Middling coal fine separation equipment and coal separation system
By designing a fine middlings separation equipment, and utilizing screening and separation devices combined with the fine coal mixture of the raw coal separation system, the middlings can be re-selected and the fine coal recovered, thus solving the problem of middlings resource waste and improving economic efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2026-03-24
AI Technical Summary
In the existing technology, China Coal has failed to fully utilize the potential value of coking coal during the washing and beneficiation process, resulting in resource waste and failure to effectively reprocess and recover clean coal.
Design a fine coal sorting device, including a screening device, a sorting device, a mixing chamber, a mixing chamber and a conveying system. The device recovers fine coal from the middlings through screening and sorting processes, and uses the fine coal mixing liquid from the raw coal sorting system to prepare a middlings re-sorting mixing liquid to achieve the re-sorting of middlings.
The application of fine coal sorting equipment in China Coal Group effectively recovers refined coal from coal mines, making full use of scarce coal resources and creating huge economic benefits.
Smart Images
Figure CN224025249U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of middlings reselection, in particular to a middlings fine separation equipment and coal separation system. BACKGROUND
[0002] Coking coal is an indispensable raw material in coking industry and iron and steel industry. At present, a large amount of middlings generated in the coking coal washing process is directly sold as power coal, which does not fully utilize its potential value and causes serious resource waste. In view of this, the utility model provides a middlings fine separation equipment and coal separation system to reselect and recover fine coal from middlings. SUMMARY
[0003] One of the main purposes of the utility model is to provide a middlings fine separation equipment for reselecting and recovering fine coal from middlings and improving economic benefits. The utility model also provides a coal separation system comprising the above-mentioned middlings fine separation equipment.
[0004] In order to achieve the above-mentioned purpose, the utility model embodiment provides a middlings fine separation equipment for reselecting middlings, wherein the middlings raw material comes from a raw coal separation system, and the middlings raw material contains middlings medium liquid; the raw coal separation system also stores fine coal medium liquid;
[0005] The middlings fine separation equipment comprises a screening device, a separation device, a mixing chamber, a medium mixing chamber and a conveying system.
[0006] The screening device comprises a first screen assembly, the first screen assembly is used for removing medium from the middlings raw material, the material discharge end on the screen of the first screen assembly is communicated with the mixing chamber, and the material discharge end under the screen of the first screen assembly is communicated with the medium mixing chamber.
[0007] The conveying system is used for conveying the material and fine coal medium liquid in the medium mixing chamber to the mixing chamber and conveying the material in the mixing chamber to the separation device.
[0008] Further, the screening device further comprises a second screen assembly.
[0009] The second screen assembly and the first screen assembly are sequentially arranged, the screening particle size of the second screen assembly is greater than that of the first screen assembly, the material discharge end on the screen of the second screen assembly is communicated with the crushing device, and the discharge end of the crushing device is communicated with the mixing chamber.
[0010] Further, the coal separation system further comprises a concentrate chamber for storing the concentrate product of the separation device and a tailing chamber for storing the tailing product of the separation device.
[0011] Further, the working pool is further included;
[0012] The working pool is provided with a plurality of partitions, and the mixing chamber, the medium mixing chamber, the concentrate chamber and the tailing chamber are separated by the partitions.
[0013] Further, the concentrate chamber and the tailing chamber are adjacent, and the upper ends of the concentrate chamber and the tailing chamber are open.
[0014] The sorting device is located above the working pool, and the concentrate outlet of the sorting device is located above the concentrate chamber, and the tailing outlet of the sorting device is located above the tailing chamber.
[0015] Further, the upper end of the mixing chamber is provided with a first mounting part.
[0016] The crushing device is arranged on the first mounting part, and the discharge end of the crushing device is located above the mixing chamber.
[0017] Further, the medium mixing chamber and the mixing chamber are adjacent, and the upper end of the medium mixing chamber is provided with a second mounting part.
[0018] The screening device is arranged on the second mounting part, the sieve upper material discharge end of the first screen assembly is located above the mixing chamber, the sieve lower material discharge end of the first screen assembly is located above the medium mixing chamber, and the sieve upper material discharge end of the second screen assembly is located above the crushing device.
[0019] Further, the raw coal sorting system comprises a clean coal recovery module and a middling coal recovery module.
[0020] The conveying system is further used for conveying the material in the concentrate chamber to the clean coal recovery module and conveying the material in the tailing chamber to the middling coal recovery module.
[0021] Further, the conveying system comprises a first conveying pump and a first conveying pipeline.
[0022] The two ends of the first conveying pipeline are respectively communicated with the mixing chamber and the material inlet end of the sorting device, the first conveying pump is arranged on the first conveying pipeline, and at least one of a density meter, a magnetic substance detection meter and a pressure gauge is further arranged on the first conveying pipeline.
[0023] The utility model discloses another embodiment further provides a coal sorting system, including the middling fine sorting equipment in any embodiment described above.
[0024] The utility model discloses the beneficial effects:
[0025] The utility model provides a medium coal fine separation equipment for medium coal reselection, and the medium coal raw material comes from the raw coal separation system, and the medium coal raw material contains medium coal combined medium liquid, the raw coal separation system still has fine coal combined medium liquid, the medium coal fine separation equipment includes: screening device, sorting device, mixing chamber, combined medium chamber and conveying system, the screening device includes first screen assembly, the first screen assembly is used for medium coal raw material desliming, the first screen assembly's screen material discharge end is connected with the mixing chamber, the first screen assembly's under screen material discharge end is connected with the combined medium chamber, the conveying system is used for conveying the material and fine coal combined medium liquid in the combined medium chamber to the mixing chamber, and is used for conveying the material in the mixing chamber to the sorting device.
[0026] The medium coal fine separation equipment is combined with the original raw coal separation system to reselect the medium coal product of the raw coal separation system, recovers the fine coal in the medium coal product, fully utilizes the scarce coal resources and creates huge economic benefits. BRIEF DESCRIPTION OF DRAWINGS
[0027] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the drawings needed to be used in the specific embodiment or the prior art description will be briefly introduced as follows, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.
[0028] Figure 1 The structure schematic diagram of the medium coal fine separation equipment provided by the utility model embodiment is shown in the figure.
[0029] Figure 2 The structure schematic diagram of the working pool provided by the utility model embodiment is shown in the figure.
[0030] Icon: 1-screening device;2-sorting device;3-crushing device;4-working pool;41-mixing chamber;42-concentrate chamber;43-tailings chamber;44-combined medium chamber;45-baffle;46-first mounting;47-second mounting;51-first conveying pipeline;52-first conveying pump;53-second conveying pipeline;54-second conveying pump;55-third conveying pipeline;56-third conveying pump;57-fourth conveying pump;58-fourth conveying pipeline. SPECIFIC EMBODIMENT
[0031] The technical solutions of the present utility model will be described clearly and completely below in connection with the embodiments. Obviously, the described embodiments are some of the embodiments of the present utility model, but not all the embodiments. Based on the embodiments in the present utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the scope of the present utility model.
[0032] As shown in Figure 1 and Figure 2 An embodiment of the present utility model provides a medium coal fine separation equipment for medium coal reselection, the medium coal raw material of which comes from a raw coal separation system, and the medium coal raw material contains medium coal medium mixture liquid; the raw coal separation system also contains clean coal medium mixture liquid; the medium coal fine separation equipment comprises a screening device 1, a separation device 2, a mixing chamber 41, a medium mixture chamber 44 and a conveying system; the screening device 1 comprises a first screen assembly, the first screen assembly is used for medium coal raw material medium removal, the screen material discharge end of the first screen assembly is communicated with the mixing chamber 41, and the under-screen material discharge end of the first screen assembly is communicated with the medium mixture chamber 44; the conveying system is used for conveying the material and the clean coal medium mixture liquid in the medium mixture chamber 44 into the mixing chamber 41, and conveying the material in the mixing chamber 41 into the separation device 2.
[0033] The medium coal fine separation equipment provided by the embodiment is used for medium coal reselection; wherein, the medium coal raw material for medium coal reselection comes from a raw coal separation system. The raw coal separation system comprises a three-stage heavy medium cyclone, a medium mixture barrel, a clean coal recovery module, a medium coal recovery module and a gangue recovery module. After the raw coal is separated by the three-stage heavy medium cyclone, clean coal products, medium coal products and gangue products are obtained, the medium coal products are the medium coal raw material of the medium coal fine separation equipment, and the medium coal products can be conveyed to the medium coal fine separation equipment by a chute or the like for reselection to recover clean coal therein. The clean coal recovery module, the medium coal recovery module and the gangue recovery module are generally composed of structures such as an arc screen, a medium removal screen and a centrifuge, and are used for medium removal and dewatering. The medium mixture liquid obtained by medium removal of the above three products is conveyed to the medium mixture barrel for recovery, and can be mixed with the raw coal and conveyed to the three-stage heavy medium cyclone for raw coal separation. In addition, the raw coal separation system also has a clean coal medium mixture pipeline for conveying clean coal medium mixture liquid, and a tee joint is additionally arranged on the clean coal medium mixture pipeline to convey part of the clean coal medium mixture liquid to the medium coal fine separation equipment for configuring medium coal reselection medium mixture liquid.
[0034] The medium coal fine separation equipment includes a screening device 1, a separation device 2, a mixing chamber 41, a medium coal medium mixing chamber 44 and a conveying system. The screening device 1 includes a screen frame and a first screen assembly located in the screen frame. The medium coal product of the raw coal separation system is used as the medium coal raw material of the medium coal fine separation equipment. The first screen assembly is used for removing the medium coal medium from the medium coal raw material, so as to obtain the reselected medium coal and the medium coal medium. The purpose of removing the medium coal medium is to remove most of the medium coal medium in the medium coal raw material. Since the content of the medium coal medium in the medium coal raw material is very high, if the medium coal raw material is directly conveyed to the separation device, the separation of the medium coal raw material will be affected. The reselected medium coal is conveyed to the mixing chamber 41 as the material on the screen of the first screen assembly. The medium coal medium is conveyed to the medium coal medium mixing chamber 44 as the material under the screen of the first screen assembly, and is used for configuring the medium coal medium required for subsequent medium coal reselection. The conveying system includes a first conveying pump 52, a first conveying pipeline 51, a second conveying pump 54, a second conveying pipeline 53 and a clean coal medium conveying pipeline. The two ends of the second conveying pipeline 53 are respectively connected with the medium coal medium mixing chamber 44 and the mixing chamber 41. The two ends of the clean coal medium conveying pipeline are respectively connected with a three-way pipe added to the clean coal medium pipeline and the mixing chamber 41. The second conveying pump 54 is arranged on the second conveying pipeline 53 and pumps the medium coal medium in the medium coal medium mixing chamber 44 to the mixing chamber 41. The clean coal medium is conveyed to the mixing chamber 41 through the clean coal medium conveying pipeline. The medium coal medium and the clean coal medium are mixed in the mixing chamber 41 to obtain the medium coal medium for reselection. The ratio of the medium coal medium and the clean coal medium is set according to the actual situation, which is not within the protection scope of the utility model. The two ends of the first conveying pipeline 51 are respectively connected with the mixing chamber 41 and the feeding end of the separation device 2. The first conveying pump 52 is arranged on the first conveying pipeline 51 and pumps the reselected medium coal and the medium coal medium for reselection in the mixing chamber 41 to the separation device 2 for separation, and clean coal products and tailing products are obtained.
[0035] The medium coal fine separation equipment provided in the embodiment can be combined with the original raw coal separation system to reselect the medium coal product of the raw coal separation system and recover the clean coal in the medium coal product, so that the scarce coal resources are fully utilized and great economic benefits are created.
[0036] The medium coal fine separation equipment provided in the embodiment can be combined with the original raw coal separation system to reselect the medium coal product of the raw coal separation system and recover the clean coal in the medium coal product, so that the scarce coal resources are fully utilized and great economic benefits are created. Figure 1 Figure 2 As shown in the drawings, the medium coal fine separation equipment further includes a crushing device 3. The screening device 1 further includes a second screen assembly. The second screen assembly and the first screen assembly are sequentially arranged. The screening particle size of the second screen assembly is greater than that of the first screen assembly. The material on the screen of the second screen assembly is communicated with the crushing device 3. The outlet of the crushing device 3 is communicated with the mixing chamber 41.
[0037] The aforementioned screening device 1 is a double-layer screen. Screening device 1 also includes a second screen assembly disposed within the screen frame. The screening particle size of the second screen assembly is larger than that of the first screen assembly. The second screen assembly is used to classify the middlings raw material to avoid the middlings raw material having excessively large particle sizes that would affect the subsequent sorting by the sorting device 2. The aforementioned crushing device 3 can be a vertical compound crusher, used to crush the material on the screen of the second screen assembly. In use, the middlings product of the raw coal sorting system is transported to the second screen assembly via a chute as the middlings raw material for the middlings fine sorting equipment. The material on the screen of the second screen assembly is the first middlings. The material undersize from the second screen assembly falls directly onto the first screen assembly; the first middlings are conveyed to the crushing device 3 for crushing to obtain the third middlings, and the material oversize from the first screen assembly is the second middlings. Both the second and third middlings are conveyed to the mixing chamber 41 as middlings for re-selection. The material undersize from the first screen assembly is middlings mixture, which is conveyed to the mixing chamber 44; the middlings mixture in the mixing chamber 44 and the clean coal mixture from the raw coal separation system are conveyed to the mixing chamber 41 in proportion by the conveying system to obtain a mixture of re-selected middlings and middlings re-selection mixture, which is then conveyed to the separation device 2 for separation.
[0038] Optionally, in this embodiment, a portion of the middlings medium in the mixing chamber 44 can be pumped back to the raw coal sorting system via a conveying pipeline and a conveying pump to prepare the medium liquid used in the raw coal sorting process.
[0039] The fine coal separation equipment provided in this embodiment of the utility model, such as... Figure 1 and Figure 2 As shown, the fine coal sorting equipment also includes a concentrate chamber 42 for storing the concentrate products of the sorting device 2 and a tailings chamber 43 for storing the tailings products of the sorting device 2.
[0040] As mentioned above, the products of the refined coal after separation by the separation device 2 are concentrate and tailings. The concentrate is transported to the concentrate chamber 42 for storage, and the tailings are transported to the tailings chamber 43 for storage. After the concentrate in the concentrate chamber 42 and the tailings in the tailings chamber 43 accumulate to a certain amount, they are transported by the conveying system to the raw coal separation system for recovery. The inclusion of concentrate chamber 42 and tailings chamber 43 in the refined coal separation equipment enhances the overall integrity of the equipment, improves its functionality, and facilitates intelligent control.
[0041] The fine coal separation equipment provided in this embodiment of the utility model, such as... Figure 1 and Figure 2 As shown, it also includes a working pool 4; the working pool 4 is provided with multiple partitions 45, which separate the mixing chamber 41, the mixing chamber 44, the concentrate chamber 42 and the tailings chamber 43.
[0042] Preferably, in this embodiment, a partition plate 45 is provided in the working pool 4 to divide the interior of the working pool 4 into multiple spaces, namely a mixing chamber 41, a combined medium chamber 44, a concentrate chamber 42, and a tailings chamber 43. By arranging the partition plate 45 in the working pool 4 to separate the mixing chamber 41, the combined medium chamber 44, the concentrate chamber 42, and the tailings chamber 43, the medium coal fine separation equipment occupies a small space, has strong integrity, is convenient for control, inspection, maintenance, etc. Among them, the mixing chamber 41, the combined medium chamber 44, the concentrate chamber 42, and the tailings chamber 43 are preferably arranged in a "field" shape, that is, two of the above-mentioned partition plates 45 are arranged in a "cross" shape. In this way, the structure of the medium coal fine separation equipment is more compact and convenient for layout. Optionally, the mixing chamber 41, the combined medium chamber 44, the concentrate chamber 42, and the tailings chamber 43 can also be arranged in a straight line, and only four spaced partition plates 45 need to be arranged in the working pool 4. It can be understood that in this embodiment, four independent barrel structures can also be set as the above-mentioned mixing chamber 41, combined medium chamber 44, concentrate chamber 42, and tailings chamber 43.
[0043] In this embodiment, a fine coal combined medium liquid inlet is provided on a partial side wall of the working pool 4 in the mixing chamber 41, which is used to connect with the above-mentioned fine coal combined medium conveying pipeline; arranging the fine coal combined medium liquid inlet on the side wall of the working pool 4 can facilitate the routing of the fine coal combined medium conveying pipeline. Subsequently, the screening device 1, the crushing device 3, and the sorting device 2 can be arranged above the working pool 4, which can avoid the influence of the fine coal combined medium conveying pipeline on the arrangement of the screening device 1, the crushing device 3, and the sorting device 2.
[0044] The medium coal fine separation equipment provided by the embodiment of the present invention, as Figure 1 and Figure 2 shown, the concentrate chamber 42 and the tailings chamber 43 are adjacent, and the upper ends of the concentrate chamber 42 and the tailings chamber 43 are both open; the sorting device 2 is located above the working pool 4, and the concentrate outlet of the sorting device 2 is located above the concentrate chamber 42, and the tailings outlet of the sorting device 2 is located above the tailings chamber 43.
[0045] Preferably, in this embodiment, in the working pool 4, the concentrate chamber 42 and the tailings chamber 43 are adjacent, and the upper ends of the concentrate chamber 42 and the tailings chamber 43 are both open. The above-mentioned sorting device 2 is arranged above the partition plate 45 between the concentrate chamber 42 and the tailings chamber 43. Moreover, the concentrate outlet of the sorting device 2 is located above the concentrate chamber 42, and the tailings outlet is located above the tailings chamber 43. In this way, the concentrate products discharged from the concentrate outlet can directly enter the concentrate chamber 42, and the products discharged from the tailings outlet can directly enter the tailings chamber 43. There is no need to set auxiliary structures such as chutes or pipelines, which can improve the compactness of the medium coal fine separation equipment, facilitate the layout of the medium coal fine separation equipment, and reduce the overall cost.
[0046] The medium coal fine separation equipment provided by the embodiment of the present invention, as Figure 1 and Figure 2As shown, the upper end of the mixing chamber 41 is provided with a first mounting member 46; the crushing device 3 is arranged on the first mounting member 46, and the discharge end of the crushing device 3 is located above the mixing chamber 41.
[0047] In the embodiment, the crushing device 3 is arranged above the mixing chamber 41 through the first mounting member 46, and the discharge end of the crushing device 3 is also located above the mixing chamber 41, so that the third middlings of the crushing device 3 can directly enter the mixing chamber 41 without the auxiliary structure such as a chute or a pipeline, which can improve the compactness of the middlings fine separation device, facilitate the arrangement of the middlings fine separation device, and reduce the overall cost.
[0048] Optionally, in the embodiment, the first mounting member 46 is a plate structure, which has good stability, and the periphery of the first mounting member 46 is connected with the upper edge of the mixing chamber 41, that is, the frame of the open end of the mixing chamber 41, so that the first mounting member 46 in the plate structure can also close the open end of the mixing chamber 41, thereby avoiding the splashing of the middlings re-separation medium when the third middlings discharged by the crushing device 3 enter the mixing chamber 41. Of course, in the embodiment, the first mounting member 46 can also be a beam or a frame structure, which can achieve the purpose of supporting the crushing device 3 in the embodiment. The first mounting plate is provided with an opening corresponding to the discharge end of the crushing device 3, and the third middlings discharged by the discharge end of the crushing device 3 can enter the mixing chamber 41 through the opening; further, the first mounting member 46 is also provided with an opening corresponding to the second conveying pipeline 53, so as to inject the middlings medium into the mixing chamber 41.
[0049] The middlings fine separation device provided by the embodiment of the utility model has the advantages that Figure 1 and Figure 2 As shown, the medium mixing chamber 44 and the mixing chamber 41 are adjacent, and the upper end of the medium mixing chamber 44 is provided with a second mounting member 47; the screening device 1 is arranged on the second mounting member 47; the sieve upper material discharge end of the first screen assembly is located above the mixing chamber 41, the sieve lower material discharge end of the first screen assembly is located above the medium mixing chamber 44; and the sieve upper material discharge end of the second screen assembly is located above the feeding end of the crushing device 3.
[0050] In this embodiment, the oversize material of the second screen assembly will be discharged into the crushing device 3. To improve the integrity of the medium coal fine separation equipment, the screening device 1 is arranged beside the crushing device 3. In this way, only structures such as chutes need to be set up to achieve the purpose of conveying the first medium coal discharged from the second screen assembly to the crushing device 3. Further, the oversize material of the first screen assembly will be directly discharged into the mixing chamber 41, and the undersize material of the first screen assembly will be directly discharged into the combined medium chamber 44. Therefore, preferably, the mixing chamber 41 and the combined medium chamber 44 are arranged adjacent to each other; the oversize material of the first screen assembly can be discharged into the mixing chamber 41 through a chute, so an opening for receiving the oversize material of the first screen assembly needs to be provided on the first mounting member 46. As mentioned above, the mixing chamber 41, the combined medium chamber 44, the concentrate chamber 42, and the tailings chamber 43 are arranged in a "field" shape. Therefore, the concentrate chamber 42 and the tailings chamber 43 are located on the same side, and the mixing chamber 41 and the combined medium chamber 44 are located on the same side. The screening device 1 is arranged above the combined medium chamber 44 to improve the integrity of the medium coal fine separation equipment, and a second mounting member 47 is provided at the upper end of the combined medium chamber 44 for mounting the screening device 1.
[0051] Preferably, in this embodiment, the second mounting member 47 is also a plate-like structure with good stability. The four sides of the second mounting member 47 are connected to the upper edge of the combined medium chamber 44, so that the second mounting member 47 can also close the open end of the combined medium chamber 44 to prevent the medium coal combined liquid in the combined medium chamber 44 from splashing. Of course, in this embodiment, the second mounting member 47 can also be set as a beam, or a frame structure, etc., which can all achieve the purpose of supporting the screening device 1 in this embodiment. An opening corresponding to the undersize material discharge end of the first screen assembly of the screening device 1 is provided on the second mounting plate, so that the undersize material of the first screen assembly can enter the combined medium chamber 44.
[0052] The medium coal fine separation equipment provided by the embodiment of the present invention, as Figure 1 and Figure 2 shown, the raw coal separation system includes a clean coal recovery module and a medium coal recovery module; the conveying system is also used to convey the materials in the concentrate chamber 42 to the clean coal recovery module, and to convey the materials in the tailings chamber 43 to the medium coal recovery module.
[0053] The clean coal recovery module and the middling coal recovery module are conventional settings of the raw coal separation system, and thus will not be described herein. In the embodiment, the concentrate product and the tailings product of the middling coal fine separation device are returned to the raw coal separation system for recovery through the conveying system. The conveying system further comprises a third conveying pump 56, a third conveying pipeline 55, a fourth conveying pump 57 and a fourth conveying pipeline 58. The third conveying pipeline 55 is in communication with the concentrate chamber 42 at one end and extends to the clean coal recovery module at the other end. The third conveying pump 56 is arranged on the third conveying pipeline 55 and used for conveying the concentrate product in the concentrate chamber 42 to the clean coal recovery module. The fourth conveying pipeline 58 is in communication with the tailings chamber 43 at one end and extends to the middling coal recovery module at the other end. The fourth conveying pump 57 is arranged on the fourth conveying pipeline 58 and used for conveying the tailings product in the tailings chamber 43 to the middling coal recovery module. The concentrate product and the tailings product are returned to the raw coal recovery system through the conveying system, which can better combine the middling coal fine separation device with the raw coal separation system and improve the economic benefit.
[0054] Preferably, in the embodiment, in order to facilitate arrangement, the first conveying pump 52, the second conveying pump 54, the third conveying pump 56 and the fourth conveying pump 57 are arranged side by side and located at one side of the concentrate chamber 42 and the tailings chamber 43 of the working pool 4, so as to improve the integrity of the middling coal fine separation device, make the structure more compact, facilitate arrangement, and facilitate maintenance of the four conveying pumps.
[0055] The middling coal fine separation device provided in the embodiment of the utility model, as shown in Figure 1 and Figure 2 The first conveying pump 52 is arranged on the first conveying pipeline 51. At least one of a densimeter, a magnetic substance detector and a pressure gauge is further arranged on the first conveying pipeline 51, which is used for detecting the separation parameters and avoiding affecting the middling coal reselection.
[0056] The utility model discloses another embodiment further provides a coal separation system, including the middling coal fine separation device described in any one of the above embodiments and raw coal separation system. The coal separation system provided in the embodiment can realize the middling coal reselection, recover the clean coal in the middling coal and has better economic benefit.
[0057] In the description of the utility model, it needs to be explained that the position or location relation indicated by the terms "upper", "lower" and the like is the position or location relation based on the position or location relation shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and thus cannot be understood as the limitation of the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0058] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, term "installation", "communication", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be direct communication, also can pass through intermediate medium indirectly communicates, can be two element inside communication.For ordinary skilled person in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.In addition, in the description of the utility model, unless otherwise stated, the meaning of "a plurality of" is two or more than two.
[0059] The above only is the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. A middlings fine separation device for middlings re-separation, wherein the middlings raw material comes from a raw coal separation system and contains middlings mixture; the raw coal separation system also contains clean coal mixture; Its features are, The fine coal sorting equipment includes: a screening device (1), a sorting device (2), a mixing chamber (41), a mixing chamber (44), and a conveying system; The screening device (1) includes a first screen assembly, which is used to demediate the medium of the coal raw material. The oversize material discharge end of the first screen assembly is connected to the mixing chamber (41), and the undersize material discharge end of the first screen assembly is connected to the mixing chamber (44). The conveying system is used to convey the material in the mixing chamber (44) and the refined coal mixing liquid to the mixing chamber (41), and to convey the material in the mixing chamber (41) to the sorting device (2).
2. The fine coal separation equipment according to claim 1, characterized in that, It also includes a crushing device (3); the screening device (1) also includes a second screen assembly; The second screen assembly is arranged sequentially with the first screen assembly. The screening particle size of the second screen assembly is larger than that of the first screen assembly. The material discharge end of the second screen assembly is connected to the crushing device (3), and the discharge end of the crushing device (3) is connected to the mixing chamber (41).
3. The fine coal separation equipment according to claim 2, characterized in that, It also includes a concentrate chamber (42) for storing the concentrate products of the sorting device (2) and a tailings chamber (43) for storing the tailings products of the sorting device (2).
4. The fine coal separation equipment according to claim 3, characterized in that, It also includes a work pool (4); The working pool (4) is provided with multiple partitions (45), which separate the mixing chamber (41), the mixing chamber (44), the concentrate chamber (42) and the tailings chamber (43) within the working pool (4).
5. The fine coal separation equipment according to claim 4, characterized in that, The concentrate chamber (42) and the tailings chamber (43) are adjacent to each other, and the upper ends of both the concentrate chamber (42) and the tailings chamber (43) are open. The sorting device (2) is located above the working pool (4), and the concentrate outlet of the sorting device (2) is located above the concentrate chamber (42), and the tailings outlet of the sorting device (2) is located above the tailings chamber (43).
6. The fine coal separation equipment according to claim 4, characterized in that, The mixing chamber (41) is provided with a first mounting component (46) at its upper end. The crushing device (3) is mounted on the first mounting component (46), and the discharge end of the crushing device (3) is located above the mixing chamber (41).
7. The fine coal separation equipment according to claim 6, characterized in that, The mixing chamber (44) and the mixing chamber (41) are adjacent to each other, and the upper end of the mixing chamber (44) is provided with a second mounting component (47). The screening device (1) is mounted on the second mounting component (47); the oversize material discharge end of the first screen assembly is located above the mixing chamber (41), and the undersize material discharge end of the first screen assembly is located above the mixing chamber (44); the oversize material discharge end of the second screen assembly is located above the feed end of the crushing device (3).
8. The fine coal separation equipment according to claim 3, characterized in that, The raw coal sorting system includes a clean coal recovery module and a middlings coal recovery module; The conveying system is also used to convey the material in the concentrate chamber (42) to the refined coal recovery module, and to convey the material in the tailings chamber (43) to the middlings recovery module.
9. The middlings fine separation equipment according to any one of claims 1 to 8, characterized in that, The conveying system includes a first conveying pump (52) and a first conveying pipeline (51); The two ends of the first conveying pipeline (51) are respectively connected to the mixing chamber (41) and the feed end of the sorting device (2); the first conveying pump (52) is installed on the first conveying pipeline (51); at least one of a density meter, a magnetic material detector and a pressure gauge is also installed on the first conveying pipeline (51).
10. A coal sorting system, characterized in that, Includes the fine coal separation equipment as described in any one of claims 1 to 9.