Smelting slag waste heat utilization assembly

Abstract

The invention discloses a smelting slag waste heat utilization assembly which comprises a heat exchange device, a first channel and a second channel are formed in the heat exchange device, the first channel communicates with a mixing device, the second channel is suitable for exchanging heat with the first channel, a first outlet is formed in the first channel, and a second outlet is formed in the second channel; an inlet of the first heat utilization assembly communicates with the second outlet, and the first heat utilization assembly is suitable for exchanging heat with steam generated in the second channel; an inlet of the second heat utilization assembly communicates with the first outlet, and the second heat utilization assembly is suitable for exchanging heat with steam generated in the first channel. According to the smelting slag waste heat utilization assembly, the first heat utilization assembly exchanges heat with steam generated in the second channel, and the second heat utilization assembly exchanges heat with steam generated in the first channel, so that slag waste heat is efficiently recycled, waste of slag energy is reduced, and economic benefits are improved.

Description

Technical Field

[0001] The present invention relates to the technology and field of comprehensive utilization of thermal energy, and in particular to a smelting slag waste heat utilization component. Background Art

[0002] In the related technologies, with the development of modern industry, the slag waste heat generated in the smelting process has become a very valuable energy resource. In order to make better use of this energy resource, the smelting industry has adopted a variety of slag waste heat recovery technologies. Traditional slag waste heat recovery generally adopts two methods: wet process and dry process. However, these two methods have low recovery efficiency and recovery amount for slag waste heat, resulting in a large amount of heat waste in the slag waste heat. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present invention is to provide a smelting slag waste heat utilization component. The smelting slag waste heat utilization component according to the present invention exchanges heat between the first heat utilization component and the steam generated in the second channel, and the second heat utilization component exchanges heat with the steam generated in the first channel, thereby efficiently recovering and utilizing the slag waste heat, reducing the waste of energy in the slag and improving the economic benefits.

[0004] The smelting slag waste heat utilization component according to the present invention includes: a mixing device, which is suitable for mixing slag with water to produce a slag mixture; a heat exchange device, on which a first channel and a second channel are formed, the first channel is connected to the mixing device, the first channel is suitable for the flow of the slag mixture, the second channel is suitable for the flow of a cooling medium, the second channel is suitable for heat exchange with the first channel, a first outlet is formed on the first channel, and a second outlet is formed on the second channel; a first heat utilization component, the inlet of the first heat utilization component is connected to the second outlet, the first heat utilization component is suitable for heat exchange with steam generated in the second channel, and the outlet of the first heat utilization component is connected to the second channel; a second heat utilization component, the inlet of the second heat utilization component is connected to the first outlet, the second heat utilization component is suitable for heat exchange with steam generated in the first channel, and the outlet of the second heat utilization component is connected to the mixing device.

[0005] The smelting slag waste heat utilization component according to the present invention generates a steam and slag mixture through a mixing device, a first channel connected to the mixing device and a second channel for heat exchange with the first channel are formed in the heat exchange device, the slag mixture enters the first channel and exchanges heat with the cooling medium in the second channel, the cooling medium generates high-pressure steam and flows to the first heat utilization component for utilization, the slag mixture in the first channel flows into the second heat utilization component together with the steam for utilization, so as to efficiently recover and utilize the waste heat in the slag, reduce energy waste, alleviate energy pressure, and at the same time, improve the economic benefits of the enterprise.

[0006] According to some embodiments of the present invention, the first heat utilization component includes: a power generation device, on which a third channel connected to the second outlet is formed, and the steam in the second channel is suitable for being converted into electrical energy in the third channel; a first heat exchanger, the inlet end of the first heat exchanger is connected to the third channel, and a receiving chamber suitable for accommodating a medium to be heated is formed in the first heat exchanger, the medium to be heated in the receiving chamber is suitable for heat exchange with the steam in the third channel, and the outlet end of the first heat exchanger is connected to the second channel.

[0007] According to some embodiments of the present invention, the second heat utilization component includes: a separation device, on which is formed an inlet connected to the first outlet and an outlet connected to the mixing device, and the separation device is suitable for separating the gas, solid and liquid in the slag mixture.

[0008] According to some embodiments of the present invention, the separation device includes: a solid-gas separation device, the solid-gas separation device is formed with the inlet, the solid-gas separation device is suitable for separating the gas and solid in the slag mixture, and the solid outlet end and the gas outlet end are respectively formed on the solid-gas separation device; a solid-liquid separation device, the solid-liquid separation device is connected to the solid outlet end, the solid-liquid separation device is suitable for separating the solid and liquid in the slag mixture, and the solid-liquid separation device is formed with the outlet connected to the mixing device.

[0009] According to some embodiments of the present invention, the second heat utilization component also includes: a compressor, which is connected to the gas outlet end and is suitable for converting the thermal energy in the steam transported from the gas outlet end into mechanical energy; a second heat exchanger, the inlet end of the second heat exchanger is connected to the compressor, a accommodating cavity suitable for accommodating the medium to be heated is formed in the second heat exchanger, the medium to be heated in the accommodating cavity is suitable for heat exchange with the steam generated in the compressor, and the outlet end of the second heat exchanger is connected to the solid-liquid separation device.

[0010] According to some embodiments of the present invention, a holding space is formed in the solid-liquid separation device, and the solid-liquid separation device includes: an overflow plate, which is arranged in the holding space and divides the holding space into a solid storage space and a liquid storage space, and a through hole suitable for liquid to pass through is formed on the overflow plate; and a filter screen, which is arranged in the solid storage space and is suitable for preventing solid slag in the slag mixture from falling into the liquid storage space.

[0011] According to some embodiments of the present invention, a slag channel and a high-pressure water channel are provided in the mixing device, and the high-pressure water channel is connected to the first channel and the slag channel respectively. The angle between the high-pressure water channel and the slag channel is α, and satisfies: 30°≤α≤45°.

[0012] According to some embodiments of the present invention, the heat exchange device includes: a guide plate, which is arranged on the inner wall of the first channel and is radially inclined in a direction of the high-pressure water channel toward the first outlet.

[0013] According to some embodiments of the present invention, the guide plate is configured as a plurality of guide plates that are sequentially spaced apart from each other in a direction from the high-pressure water channel toward the first outlet.

[0014] According to some embodiments of the present invention, the heat exchange device further includes: a buffer component, which is arranged at the connection point between the high-pressure water channel and the first channel.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 It is a schematic structural diagram of a smelting slag waste heat utilization component according to an embodiment of the present invention.

[0018] Reference numerals:

[0019] 100. Components for utilizing waste heat from smelting slag;

[0020] 11. High-pressure water channel; 12. Slag channel;

[0021] 21. heat exchange device; 201. first channel; 202. second channel;

[0022] 31. Power generation device; 32. Compressor; 33. First heat exchanger; 34. Second heat exchanger;

[0023] 41. Solid-gas separation device; 42. Solid-liquid separation device; 401. Liquid storage space; 402. Solid storage space. DETAILED DESCRIPTION

[0024] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0025] In the related technologies, with the development of modern industry, the slag waste heat generated in the smelting process has become a very valuable energy resource. In order to make better use of this energy resource, the smelting industry has adopted a variety of slag waste heat recovery technologies. Traditional slag waste heat recovery generally adopts two methods: wet process and dry process. However, these two methods have low recovery efficiency and recovery amount for slag waste heat, resulting in a large amount of heat waste in the slag waste heat.

[0026] Reference below Figure 1 A smelting slag waste heat utilization component according to an embodiment of the present invention is described.

[0027] The smelting slag waste heat utilization component 100 according to the present invention includes: a mixing device, a heat exchange device 21, a first heat utilization component and a second heat utilization component, the mixing device is suitable for mixing slag with water and generating a slag mixture; a first channel 201 and a second channel 202 are formed on the heat exchange device 21, the first channel 201 is connected to the mixing device, the first channel 201 is suitable for the flow of the slag mixture, the second channel 202 is suitable for the flow of the cooling medium, the second channel 202 is suitable for heat exchange with the first channel 201, a first outlet is formed on the first channel 201, and a second outlet is formed on the second channel 202; the inlet of the first heat utilization component is connected to the second outlet, the first heat utilization component is suitable for heat exchange with the steam generated in the second channel 202, and the outlet of the first heat utilization component is connected to the second channel 202; the inlet of the second heat utilization component is connected to the first outlet, the second heat utilization component is suitable for heat exchange with the steam generated in the first channel 201, and the outlet of the second heat utilization component is connected to the mixing device.

[0028] In some specific embodiments, the smelting slag waste heat utilization component 100 is composed of a mixing device, a heat exchange device 21, a first heat utilization component and a second heat utilization component. The high-temperature slag discharged from the metallurgical furnace is mixed with water in the mixing device, cooled and granulated, and then injected into the heat exchange device 21 at a high speed. A first channel 201 connected to the mixing device is formed in the heat exchange device 21. A large amount of steam is generated when the slag is mixed with water. The steam and slag mixture moves in the first channel 201. Since a second channel 202 is also formed in the heat exchange device 21, a heat exchange surface is formed between the second channel 202 and the first channel 201. A cooling medium flows in the second channel 202. The cooling medium in the second channel 202 absorbs the heat in the first channel 201 through the heat exchange surface and produces high-pressure steam. The high-pressure steam flows to the first heat utilization component through a second outlet formed on the second channel 202. The heat utilization component can exchange heat with the high-pressure steam in the second channel 202 and make full use of the heat in the high-pressure steam, so that the high-pressure steam is cooled to become condensed water and then flows back to the second channel 202 through the outlet of the first heat utilization component; the slag mixture in the first channel 201 flows into the second heat utilization component through the first outlet together with the steam, and the second heat utilization component can exchange heat with the high-pressure steam in the first channel 201 and make full use of the heat in the high-pressure steam, so that the high-pressure steam is cooled to become condensed water and then flows into the mixing device through the outlet of the second heat utilization component for secondary utilization. The heat generated by the slag mixture in the present application is recycled in the first heat utilization component and the second heat utilization component to efficiently recycle the waste heat in the slag, thereby reducing energy waste, alleviating energy pressure, and at the same time, improving the economic benefits of the enterprise.

[0029] According to the smelting slag waste heat utilization component 100 of the present invention, a steam and slag mixture is generated by a mixing device, and a first channel 201 connected to the mixing device and a second channel 202 for heat exchange with the first channel 201 are formed in the heat exchange device 21. The slag mixture enters the first channel 201 and exchanges heat with the cooling medium in the second channel 202. The cooling medium generates high-pressure steam and flows to the first heat utilization component for utilization. The slag mixture in the first channel 201 flows into the second heat utilization component together with the steam for utilization, so as to efficiently recover and utilize the waste heat in the slag, reduce energy waste, alleviate energy pressure, and at the same time, improve the economic benefits of the enterprise.

[0030] According to some embodiments of the present invention, the first heat utilization component includes: a power generation device 31 and a first heat exchanger 33, the power generation device 31 is formed with a third channel connected to the second outlet, the steam in the second channel 202 is suitable for being converted into electrical energy in the third channel; the inlet end of the first heat exchanger 33 is connected to the third channel, and a receiving cavity suitable for accommodating a medium to be heated is formed in the first heat exchanger 33, the medium to be heated in the receiving cavity is suitable for heat exchange with the steam in the third channel, and the outlet end of the first heat exchanger 33 is connected to the second channel 202.

[0031] In some specific embodiments, the first heat utilization component is composed of a power generation device 31 and a first heat exchanger 33. The power generation device 31 can be constructed as a steam turbine. The steam turbine is provided with a third channel connected to the second channel 202 for receiving high-temperature steam discharged from the second channel 202. An impeller is provided in the third channel. The impeller rotates under the action of high-pressure steam and generates electricity. The high-pressure steam used by the power generation device 31 becomes low-pressure steam and flows into the first heat exchanger 33. A receiving chamber is formed in the first heat exchanger 33. A hydrometallurgical solution can be placed in the receiving chamber. The hydrometallurgical solution can perform heat exchange with the low-pressure steam flowing out of the third channel, so that the low-pressure steam becomes condensed water and flows back to the second channel 202.

[0032] According to some embodiments of the present invention, the second heat utilization component includes: a separation device, on which is formed an inlet connected to the first outlet to receive the slag mixture discharged from the first channel 201. The slag mixture usually contains a mixed flow of high-temperature steam, solid slag particles and water. The separation device separates the gas, solid and liquid in the slag mixture by physical methods. This separation process can be based on different physical properties, such as density, size and phase state. The separated phases are easier to carry out subsequent processing and utilization. The separation device is also formed with an outlet connected to the mixing device so that the separated liquid (usually water) can be returned to the mixing device to participate in the circulation again.

[0033] According to some embodiments of the present invention, the separation device includes: a solid-gas separation device 41 and a solid-liquid separation device 42. The solid-gas separation device 41 is formed with an inlet, and the solid-gas separation device 41 is connected to the first channel 201. Since the gas density in the slag mixture is relatively small and the solid-liquid and liquid densities are relatively large, the solid-gas separation device 41 can separate the gas and solid in the slag mixture. A solid outlet end and a gas outlet end are respectively formed on the solid-gas separation device 41, so that the separated solid and gas can flow to different equipment through different outlets for utilization; the solid-liquid separation device 42 is connected to the solid outlet end, and the solid-liquid separation device 42 is suitable for separating the solid and liquid in the slag mixture. An outlet connected to the mixing device is formed on the solid-liquid separation device 42, and the separated liquid flows into the mixing device through the outlet for reuse.

[0034] According to some embodiments of the present invention, the second heat utilization component also includes: a compressor 32 and a second heat exchanger 34, the compressor 32 is connected to the gas outlet end, and the compressor 32 is suitable for converting the thermal energy in the steam transported from the gas outlet end into mechanical energy; a second heat exchanger 34, the inlet end of the second heat exchanger 34 is connected to the compressor 32, and a accommodating cavity suitable for accommodating the medium to be heated is formed in the second heat exchanger 34, the medium to be heated in the accommodating cavity is suitable for heat exchange with the steam generated in the compressor 32, and the outlet end of the second heat exchanger 34 is connected to the solid-liquid separation device 42. In some specific embodiments, the second heat utilization component is composed of a compressor 32 and a second heat exchanger 34. The compressor 32 is formed with a gas outlet end connected to the solid-gas separation device 41 for receiving steam discharged from the solid-gas separation device 41. The high-temperature steam undergoes heat exchange inside the compressor 32. The compressor 32 converts thermal energy into mechanical energy. The high-pressure steam after being used by the compressor 32 becomes low-pressure steam and flows into the second heat exchanger 34. A accommodating cavity is formed in the second heat exchanger 34. A hydrometallurgical solution can be placed in the accommodating cavity. The hydrometallurgical solution can exchange heat with the low-pressure steam, absorb the heat in the low-pressure steam, and convert the low-pressure steam into condensed water and flow into the solid-liquid separation device 42.

[0035] According to some embodiments of the present invention, a storage space is formed in the solid-liquid separation device 42, and the solid-liquid separation device 42 includes: an overflow plate and a filter screen, the overflow plate is arranged in the storage space and divides the storage space into a solid storage space 402 and a liquid storage space 401, and a through hole suitable for liquid to pass through is formed on the overflow plate, the through hole can allow liquid to pass through, and prevent larger solid particles from passing through, the overflow plate can quickly separate the liquid and solid in the slag mixture, the liquid flows from the through hole to the liquid storage space 401, and prevents the solid particles from flowing with the liquid, thereby ensuring the liquid storage. Cleanliness of the liquid in space 401; the filter is arranged in the solid storage space 402, and is suitable for preventing the solid slag in the slag mixture from falling into the liquid storage space 401, the filter can further ensure that the solid particles are intercepted, even if a small amount of fine solid particles pass through the holes on the overflow plate, the filter can also serve as a second line of defense to prevent them from entering the liquid storage space 401, the mesh size of the filter can be changed according to specific needs, the presence of the filter improves the efficiency and purity of solid-liquid separation in the slag mixture, and ensures that the liquid in the liquid storage space 401 is as clean as possible.

[0036] According to some embodiments of the present invention, a slag channel 12 and a high-pressure water channel 11 are provided in the mixing device. The high-pressure water channel 11 is connected to the first channel 201 and the slag channel 12 respectively. The angle between the high-pressure water channel 11 and the slag channel 12 is α, and satisfies: 30°≤α≤45°.

[0037] In some specific embodiments, the slag channel 12 is inclined relative to the high-pressure water channel 11. When the angle α between the slag channel 12 and the high-pressure water channel 11 is in the above-mentioned range of 30°≤α≤45°, on the one hand, the unidirectional flow of slag and water can be ensured, and the backflow of slag and water can be effectively prevented. On the other hand, when the high-pressure water flow hits the slag at a certain angle, a stronger turbulence effect can be generated. This turbulence helps to effectively mix the water and slag together, improve the heat exchange efficiency, and the mixing in the turbulent state is more uniform, so that the heat can be transferred from the slag to the water faster and more evenly.

[0038] According to some embodiments of the present invention, the heat exchange device 21 includes: a guide plate, which is arranged on the inner wall of the first channel 201 and is radially inclined in the direction of the high-pressure water channel 11 toward the first outlet.

[0039] In some specific embodiments, a guide plate is further provided in the first channel 201, and the guide plate is inclined toward the first outlet. The guide plate can increase the complexity of the fluid flow and cause the fluid to generate more turbulence. Under the turbulent state, the heat transfer inside the fluid is more sufficient, thereby improving the heat exchange efficiency between the first channel 201 and the second channel 202. By changing the water flow path, the guide plate can help to distribute the slag mixture entering the first channel 201 more evenly over the entire channel cross-section, ensuring that the first channel 201 and the second channel 202 can fully exchange heat at each position. The inclined guide plate can make the fluid flow in a spiral or other form along the surface of the heat exchanger, thereby increasing the effective area actually involved in the heat exchange and further improving the overall heat exchange performance of the heat exchange device 21. The guide plate can also help prevent particulate matter from accumulating at the bottom of the pipe, ensuring the cleanliness of the first channel 201, effectively preventing the first channel 201 from being blocked, and ensuring the stability and reliability of the operation of the smelting slag waste heat utilization component 100.

[0040] According to some embodiments of the present invention, the guide plate is constructed as a plurality of guide plates arranged in sequence from the high-pressure water channel 11 toward the first outlet. The plurality of guide plates can further increase the complexity of the fluid flow and promote stronger turbulence. The turbulence helps to improve the heat exchange efficiency between the slag and water. By providing a plurality of guide plates, the slag mixture can be more evenly distributed over the entire cross-section of the first channel 201, ensuring that the heat exchange surface between the first channel 201 and the second channel 202 is fully utilized, thereby improving the overall heat exchange effect of the heat exchange device 21. The plurality of guide plates allow the fluid to flow in a spiral or other form along the inner wall of the first channel 201, increasing the effective area of ​​the first channel 201 that actually participates in heat exchange with the slag mixture. Each guide plate provides a new heat exchange interface, further improving the overall performance of the heat exchange device 21. The guide plates can change the flow path of the fluid and help flush out solid particles (such as slag) that may accumulate at the bottom of the first channel 201. The plurality of guide plates can more effectively prevent slag deposition, reduce the risk of blockage of the first outlet, and keep the first channel 201 clean and unobstructed.

[0041] According to some embodiments of the present invention, the heat exchange device 21 also includes: a buffer, which is arranged at the connection between the high-pressure water channel 11 and the first channel 201. When the high-pressure water flow enters the first channel 201, due to the fast flow rate, it may cause direct impact on the channel wall, which may cause material wear in the long run. The buffer can reduce the impact force on the wall of the first channel 201 by changing the direction of the water flow or slowing down the speed of the water flow, thereby protecting the equipment from damage. At the same time, since the buffer slows down the flow rate of the water flow, the slag mixture can flow in the first channel 201 for a period of time, thereby making the heat exchange between the first channel 201 and the second channel 202 more sufficient. The buffer can help disperse the water flow so that the high-pressure water can contact the slag mixture more evenly, thereby improving the heat exchange efficiency. If the water flow is too concentrated, it may cause local overheating or uneven mixing, affecting the overall heat recovery effect. Through properly designed buffers, it can also play a role in regulating flow and pressure, thereby further improving the heat exchange effect between slag and water.

[0042] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0043] In the description of the present invention, "first feature" or "second feature" may include one or more of the features. In the description of the present invention, "plurality" means two or more.

[0044] In the description of the present invention, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0045] In the description of the present invention, “on”, “over” and “above” a first feature from a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0046] In the description of this specification, reference to the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention.

[0047] 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.

[0048] Although the 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 claims and their equivalents.

Claims

1. A smelting slag waste heat utilization component, characterized in that: include: a mixing device adapted to mix slag with water and produce a slag mixture; A heat exchange device (21), wherein a first channel (201) and a second channel (202) are formed on the heat exchange device (21), the first channel (201) is connected to the mixing device, the first channel (201) is suitable for the slag mixture to flow, the second channel (202) is suitable for the cooling medium to flow, the second channel (202) is suitable for heat exchange with the first channel (201), the first channel (201) is formed with a first outlet, and the second channel (202) is formed with a second outlet; a first heat utilization component, wherein the inlet of the first heat utilization component is in communication with the second outlet, the first heat utilization component is suitable for exchanging heat with the steam generated in the second channel (202), and the outlet of the first heat utilization component is in communication with the second channel (202); A second heat utilization component, the inlet of which is connected to the first outlet, the second heat utilization component is suitable for exchanging heat with the steam generated in the first channel (201), and the outlet of the second heat utilization component is connected to the mixing device.

2. The smelting slag waste heat utilization component according to claim 1, characterized in that: The first heat utilization component comprises: A power generation device (31), wherein a third channel connected to the second outlet is formed on the power generation device (31), and the steam in the second channel (202) is suitable for being converted into electrical energy in the third channel; A first heat exchanger (33), wherein the inlet end of the first heat exchanger (33) is connected to the third channel, a receiving chamber suitable for accommodating a medium to be heated is formed in the first heat exchanger (33), the medium to be heated in the receiving chamber is suitable for heat exchange with the steam in the third channel, and the outlet end of the first heat exchanger (33) is connected to the second channel (202).

3. The smelting slag waste heat utilization component according to claim 1, characterized in that: The second heat utilization component comprises: A separation device is formed with an inlet connected to the first outlet and an outlet connected to the mixing device, and the separation device is suitable for separating gas, solid and liquid in the slag mixture.

4. The smelting slag waste heat utilization component according to claim 3 is characterized in that: The separation device comprises: a solid-gas separation device (41), the solid-gas separation device (41) is formed with the inlet, the solid-gas separation device (41) is suitable for separating gas and solid in the slag mixture, and the solid-gas separation device (41) is respectively formed with a solid outlet end and a gas outlet end; A solid-liquid separation device (42), the solid-liquid separation device (42) is connected to the solid outlet end, the solid-liquid separation device (42) is suitable for separating the solid and the liquid in the slag mixture, and the solid-liquid separation device (42) is formed with the outlet connected to the mixing device.

5. The smelting slag waste heat utilization component according to claim 4, characterized in that: The second heat utilization component also includes: A compressor (32), the compressor (32) being in communication with the gas outlet end, the compressor (32) being adapted to convert thermal energy in the steam delivered from the gas outlet end into mechanical energy; A second heat exchanger (34), wherein the inlet end of the second heat exchanger (34) is connected to the compressor (32), and a receiving chamber suitable for receiving a medium to be heated is formed in the second heat exchanger (34), and the medium to be heated in the receiving chamber is suitable for heat exchange with the steam generated in the compressor (32), and the outlet end of the second heat exchanger (34) is connected to the solid-liquid separation device (42).

6. The smelting slag waste heat utilization component according to claim 5, characterized in that: A storage space is formed in the solid-liquid separation device (42), and the solid-liquid separation device (42) comprises: an overflow plate, the overflow plate is arranged in the storage space and divides the storage space into a solid storage space (402) and a liquid storage space (401), and a through hole suitable for liquid to pass through is formed on the overflow plate; A filter screen is disposed in the solid storage space (402) and is adapted to prevent solid slag in the slag mixture from falling into the liquid storage space (401).

7. The smelting slag waste heat utilization component according to claim 1, characterized in that: The mixing device is provided with a slag channel (12) and a high-pressure water channel (11), the high-pressure water channel (11) being connected to the first channel (201) and the slag channel (12) respectively, and the angle between the high-pressure water channel (11) and the slag channel (12) is α, and satisfies: 30°≤α≤45°.

8. The smelting slag waste heat utilization component according to claim 7, characterized in that: The heat exchange device (21) comprises: a guide plate, the guide plate being arranged on the inner wall of the first channel (201), the guide plate being arranged radially inclined in a direction from the high-pressure water channel (11) toward the first outlet.

9. The smelting slag waste heat utilization component according to claim 8, characterized in that: The guide plate is constructed of a plurality of guide plates which are sequentially arranged at intervals in a direction from the high-pressure water channel (11) toward the first outlet.

10. The smelting slag waste heat utilization component according to claim 7, characterized in that: The heat exchange device (21) further comprises: a buffer component, which is arranged at the connection point between the high-pressure water channel (11) and the first channel (201).

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