Scrubbing device and graphite selection system
By designing a scrubbing device including flow channels and stirring components, the problem of excessive number of milling sections in the graphite selection system is solved, and efficient cleaning of large scale graphite is achieved, energy consumption and medium consumption are reduced, and ore dressing efficiency and cost-effectiveness are improved.
Patent Information
- Application Number
- CN202421242965.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-05-31
AI Technical Summary
The number of milling sections in the existing graphite selection system has caused serious damage to large scale graphite for a long time, and multi-stage grinding flotation leads to high system energy consumption, large medium consumption and high ore dressing costs.
A scrubbing device is designed, including a housing main body and a plurality of fixed components. A flow channel and a stirring member are provided in the housing main body. The rotation of the agitating member generates shear force to clean the concentrate product to be scrubbed, instead of a partial grinding device, reducing the number of grinding segments and reducing media consumption.
It effectively reduces the number of milling segments in the graphite selection system, avoids serious damage to large scale graphite, reduces system energy consumption and medium consumption, and thus reduces ore dressing costs, and improves the grade and yield of concentrate.
Smart Images
Figure CN222659480U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of natural flake graphite beneficiation, in particular to a scrubbing device and a graphite beneficiation system. Background Art
[0002] The natural flake graphite beneficiation mainly adopts the stage grinding and stage separation process. After the raw ore is crushed, ball milled or rod milled, the particle size suitable for flotation is transported to the flotation system through the hydraulic classification equipment. The concentrate products of different grades are then ground by multi-stage (usually more than 7 stages) vertical mills, and then through the flotation machine for multiple selection operations, finally obtaining a graphite concentrate product with a grade of more than 90%.
[0003] However, since the higher the positive mesh content in the graphite concentrate, the higher the economic value of the graphite concentrate, in order to ensure the grade is qualified, multi-stage grinding is adopted, which causes the positive mesh content in the graphite concentrate to be reduced to below 20%, and the large flake graphite is easily severely damaged in the multi-stage grinding process. At the same time, multi-stage grinding prolongs the graphite beneficiation process, increases the grinding energy consumption and medium consumption, and further increases the beneficiation cost. Utility Model Content
[0004] The main purpose of the utility model is to provide a scrubbing device and a graphite concentration system to solve the problems in the prior art of the graphite concentration system that there are too many grinding and selection stages, resulting in serious damage to large-scale graphite flakes during the long grinding and selection process, and multi-stage grinding and flotation leading to high system energy consumption, large medium consumption, and high mineral processing costs.
[0005] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a scrubbing device is provided, including a shell body and a plurality of fixed components respectively arranged in the shell body, the shell body having a flow channel for accommodating the concentrate product to be scrubbed, the plurality of fixed components are respectively arranged at intervals along the extension direction of the flow channel and avoiding the flow channel, and the shell body is also provided with a plurality of stirring components, the stirring components are rotatably arranged between two adjacent fixed components, so that the concentrate product to be scrubbed in the flow channel can be scrubbed by the stirring components.
[0006] Further, the fixing assembly includes a plurality of fixing parts, and the plurality of fixing parts are sequentially spaced apart along the circumferential direction of the flow channel; or, the fixing assembly is an annular structure.
[0007] Furthermore, the scrubbing structure also includes: a mounting column, which is arranged in the shell body along the extension direction of the flow channel, each fixing component is arranged around the mounting column, and a first flow gap is formed between each fixing component and the mounting column for the flow of the concentrate product to be scrubbed.
[0008] Furthermore, there is an installation gap between two adjacent fixed components, and part of the stirring component is located in the installation gap, so that the opposite end surfaces of the stirring component along the extension direction of the flow channel correspond to the two fixed components to form a second flow gap for the flow of the concentrate product to be scrubbed.
[0009] Furthermore, a third flow gap is provided between the end of the stirring member away from the mounting column and the inner wall surface of the shell body for allowing the concentrate product to be scrubbed to flow, and the first flow gap, the second flow gap and the third flow gap are connected in sequence to form a flow channel.
[0010] Further, the end of the stirring component away from the mounting column is located at 2 / 3 of the side wall surface of the fixing assembly in the direction toward the mounting column.
[0011] Furthermore, a fixing component in one fixing assembly and corresponding fixing components in other fixing assemblies are arranged side by side and spaced apart or staggered along the extension direction of the flow channel.
[0012] Furthermore, the stirring component is an impeller; and / or the fixing component is made of stainless steel; and / or the stirring component is made of stainless steel; and / or the shell body is a cylindrical structure.
[0013] Furthermore, the scrubbing structure also includes: a feed port and a discharge port, which are respectively connected to the flow channel, and the two opposite ends of the flow channel along its extension direction are respectively a first end and a second end, and the feed port and the discharge port are respectively correspondingly arranged at the first end and the second end; wherein, the feed port is located below the discharge port.
[0014] According to another aspect of the utility model, a graphite beneficiation system is provided, comprising a crushing structure, a flotation structure and a grinding structure arranged in sequence along a preset process direction, wherein the grinding structure comprises a grinding device and the above-mentioned scrubbing device.
[0015] By applying the technical solution of the utility model, the scrubbing structure includes a shell body and a plurality of fixed components respectively arranged in the shell body, the shell body having a flow channel for accommodating the concentrate product to be scrubbed, the plurality of fixed components are respectively arranged at intervals along the extension direction of the flow channel and avoid the flow channel, and the shell body is also provided with a plurality of stirring components, the stirring components are rotatably arranged correspondingly between two adjacent fixed components, so that the concentrate product to be scrubbed in the flow channel can be scrubbed by the stirring components. In this way, after the concentrated ore product to be scrubbed with a qualified particle size is obtained through the flotation process in the graphite concentration system, the concentrated ore product is respectively ground twice and scrubbed twice by a grinding device and a scrubbing device. The shear force generated by the simultaneous stirring and rotation of multiple stirring components is used to clean the surface of the concentrated ore product to be scrubbed, and finally a concentrated ore product that meets the specifications is obtained, thereby avoiding the concentrated ore product to be scrubbed being in a state of being polished by the grinding device all the time to participate in the whole process of grinding and selection. At the same time, the scrubbing device is used to replace part of the grinding device, which effectively reduces the number of grinding and selection sections polished by the grinding device in the graphite concentration system and reduces the medium consumption in the grinding and washing process, thereby solving the problem of too many grinding and selection sections in the graphite concentration system in the prior art, resulting in serious damage to large-scale flake graphite during the long-term grinding and selection process, and high system energy consumption, large medium consumption and high mineral processing cost caused by multi-stage grinding and flotation. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:
[0017] Figure 1 The overall structural diagram of the scrubbing device provided according to the embodiment of the utility model is shown;
[0018] Figure 2 The present invention shows a process flow chart of the scrubbing device provided in an embodiment of the present invention in a graphite beneficiation system.
[0019] The above drawings include the following reference numerals:
[0020] 100. Scrubbing device; 1. First end; 2. Second end; 10. Shell body; 11. Flow channel; 12. Mounting column; 13. First flow gap; 14. Second flow gap; 15. Third flow gap; 16. Feed inlet; 17. Feed outlet; 20. Fixing assembly; 21. Fixing component; 22. Mounting gap; 23. Mounting end face; 30. Stirring component. DETAILED DESCRIPTION
[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0022] In order to solve the problem that there are too many grinding and flotation stages in the graphite beneficiation system in the prior art, resulting in serious damage to large flake graphite due to the long grinding and flotation process, and multi-stage grinding and flotation resulting in high system energy consumption, large medium consumption and high beneficiation cost.
[0023] like Figure 1 As shown, a technical solution of one aspect of the utility model is applied, and a scrubbing device 100 includes a shell body 10 and a plurality of fixed components 20; the plurality of fixed components 20 are respectively arranged in the shell body 10, and the shell body 10 has a flow channel 11 for accommodating the concentrate product to be scrubbed, and the plurality of fixed components 20 are respectively arranged at intervals along the extension direction of the flow channel 11 and avoid the flow channel 11. A plurality of stirring components 30 are also arranged in the shell body 10, and the stirring components 30 are rotatably arranged between two adjacent fixed components 20, so that the concentrate product to be scrubbed in the flow channel 11 can be scrubbed by the stirring components 30.
[0024] By applying the technical solution of this embodiment, after a concentrate product to be scrubbed with a qualified particle size is obtained through the flotation process in a graphite concentration system, the concentrate product is respectively ground twice and scrubbed twice by a grinding device and a scrubbing device 100, and a plurality of stirring components 30 simultaneously stir and rotate to generate shear force to clean the surface of the concentrate product to be scrubbed, and finally a concentrate product that meets the specifications is obtained, thereby avoiding the concentrate product to be scrubbed from being constantly being polished by the grinding device to participate in the grinding process of the entire process. At the same time, the scrubbing device 100 is used to replace part of the grinding device, effectively reducing the number of grinding sections of the concentrate product to be scrubbed in the graphite concentration system being polished by the grinding device, and reducing the medium consumption in the grinding process, thereby solving the problem in the prior art that there are too many grinding sections in the graphite beneficiation system, resulting in serious damage to large flake graphite during the long grinding process of the concentrate product to be scrubbed, and high system energy consumption, large medium consumption, and high beneficiation cost caused by multi-stage grinding and flotation.
[0025] In this embodiment, the concentrate product to be scrubbed is natural flake graphite ore; and the grinding device is a stirring mill.
[0026] In this embodiment, the fixed assembly 20 includes a plurality of fixed components 21, and the plurality of fixed components 21 are sequentially arranged at intervals along the circumferential direction of the flow channel 11. In this way, by controlling the rotation of the stirring component 30, the concentrate product to be scrubbed in the flow channel 11 is accelerated and stirred and then hits the plurality of fixed components 21 of each fixed assembly 20, thereby changing the movement direction of the concentrate product to be scrubbed, and generating relative movement with the concentrate product to be scrubbed newly entering the flow channel 11. The strong shear force generated by the plurality of stirring components 30 can achieve the cleaning of the surface of the concentrate product to be scrubbed, reducing the process of adding dispersant in the stirring mill in the prior art, thereby effectively reducing the medium consumption in the graphite concentration system, and at the same time, the two scrubbing operations performed by the scrubbing device can achieve efficient cleaning of the concentrate product to be scrubbed.
[0027] Optionally, the fixing assembly 20 is an annular structure. In this way, the gap between two adjacent fixing assemblies 20 among the plurality of fixing assemblies 20 and the opening of the fixing assembly 20 with an annular structure are connected to each other to form the flow channel 11.
[0028] Specifically, the scrubbing device 100 further includes a mounting post 12, which is arranged in the housing body 10 along the extension direction of the flow channel 11, and each fixed component 20 is arranged around the mounting post 12, and a first flow gap 13 for the concentrated mineral product to be scrubbed is formed between each fixed component 20 and the mounting post 12. With the above arrangement, a first flow gap 13 is formed between one end face of the fixed component 21 in each fixed component 20 facing the mounting post 12 and the mounting post 12, so that two first flow gaps 13 are formed between the corresponding two fixed components 21 in two adjacent fixed components 20 and the mounting post 12, and under the acceleration effect of the high-speed rotation of the stirring component 30, the concentrated mineral product to be scrubbed flows into the flow channel 11 from one of the two first flow gaps 13 and flows out from the other, so that the concentrated mineral product to be scrubbed moves at a high speed in the flow channel 11 to achieve cleaning of its surface.
[0029] Furthermore, there is an installation gap 22 between two adjacent fixed components 20, and part of the stirring member 30 is located in the installation gap 22, so that the two opposite end faces of the stirring member 30 along the extension direction of the flow channel 11 correspond to the two fixed components 20 to form a second flow gap 14 for the flow of the concentrate product to be scrubbed. With the above arrangement, the installation gap 22 is formed between the two oppositely arranged installation end faces 23 of the corresponding two fixed components 21 in the two adjacent fixed components 20, so that the concentrate product to be scrubbed flowing from the first flow gap 13 into the second flow gap 14 is accelerated by the high-speed rotation of the stirring member 30 and collides with the installation end face 23 of one fixed component 20 and moves to the third flow gap 15, and the surface of the concentrate product to be scrubbed is cleaned by the collision and the shear force brought by the high-speed rotation of the stirring member.
[0030] Specifically, a third flow gap 15 for the concentrated mineral product to be scrubbed is provided between the end of the stirring member 30 away from the mounting column 12 and the inner wall surface of the housing body 10, and the first flow gap 13, the second flow gap 14 and the third flow gap 15 are sequentially connected to form a flow channel 11. In this way, under the acceleration of the stirring member 30, the concentrated mineral product to be scrubbed collides with the fixed assembly 20 in the first flow gap 13, the second flow gap 14 and the third flow gap 15 respectively, and then moves relatively, and under the shear force of the stirring member 30, the surface of the concentrated mineral product to be scrubbed is cleaned.
[0031] In order to achieve the best effect of stirring the concentrate product to be scrubbed in the flow channel 11, the end of the stirring member 30 away from the mounting column 12 is located at 2 / 3 of the side wall surface of the fixing assembly 20 in the direction toward the mounting column 12. In this way, the gap between the end of the stirring member 30 and the inner wall surface of the housing body 10 is prevented from being too small, which makes it difficult for the concentrate product to be scrubbed to flow in the flow channel 11 under the acceleration of the stirring member 30, affecting the cleaning effect of the scrubbing device 100; at the same time, the gap between the end of the stirring member 30 and the inner wall surface of the housing body 10 is prevented from being too large, which makes the concentrate product to be scrubbed entering the flow channel 11 flow directly from the first flow gap 13 to the second flow gap 14 under the acceleration of the stirring member 30, affecting the cleaning effect of the scrubbing device 100.
[0032] Optionally, a fixed component 21 in one fixed assembly 20 is arranged side by side or staggered with corresponding fixed components 21 in other fixed assemblies 20 along the extension direction of the flow channel 11. In this way, the above arrangement can achieve the blocking of the concentrate product to be scrubbed under the high-speed rotation of the stirring component 30 through the arrangement position between the corresponding fixed component 21 in each fixed assembly 20 and other fixed components 21, so that the concentrate product to be scrubbed collides with the surface of the fixed component 21 and changes its movement direction, so that the concentrate product to be scrubbed is fully cleaned in the flow channel 11.
[0033] In this embodiment, the stirring member 30 is an impeller.
[0034] In this embodiment, the fixing assembly 20 is made of stainless steel; the stirring component 30 is made of stainless steel.
[0035] Specifically, the housing body 10 is a cylindrical structure.
[0036] Optionally, the fixing component 21 is a cylindrical structure or a square structure.
[0037] Specifically, the scrubbing device 100 further includes a feed port 16 and a discharge port 17, the feed port 16 and the discharge port 17 are respectively connected to the flow channel 11, the two opposite ends of the flow channel 11 along its extension direction are respectively a first end 1 and a second end 2, the feed port 16 is arranged at the first end 1, and the discharge port 17 is arranged at the second end 2; wherein, the feed port 16 is located below the discharge port 17. Thus, in the above arrangement, the feed port 16 is located on the outer wall of the shell body 10 at the first end 1, and the discharge port 17 is located on the outer wall of the shell body 10 at the second end 2, so as to realize the inflow and outflow of the scrubbing process of the concentrate product to be scrubbed and the tangential feeding of the concentrate product to be scrubbed from the feed port 16, so as to facilitate the stirring component 30 to fully stir and clean it.
[0038] Please refer to Figure 2 As shown, applying the technical solution of another aspect of the utility model, a graphite concentration system is provided, comprising a crushing structure, a flotation structure and a grinding structure arranged in sequence along a preset process direction, the grinding structure comprising a grinding device and the above-mentioned scrubbing device 100; wherein, the crushing structure is used to crush natural flake graphite ore, and the flotation structure is used to float the product after being crushed to a predetermined specification by the crushing structure to obtain a qualified particle size of a to-be-scrubbed concentrated product, and then the grinding device and the above-mentioned scrubbing device 100 are used to grind and scrub it respectively to obtain the final concentrate.
[0039] Specifically, the process flow of the graphite concentration system is as follows:
[0040] Step 1: The natural flake graphite ore is crushed by the crushing structure, and the final crushed product particle size is less than 1mm. After entering the flotation structure for preliminary sorting, the concentrate produced is a high-quality product and the tailings are a low-quality product.
[0041] Step 2: The concentrate in step 1 is ground by a two-stage grinding device, and then the concentrate is scrubbed by a two-time scrubbing device 100 to produce a final concentrate with a comprehensive positive yield of 20% to 25% and a comprehensive fixed carbon grade of 94%.
[0042] It can be seen that compared with the ordinary 7-grinding and 8-selecting multi-stage grinding and beneficiation method, the natural large-scale flake graphite beneficiation system provided by the technical solution of the utility model can achieve a significant reduction in the number of concentrate grinding stages, effectively reducing the loss of graphite concentrate in multi-stage grinding, and the comprehensive positive yield is 20-25%; and the two scrubbing and beneficiation does not require the addition of grinding media, which saves ceramic ball grinding media compared to ordinary multi-stage grinding.
[0043] Specifically, the final concentrate grade in the graphite concentration system is ≥94%, the tailings grade is 1-1.5%, the mineral processing recovery rate is ≥90%, and the comprehensive positive 100 mesh yield in the final concentrate is 20%-25%.
[0044] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:
[0045] The scrubbing structure includes a shell body and a plurality of fixed components respectively arranged in the shell body. The shell body has a flow channel for accommodating the concentrate product to be scrubbed. The plurality of fixed components are respectively arranged at intervals along the extension direction of the flow channel and avoid the flow channel. The shell body is also provided with a plurality of stirring components. The stirring components are rotatably arranged between two adjacent fixed components so that the concentrate product to be scrubbed in the flow channel can be scrubbed by the stirring components. In this way, after the concentrated ore product to be scrubbed with a qualified particle size is obtained through the flotation process in the graphite concentration system, the concentrated ore product is respectively ground twice and scrubbed twice by a grinding device and a scrubbing device. The shear force generated by the simultaneous stirring and rotation of multiple stirring components is used to clean the surface of the concentrated ore product to be scrubbed, and finally a concentrated ore product that meets the specifications is obtained, thereby avoiding the concentrated ore product to be scrubbed being in a state of being polished by the grinding device all the time to participate in the whole process of grinding and selection. At the same time, the scrubbing device is used to replace part of the grinding device, which effectively reduces the number of grinding and selection sections polished by the grinding device in the graphite concentration system and reduces the medium consumption in the grinding and washing process, thereby solving the problem of too many grinding and selection sections in the graphite concentration system in the prior art, resulting in serious damage to large-scale flake graphite during the long-term grinding and selection process, and high system energy consumption, large medium consumption and high mineral processing cost caused by multi-stage grinding and flotation.
[0046] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.
[0047] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values of the parts and steps described in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in one drawing, it does not need to be further discussed in subsequent drawings.
[0048] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.
[0049] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.
[0050] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A scrubbing device, characterized in that: include: A housing body (10); A plurality of fixing components (20) are respectively arranged in the housing body (10); The shell body (10) has a flow channel (11) therein, and the flow channel is used to accommodate the concentrate product to be scrubbed; the plurality of fixing components (20) are arranged at intervals along the extension direction of the flow channel (11) and are arranged to avoid the flow channel (11); A plurality of stirring components (30) are also arranged in the shell body (10), and the stirring components (30) are rotatably arranged between two adjacent fixed components (20) so that the concentrate product to be scrubbed in the flow channel (11) can be scrubbed by the stirring components (30).
2. The scrubbing device according to claim 1, characterized in that: The fixing assembly (20) comprises a plurality of fixing components (21), and the plurality of fixing components (21) are sequentially arranged at intervals along the circumferential direction of the flow channel (11); or, The fixing component (20) is a ring-shaped structure.
3. The scrubbing device according to claim 1, characterized in that: The scrubbing structure also includes: A mounting column (12) is arranged in the housing body (10) along the extension direction of the flow channel (11), each of the fixing components (20) is arranged around the mounting column (12), and a first flow gap (13) for the concentrate product to be scrubbed to flow is formed between each of the fixing components (20) and the mounting column (12).
4. The scrubbing device according to claim 3, characterized in that: An installation gap is provided between two adjacent fixed assemblies (20), and a portion of the stirring component (30) is located within the installation gap, so that the two opposite end surfaces of the stirring component (30) along the extension direction of the flow channel (11) respectively correspond to the two fixed assemblies (20) to form a second flow gap (14) for the flow of the concentrate product to be scrubbed.
5. The scrubbing device according to claim 4, characterized in that: A third flow gap (15) for allowing the concentrate product to be scrubbed to flow is provided between the end of the stirring member (30) away from the mounting column (12) and the inner wall surface of the shell body (10), and the first flow gap (13), the second flow gap (14) and the third flow gap (15) are connected in sequence to form the flow channel (11).
6. The scrubbing device according to claim 5, characterized in that: The end of the stirring component (30) away from the mounting column (12) is located at 2 / 3 of the side wall surface of the fixing component (20) in the direction toward the mounting column (12).
7. The scrubbing device according to claim 2, characterized in that: One of the fixing components (21) in one of the fixing assemblies (20) and the corresponding fixing components (21) in the other fixing assemblies (20) are arranged side by side and spaced apart or staggered along the extension direction of the flow channel (11).
8. The scrubbing device according to claim 1, characterized in that: The stirring member (30) is an impeller; and / or, The fixing assembly (20) is made of stainless steel; and / or, The stirring member (30) is made of stainless steel; and / or, The shell body (10) is a cylindrical structure.
9. The scrubbing device according to claim 1, characterized in that: The scrubbing structure also includes: The feed port (16) and the discharge port (17) are respectively connected to the flow channel (11); the two opposite ends of the flow channel (11) along its extension direction are respectively a first end and a second end; the feed port (16) and the discharge port (17) are respectively arranged at the first end and the second end; wherein the feed port (16) is located below the discharge port (17).
10. A graphite concentrating system, characterized in that: It comprises a crushing structure, a flotation structure and a grinding structure which are sequentially arranged along a preset process direction, wherein the grinding structure comprises a grinding device and a scrubbing device as claimed in any one of claims 1 to 9.