Gangue dissociation separation and pulping filling system and method

Abstract

The invention discloses a gangue dissociation separation and pulping filling system and method in the technical field of coal mine separation layer filling, and the system comprises a pre-crushing system, a ball mill, a first material mixing pool, a first slurry pump and an authigenic medium hydrocyclone which are sequentially connected through a pipeline, a roughing coal slime discharging port of the authigenic medium hydrocyclone is sequentially connected with a second mixing pool and a second slurry pump, a gangue slurry discharging port of the authigenic medium hydrocyclone is connected with a clean coal flotation mechanism, and a feeding port of the clean coal flotation mechanism is connected with a discharging port of the second slurry pump and mine water at the same time. And a grouting liquid outlet of the clean coal flotation mechanism is connected with a coal mine separation layer filling space through a pipeline with a grouting pump. The coal gangue interface is effectively dissociated through the synergistic effect of pre-crushing, ball milling and the authigenic medium hydrocyclone, and the separation process of the clean coal flotation mechanism is combined, so that the clean coal recovery rate is remarkably increased, the waste of coal resources is reduced, and efficient utilization of the resources and deep recovery of the clean coal are realized.

Description

Technical Field

[0001] The invention relates to a gangue dissociation, sorting, slurrying and filling system and method, belonging to the technical field of coal mine separation layer filling. Background Art

[0002] Gangue generated during coal mining and washing is a typical solid waste, primarily composed of carbonaceous mudstone, sandstone, and residual clean coal. Traditionally, gangue is disposed of in open-air stockpiles or underground backfill. Open-air stockpiling not only encroaches on land resources but also creates dust pollution, groundwater contamination, and the risk of spontaneous combustion, violating green mine construction requirements. Direct underground backfilling of gangue wastes the residual clean coal contained within the gangue.

[0003] Gangue and coal particles often form a dense bond due to diagenesis, making it difficult for traditional separation equipment to effectively dissociate the gangue interface, resulting in reduced clean coal recovery and resource waste. Therefore, it is urgent to develop a synergistic process and equipment that combines gangue dissociation, deep clean coal recovery, and green gangue filling to fully utilize coal resources. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a gangue dissociation and sorting and slurry filling system and method, which can fully utilize coal resources through gangue dissociation, deep recovery of clean coal and green filling of gangue.

[0005] To achieve the above object, the present invention is implemented by adopting the following technical solutions: In the first aspect, the present invention provides a gangue dissociation, sorting and slurry filling system, comprising a pre-crushing system, a ball mill, a first mixing tank, a first slurry pump and an autogenous medium hydrocyclone connected in sequence through pipelines, the coarse coal slime discharge port of the autogenous medium hydrocyclone is connected in sequence to a second mixing tank and a second slurry pump, the gangue slurry discharge port of the autogenous medium hydrocyclone is connected to a clean coal flotation mechanism, the feed port of the clean coal flotation mechanism is simultaneously connected to the discharge port of the second slurry pump and mine water, and the grouting liquid discharge port of the clean coal flotation mechanism is connected to the coal mine abscission filling space through a pipeline with a grouting pump.

[0006] Furthermore, the clean coal flotation mechanism includes a flotation machine and a third mixing tank, the inlet of the flotation machine is connected to the discharge port of the second slurry pump, and the inlet of the third mixing tank is connected to the tailings discharge port of the flotation machine, the gangue slurry discharge port of the autogenous medium hydrocyclone and the mine water.

[0007] Furthermore, the clean coal flotation mechanism includes a divider and a flotation pulping machine, the feed port of the divider is connected to the discharge port of the second slurry pump, and the feed port of the flotation pulping machine is connected to the discharge port of the divider, the gangue slurry discharge port of the autogenous medium hydrocyclone and the mine water.

[0008] Furthermore, the divider includes a bottom plate, and an outer barrel and an inner barrel are provided on the bottom plate, a dish-shaped head is connected to the top of the outer barrel, and a feed pipe is provided in the center of the dish-shaped head, the bottom end of the feed pipe is located inside the inner barrel, the outer barrel, dish-shaped head, feed pipe and inner barrel are coaxial, and a plurality of discharge pipes are evenly provided on the side wall of the outer barrel, and the feed pipe and the discharge pipe are provided with flange interfaces away from the end of the outer barrel.

[0009] Furthermore, the flotation pulping machine includes a trough body, and an external overflow trough is welded on the top of the trough body. A steel frame is provided on the external overflow trough, and a frame is provided at the center of the steel frame. A reduction motor is fixedly connected through the frame, and the output end of the reduction motor is coaxially connected to a rotating impeller through a coupling. A plurality of mineralizers are arranged circumferentially around the axis of the trough body on the steel frame.

[0010] Furthermore, the trough body includes a straight barrel section and a conical barrel section, an umbrella cone is coaxially arranged in the straight barrel section, and the umbrella cone is connected to the conical barrel section through multiple steel pipes. The inner wall of the straight barrel section is provided with multiple spoilers, and the spoilers are located below the umbrella cones. The side wall of the conical barrel section is provided with an ore feeding pipe and an ore discharging pipe, and the ore feeding pipe is positioned higher than the ore discharging pipe, and the ends of the ore feeding pipe and the ore discharging pipe are both provided with flanges.

[0011] Furthermore, the umbrella cone includes a ring cone and a sieve plate. The sieve plate is annular and has multiple circular through holes on its surface. The outer ring edge of the sieve plate is connected to the straight barrel section, and the inner ring edge of the sieve plate is connected to the ring cone.

[0012] Furthermore, the mineralizer includes a straight pipe section, a contraction section, a maintenance section, an expansion section and a development section connected in sequence, the straight pipe section, the maintenance section and the development section are cylindrical steel pipes, the contraction section and the expansion section are conical steel pipes, a flange is provided on the top of the straight pipe section, a spherical steel plate is connected to the inner wall of the straight pipe section, a plurality of circular holes are opened on the spherical steel plate, and nozzles are embedded in the circular holes, an air inlet pipe is provided on the side wall of the contraction section, and a jet pipe is connected to the air inlet pipe, a dosing pipe is provided on the side wall of the air inlet pipe, the outer wall of the maintenance section is connected to a circular flange through a plurality of ribs, the axis of the nozzle intersects at point, the point is located on the axis of the contraction section, and the steel frame is connected to the circular flange by bolts.

[0013] Furthermore, the mineralizer is located above the umbrella cone, the rotating impeller is located below the umbrella cone, a bearing is provided in the frame, the external overflow trough is provided with a concentrate pipe, and the outer end of the concentrate pipe is provided with a flange interface, the number of the mineralizers is the same as the number of the discharge pipes, the coal slurry is fed into the flotation pulping machine through the mineralizer, and the gangue slurry and mine water are fed into the flotation pulping machine through the feeding pipe.

[0014] In a second aspect, the present invention provides a method for separating and sorting waste rock and preparing a pulp and filling system, based on the above waste rock separating and sorting system and preparing a pulp and filling system, comprising: The gangue raw materials are fed into the pre-crushing system and crushed to a particle size of less than 10mm, and then fed into the ball mill; After being crushed to a particle size of less than 1 mm by a ball mill, the material is fed into the first mixing tank; The materials with particle size less than 1mm in the first mixing tank are fed into the autogenous medium hydrocyclone through the first slurry pump for separation to obtain rough coal slime and gangue slurry, and the rough coal slime is fed into the second mixing tank; The coarse coal sludge in the second mixing tank is fed into the clean coal flotation mechanism through the second slurry pump; The gangue slurry and mine water are fed into the clean coal flotation mechanism to obtain clean coal and grouting liquid through sorting; The grouting liquid is transported to the coal mine separation filling space through a grouting pump.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This solution effectively dissociates the coal gangue interface through the synergistic effects of pre-crushing, ball milling, and autogenous medium hydrocyclones, solving the separation difficulties caused by the dense bonding of coal gangue in traditional equipment. Combined with the separation process of the clean coal flotation mechanism, it significantly improves the clean coal recovery rate, reduces coal resource waste, and achieves efficient resource utilization and deep recovery of clean coal. Second, this solution mixes the sorted gangue slurry with tailings and mine water to form a grouting liquid, which is used to fill the separation space in coal mines. This avoids the land encroachment, dust pollution, groundwater pollution and spontaneous combustion risks caused by traditional open-air storage, meets the requirements of green mine construction, and realizes green gangue treatment. 3. This solution offers two optional paths: Process 1 (flotation machine separation + mixed pulping) and Process 2 (flotation pulping machine integrated separation and pulping). These paths can be flexibly adjusted according to actual needs, taking into account the efficient coordination of clean coal recovery and gangue filling, thereby improving process flexibility and coordination. 4. This solution uses a coaxial outer barrel, inner barrel and evenly distributed discharge pipe design in the divider to achieve uniform diversion of the coarse coal slime and ensure the stability of subsequent processing; the flotation pulping machine integrates umbrella cones, spoilers, mineralizers and other structures to optimize the material flow and reagent contact environment, and enhance the sorting effect; the mineralizer's contraction-expansion section design and coaxial nozzle layout increase the probability of collision between bubbles and coal particles, further improving the clean coal recovery efficiency; the grouting liquid pipeline is equipped with a density meter and a mine water pipeline flow regulating valve. By dynamically adjusting the mine water flow, the density of the grouting liquid is accurately controlled to ensure the uniformity and stability of the filling slurry and the coal mine delamination filling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings: Figure 1 A schematic diagram of the process flow of a gangue dissociation, sorting, slurrying and filling system provided in Example 1 of the present invention; Figure 2 A schematic diagram of the process flow of a gangue dissociation, separation, slurrying and filling system provided in the second embodiment of the present invention; Figure 3 A schematic structural diagram of a divider for a gangue separation, sorting, slurry filling system provided in the second embodiment of the present invention; Figure 4 A schematic structural diagram of a flotation and pulping integrated machine for a gangue dissociation, sorting, pulping and filling system provided in the second embodiment of the present invention; Figure 5 A schematic diagram of the tank structure of a flotation pulping integrated machine of a gangue dissociation, sorting, pulping and filling system provided in the second embodiment of the present invention; Figure 6 A schematic structural diagram of a mineralizer of a flotation and pulping integrated machine of a gangue dissociation, sorting, pulping and filling system provided in the second embodiment of the present invention; Figure 7 A schematic diagram of the umbrella-cone structure of a flotation pulping integrated machine of a gangue dissociation, sorting, pulping and filling system provided in the second embodiment of the present invention; Figure 8 A schematic diagram of the spherical steel plate structure of a flotation and pulping integrated machine of a gangue dissociation, sorting, pulping and filling system provided in the second embodiment of the present invention; Figure 9 A partial schematic diagram of a mineralizer of a flotation and pulping integrated machine of a gangue dissociation, sorting, pulping and filling system provided in the second embodiment of the present invention.

[0017] In the figure: 1. Pre-crushing system; 2. Ball mill; 3. First mixing tank; 4. First slurry pump; 5. Autogenous medium hydrocyclone; 6. Second mixing tank; 7. Second slurry pump; 8. Flotation machine; 9. Third mixing tank; 10. Grouting pump; 11. Equalizer; 111. Outer barrel; 112. Dish head; 113. Inlet pipe; 114. Inner barrel; 115. Outlet pipe; 116. Bottom plate; 12. Flotation pulping machine; 121. Tank; 12101. Straight barrel section; 12102. Cone barrel section; 12103. Feed pipe; 12104. Spoiler; 12105. Outlet pipe; 12106. Steel pipe; 12107. Umbrella cone; 1210701. Ring cone; 1 210702, sieve plate; 122, overflow chute; 12201, concentrate pipe; 123, frame; 124, reduction motor; 125, coupling; 126, rotating impeller; 127, steel frame; 128, mineralizer; 12801, straight pipe section; 12802, contraction section; 1280201, axis; 12803, maintenance section; 12804, expansion section; 12805, development section; 12806, spherical steel plate; 1280601, circular hole; 12807, nozzle; 1280701, intersection; 12808, air inlet pipe; 12809, jet pipe; 128010, dosing pipe; 128011, rib plate; 128012, annular flange. DETAILED DESCRIPTION

[0018] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other.

[0019] The following detailed description is an exemplary description and is intended to provide further detailed description of the present invention. Unless otherwise indicated, all technical terms used in the present invention have the same meaning as those generally understood by those skilled in the art to which the present invention belongs. The terms used in the present invention are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention.

[0020] Example 1: See also Figure 1This embodiment provides a gangue dissociation, sorting and slurry filling system, including: a pre-crushing system 1, a ball mill 2, a first mixing tank 3, a first slurry pump 4, an autogenous medium hydrocyclone 5, a second mixing tank 6, a second slurry pump 7, a flotation machine 8, a third mixing tank 9 and a grouting pump 10, wherein: the gangue raw material is fed into the pre-crushing system 1 and crushed to a particle size of less than 10mm, the material with a particle size of less than 10mm is fed into the ball mill 2 and crushed to a particle size of less than 1mm, and the material with a particle size of less than 1mm is fed into the flotation machine 1. The coal enters the first mixing tank 3. The materials with a particle size of less than 1 mm in the first mixing tank 3 are fed into the autogenous medium hydrocyclone 5 through the first slurry pump 4 for sorting to obtain coarse coal slime and gangue slurry. The coarse coal slime is fed into the second mixing tank 6. The coarse coal slime in the second mixing tank 6 is fed into the flotation machine 8 through the second slurry pump 7 to obtain clean coal and tailings. The tailings, gangue slurry and mine water are fed into the third mixing tank 9 to be mixed to form grouting liquid. The grouting liquid is fed into the grouting pump 10 and transported to the coal mine separation layer filling space. It should be noted that the grouting liquid pipeline is equipped with a density meter and the mine water pipeline is equipped with a flow regulating valve. When the density count value is lower than the set density, the flow regulating valve is adjusted to a smaller value. When the density count value is higher than the set density, the flow regulating valve is adjusted to a larger value.

[0021] Example 2: See also Figure 2 This embodiment provides a gangue dissociation, sorting and slurry filling system, including: a pre-crushing system 1, a ball mill 2, a first mixing tank 3, a first slurry pump 4, an autogenous medium hydrocyclone 5, a second mixing tank 6, a second slurry pump 7, a divider 11, a flotation pulping integrated machine 12 and a grouting pump 10, wherein: the gangue raw material is fed into the pre-crushing system 1 and crushed to a particle size of less than 10 mm, the material with a particle size of less than 10 mm is fed into the ball mill 2 and crushed to less than 1 mm, and the material with a particle size of less than 1 mm is fed into the first mixing tank 3. The materials with a particle size of less than 1 mm in the first mixing tank 3 are fed into the autogenous medium hydrocyclone 5 through the first slurry pump 4 for sorting to obtain rough coal slime and gangue slurry. The rough coal slime is fed into the second mixing tank 6. The rough coal slime in the second mixing tank 6 is fed into the equalizer 11 through the second slurry pump 7. The equalizer 11 divides the rough coal slime into multiple streams of coal slurry. The coal slurry, gangue slurry and mine water are fed into the flotation pulping integrated machine 12 for sorting to obtain clean coal and grouting liquid. The grouting liquid is fed into the grouting pump 10 and transported to the coal mine separation layer filling space.

[0022] See also Figure 3 In this embodiment, the divider 11 includes a base plate 116, on which an outer barrel 111 and an inner barrel 114 are mounted. A dished head 112 is connected to the top of the outer barrel 111. An inlet pipe 113 is located in the center of the dished head 112. The bottom end of the inlet pipe 113 is located inside the inner barrel 114. The outer barrel 111, dished head 112, inlet pipe 113, and inner barrel 114 are coaxial. Several outlet pipes 115 are evenly distributed on the sidewalls of the outer barrel 111. The inlet and outlet pipes 113 and 115 are equipped with flange interfaces at their ends away from the outer barrel 111.

[0023] See also Figures 4 to 9 The flotation pulping machine 12 includes a trough body 121, an external overflow trough 122 is welded to the top of the trough body 121, a steel frame 127 is provided on the external overflow trough 122, a frame 123 is provided at the center of the steel frame 127, a reduction motor 124 is fixedly connected through the frame 123, and the output end of the reduction motor 124 is coaxially connected to the rotating impeller 126 through a coupling 125, and a number of mineralizers 128 are provided on the steel frame 127, and the mineralizers 128 are arranged circumferentially around the axis of the trough body 121. The trough body 121 includes a straight barrel section 12101 and a conical barrel section 12102. An umbrella cone 12107 is coaxially provided in the straight barrel section 12101. The umbrella cone 12107 is connected to the conical barrel section 12102 through several steel pipes 12106. Several spoilers 12104 are provided on the inner wall of the straight barrel section 12101. The spoiler 12104 is located below the umbrella cone 12107. The side wall of the conical barrel section 12102 is provided with a feeding pipe 12103 and an ore discharge pipe 12105. The feeding pipe 12103 is positioned higher than the ore discharge pipe 12105, and flanges are provided at the ends of the feeding pipe 12103 and the ore discharge pipe 12105.

[0024] The umbrella cone 12107 includes a ring cone 1210701 and a sieve plate 1210702. The sieve plate 1210702 is annular and has multiple circular through holes on its surface. The outer ring edge of the sieve plate 1210702 is connected to the straight barrel section 12101, and the inner ring edge of the sieve plate 1210702 is connected to the ring cone 1210701. The mineralizer 128 includes a straight pipe section 12801, a contraction section 12802, a maintenance section 12803, an expansion section 12804, and a development section 12805, which are connected in sequence. The straight pipe section 12801, the maintenance section 12803, and the development section 12805 are cylindrical steel pipes, and the contraction section 12802 and the expansion section 12804 are conical steel pipes. The top of the straight pipe section 12801 is provided with a flange, and the inner wall of the straight pipe section 12801 is connected to the spherical steel plate 12805. 806. Spherical steel plate 12806 is provided with several circular holes 1280601, each of which houses a nozzle 12807. An air inlet pipe 12808 is located on the sidewall of the converging section 12802, connected to a jet pipe 12809. A dosing pipe 128010 is also located on the sidewall of the converging section 12808. The outer wall of the maintaining section 12803 is connected to an annular flange 128012 via several ribs 128011. The axis of the nozzle 12807 intersects at point 1280701, which lies on the axis 1280201 of the converging section 12802. Steel frame 127 is bolted to the annular flange 128012. The mineralizer 128 is located above the cone 12107, and the rotating impeller 126 is located below the cone 12107. Bearings are installed within the frame 123. The external overflow trough 122 is equipped with a concentrate pipe 12201, with a flange interface at the outer end. The number of mineralizers 128 is the same as the number of discharge pipes 115. Coal slurry is fed into the flotation and pulping machine 12 through the mineralizers 128, while gangue slurry and mine water are fed into the flotation and pulping machine 12 through the feed pipe 12103.

[0025] Compared with the existing technology, this technical solution has the following improvements: 1. Through the synergistic effect of pre-crushing, ball milling and autogenous medium hydrocyclone, the coal gangue interface is effectively dissociated, solving the sorting problem caused by the dense combination of coal gangue in traditional equipment; combined with the sorting process of flotation machine or flotation pulping machine, the clean coal recovery rate is significantly improved, the waste of coal resources is reduced, and efficient resource utilization and deep recovery of clean coal are achieved.

[0026] 2. The sorted gangue slurry is mixed with tailings and mine water to make grouting liquid, which is used to fill the delamination space in coal mines. This avoids the land encroachment, dust pollution, groundwater pollution and spontaneous combustion risks caused by traditional open-air storage, meets the requirements of green mine construction, and realizes green treatment of gangue.

[0027] 3. Two optional paths are provided: Process 1 (flotation machine sorting + mixed pulping) and Process 2 (flotation pulping machine integrated sorting and pulping). These can be flexibly adjusted according to actual needs, taking into account the efficient coordination of clean coal recovery and gangue filling, thereby improving process flexibility and coordination.

[0028] Fourth, the equalizer is designed with coaxial outer barrel, inner barrel and evenly distributed discharge pipes to achieve uniform diversion of coarse coal slime, ensuring the stability of subsequent processing; the flotation pulping machine integrates umbrella cone, spoiler, mineralizer and other structures to optimize the material flow and reagent contact environment, and enhance the sorting effect; the contraction-expansion section design and coaxial layout of the mineralizer increase the probability of collision between bubbles and coal particles, further improving the recovery efficiency of clean coal; the grouting liquid pipeline is equipped with a density meter and a mine water pipeline flow regulating valve. By dynamically adjusting the mine water flow, the density of the grouting liquid is accurately controlled to ensure the uniformity and stability of the filling slurry and the filling effect of the coal mine delamination.

[0029] In summary, this process and equipment achieve the synergistic goals of gangue dissociation, deep recovery of clean coal and green filling of gangue, and has significant advantages in efficient resource utilization, environmental protection and mine safety.

[0030] It is understood from common technical knowledge that the present invention may be implemented by other embodiments that do not depart from its spirit or essential features. Therefore, the embodiments disclosed above are, in all respects, merely illustrative and not exclusive. All modifications within the scope of the present invention or equivalent to the scope of the present invention are intended to be encompassed by the present invention.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of protection of the claims of the present invention.

Claims

1. A gangue dissociation, sorting and slurry filling system, characterized by: The invention comprises a pre-crushing system (1), a ball mill (2), a first mixing tank (3), a first slurry pump (4) and an autogenous medium hydrocyclone (5) which are sequentially connected via pipelines, wherein the coarse coal slime discharge port of the autogenous medium hydrocyclone (5) is sequentially connected to a second mixing tank (6) and a second slurry pump (7), the gangue slurry discharge port of the autogenous medium hydrocyclone (5) is connected to a clean coal flotation mechanism, the feed port of the clean coal flotation mechanism is simultaneously connected to the discharge port of the second slurry pump (7) and mine water, and the grouting liquid discharge port of the clean coal flotation mechanism is connected to the coal mine separation layer filling space via a pipeline with a grouting pump (10).

2. The gangue dissociation, sorting and slurry filling system according to claim 1 is characterized in that: The clean coal flotation mechanism comprises a flotation machine (8) and a third mixing tank (9), wherein the feed port of the flotation machine (8) is connected to the discharge port of the second slurry pump (7), and the feed port of the third mixing tank (9) is connected to the tailings discharge port of the flotation machine (8), the gangue slurry discharge port of the autogenous medium hydrocyclone (5), and mine water.

3. The gangue dissociation, sorting and slurry filling system according to claim 1 is characterized in that: The clean coal flotation mechanism comprises an equalizer (11) and a flotation pulping integrated machine (12), wherein the feed port of the equalizer (11) is connected to the discharge port of the second slurry pump (7), and the feed port of the flotation pulping integrated machine (12) is connected to the discharge port of the equalizer (11), the gangue slurry discharge port of the autogenous medium hydrocyclone (5), and mine water.

4. The gangue dissociation, sorting and slurry filling system according to claim 3 is characterized in that: The divider (11) includes a bottom plate (116), and an outer barrel (111) and an inner barrel (114) are provided on the bottom plate (116); a dish-shaped head (112) is connected to the top of the outer barrel (111), and a feed pipe (113) is provided at the center of the dish-shaped head (112); the bottom end of the feed pipe (113) is located inside the inner barrel (114); the outer barrel (111), the dish-shaped head (112), the feed pipe (113) and the inner barrel (114) are coaxial; a plurality of discharge pipes (115) are evenly provided on the side wall of the outer barrel (111), and flange interfaces are provided at the ends of the feed pipe (113) and the discharge pipe (115) away from the outer barrel (111).

5. The gangue dissociation, sorting and slurry filling system according to claim 4 is characterized in that: The flotation pulping integrated machine (12) comprises a tank body (121), and an external overflow tank (122) is welded to the top of the tank body (121), a steel frame (127) is provided on the external overflow tank (122), and a frame (123) is provided at the center of the steel frame (127), a reduction motor (124) is fixedly connected through the frame (123), and the output end of the reduction motor (124) is coaxially connected to a rotating impeller (126) through a coupling (125), and a plurality of mineralizers (128) are arranged circumferentially around the axis of the tank body (121) on the steel frame (127).

6. The gangue dissociation, sorting and slurry filling system according to claim 5 is characterized in that: The trough body (121) comprises a straight barrel section (12101) and a conical barrel section (12102); an umbrella cone (12107) is coaxially provided in the straight barrel section (12101); the umbrella cone (12107) is connected to the conical barrel section (12102) via a plurality of steel pipes (12106); a plurality of spoilers (12104) are provided on the inner wall of the straight barrel section (12101), and the spoilers (12104) are located below the umbrella cone (12107); a feed pipe (12103) and an ore discharge pipe (12105) are provided on the side wall of the conical barrel section (12102); the feed pipe (12103) is located higher than the ore discharge pipe (12105); and flanges are provided at the ends of the feed pipe (12103) and the ore discharge pipe (12105).

7. The gangue separation, sorting and slurry filling system according to claim 6 is characterized in that: The umbrella cone (12107) includes a ring cone (1210701) and a sieve plate (1210702). The sieve plate (1210702) is annular and has a plurality of circular through holes on its surface. The outer ring edge of the sieve plate (1210702) is connected to the straight barrel section (12101), and the inner ring edge of the sieve plate (1210702) is connected to the ring cone (1210701).

8. The gangue dissociation, sorting and slurry filling system according to claim 7 is characterized in that: The mineralizer (128) includes a straight pipe section (12801), a contraction section (12802), a maintenance section (12803), an expansion section (12804) and a development section (12805) connected in sequence, wherein the straight pipe section (12801), the maintenance section (12803) and the development section (12805) are cylindrical steel pipes, the contraction section (12802) and the expansion section (12804) are conical steel pipes, a flange is provided on the top of the straight pipe section (12801), a spherical steel plate (12806) is connected to the inner wall of the straight pipe section (12801), and the spherical steel plate (12806) is provided with a plurality of circular holes (1280601), and the circular holes (1280601) are provided with a plurality of circular holes (1280601). ) is embedded with a nozzle (12807), the side wall of the contraction section (12802) is provided with an air inlet pipe (12808), and the air inlet pipe (12808) is connected with a jet pipe (12809), the side wall of the air inlet pipe (12808) is provided with a dosing pipe (128010), the outer wall of the maintaining section (12803) is connected with a circular flange (128012) through a plurality of ribs (128011), the axis of the nozzle (12807) intersects at a point (1280701), and the point (1280701) is located on the axis (1280201) of the contraction section (12802), and the steel frame (127) is connected to the circular flange (128012) by bolts.

9. The gangue dissociation, sorting and slurry filling system according to claim 8 is characterized in that: The mineralizer (128) is located above the umbrella cone (12107), the rotating impeller (126) is located below the umbrella cone (12107), a bearing is provided in the frame (123), the external overflow trough (122) is provided with a concentrate pipe (12201), and the outer end of the concentrate pipe (12201) is provided with a flange interface, the number of the mineralizers (128) is the same as the number of the discharge pipes (115), the coal slurry is fed into the flotation pulping integrated machine (12) through the mineralizer (128), and the gangue slurry and mine water are fed into the flotation pulping integrated machine (12) through the feed pipe (12103).

10. A method for dissociating, sorting, slurrying and filling waste rock, based on the waste rock dissociating, sorting, slurrying and filling system according to any one of claims 1 to 9, characterized by comprising: The gangue raw material is fed into the pre-crushing system (1) and crushed to a particle size of less than 10 mm, and then fed into the ball mill (2); After being crushed to a particle size of less than 1 mm by a ball mill (2), the particles are fed into a first mixing tank (3); The materials with a particle size of less than 1 mm in the first mixing tank (3) are fed into the autogenous medium hydrocyclone (5) through the first slurry pump (4) for sorting to obtain coarse coal slime and gangue slurry, and the coarse coal slime is fed into the second mixing tank (6); The coarse coal sludge in the second mixing tank (6) is fed into the clean coal flotation mechanism through the second slurry pump (7); The gangue slurry and mine water are fed into the clean coal flotation mechanism to obtain clean coal and grouting liquid through sorting; The grouting liquid is transported to the coal mine separation layer filling space through the grouting pump (10).

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