A synergistic optimization method and device for fine coal desilication and upgrading

Abstract

The present application relates to the technical field of fine coal desliming and upgrading, and particularly relates to a fine coal desliming and upgrading method and device, which comprises the following upgrading steps: S1, adding fine coal into a treatment frame, and making a vibration table and a vibration rod vibrate at a high frequency; S2, electrifying an electrode, an electric shaft and an upper electrode plate, and spraying nitrogen to form a gas floating environment; S3, dust is shaken off by the combined action of vibration, gas floating and a push plate, and nitrogen is ionized by the electrode to generate plasma; S4, the plasma and metal dust are shot into a dust collection frame under the action of a Lorentz force; S5, air flow makes non-metallic dust charged, and the charged non-metallic dust is blown away from the treatment frame by the air flow; S6, high-density impurities sink to the bottom, and low-density fine coal passes through an inclined baffle plate to enter a storage frame to complete separation; and S7, the storage frame is opened to collect fine coal, and the dust collection frame and the treatment frame are cleaned of impurities. The present application loosens the attachments of coal particles by using a complex force field, efficiently removes dust by combining magnetism and electricity, circulates gas floating to save energy, dynamically separates to balance efficiency and energy consumption, and realizes sustainable desliming.

Description

Technical Field

[0001] This invention relates to the field of fine coal deashing and upgrading technology, and in particular to a synergistic optimization deashing and upgrading method and apparatus for fine coal. Background Technology

[0002] With the development and application of coal mining technology and methods, the quality of raw coal fluctuates greatly, and the content of high-ash, low-quality coal is increasing. Currently, the reserves of high-ash, low-quality coal are enormous, accounting for approximately 40% of total coal reserves. These mainly include lignite, long-flame coal, non-caking coal, and weakly caking coal, characterized by low metamorphism, high moisture content, and susceptibility to mud formation. During coal combustion, for every 10% increase in ash content, the calorific value decreases by 500 kcal / kg to 750 kcal / kg, and CO2 emissions increase by 5% to 15%. Coal deashing is a fundamental technology for clean coal, effectively removing ash and other impurities, improving coal quality, and promoting the transformation of coal resources from traditional fuels to clean fuels and high-quality raw materials.

[0003] Coal separation technology mainly consists of three categories: physical separation, chemical separation, and biological separation. Among them, physical separation, with its significant advantages such as high technological maturity, low equipment investment, and low operating costs, occupies more than 80% of the global coal preparation market share. However, traditional physical separation methods still have certain limitations. For example, the separation efficiency for fine coal particles (especially micron-sized particles) is relatively low, and incomplete stratification is easily caused by inter-particle adhesion or surface charge interference. Coal with similar densities is difficult to separate effectively from ash, resulting in high ash residue. At the same time, traditional bag filters or electrostatic precipitators have low collection efficiency for micron-sized metallic dust (such as pyrite particles), and the dust is prone to escape due to unstable electrical properties. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a synergistic optimization method and apparatus for deashing and upgrading fine-grained coal.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A synergistic optimization method for deashing and upgrading fine-grained coal includes the following upgrading steps:

[0007] S1. Add fine coal particles to the processing frame, start the drive motor, and make the vibrating table and vibrating rod work together to generate high-frequency vibration;

[0008] S2. Power is applied to the electrodes, electric shaft and upper plate, and high-speed nitrogen is injected at the same time. The nitrogen is ejected from the outlet through the inlet chamber to form an air flotation environment.

[0009] S3. Under the combined action of vibration, air flotation and pusher plate agitation, the dust on the surface of fine coal particles is shaken off, and at the same time, the electrodes ionize nitrogen to generate plasma.

[0010] S4. Plasma and metallic dust are accelerated into the dust collection frame under the action of Lorentz force generated by the electrodes, upper plate and Heilbeck array permanent magnets.

[0011] S5. The airflow caused by the movement of plasma and metallic dust charges the surface of non-metallic dust, which is then blown away from the processing frame by the airflow.

[0012] S6. Under the combined action of vibration, air flotation and push plate, high-density impurities sink to the bottom, and low-density fine coal passes over the inclined baffle with gradually changing height. It is guided by the inclined component force to move laterally to the storage frame, ensuring that all sorting is completed.

[0013] S7. Open the opening and closing door of the storage box to collect the ash-removed fine coal, and regularly clean the metal dust in the dust collection box and the high-density impurities at the bottom of the treatment box;

[0014] The aforementioned synergistic optimization deashing and upgrading method for fine-grained coal uses an upgrading device that includes an outer frame. An inclined mounting plate is rotatably installed inside the lower part of the outer frame. A processing frame with the same inclination angle and direction as the mounting plate is installed above the mounting plate. A vibration mechanism is installed between the processing frame and the mounting plate. A feed pipe communicating with the interior of the outer frame is fixedly installed on the front side of the outer frame. A nitrogen conveying mechanism is installed inside the lower part of the processing frame. Multiple inclined baffles are fixedly installed at equal intervals on the bottom wall inside the processing frame. An electromagnetic acceleration mechanism is installed inside the upper part of the processing frame.

[0015] Preferably, a support rod is fixedly connected to the bottom of one end of the mounting plate, the lower end of the support rod is rotatably connected to the bottom wall of the outer frame, and the other end of the mounting plate is rotatably connected to the inner side wall of the outer frame.

[0016] Preferably, the vibration mechanism includes two sets of triangular truncated pyramids fixedly installed on the front and rear sides of the upper end of the mounting plate. Each set of triangular truncated pyramids consists of two triangular truncated pyramids arranged symmetrically. A vibration rod is rotatably installed on each of the triangular truncated pyramids. The top end of the vibration rod is fixedly connected to the lower end of the processing frame. A vibration assembly is provided between the two triangular truncated pyramids on the side closer to the feed pipe.

[0017] Preferably, the vibration assembly includes a vibration table fixedly installed between two triangular pedestals. The vibration table is driven by a drive motor fixedly installed on one of the triangular pedestals. The upper end of the vibration table contacts the lower surface of the processing frame, and a buffer pad is provided between the two.

[0018] Preferably, the nitrogen delivery mechanism includes multiple air inlet chambers evenly distributed below the interior of the processing frame. One side of each air inlet chamber is closed, and the other side is connected to an air inlet pipe. The end of the air inlet pipe away from the air inlet chamber is connected to an external nitrogen delivery device after passing through the side wall of the outer frame. Multiple air outlets are evenly distributed between two adjacent inclined baffles on the bottom wall of the processing frame. The air outlets are connected to the interior of the corresponding air inlet chamber.

[0019] Preferably, the multiple inclined baffles are parallel to each other, and the height of each inclined baffle gradually decreases along the tilt direction of the processing frame.

[0020] Preferably, each of the inclined baffles has multiple electric rotating shafts rotatably mounted at equal intervals on its upper surface, and a push plate is fixedly connected to each electric rotating shaft.

[0021] Preferably, the electromagnetic acceleration mechanism includes an electrode fixedly connected to the top of the electric rotating shaft, an upper electrode plate fixedly installed inside the upper part of the outer frame, and fixed frames disposed on the upper left and right sides of the outer frame and fixedly installed on the inner sidewall of the outer frame. The two fixed frames are provided with permanent magnets arranged in a Halebeck array on the side that is close to each other.

[0022] Preferably, a dust collection frame for storing ejected metal dust is fixedly installed on the upper part of the rear side wall of the outer frame, and a discharge port communicating with the interior of the outer frame is fixedly installed on the lower part of the rear side wall of the outer frame. Impurities inside the processing frame leave the processing frame and enter the discharge port.

[0023] Preferably, a storage frame is fixedly installed on the side wall of the outer frame away from the air inlet chamber. The storage frame is connected to the upper part of the processing frame, so that fine coal particles enter the storage frame under the guidance of the inclined baffle.

[0024] Compared with the prior art, the advantages of the present invention are as follows:

[0025] 1. In this application, high-frequency vibration combined with air flotation disturbance and lateral mechanical agitation forms a composite force field, effectively loosening the surface deposits of coal particles and reducing inter-particle friction. The cooperation between the vibrating table and the vibrating rod generates high-frequency micro-amplitude vibration, promoting the stripping of dust from the coal particle surface; high-speed nitrogen injection forms an air flotation layer, which both lifts lightweight coal particles to the surface and enhances dust desorption through airflow shear force. The rotation and agitation of the pusher plate increases the diversity of coal particle movement trajectories, exposing more hidden surfaces and further improving the deashing effect. During density separation, the stratification effect generated by vibration, combined with the air flotation lifting force, causes low-density coal particles to float rapidly and separate through the dynamic separation channel, while high-density impurities sink to the bottom, achieving precise separation.

[0026] 2. In this application, the plasma generated by ionized nitrogen imparts an electric charge to metallic dust particles, which are then accelerated into the dust collection device under the combined action of Lorentz force and magnetic field, achieving efficient capture of metallic dust. Non-metallic dust migrates through a combination of airflow dynamics and electrostatic adsorption, with the electric field of the plates controlling the trajectory of charged particles, forming a multi-stage dust collection network. The closed-loop nitrogen circulation system ensures that dust is handled in a completely sealed manner throughout the process, preventing external pollution, while the permanent magnet array optimizes the magnetic field distribution, significantly enhancing dust collection efficiency.

[0027] 3. In this application, low-density coal particles respond rapidly to lateral forces in a combined vibration and air flotation field, achieving efficient separation along an oblique guide path, while high-density impurities settle to the bottom due to inertial differences. Vibration, plasma generation, and gas circulation modules work together to optimize energy consumption, and nitrogen is recycled after multiple filtrations, significantly reducing resource consumption. The overall process, through dynamic matching of sorting parameters, balances processing efficiency and energy utilization, achieving both intensive and sustainable sorting. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall isometric structure of a synergistic optimization deashing and upgrading device for fine-grained coal proposed in this invention.

[0029] Figure 2 This is a schematic diagram of the overall back structure of a synergistic optimization deashing and upgrading device for fine-grained coal proposed in this invention.

[0030] Figure 3 This is a schematic diagram of the internal structure of the outer frame of a synergistic optimization deashing and upgrading device for fine-grained coal proposed in this invention.

[0031] Figure 4 This is a schematic diagram of the mounting platform and support rod structure of a synergistic optimization deashing and upgrading device for fine-grained coal proposed in this invention.

[0032] Figure 5 This is a schematic diagram of the fixed frame and permanent magnet structure of a synergistic optimization deashing and upgrading device for fine coal proposed in this invention.

[0033] Figure 6 This is a schematic diagram of the air outlet and inclined baffle structure of a synergistic optimization deashing and upgrading device for fine coal proposed in this invention.

[0034] Figure 7 This is a schematic diagram of the pusher plate and electric rotating shaft structure of a synergistic optimization deashing and upgrading device for fine coal proposed in this invention.

[0035] In the diagram: 1 Outer frame, 2 Discharge port, 3 Dust collection frame, 4 Feed pipe, 5 Fixing frame, 6 Permanent magnet, 7 Air inlet pipe, 8 Storage frame, 9 Opening door, 10 Upper electrode plate, 11 Mounting plate, 12 Support rod, 13 Triangular platform, 14 Drive motor, 15 Vibration table, 16 Vibration rod, 17 Processing frame, 18 Air inlet chamber, 19 Air outlet, 20 Inclined baffle, 21 Electric rotating shaft, 22 Push plate, 23 Electrode. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0037] A synergistic optimization method for deashing and upgrading fine-grained coal includes the following steps:

[0038] S1. Add fine coal particles to the processing frame 17, start the drive motor 14, and make the vibration table 15 and the vibration rod 16 work together to generate high-frequency vibration.

[0039] S2. Power is supplied to electrode 23, electric shaft 21 and upper plate 10, and high-speed nitrogen gas is injected at the same time. The nitrogen gas is ejected from the outlet 19 through the air inlet 18 to form an air flotation environment.

[0040] S3. Under the combined action of vibration, air flotation and stirring of push plate 22, the dust on the surface of fine coal particles is shaken off, increasing the diversity of movement of fine coal particles and strengthening dust removal. At the same time, electrode 23 ionizes nitrogen to generate plasma.

[0041] S4. Plasma and metal dust are accelerated into the dust collection frame 3 under the action of Lorentz force generated by electrode 23, upper plate 10 and Heilbeck array permanent magnet 6.

[0042] S5. The airflow caused by the movement of plasma and metal dust charges the surface of non-metallic dust, which is then blown away from the processing frame 17 by the airflow.

[0043] S6. Under the combined action of vibration, air flotation and push plate 22, high-density impurities settle to the bottom, and low-density fine coal passes over the gradually changing inclined baffle 20 and is guided to move laterally to the storage frame 8 along the inclined component force, ensuring that all sorting is completed.

[0044] S7. Open the opening and closing door 9 of the storage frame 8 to collect the deashed fine coal particles, and regularly clean the metal dust in the dust collection frame 3 and the high-density impurities at the bottom of the treatment frame 17.

[0045] Reference Figures 1 to 7A co-optimized deashing and upgrading device for fine coal includes an outer frame 1. An inclined mounting plate 11 is rotatably installed inside the lower part of the outer frame 1. A support rod 12 is fixedly connected to the bottom of one end of the mounting plate 11. The lower end of the support rod 12 is rotatably connected to the bottom wall of the inner side of the outer frame 1. The other end of the mounting plate 11 is rotatably connected to the inner side wall of the outer frame 1, so that the operator can freely adjust the rotation angle of the mounting plate 11 and then lock it.

[0046] Two symmetrically arranged triangular pedestals 13 are fixedly installed on the front and rear sides of the upper end of the mounting plate 11. A vibration rod 16 is rotatably installed on each triangular pedestal 13. The tops of the multiple vibration rods 16 are fixedly installed on a processing frame 17. The tilt angle and direction of the processing frame 17 are basically consistent with those of the mounting plate 11. A drive motor 14 is fixedly installed on one of the triangular pedestals 13 located below the mounting plate 11. A vibration table 15 is fixedly installed between the two triangular pedestals 13. The vibration table 15 is driven by the aforementioned drive motor 14. The vibration table 15 is existing technology, and its specific structural design will not be described in detail here. Under the action of the drive motor 14, it can generate high-frequency vibration, thereby causing the processing frame 17 to have an upward shaking tendency. The upper end (i.e., the working end) of the vibration table 15 is in contact with the lower surface of the processing frame 17. In order to avoid rigid contact between the vibration table 15 and the processing frame 17, a buffer pad, shock-absorbing pad, etc. can be laid on the upper surface of the vibration table 15 to reduce the damage to the vibration table 15 and the processing frame 17 themselves.

[0047] Multiple air inlet chambers 18 are evenly spaced inside the lower part of the processing frame 17. One side of each air inlet chamber 18 is closed, and the other side is connected to an air inlet pipe 7. The air inlet pipe 7 is a flexible hose made of soft material. The other end of the air inlet pipe 7 passes through the side wall of the outer frame 1 and is connected to an external nitrogen delivery device. The external nitrogen delivery device can input nitrogen into the air inlet pipe 7 at high speed. Multiple inclined baffles 20 (as shown in the instruction manual) are fixedly installed at equal intervals on the bottom wall of the inner part of the processing frame 17. Figure 5 As shown), multiple inclined baffles 20 are parallel to each other, and the height of each inclined baffle 20 gradually decreases along the inclined direction of the processing frame 17. Multiple air outlets 19 are evenly arranged on the bottom wall of the inner wall of the processing frame 17 between two adjacent inclined baffles 20. The air outlets 19 are connected to the corresponding air inlet chambers 18, so that the high-speed nitrogen gas entering the air inlet chamber 18 can enter the upper part of the processing frame 17 through the air outlets 19.

[0048] Each inclined baffle 20 has multiple electrically driven shafts 21 rotatably mounted at equal intervals on its upper surface. Push plates 22 are fixedly connected to each of the electrically driven shafts 21, rotating with the shafts to assist in the lateral movement of the fine coal particles, increasing the diversity of their movement and allowing the airflow to better blow away dust from their surface. Electrodes 23 are fixedly connected to the top of each electrically driven shaft 21, used to ionize the nitrogen gas entering the upper part of the processing frame 17 to generate plasma. The processing frame 17 is equipped with... An upper electrode plate 10 is fixedly installed inside the upper part of the outer frame 1. Fixed frames 5 are fixedly installed on the inner side walls of the outer frame 1 on both the left and right sides of the outer frame 1. Permanent magnets 6 arranged in a Hellbeck array are set on the side of the two fixed frames 5 that are close to each other. The permanent magnets 6 cooperate with the electrodes 23 and the upper electrode plate 10, so that the plasma and metal dust can be accelerated under the action of Lorentz force and ejected forward quickly. A dust collection frame 3 is fixedly installed on the upper part of the rear side wall of the outer frame 1. The dust collection frame 3 is used to store the ejected metal dust.

[0049] A feed pipe 4, which communicates with the interior of the outer frame 1, is fixedly installed on the front side of the outer frame 1. The output end of the feed pipe 4 is located inside and above the processing frame 17. A storage frame 8 is fixedly installed on the side wall of the outer frame 1 away from the air inlet chamber 18. The storage frame 8 communicates with the interior and upper part of the processing frame 17, so that fine coal particles can enter the storage frame 8 under the guidance of the inclined baffle 20. An opening and closing door 9 is installed on one side of the storage frame 8 through a rotating shaft. An outlet 2, which communicates with the interior of the outer frame 1, is fixedly installed on the lower rear side wall of the outer frame 1. Impurities inside the processing frame 17 leave the processing frame 17 and enter the outlet 2.

[0050] When in use, the support rod 12 raises the mounting plate 11 at a certain angle to facilitate sorting within the processing frame 17. Fine coal particles are added to the processing frame 17 through the feed pipe 4. The drive motor 14 is started to make the vibrating table 15 start vibrating. In conjunction with the vibrating rod 16, which is mounted at a certain angle by the triangular platform 13, it performs high-frequency back-and-forth vibration, energizing the electrode 23, the electric rotating shaft 21, and the upper electrode plate 10. High-speed nitrogen gas is injected through the air inlet pipe 7.

[0051] After high-speed nitrogen enters the inlet chamber 18, it is ejected from the outlet 19. Under the high-frequency vibration of the processing frame 17 and the flotation effect of the air ejected from the outlet 19, the fine coal particles are sorted for impurities with higher density while dust is discharged.

[0052] Because the fine coal particles are vibrating at high frequency, the dust is shaken off, and the gas ejected from the bottom vent 19 further assists in the escape of the dust. The push plate 22 driven by the electric rotating shaft 21 rotates, which can also assist the fine coal particles in lateral movement, increasing the diversity of the movement of the fine coal particles and making it easier for the dust on the surface of the fine coal particles to be blown off by the airflow. When the dust is blown to the area between the upper electrode plate 10 and the processing frame 17, plasma is generated because the electrode 23 is always ionizing the nitrogen inside the device. The plasma and metal dust will be accelerated forward like an electromagnetic cannon under the action of the Lorentz force generated by the electrode 23, the upper electrode plate 10 and the permanent magnets 6 arranged in a Hellbeck array on both sides. In this way, the metal dust will be shot into the dust collection frame 3. At the same time, the movement of plasma and metal dust generates airflow, which can charge the surface of non-metallic dust. Driven by the airflow, the non-metallic dust will also be blown away, thus completing the deashing and upgrading of the surface of the fine coal particles.

[0053] Under the combined action of the vibration of the vibrating table 15, the air flotation of the air outlet 19, and the stirring of the pusher plate 22, the denser impurities will sink to the bottom, while the less dense fine coal particles will accumulate above the impurities. Soon, the less dense fine coal particles will exceed the height of the inclined baffle 20 and roll over it. The height of the inclined baffle 20 gradually decreases to ensure that all sorting can be completed in the rear section of the processing frame 17. When the inclined baffle 20 is installed at an angle, as the fine coal particles move along the inclined baffle 20, the less dense fine coal particles, due to their greater acceleration, respond more easily to the inclined guidance of the inclined baffle 20. Because the inclined baffle 20 will give the fine coal particles a lateral component force, the less dense fine coal particles can generate lateral displacement more quickly under the action of this lateral component force, allowing the fine coal particles to fall from the side into the storage frame 8, where they can be collected by opening the opening and closing door 9.

[0054] The gas entering the dust collection frame 3 from the outer frame 1 is processed by an external air treatment device, and the treated nitrogen is then introduced back into the air intake chamber 18 through the air intake pipe 7 for recycling.

[0055] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A synergistic optimization method for deashing and upgrading fine-grained coal, characterized in that, The following quality improvement steps are included: S1. Add fine coal particles into the processing frame (17), start the drive motor (14), and make the vibration table (15) and the vibration rod (16) work together to generate high-frequency vibration; S2. Power is supplied to the electrode (23), the electric shaft (21) and the upper plate (10), and high-speed nitrogen gas is injected at the same time. The nitrogen gas is ejected from the air outlet (19) through the air inlet chamber (18) to form an air flotation environment. S3. Under the combined action of vibration, air flotation and agitation by push plate (22), the dust on the surface of fine coal particles is shaken off, and at the same time, the electrode (23) ionizes nitrogen to generate plasma. S4. Plasma and metal dust are accelerated into the dust collection frame (3) under the action of Lorentz force generated by the electrode (23), the upper plate (10) and the Heilbeck array permanent magnet (6). S5. The airflow caused by the movement of plasma and metal dust charges the surface of non-metal dust, which is then blown away from the processing frame (17) by the airflow. S6. Under the combined action of vibration, air flotation and push plate (22), high-density impurities sink to the bottom, and low-density fine coal passes over the inclined baffle (20) with gradually changing height, and is guided to the storage frame (8) by the inclined component force to ensure that all sorting is completed. S7. Open the opening and closing door (9) of the storage box (8) to collect the deashed fine coal, and regularly clean the metal dust in the dust collection box (3) and the high-density impurities at the bottom of the processing box (17); The above-mentioned synergistic optimization deashing and upgrading method for fine coal uses an upgrading device in the upgrading process, which includes an outer frame (1). An inclined mounting plate (11) is rotatably installed inside the lower part of the outer frame (1). A processing frame (17) with the same inclination angle and direction is set above the mounting plate (11). A vibration mechanism is set between the processing frame (17) and the mounting plate (11). A feed pipe (4) communicating with the interior is fixedly installed on the front side of the outer frame (1). A nitrogen conveying mechanism is set inside the lower part of the processing frame (17). Multiple inclined baffles (20) are fixedly installed at equal intervals on the bottom wall of the processing frame (17). An electromagnetic acceleration mechanism is set inside the upper part of the processing frame (17). The vibration mechanism includes two sets of triangular truncated pyramids (13) fixedly installed on the front and rear sides of the upper end of the mounting plate (11). Each set of triangular truncated pyramids (13) consists of two triangular truncated pyramids (13) arranged symmetrically. A vibration rod (16) is rotatably installed on each of the triangular truncated pyramids (13). The top end of the vibration rod (16) is fixedly connected to the lower end of the processing frame (17). A vibration assembly is provided between the two triangular truncated pyramids (13) on the side near the feed pipe (4). The multiple inclined baffles (20) are parallel to each other, and the height of each inclined baffle (20) gradually decreases along the tilting direction of the processing frame (17); Each of the inclined baffles (20) has multiple electric rotating shafts (21) rotatably mounted at equal intervals on its upper surface, and a push plate (22) is fixedly connected to each electric rotating shaft (21). The electromagnetic acceleration mechanism includes an electrode (23) fixedly connected to the top of the electric rotating shaft (21), an upper electrode plate (10) fixedly installed inside the upper part of the outer frame (1), and a fixed frame (5) set on the upper left and right sides of the outer frame (1) and fixedly installed on the inner side wall of the outer frame (1). The two fixed frames (5) are provided with permanent magnets (6) arranged in a Heilbeck array on the side that is close to each other.

2. The method for synergistic optimization of deashing and upgrading fine-grained coal according to claim 1, characterized in that, The mounting plate (11) has a support rod (12) fixedly connected to one end of its bottom. The lower end of the support rod (12) is rotatably connected to the inner bottom wall of the outer frame (1), and the other end of the mounting plate (11) is rotatably connected to the inner side wall of the outer frame (1).

3. The method for synergistic optimization of deashing and upgrading fine-grained coal according to claim 1, characterized in that, The vibration assembly includes a vibration table (15) fixedly installed between two triangular frustums (13). The vibration table (15) is driven by a drive motor (14) fixedly installed on one of the triangular frustums (13). The upper end of the vibration table (15) contacts the lower surface of the processing frame (17), and a buffer pad is provided between the two.

4. The method for synergistic optimization of deashing and upgrading fine-grained coal according to claim 1, characterized in that, The nitrogen delivery mechanism includes multiple air inlet chambers (18) evenly arranged below the interior of the processing frame (17). One side of the air inlet chamber (18) is closed, and the other side is connected to an air inlet pipe (7). The end of the air inlet pipe (7) away from the air inlet chamber (18) is connected to an external nitrogen delivery device after passing through the side wall of the outer frame (1). Multiple air outlet holes (19) are evenly arranged between two adjacent inclined baffles (20) on the bottom wall of the inner wall of the processing frame (17). The air outlet holes (19) are connected to the interior of the corresponding air inlet chamber (18).

5. The method for synergistic optimization of deashing and upgrading fine-grained coal according to claim 1, characterized in that, A dust collection frame (3) for storing ejected metal dust is fixedly installed on the upper rear side wall of the outer frame (1), and a discharge port (2) communicating with its interior is fixedly installed on the lower rear side wall of the outer frame (1). Impurities inside the processing frame (17) leave the processing frame (17) and enter the discharge port (2).

6. The method for synergistic optimization of deashing and upgrading fine-grained coal according to claim 4, characterized in that, A storage frame (8) is fixedly installed on the side wall of the outer frame (1) away from the air inlet chamber (18). The storage frame (8) is connected to the upper part of the processing frame (17), so that fine coal particles enter the storage frame (8) under the guidance of the inclined baffle (20).

Images