Combined production device and production process of heavy medium shallow groove separation ash reduction and leaching chlorine reduction

By combining heavy medium shallow tank separation for ash reduction and leaching for chlorine reduction, the problems of chlorine removal and equipment layout in clean coal have been solved, achieving efficient and continuous production and reducing equipment footprint, thereby improving the quality of clean coal and production efficiency.

CN120920179BActive Publication Date: 2026-07-31HUANENG COAL TECH RES CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HUANENG COAL TECH RES CO LTD
Filing Date
2025-08-12
Publication Date
2026-07-31

AI Technical Summary

Technical Problem

Existing coal sorting processes are unable to effectively remove chlorine from clean coal simultaneously, leading to environmental pollution and equipment corrosion. Furthermore, the equipment is scattered, occupies a large area, and production is discontinuous, increasing costs and the risk of breakage.

Method used

The system employs a combined heavy medium shallow tank separation and leaching dechlorination production unit. Clean coal is transported through an overflow port to the first and second rotatable collection tanks, where it is dechlorinated by immersion in a suspension solution. Drainage is flexibly controlled, and the components are rationally arranged to reduce equipment footprint and material transfer links.

Benefits of technology

It achieves efficient dechlorination of clean coal, reduces equipment footprint and material transfer links, lowers the risk of breakage, improves production efficiency and product quality, and meets the requirements of sustainable development.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention relates to the field of coal ash and chlorine removal technology, and proposes a combined heavy medium shallow tank separation ash and leaching chlorine removal production device and process. The device includes a separation unit with an overflow port for conveying clean coal; a frame; a conveyor unit mounted on the frame and located below the overflow port for conveying clean coal; a first receiving tank rotatably mounted on the frame, having several first drainage holes; and a second receiving tank mounted on the frame and located inside the first receiving tank, with the conveyor unit leading to the second receiving tank, which has second drainage holes. When the first receiving tank rotates, the first and second drainage holes may connect or disconnect. When disconnected, the second receiving tank stores water and clean coal; when connected, the first and second drainage holes are used for water discharge. This technical solution solves the problem of poor ash and chlorine removal efficiency in existing heavy medium shallow tank separation technologies.
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Description

Technical Field

[0001] This invention relates to the field of coal ash and chlorine removal technology, specifically to a combined heavy medium shallow tank separation ash removal and leaching chlorine removal production device and production process. Background Technology

[0002] Currently, the requirements for the quality of clean coal in the coal processing industry are constantly increasing. Traditional coal sorting processes often focus on a single ash reduction treatment, separating clean coal from coal based on density differences using heavy medium shallow trough sorting technology. However, this method is difficult to simultaneously and effectively remove impurities such as chlorine from the clean coal. On the one hand, chlorine in the clean coal will be converted into harmful gases such as hydrogen chloride during subsequent combustion, causing environmental pollution, equipment corrosion, and reducing equipment lifespan. On the other hand, existing sorting and subsequent processing equipment is scattered, occupies a large area, and the connections between various links are not tight, resulting in cumbersome material transfer processes. This not only increases the risk of clean coal breakage and reduces product quality but also consumes a lot of manpower and material costs. Moreover, in the clean coal and water separation and temporary storage stages, traditional equipment has inflexible drainage control, which can easily cause clean coal to be lost with water. At the same time, it cannot quickly switch working states according to the production rhythm, making it difficult to meet the needs of efficient and continuous production. Summary of the Invention

[0003] This invention proposes a combined heavy medium shallow tank sorting and ash removal and leaching and chlorination removal production device and process, which solves the problem of poor ash removal and chlorination removal effect in related technologies.

[0004] The technical solution of the present invention is as follows:

[0005] The combined heavy medium shallow tank separation and ash reduction and leaching and chlorination reduction production unit includes:

[0006] The sorting component has an overflow port for conveying clean coal;

[0007] A conveyor, located below the overflow port, is used to convey clean coal.

[0008] The first storage bucket has several first drainage holes;

[0009] The second storage bucket is connected to the conveyor and is rotatably disposed inside the first storage bucket. The second storage bucket has a second drain hole. After the first and second storage buckets rotate relative to each other, the first drain hole and the second drain hole are connected or disconnected. When the first drain hole and the second drain hole are disconnected, the second storage bucket is used to store water and refined coal. When the first drain hole and the second drain hole are connected, it is used to release water.

[0010] As a further technical solution, it also includes:

[0011] frame;

[0012] The conveyor is vibrating and tilted on the frame, the conveyor has filter holes, and further includes:

[0013] A return cylinder is mounted on the frame and located below the conveyor.

[0014] As a further technical solution, both the first storage bin and the second storage bin have multiple units, and further include:

[0015] A turntable is rotatably mounted on the frame, and the first storage bin is rotatably mounted on the turntable. The first storage bins are arranged at intervals along the circumference on the turntable.

[0016] The second storage bin is positioned on the turntable and is located inside the first storage bin.

[0017] Optionally, it also includes:

[0018] A storage component is disposed on the frame and located below the conveyor. The storage component has an opening that leads to the second storage bin, and the conveyor passes through the storage component to the second storage bin.

[0019] Optionally, it also includes:

[0020] A water pipe is installed on the frame and leads to a second storage bin.

[0021] Optionally, it also includes:

[0022] A lifting frame is mounted on the frame and has a sliding groove with a first toothed rack at the bottom end of the sliding groove.

[0023] The first filter screen has a rotating shaft. The first filter screen rotates and is raised and lowered on the lifting frame via the rotating shaft. One end of the rotating shaft has a first gear for meshing with the first rack. After the first filter screen slides to the bottom of the slide groove, the first filter screen is arranged in a horizontal direction. After the first filter screen slides to the top of the slide groove, the first filter screen is arranged in a vertical direction.

[0024] Optionally, the outer side of the first storage bin has a third gear, and further includes:

[0025] A plurality of ring racks are arranged at intervals on the frame. When the turntable rotates, it drives one of the third gears to mesh with one of the ring racks, thereby driving the first storage bucket to rotate.

[0026] Optionally, the turntable includes:

[0027] The main body is rotatably mounted on the frame;

[0028] A rotating plate, comprising several plates, is arranged at circumferential intervals on the main body. The first storage bin is disposed on the rotating plate, and the second storage bin is disposed on the rotating plate. When the rotating plate rotates, it causes the first storage bin and the second storage bin to rotate 180°.

[0029] The heavy medium shallow tank separation and leaching dechlorination production process uses a combined heavy medium shallow tank separation and leaching dechlorination production unit to deash and dechlorinate materials.

[0030] The working principle and beneficial effects of this invention are as follows:

[0031] In this invention, the separator is a heavy medium shallow trough separator, and the clean coal flowing out of the overflow port contains a suspension. The conveyor transports the clean coal to the second receiving bucket. Since the first and second receiving buckets rotate relative to each other, the first and second drain holes are initially disconnected. The second receiving bucket contains a large amount of water. Soaking the clean coal in the second receiving bucket not only removes the suspension on the clean coal but also further removes chlorine. After soaking for a period of time, the first receiving bucket rotates, connecting the first and second drain holes, and the water flows away through the first and second drain holes.

[0032] This solution closely integrates the heavy medium shallow tank sorting and ash reduction with the leaching and chlorine reduction processes. By rationally arranging the components, the process flow is simplified, the equipment footprint is reduced, and the factory construction cost is lowered.

[0033] The first and second collection bins effectively store clean coal and water, further dechlorinate the coal, and allow for flexible control of drainage. The overflow outlet of the sorting unit connects directly to the conveyor, reducing material transfer links, lowering the risk of clean coal breakage, and ensuring the quality of the clean coal. Attached Figure Description

[0034] The preferred embodiments will now be described in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages, and implementation methods of the present invention.

[0035] Figure 1 This is a schematic diagram of the structure of the present invention;

[0036] Figure 2 for Figure 1 Enlarged view of point A;

[0037] Figure 3 This is a schematic diagram of the first helical gear structure of the present invention;

[0038] Figure 4 This is a partial structural diagram of the lifting frame of the present invention.

[0039] In the diagram: 1. Sorting component, 11. Overflow port, 2. Frame, 3. Conveying component, 4. First collection bucket, 41. First drain hole, 5. Second collection bucket, 51. Second drain hole, 6. Return cylinder, 7. Turntable, 8. Storage component, 9. Water pipe, 10. Lifting frame, 101. Slide, 102. First rack, 110. First filter screen, 111. Rotating shaft, 112. First gear, 120. Second filter screen, 130. First helical gear, 140. Second helical gear, 150. Screw, 160. Ring rack, 71. Main body, 72. Rotating plate. Detailed Implementation

[0040] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are merely some embodiments of the present invention. For those skilled in the art, they can be understood as further technical solutions without creative effort. In some drawings, components with the same structure or function are only schematically illustrated, or only one is marked. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0041] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0042] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0043] Reference Figures 1-4The first embodiment of the present invention proposes a combined heavy medium shallow tank sorting and ash reduction and leaching and chlorination reduction production device, including a sorting component 1, which has an overflow port 11 for conveying clean coal; a conveying component 3 located below the overflow port 11 for conveying clean coal; a first receiving tank 4 having a plurality of first drainage holes 41; a second receiving tank 5 located inside the first receiving tank 4, with the conveying component 3 leading to the second receiving tank 5, and the second receiving tank 5 having second drainage holes 51. After the first receiving tank 4 and the second receiving tank 5 rotate relative to each other, the first drainage holes 41 and the second drainage holes 51 are connected or disconnected. After the first drainage holes 41 and the second drainage holes 51 are disconnected, the second receiving tank 5 is used to store water and clean coal. After the first drainage holes 41 and the second drainage holes 51 are connected, water is discharged.

[0044] In this embodiment, the separator is a heavy medium shallow trough separator, and the clean coal flowing out of the overflow port 11 contains a suspension. The conveyor 3 transports the clean coal to the second receiving tank 5. Since the first receiving tank 4 and the second receiving tank 5 rotate relative to each other, the first drain hole 41 and the second drain hole 51 are disconnected first. The second receiving tank 5 contains a large amount of water. Soaking the clean coal in the second receiving tank 5 can not only remove the suspension on the clean coal, but also further remove chlorine. After soaking for a period of time, the first receiving tank 4 rotates, so that the first drain hole 41 and the second drain hole 51 are connected, and the water flows out from the first drain hole 41 and the second drain hole 51.

[0045] This solution closely integrates the heavy medium shallow tank sorting and ash reduction with the leaching and chlorine reduction processes. By rationally arranging the components, the process flow is simplified, the equipment footprint is reduced, and the factory construction cost is lowered.

[0046] The first and second collection bins 4 and 5 effectively store clean coal and water, further dechlorinate the coal, and allow for flexible control of drainage. The overflow port 11 of the sorting component 1 leads directly to the conveying component 3, reducing material transfer links, lowering the risk of clean coal breakage, and ensuring the quality of clean coal.

[0047] Furthermore, it also includes a frame 2, a conveyor 3 that is vibrating and tilted on the frame 2, the conveyor 3 having filter holes, and a return cylinder 6 that is disposed on the frame 2 and located below the conveyor 3.

[0048] In this embodiment, the conveyor 3 uses a specially designed vibrating screen conveyor belt, which is installed at an angle on the frame 2 via springs and shock-absorbing pads. The angle of inclination is appropriately increased to enhance the downward force of the clean coal. The filter holes are small to ensure effective drainage without causing the clean coal to leak. The return cylinder 6 is made of corrosion-resistant material and has a valve at the bottom for easy periodic cleaning.

[0049] The vibrating and tilting conveyor 3 further enhances the separation effect between clean coal and suspension, and accelerates the drying speed of clean coal. The filter holes, in conjunction with the return cylinder 6, enable the recycling and reuse of suspension resources, saving production costs, improving resource utilization, and meeting the requirements of sustainable development.

[0050] Furthermore, there are multiple first storage bins 4 and second storage bins 5. The turntable 7 is rotatably mounted on the frame 2. The first storage bin 4 is rotatably mounted on the turntable 7 and is rotatably mounted on the turntable 7 at intervals along the circumference. The second storage bin 5 is mounted on the turntable 7.

[0051] In this embodiment, multiple first storage bins 4 and second storage bins 5 are manufactured. The turntable 7 is rotatably connected to the frame 2 via a central shaft. High-precision rotary support ensures stable rotation. The first storage bins 4 are evenly spaced and rotated on the turntable 7. The second storage bins 5 are fixed on the turntable 7 and rotate with the turntable 7. The second storage bins 5 and the first storage bins 4 are concentrically arranged.

[0052] The design of multiple first and second storage bins 4 and 5, working in conjunction with the turntable 7, enables continuous operation. While one second storage bin 5 and one first storage bin 4 are draining water or processing materials, the other first and second storage bins 4 and 5 can simultaneously collect and store refined coal, greatly improving overall production efficiency and meeting the needs of large-scale industrial production. The movable design of the first and second storage bins 4 and 5 facilitates maintenance and cleaning, reduces equipment maintenance difficulty and downtime, and improves equipment reliability and service life.

[0053] Furthermore, the storage component 8 is mounted on the frame 2 and located below the conveyor 3. The storage component 8 has an opening that leads to the second storage bin 5. The conveyor 3 passes through the storage component 8 to the second storage bin 5.

[0054] In this embodiment, the storage component 8 adopts a funnel-shaped structure and is fixed to the frame 2 by welding or bolting. It is located below the conveyor belt, and the opening size is adapted to the end of the conveyor belt. The outlet of the storage component 8 ensures that the clean coal can smoothly slide into the second collection bucket 5. The storage component 8 is equipped with a buffer baffle to reduce the impact of the falling clean coal and prevent the clean coal from splashing.

[0055] The storage unit 8 serves as a transitional link, ensuring a smooth transfer of refined coal from the conveyor 3 to the second storage bin 5, preventing material spillage and waste, and further guaranteeing the continuity and stability of the production process. The buffer baffle effectively protects the second storage bin 5 from impact damage, extending the equipment's service life and reducing equipment maintenance costs.

[0056] Furthermore, water pipe 9 is installed on the frame 2, and water pipe 9 leads to a second storage bin 5.

[0057] Furthermore, the lifting frame 10 is ellipsably mounted on the frame 2. The lifting frame 10 has a slide groove 101, and the bottom end of the slide groove 101 has a first rack 102. The first filter screen 110 has a rotating shaft 111. The first filter screen 110 rotates through the rotating shaft 111 and is ellipsably mounted on the lifting frame 10. One end of the rotating shaft 111 has a first gear 112, which meshes with the first rack 102. After the first filter screen 110 slides to the bottom end of the slide groove 101, the first filter screen 110 is arranged in a horizontal direction. After the first filter screen 110 slides to the top end of the slide groove 101, the first filter screen 110 is arranged in a vertical direction.

[0058] In this embodiment, the lifting frame 10 uses a hydraulic lifting device or a screw and nut transmission structure to achieve the lifting function. It is installed in a suitable position on the frame 2. The slide groove 101 has high machining precision to ensure smooth sliding of the first filter screen 110. The first rack 102 is integrally formed with the slide groove 101 or fixed by high-strength bolts. The first filter screen 110 is made of woven stainless steel wire and has a certain toughness. The rotating shaft 111 is firmly welded to the first filter screen 110. The first gear 112 can mesh well with the first rack 102. There is a first rotating sleeve between the first gear 112 and the first filter screen 110, which is fitted on the rotating shaft 111. A telescopic component is set on the lifting frame 10, and the lifting end is set on the lifting sleeve. The telescopic component and the lifting frame are controlled separately. The retrieval is achieved through the cooperation of the telescopic component and the lifting frame 10. When the hydraulic device or screw drives the lifting frame 10 to rise, the first filter screen 110 descends to a certain extent and then gradually rotates from the vertical direction to the horizontal direction under the action of the rack and pinion. Due to the difference in density, the clean coal and the garbage remaining in the clean coal will sink to the bottom of the second collection bucket 5, while the garbage can float on the water surface. After the first filter screen 110 descends vertically into the water, it rotates to the horizontal state. After the first filter screen 110 rises, the garbage can be retrieved.

[0059] Furthermore, the second filter 120 is slidably disposed within the first filter 110, and after the second filter 120 slides, it slides out of the first filter 110.

[0060] In this embodiment, the second filter 120 is designed with external dimensions based on the internal space of the first filter 110, so that it can be tightly nested and slide smoothly. In order to improve the retrieval accuracy, this embodiment designs the first filter 110 so that when it is arranged vertically, the second filter 120 slides into the first filter 110, and when the first filter 110 is arranged horizontally, the second filter 120 slides out of the first filter 110, thereby increasing the retrieval area. If the cross-sectional area of ​​the first filter 110 is large, when the first filter 110 rotates in the water, it will press the garbage into the water.

[0061] Mechanical transmission methods are highly reliable and not easily damaged in harsh production environments, reducing equipment failure rates, ensuring production continuity, and reducing the difficulty and labor intensity of manual operation.

[0062] Furthermore, the outer side of the first storage bucket 4 has a third gear, and there are several ring racks 160, which are spaced apart on the frame 2. After the turntable 7 rotates, it drives one third gear to mesh with one ring rack 160, thereby driving the first storage bucket 4 to rotate.

[0063] In this embodiment, the third gear on the outside of the first storage bucket 4 is fixed by a key connection to ensure concentricity and transmission stability. The ring rack 160 is made of high-strength alloy steel, and its relative position with the turntable 7 has been strictly calculated and adjusted. When the turntable 7 rotates slowly, the third gear can smoothly mesh with the predetermined ring rack 160, transmit sufficient torque to drive the first storage bucket 4 to rotate to the required angle, and realize the switching of the first drain hole 41 and the second drain hole 51 to be connected.

[0064] The meshing transmission between the third gear and the ring rack 160 provides reliable and stable power for the rotation of the first storage bucket 4, ensuring accuracy during frequent switching between the states of the first drain hole 41 and the second drain hole 51. This compact mechanical structure occupies little space, which is conducive to optimizing the overall layout of the device, improving the space utilization rate of the equipment, and facilitating the installation of more production units in a limited space.

[0065] Furthermore, the main body 71 is rotatably mounted on the frame 2; there are several rotating plates 72, which are spaced apart on the main body 71 along the circumference. The first storage bin 4 is mounted on the rotating plate 72, and the second storage bin 5 is mounted on the rotating plate 72. After the rotating plate 72 rotates, it drives the first storage bin 4 and the second storage bin 5 to rotate 180°.

[0066] In this embodiment, the rotating plate 72 rotates evenly around the circumference of the main body 71. The first storage bin 4 and the second storage bin 5 are respectively fixed to the rotating plate 72 by special mounting brackets. A limiting device is provided between the rotating plate 72 and the main body 71 to ensure accurate positioning after rotating 180° and avoid shaking. A drive handle is provided on the edge of the turntable 72 or connected to an external motor drive device to realize the operation of the rotating plate 72 driving the first storage bin 4 and the second storage bin 5 to flip.

[0067] The rotating plate 72 of the turntable 7 has a simple and efficient structure design, which can quickly achieve a 180° rotation of the first storage bin 4 and the second storage bin 5, facilitating the rapid transfer of materials between different processing stages, such as quickly pouring clean coal into subsequent processing equipment after drainage, thereby improving the production rhythm.

[0068] The heavy medium shallow tank separation and leaching dechlorination production process utilizes a combined heavy medium shallow tank separation and leaching dechlorination unit to achieve both ash reduction and dechlorination. The core feature of this process lies in employing the aforementioned combined heavy medium shallow tank separation and leaching dechlorination unit to achieve these objectives. This involves the structural design of the unit, the composition of its components, and their coordinated operation.

[0069] I. Raw material pretreatment stage

[0070] The raw coal to be processed is fed into the separator 1 of the combined heavy medium shallow tank separation and leaching dechlorination production unit via a conveying device. Separator 1 utilizes a heavy medium suspension to achieve preliminary ash separation based on the density difference between the raw coal and impurities such as gangue. Clean coal particles overflow from the overflow port 11 under buoyancy, while heavier impurities such as gangue settle at the bottom of the separator and are periodically discharged for further processing.

[0071] II. Coal conveying and initial dewatering stage

[0072] The clean coal flowing out of the overflow port 11 is transported by the conveyor 3 located below it. After reaching the end of the conveyor 3, the clean coal falls into the storage container 8. The opening of the storage container 8 leads to the second receiving container 5, and the clean coal flows into the second receiving container 5. The second receiving container 5 contains an appropriate amount of water through the water pipe 9, which dechlorinates the clean coal during its entry.

[0073] III. Leaching and Chlorine Reduction Operation Stage

[0074] Water pipe 9 injects an appropriate amount of clean water into a second storage tank 5 at appropriate times. This utilizes the solubility of chloride salts in water to initially reduce the chlorine content in the refined coal.

[0075] During the leaching process, the turntable 7 drives the first collection tank 4 and the second collection tank 5 to rotate slowly, so that the clean coal and the leachate can fully contact and mix, ensuring the uniformity of the leaching and chlorination reduction effect.

[0076] IV. Clean Coal Storage and Further Drainage Stage

[0077] After the clean coal enters the second collection bin 5, the first collection bin 4 and the second collection bin 5 can rotate relative to each other according to process requirements. After dechlorination, the first drain hole 41 and the second drain hole 51 are connected, and the accumulated water is quickly discharged through the drain hole to achieve the purpose of rapid drainage.

[0078] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A combined production device of heavy medium shallow slot separation ash reduction and leaching chlorine reduction, characterized in that, include: The sorting component (1) has an overflow port (11) for conveying clean coal; The conveying component (3) is located below the overflow port (11) and is used to convey clean coal; The first storage bucket (4) has several first drainage holes (41). The second storage bucket (5) is connected to the conveying component (3). The second storage bucket (5) is rotatably disposed inside the first storage bucket (4). The second storage bucket (5) has a second drain hole (51). After the first storage bucket (4) and the second storage bucket (5) rotate relative to each other, the first drain hole (41) and the second drain hole (51) are connected or disconnected. After the first drain hole (41) and the second drain hole (51) are disconnected, the second storage bucket (5) is used to store water and refined coal. After the first drain hole (41) and the second drain hole (51) are connected, it is used to release water. The first storage bin (4) and the second storage bin (5) each have a plurality of bins, and further include: A turntable (7) is rotatably mounted on a frame (2), and the first storage bin (4) is rotatably mounted on the turntable (7). The first storage bins (4) are arranged at intervals along the circumference on the turntable (7). The second storage bin (5) is disposed on the turntable (7), and the second storage bin (5) is located inside the first storage bin (4); The first storage bucket (4) has a third gear on its outer side and also includes: A number of ring racks (160) are spaced apart on the frame (2). After the turntable (7) rotates, it drives one of the third gears to mesh with one of the ring racks (160), thereby driving the first storage bucket (4) to rotate. The turntable (7) includes: The main body (71) is rotatably mounted on the frame (2); A rotating plate (72) has several of them, which are arranged at intervals along the circumference on the main body (71). The first storage bucket (4) is arranged on the rotating plate (72), and the second storage bucket (5) is arranged on the rotating plate (72). After the rotating plate (72) rotates, it drives the first storage bucket (4) and the second storage bucket (5) to rotate 180°.

2. The combined production device of heavy medium shallow slot sorting ash reduction and leaching chlorine reduction according to claim 1, characterized in that, Also includes: Rack (2); The conveyor (3) is vibrating and tilted on the frame (2), the conveyor (3) has filter holes, and further includes: The return tube (6) is mounted on the frame (2) and located below the conveyor (3).

3. The combined production device of heavy medium shallow slot sorting ash reduction and leaching chlorine reduction according to claim 1, characterized in that, Also includes: The storage component (8) is disposed on the frame (2) and located below the conveyor (3). The storage component (8) has an opening that leads to the second storage bin (5). The conveyor (3) leads to the second storage bin (5) through the storage component (8).

4. The combined production device of heavy medium shallow slot sorting ash reduction and leaching chlorine reduction according to claim 1, characterized in that, Also includes: A water pipe (9) is installed on the frame (2) and the water pipe (9) leads to a second storage bucket (5).

5. The combined production device of heavy medium shallow slot sorting ash reduction and leaching chlorine reduction according to claim 1, characterized in that, Also includes: The lifting frame (10) is lifted and installed on the frame (2). The lifting frame (10) has a slide groove (101) and a first rack (102) at the bottom end of the slide groove (101). The first filter screen (110) has a rotating shaft (111). The first filter screen (110) rotates and is raised and lowered on the lifting frame (10) via the rotating shaft (111). One end of the rotating shaft (111) has a first gear (112). The first gear (112) is used to mesh with the first rack (102). After the first filter screen (110) slides to the bottom of the slide groove (101), the first filter screen (110) is arranged in the horizontal direction. After the first filter screen (110) slides to the top of the slide groove (101), the first filter screen (110) is arranged in the vertical direction.

6. A production process of heavy medium shallow slot separation ash reduction and leaching chlorine reduction, characterized in that, The combined heavy medium shallow tank sorting and leaching dechlorination production unit according to any one of claims 1 to 5 is used for ash removal and dechlorination.