Vertical built-in crushing and sorting device

Abstract

The present application provides a longitudinal built-in crushing and sorting device, including a crushing part, a dry separation part and a discharge part. The crushing part is used to crush ore materials. The crushing part is arranged above the dry separation part so that the crushed material flow enters the dry separation part. The dry separation part includes four magnetic separation units. The magnetic separation units are arranged on the circumferential side of the material flow. The discharge part is arranged below the dry separation part. The discharge part includes an ore discharge port and a waste rock discharge port. The ore discharge port is arranged on the circumferential side of the waste rock discharge port so that the magnetic separation unit can drive the magnetic minerals in the material flow into the ore discharge port through magnetic force. The waste rock discharge port is located on the moving path of the material flow so that the waste rock in the material flow enters the waste rock discharge port. The longitudinal built-in crushing and sorting device can make the effective sorting depth of the magnetic separation unit greater than the thickness of the material flow, thereby greatly reducing the attenuation of the magnetic force, thereby ensuring a good sorting effect and improving the high recovery rate of magnetic iron.

Description

Technical Field

[0001] The present application belongs to the technical field of mining equipment, and specifically relates to a longitudinal built-in crushing and sorting device. Background Art

[0002] Belt-type crushers are commonly used in mining crushing equipment, with discharge lengths and widths typically ranging up to 300-1000mm. However, conventional dry separation equipment has a large magnetic field gradient, with the field strength decreasing with distance from the magnetic surface. Existing belt-type crushers use a single magnetic system to separate materials from a single direction, but the material flow thickness often exceeds the effective separation depth of the magnetic system, resulting in the loss of some magnetic iron and reducing the recovery rate. Summary of the Invention

[0003] Therefore, the technical problem to be solved by this application is to provide a longitudinal built-in crushing and sorting device so that the effective sorting depth of the magnetic system is greater than the thickness of the material flow, thereby reducing the loss of magnetic iron and improving the recovery rate of magnetic iron.

[0004] In order to solve the above problems, the present application provides a longitudinal built-in crushing and sorting device, including a crushing part, a dry separation part and a discharge part. The crushing part is used to crush ore materials. The crushing part is arranged above the dry separation part so that the crushed material flow enters the dry separation part. The dry separation part includes four magnetic separation units. The magnetic separation units are arranged on the circumferential side of the material flow. The discharge part is arranged below the dry separation part. The discharge part includes an ore discharge port and a waste rock discharge port. The ore discharge port is arranged on the circumferential side of the waste rock discharge port so that the magnetic separation unit can drive the magnetic minerals in the material flow into the ore discharge port through magnetic force. The waste rock discharge port is located on the moving path of the material flow so that the waste rock in the material flow enters the waste rock discharge port.

[0005] Optionally, the magnetic separation unit includes magnetic separation rollers, and four magnetic separation rollers are evenly arranged along the circumference of the material flow.

[0006] Optionally, the central axes of the four magnetic separation rollers are in the same horizontal plane;

[0007] The distance between the magnetic separation roller and the material flow is 100-200 mm;

[0008] The length of the magnetic separation roller along its own axis is 1.1-1.2 times the width of the material flow;

[0009] The magnetic separation roller is provided with a permanent magnetic sector-shaped magnetic system with a magnetic system wrap angle of 110°-130°;

[0010] The surface magnetic field strength of the magnetic separation roller is 400mT-600mT;

[0011] The outer peripheral wall of the magnetic separation roller is provided with wear-resistant rubber, and the thickness of the wear-resistant rubber is 30mm-80mm.

[0012] Optionally, the longitudinal built-in crushing and sorting device further includes a feeding trough, the feed port of the feeding trough is connected to the discharge port of the crushing part, and the four magnetic separation rollers are arranged in the feeding trough.

[0013] Optionally, the longitudinal built-in crushing and sorting device also includes a frame, which includes an upper platform, a middle platform and a lower platform. The crushing part is arranged on the upper platform, the middle platform extends into the feeding trough, the magnetic separation roller is arranged on the middle platform, and the discharge part is arranged on the lower platform.

[0014] Optionally, the dry selection part also includes a driving motor, a belt, an active roller, a first redirecting roller and a second redirecting roller, the belt is sequentially wound around the active roller, the first redirecting roller, the magnetic separation roller and the second redirecting roller, the driving motor drives the magnetic separation roller to rotate through the belt, the driving motor is arranged on the lower platform, the first redirecting roller and the second redirecting roller are arranged on the middle platform, the first redirecting roller and the second redirecting roller are located above the driving motor, the top of the first redirecting roller and the top of the magnetic separation roller are in the same horizontal plane, and the top of the second redirecting roller and the bottom of the magnetic separation roller are in the same horizontal plane.

[0015] Optionally, the distance between the first redirecting roller and the second redirecting roller is 1.1-1.3 times the diameter of the active roller.

[0016] Optionally, the longitudinal built-in crushing and sorting device further includes a discharge hopper, the discharge hopper being located between the crushing section and the dry sorting section, the feed port of the discharge hopper being connected to the discharge port of the crushing section, the discharge port of the discharge hopper being in communication with the feed port of the crushing section, and the cross-sectional area of ​​the discharge hopper decreasing along the moving direction of the material flow;

[0017] The length of the discharge opening of the discharge hopper is 400-600 mm, and the width of the discharge opening of the discharge hopper is 400-600 mm.

[0018] Optionally, the discharge section includes a discharge shell and a separator, the feed end of the shell is connected to the discharge end of the dry separation section, the separator is a hollow cylindrical structure with open upper and lower bottom surfaces, the separator is coaxially arranged in the discharge shell to form the ore discharge port between the separator and the discharge shell, and the hollow portion of the separator is the waste rock discharge port;

[0019] The partition is movably arranged on the discharge shell so that the discharge area of ​​the waste rock discharge port can be adjusted.

[0020] Optionally, the discharge opening of the crushing part is a square opening, and the feeding trough includes four side plates, which correspond to the four sides of the discharge opening of the crushing part one by one and are arranged in parallel, and the vertical distance between the side plates and the corresponding edges of the discharge opening of the crushing part in the horizontal direction is 1.2-1.4 times the diameter of the magnetic separation roller;

[0021] The length of the feeding trough in the vertical direction is 1.2-1.4 times the diameter of the magnetic separation roller.

[0022] Beneficial effects

[0023] The embodiments of the present invention provide a longitudinal built-in crushing and sorting device that can achieve ore material crushing by providing a crushing section. By providing a dry separation section, which includes four magnetic separation units, and the four magnetic separation units are arranged on the circumferential side of the material flow, and thus laying a magnetic field uniformly in the circumferential direction of the material flow, the effective separation depth of the magnetic separation units can be made greater than the thickness of the material flow, thereby greatly reducing the attenuation of the magnetic force, thereby ensuring a good separation effect and improving the high recovery rate of magnetic iron. By providing a discharge section, which includes an ore discharge port and a waste rock discharge port, the sorted ore and waste rock can be discharged separately, preventing the ore and waste rock from mixing together. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic structural diagram of the longitudinal built-in crushing and sorting device according to an embodiment of the present application from a main viewing angle;

[0025] Figure 2 This is a schematic structural diagram of a longitudinal built-in crushing and sorting device according to an embodiment of the present application from a side view;

[0026] Figure 3 This is a schematic structural diagram of the magnetic separation roller according to an embodiment of the present application when viewed from the side.

[0027] The reference numerals indicate:

[0028] 1. Crushing section; 2. Dry separation section; 21. Magnetic separation roller; 211. Magnetic system; 22. Drive motor; 23. Belt; 24. Active roller; 25. First redirecting roller; 26. Second redirecting roller; 3. Discharge section; 31. Ore discharge port; 32. Waste rock discharge port; 33. Discharge shell; 34. Partition; 4. Feed trough; 41. Side panel; 5. Frame; 51. Upper platform; 52. Middle platform; 53. Lower platform; 6. Discharge hopper. DETAILED DESCRIPTION

[0029] See also Figures 1 to 3As shown, according to an embodiment of the present application, a longitudinal built-in crushing and sorting device includes a crushing part 1, a dry separation part 2 and a discharge part 3. The crushing part 1 is used to crush ore. The crushing part 1 is arranged above the dry separation part 2 so that the crushed material flow enters the dry separation part 2. The dry separation part 2 includes four magnetic separation units. The magnetic separation units are arranged on the circumferential side of the material flow. The discharge part 3 is arranged below the dry separation part 2. The discharge part 3 includes an ore discharge port 31 and a waste rock discharge port 32. The ore discharge port 31 is arranged on the circumferential side of the waste rock discharge port 32 so that the magnetic separation unit can drive the magnetic minerals in the material flow into the ore discharge port 31 through magnetic force. The waste rock discharge port 32 is located on the moving path of the material flow so that the waste rock in the material flow enters the waste rock discharge port 32.

[0030] The crushing section 1 is provided to achieve ore material crushing. The dry separation section 2 is provided, and the dry separation section 2 includes four magnetic separation units, which are arranged on the circumferential side of the material flow. The magnetic field is then laid out circumferentially in the material flow. This allows the effective separation depth of the magnetic separation units to be greater than the thickness of the material flow, thereby greatly reducing the attenuation of the magnetic force, thereby ensuring good separation results and improving the high recovery rate of magnetic iron. The discharge section 3 is provided, and the discharge section 3 includes an ore discharge port 31 and a waste rock discharge port 32, which can discharge the separated ore and waste rock separately to prevent the ore and waste rock from mixing together.

[0031] The type of the crushing part 1 can be selected according to actual needs. In this embodiment, the crushing part 1 takes a double-roll crusher as an example.

[0032] The crushing part 1 is arranged right above the dry separation part 2 so that the crushed material flow falls into the dry separation part 2 by its own gravity.

[0033] The magnetic separation unit is arranged on the circumferential side of the overall movement direction of the material flow. In this embodiment, the material flow moves vertically downward, and the four magnetic separation units are arranged horizontally on the circumferential side of the material flow.

[0034] Among them, the iron-containing ore is separated from the waste rock without iron or with low iron content after being subjected to the magnetic force of the magnetic separation unit, and then discharged from the ore discharge port 31. The waste rock without iron or with low iron content is not or is less affected by the magnetic force, and then discharged from the waste rock discharge port 32.

[0035] The magnetic separation unit includes magnetic separation rollers 21. Four magnetic separation rollers 21 are evenly arranged along the circumference of the material flow, thereby ensuring that the material flow is evenly acted upon by the magnetic force along the circumference, thereby ensuring a good separation effect.

[0036] The opposite magnetic separation rollers 21 are arranged in mirror symmetry.

[0037] The four magnetic separation rollers 21 are roughly arranged in a rectangle, and adjacent magnetic separation rollers 21 are arranged at right angles, that is, the magnetic separation rollers 21 are respectively arranged on the front, back, left and right sides of the material flow.

[0038] The four magnetic separation rollers 21 can be of the same size, or they can be flexibly selected based on the cross-sectional shape of the material flow. For example, when the cross-section of the material flow is approximately circular or square, four magnetic separation rollers 21 of the same size can be selected. When the cross-section of the material flow is approximately straight, the length of the magnetic separation rollers 21 arranged along the length direction of the material flow cross-section can be greater than the length of the magnetic separation rollers 21 arranged along the width direction of the cross-section.

[0039] It should be noted that the ores in the material flow are irregular in shape, and the ores will inevitably roll during the falling process. Therefore, even if the ore is located at the center position between the four magnetic separation rollers 21, the resultant magnetic force it receives is not zero, and the ores will inevitably collide with each other during the falling process and cannot always move on the symmetrical plane. Even if there are very few ores that are discharged along with the waste rock because the resultant magnetic force they receive is zero. Compared with the waste of resources caused by the material flow thickness exceeding the effective sorting depth of the magnetic system in the prior art, the present application can still greatly improve the dry sorting effect. The proportion of ores dry-sorted by the longitudinal built-in crushing and sorting device of the present application is much higher than the proportion of ores discharged along with the waste rock because the resultant magnetic force they receive is zero, which can achieve a significant increase in the recovery rate.

[0040] The central axes of the four magnetic separation rollers 21 are in the same horizontal plane, which ensures that the effective separation depths of the four magnetic separation rollers 21 are more uniform, and the material flow is more evenly affected by the magnetic force, thereby ensuring a good separation effect.

[0041] The distance between the magnetic separation roller 21 and the material flow is 100-200mm. The length of the magnetic separation roller 21 along its axis is 1.1-1.2 times the width of the material flow, ensuring full-scale separation in all directions of the material flow and 100% dry separation coverage of the material, thereby fundamentally avoiding the loss of magnetic materials and ensuring the recovery rate of magnetic iron. The magnetic separation roller 21 is equipped with a permanent magnetic sector 211 with a wrap angle of 110°-130°, further ensuring excellent separation results. The surface magnetic field strength of the magnetic separation roller 21 is 400mT-600mT. The strong field strength ensures the full recovery of minerals, thereby significantly reducing the loss of magnetic iron during dry separation at the source.

[0042] The four magnetic separation rollers 21 have the same diameter.

[0043] The shortest distance between the magnetic separation roller 21 and the material flow is 100-200 mm.

[0044] The length of the magnetic separation roller 21 along its own axis is 1.1-1.2 times the width of the material flow facing the magnetic separation roller 21 .

[0045] The wrap angle of the magnetic system 211 is the central angle between the two edges of the outer layer of the magnetic system 211 , and the wrap angle of the magnetic system 211 is a professional term in this field.

[0046] Wear-resistant rubber is provided on the outer peripheral wall of the magnetic separation roller 21. The thickness of the wear-resistant rubber is 30mm-80mm. By providing the wear-resistant rubber, the service life of the magnetic separation roller 21 is effectively guaranteed, the maintenance frequency of the magnetic separation roller 21 is reduced, and the equipment operation rate is improved.

[0047] The wear-resistant rubber is coated on the outer peripheral wall of the magnetic separation roller 21 .

[0048] The length of the wear-resistant rubber along the axial direction of the magnetic separation roller 21 is equal to the axial length of the magnetic separation roller 21 .

[0049] The longitudinal built-in crushing and sorting device also includes a feeding trough 4, the feed port of the feeding trough 4 is connected to the discharge port of the crushing part 1, and four magnetic separation rollers 21 are arranged in the feeding trough 4, which can prevent the material from flying out during sorting, and also prevent the external environment from affecting the sorting.

[0050] The feeding trough 4 is a hollow shell, and the four magnetic separation rollers 21 are arranged in the hollow part.

[0051] The feed port of the feeding trough 4 is located at the top, and the discharge port is located at the bottom, and the material flow passes through the feeding trough 4 from top to bottom.

[0052] Among them, four magnetic separation rollers 21 are arranged in the upper half of the feeding trough 4 in the vertical direction.

[0053] The longitudinal built-in crushing and sorting device also includes a frame 5, which includes an upper platform 51, a middle platform 52 and a lower platform 53. The crushing part 1 is arranged on the upper platform 51, the middle platform 52 extends into the feeding trough 4, the magnetic separation roller 21 is arranged on the middle platform 52, and the discharge part 3 is arranged on the lower platform 53, thereby integrating crushing and dry sorting into one device. Compared with the existing crushing and dry sorting using two devices, which are independently arranged in different workshops, the longitudinal built-in crushing and sorting device in this application has small purchase and construction investment, and low operation and maintenance costs, which can greatly increase the economic benefits of the mineral processing plant.

[0054] Among them, the upper platform 51, the middle platform 52 and the lower platform 53 are all arranged horizontally, and the frame 5 also includes a support plate, and the upper platform 51, the middle platform 52 and the lower platform 53 are all connected to the support plate and then arranged on the ground through the support plate.

[0055] The crushing part 1 is fixedly connected to the top of the upper platform 51 by fixing bolts.

[0056] The magnetic separation roller 21 is arranged on the top of the middle platform 52 through a bearing seat. Specifically, the magnetic separation roller 21 is rotatably arranged on the bearing seat, and the bearing seat is fixedly connected to the top of the middle platform 52 by fixing bolts.

[0057] The dry selection section 2 also includes a drive motor 22, a belt 23, an active roller 24, a first redirecting roller 25 and a second redirecting roller 26. The belt 23 is sequentially wound around the active roller 24, the first redirecting roller 25, the magnetic separation roller 21 and the second redirecting roller 26. The drive motor 22 drives the magnetic separation roller 21 to rotate through the belt 23. The drive motor 22 is arranged on the lower platform 53, and the first redirecting roller 25 and the second redirecting roller 26 are arranged on the middle platform 52. The first redirecting roller 25 and the second redirecting roller 26 are located above the drive motor 22. The top of the first redirecting roller 25 is in the same horizontal plane as the top of the magnetic separation roller 21, and the top of the second redirecting roller 26 is in the same horizontal plane as the bottom of the magnetic separation roller 21. By providing the first redirecting roller 25 and the second redirecting roller 26, the belt 23 can be redirected, thereby enabling the magnetic separation roller 21 to be positioned on the middle platform 52 while the drive motor 22 and the active roller 24 are positioned on the lower platform 53. This fully utilizes the inherent height difference of the entire equipment, reduces the width of the entire equipment, and reduces the size and construction cost of the equipment. By arranging the top of the first redirecting roller 25 and the top of the magnetic separation roller 21 to be in the same horizontal plane, and the top of the second redirecting roller 26 to be in the same horizontal plane as the bottom of the magnetic separation roller 21, the magnetic separation roller 21 can be ensured to operate more smoothly.

[0058] The first redirecting roller 25 is fixed on the middle platform 52 through a bracket, so that the top of the first redirecting roller 25 and the top of the magnetic separation roller 21 are in the same horizontal plane.

[0059] Among them, the driving motor 22 is a variable frequency motor, which can realize variable frequency speed regulation, so that the belt speed of the belt 23 can be adjusted, and then the inertial kinetic energy of the adsorbed magnetic ore during unloading can be adjusted, and the unloading trajectory of the magnetic ore can be changed, thereby adjusting the ratio of materials entering the ore discharge port 31 and the waste rock discharge port 32, so as to maximize the recovery rate of magnetic iron in the dry-selected concentrate.

[0060] The distance between the first redirecting roller 25 and the second redirecting roller 26 is 1.1-1.3 times the diameter of the active roller 24, which can ensure that the magnetic separation roller 21 is driven to rotate more stably.

[0061] The distance between the first redirecting roller 25 and the second redirecting roller 26 is also the shortest distance between the first redirecting roller 25 and the second redirecting roller 26 .

[0062] The longitudinal built-in crushing and sorting device also includes a discharge hopper 6, which is located between the crushing part 1 and the dry selection part 2. The feed port of the discharge hopper 6 is connected to the discharge port of the crushing part 1, and the discharge port of the discharge hopper 6 is communicated with the feed port of the crushing part 1. The cross-sectional area of ​​the discharge hopper 6 decreases along the moving direction of the material flow. By setting the discharge hopper 6, the material discharged from the crushing part 1 can enter the dry selection part 2 to avoid material overflow. The discharge hopper 6 is set to have a decreasing cross-sectional area along the moving direction of the material flow, which can provide a guiding effect on the material discharged from the crushing part 1, so that the discharge port of the crushing part 1 and the feed port of the dry selection part 2 are more adapted.

[0063] The cross-sectional area of ​​the discharge hopper 6 decreases along the moving direction of the material flow, that is, the discharge hopper 6 is a funnel-shaped structure.

[0064] Among them, the feed port of the discharge hopper 6 is connected to the feed port of the crushing part 1 through a flange and bolts. The discharge port of the discharge hopper 6 is connected to the feed port of the feeding trough 4 through a flange and bolts.

[0065] The discharge hopper 6 is fixedly connected to the bottom of the upper platform 51 by bolts.

[0066] The length of the discharge opening of the discharge hopper 6 is 400-600 mm, and the width of the discharge opening of the discharge hopper 6 is 400-600 mm. In this embodiment, the length and width of the discharge opening are 500 mm.

[0067] The discharge section 3 includes a discharge housing 33 and a separator 34. The feed end of the housing is connected to the discharge end of the dry separation section 2. The separator 34 is a hollow cylindrical structure with open upper and lower bottom surfaces. The separator 34 is coaxially arranged within the discharge housing 33 to form an ore discharge port 31 between the separator 34 and the discharge housing 33. The hollow portion of the separator 34 serves as the waste rock discharge port 32. By providing the separator 34, the lower half of the space within the discharge housing 33 is divided into the ore discharge port 31 and the waste rock discharge port 32, thereby achieving separate discharge of waste rock and ore. The separator 34 can be movably arranged on the discharge housing 33 to adjust the feed area of ​​the waste rock discharge port 32. The feed area of ​​the waste rock discharge port 32 and the feed area of ​​the ore discharge can be adjusted according to actual needs, thereby achieving different separation of the ore and waste rock products, thereby ensuring efficient recovery of magnetic ore and ensuring the recovery rate of magnetic iron in dry separation.

[0068] The separator 34 is a hollow square cylindrical structure with open upper and lower bottom surfaces.

[0069] The ore discharge port 31 formed between the partition 34 and the discharge shell 33 is substantially in the shape of a square ring.

[0070] Among them, the partition 34 includes four vertical plates, and the four vertical plates form the partition 34. The four vertical plates are set on the bottom plate of the discharge shell 33 by bolts. The bottom plate is provided with multiple bolt holes, and the position of the vertical plates can be adjusted by installing the bolts in different bolt holes, thereby adjusting the flow area of ​​the waste rock discharge port 32 and the flow area of ​​the ore discharge.

[0071] The discharge port of the crushing part 1 is a square port, and the feeding trough 4 includes four side plates 41. The four side plates 41 correspond to the four sides of the discharge port of the crushing part 1 one by one and are arranged in parallel. The vertical distance between the side plates 41 and the corresponding edges of the discharge port of the crushing part 1 in the horizontal direction is 1.2-1.4 times the diameter of the magnetic separation roller 21. The length of the feeding trough 4 in the vertical direction is 1.2-1.4 times the diameter of the magnetic separation roller 21, which ensures that the magnetic separation roller can perform good sorting of the material flow.

[0072] The feeding trough 4 is a generally hollow rectangular parallelepiped structure, and the four side panels 41 are four vertically arranged trough walls of the feeding trough 4 .

[0073] The embodiment of the present invention provides a longitudinal built-in crushing and sorting device. By providing a crushing section 1, the crushing of ore materials can be achieved. By providing a dry separation section 2, and making the dry separation section 2 include four magnetic separation units, and making the four magnetic separation units arranged on the circumferential side of the material flow, and then laying a magnetic field in the circumferential direction of the material flow, the effective separation depth of the magnetic separation unit can be greater than the thickness of the material flow, thereby greatly reducing the attenuation of the magnetic force, thereby ensuring a good separation effect and improving the high recovery rate of magnetic iron. By providing a discharge section 3, and making the discharge section 3 include an ore discharge port 31 and a waste rock discharge port 32, the sorted ore and waste rock can be discharged separately to prevent the ore and waste rock from mixing together.

Claims

1. A vertical built-in crushing and sorting device, characterized in that: The invention comprises a crushing part (1), a dry separation part (2) and a discharge part (3), wherein the crushing part (1) is used for crushing ore materials, the crushing part (1) is arranged above the dry separation part (2) so that the crushed material flow enters the dry separation part (2), the dry separation part (2) comprises four magnetic separation units, the magnetic separation units are arranged on the circumferential side of the material flow, the material flow moves vertically downward, and the four magnetic separation units are arranged horizontally on the circumferential side of the material flow so that the effective separation depth of the magnetic separation units is greater than the thickness of the material flow, and the discharge part (3) is arranged on the dry separation part ( 2), the discharge portion (3) includes an ore discharge port (31) and a waste rock discharge port (32), the ore discharge port (31) is arranged on the circumferential side of the waste rock discharge port (32), and the iron-containing ore is separated from the waste rock without iron or with little iron content after being subjected to the magnetic force of the magnetic separation unit, so that the magnetic separation unit can drive the magnetic minerals in the material flow into the ore discharge port (31) through the magnetic force, and the waste rock discharge port (32) is located on the moving path of the material flow, so that the waste rock in the material flow enters the waste rock discharge port (32).

2. The vertical built-in crushing and sorting device according to claim 1 is characterized in that: The magnetic separation unit comprises magnetic separation rollers (21), and four magnetic separation rollers (21) are evenly arranged along the circumference of the material flow.

3. The vertical built-in crushing and sorting device according to claim 2 is characterized in that: The central axes of the four magnetic separation rollers (21) are in the same horizontal plane; The distance between the magnetic separation roller (21) and the material flow is 100-200 mm; The length of the magnetic separation roller (21) along its own axis is 1.1-1.2 times the width of the material flow; The magnetic separation roller (21) is provided with a permanent magnetic sector-shaped magnetic system (211) with a magnetic system (211) wrap angle of 110°-130°; The surface magnetic field strength of the magnetic separation roller (21) is 400mT-600mT; The outer peripheral wall of the magnetic separation roller (21) is provided with wear-resistant rubber, and the thickness of the wear-resistant rubber is 30mm-80mm.

4. The vertical built-in crushing and sorting device according to claim 3 is characterized in that: The longitudinal built-in crushing and sorting device further comprises a feeding trough (4), the feeding port of the feeding trough (4) is connected to the discharging port of the crushing part (1), and the four magnetic separation rollers (21) are arranged in the feeding trough (4).

5. The vertical built-in crushing and sorting device according to claim 4 is characterized in that: The longitudinal built-in crushing and sorting device also includes a frame (5), the frame (5) includes an upper platform (51), a middle platform (52) and a lower platform (53), the crushing part (1) is arranged on the upper platform (51), the middle platform (52) extends into the feeding trough (4), the magnetic separation roller (21) is arranged on the middle platform (52), and the discharge part (3) is arranged on the lower platform (53).

6. The vertical built-in crushing and sorting device according to claim 5, characterized in that: The dry separation section (2) further comprises a driving motor (22), a belt (23), an active roller (24), a first redirecting roller (25) and a second redirecting roller (26), wherein the belt (23) is sequentially wound around the active roller (24), the first redirecting roller (25), the magnetic separation roller (21) and the second redirecting roller (26), and the driving motor (22) drives the magnetic separation roller (21) to rotate via the belt (23). The driving motor (22) is arranged at the On the lower platform (53), the first redirecting roller (25) and the second redirecting roller (26) are arranged on the middle platform (52), the first redirecting roller (25) and the second redirecting roller (26) are located above the drive motor (22), the top of the first redirecting roller (25) and the top of the magnetic separation roller (21) are in the same horizontal plane, and the top of the second redirecting roller (26) and the bottom of the magnetic separation roller (21) are in the same horizontal plane.

7. The vertical built-in crushing and sorting device according to claim 6, characterized in that: The distance between the first redirecting roller (25) and the second redirecting roller (26) is 1.1-1.3 times the diameter of the active roller (24).

8. The vertical built-in crushing and sorting device according to claim 1, characterized in that: The longitudinal built-in crushing and sorting device further comprises a discharge hopper (6), the discharge hopper (6) being located between the crushing section (1) and the dry separation section (2), the feed port of the discharge hopper (6) being connected to the discharge port of the crushing section (1), the discharge port of the discharge hopper (6) being in communication with the feed port of the crushing section (1), and the cross-sectional area of ​​the discharge hopper (6) decreasing along the moving direction of the material flow; The length of the discharge opening of the discharge hopper (6) is 400-600 mm, and the width of the discharge opening of the discharge hopper (6) is 400-600 mm.

9. The vertical built-in crushing and sorting device according to claim 1, characterized in that: The discharge section (3) comprises a discharge shell (33) and a separator (34), the feed end of the shell is connected to the discharge end of the dry separation section (2), the separator (34) is a hollow cylindrical structure with open upper and lower bottom surfaces, the separator (34) is coaxially arranged in the discharge shell (33), so as to form the ore discharge port (31) between the separator (34) and the discharge shell (33), and the hollow part of the separator (34) is the waste rock discharge port (32); The partition (34) is movably arranged on the discharge housing (33) so that the material flow area of ​​the waste rock discharge port (32) can be adjusted.

10. The vertical built-in crushing and sorting device according to claim 4, characterized in that: The discharge opening of the crushing part (1) is a square opening, and the feeding trough (4) includes four side plates (41), and the four side plates (41) correspond to the four sides of the discharge opening of the crushing part (1) one by one and are arranged in parallel, and the vertical distance between the side plates (41) and the corresponding edges of the discharge opening of the crushing part (1) in the horizontal direction is 1.2-1.4 times the diameter of the magnetic separation roller (21); The length of the feeding trough (4) in the vertical direction is 1.2-1.4 times the diameter of the magnetic separation roller (21).

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