Heat removal device for high-temperature metallurgical slag
By using a heat extraction device to contact the high-temperature metallurgical slag during the metallurgical slag treatment process and recovering the heat from the metallurgical slag using a heat exchange medium, the problem of unrecovered heat from the metallurgical slag is solved, and rapid cooling and efficient utilization of waste heat are achieved.
Patent Information
- Application Number
- CN202422813034.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-18
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-11-18
AI Technical Summary
Existing technologies fail to effectively recover heat from metallurgical slag, resulting in waste of resources and increased energy consumption of equipment.
The device uses a heat exchanger to contact the high-temperature metallurgical slag, and the heat is carried out through the heat exchange medium. Heat exchange is carried out at the cold end to recover the heat of the high-temperature metallurgical slag. The device includes a material contact layer and a liquid medium layer. It uses a chain and sprocket drive device, along with a leveling, turning and scraping device, to achieve efficient heat exchange.
It achieves rapid cooling of metallurgical slag and high-grade waste heat recovery, reducing equipment load and energy consumption, and improving resource utilization efficiency.
Smart Images
Figure CN223470512U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to high temperature metallurgical slag processing technical field especially relates to a heat taking device for high temperature metallurgical slag. BACKGROUND
[0002] The smelting of the metallurgical industry produces a large amount of high-temperature metallurgical slag while producing metal, especially the steel industry, according to statistics, 80-150 kg of steel slag is produced per ton of steel, the initial temperature of the steel slag is about 1300 DEG C, which contains a large amount of heat energy, and the current steel slag treatment such as roll pressing method, drum method, pool type hot sweating method and the like cannot recover and utilize the heat therein.
[0003] At present, the market share of the steel slag roll pressing treatment technology is higher in the field of steel slag treatment, this process can quickly cool and crush the steel slag, and the steel slag at 1300 DEG C can be cooled to 600 DEG C in about 30 min, which greatly improves the efficiency of the steel slag treatment, the process can realize the rapid cooling of the steel slag, but the heat during the cooling of the steel slag is not recovered and utilized, for example, if a waste heat recovery device is added on the basis of this process, great energy-saving benefits can be formed.
[0004] Therefore, it is necessary to provide a heat taking device for high-temperature metallurgical slag, which is applied to the heat taking and recovery of solid high-temperature metallurgical slag or other high-temperature materials, can be attached to the next process of the widely used steel slag roll pressing, changes the current steel slag cooling mode, can quickly cool the steel slag and recover the high-grade waste heat contained in the steel slag. UTILITY MODEL CONTENTS
[0005] Therefore, the purpose of the utility model is to provide a heat taking device for high-temperature metallurgical slag, which is contacted with high-temperature materials through the heat taking device, takes out the heat in the high-temperature materials through the heat exchange medium, exchanges heat at the cold end of the heat exchange medium, and then circulates to exchange heat, which can quickly cool the steel slag and recover the high-grade waste heat contained in the steel slag.
[0006] To solve the above technical problems, the utility model adopts the following technical scheme:
[0007] A heat taking device for high-temperature metallurgical slag, comprising a heat taking plate, the heat taking plate comprises a material contact layer and a liquid medium layer arranged below the material contact layer, the edge of the material contact layer is provided with a heat taking plate stop edge, a medium inlet and outlet are arranged on the liquid medium layer, the medium inlet and outlet are connected in communication with a heat exchange medium pipeline, the heat exchange medium pipeline is a circulating pipeline, and a heat exchange device is arranged on the heat exchange medium pipeline.
[0008] The material contact layer is made of wear-resistant and high-temperature-resistant metal plate, and the liquid medium layer is below the material contact layer, the heat exchange medium flowing from the heat exchange medium pipeline flows in the flow channel of the liquid medium layer, and the heat is taken away by the flow of the heat exchange medium, and the liquid medium layer is not limited to the use of pipeline welding below the wear-resistant and high-temperature-resistant metal plate or the groove below the wear-resistant metal plate to form the flow channel.
[0009] Preferably, the heat taking device further comprises a chain, a sprocket and a driving device, the sprocket is arranged at both ends of the heat taking plate respectively, the rotation axis of the sprocket is perpendicular to the length direction of the heat taking plate, the driving device is arranged on the central rotation axis of the sprocket, and the chain is arranged on both sides of the heat taking plate and is driven to rotate synchronously by the sprocket.
[0010] Preferably, a plurality of connecting beams are fixedly connected to the synchronous positions of the chains on both sides of the heat taking plate, and the connecting beams are respectively provided with a flattening device, a material turning device and a material scraping device. The driving device drives the sprocket to rotate, and the sprocket drives the chain and the flattening device, the material turning device and the material scraping device fixed on the chain to move circularly.
[0011] Preferably, the heat taking device further comprises a feeding port and a discharging port, the feeding port is arranged above one end of the heat taking plate, the position of the feeding port is at the starting position of the forward direction of the chain above the heat taking plate, and the discharging port is arranged below the other end of the heat taking plate. The heat taking device is arranged directly below the feeding port, and the roller-pressed steel slag is further cooled and the heat in the steel slag is absorbed to generate steam. After the device is used, the rolling time can be appropriately shortened, the water spraying in the steel slag rolling area can be reduced or cancelled, the load of the rolling equipment and the auxiliary public facilities is reduced, and the equipment energy consumption is reduced. The steel slag after heat taking continues to enter the heat steaming device for heat steaming, and the device does not affect the processing flow of the original process.
[0012] Preferably, when the chain above the heat taking plate advances from the feeding port, the flattening device, the material turning device and the material scraping device pass above the heat taking plate in sequence. A certain space is left between the flattening device and the heat taking plate, the incoming material of the feeding port is flattened through the sharp shape of the flattening device, the material is laid flat on the heat taking plate, the material is loosened and turned by the material turning device, the upper material is directly turned to contact the heat taking plate, and the heat taking effect is increased; the material scraping device is basically in contact with the upper surface of the heat taking plate, the material after cooling is gathered through the shape of the closing opening and is scraped into the discharging port.
[0013] Preferably, the flattening device, the material turning device and the material scraping device are plow-shaped, trapezoidal, triangular, rectangular or tooth-shaped structures. The flattening device is used to uniformly flatten the material, the material turning device is used to loosen and turn the material and prevent the material from being stuck, and the material scraping device is used to send the material into the discharging port. The number and specific parameters of the flattening device, the material turning device and the material scraping device can be selected according to the actual situation.
[0014] Preferably, the heat exchange medium pipeline and the liquid medium layer are filled with heat exchange medium, the heat exchange medium is a high-temperature-resistant fluid, the heat exchange medium is a low-melting-point eutectic metal, and the low-melting-point eutectic metal is bismuth and a bismuth-based alloy, gallium and a gallium-based alloy, or lead and a lead-based alloy. The heat exchange medium should maintain a single-phase state throughout the heat recovery process, and a metal alloy with extremely high thermal conductivity, such as bismuth and a bismuth-based alloy, gallium and a gallium-based alloy, lead and a lead-based alloy, etc., is preferably selected. The heat exchange medium can obtain high-grade heat, thereby improving the recovery value of waste heat.
[0015] The working process of the heat taking device for high-temperature metallurgical slag is as follows:
[0016] The high-temperature material falling from the roller press downwardly from the feeding port falls into the material contact layer of the heat taking plate, and the driving device drives the chain and the flattening device, the material turning device and the material scraping device fixed on the chain to move circularly. The material is first flattened by the flattening device, and then repeatedly turned and loosened by the material turning device, so that the material is directly contacted with the material contact layer for heat exchange, the heat exchange medium in the liquid medium layer below takes away the heat of the material, and the material is recycled to the heat taking device for heat taking after being cooled by the heat exchange device. The material on the heat taking device is scraped into the discharging port by the material scraping device when the temperature of the material is reduced to a predetermined temperature, and a heat taking working cycle is completed.
[0017] The heat taking device for high-temperature metallurgical slag has the following advantages:
[0018] The heat taking device for high-temperature metallurgical slag has the following advantages:
[0019] The above description is merely a summary of the technical scheme of the present application, in order to enable a person skilled in the art to more clearly understand the technical means of the present application and can be implemented according to the content of the specification, at the same time, in order to make the above and other purposes, technical features and advantages of the present application more easily understood, one or more preferred embodiments are listed below, and are described in detail as follows with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS
[0020] One or more embodiments are exemplarily illustrated by the pictures in the drawings corresponding thereto, which do not constitute a limitation on the embodiments, and the elements with the same reference numerals in the drawings represent similar elements, unless otherwise specifically stated, and the drawings do not constitute a proportional limitation.
[0021] Fig. 1 A front view of the heat extraction device of the heat extraction device for high-temperature metallurgical slag of the present application is shown.
[0022] Fig. 2 A top view of the heat extraction device of the heat extraction device for high-temperature metallurgical slag of the present application is shown.
[0023] Fig. 3 A bottom view of the heat extraction device of the heat extraction device for high-temperature metallurgical slag of the present application is shown.
[0024] MAIN REFERENCE NUMERALS EXPLANATION:
[0025] 1 - chain, 2 - sprocket, 3 - flattening device, 4 - material turning device, 5 - material scraping device, 6 - heat extraction plate, 61 - heat extraction plate baffle, 62 - material contact layer, 63 - liquid medium layer, 64 - medium inlet and outlet, 7 - feeding port, 8 - discharging port, 9 - driving device. DETAILED DESCRIPTION
[0026] The specific embodiments of the present application will be described in detail below with reference to the drawings, but it should be understood that the protection scope of the present application is not limited by the specific embodiments.
[0027] Unless otherwise explicitly stated, throughout the specification and claims, the term "comprise" or its variants such as "contain" or "include" and the like will be understood to include the stated element or component, but not to exclude other elements or components.
[0028] In this document, for ease of description, spatially relative terms such as "below," "beneath," "down," "above," "above," etc. may be used to describe the relationship of one element or feature to another element or feature in the accompanying drawings. It should be understood that the spatially relative terms are intended to encompass different orientations of an object in use or operation in addition to the orientation depicted in the drawings. For example, if the object in the figure is turned over, the element described as being "below" or "below" other elements or features will be oriented "above" the element or feature. Therefore, the exemplary term "below" can include both below and above directions. Objects may also have other orientations (rotated 90 degrees or other orientations) and the spatially relative terms used herein should be interpreted accordingly.
[0029] like Figs. 1-3 As shown, a heat extraction device for high-temperature metallurgical slag includes a heat extraction plate 6, which includes a material contact layer 62 and a liquid medium layer 63 arranged below the material contact layer 62. The edge of the material contact layer 62 is provided with a heat extraction plate rib 61, and the liquid medium layer 63 is provided with a medium inlet and outlet 64, and the medium inlet and outlet 64 is connected to the heat exchange medium pipeline.
[0030] The heat exchange medium pipeline and liquid medium layer 63 are filled with a heat exchange medium. The heat exchange medium is a high-temperature resistant fluid, and the heat exchange medium is a low-melting-point eutectic metal, such as bismuth and bismuth-based alloys, gallium and gallium-based alloys, or lead and lead-based alloys. The heat exchange medium should remain single-phase throughout the heat recovery process. Metal alloys with extremely high thermal conductivity, such as bismuth and bismuth-based alloys, gallium and gallium-based alloys, and lead and lead-based alloys, are preferred. The choice of heat exchange medium can be based on site conditions and needs. This heat exchange medium can generate high-quality heat, increasing the recovery value of waste heat.
[0031] The material contact layer 62 is made of a wear-resistant and high-temperature resistant metal plate, and the liquid medium layer 63 is below the material contact layer 62. The heat exchange medium flowing in from the heat exchange medium pipeline flows in the flow channel of the liquid medium layer 63, and the heat is taken away by the flow of the heat exchange medium. The liquid medium layer 63 is not limited to using pipes welded under the wear-resistant and high-temperature resistant metal plate or cutting grooves under the wear-resistant metal plate to form a flow channel.
[0032] The heat taking device further comprises a chain 1, a sprocket 2 and a driving device 9, the sprocket 2 is arranged at two ends of the heat taking plate 6 respectively, the rotating shaft of the sprocket 2 is perpendicular to the length direction of the heat taking plate 6, the driving device 9 is arranged on the central rotating shaft of the sprocket 2, and the chain 1 is arranged on the two sides of the heat taking plate 6 and is driven to rotate synchronously by the sprocket 2.
[0033] The heat taking device further comprises a feeding port 7 and a discharging port 8, the feeding port 7 is arranged above one end of the heat taking plate 6, the position of the feeding port 7 is at the starting position of the advancing direction of the chain 1 above the heat taking plate 6, and the discharging port 8 is arranged below the other end of the heat taking plate 6.
[0034] When the chain 1 above the heat taking plate 6 advances from the feeding port 7, the flattening device 3, the material turning device 4 and the material scraping device 5 pass above the heat taking plate 6 in sequence.
[0035] The flattening device 3, the material turning device 4 and the material scraping device 5 are in the shape of a plough, a trapezoid, a triangle, a rectangle or a tooth, the flattening device 3 is used for uniformly flattening the material, the material turning device 4 is used for loosening and turning the material and preventing the material from being stuck, and the material scraping device 5 is used for conveying the material into the discharging port, and the number and specific parameters of the flattening device 3, the material turning device 4 and the material scraping device 5 can be selected according to actual conditions.
[0036] The working process of the heat taking device for high-temperature metallurgical slag is as follows:
[0037] The high-temperature material from the roller press falls into the material contact layer 62 of the heat-removing plate 6 from the feeding port 7, and the driving device 9 drives the chain 1 and the flattening device 3, the material turning device 4 and the material scraping device 5 fixed on the chain 1 to move in a cycle. The material is first flattened by the flattening device 3, and then repeatedly turned and loosened by the material turning device 4, and the material is in direct contact with the material contact layer 62 for heat exchange, and the heat exchange medium in the liquid medium layer 63 below takes away the heat of the material, and the material is recycled to the heat-removing device after being cooled by the heat exchange device to remove heat. When the temperature of the material on the heat-removing device is reduced to the predetermined temperature, the material is scraped into the discharging port by the material scraping device 5, and a heat-removing working cycle is completed.
[0038] The foregoing description of specific exemplary embodiments of the present application is intended to be illustrative only and is not intended to limit the present application to the precise forms described. Many modifications and variations are possible in light of the above teachings without departing from the spirit or essential characteristics of the present application. The exemplary embodiments are chosen and described in order to explain the principles of the present application and its practical application and to allow others skilled in the art to understand the present application for various exemplary embodiments with various modifications as are suited to the particular use contemplated. Any and all modifications, variations or equivalents, whether purposefully or unintentionally, that fall within the scope of the present application are to be included herein.
Claims
1. A heat extraction device for high temperature metallurgical slag, characterized in that, The heat taking device comprises a heat taking plate (6), the heat taking plate (6) comprises a material contact layer (62) and a liquid medium layer (63) arranged below the material contact layer (62), an edge of the material contact layer (62) is provided with a heat taking plate baffle (61), the liquid medium layer (63) is provided with a medium inlet and outlet (64), the medium inlet and outlet (64) are connected in communication with a heat exchange medium pipeline, the heat exchange medium pipeline is a circulating pipeline and the heat exchange medium pipeline is provided with a heat exchange device.
2. A heat extraction device for high temperature metallurgical slag according to claim 1, characterised in that, The heat taking device further comprises a chain (1), a sprocket (2) and a driving device (9), the sprocket (2) is arranged at two ends of the heat taking plate (6) respectively, a rotation axis of the sprocket (2) is perpendicular to a length direction of the heat taking plate (6), the driving device (9) is arranged on a central rotation axis of the sprocket (2), the chain (1) is arranged at two sides of the heat taking plate (6) respectively and the chain (1) is driven to rotate synchronously by the sprocket (2).
3. A heat extraction device for high temperature metallurgical slag according to claim 2, characterised in that, A plurality of connecting beams are fixedly connected at synchronous positions of the chains (1) at two sides of the heat taking plate (6), the connecting beams are respectively provided with a flattening device (3), a material turning device (4) and a material scraping device (5) fixedly arranged thereon.
4. A heat extraction device for high temperature metallurgical slag according to claim 3, characterised in that, The heat taking device further comprises a feeding port (7) and a discharging port (8), the feeding port (7) is arranged above one end of the heat taking plate (6), a position of the feeding port (7) is at a starting position of a forward direction of the chain (1) above the heat taking plate (6), the discharging port (8) is arranged below the other end of the heat taking plate (6).
5. A heat extraction device for high temperature metallurgical slag according to claim 4, characterised in that, When the chain (1) above the heat taking plate (6) advances from the feeding port (7), the flattening device (3), the material turning device (4) and the material scraping device (5) pass above the heat taking plate (6) in sequence.
6. A heat extraction device for high temperature metallurgical slag according to claim 5, characterised in that, The flattening device (3), the material turning device (4) and the material scraping device (5) are in the structures of a plow, a trapezoid, a triangle, a rectangle or a tooth.
7. A heat extraction device for high temperature metallurgical slag as claimed in claim 1, wherein, The heat exchange medium pipeline and the liquid medium layer (63) are filled with a heat exchange medium, the heat exchange medium is a high-temperature-resistant fluid, the heat exchange medium is a low-melting-point eutectic metal, the low-melting-point eutectic metal is bismuth and a bismuth-based alloy, gallium and a gallium-based alloy or lead and a lead-based alloy.