontal plate 23 through some of the plurality of mounting holes; wherein, the interval between two adjacent mounting holes is 60 mm to 80 mm.

[0082] In this technical solution, the structural composition of the separating components is further provided. The separating components can include a partition plate 22, a horizontal plate 23 and a separating plate 24. By providing the partition plate 22, the first ore discharge port 19, the second ore discharge port 20 and the waste rock discharge port 21 can be separated, avoiding the mixed discharge of minerals. By providing the horizontal plate 23, an installation position is provided for the separating plate 24. By providing the separating plate 24, the ore and the waste rock can be diverted.

[0083] In some examples, the separating plate 24 can be in a "person" shape or approximately in a "person" shape along the height direction. The minerals first come into contact with the separating plate 24 for diversion and then are discharged through the first ore discharge port 19, the second ore discharge port 20 and the waste rock discharge port 21.

[0084] In this technical solution, a plurality of mounting holes are formed on the horizontal plate 23 along the discharging direction of the crushing part, and the interval between two adjacent mounting holes is 60 mm to 80 mm. Such a setting can adjust the setting position of the separating plate 24 on the horizontal plate 23, and then the separating position of the separating components can be adjusted, so that the magnetic separation device can adjust the separating position based on different selected grades, making the magnetic separation device provided by this application have a higher applicable range.

[0085] It can be understood that useful minerals refer to minerals in which magnetic minerals reach an exploitable degree.

[0086] Embodiment 1

[0087] As Figure 1 shown, the magnetic separation equipment provided by the embodiment of this application includes a crushing part, a magnetic separation part, a discharging part and a frame 1. The frame 1 is divided into upper, middle and lower layers, including a first platform 2, a second platform 3 and a third platform 4 respectively. The base 6 of the crushing part is connected to the first platform 2 at the upper part of the frame 1 through bolts.

[0088] The magnetic separation section consists of a feeding chute 8, a first dry separation section 9 and a second dry separation section 10 which are symmetrically arranged in a mirror image. Each dry separation section consists of a roller 11 and its transmission section 12. The first base 13 and the second base 14 of the two dry separation sections are bolted to the second platform 3 of the frame 1.

[0089] The feeding chute 8 is a box body 18 structure and is arranged below the discharge hopper 7 of the crushing section. Its upper opening is connected to the discharge hopper 7 of the crusher through a flange. The four side plates of the feeding chute 8 are externally connected to the outside of the discharge opening of the crusher. The height of the feeding chute 8 is 1.2 to 1.4 times the diameter of the roller 11.

[0090] Located Figure 1 On the side of the roller 11 of the first dry separation assembly on the left in the [description], a permanent magnet magnetic system 15 with an internal wrap angle of 110 to 130 degrees is arranged towards the material flow side. The magnetic system 15 is fan-shaped and is arranged with the horizontal axis of the roller 11 as the center line.

[0091] Located Figure 1 On the side of the roller 11 of the second dry separation assembly on the right in the [description], a permanent magnet magnetic system 15 with an internal wrap angle of 110 to 130 degrees is arranged towards the material flow side. The magnetic system 15 is fan-shaped and is arranged with the horizontal axis of the sorting roller 11 as the center line.

[0092] The surface of the roller 11 is lined with a wear-resistant socket piece of 30 mm to 80 mm. The wear-resistant socket piece can be made of rubber material. The magnetic field strength on the surface of the roller 11 is 400 mT to 600 mT.

[0093] The discharge section is a box body 18 structure. The third base 17 of the discharge section is bolted to the third platform 4 of the frame 1. Inside the box body 18, there is a first ore discharge opening 19 on the left, a waste rock discharge opening 21 in the middle, and a second ore discharge opening 20 on the right.

[0094] The upper opening of the box body 18 of the discharge section is welded to the four sides of the lower opening of the feeding chute 8. Two herringbone partition plates 24 are arranged between the lower part of the box body 18 between the two rollers 11 and the material flow, and the apex of the herringbone is upward.

[0095] At the lower part of both ends of each partition plate 24, there is a horizontal plate 23. The width of the horizontal plate 23 is 20 - 30 mm. The base of the partition plate 24 is bolted to the horizontal plate 23.

[0096] The magnetic separation device provided by the embodiment of the present application has at least the following beneficial effects:

[0097] 1) The magnetic separation device provided in the embodiment of the present application is equipped with a crushing part, a magnetic separation part and a discharge part from top to bottom, thereby integrating the crushing and dry separation operations into one device. Compared with the traditional crushing and dry separation using two devices, which are independently arranged in different workshops, the embodiment of the present application has a small number of devices, small investment in equipment purchase and construction, and low operating and maintenance costs, which can greatly increase the economic benefits of the mineral processing plant.

[0098] 2) The magnetic separation device provided in the embodiment of the present application, the crushing part, the dry separation part and the discharge part share a frame 1, thereby forming a highly integrated device, which reduces the investment in the device compared to each independent frame 1.

[0099] 3) The magnetic separation device provided in the embodiment of the present application has a roller 11 provided on both sides of the width direction of the discharge port of the crushing part and along the length direction of the discharge port. This bidirectional adsorption sorting method in the width direction first utilizes the characteristic of the small size of the material flow in the width direction, which greatly reduces the attenuation of the dry separation magnetic force in the material layer from the root, thereby optimizing the dry separation effect. More importantly, this bidirectional dry separation method is equivalent to each dry separation part being responsible for the dry separation of only half of the material flow width direction. This reduces the material flow width by half, thereby greatly reducing the attenuation of the dry separation magnetic force, thereby ensuring the effect of dry separation and effectively ensuring the high recovery rate of magnetic iron.

[0100] 4) In the magnetic separation device provided in the embodiment of the present application, both the first dry separation section 9 and the second dry separation section 10 include rollers 11. Compared with the traditional dry separation belt conveyor, the embodiment of the present application has a simple structure, small footprint and low investment.

[0101] 5) In the magnetic separation device provided in the embodiment of the present application, the magnetic field strength of the roller 11 is 400mT-600mT. The use of a strong field strength ensures the full recovery of magnetically separated minerals, thereby greatly reducing the loss of magnetic iron during dry separation at the source.

[0102] 6) In the magnetic separation device provided in the embodiment of the present application, the surface of the roller 11 is lined with a 30mm-80mm wear-resistant sleeve, which advantageously ensures the life of the roller 11, reduces the maintenance frequency of the roller 11, and improves the equipment operation rate.

[0103] 7) In the magnetic separation device provided in the embodiment of the present application, the connection between the partition plate 24 and the long perforated horizontal plate 23 by different bolts can change the position of the partition plate 24, thereby performing different divisions on the ore and waste rock products, thereby ensuring the efficient recovery of magnetic ore and the recovery rate of magnetic iron by dry separation.

[0104] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms such as "installed", "connected", "joined", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "joined" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0105] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as a limitation on the present invention.

Claims

1. A magnetic separation device, characterized in that, Comprising: A frame, the frame including a first platform, a second platform and a third platform; A crushing section, the crushing section being connected to the first platform; A magnetic separation section, the magnetic separation section being connected to the second platform and located at the bottom of the crushing section; A discharging section, the discharging section being connected to the third platform and located at the bottom of the magnetic separation section; The discharging section includes: A discharging box, the discharging box being connected to the output end of the magnetic separation section; A third base, the third base being connected to the discharging box and the third platform; A separating assembly, disposed within the discharging box for guiding the flow of ore and waste rock; Wherein, the discharging box includes: A box body, the box body being connected to the output end of the magnetic separation section; A first ore discharge opening, formed on one side of the box body and adapted to the first dry separation section of the magnetic separation section; A second ore discharge opening, formed on the other side of the box body and adapted to the second dry separation section of the magnetic separation section; A waste rock discharge opening, formed on the box body and located between the first ore discharge opening and the second ore discharge opening; Wherein, there are two separating assemblies, respectively located between the first ore discharge opening and the waste rock discharge opening, and between the second ore discharge opening and the waste rock discharge opening; Wherein, the separating assembly includes: A partition board, the partition board being connected to the box body; A horizontal plate, formed at the free end of the partition board, and a plurality of mounting holes are formed on the horizontal plate along the discharging direction of the crushing section; A separating plate, the separating plate being connected to the horizontal plate through some of the plurality of mounting holes; Wherein, the interval between adjacent two mounting holes is 60 mm to 80 mm.

2. The magnetic separation device according to claim 1, wherein The discharging width of the crushing section is 300 mm to 500 mm, and the crushing section includes: A strip-type ore discharging crusher; A base, the base being disposed on the first platform, and the strip-type ore discharging crusher being connected to the first platform; An ore discharging hopper, the ore discharging hopper being communicated with the strip-type ore discharging crusher, and part of the ore discharging hopper extending into the gap between the first platform and the second platform.

3. The magnetic separation device according to claim 1, characterized in that The magnetic separation section includes: A feeding trough, the input end of the feeding trough being connected to the output end of the crushing section; A first dry separation section and a second dry separation section, the first dry separation section and the second dry separation section being oppositely arranged, and a dry separation gap is formed between the first dry separation section and the second dry separation section, and the dry separation gap is arranged along the discharging width direction of the crushing section.

4. The magnetic separation device according to claim 3, wherein, The structures of the first dry separation section and the second dry separation section are the same, and the first dry separation section and the second dry separation section both include: A roller; A transmission section and a driving section, the transmission section being connected to the driving section and the roller, and the transmission section being used to drive the roller to rotate; A first base, the transmission section being connected to the second platform through the first base; A second base, the roller being connected to the second platform through the second base; A magnetic system, the magnetic system being disposed within the roller.

5. The magnetic separation device according to claim 4, wherein The ratio of the height of the feeding trough to the diameter of the roller is 1.2 to 1.4; and / or The magnetic system is a sector-shaped permanent magnet, and the built-in included angle of the magnetic system is 110 degrees to 130 degrees; and / or The magnetic field strength on the surface of the roller is 400 mT to 600 mT.

6. The magnetic separation device according to claim 5, characterized in that The first dry separation part and the second dry separation part further include: A wear-resistant sleeve, which is sleeved on the roller, and the thickness of the wear-resistant sleeve is 30 mm to 80 mm.

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