Middling coal separation equipment and coal separation system

Abstract

The utility model relates to the technical field of middling coal re-separation, in particular to middling coal separation equipment and a coal separation system. The utility model provides middling coal separation equipment which is used for middling coal re-separation, and middling coal raw materials contain middling coal blending medium liquid. The middling coal separation equipment comprises a medium drainage device, a mixing chamber, a conveying system and a separation device, the feeding end of the mixing chamber is communicated with the oversize material discharging end of the medium drainage device; and the conveying system is used for conveying the middling coal re-separation medium liquid into the material mixing chamber and conveying the materials in the material mixing chamber into the separation device. The middling coal separation equipment is combined with an original raw coal separation system to re-separate middling coal products of the raw coal separation system, clean coal in the middling coal products is recycled, scarce coal resources are fully utilized and protected, and huge economic benefits are created.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of middlings reselection, in particular to a middlings sorting equipment and coal sorting 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 sorting equipment and coal sorting 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 sorting equipment for reselecting and recovering fine coal from middlings and improving economic benefits. The utility model also provides a coal sorting system comprising the above-mentioned middlings sorting equipment.

[0004] In order to achieve the above-mentioned purpose, the utility model embodiment provides a middlings sorting equipment for reselecting middlings, wherein the middlings raw material comes from a raw coal sorting system, and the middlings raw material contains middlings reselection medium;

[0005] The middlings sorting equipment comprises a medium removal device, a mixing chamber, a conveying system and a sorting device.

[0006] The material inlet end of the mixing chamber is in communication with the sieve material outlet end of the medium removal device. The conveying system is used for conveying the middlings reselection medium into the mixing chamber and conveying the material in the mixing chamber into the sorting device.

[0007] Further, the middlings reselection medium comes from the raw coal sorting system. The conveying system is also used for conveying the middlings reselection medium from the raw coal sorting system into the mixing chamber.

[0008] Further, the middlings sorting equipment further comprises a crushing device.

[0009] The material inlet end of the crushing device is in communication with the sieve material outlet end of the medium removal device, and the material outlet end of the crushing device is in communication with the material inlet end of the mixing chamber.

[0010] Further, the middlings sorting equipment further comprises a concentrate chamber for storing the concentrate product of the sorting device and a tailing chamber for storing the tailing product of the sorting device.

[0011] Further, the raw coal sorting system comprises a fine coal recovery module and a middlings recovery module.

[0012] The conveying system is also used for conveying the material in the concentrate chamber to the clean coal recovery module and for conveying the material in the tailings chamber to the middlings recovery module.

[0013] Further, the middlings sorting device comprises a working pool;

[0014] The working pool is provided with a plurality of partitions, and the working pool is divided into the mixing chamber, the concentrate chamber and the tailings chamber by the partitions.

[0015] Further, the sorting device is located above the working pool;

[0016] The concentrate chamber and the tailings chamber are adjacent, and the upper ends of the concentrate chamber and the tailings chamber are open; the concentrate outlet of the sorting device is located above the concentrate chamber, and the tailings outlet of the sorting device is located above the tailings chamber.

[0017] Further, the upper end of the mixing chamber is provided with a first mounting member;

[0018] The crushing device is arranged on the first mounting member, and the discharging end of the crushing device is located above the mixing chamber.

[0019] Further, the medium removing device is arranged beside the crushing device, and the discharging end of the material on the screen of the medium removing device is located above the crushing device.

[0020] The utility model discloses another embodiment further provides a coal sorting system, including the middlings sorting device in any embodiment described above.

[0021] The utility model discloses beneficial effects:

[0022] The utility model provides a middlings sorting device for middlings reselection, and the middlings raw material comes from a raw coal sorting system, and the middlings raw material contains middlings medium liquid; the middlings sorting device comprises a medium removing device, a mixing chamber, a conveying system and a sorting device; the material inlet end of the mixing chamber is communicated with the material discharging end on the screen of the medium removing device; the conveying system is used for conveying the middlings reselection medium liquid to the mixing chamber and for conveying the material in the mixing chamber to the sorting device.

[0023] The middlings sorting device is combined with the original raw coal sorting system to reselect the middlings product of the raw coal sorting system, recovers the clean coal in the middlings product, fully utilizes the scarce coal resources and creates huge economic benefits. BRIEF DESCRIPTION OF DRAWINGS

[0024] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Fig. 1 A schematic diagram of the structure of the middlings coal sorting equipment provided in this embodiment of the utility model;

[0026] Fig. 2 A schematic diagram of the structure of a middlings coal sorting device from another perspective, provided for an embodiment of this utility model;

[0027] Fig. 3 A schematic diagram of the working pool provided in an embodiment of this utility model.

[0028] Icons: 1-Desliming device; 2-Sorting device; 3-Crushing device; 4-Working pool; 41-Mixing chamber; 42-Concentrate chamber; 43-Tailings chamber; 44-Baffle plate; 46-First mounting component; 51-First conveying pipeline; 52-First conveying pump; 53-Second conveying pipeline; 54-Second conveying pump; 55-Third conveying pipeline; 56-Third conveying pump. Detailed Implementation

[0029] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] like Figs. 1-3 As shown, one embodiment of this utility model provides a middlings separation device for middlings re-selection, wherein the middlings raw material contains middlings mixing liquid; the middlings separation device includes: a desizing device 1, a mixing chamber 41, a conveying system and a separation device 2; the inlet end of the mixing chamber 41 is connected to the outlet end of the oversize material of the desizing device 1; the conveying system is used to convey the middlings re-selection mixing liquid into the mixing chamber 41, and to convey the material in the mixing chamber 41 to the separation device 2.

[0031] The medium coal sorting device provided by the embodiment is used for re-sorting medium coal, wherein the medium coal raw material for the re-sorting of the medium coal is from a raw coal sorting system. The raw coal sorting system comprises a three-stage dense medium cyclone, a medium combining barrel, a clean coal recovery module, a medium coal recovery module and a gangue recovery module. After the raw coal is sorted by the three-stage dense 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 sorting device, and the medium coal products can be conveyed to the medium coal sorting device for re-sorting through a chute or the like to recover clean coal therein. The clean coal recovery module, the medium coal recovery module and the gangue recovery module are generally composed of an arc screen, a medium removing screen 1 and a centrifuge or the like and are used for medium removing and dewatering. Medium liquid obtained by removing the medium from the above three products is conveyed to the medium combining barrel for recovery and can be mixed with raw coal and conveyed to the three-stage dense medium cyclone for raw coal sorting.

[0032] The medium coal sorting device comprises a medium removing device 1, a mixing chamber 41, a conveying system and a sorting device 2. The medium coal products of the raw coal sorting system contain a large amount of medium coal medium liquid when being conveyed to the medium coal sorting device, the medium removing device 1 is used for removing the medium from the medium coal raw material to remove most of the medium coal medium liquid in the medium coal raw material and avoid that the content of the medium coal medium liquid in the medium coal raw material is too high to affect the subsequent re-sorting of the medium coal; the medium coal raw material is subjected to medium removing treatment by the medium removing device 1 to obtain re-sorting medium coal and medium coal medium liquid; the re-sorting medium coal is conveyed to the mixing chamber 41 as the material on the screen of the medium removing device 1 and is mixed with medium coal re-sorting medium liquid conveyed to the mixing chamber 41 by the conveying system in the mixing chamber 41; the mixed re-sorting medium coal and medium coal re-sorting medium liquid in the mixing chamber 41 are conveyed to the sorting device 2 by the conveying system to be sorted to obtain clean ore products and tailing products. The medium coal sorting device provided by the embodiment re-sorts the medium coal products of the original raw coal sorting system, recovers clean coal in the medium coal products, fully utilizes the scarce coal resources and creates huge economic benefits. Optionally, in the embodiment, the medium removing device 1 can be a linear vibrating screen, an arc screen or a high-frequency vibrating screen or the like, and the sorting device 2 is a cyclone.

[0033] Preferably, the medium coal re-sorting medium liquid is from the raw coal sorting system, and the conveying system is used for conveying the medium coal re-sorting medium liquid from the raw coal sorting system to the mixing chamber 41.

[0034] In the embodiment, the middlings medium liquid is the undersize material of the medium removal device 1, which is transported to the raw coal separation system through the conveying system described above, and is used to configure the medium liquid for raw coal separation, and is mixed with the clean medium liquid in the raw coal separation system to configure the middlings reseparation medium liquid, wherein the clean medium liquid is obtained by medium removal of the clean product; the middlings reseparation medium liquid is transported into the mixing chamber 41 through the conveying system, the reseparation middlings is mixed with the middlings reseparation medium liquid, and is transported to the separation device 2 by the conveying system for separation. The conveying system comprises a first conveying pump 52, a first conveying pipeline 51 and a middlings reseparation medium liquid conveying pipeline; one end of the middlings reseparation medium liquid conveying pipeline is in communication with the middlings reseparation medium liquid inlet of the mixing chamber 41, and the other end extends to the raw coal separation system; the middlings reseparation medium liquid configured in the raw coal separation system is transported into the mixing chamber 41 through the middlings reseparation medium liquid conveying pipeline from the middlings reseparation medium liquid inlet, and is mixed with the reseparation middlings in the mixing chamber 41; the two ends of the first conveying pipeline 51 are in communication with the mixing chamber 41 and the feeding end of the separation device 2 respectively, and the first conveying pump 52 is arranged on the first conveying pipeline 51 and pumps the reseparation middlings and the middlings reseparation medium liquid in the mixing chamber 41 to the separation device 2 for separation, and the clean concentrate product and the tailing product are obtained.

[0035] The middlings separation equipment provided by the embodiment of the utility model, as shown in the figure, Figs. 1-3 The middlings separation equipment further comprises a crushing device 3; the feeding end of the crushing device 3 is in communication with the oversize material discharging end of the medium removal device 1, and the discharging end of the crushing device 3 is in communication with the feeding end of the mixing chamber 41.

[0036] In the embodiment, the crushing device 3 is used for crushing the middlings raw material, and the crushing device 3 can be a vertical composite crusher. The reseparation middlings is obtained by crushing the middlings raw material through the crushing device 3, so that the separation of the separation device 2 is not affected by the too large particle size of the middlings raw material. In use, the middlings product of the raw coal separation system is transported to the medium removal device 1 through the chute for medium removal as the middlings raw material of the middlings separation equipment, the oversize material of the medium removal device 1 is transported to the crushing device 3 to obtain the reseparation middlings, the reseparation middlings is transported to the mixing chamber 41 to be mixed with the middlings reseparation medium liquid from the raw coal separation system, and finally the reseparation middlings is transported to the separation device 2 by the conveying system for separation to obtain the clean concentrate product and the tailing product.

[0037] Optionally, in the embodiment, the middlings separation equipment can further comprise a medium mixing chamber for storing the undersize material of the medium removal device 1, i.e. the middlings medium liquid, and the conveying system can transport the middlings medium liquid in the medium mixing chamber to the raw coal separation system through the conveying pipeline and the conveying pump. In the embodiment, the conveying pipeline and the material collecting hopper / tank can also be provided, and the material collecting hopper / tank is arranged at the undersize material discharging end of the medium removal device 1 and is used for collecting the middlings medium liquid. The middlings medium liquid can be transported to the raw coal separation system for recycling by the self-flowing mode.

[0038] The middlings sorting equipment provided in the embodiment of the present application comprises a working pool 4, a sorting device 2, a conveying system and a raw coal sorting system. Figs. 1-3 The middlings sorting equipment further comprises a concentrate chamber 42 for storing concentrate products of the sorting device 2 and a tailings chamber 43 for storing tailings products of the sorting device 2.

[0039] The above content mentions that the products of the reselected middlings after being sorted by the sorting device 2 are the concentrate products and the tailings products, the concentrate products are conveyed to the concentrate chamber 42 for storage, and the tailings products are conveyed to the tailings chamber 43 for storage; the concentrate products in the concentrate chamber 42 and the tailings products in the tailings chamber 43 are accumulated to a certain amount and then conveyed to the raw coal sorting system by the conveying system for recovery. The middlings sorting equipment is provided with the concentrate chamber 42 and the tailings chamber 43, so that the integrity of the equipment is stronger, the function is more perfect, and the intelligent control is facilitated.

[0040] The middlings sorting equipment provided in the embodiment of the present application comprises a working pool 4, a sorting device 2, a conveying system and a raw coal sorting system. Figs. 1-3 The raw coal sorting system comprises a clean coal recovery module and a middlings recovery module; the conveying system is further used for conveying the materials in the concentrate chamber 42 to the clean coal recovery module and conveying the materials in the tailings chamber 43 to the middlings recovery module.

[0041] The clean coal recovery module and the middlings recovery module are conventional settings of the raw coal sorting system, and thus will not be described herein. In the embodiment, the concentrate products and the tailings products of the middlings sorting equipment are returned to the raw coal sorting system for recovery by the conveying system. The conveying system further comprises a second conveying pump 54, a second conveying pipeline 53, a third conveying pump 56 and a third conveying pipeline 55; one end of the second conveying pipeline 53 is in communication with the concentrate chamber 42, the other end of the second conveying pipeline 53 extends to the clean coal recovery module, the second conveying pump 54 is arranged on the second conveying pipeline 53 and is used for conveying the concentrate products in the concentrate chamber 42 to the clean coal recovery module; one end of the third conveying pipeline 55 is in communication with the tailings chamber 43, the other end of the third conveying pipeline 55 extends to the middlings recovery module, the third conveying pump 56 is arranged on the third conveying pipeline 55 and is used for conveying the tailings products in the tailings chamber 43 to the middlings recovery module. The concentrate products and the tailings products are returned to the raw coal recovery system by the conveying system, so that the middlings sorting equipment and the raw coal sorting system can be combined better, and the economic benefit can be improved.

[0042] The middlings sorting equipment provided in the embodiment of the present application comprises a working pool 4, a sorting device 2, a conveying system and a raw coal sorting system. Figs. 1-3 The middlings sorting equipment comprises the working pool 4; a plurality of partitions 44 are arranged in the working pool 4, and the working pool 4 is divided into a mixing chamber 41, a concentrate chamber 42 and a tailings chamber 43 by the partitions 44.

[0043] Preferably, in the embodiment, the working pool 4 is provided with a partition plate 44 to divide the working pool 4 into multiple spaces, and each space is a mixing chamber 41, a concentrate chamber 42 and a tailings chamber 43. By setting the partition plate 44 in the working pool 4 to divide the mixing chamber 41, the concentrate chamber 42 and the tailings chamber 43, the middlings sorting device occupies a small space, has high integrity, is convenient to control and convenient to maintain and repair, etc. In the embodiment, the working pool 4 has a square structure, the concentrate chamber 42 and the tailings chamber 43 are located on one side, and the mixing chamber 41 is located on the other side, that is, the partition plate 44 has a "T" shape. In this way, the structure of the middlings sorting device is more compact, and the arrangement is more convenient. Alternatively, the mixing chamber 41, the concentrate chamber 42 and the tailings chamber 43 can also be arranged in a straight line. In this way, only three partition plates 44 are needed to be arranged in the working pool 4. It can be understood that in the embodiment, three independent barrel structures can also be provided as the mixing chamber 41, the concentrate chamber 42 and the tailings chamber 43.

[0044] The middlings sorting device provided by the embodiment of the utility model has the advantages that Figs. 1-3 As shown in the figure, the sorting device 2 is located above 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 open; 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 the embodiment, the concentrate chamber 42 and the tailings chamber 43 are arranged adjacent to each other in the working pool 4, the upper ends of the concentrate chamber 42 and the tailings chamber 43 are open, the sorting device 2 is arranged above the partition plate 44 between the concentrate chamber 42 and the tailings chamber 43, 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 product discharged from the concentrate outlet can directly enter the concentrate chamber 42, and the product discharged from the tailings outlet can directly enter the tailings chamber 43, without the need to set auxiliary structures such as a chute or a pipeline, so that the compactness of the middlings sorting device can be improved, the arrangement of the middlings sorting device is facilitated, and the overall cost is reduced.

[0046] The middlings sorting device provided by the embodiment of the utility model has the advantages that Figs. 1-3 As shown in the figure, the upper end of the mixing chamber 41 is provided with a first mounting piece 46; the crushing device 3 is arranged on the first mounting piece 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 piece 46, and the discharge end of the crushing device 3 is also located above the mixing chamber 41. In this way, the reselected middlings obtained by the crushing device 3 can directly enter the mixing chamber 41, without the need to set auxiliary structures such as a chute or a pipeline, so that the compactness of the middlings sorting device can be improved, the arrangement of the middlings sorting device is facilitated, and the overall cost is reduced.

[0048] Optionally, in the embodiment, the first mounting member 46 is in a plate structure, which is stable, 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 reselected combined medium when the middlings reselected by the crushing device 3 enters the mixing chamber 41. Of course, in the embodiment, the first mounting member 46 can also be in a beam or frame structure, which can also 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 middlings reselected 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 middlings reselected combined medium conveying pipeline, so as to inject the middlings reselected combined medium into the mixing chamber 41.

[0049] The middlings sorting device provided by the embodiment of the utility model is provided with the crushing device 3 and the de-medium device 1, and the de-medium device 1 is arranged on the first mounting member 46. Figs. 1-3 As shown in the figure, the de-medium device 1 is arranged beside the crushing device 3, and the sieve material discharge end of the de-medium device 1 is located above the crushing device 3.

[0050] In the embodiment, the de-medium device 1 is preferably arranged on the first mounting member 46, and the sieve material discharge end of the de-medium device 1 is located above the crushing device 3, so as to conveniently convey the sieve material of the de-medium device 1 into the crushing device 3.

[0051] Optionally, in the embodiment, when the middlings sorting device is provided with the above-mentioned combined medium chamber, the working pool 4 can also be divided into the combined medium chamber by the partition plate 44, and the combined medium chamber can be arranged below the de-medium device 1, so as to conveniently receive the middlings combined medium, and the first mounting member 46 in the plate structure also closes the open end of the combined medium chamber.

[0052] The utility model discloses still another embodiment provides a coal sorting system, including any one of the above-mentioned embodiments middlings sorting device and raw coal sorting system. The coal sorting system provided by the embodiment can realize the reselection of middlings, recover the clean coal in the middlings, and has better economic benefits.

[0053] In the description of the utility model, it needs to be explained that the position or location relationship indicated by the terms "upper", "lower" and the like is based on the position or location relationship shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, structure and operation, so it cannot be understood as a limitation on 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.

[0054] 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 internal 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.

[0055] 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 separation device for middlings re-cleaning, the middlings feedstock being from a raw coal separation system, the middlings feedstock containing middlings re-cleaning medium; characterized in that The middlings separation device comprises a medium removal device (1), a mixing chamber (41), a conveying system and a separation device (2); The inlet end of the mixing chamber (41) is in communication with the screen oversize material outlet end of the medium removal device (1); the conveying system is used for conveying the middlings re-cleaning medium into the mixing chamber (41), and for conveying the material in the mixing chamber (41) into the separation device (2).

2. The middlings separation plant of claim 1, wherein, The middlings re-cleaning medium is from the raw coal separation system; the conveying system is also used for conveying the middlings re-cleaning medium from the raw coal separation system into the mixing chamber (41).

3. The middlings separation plant of claim 1 or 2, wherein, The middlings separation device further comprises a crushing device (3); The inlet end of the crushing device (3) is in communication with the screen oversize material outlet end of the medium removal device (1), and the outlet end of the crushing device (3) is in communication with the inlet end of the mixing chamber (41).

4. The middlings separation plant of claim 3, wherein, The middlings separation device further comprises a concentrate chamber (42) for storing the concentrate product of the separation device (2) and a tailings chamber (43) for storing the tailings product of the separation device (2).

5. The middlings sorting plant of claim 4, wherein, The raw coal separation system comprises a clean coal recovery module and a middlings recovery module; The conveying system is also used for conveying the material in the concentrate chamber (42) into the clean coal recovery module, and for conveying the material in the tailings chamber (43) into the middlings recovery module.

6. The middlings sorting plant of claim 4, wherein, The middlings separation device comprises a working pool (4); The working pool (4) is provided with a plurality of partitions (44), and the mixing chamber (41), the concentrate chamber (42) and the tailings chamber (43) are separated by the partitions (44) in the working pool (4).

7. The middlings sorting plant of claim 6, wherein, The separation device (2) is located above 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 open; the concentrate outlet of the separation device (2) is located above the concentrate chamber (42), and the tailings outlet of the separation device (2) is located above the tailings chamber (43).

8. The middlings sorting plant of claim 7, wherein, 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 outlet end of the crushing device (3) is located above the mixing chamber (41).

9. The middlings sorting plant of claim 8, wherein, The medium removal device (1) is arranged beside the crushing device (3), and the screen oversize material outlet end of the medium removal device (1) is located above the crushing device (3).

10. A coal separation system characterised in that, The middlings separation device comprises the middlings separation device according to any one of claims 1 to 9.

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