A high-temperature slag waste heat utilization and slag particle recovery system

Abstract

The present invention discloses a system for utilizing waste heat from high-temperature slag and recovering slag particles, including a phase change heat transfer device, a drive sprocket, a first processing chamber, a second processing chamber, a fan, a spray device, a water tank, a grinding device, a clamping device, an inclined chute, a slag pool, a heat storage tank, and a gas-liquid separator. The phase change heat transfer device is composed of a heat storage body, a hinge, and a closed chain. The closed chain cooperates with the first drive sprocket, the second drive sprocket, the third drive sprocket, and the fourth drive sprocket for transmission. The first drive sprocket, the second drive sprocket, the third drive sprocket, and the fourth drive sprocket are in the same plane and the axes are arranged in parallel. The beneficial effect of the present invention is that the system for utilizing waste heat from high-temperature slag and recovering slag particles of the present invention takes the phase change heat transfer device as the core, and the closed chain drives multiple heat storage bodies to realize continuous heat exchange between the heat storage body and the liquid high-temperature slag. The design of the shape structure of the heat storage body and the internal phase change material improves the heat storage efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of comprehensive utilization of blast furnace slag, and in particular to a system for utilizing waste heat of high-temperature slag and recovering slag particles. Background Art

[0002] Blast furnace slag is one of the main by-products of steel production, accounting for about 30% of the total output of the steel industry. It has a complex composition, mainly composed of mineral components such as CaO, MgO, FeO, MnO, SiO2, Al2O3, etc. During the high-temperature dissolution and chemical reaction of steelmaking, it forms composite oxides mainly composed of tricalcium silicate, dicalcium silicate, free calcium oxide, and free magnesium oxide. It is discharged in a molten state with a furnace temperature of 1450˚C~1550˚C, carrying abundant high-quality waste heat. If blast furnace slag is utilized nationwide, it can save nearly 15 million tons of standard coal, reduce emissions of about 39 million tons of carbon dioxide and a large amount of atmospheric pollutants such as sulfur dioxide and hydrogen sulfide, and alleviate the increasingly serious problem of my country's energy bottleneck. Therefore, efficient recovery of blast furnace slag waste heat is of great significance to improving the energy utilization rate of the steel industry, saving energy and reducing emissions, and is one of the green tasks for building an environmentally friendly society in the future.

[0003] The traditional slag water quenching and rapid cooling process is widely used by steel companies because it can obtain water-quenched slag with high glass content as cement raw material. The water quenching process pours new water on the surface of blast furnace slag to quickly cool it, producing water-quenched slag with a main structure of glass, which can be used to prepare cement raw materials. This technology is mature and safe, but it has shortcomings such as waste of water resources, large workload of equipment operation and maintenance of harmful gases, and large energy consumption for water slag dehydration. Considering that the temperature of slag is extremely high when it is discharged, but the thermal conductivity is low, about 0.1~0.3W / (m·K). Direct heat recovery efficiency is very low, and to improve the heat exchange efficiency, the slag particle size must be minimized. Therefore, the dry process has gradually been valued. It uses specific equipment to crush liquid blast furnace slag into fine solid particles to obtain a larger surface area, thereby making up for the disadvantage of low thermal conductivity of slag, and directly or indirectly exchanging heat with the obtained slag particles through heat recovery medium to achieve the purpose of heat recovery. The dry granulation process can avoid the defects of the water quenching process to a certain extent and obtain particles with better uniformity for subsequent utilization, but there are still problems such as waste heat in the granulation process and low efficiency of high-quality sensible heat recovery. Summary of the invention

[0004] The object of the present invention is to provide a high-temperature slag waste heat utilization and slag particle recovery system to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A high-temperature slag waste heat utilization and slag particle recovery system, comprising a phase change heat transfer device, a drive sprocket, a first processing chamber, a second processing chamber, a fan, a spray device, a water tank, a grinding device, a clamping device, an inclined chute, a slag pool, a heat storage box, and a gas-liquid separator. The phase change heat transfer device is composed of a heat storage body, a hinge, and a closed chain. The closed chain cooperates with a first drive sprocket, a second drive sprocket, a third drive sprocket, and a fourth drive sprocket for transmission. The first drive sprocket, the second drive sprocket, the third drive sprocket, and the fourth drive sprocket are in the same plane and their axes are arranged in parallel. The tooth position in the closed chain matches the tooth shape on the drive sprocket. One end of a plurality of the heat storage bodies is fixed to the closed chain by a hinge, and a certain distance is maintained between the heat storage bodies.

[0007] The first treatment chamber and the second treatment chamber are located above the slag pool, an intermediate passage connected by a pipeline is provided between the first treatment chamber and the second treatment chamber, a conveying opening 1 is provided at the lower part of the first treatment chamber, a spray device is provided at the upper part of the side wall, a fan is provided at the bottom to provide a wind source, a steam outlet is provided at the top, the steam outlet is connected to the inlet of the heat storage tank through a pipeline, the outlet of the heat storage tank is connected to a gas-liquid separator, a gas outlet is provided at the upper part of the gas-liquid separator, and a liquid outlet is provided at the lower part, a conveying opening 2 is provided at the lower part of the second treatment chamber, a grinding device and a clamping device are provided on the wall surface, and an inclined chute is provided at the lower part to guide the material outlet at an inclined lower part;

[0008] The system is provided with a controller for adjusting the working states of the first drive sprocket, the second drive sprocket, the third drive sprocket and the fourth drive sprocket.

[0009] Preferably, the first drive sprocket and the second drive sprocket are fixed in the first treatment chamber and the second treatment chamber respectively, the third drive sprocket is located directly below the first drive sprocket and between the slag pool and the first treatment chamber; the fourth drive sprocket is located directly below the second drive sprocket and between the slag pool and the second treatment chamber;

[0010] Wherein, the first driving sprocket and the second driving sprocket are driving wheels, which are controlled by the controller, and the third driving sprocket and the fourth driving sprocket are driven wheels;

[0011] The driving sprocket is also provided with a displacement device, through which the position can be adjusted according to the depth of the slag pool.

[0012] Preferably, the heat storage body exchanges heat with the high-temperature liquid slag in the slag pool to complete the heat storage process, and the slag pool is provided with a feed inlet for replenishing the slag.

[0013] Preferably, the heat storage body is in the shape of a thin-walled tube, with a wear-resistant coating on the outer surface and a high enthalpy phase change material or a composite phase change material inside.

[0014] Preferably, the spray device comprises a plurality of nozzles which are arranged in a ring shape at equal angles on the wall of the first treatment chamber, and cooling water is supplied from an external water tank through a pipeline.

[0015] Preferably, the grinding device is composed of a mechanical connecting rod and a sanding head. The sanding head is annular and has a toothed surface. The size matches the shape of the heat storage body and is used to extrude and peel off the slag layer on the surface of the heat storage body.

[0016] Preferably, the second processing chamber is provided with a clamping device to fix the heat storage body during the grinding process.

[0017] Preferably, the material outlet of the second processing chamber is connected to a slag particle collector through a pipeline.

[0018] Preferably, the first transmission opening, the second transmission opening and the channel connection position of the middle channel are all made of flexible sealing materials.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The high-temperature slag waste heat utilization and slag particle recovery system of the present invention takes the phase change heat transfer device as the core, and drives multiple heat storage bodies in a closed chain to achieve continuous heat exchange between the heat storage body and the liquid high-temperature slag. The shape structure of the heat storage body and the design of the internal phase change material improve the heat storage efficiency;

[0021] 2. Multiple nozzles are arranged on the wall of the first treatment chamber to accelerate the heat release process of the heat storage body by evaporating atomized water. At the same time, the hot air and water vapor discharged by heat exchange provide heat to the heat storage tank. The medium-temperature air and liquid water can also be used for dehumidification and heating, thereby improving energy utilization;

[0022] 3. Obtain high-performance slag particles with fast cooling speed and appropriate glass content, which is convenient for subsequent material recycling. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic structural diagram of a high-temperature slag waste heat utilization and slag particle recovery system provided in an embodiment of the present invention.

[0024] In the figure: 10, first treatment chamber; 11, fan; 12, spray device; 13, conveying opening 1; 14, steam outlet; 15, intermediate channel; 20, second treatment chamber; 21, grinding device; 22, clamping device; 23, inclined chute; 24, material outlet; 25, conveying opening 2; 30, phase change heat transfer device; 31, heat storage body; 32, hinge; 33, closed chain; 40, slag pool; 41, feed inlet; 42, liquid slag; 50, heat storage box; 60, gas-liquid separator; 61, gas outlet; 62, liquid outlet; 70, water tank; 81, first drive sprocket; 82, second drive sprocket; 83, third drive sprocket; 84, fourth drive sprocket; 90, slag particle collector. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the specification of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0028] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that an article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0029] In the description of the present application, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0030] In the description of this application, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and the features in the embodiments can be mutually exclusive.

[0032] See also Figure 1 The present invention provides a technical solution: a high-temperature slag waste heat utilization and slag particle recovery system, including a phase change heat transfer device 30, a driving sprocket, a first processing chamber 10, a second processing chamber 20, a fan 11, a spray device 12, a water tank 70, a grinding device 21, a clamping device 22, an inclined chute 23, a slag pool 40, a heat storage tank 50, and a gas-liquid separator 60. The phase change heat transfer device 30 is composed of a heat storage body 31, a hinge 32, and a closed chain 33. The closed chain 33 The first drive sprocket 81, the second drive sprocket 82, the third drive sprocket 83 and the fourth drive sprocket 84 are in the same plane and the axes are arranged in parallel. The tooth position in the closed chain 33 matches the tooth shape on the drive sprocket. One end of the plurality of heat storage bodies 31 is fixed on the closed chain 33 by a hinge 32, and a certain distance is maintained between the heat storage bodies 31.

[0033] The first treatment chamber 10 and the second treatment chamber 20 are located above the slag pool 40. An intermediate passage 15 connected by a pipeline is provided between the first treatment chamber 10 and the second treatment chamber 20. A conveying opening 13 is provided at the lower part of the first treatment chamber 10, a spray device 12 is provided at the upper part of the side wall, a fan 11 is provided at the bottom to provide a wind source, and a steam outlet 14 is provided at the top. The steam outlet 14 is connected to the inlet of the heat storage tank 50 through a pipeline. The outlet of the heat storage tank 50 is connected to the gas-liquid separator 60. The gas-liquid separator 60 is provided with a gas outlet at the top. 61, a liquid outlet 62 is provided at the bottom, a conveying opening 25 is provided at the bottom surface of the second processing chamber 20, a grinding device 21 and a clamping device 22 are provided on the wall surface, the grinding device 21 is composed of a mechanical connecting rod and a grinding ball, the surface of the grinding ball is toothed, and is used to squeeze and peel off the slag layer on the surface of the heat storage body 31, and the clamping device 22 is composed of a mechanical connecting rod and a clamp, and is used to fix the heat storage body 31 when grinding the surface slag; at the same time, an inclined chute 23 is provided at the bottom of the second processing chamber 20, and the inclined chute 23 leads to the material outlet 24 at an angle below;

[0034] The system is provided with a controller for adjusting the working states of the first drive sprocket 81, the second drive sprocket 82, the third drive sprocket 83 and the fourth drive sprocket 84, wherein when the drive sprocket rotates, the heat storage body 31 is driven along with the closed chain 33, and when the drive sprocket is stationary, the closed chain 33 stops driving, and the heat storage body 31 stays in the slag pool 40, the first processing chamber 10 or the second processing chamber 20 to complete the heat storage, heat release and material removal processes.

[0035] Among them, the water vapor obtained in the first treatment chamber 10 is discharged from the steam outlet 14 at the top of the first treatment chamber 10 to the heat storage tank 50 under the action of the wind blown by the fan 11, and the hot air mixed with the water vapor exchanges heat with the heat storage tank 50, the water vapor condenses, and the temperature of the hot air drops. The medium-temperature air mixed with liquid water is discharged from the outlet of the heat storage tank 50 and enters the gas-liquid separator 60, the medium-temperature air is discharged from the top gas outlet 61 for dehumidification, and the medium-temperature liquid water is discharged from the bottom liquid outlet 62 for heating.

[0036] Further, the first driving sprocket 81 and the second driving sprocket 82 are respectively fixed in the first processing chamber 10 and the second processing chamber 20, the third driving sprocket 83 is located directly below the first driving sprocket 81 and between the slag pool 40 and the first processing chamber 10; the fourth driving sprocket 84 is located directly below the second driving sprocket 82 and between the slag pool 40 and the second processing chamber 20;

[0037] The first driving sprocket 81 and the second driving sprocket 82 are driving wheels, which are controlled by the controller, and the third driving sprocket 83 and the fourth driving sprocket 84 are driven wheels;

[0038] The driving sprocket is also provided with a displacement device, through which the position can be adjusted according to the depth of the slag pool 40.

[0039] Among them, the closed chain 33, hinge 32 and heat storage body 31, under the action of the driving sprocket, pass through the connecting pipe of the middle channel 15 between the two chambers, the second driving sprocket 82, the transmission opening 25 of the second processing chamber 20, the fourth driving sprocket 84, the third driving sprocket 83, the transmission opening 13 of the first processing chamber 10, and finally return to the first driving sprocket 81; and the transmission opening 13 position, the transmission opening 25 and the channel connection position of the middle channel 15 are all made of flexible sealing materials. When the driving sprocket rotates, the sealing device does not hinder the passage of the phase change heat transfer device 30; when the driving sprocket is stationary, the sealing device plays a sealing role to prevent the overflow of steam.

[0040] Furthermore, the heat storage body 31 completes the heat storage process by exchanging heat with the high-temperature liquid slag 42 in the slag pool 40. In the process of driving the sprocket to lift the heat storage body 31 from the slag pool 40 to the conveying opening 13 of the first processing chamber 10, due to the action of gravity, the liquid slag 42 on the surface of the heat storage body 31 falls back to the slag pool 40, and a small amount of slag adheres to the surface of the heat storage body 31 and solidifies; after the heat storage body 31 enters the first processing chamber 10, the spray device 12 sprays water droplets on the surface of the heat storage body 31. After the heat exchange, the water droplets evaporate into water vapor, and the heat storage body 31 completes the heat release process. The heat storage body 31 that has released heat enters the second processing chamber 20, and the grinding device 21 acts on the surface of the heat storage body 31 to peel off the solid slag. The peeled slag particles fall on the inclined chute 23 and move to the material outlet 24 under the action of gravity for discharge. The slag pool 40 is provided with a feed inlet 41 for replenishing slag.

[0041] Furthermore, the heat storage body 31 is in the shape of a thin-walled tube, with a wear-resistant coating on the outer surface and a high enthalpy phase change material or a composite phase change material inside.

[0042] Furthermore, the spray device 12 includes a plurality of nozzles which are arranged in a ring shape at equal angles on the wall of the first treatment chamber 10, and cooling water is supplied from an external water tank 70 through a pipeline.

[0043] Furthermore, the grinding device 21 is composed of a mechanical connecting rod and a sanding head. The sanding head is annular and has a toothed surface. The size matches the shape of the heat storage body 31 and is used to extrude and peel off the slag layer on the surface of the heat storage body 31.

[0044] Furthermore, the second processing chamber 20 is provided with a clamping device 22 to fix the heat storage body 31 during the grinding process.

[0045] Furthermore, the material outlet 24 of the second processing chamber 20 is connected to the slag collector 90 through a pipeline, and the recovered slag is used to prepare cement or composite phase change material.

[0046] Specifically, when in use, the slag pool 40 contains liquid blast furnace molten slag 42. When the heat storage body 31 moves between the fourth drive sprocket 84 and the third drive sprocket 83, the heat storage body 31 is completely immersed in the liquid slag 42. When the drive sprocket is working, the heat storage body 31 passes through the slag pool 40, the first processing chamber 10, the second processing chamber 20, and the slag pool 40 in sequence, forming a closed path. The heat storage body 31 exchanges heat with the high-temperature liquid slag 42 in the slag pool 40 to complete the heat storage process. When the closed chain 33 is driven, the heat storage body 31 rises from the slag pool 40 to the heat exchange opening of the first processing chamber 10. Due to the effect of gravity, the surface of the heat storage body 31 The liquid slag 42 falls back into the slag pool 40, and a small amount of slag adheres to the surface of the heat storage body 31 and solidifies. After the heat storage body 31 enters the first processing chamber 10, the spray device 12 sprays water droplets on the surface of the heat storage body 31. After heat exchange, the water droplets evaporate into water vapor, and the heat storage body 31 completes heat release. The heat storage body 31 that has completed heat release enters the second processing chamber 20, and the clamping device 22 fixes the position of the heat storage body 31. The grinding device 21 acts on the surface of the heat storage body 31. The grinding balls roll from left to right along the surface of the heat storage body 31 to peel off the solid slag. The peeled slag particles fall on the inclined chute 23 and move to the material outlet 24 under the action of gravity and are discharged into the slag particle collector 90.

[0047] Among them, after the grinding treatment, the heat storage body 31 returns to the slag pool 40 along the closed chain 33 through the conveying opening 25 at the bottom of the second processing chamber 20. The whole process realizes the utilization of high-grade waste heat of blast furnace slag and the recovery of solid slag particles through the heat storage process, heat release process and surface grinding process of the heat storage body 31.

[0048] Among them, the water vapor obtained in the first treatment chamber 10 is discharged from the steam outlet 14 at the top of the first treatment chamber 10 to the heat storage tank 50 under the action of the wind blown by the axial flow fan 11, and the hot air mixed with the water vapor exchanges heat with the heat storage tank 50, the water vapor condenses, and the temperature of the hot air drops. The medium-temperature air mixed with liquid water is discharged from the outlet of the heat storage tank 50 and enters the gas-liquid separator 60. The medium-temperature air is discharged from the top gas outlet 61 for dehumidification, and the medium-temperature liquid water is discharged from the bottom liquid outlet 62 for heating.

[0049] In this embodiment, the phase change heat transfer device 30 is used as the core, and the closed chain 33 drives multiple heat storage bodies 31 to achieve continuous heat exchange between the heat storage body 31 and the liquid high-temperature slag. The shape structure of the heat storage body 31 and the design of the internal phase change material improve the heat storage efficiency. Multiple nozzles are arranged on the wall of the first processing chamber 10 to accelerate the heat release process of the heat storage body 31 through the evaporation of atomized water. At the same time, after the hot air and water vapor discharged by heat exchange provide heat to the heat storage tank 50, the medium-temperature air and liquid water can also be used for dehumidification and heating, which improves the energy utilization rate, obtains high-performance slag particles with fast cooling speed and appropriate glass content, and is convenient for subsequent material recycling.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-temperature slag waste heat utilization and slag particle recovery system, characterized in that: The invention comprises a phase change heat transfer device (30), a driving sprocket, a first processing chamber (10), a second processing chamber (20), a fan (11), a spray device (12), a water tank (70), a grinding device (21), a clamping device (22), an inclined chute (23), a slag pool (40), a heat storage tank (50), and a gas-liquid separator (60). The phase change heat transfer device (30) comprises a heat storage body (31), a hinge (32), and a closed chain (33). The closed chain (33) is connected to the first driving sprocket (81), The second drive sprocket (82), the third drive sprocket (83), and the fourth drive sprocket (84) cooperate for transmission; the first drive sprocket (81), the second drive sprocket (82), the third drive sprocket (83), and the fourth drive sprocket (84) are located in the same plane and their axes are arranged in parallel; the tooth positions in the closed chain (33) match the tooth shapes on the drive sprockets; one end of the plurality of heat storage bodies (31) is fixed to the closed chain (33) via a hinge (32); and a certain distance is maintained between the heat storage bodies (31); The first treatment chamber (10) and the second treatment chamber (20) are located above the slag pool (40), and an intermediate passage (15) connected by a pipeline is provided between the first treatment chamber (10) and the second treatment chamber (20). A conveying opening (13) is provided at the lower part of the first treatment chamber (10), a spray device (12) is provided at the upper part of the side wall, a fan (11) is provided at the bottom to provide a wind source, and a steam outlet (14) is provided at the top. The steam outlet (14) is connected to the inlet of the heat storage tank (50) through a pipeline, and the outlet of the heat storage tank (50) is connected to the gas-liquid separator (60). The gas-liquid separator (60) is provided with a gas outlet (61) at the upper part and a liquid outlet (62) at the lower part. A conveying opening (25) is provided at the lower part of the second treatment chamber (20), a grinding device (21) and a clamping device (22) are provided on the wall surface, and an inclined chute (23) is provided at the lower part to guide the material outlet (24) at an inclined lower part. The system is provided with a controller for adjusting the working states of the first drive sprocket (81), the second drive sprocket (82), the third drive sprocket (83) and the fourth drive sprocket (84); The heat storage body (31) exchanges heat with the high-temperature liquid slag (42) in the slag pool (40) to complete the heat storage process. The slag pool (40) is provided with a feed inlet (41) for replenishing the slag. The heat storage body (31) is in the shape of a thin-walled tube, with a wear-resistant coating provided on the outer surface and a high enthalpy phase change material or a composite phase change material inside.

2. A high-temperature slag waste heat utilization and slag particle recovery system according to claim 1, characterized in that: The first drive sprocket (81) and the second drive sprocket (82) are respectively fixed in the first processing chamber (10) and the second processing chamber (20); the third drive sprocket (83) is located directly below the first drive sprocket (81) and between the slag pool (40) and the first processing chamber (10); the fourth drive sprocket (84) is located directly below the second drive sprocket (82) and between the slag pool (40) and the second processing chamber (20); The first drive sprocket (81) and the second drive sprocket (82) are driving wheels controlled by a controller, and the third drive sprocket (83) and the fourth drive sprocket (84) are driven wheels; The driving sprocket is also provided with a displacement device, through which the position can be adjusted according to the depth of the slag pool (40).

3. A high-temperature slag waste heat utilization and slag particle recovery system according to claim 1, characterized in that: The spray device (12) comprises a plurality of nozzles which are arranged in a ring shape at equal angles on the wall surface of the first treatment chamber (10), and cooling water is supplied from an external water tank (70) through a pipeline.

4. A high-temperature slag waste heat utilization and slag particle recovery system according to claim 1, characterized in that: The grinding device (21) is composed of a mechanical connecting rod and a grinding head. The grinding head is annular and has a toothed surface. The size matches the shape of the heat storage body (31) and is used to extrude and peel off the slag layer on the surface of the heat storage body (31).

5. A high-temperature slag waste heat utilization and slag particle recovery system according to claim 4, characterized in that: The second processing chamber (20) is provided with a clamping device (22) for fixing the heat storage body (31) during the grinding process.

6. A high-temperature slag waste heat utilization and slag particle recovery system according to claim 5, characterized in that: The material outlet (24) of the second processing chamber (20) is connected to the slag particle collector (90) through a pipeline.

7. A high-temperature slag waste heat utilization and slag particle recovery system according to claim 6, characterized in that: The first transmission opening (13), the second transmission opening (25) and the channel connection position of the middle channel (15) are all made of flexible sealing materials.

Images