High-efficiency media addition system for coal preparation plants
By introducing components such as desliming screens, dilute medium tanks, and qualified medium tanks into the coal preparation plant's media addition system, efficient media preparation in the coal preparation workshop is achieved, solving the problems of low media concentration and pipeline blockage, and improving production efficiency and resource utilization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ORDOS ZHONGYU TAIDE COAL CO LTD
- Filing Date
- 2025-06-03
- Publication Date
- 2026-05-26
AI Technical Summary
Existing coal preparation plant media addition systems suffer from several drawbacks: low media concentrations prevent direct use in production, necessitating prior concentration and causing production delays; pipeline transportation is prone to blockages requiring manual clearing, impacting normal operation; and low efficiency of magnetic separators leads to media waste.
The system employs components such as a desliming screen, a dilute medium tank, a qualified medium tank, a magnetic separator, and a sorting machine. It achieves proportional mixing of the medium through weighing and density detection, and the medium is prepared directly in the coal preparation workshop, reducing the operation process of the magnetic separator. The material is transported by a belt conveyor, avoiding pipeline blockage.
It increases the concentration of the medium to meet production requirements, reduces operational procedures, lowers the labor intensity of workers, reduces medium loss, and improves production efficiency and resource utilization.
Smart Images
Figure CN224271478U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of coal preparation technology, specifically to a high-efficiency medium addition system for coal preparation plants. Background Technology
[0002] Currently, the medium addition system in coal preparation plants involves workers using water from the medium storage tank to flush the medium into the medium pump pit in the coal preparation workshop. The medium is then pumped into the medium addition tank for mixing. Because the medium concentration is lower than that of the medium normally used for coal preparation, the medium mixed in the medium addition tank needs to be pumped into the dilute medium tank in the coal preparation plant workshop. Then, it is pumped into the magnetic separator for concentration by the dilute medium pump before flowing into the combined medium tank for coal preparation.
[0003] The following technical problems exist in this process:
[0004] 1. The prepared medium has a low concentration and does not meet the washing and screening requirements, so it cannot be used directly in production. It needs to be pumped into a dilute medium tank first and then concentrated by a magnetic separator, which causes the medium addition system to lag behind the production system.
[0005] 2. Because the medium storage is far from the coal preparation workshop, the medium transportation pipeline is a long distance away during the process of flushing the medium into the medium pump pit with water. The pipeline for transporting the medium often gets blocked, making it difficult to clear the pipeline and taking a long time, which affects the normal operation of the coal preparation plant.
[0006] 3. During the concentration process, since the magnetic separator does not reach 100% efficiency, the tailings contain residual media, which increases media loss and wastes resources. Utility Model Content
[0007] The purpose of this utility model is to provide a high-efficiency medium addition system for coal preparation plants.
[0008] This utility model is implemented by the following technical solution: a high-efficiency medium addition system for coal preparation plants, which includes a desliming screen, a dilute medium tank, a qualified medium tank, a magnetic separator, a separator, a medium silo, a support, a weighing hopper, a belt conveyor, a buffer hopper, and a medium distribution tank.
[0009] The low-density outlet of the desliming screen is connected to the inlet pipeline of the dilute medium tank, the outlet of the dilute medium tank is connected to the inlet pipeline of the magnetic separator, the outlet of the magnetic separator is connected to the inlet pipeline of the qualified medium tank, the outlet of the qualified medium tank is connected to the inlet pipeline of the separator, and the outlet of the separator is connected to the inlet pipeline of the desliming screen.
[0010] The media storage chamber is equipped with the support frame, which is connected to the weighing hopper via a weighing sensor. The outlet of the weighing hopper is connected to the inlet pipeline of the belt conveyor, the outlet of the belt conveyor is connected to the inlet pipeline of the buffer hopper, the outlet of the buffer hopper is connected to the powder inlet pipeline of the media mixing tank, the liquid inlet of the media mixing tank is connected to the low-density outlet pipeline of the desliming screen, and the outlet of the media mixing tank is connected to the inlet pipeline of the qualified media tank.
[0011] Furthermore, the high-concentration outlet of the desliming screen is connected to the inlet pipeline of the qualified medium tank.
[0012] Furthermore, the mixing tank and the qualified medium tank are each equipped with a first density meter.
[0013] Furthermore, the pipeline between the outlet of the qualified medium tank and the inlet of the sorting machine is sequentially equipped with a flow regulating valve, a circulating pump, a water supply pipeline, and a second density meter.
[0014] The advantages of this invention are as follows: Raw materials are weighed and fed into a mixing tank. A dilute medium is then mixed with the raw materials in a specific ratio, which can be achieved by controlling the flow rate and the weight of the raw materials. The raw materials and dilute medium are mixed in the mixing tank, and the density is measured using a first density meter. Once the density is within acceptable limits, the mixture is transferred to a qualified medium tank for later use. Compared to existing technologies, the on-site mixed medium does not require a magnetic separator, reducing the operational steps and meeting concentration and subsequent production speed requirements. Simultaneously, materials are transported to the coal preparation workshop via a belt conveyor, allowing for medium mixing in the workshop. This eliminates the need for manual unblocking of pipes, reducing worker workload. Furthermore, the on-site mixed medium does not undergo magnetic concentration, minimizing medium loss and resource waste. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the structure of the utility model;
[0017] In the diagram: 1. Desliming screen; 2. Dilute medium tank; 3. Magnetic separator; 4. Qualified medium tank; 5. Separator; 6. Medium silo; 7. Support; 8. Weighing sensor; 9. Weighing hopper; 10. Belt conveyor; 11. Buffer hopper; 12. Medium distribution tank; 13. First density meter; 14. Flow regulating valve; 15. Circulating pump; 16. Water supply pipeline; 17. Second density meter. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] like Figure 1 As shown, the high-efficiency medium addition system of the coal preparation plant includes a desliming screen 1, a dilute medium tank 2, a qualified medium tank 4, a magnetic separator 3, a separator 5, a medium silo 6, a support 7, a weighing hopper 9, a belt conveyor 10, a buffer hopper 11, and a medium distribution tank 12.
[0020] The low-density outlet of the desliming screen 1 is connected to the inlet pipeline of the dilute medium tank 2, the outlet of the dilute medium tank 2 is connected to the inlet pipeline of the magnetic separator 3, the outlet of the magnetic separator 3 is connected to the inlet pipeline of the qualified medium tank 4, the outlet of the qualified medium tank 4 is connected to the inlet pipeline of the separator 5, and the outlet of the separator 5 is connected to the inlet pipeline of the desliming screen 1. Compared with the prior art, the medium prepared from the medium library 6 needs to be sent to the magnetic separator 3 for concentration via the dilute medium tank 2. In this application, the workload of the magnetic separator 3 is reduced, which increases the working efficiency of the magnetic separator 3, reduces the loss of medium, and reduces the waste of resources.
[0021] The media storage 6 is equipped with a support frame 7. The support frame 7 is connected to a weighing hopper 9 via a weighing sensor 8. The outlet of the weighing hopper 9 is connected to the inlet pipeline of the belt conveyor 10. The outlet of the belt conveyor 10 is connected to the inlet pipeline of the buffer hopper 11. The outlet of the buffer hopper 11 is connected to the powder inlet pipeline of the media mixing tank 12. The liquid inlet of the media mixing tank 12 is connected to the low-density outlet pipeline of the desliming screen 1. The outlet of the media mixing tank 12 is connected to the inlet pipeline of the qualified media tank 4. After the raw materials are weighed, they are sent to the media mixing tank 12 and mixed with the raw materials in a corresponding proportion using a dilute medium. Specifically, the mixing ratio can be achieved by controlling the flow rate and the weight of the raw materials. The raw materials and dilute medium are mixed in the mixing tank 12, and the density is detected by the first density meter 13. After the density is qualified, it is sent to the qualified medium tank 4 for standby. Compared with the existing technology, the medium prepared on site does not need to go through the magnetic separator 3, which reduces the operation process, meets the concentration requirements, and meets the usage speed requirements of subsequent production. At the same time, the material is transported to the coal preparation workshop by the belt conveyor 10. The medium is prepared in the coal preparation workshop, which will not require manual unblocking due to pipeline blockage, thus reducing the labor intensity of workers.
[0022] The high-concentration outlet of the desliming screen 1 is connected to the inlet pipeline of the qualified medium tank 4, and the qualified medium is directly sent to the qualified medium tank 4 for use.
[0023] The mixing tank 12 and the qualified medium tank 4 are each equipped with a first density meter 13. The first density meter 13 is used to detect the concentration of the medium during use, so that the on-site operators can adjust it in real time according to the working conditions.
[0024] The pipeline between the outlet of the qualified medium tank 4 and the inlet of the separator 5 is sequentially equipped with a flow regulating valve 14, a circulating pump 15, a water supply pipeline 16, and a second density meter 17. The second density meter 17 is used to detect the concentration value of the medium during the transportation process. When the concentration value of the medium is higher than the production requirement, water is added through the water supply pipeline 16 to dilute the medium so that the medium concentration meets the requirements. Specifically, the water supply pipeline 16 is equipped with an electromagnetic flow valve. The location and number of other valves and pumps in the system can be selectively added and used by those skilled in the art according to different working conditions, so they will not be described in detail in this application.
[0025] The specific operation process of this embodiment is as follows:
[0026] After weighing the raw materials in the medium storage 6, they are sent to the mixing tank 12 via the belt conveyor 10 and the buffer hopper 11. In the mixing tank 12, the raw materials are mixed with the dilute medium in the corresponding proportion. The density is detected by the first density meter 13. After the density is qualified, it is sent to the qualified medium tank 4 for use.
[0027] The low-density medium from the desliming screen 1 is sent to the dilute medium tank 2, and then sent to the magnetic separator 3 for concentration. The medium concentrated by the magnetic separator 3 is sent to the qualified medium tank 4 for later use.
[0028] The high-concentration medium from the desliming screen 1 is sent to the qualified medium tank 4 for later use;
[0029] During use, the qualified medium tank 4 is sent to the sorting machine 5 through the circulation pump 15 after the density is tested. When the concentration is higher than the required value for production, the medium is diluted to the qualified concentration through the water addition pipeline 16.
[0030] After being sent to the separator 5, the medium is sent to the desliming screen 1 for desliming treatment after coal separation.
[0031] Repeat the above process.
[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A high-efficiency medium addition system for a coal preparation plant, characterized in that, It includes a desliming screen, a dilute medium tank, a qualified medium tank, a magnetic separator, a separator, a medium silo, a support frame, a weighing hopper, a belt conveyor, a buffer hopper, and a media mixing tank; The low-density outlet of the desliming screen is connected to the inlet pipeline of the dilute medium tank, the outlet of the dilute medium tank is connected to the inlet pipeline of the magnetic separator, the outlet of the magnetic separator is connected to the inlet pipeline of the qualified medium tank, the outlet of the qualified medium tank is connected to the inlet pipeline of the separator, and the outlet of the separator is connected to the inlet pipeline of the desliming screen. The media storage chamber is equipped with the support frame, which is connected to the weighing hopper via a weighing sensor. The outlet of the weighing hopper is connected to the inlet pipeline of the belt conveyor, the outlet of the belt conveyor is connected to the inlet pipeline of the buffer hopper, the outlet of the buffer hopper is connected to the powder inlet pipeline of the media mixing tank, the liquid inlet of the media mixing tank is connected to the low-density outlet pipeline of the desliming screen, and the outlet of the media mixing tank is connected to the inlet pipeline of the qualified media tank.
2. The high-efficiency medium addition system for coal preparation plants according to claim 1, characterized in that, The high-concentration outlet of the desliming screen is connected to the inlet pipeline of the qualified medium tank.
3. The high-efficiency medium addition system for coal preparation plants according to claim 2, characterized in that, The mixing tank and the qualified medium tank are each equipped with a first density meter.
4. The high-efficiency medium addition system for coal preparation plants according to claim 3, characterized in that, The pipeline between the outlet of the qualified medium tank and the inlet of the sorting machine is sequentially equipped with a flow regulating valve, a circulating pump, a water supply pipeline, and a second density meter.