Urban waste incineration slag resource utilization device and method

Abstract

The invention provides an urban waste incineration slag resource utilization device and method, and relates to the technical field of slag waste recycling. The urban waste incineration slag resource utilization device comprises an equipment frame and a crusher installed on the equipment frame, and further comprises a circulation sedimentation assembly, a water adding assembly and a resource recovery assembly which are installed on the equipment frame, and the crusher transfers crushed slag into the water adding assembly; the water adding assembly is used for adding water into the ash and enabling the water to flow into the circulation precipitation assembly, the water is discharged to the resource recycling assembly after operation precipitation, and the multiple sets of stirring assemblies are used for stirring slurry in the circulation precipitation assembly. According to the urban waste incineration slag resource utilization device and method, through the arrangement of the circulation sedimentation assembly and the relative fixed sedimentation tank, sedimentation can be obtained within the operation time, overturning dumping and high-pressure water flushing can be achieved, internal slurry is easier to clean, and blockage is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of slag waste recycling, and specifically to a device and method for resource utilization of municipal solid waste incineration slag. Background Art

[0002] In recent years, with the popularization of the incineration power generation technology for municipal solid waste and the commissioning of more and more waste incineration power plants, the problems of municipal solid waste treatment and environmental pollution have been completely solved. Through incineration, the volume of waste has been greatly reduced, harmful substances in the waste have been completely burned, and at the same time, the waste heat generated by incineration has been recycled. However, the by-product slag generated during the incineration process, including the incineration residues remaining on the grate and the particles falling from between the grates, has attracted increasing attention because of its rich resources, large output, and certain environmental pollution. Many experts and scholars have conducted in-depth research on its resource utilization. Existing research and engineering practices have proved that the resource utilization of slag is feasible. However, since the slag contains a certain amount of Fe, non-ferrous metals, unburned residual waste, etc., direct utilization may have an adverse impact on human health and the environment. In addition, due to the existence of these substances, it cannot meet the technical requirements specified for resource utilization. Therefore, before the resource utilization of slag, it is necessary to perform sorting pretreatment on it, recover and utilize waste metals such as Fe, Cu, Al, etc., separate and collect unburned residual waste, and recycle it.

[0003] In addition, directly landfilling the slag will pollute the soil at the landfill site and affect crop growth. Therefore, when dealing with slag, it is necessary to fully extract the resources in the slag and reduce the pollution degree of the slag.

[0004] Currently, generally, the slag is simply crushed, and magnetic adsorption is used to remove the internal metal impurities, or flotation is carried out in the form of water washing. Both of these methods can well obtain the resources in the slag, but it is difficult to establish a complete production line form, and it is difficult to combine the two. Therefore, more resources are wasted. In addition, there are many existing water washing tanks, which are difficult in terms of water supply and drainage, and are prone to sediment impurities, resulting in the need for frequent manual cleaning. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a device and method for resource utilization of municipal solid waste incineration slag, which solves the problems raised in the above background art.

[0006] To achieve the above object, the present invention is realized through the following technical solutions: A device for resource utilization of urban waste incineration slag includes an equipment frame and a crusher installed on the equipment frame, and also includes a flow and sedimentation component, a water addition component, and a resource recovery component installed on the equipment frame. The crusher transfers the crushed slag to the water addition component. The water addition component is used to add water to the ash slag and make it flow into the flow and sedimentation component, and after operation and sedimentation, it is discharged onto the resource recovery component. There are also multiple groups of stirring components for stirring the slurry in the flow and sedimentation component.

[0007] The flow and sedimentation component includes two groups of chain belt mechanisms and multiple sedimentation tanks arranged between the two groups of chain belt mechanisms. The centers at the upper ends of the sedimentation tanks are respectively rotationally connected to the conveyor chain parts of the front and rear two groups of chain belt mechanisms. The sedimentation tank moving to the center above the chain belt mechanism is used to receive the ash slurry discharged from the water addition component. As the chain belt mechanism operates, the sedimentation tank rotates to the lower end, and the sedimentation tank rotates and discharges the ash slurry.

[0008] Preferably, the flow and sedimentation component further includes a water replenishment mechanism and a flushing mechanism. The water replenishment mechanism is used to add water to the sedimentation tank that is about to receive the ash slurry, and the flushing mechanism is used to flush the sedimentation tank for discharging materials. There is also an angle adjustment mechanism installed on the equipment frame and on one side of the two groups of chain belt mechanisms. The angle adjustment mechanism can control the rotation of the sedimentation tank and discharge the ash slurry.

[0009] Preferably, the resource recovery component includes an inclined water flow plate. After the sedimentation tank is turned over with its mouth facing downwards and aligned with the water flow plate, equidistantly arranged electromagnetic triangular plates are fixedly installed on the bottom wall of the water flow plate. There are also electromagnets equal in number to the electromagnetic triangular plates. After the electromagnets are energized, they can make the electromagnetic triangular plates generate magnetism. There is also a flushing pipe installed at the upper end of the water flow plate for flushing the water flow plate and the electromagnetic triangular plates.

[0010] Preferably, a number of micropores are provided on the bottom wall of the water flow plate for initially reducing the water content in the ash slurry.

[0011] Preferably, the stirring component includes a track plate, a sliding plate, a cylinder a, an electric turntable, and a stirring shaft. The sliding plate is installed on the track plate and can actively slide back and forth along the track plate. There are multiple cylinders a fixed to the sliding plate. The output ends of the cylinders a are all fixed to the electric turntable. The upper ends of the multiple stirring shafts are fixed to the bottom of the electric turntable. The electric turntable can make the multiple stirring shafts rotate together relative to the cylinder a and the sliding plate.

[0012] Preferably, one of the stirring components corresponds to the sedimentation tank that has just received the ash slurry and has moved one position, and the track plate of this stirring component is fixed to the equipment frame.

[0013] Preferably, the other stirring assembly is correspondingly connected to the settling tank for mortar after passing through the first stirring assembly and then moves to another position. The track plate of this stirring assembly is connected to the equipment frame by cylinder b, and cylinder b is used to change the position of the track plate.

[0014] Preferably, the angle adjustment mechanism includes a gear and an arc-shaped rack. The gear is connected to the hinge joint of the settling tank and the conveyor chain part, the gear is fixed to the settling tank, and the arc-shaped rack is fixed to the equipment frame. After the settling tank moves to the position of the arc-shaped rack, the gear meshes with the arc-shaped rack. At this time, the bottom end of the settling tank is lifted upward until the opening faces downward, and then the gear crosses the arc-shaped rack, and the settling tank rotates.

[0015] Preferably, the flushing mechanism, the water replenishing mechanism, and the water adding assembly all include a plurality of spray pipes fixed together; The spray pipes of the flushing mechanism are inclined upward and correspond to the settling tank with the opening facing downward; The spray pipes of the water replenishing mechanism are inclined downward and correspond to the settling tank that is about to receive mortar; The water adding assembly further includes a feeding pipe. The upper end of the feeding pipe is connected to the ash discharging end of the crusher, and the spray pipe is inserted into the feeding pipe and is inclined downward.

[0016] A method for resource utilization of urban waste incineration slag includes the following steps: Step 1: First, the recycled slag needs to be processed by a crusher, and the slag after being processed by the crusher passes through the water adding assembly; Step 2: The spray pipes of the water adding assembly spray water on the passing slag, the chain belt mechanism operates, the settling tank that is about to receive mortar is first filled with water by the spray pipe, and the mortar falls into the water-filled settling tank; Step 3: After being stirred by two groups of stirring assemblies, it finally runs to the angle adjustment mechanism, then flips and discharges under the action of the spray pipe; Step 4: The slurry falls on the water flow plate, and the heavy slag and the adsorbable metals are blocked by the electromagnetic triangular plate; Step 5: Finally, the water flow plate is flushed to collect the heavy slag and precious metals above.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. For the device and method for resource utilization of urban waste incineration slag, by setting up the flow and precipitation assembly, the mortar after adding water can be stored and collected in the settling tank. When the settling tank is operating, the mortar gradually settles, and the light and heavy ash slags are separated. Compared with the fixed settling tank, precipitation can be achieved within the operating time, and it can be flipped and dumped, and flushed with high-pressure water, making it easier to clean the internal slurry and preventing blockage.

[0018] 2. The device and method for resource utilization of urban waste incineration furnace slag can be stirred during the operation of the sedimentation tank. After mixing the ash slag and water and stirring them, it is easier to separate the heavy and light ash slag, and it can also separate the metal slag and ash slag, making it easier to adsorb the metal particles wrapped in the ash chips during the subsequent magnetic separation.

[0019] 3. The device and method for resource utilization of urban waste incineration furnace slag are provided with a resource recovery component. When the slurry flows through the water flow plate, due to gravity, the heavy slurry will fall and be located between two electromagnetic triangular plates, and the electromagnetic triangular plates have magnetism to adsorb the metal in the slurry. By flushing it, heavy ash slag can be obtained first, and by powering off and cleaning again, metal slag can be obtained. Therefore, it can efficiently and accurately separate floating ash, heavy slag, metal slag, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a front view of the structure of the present invention; Figure 3 is a schematic structural diagram of the flow-through sedimentation component of the present invention; Figure 4 is a front view of the structure of the flow-through sedimentation component of the present invention; Figure 5 For the present invention Figure 4 is an enlarged structural view of part A in; Figure 6 For the present invention Figure 4 is an enlarged structural view of part B in; Figure 7 is a partial structural diagram of the flow-through sedimentation component of the present invention; Figure 8 is a structural diagram of the resource recovery component of the present invention.

[0021] In the figure: 1. Equipment frame; 2. Crusher; 3. Flow-through sedimentation component; 301. Chain belt mechanism; 302. Sedimentation tank; 303. Water replenishing mechanism; 304. Scouring mechanism; 305. Angle adjusting mechanism; 3051. Gear; 3052. Arc-shaped rack; 4. Water adding component; 401. Feeding pipe; 5. Resource recovery component; 501. Water flow plate; 502. Electromagnetic triangular plate; 503. Electromagnet; 504. Flushing pipe; 6. Stirring component; 601. Track plate; 602. Slide plate; 603. Cylinder a; 604. Electric turntable; 605. Stirring shaft; 606. Cylinder b; 7. Water spraying pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0023] It should be noted that all the directional indications in the embodiments of the present application are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0024] In the present application, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0025] In addition, in the present application, descriptions such as "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0026] As Figures 1-8 shown, a device for resource utilization of urban waste incineration slag includes an equipment frame 1 and a crusher 2 installed on the equipment frame 1. It further includes a flow and sedimentation component 3, a water addition component 4, and a resource recovery component 5 installed on the equipment frame 1. The crusher 2 transfers the crushed slag to the water addition component 4. The water addition component 4 is used to add water to the ash slag and make it flow into the flow and sedimentation component 3, and after operation and sedimentation, it is discharged onto the resource recovery component 5. It also includes multiple groups of stirring components 6 for stirring the slurry in the flow and sedimentation component 3.

[0027] The slag from the incineration of domestic waste is a kind of solid waste. If it is improperly handled by simple stacking, discharge into water bodies, random discharge, random loading and unloading, random transfer, secret discharge and smuggling, it will destroy the landscape. The non-biological and biological pollutants it contains will enter the soil, water bodies, atmosphere and biological systems, causing primary pollution to the soil, water bodies, atmosphere and biological systems, and damaging the ecological environment.

[0028] At present, the domestic waste landfills in major cities across the country have tight inventory, poor sanitary environment, and bad surrounding odor and water environment. This endangers the health and hygiene of residents and causes adverse social impacts. Untreated slag is simply piled in the open air, occupying land and destroying the landscape. In addition, the harmful components in the slag are spread through the air by wind, and penetrate into the soil and groundwater sources after rain, polluting rivers. This process is solid waste pollution.

[0029] The slag is first separated from the slag by a drum screen to remove the large-diameter lumps and unburned garbage. The unburned garbage is collected and transported to the power plant for further incineration. The lumps include lumps of metal, agglomerated slag, stones, and waste bricks. Large pieces of scrap iron are separated and collected through a magnetic separation, and other large pieces of metal are collected through manual sorting. The agglomerated slag, stones, and waste bricks are fed into the crusher 2 through a conveyor belt and crushed before being sorted again.

[0030] This solution uses an 800-type slag crushing equipment to crush the raw materials, with a total processing capacity of 50 tons / hour. The production line is designed to process approximately 400 tons in 8 hours.

[0031] The circulation sedimentation assembly 3 includes two groups of chain belt mechanisms 301 and a plurality of sedimentation tanks 302 arranged between the two groups of chain belt mechanisms 301. The upper center of the sedimentation tank 302 is rotatably connected with the conveying chain parts of the front and rear groups of chain belt mechanisms 301 respectively. The sedimentation tank 302 moved to the center above the chain belt mechanism 301 is used to receive the slurry discharged by the water adding assembly 4. As the chain belt mechanism 301 operates to make the sedimentation tank 302 operate to the lower end, the angle adjustment mechanism 305 can control the sedimentation tank 302 to rotate and discharge the slurry. In an optional embodiment, the circulation sedimentation component 3 further includes a water replenishment mechanism 303 and a flushing mechanism 304, wherein the water replenishment mechanism 303 is used to add water to the sedimentation tank 302 to be connected to the slurry, and the flushing mechanism 304 is used to flush the sedimentation tank 302 for discharge; It also includes an angle adjustment mechanism 305, which is installed on the equipment frame 1 and is located on one side of the two sets of chain belt mechanisms 301; The angle adjustment mechanism 305 can control the sedimentation tank 302 to rotate and discharge the slurry.

[0032] In this embodiment, the chain belt mechanism 301 includes a metal plate chain, a reinforcing belt, and a reinforced driving wheel. After combination, it has a strong load-bearing capacity. Specifically, the reinforced driving wheel is driven by an external motor, and large-torque driving is achieved by the speed reduction of the belt and pulley. The sedimentation tank 302 is erected on two groups of chain belt mechanisms 301. The chain belt mechanism 301 can carry 8 groups of sedimentation tanks 302 at a time. After adding mortar, the weight of a single sedimentation tank 302 is approximately 0.5 tons. The steel beam structure of the equipment frame 1 and the chain belt mechanism 301 can bear the overall weight.

[0033] In an alternative embodiment, the resource recovery component 5 includes an inclined water flow plate 501. After the sedimentation tank 302 is turned over, its opening faces downward and aligns with the water flow plate 501. The bottom wall of the water flow plate 501 is fixedly installed with electromagnetic triangular plates 502 arranged in an equidistant straight line. It also includes electromagnets 503 equal in number to the electromagnetic triangular plates 502. After the electromagnets 503 are energized, they can make the electromagnetic triangular plates 502 generate magnetism. It further includes a flushing pipe 504 installed at the upper end of the water flow plate 501 for flushing the water flow plate 501 and the electromagnetic triangular plates 502.

[0034] In this embodiment, the water flow plate 501 is used to realize the flow of sludge. After the sedimentation tank 302 filled with mortar is turned over, the slurry inside can be poured onto the water flow plate 501 to realize sand-water separation. The iron core inside the electromagnet 503 is connected to the electromagnetic triangular plate 502, and a magnetic field can be formed on the surface. Similarly, all the electromagnets 503 are driven and controlled by a control circuit to realize intermittent magnetization and demagnetization.

[0035] The flushing pipe 504 is connected to a high-pressure water circuit. When pouring the slurry, the water flow sprayed by the flushing pipe 504 can promote the flow of the slurry and can perform a primary separation of the slurry.

[0036] In an alternative embodiment, a number of micropores are provided on the bottom wall of the water flow plate 501 for reducing the water content in the mortar in the early stage.

[0037] In this embodiment, the micropores are used for simple water seepage, mainly to realize the sedimentation of heavy substances inside. The floating substances continue to flow downward. The micropores make the bottom of the water flow plate 501 in a mesh structure, and the micropores are distributed between two adjacent electromagnetic triangular plates 502.

[0038] In an alternative embodiment, the stirring assembly 6 includes an orbital plate 601, a sliding plate 602, a cylinder a 603, an electric turntable 604, and a stirring shaft 605. The sliding plate 602 is mounted on the orbital plate 601 and can actively slide back and forth along the orbital plate 601. A plurality of cylinders a 603 are provided and fixed to the sliding plate 602. The output ends of the cylinders a 603 are all fixed to the electric turntable 604. The upper ends of the plurality of stirring shafts 605 are fixed to the bottom of the electric turntable 604. The electric turntable 604 can cause the plurality of stirring shafts 605 to rotate together relative to the cylinder a 603 and the sliding plate 602.

[0039] In this embodiment, a servo motor is mounted on the sliding plate 602, and a gear or a lead screw mechanism is mounted on the output end of the servo motor, which can cause the sliding plate 602 to translate along the orbital plate 601 according to the set requirements. The cylinder a 603 is used to adjust the insertion depth of the electric turntable 604 and the stirring shaft 605 inside the sedimentation tank 302. The electric turntable 604 includes a motor and a disc, and the disc can rotate independently under the drive of the motor, which can cause the stirring shaft 605 to stir the slurry.

[0040] In an alternative embodiment, one of the stirring assemblies 6 corresponds to the sedimentation tank 302 that has just received the mortar and has moved to a position, and the orbital plate 601 of this stirring assembly 6 is fixed to the equipment frame 1.

[0041] In this embodiment, the stirring assembly 6 does not affect the movement of the sedimentation tank 302.

[0042] In an alternative embodiment, the other stirring assembly 6 corresponds to the sedimentation tank 302 that has received the mortar and has moved to another position after being stirred by the first stirring assembly 6. The orbital plate 601 of this stirring assembly 6 is connected to the equipment frame 1 by a cylinder b 606, and the cylinder b 606 is used to change the position of the orbital plate 601.

[0043] In this embodiment, the cylinder b 606 can cause the stirring assembly 6 not to affect the movement of the sedimentation tank 302.

[0044] In an alternative embodiment, the angle adjustment mechanism 305 includes a gear 3051 and an arc-shaped rack 3052. The gear 3051 is connected to the hinge joint of the sedimentation tank 302 and the conveyor chain part, and the gear 3051 is fixed to the sedimentation tank 302. The arc-shaped rack 3052 is fixed to the equipment frame 1. After the sedimentation tank 302 moves to the position of the arc-shaped rack 3052, the gear 3051 meshes with the arc-shaped rack 3052. At this time, the bottom end of the sedimentation tank 302 is lifted upward until the opening faces downward, and then the gear 3051 passes over the arc-shaped rack 3052, and the sedimentation tank 302 rotates.

[0045] In this embodiment, the gear 3051 and the arc-shaped rack 3052 are in a meshing relationship, and the radian of the arc-shaped rack 3052 is the same as the radian of the turning part of the chain belt mechanism 301. Therefore, when the sedimentation tank 302 passes through the turning part, the gear 3051 moves along the arc direction, so it can mesh with the arc-shaped rack 3052, and a simple flipping can be realized.

[0046] In an alternative embodiment, the flushing mechanism 304, the water replenishing mechanism 303, and the water adding assembly 4 each include a plurality of spray pipes 7 fixed together; The spray pipes 7 of the flushing mechanism 304 are inclined upward and correspond to the sedimentation tank 302 with the opening facing downward; The spray pipes 7 of the water replenishing mechanism 303 are inclined downward and correspond to the sedimentation tank 302 that is about to receive the mortar; The water adding assembly 4 further includes a blanking pipe 401. The upper end of the blanking pipe 401 is connected to the ash discharging end of the crusher 2, and the spray pipes 7 are inserted into the blanking pipe 401 and are inclined downward.

[0047] In this embodiment, the above spray pipes 7 are all connected to different water circuits and are all remotely and automatically controlled through solenoid valves.

[0048] A method for resource utilization of urban waste incineration slag includes the following steps: Step 1: First, the recovered slag needs to be processed by the crusher 2. After being processed by the crusher 2, the slag passes through the water adding assembly 4. In the water adding assembly 4, a large amount of dust is generated by the crushed ash and slag and moves downward; Step 2: The spray pipes 7 of the water adding assembly 4 spray water on the passing slag. By spraying water on the falling ash and slag with the spray pipes 7, the ash and slag can be wrapped, making the ash and slag and the powder ash in a slurry state. The chain belt mechanism 301 operates, and the sedimentation tank 302 that is about to receive the mortar first uses the spray pipes 7 to add water, so that there is a certain amount of clear water at the bottom of the sedimentation tank 302. The mortar falls into the water-added sedimentation tank 302. When the mortar falls, since the bottom sedimentation tank 302 contains water, it is not easy to generate dust and the phenomenon of slurry sticking to the wall is not easy to occur; Step 3: After being stirred by the two groups of stirring assemblies 6, it finally runs to the angle adjusting mechanism 305, then flips and discharges under the action of the spray pipes 7. The stirring shaft 605 can rotate and can also move in the sedimentation tank 302. When it rotates, it can fully mix the slurry and water, and the metal particles wrapped by the ash chips in the slurry can be revealed in this process; Step 4: The slurry falls on the flowing water plate 501, and the heavy slag and the adsorbable metal are blocked by the electromagnetic triangular plate 502; Step 5: Finally, rinse the flowing water plate 501 to collect the heavy slag and precious metals above. By rinsing it, heavy ash slag can be obtained first, and metal slag can be obtained by rinsing again after power-off. Therefore, it is possible to efficiently and accurately separate floating ash, heavy slag, metal slag, etc.

[0049] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0050] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0051] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for recycling slag from a municipal waste incineration furnace, comprising a device frame (1) and a crusher (2) mounted on the device frame (1), characterized in that: It also includes a circulation sedimentation component (3), a water adding component (4) and a resource recovery component (5) installed on the equipment frame (1); the crusher (2) transfers the crushed slag to the water adding component (4); the water adding component (4) is used to add water to the slag and make it flow into the circulation sedimentation component (3), and then discharge it to the resource recovery component (5) after running sedimentation; and it also includes a plurality of stirring components (6) for stirring the slurry in the circulation sedimentation component (3); The circulation sedimentation assembly (3) comprises two groups of chain belt mechanisms (301) and a plurality of sedimentation tanks (302) arranged between the two groups of chain belt mechanisms (301). The upper centers of the sedimentation tanks (302) are rotatably connected to the conveying chain parts of the front and rear groups of chain belt mechanisms (301), respectively. The sedimentation tank (302) moved to the center above the chain belt mechanism (301) is used to receive the slurry discharged by the water adding assembly (4). As the chain belt mechanism (301) operates to make the sedimentation tank (302) move to the lower end, the sedimentation tank (302) rotates and discharges the slurry.

2. The urban waste incineration slag resource utilization device according to claim 1 is characterized in that: The circulation sedimentation component (3) further comprises a water replenishment mechanism (303) and a flushing mechanism (304); the water replenishment mechanism (303) is used to add water to the sedimentation tank (302) to be connected to the slurry, and the flushing mechanism (304) is used to flush the sedimentation tank (302) for discharging materials; It also includes an angle adjustment mechanism (305) which is installed on the equipment frame (1) and is located on one side of the two sets of chain belt mechanisms (301); The angle adjustment mechanism (305) can control the rotation of the sedimentation tank (302) and discharge the slurry.

3. The urban waste incineration slag resource utilization device according to claim 2 is characterized in that: The resource recovery component (5) comprises a water flow plate (501) arranged obliquely, the sedimentation tank (302) is turned over so that its opening faces downward and is aligned with the water flow plate (501), the bottom wall of the water flow plate (501) is fixedly mounted with electromagnetic triangles (502) arranged in a straight line at equal distances, and also comprises electromagnets (503) of the same number as the electromagnetic triangles (502), and the electromagnets (503) can cause the electromagnetic triangles (502) to generate magnetism when energized; It also includes a flushing pipe (504) installed on the upper end of the water flow plate (501) and used for flushing the water flow plate (501) and the electromagnetic triangle plate (502).

4. The urban waste incineration slag resource utilization device according to claim 3 is characterized in that: The bottom wall of the water flow plate (501) is provided with a plurality of micro holes, which are used to reduce the water content in the slurry in the early stage.

5. The urban waste incineration slag resource utilization device according to claim 2, characterized in that: The stirring assembly (6) comprises a track plate (601), a slide plate (602), a cylinder a (603), an electric turntable (604) and a stirring shaft (605); the slide plate (602) is mounted on the track plate (601) and can actively slide back and forth along the track plate (601); the cylinder a (603) is provided with a plurality of slide plates (602) and is fixed to the slide plate (602); the output ends of the cylinder a (603) are all fixed to the electric turntable (604); the upper ends of the plurality of stirring shafts (605) are fixed to the bottom of the electric turntable (604); and the electric turntable (604) can cause the plurality of stirring shafts (605) to rotate relative to the cylinder a (603) and the slide plate (602).

6. The urban waste incineration slag resource utilization device according to claim 5, characterized in that: One of the stirring assemblies (6) corresponds to a sedimentation tank (302) that has just been connected to the slurry and moved one position, and the track plate (601) of the stirring assembly (6) is fixed to the equipment frame (1).

7. The urban waste incineration slag resource utilization device according to claim 6, characterized in that: Another stirring assembly (6) is connected to the sedimentation tank (302) of the slurry and moves to another position after being stirred by the first stirring assembly (6). The track plate (601) of the stirring assembly (6) is connected to the equipment frame (1) by a cylinder b (606), and the cylinder b (606) is used to change the position of the track plate (601).

8. The urban waste incineration slag resource utilization device according to claim 2, characterized in that: The angle adjustment mechanism (305) comprises a gear (3051) and an arc-shaped rack (3052); the gear (3051) is connected to a hinge between the sedimentation tank (302) and the conveying chain portion; the gear (3051) is fixed to the sedimentation tank (302); the arc-shaped rack (3052) is fixed to the equipment frame (1); after the sedimentation tank (302) moves to the position of the arc-shaped rack (3052), the gear (3051) meshes with the arc-shaped rack (3052); at this time, the bottom end of the sedimentation tank (302) is lifted upward until the opening faces downward, and then the gear (3051) passes over the arc-shaped rack (3052), and the sedimentation tank (302) rotates.

9. The urban waste incineration slag resource utilization device according to claim 8, characterized in that: The flushing mechanism (304), the water replenishing mechanism (303) and the water adding assembly (4) all include a plurality of water spraying pipes (7) fixed together; The water spray pipe (7) of the flushing mechanism (304) is inclined upward and corresponds to the sedimentation tank (302) with an opening facing downward; The water spray pipe (7) of the water replenishment mechanism (303) is tilted downward and corresponds to the sedimentation tank (302) to be used for receiving the slurry; The water adding assembly (4) further comprises a feed pipe (401), the upper end of which is connected to the ash discharge end of the crusher (2), and a water spray pipe (7) is inserted into the feed pipe (401) and tilted downward.

10. A method for resource utilization of urban waste incineration slag, using the urban waste incineration slag resource utilization device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: First, the recovered slag needs to be processed by a crusher (2), and the slag after being processed by the crusher (2) passes through a water adding component (4); S2: The water spray pipe (7) of the water adding assembly (4) sprays water on the passing slag, and the chain belt mechanism (301) operates, that is, the sedimentation tank (302) used to receive the slurry is first filled with water using the water spray pipe (7), and the slurry falls into the sedimentation tank (302) filled with water; S3: After being stirred by two sets of stirring components (6), the material finally moves to the angle adjustment mechanism (305), and then turns over and is discharged under the action of the water spray pipe (7); S4: The slurry falls on the water flow plate (501), and the heavy slag and metal that can be adsorbed are blocked by the electromagnetic triangle plate (502); S5: Finally, the water flow plate (501) is rinsed to collect the heavy slag and precious metals on the top.

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