Sorting equipment and ore grinding system

Abstract

The invention relates to separation equipment and an ore grinding system. The separation equipment comprises a separation tank, a spray pipe, a feeding device, a first material taking device and a second material taking device. The sorting tank is internally provided with a first area and a second area, the first area and the second area are arranged in the first direction, the spray pipe communicates with the sorting tank and is used for introducing sorting slurry into the sorting tank, and the feeding device is arranged on the upper side of the sorting tank and is used for discharging materials to be sorted into the sorting tank in a downward inclined mode in the direction from the first area to the second area. At least part of the first material taking device is arranged at the bottom of the first area, the first material taking device is used for taking out the steel balls in the first area, at least part of the second material taking device is arranged at the bottom of the second area, and the second material taking device is used for taking out hard rock in the second area. The sorting equipment can effectively sort out the steel balls mingled in the hard rock, and the working efficiency of hard rock crushing can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mineral processing, in particular to a sorting device and a grinding system. BACKGROUND

[0002] With the development of large-scale mineral processing plants, the traditional "three-stage closed circuit + ball mill" grinding process has been difficult to meet the production needs of the current large-scale mineral processing plants, and the semi-autogenous grinding process with large processing capacity and strong adaptability to raw ore has gradually become the mainstream process for the current mineral processing and grinding operation. However, the semi-autogenous grinding process also has certain limitations, that is, after the raw ore and steel balls are ground to a certain size, they are difficult to be further ground in the mill to form critical particles (hard stones), and when the hard stones accumulate in the mill, the processing capacity of the mill will be seriously affected.

[0003] In the related art, in order to reduce the influence of hard stones on the grinding operation, the hard stones are often discharged from the mill and then treated by a cone crusher or a high-pressure roller mill, but the above treatment method is difficult to remove the waste steel balls mixed with the hard stones, and the waste steel balls will also cause certain damage to the crushing equipment in the process of crushing the hard stones, thereby affecting the service life of the hard stone crushing equipment and increasing the production cost of the enterprise. SUMMARY

[0004] The present application aims to at least partially solve one of the technical problems in the related art.

[0005] To this end, an embodiment of the present application proposes a sorting device which can effectively sort out the steel balls mixed in the hard stones and is beneficial to improving the operation efficiency of the hard stone crushing.

[0006] An embodiment of the present application also proposes a grinding system.

[0007] The sorting device of the embodiment of the present application comprises: a sorting tank, which has a first zone and a second zone inside, the first zone and the second zone are arranged along a first direction, the first direction is perpendicular to the up-down direction of the sorting tank; a spray pipe, which is communicated with the sorting tank, and is used to introduce sorting slurry into the sorting tank; a feeding device, which is arranged on the upper side of the sorting tank, and is used to arrange the material to be sorted into the sorting tank in a direction from the first zone to the second zone and inclined downward, the steel balls in the material to be sorted can fall into the first zone under the action of their own gravity and the sorting slurry, and the hard stones in the material to be sorted can fall into the second zone under the action of their own gravity and the sorting slurry; a first material taking device, at least part of which is arranged at the bottom of the first zone, and is used to take out the steel balls in the first zone; and a second material taking device, at least part of which is arranged at the bottom of the second zone, and is used to take out the hard stones in the second zone.

[0008] The sorting device according to the embodiment of the present application can introduce sorting slurry into the sorting tank through the spray pipe, so that a heavy medium sorting field can be formed in the sorting tank, when the feeding device arranges the material to be sorted into the sorting tank in a direction from the first zone to the second zone and inclined downward, the hard stones and the steel balls move different distances along the horizontal direction due to their different specific gravities, that is, the hard stones move a distance further than the steel balls due to their small specific gravity, so that the hard stones and the steel balls can be layered along the first direction, and thus the steel balls fall into the first zone and the hard stones fall into the second zone. The first material taking device can take out the steel balls in the first zone, and the second material taking device can take out the hard stones in the second zone, so as to effectively separate the steel balls and the hard stones, and improve the operation efficiency of the subsequent hard stone crushing process.

[0009] In some embodiments, the spray pipe comprises a first spray pipe, a first slurry outlet of the first spray pipe is communicated with the side wall of the sorting tank, and the first slurry outlet sprays the sorting slurry in a direction from the first zone to the second zone.

[0010] In some embodiments, the first spray pipe extends along the first direction and is located below the feeding device.

[0011] In some embodiments, the first spray pipe comprises a plurality of first spray pipes, and at least part of the first spray pipes are arranged in the up-down direction.

[0012] In some embodiments, the spray pipe comprises a second spray pipe, a second slurry outlet of the second spray pipe is communicated with the bottom wall of the sorting tank, and the second slurry outlet sprays the sorting slurry in a direction from bottom to top.

[0013] In some embodiments, the second nozzle extends along the up-down direction.

[0014] In some embodiments, the second nozzles are multiple, part of the second nozzles are arranged below the first zone, and the other part of the second nozzles are arranged below the second zone.

[0015] In some embodiments, the feeding device comprises a feeding chute, the feeding chute extends downwardly along the direction from the first zone to the second zone, and the angle between the feeding chute and the horizontal direction is α, wherein 45°≤α<90°.

[0016] In some embodiments, the mass percentage concentration of the sorting slurry is between 60% and 80%.

[0017] In some embodiments, the bottom of the sorting tank is provided with a partition plate, and the partition plate is arranged between the first zone and the second zone.

[0018] In some embodiments, the bottom of the sorting tank is provided with a slurry outlet, and the slurry outlet is in communication with the second zone.

[0019] In some embodiments, the first feeding device comprises a first conveying scraper, at least part of the first conveying scraper is arranged at the bottom of the first zone, and the movement direction of the first conveying scraper is orthogonal to the first direction.

[0020] In some embodiments, the second feeding device comprises a second conveying scraper, at least part of the second conveying scraper is arranged at the bottom of the second zone, and the movement direction of the second conveying scraper is orthogonal to the first direction.

[0021] Another embodiment of the grinding system of the present application comprises: a sorting device, the sorting device is any one of the sorting devices in the embodiments of the present application; a semi-autogenous mill cyclone, the semi-autogenous mill cyclone is in communication with the nozzle, and the underflow of the cyclone of the semi-autogenous mill cyclone constitutes the sorting slurry.

[0022] The grinding system according to the embodiment of the present application can form a heavy medium separation field in the separation tank by introducing the separation slurry into the separation tank through the spray pipe, so that when the feeding device discharges the material to be separated into the separation tank from the first area to the second area in a downward direction, the hard stone and the steel ball move in the horizontal direction for different distances due to the different specific gravities of the hard stone and the steel ball, i.e., the hard stone moves a distance further than the steel ball due to the smaller specific gravity, so that the steel ball and the hard stone can be separated in the first direction, and thus the steel ball falls into the first area and the hard stone falls into the second area. The first material taking device can take out the steel ball in the first area, and the second material taking device can take out the hard stone in the second area, so as to effectively separate the steel ball and the hard stone, and improve the operation efficiency of the hard stone crushing.

[0023] In addition, since the semi-autogenous cyclone is communicated with the spray pipe, the cyclone underflow of the semi-autogenous cyclone constitutes the separation slurry, so that after the cyclone underflow is used up as the separation slurry, it can be returned to the next process and has no influence on the subsequent grinding system, and the continuous production operation of the steel ball separation, the hard stone crushing and the subsequent grinding system can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a side view of the separation device according to the embodiment of the present application.

[0025] Figure 2 is a side view of the separation device according to the embodiment of the present application. Figure 1 is an enlarged view of A in FIG.

[0026] Figure 3 is a top view of the separation device according to the embodiment of the present application.

[0027] REFERENCE SIGNS:

[0028] 1, separation tank; 11, first area; 12, second area; 13, slurry outlet;

[0029] 2, spray pipe; 21, first spray pipe; 22, second spray pipe;

[0030] 3, feeding device; 31, feeding chute;

[0031] 4, first material taking device; 41, first transport scraper;

[0032] 5, second material taking device; 51, second transport scraper;

[0033] 6, partition; 61, conical portion; 611, first conical surface; 612, second conical surface. DETAILED DESCRIPTION

[0034] Embodiments of the present application are described below in detail with reference to examples shown in the drawings. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0035] The present application will be described below in detail with reference to the drawings. Figures 1 to 3 The sorting device and the grinding system of the embodiments of the present application are described.

[0036] As shown in the drawings, the sorting device of the embodiments of the present application comprises a sorting tank 1, a spray pipe 2, a feeding device 3, a first material taking device 4 and a second material taking device 5. Figures 1 to 3 The sorting tank 1 has a first area 11 and a second area 12, which are arranged along a first direction (e.g. the front-rear direction in the drawings) and are perpendicular to the up-down direction of the sorting tank 1. The spray pipe 2 is in communication with the sorting tank 1 and is used to introduce sorting slurry into the sorting tank 1. The feeding device 3 is arranged on the upper side of the sorting tank 1 and is used to arrange the material to be sorted (i.e. the mixture of steel balls and hard stones) into the sorting tank 1 in a direction (e.g. the front-rear direction in the drawings) from the first area 11 to the second area 12.

[0037] Figure 1 The steel balls in the material to be sorted can fall into the first area 11 under the action of their own gravity and the sorting slurry, and the hard stones in the material to be sorted can fall into the second area 12 under the action of their own gravity and the sorting slurry. Figure 1 At least part of the first material taking device 4 is arranged at the bottom of the first area 11, and the first material taking device 4 is used to take out the steel balls in the first area 11. At least part of the second material taking device 5 is arranged at the bottom of the second area 12, and the second material taking device 5 is used to take out the hard stones in the second area 12.

[0038] According to the sorting device of the embodiments of the present application, the spray pipe 2 can introduce sorting slurry into the sorting tank 1 to form a heavy medium sorting field in the sorting tank 1. When the feeding device 3 arranges the material to be sorted into the sorting tank 1 in a direction (e.g. the front-rear direction in the drawings) from the first area 11 to the second area 12, the hard stones and the steel balls move different distances along the horizontal direction due to their different specific gravities, i.e. the hard stones move a distance further than the steel balls due to their smaller specific gravity, so that the hard stones and the steel balls can be layered along the first direction, and thus the steel balls fall into the first area 11 and the hard stones fall into the second area 12. The first material taking device 4 can take out the steel balls in the first area 11, and the second material taking device 5 can take out the hard stones in the second area 12, so as to effectively separate the steel balls and the hard stones, which is beneficial to improving the operation efficiency of the subsequent hard stone crushing process.

[0039]

[0040] ​​It can be understood that the sorting slurry is liquid and the sorting slurry medium is heavy, when the sorting slurry is fed into the sorting tank 1, a heavy medium sorting field can be formed in the sorting tank 1, due to the different specific gravities of the steel balls and the hard stones, the distances of the steel balls and the hard stones moving along the first direction are also different. Therefore, when the materials to be sorted are thrown into the sorting tank 1, the steel balls fall into the first area 11 due to the large specific gravity and the short moving distance, and the hard stones fall into the second area 12 due to the small specific gravity and the long moving distance. And the heavy medium sorting field formed by the sorting slurry can slow down the falling speed of the steel balls and the hard stones, so as to provide enough time for the steel balls and the hard stones to separate along the first direction.

[0041] The sorting device of the embodiment of the present application separates the steel balls and the hard stones by the specific gravity difference, the sorting process is not affected by the size of the steel balls, the sorting device has small floor space, needs less auxiliary equipment, has small influence on the grinding operation system, is convenient for industrial implementation, and has high sorting efficiency of the steel balls and the hard stones.

[0042] Optionally, as shown in Figure 1 The first spout of the first spout pipe 21 is communicated with the side wall of the sorting tank 1, and the first spout pipe 21 sprays the sorting slurry along the direction from the first area 11 to the second area 12. The sorting device of the embodiment of the present application can form a stable heavy medium sorting field in the sorting tank 1 by arranging the first spout pipe 21 in the above manner, and can provide power for the transverse movement (such as the front-to-back direction movement) of the hard stones and the steel balls, which is helpful for the separation of the hard stones and the steel balls along the front-to-back direction. Figure 1

[0043] As shown in Figure 1 The first spout pipe 21 extends along the first direction and is located below the feeding device 3. It can be understood that the sorting slurry sprayed by the first spout pipe 21 can flow along the transverse direction, so as to make the heavy medium sorting field in the sorting tank 1 more stable. In addition, since the first spout pipe 21 is located below the feeding device 3, the sorting slurry sprayed by the first spout pipe 21 can impact most of the materials falling from the feeding device 3, further improving the sorting effect of the steel balls and the hard stones.

[0044] Exemplarily, as shown in Figure 1 The first spout pipe 21 is multiple, and at least part of the first spout pipes 21 are arranged in the up-and-down direction, so as to make the flow rates of the heavy medium sorting field in the sorting tank 1 at each position along the up-and-down direction substantially consistent, further improving the sorting effect of the steel balls and the hard stones.

[0045] Optionally, as shown in Figure 1 ​As shown, the spray pipe 2 comprises a second spray pipe 22, the second spray pipe 22 has a second spouting opening which is in communication with the bottom wall of the sorting tank 1, the second spouting opening sprays the sorting slurry in the direction from bottom to top. Since the second spouting opening sprays the sorting slurry in the direction from bottom to top, the falling speed of the steel balls and the hard stones can be slowed down, so that enough time is provided for the separation of the steel balls and the hard stones in the first direction, and the phenomenon of the sinking of the slurry into the tank can be avoided.

[0046] Under the cooperation of the first spray pipe 21 and the second spray pipe 22, the stable heavy medium sorting field can be formed in the sorting tank 1, and the mixture of the hard stones and the steel balls can be ensured to move in the first direction (from front to back) with a certain initial speed.

[0047] As shown in the drawings, Figure 1 the second spray pipe 22 extends in the vertical direction. In this way, the sorting slurry sprayed by the second spray pipe 22 can move vertically in the direction from bottom to top, so as to slow down the falling speed of the steel balls and the hard stones, thereby providing enough time for the separation of the steel balls and the hard stones in the first direction.

[0048] Optionally, as shown in the drawings, Figure 1 the second spray pipe 22 is provided in plurality, part of the second spray pipes 22 are arranged below the first area 11, and the other part of the second spray pipes 22 are arranged below the second area 12. In this way, the sorting slurry sprayed by the second spray pipe 22 can be more uniform, the heavy medium sorting field in the sorting tank 1 can be more stable, and the phenomenon of the sinking of the slurry into the sorting tank 1 can be avoided.

[0049] Exemplarily, the plurality of second spray pipes 22 can be arranged in the shape of triangle, rectangle, rhombus, etc.

[0050] It can be understood that the spray pipe 2 can also be replaced by similar devices such as high-pressure spray gun, vibrating sieve plate, vibrating diaphragm, etc. which can form a stable heavy medium sorting field.

[0051] Optionally, as shown in the drawings, Figure 1 and Figure 2 the feeding device 3 comprises a feeding chute 31, the feeding chute 31 extends downwardly and obliquely along the direction from the first area 11 to the second area 12, and the angle between the feeding chute 31 and the horizontal direction is α, wherein 45°≤α<90°. It can be understood that the material to be sorted (the mixture of the hard stones and the steel balls) can slide into the sorting tank 1 along the extension direction of the feeding chute 31 which is inclined, and since the feeding chute 31 has the angle α with the horizontal direction, the mixture of the hard stones and the steel balls falling into the sorting tank 1 has a certain initial speed in the first direction, so as to ensure that the steel balls and the hard stones can form a clear separation zone in the first direction.

[0052] Exemplarily, α can be 45°, 50°, 55°, 60°, 65°, 70°, 75°.

[0053] In the working of the sorting device, the feed chute 31 is inclined to feed the mixture of steel balls and hard stones into the sorting tank 1. The steel balls and hard stones move in different trajectories under the action of their own gravity, the heavy medium buoyancy in the sorting tank 1 and the transverse slurry flow. The steel balls move a short distance in the sorting tank 1 due to their large specific gravity, and the hard stones move a long distance in the sorting tank 1 due to their small specific gravity, thereby achieving effective separation of the steel balls and hard stones.

[0054] Optionally, the mass percentage concentration of the sorting slurry is between 60% and 80%. In this way, a stable heavy medium sorting field can be formed in the sorting tank 1, and the sorting effect of the steel balls and hard stones is good.

[0055] For example, the mass percentage concentration of the sorting slurry can be 60%, 65%, 70%, 75% or 80%.

[0056] Optionally, as shown in Figure 1 and Figure 2 The bottom of the sorting tank 1 is provided with a partition plate 6, which is arranged between the first area 11 and the second area 12. It can be understood that the lower part of the partition plate 6 is connected with the bottom of the sorting tank 1, and the partition plate 6 can prevent the mixing of the steel balls in the first area 11 and the hard stones in the second area 12, in other words, the partition plate 6 can prevent the mixing of the hard stones in the first area 11 and the mixing of the steel balls in the second area 12.

[0057] It should be noted that the position and height of the partition plate 6 should ensure that the steel balls with the smallest particle size do not enter the second area 12, and that the hard stones and steel balls enter the respective transport areas.

[0058] For example, the material of the partition plate 6 can be steel, plastic or rubber.

[0059] For example, as shown in Figure 2 The top of the partition plate 6 has a tapered portion 61 which gradually tapers in the direction from bottom to top. The tapered portion 61 has a first tapered surface 611 and a second tapered surface 612, which are arranged on the two sides of the partition plate 6 in the first direction, respectively. The first tapered surface 611 extends obliquely in the direction from top to bottom towards the direction of the first material taking device 4, so that the steel balls in the first area 11 can slide into the first material taking device 4 under the action of the first tapered surface 611, thereby reducing the probability of steel ball accumulation at the bottom of the first area 11.

[0060] Similarly, the second tapered surface 612 extends obliquely in the direction from top to bottom towards the direction of the second material taking device 5, so that the hard stones in the second area 12 can slide into the second material taking device 5 under the action of the second tapered surface 612, thereby reducing the probability of hard stone accumulation at the bottom of the second area 12.

[0061] Optionally, as shown in Figure 1 the bottom of the sorting tank 1 is provided with a pulp outlet 13, which is in communication with the second zone 12, so that the excess pulp in the sorting tank 1 is discharged into the next operation system through the pulp outlet 13.

[0062] Optionally, as shown in Figure 1 and Figure 3 the first material taking device 4 comprises a first conveying scraper 41, at least a part of the first conveying scraper 41 is arranged at the bottom of the first zone 11, and the moving direction of the first conveying scraper 41 is perpendicular to the first direction. It can be understood that the first conveying scraper 41 can discharge the steel balls at the bottom of the first zone 11 out of the sorting tank 1, so that the sorting device can continuously operate. A part of the first conveying scraper 41 is located at the bottom of the first zone 11, and the other part of the first conveying scraper 41 extends upward and protrudes out of the upper end opening of the first zone 11, so as to discharge the steel balls in the first zone 11.

[0063] As shown in Figure 3 the conveying direction of the first conveying scraper 41 extends generally along the left-right direction. For example, the first conveying scraper 41 can convey the steel balls in the direction from right to left. For the first conveying scraper 41, the distance between two adjacent scrapers is greater than the maximum size of the steel balls.

[0064] Optionally, as shown in Figure 1 and Figure 3 the second material taking device 5 comprises a second conveying scraper 51, at least a part of the second conveying scraper 51 is arranged at the bottom of the second zone 12, and the moving direction of the second conveying scraper 51 is perpendicular to the first direction.

[0065] It can be understood that the second conveying scraper 51 can discharge the hard stones at the bottom of the second zone 12 out of the sorting tank 1, so that the sorting device can continuously operate. A part of the second conveying scraper 51 is located at the bottom of the second zone 12, and the other part of the second conveying scraper 51 extends upward and protrudes out of the upper end opening of the second zone 12, so as to discharge the hard stones in the second zone 12.

[0066] As shown in Figure 3 the conveying direction of the second conveying scraper 51 extends generally along the left-right direction. For example, the second conveying scraper 51 can convey the hard stones in the direction from left to right. For the second conveying scraper 51, the distance between two adjacent scrapers is greater than the maximum size of the hard stones.

[0067] It should be noted that the conveying direction of the first conveying scraper 41 for the steel balls and the conveying direction of the second conveying scraper 51 for the hard stones can be in the same direction or in the opposite direction.

[0068] In other examples, the first and second material taking devices 4 and 5 can be bucket elevators, belt conveyors or other conveying devices.

[0069] The material of the sorting tank 1 can be steel, plastic, Teflon, wood and other materials that can achieve the same function.

[0070] The length of the sorting tank 1 needs to meet the requirement that the steel balls and the hard stones can form a clear boundary in the horizontal direction. The depth of the sorting tank 1 needs to meet the requirement that the steel balls and the hard stones can form a clear boundary in the horizontal direction and the distance that the minerals move in the vertical direction.

[0071] The inner wall of the sorting tank 1 can be provided with a corrosion-resistant material such as rubber or asphalt.

[0072] Optionally, the sorting slurry can be the underflow of the semi-autogenous cyclone, or the sorting slurry can also be other media or organic solvents that do not affect the operation of the grinding system.

[0073] The sorting device of the embodiment of the present application does not need to classify the hard stones. The hard stones can directly fall into the sorting tank 1 after being discharged from the linear vibrating screen and the feeding chute 31 of the semi-autogenous mill. The first and second material taking devices 4 and 5 can automatically return the sorted hard stones and steel balls to the grinding system, so as to realize the continuous production operation of the steel ball sorting and the hard stone crushing and the subsequent grinding system. Moreover, the sorting device of the embodiment of the present application can use the underflow of the semi-autogenous cyclone as the sorting medium. No additional heavy medium configuration and recovery system are needed. The underflow of the cyclone directly returns to the subsequent ball mill system, and has no influence on the subsequent grinding system.

[0074] Another embodiment of the grinding system of the present application comprises a sorting device and a semi-autogenous cyclone (not shown). The sorting device is the sorting device of the present application. The semi-autogenous cyclone is in communication with the nozzle 2. The underflow of the cyclone of the semi-autogenous cyclone constitutes the sorting slurry.

[0075] The grinding system according to the embodiment of the present application can introduce the sorting slurry into the sorting tank 1 through the nozzle 2, so that the heavy medium sorting field can be formed in the sorting tank 1. When the material to be sorted is discharged into the sorting tank 1 by the feeding device 3 from the first zone 11 to the second zone 12 in the direction of the slope, the hard stones and the steel balls move in the horizontal direction at different distances due to the different specific gravities of the hard stones and the steel balls. That is, the hard stones move farther than the steel balls due to the small specific gravity, so that the hard stones and the steel balls can be layered in the first direction. Thus, the steel balls fall into the first zone 11, and the hard stones fall into the second zone 12. The first material taking device 4 can take out the steel balls in the first zone 11, and the second material taking device 5 can take out the hard stones in the second zone 12, so as to realize the effective separation of the steel balls and the hard stones, which is beneficial to improving the operation efficiency of the hard stone crushing.

[0076] In addition, since the semi-autogenous cyclone is communicated with the nozzle 2, the cyclone underflow of the semi-autogenous cyclone constitutes the separation slurry, and thus the cyclone underflow can be returned to the next process after being used up as the separation slurry, and has no influence on the subsequent grinding system, which is beneficial to realize the continuous production operation of the steel ball separation, the hard stone crushing and the subsequent grinding system.

[0077] In the description of the present application, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0078] In addition, the terms "first", "second", "third", etc. are only used for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features referred to. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0079] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection or communication with each other; can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0080] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only means that the horizontal height of the first feature is less than that of the second feature.

[0081] In this disclosure, the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" mean that a particular feature, structure, material, or characteristic is included in at least one embodiment or example of the present disclosure. The illustrative appearances of the above-mentioned terms in various places in the specification are not necessarily referred to the same embodiment or example. Moreover, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples. Furthermore, the terminology "comprising" is used in the disclosure as comprising, but not limited to, any indicated features, integers, steps or components. It is also to be understood that the terminology "comprising" can be replaced by the terminology "consisting of" or "consisting essentially of" in some embodiments or examples.

[0082] Although the above-mentioned embodiments have been shown and described, it is to be understood that the above-mentioned embodiments are exemplary, and should not be understood as limiting the present disclosure, and the changes, modifications, replacements and variations of the above-mentioned embodiments made by those skilled in the art are within the protection scope of the present disclosure.

Claims

1. A sorting device, characterized in that, include: The sorting trough (1) has a first area (11) and a second area (12) inside. The first area (11) and the second area (12) are arranged along a first direction, which is orthogonal to the vertical direction of the sorting trough (1). The nozzle (2) is connected to the sorting tank (1) and is used to introduce sorting slurry into the sorting tank (1); Feeding device (3) is located on the upper side of the sorting tank (1). The feeding device (3) is used to discharge the material to be sorted into the sorting tank (1) at an angle downward from the first zone (11) to the second zone (12). The steel balls in the material to be sorted can fall into the first zone (11) under their own weight and the action of the sorting slurry. The stubborn stones in the material to be sorted can fall into the second zone (12) under their own weight and the action of the sorting slurry. A first material handling device (4), at least a portion of which is located at the bottom of the first area (11), is used to remove steel balls from the first area (11). A second material handling device (5), at least a portion of which is located at the bottom of the second zone (12), is used to remove the stubborn rocks in the second zone (12).

2. The sorting equipment according to claim 1, characterized in that, The nozzle (2) includes a first nozzle (21), the first nozzle (21) of which is connected to the side wall of the sorting tank (1), and the first nozzle sprays the sorted slurry along the direction from the first zone (11) to the second zone (12).

3. The sorting equipment according to claim 2, characterized in that, The first nozzle (21) extends along the first direction and is located below the feeding device (3); And / or, there are multiple first nozzles (21), and at least some of the first nozzles (21) are arranged at intervals along the vertical direction.

4. The sorting equipment according to claim 1, characterized in that, The nozzle (2) includes a second nozzle (22), the second nozzle (22) of which is connected to the bottom wall of the sorting tank (1), and the second nozzle sprays the sorted slurry out in a downward direction.

5. The sorting equipment according to claim 4, characterized in that, The second nozzle (22) extends along the vertical direction; And / or, there are multiple second nozzles (22), with some second nozzles (22) located below the first region (11) and others located below the second region (12).

6. The sorting equipment according to any one of claims 1-5, characterized in that, The feeding device (3) includes a feeding chute (31), which extends downward at an inclination along the direction from the first region (11) to the second region (12), and the angle between the feeding chute (31) and the horizontal direction is α, wherein 45°≤α<90°.

7. The sorting equipment according to any one of claims 1-5, characterized in that, The mass percentage concentration of the sorting slurry is between 60% and 80%.

8. The sorting equipment according to any one of claims 1-5, characterized in that, The bottom of the sorting trough (1) is provided with a partition (6), which is located between the first area (11) and the second area (12); And / or, the bottom of the sorting tank (1) is provided with a slurry outlet (13), which is connected to the second zone (12).

9. The sorting equipment according to any one of claims 1-5, characterized in that, The first material handling device (4) includes a first transport scraper (41), at least a portion of which is disposed at the bottom of the first area (11), and the direction of movement of the first transport scraper (41) is orthogonal to the first direction. And / or, the second material handling device (5) includes a second transport scraper (51), at least a portion of which is disposed at the bottom of the second zone (12), and the direction of movement of the second transport scraper (51) is orthogonal to the first direction.

10. A grinding system, characterized in that, include: The sorting device is the sorting device according to any one of claims 1-9; A semi-autogenous hydrocyclone is connected to the nozzle (2), and the underflow of the hydrocyclone constitutes the sorting slurry.

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