High-temperature steel slag waste heat recovery device

Abstract

The invention discloses a high-temperature steel slag waste heat recovery device, and relates to the technical field of energy conservation and resource comprehensive utilization in metallurgical engineering, the high-temperature steel slag waste heat recovery device comprises a single silo, a spiral stirrer, a feeding pipe, a discharging pipe, a circular metal pipe, a slag guide plate, a rotating device and a riding wheel, the feeding pipe is installed on the right side of the single silo, the discharging pipe is installed on the left side of the single silo, and the rotating device is installed on the right side of the single silo. And a fixed base is arranged at the bottom end of the single silo. Through the combined design of the spiral stirrer and the slag guide plate, the steel slag is continuously and dynamically rolled in the heat exchange process, the steel slag accumulation and retention problems are avoided, and therefore the heat exchange efficiency is improved; the problems that the steel slag is easy to cake and poor in fluidity at high temperature are solved. The device is obviously superior to a traditional tube shell type and fixed bed type heat exchange scheme, and is particularly suitable for energy extraction scenes of large-flow and high-calorific-value steel slag.

Description

Technical Field

[0001] The present invention relates to the technical field of energy conservation and comprehensive resource utilization in metallurgical engineering, and in particular to a high-temperature steel slag waste heat recovery device. Background Art

[0002] At present, the steel industry is one of the important high-energy-consuming industries in my country. Although the comprehensive energy consumption of my country's steel industry has declined in recent years, there is still huge room for energy conservation. The steel slag waste heat recovery heat exchanger can effectively improve the utilization rate of thermal energy and reduce energy consumption by efficiently recovering the waste heat in the steel slag, thereby further promoting the steel industry to develop towards the goal of "extreme energy efficiency". The large amount of steel slag produced by the steel industry contains rich thermal energy. By installing the steel slag waste heat recovery heat exchanger, this thermal energy can be effectively recovered and converted into useful energy for other production links, reducing energy waste. At present, the mainstream processes for steel slag treatment mainly include pit slag stewing process and pressurized hot stuffing process.

[0003] The pit slag stewing process wastes energy, has a long processing cycle, is inefficient, and may cause environmental pollution. It also has poor metal recovery effects, uneven operation, and affects quality. The pressurized hot stewing process consumes a lot of energy, is costly, and has safety hazards. It is slow to process, some harmful substances cannot be removed, and the equipment investment and maintenance costs are high.

[0004] Steel slag waste heat recovery devices are widely used in the steel industry. A variety of steel slag waste heat recovery devices and heat exchangers are already available on the market. However, most traditional devices still face technical bottlenecks when processing high-temperature, lumpy steel slag. Steel slag is typically at a high temperature when entering the heat exchanger, and due to its lumpy form, it is prone to sticking and agglomerating, resulting in incomplete heat exchange and uneven treatment. Many existing heat exchange devices are unable to effectively address the uneven flow and agglomeration of steel slag under high-temperature conditions, especially in the molten slag temperature range, where slag temperatures exceed 1000°C. Summary of the Invention

[0005] The object of the present invention is to provide a high-temperature steel slag waste heat recovery device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a high-temperature steel slag waste heat recovery device, comprising a single silo, a spiral agitator, a feed pipe, a discharge pipe, a circular metal pipe, a slag guide plate, a rotating device and a supporting wheel. The feed pipe is installed on the right side of the single silo, and the discharge pipe is installed on the left side of the single silo. A fixed base is provided at the bottom end of the single silo. The spiral agitator is installed inside the single silo. The spiral agitator includes a slag guide plate and a rotating shaft. The spiral agitator is composed of multiple slag guide plates with a 30-degree angle and a rotating shaft.

[0007] Preferably, the rotating device includes a pulley and a bracket, and the pulley is fixedly mounted on the single silo cylinder through the bracket to form an integrated rotating structure therewith.

[0008] Preferably, the supporting wheel is installed on a fixed base through a supporting wheel bracket, and the supporting wheel is connected to the outside of the single silo to bear the weight of the single silo and provide supporting force during the rotation process, so that it maintains stable operation during the rotation process.

[0009] Preferably, the feed pipe and the discharge pipe are both made of welded metal plates, the material of the single silo is a circular metal tube, and a feed port and a discharge port are respectively provided at both ends of the single silo. The height of the single silo is 2400mm, the length is 19000mm, and the feed port is 600mm long and about 800mm wide. The feed port is equipped with a temperature control device to ensure that the temperature of the steel slag is appropriate before entering the processing area, and the discharge port is equipped with an automatic adjustment device, which can automatically adjust the discharge speed according to the steel slag flow rate.

[0010] Preferably, the single silo is provided with a membrane water-cooled wall on the outside and a circular metal heat-conducting pipe passing through in a circumferential direction on the inside. The cylinder of the single silo is provided with corresponding holes cut and punched out. The holes are used to fix and install the metal circular pipes. The hole diameter is 25 to 80 mm, and the spacing between the holes is 25 to 120 mm. The arrangement of the holes matches the arrangement of the circular metal pipes, which is used for the circular metal pipes and ensures their stable installation.

[0011] Preferably, the rotating shaft is composed of a circular metal tube, which can make the steel slag turn evenly, ensure that the contact time between the steel slag and the water-cooled wall is consistent, and optimize the heat exchange process. The slag guide plate is fixed on the outer side of the circular metal tube wall sealed at both ends, and the slag guide plate is welded into one piece with the rotating shaft. The angle of the slag guide plate is 30 degrees, which can help the steel slag to be evenly distributed in the device, ensuring sufficient contact between the steel slag and the water-cooled wall, thereby improving the heat exchange efficiency. The slag guide plate is fixed on the rotating shaft to ensure that the steel slag is evenly distributed along the specified path to prevent its accumulation, thereby ensuring uniform heating and cooling of the material.

[0012] Preferably, both ends of the circular metal tube pass through the mounting holes symmetrically arranged on the cylinder of the single silo in sequence, and the mounting holes and the circular metal tube are sealed and fixed by full-circle welding to ensure that the heat-conducting medium circulates in a closed manner in the tube without leakage. The connecting parts of the circular metal tube and the cylinder of the single silo are fixedly connected and sealed as one by electric welding equipment. The length of the circular metal tube from the upper end of the circular metal tube extending out of the cylinder of the single silo is 300 to 500 mm, and the length of the circular metal tube from the lower end of the circular metal tube extending out of the cylinder of the single silo is 300 to 500 mm.

[0013] Preferably, an anti-wear lining is fixedly provided between the inner wall of the single silo and the contact area with the slag to resist the scouring and wear of the inner wall of the cylinder caused by the slag during the rotation and advancement process. The anti-wear lining is made of highly wear-resistant alloy steel or ceramic composite material and has excellent high temperature resistance, wear resistance and corrosion resistance. It can effectively resist the friction and impact of the slag under high temperature conditions, ensuring stable operation under high temperature working conditions. The anti-wear lining is fixed to the inner wall of the cylinder by high-strength bolts or welding. The bolt fixing method is suitable for designs that require regular replacement of the liner, while the welding fixing method ensures a firm connection between the liner and the inner wall of the cylinder to avoid loosening or falling off under high temperature or intense working conditions.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention uses a combined design of a spiral agitator and a slag guide plate to enable the slag to dynamically tumble throughout the entire heat exchange process, avoiding the problems of slag accumulation and retention, thereby improving the heat exchange efficiency. Secondly, through the zoned temperature control design, the patented invention uses a multi-segment heat exchange design to optimize the cooling of different temperature sections of the slag, thereby improving the heat exchange efficiency. Specifically, in the high-temperature zone, the slag is in close contact with the cooling wall, the cooling water flow is large, and heat can be released quickly. In the low-temperature zone, the residual heat is fully recovered by adjusting the cooling water flow and the slag flow rate.

[0016] 2. In addition, the design of the present invention fully considers the high temperature, lumpy shape and easy agglomeration characteristics of steel slag. Through the application of high-temperature resistant materials and the special structural design targeting the movement characteristics of steel slag, the equipment can operate more stably and efficiently. In particular, for the movement characteristics of the slag temperature zone and the easy tumbling and discharge of steel slag, the present invention designs a special spiral agitator and slag guide plate structure, so that the steel slag can be evenly rolled and discharged smoothly during the high-temperature treatment process, avoiding the problems of steel slag agglomeration and retention. The multi-section heat exchange and turbulence enhanced structural design also significantly improve the heat recovery efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of the steel slag heat exchange device of the present invention;

[0018] Figure 2 This is a schematic structural diagram of a cross section of a steel slag heat exchange device according to the present invention;

[0019] Figure 3 This is a schematic diagram of the operating structure of the steel slag heat exchange device of the present invention;

[0020] Figure 4 This is a schematic diagram of the installation of the slag guide plate in the steel slag heat exchange device of the present invention.

[0021] In the figure: 1. Single silo; 2. Spiral agitator; 3. Feed pipe; 4. Discharge pipe; 5. Round metal pipe; 6. Slag guide plate; 7. Rotating mechanism; 8. Support wheel. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-4 The present invention provides a technical solution: a high-temperature steel slag waste heat recovery device, comprising a single silo 1, a spiral agitator 2, a feed pipe 3, a discharge pipe 4, a circular metal pipe 5, a slag guide plate 6, a rotating device 7 and a supporting wheel 8, characterized in that: the feed pipe 3 is installed on the right side of the single silo 1, the discharge pipe 4 is installed on the left side of the single silo 1, a fixed base is provided at the bottom end of the single silo 1, the spiral agitator 2 is installed inside the single silo 1, the spiral agitator 2 includes a slag guide plate 6 and a rotating shaft, and the spiral agitator 2 is composed of multiple slag guide plates 6 with a 30-degree angle and a rotating shaft;

[0024] The specially designed combination of a spiral agitator 2 and a slag guide plate 6 ensures uniform tumbling and smooth discharge of the slag, significantly improving the fluidity of the high-temperature, massive slag and avoiding the slagging and dead zone issues common in existing fixed-bed, shell-and-tube, or conveyor-belt heat exchangers. Furthermore, by combining multi-zone temperature control with phase-change heat transfer, the present invention achieves efficient heat recovery and optimizes cooling at different slag temperature zones, significantly improving heat exchange efficiency and energy recovery.

[0025] The rotating device 7 includes a pulley and a bracket, and the pulley is fixedly installed on the cylinder of the single silo 1 through the bracket to form an integrated rotating structure with it. After the metal plate is bent into the required shape by processing equipment, it is processed into a metal tube with a weld on the surface by spiral welding. After the welded metal tube is cut according to the designed length, multiple metal tubes are arranged in parallel along the circumferential direction and connected with the upper and lower collecting pipes by welding to assemble into an overall cylindrical single silo structure. A feed port and a discharge port are respectively provided at both ends of the structure for the continuous entry and exit of steel slag. During the assembly process, it is ensured that the metal tubes are firmly welded and compactly arranged, thereby forming a shell body with both structural strength and heat exchange function.

[0026] The supporting wheel 8 is installed on a fixed base through a supporting wheel bracket, and the supporting wheel 8 is connected to the outside of the single silo 1 to bear the weight of the single silo 1 and provide support force during the rotation process, so that it maintains stable operation during the rotation process.

[0027] The feeding pipe 3 and the discharging pipe 4 are both made of metal plate welding, the material of the single cylinder silo 1 is a circular metal pipe, the single cylinder silo 1 is provided with a feeding port and a discharging port at two ends respectively, the height of the single cylinder silo 1 is 2400mm, the length is 19000mm, the length of the feeding port is 600mm, the width is about 800mm, and the feeding port is provided with a temperature control device to ensure that the temperature of the steel slag is appropriate before entering the processing area, and the discharging port is provided with an automatic adjusting device to automatically adjust the discharging speed according to the flow of the steel slag.

[0028] The single cylinder silo 1 is provided with a membrane type water cooling wall outside and a circular metal heat conducting pipe penetrating in the circumferential direction inside, the cylinder body of the single cylinder silo 1 is provided with corresponding holes punched by cutting and stamping, the holes are used to fixedly install the metal circular pipe, the hole diameter of the holes is 25-80mm, the spacing between the holes is 25-120mm, and the arrangement of the holes matches the arrangement of the circular metal pipe, which is used for the circular metal pipe and ensures stable installation.

[0029] The rotating shaft is composed of a circular metal pipe, which can make the steel slag turn evenly and ensure that the contact time of the steel slag with the water cooling wall is consistent, thereby optimizing the heat exchange process, the guide plate 6 is fixed outside the wall of the circular metal pipe with both ends sealed, the guide plate 6 is welded with the rotating shaft as a whole, the angle of the guide plate 6 is 30 degrees, which can help the steel slag to be evenly distributed in the device, ensure the full contact of the steel slag with the water cooling wall, thereby improving the heat exchange efficiency, the guide plate 6 is fixed on the rotating shaft to ensure that the steel slag is evenly distributed along the specified path and prevent it from accumulating, thereby ensuring uniform heating and cooling of the material, the guide plate 6 is made of metal welding process to ensure high temperature resistance, corrosion resistance, and can withstand the friction of high temperature steel slag, effectively reducing wear and tear, the guide plate 6 is connected with the rotating shaft by welding or mechanical fixing, the guide plate 6 is made of high strength and wear resistant material such as high alloy steel to cope with the friction of steel slag and high temperature environment, the thickness of the guide plate 6 is 5-12mm, the spacing between each guide plate 6 is 50-150mm, and the guide plate 6 is evenly distributed along the circumferential direction of the single cylinder silo 1, the arrangement direction of the guide plate 6 is usually consistent with the rotating direction of the single cylinder silo 1, forming a spiral structure, which makes the steel slag flow smoothly in the single cylinder silo 1 and can be uniformly turned in the single cylinder silo 1 by the rotating action of the spiral agitator 2, the rotating shaft is usually designed as hollow to reduce the overall weight and enhance its carrying capacity, the two ends are fixedly connected with the cylinder body of the single cylinder silo 1 through a supporting device, the middle part of the rotating shaft is fixed with multiple guide plates 6, the guide plates 6 are fixed on the shaft according to the properties of the steel slag and the heat exchange demand, and the diameter of the rotating shaft is 50-100mm.

[0030] The two ends of the circular metal tube pass through the mounting holes symmetrically arranged on the cylinder of the single silo 1 in sequence, and the mounting holes and the circular metal tube are sealed and fixed by full-circle welding to ensure that the heat-conducting medium circulates in a closed manner in the tube without leakage. The connecting parts of the circular metal tube and the cylinder of the single silo 1 are fixedly connected and sealed together with electric welding equipment. The length of the circular metal tube from which the upper end extends out of the cylinder of the single silo 1 is 300 to 500 mm, and the length of the circular metal tube from which the lower end extends out of the cylinder of the single silo 1 is 1 / 2 to 2 / 3 of the length of the circular metal tube. The length is 300-500mm. A driven pulley is provided on the outer circumference of the cylinder of the single silo 1. The driven pulley is connected to the active pulley in the external drive device through a transmission belt. The active pulley is driven by a motor or a reduction motor. The transmission belt can be a synchronous belt, a V-belt or other flexible transmission member suitable for low-speed and high-torque transmission. The driven pulley and the single silo 1 are driven to rotate around the axis as a whole through friction. The center spacing of the pulleys at the bottom of the single silo 1 is 1600mm, and the width spacing of the bottom bracket of the single silo 1 is 2070mm.

[0031] An anti-wear lining is fixedly provided between the inner wall of the single silo 1 and the contact area with the slag, which is used to resist the scouring and wear of the inner wall of the cylinder caused by the slag during the rotation and advancement process. The anti-wear lining is made of highly wear-resistant alloy steel or ceramic composite material, and has excellent high temperature resistance, wear resistance and corrosion resistance. It can effectively resist the friction and impact of the slag under high temperature conditions, ensuring stable operation under high temperature working conditions. The anti-wear lining is fixed to the inner wall of the cylinder by high-strength bolts or welding. The bolt fixing method is suitable for designs that require regular replacement of the lining, while the welding fixing method ensures a firm connection between the lining and the inner wall of the cylinder to avoid loosening or falling off under high temperature or intense working conditions;

[0032] When there is a temperature difference between the materials inside and outside the single silo 1 (i.e., the temperature inside the silo is higher than outside), the heat exchange process begins. After the evaporation section of the circular metal tube in the single silo 1 is heated, the liquid heat-conducting medium on the tube wall evaporates rapidly. As the heat exchanger rotates, the liquid heat-conducting medium flows along the metal tube to the evaporation section to complete the heat transfer. During this process, the heat is transferred from the evaporation section to the condensation section at both ends of the external metal tube. The evaporated heat-conducting medium releases heat in the condensation section and condenses into liquid. It returns through the circulation system for reheating. Through this cycle, the high-temperature materials in the silo continuously transfer heat to the outside, achieving efficient heat exchange.

[0033] The heat exchanger is divided into three zones according to the temperature stage and heat exchange requirements during the entire process, which effectively improves the heat recovery efficiency and maximizes the heat transfer according to the temperature difference.

[0034] High temperature section (entrance area): This area is designed for forced convection heat exchange, and the liquid heat transfer medium adopts a large flow rate to quickly absorb a large amount of heat from the slag.

[0035] Medium temperature section (middle zone): This area is designed for convection heat exchange with a medium flow rate and a moderate cooling water flow rate to ensure a balanced heat exchange efficiency between the slag and the water-cooled wall.

[0036] Low temperature section (outlet area): The design of this area is mainly to use the remaining heat energy to further heat the cooling water and generate steam through this process.

[0037] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0038] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A high-temperature steel slag waste heat recovery device, comprising a single silo (1), a spiral stirrer (2), a feed pipe (3), a discharge pipe (4), a circular metal pipe (5), a slag guide plate (6), a rotating device (7) and a supporting wheel (8), characterized in that: A feed pipe (3) is installed on the right side of the single silo (1), a discharge pipe (4) is installed on the left side of the single silo (1), a fixed base is provided at the bottom end of the single silo (1), and the spiral stirrer (2) is installed inside the single silo (1), the spiral stirrer (2) comprises a slag guide plate (6) and a rotating shaft, and the spiral stirrer (2) is composed of a plurality of slag guide plates (6) with a 30-degree angle and the rotating shaft.

2. The high-temperature steel slag waste heat recovery device according to claim 1, characterized in that: The rotating device (7) comprises a pulley and a bracket, and the pulley is fixedly mounted on the cylinder of the single silo (1) via the bracket, forming an integrated rotating structure therewith.

3. The high-temperature steel slag waste heat recovery device according to claim 2, characterized in that: The supporting wheel (8) is installed on a fixed base via a supporting wheel bracket, and the supporting wheel (8) is connected to the outside of the single silo (1) to bear the deadweight of the single silo (1) and provide a supporting force during the rotation process, so that the single silo (1) maintains stable operation during the rotation process.

4. The high-temperature steel slag waste heat recovery device according to claim 3, characterized in that: The feed pipe (3) and the discharge pipe (4) are both metal welded structures. The feed end is provided with a temperature control device, and the discharge end is provided with a flow regulating mechanism for regulating the slag feed and discharge temperature and discharge rate.

5. The high-temperature steel slag waste heat recovery device according to claim 4, characterized in that: The single silo (1) is provided with a membrane water-cooled wall on the outside and a circular metal heat-conducting pipe passing through in a circumferential direction on the inside. The cylinder of the single silo (1) is provided with corresponding holes cut and punched out. The holes are used to fix and install the metal circular pipes. The hole diameter is 25 to 80 mm, and the spacing between the holes is 25 to 120 mm. The arrangement of the holes matches the arrangement of the circular metal pipes, and is used to install the circular metal pipes and ensure their stable installation.

6. The high-temperature steel slag waste heat recovery device according to claim 5, characterized in that: The rotating shaft is composed of a circular metal tube, which can make the steel slag evenly turn over, ensure that the contact time between the steel slag and the water-cooled wall is consistent, and optimize the heat exchange process. The slag guide plate (6) is fixed on the outer side of the circular metal tube wall sealed at both ends. The slag guide plate (6) is welded to the rotating shaft as a whole. The angle of the slag guide plate (6) is 30 degrees, which can help the steel slag to be evenly distributed in the device, ensure that the steel slag is fully in contact with the water-cooled wall, thereby improving the heat exchange efficiency. The slag guide plate (6) is fixed on the rotating shaft to ensure that the steel slag is evenly distributed along the specified path, preventing it from piling up, thereby ensuring uniform heating and cooling of the material.

7. The high-temperature steel slag waste heat recovery device according to claim 6, characterized in that: The two ends of the circular metal tube are respectively passed through the symmetrical mounting holes on the single silo cylinder and sealed with the cylinder by full-circle welding, so as to realize the closed circulation of the heat-conducting medium in the tube and prevent leakage.

8. The high-temperature steel slag waste heat recovery device according to claim 7, characterized in that: An anti-wear lining is fixedly arranged between the inner wall of the single silo (1) and the contact area with the steel slag, which is used to resist the scouring and wear of the inner wall of the cylinder caused by the steel slag during the rotation and advancement process. The anti-wear lining is made of high-wear-resistant alloy steel or ceramic composite material, and has excellent high-temperature resistance, wear resistance and corrosion resistance. It can effectively resist the friction and impact of the steel slag under high temperature conditions, ensuring stable operation under high-temperature working conditions. The anti-wear lining is fixed to the inner wall of the cylinder by high-strength bolts or welding. The bolt fixing method is suitable for designs that require regular replacement of the lining, while the welding fixing method ensures a firm connection between the lining and the inner wall of the cylinder, avoiding loosening or falling off under high temperature or intense working conditions.

9. The high-temperature steel slag waste heat recovery device according to claim 8, characterized in that: The device adopts a multi-zone heat exchange design. Based on the temperature gradient of the slag during the cooling process, the interior of the single silo is divided into three functional areas: high temperature, medium temperature, and low temperature. Although the three sections are integrated in appearance, they have significant differences in internal structure, reflecting the structural advantages of segmented heat exchange: a. The high-temperature section is located near the feed inlet, with high-density heat-conducting metal tubes and closely spaced slag guide plates arranged inside. This section also provides the highest cooling medium flow rate, and the slag guide plates are set at a smaller angle, facilitating frequent slag tumbling and rapid release of high-level heat energy. b. The medium-temperature section is centrally located, with moderately spaced heat-conducting metal tubes, evenly arranged slag guide plates, and balanced cooling medium flow, forming a stable, medium-intensity heat exchange area. This ensures a smooth transition of the slag temperature gradient and improves overall heat transfer efficiency. c. The low-temperature section is close to the discharge end, the spacing between the heat-conducting metal tubes is appropriately increased, the density of the slag guide plate is reduced, and the retention time of the slag is prolonged to release its residual heat as much as possible; at the same time, a steam collection channel is designed in this section to concentrate the output of the heat-conducting fluid steam and improve the heat utilization rate at the end.

10. The high-temperature steel slag waste heat recovery device according to claim 9, characterized in that: The device is suitable for treating high-temperature steel slag with an initial temperature of about 800°C. After the steel slag is treated by this device, the discharge temperature can be reduced to 230°C to 270°C. The efficient recovery of the waste heat of the steel slag is achieved through the coordinated action of the membrane water-cooled wall arranged on the outside of the single silo and the internal heat-conducting metal pipe. Under typical operating conditions (steel slag processing capacity of 30 to 50 tons / hour), the device can convert the sensible heat released by the steel slag into medium-pressure steam with a temperature of about 200°C and a saturation pressure of 0.7MPa. According to heat balance estimation, about 220 to 230kg of steam can be recovered per ton of steel slag, corresponding to a steam production of 6.6 to 11.5 tons / hour (depending on the operating flow and cooling water regulation). This design effectively improves the heat recovery rate, meets the needs of medium and low-pressure industrial steam, and realizes the comprehensive utilization of resources; The device integrates a multi-section collaborative heat exchange structure and a dynamic tumbling anti-caking system, and realizes efficient recovery of steel slag waste heat through a single silo structure, an internal spiral agitator and a slag guide plate combination.

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