Casting molten slag scrap recovery device

Abstract

This application discloses a foundry slag scrap recycling device, comprising a cooling tank containing cooling water, a feeding mechanism, a spraying mechanism, a batch-by-batch cooling mechanism, a slag discharge mechanism, a waste heat recovery mechanism, a conveying assembly, and a crushing device. The feeding mechanism is located on the cooling tank, while the batch-by-batch cooling mechanism and the slag discharge mechanism are respectively located inside the cooling tank. The waste heat recovery mechanism is located on the cooling tank, and the spraying mechanism is located inside the cooling tank. The conveying assembly includes a water filtration and conveying mechanism, a cooling water recovery tank, and a drying mechanism. The water filtration and conveying mechanism is located between the cooling tank and the crushing device, the cooling water recovery tank is located below the water filtration and conveying mechanism, and the drying mechanism is located on the water filtration and conveying mechanism. Therefore, the heat of the high-temperature foundry slag can be effectively recovered, and the cooled and surface-dried foundry slag can be continuously conveyed to the crushing device in batches, thereby improving the recycling efficiency of scrap steel from the foundry slag and reducing energy waste.

Description

Technical Field

[0001] This application relates to the technical field of molten slag scrap steel recycling, and more particularly to a device for recycling foundry molten slag scrap steel. Background Technology

[0002] The steel production process generates a large amount of high-temperature foundry slag, which is a byproduct of pyrometallurgical production. The temperature is generally between 1200℃ and 1600℃. The slag contains a certain proportion of scrap steel. The slag after recycling the scrap steel can be used as a raw material for cement production or for road paving. It can be seen that the value and benefits brought by recycling foundry slag for scrap steel are very considerable.

[0003] In related technologies, during the scrap steel recycling process of high-temperature foundry molten slag, it is necessary to first cool the molten slag and then crush it to facilitate subsequent scrap steel recycling. Common cooling methods for high-temperature foundry molten slag include natural cooling and cooling water cooling. Natural cooling involves directly discharging the molten slag into an open area and using natural cooling to solidify it. However, this method has low cooling efficiency and the collection of the cooled molten slag is cumbersome. Cooling water cooling involves discharging the molten slag into a cooling pool filled with cooling water to accelerate its solidification. However, the molten slag cooled by cooling water still needs to be dried before entering the crushing process, which is also inefficient and does not effectively recover the heat from the molten slag, resulting in a waste of heat resources. Summary of the Invention

[0004] This application aims to at least partially address one of the technical problems in the related art.

[0005] Therefore, one objective of this application is to provide a foundry slag scrap steel recycling device that can effectively recover the heat of high-temperature foundry slag and continuously transport the cooled and surface-dried foundry slag to a crushing device in batches, thereby improving the recycling efficiency of scrap steel in foundry slag and reducing energy waste.

[0006] To achieve the above objectives, the first aspect of this application proposes a foundry molten slag scrap recycling device, comprising a cooling tank internally filled with cooling water, a feeding mechanism, a spraying mechanism, a batch-by-batch cooling mechanism, a slag discharge mechanism, a waste heat recovery mechanism, a conveying assembly, and a crushing device. The feeding mechanism is disposed on the cooling tank and is used to transport high-temperature foundry molten slag into the cooling tank for cooling. The batch-by-batch cooling mechanism and the slag discharge mechanism are respectively disposed within the cooling tank, and the slag discharge mechanism is connected to the batch-by-batch cooling mechanism. The batch-by-batch cooling mechanism is used to cool the foundry molten slag entering the cooling tank in stages, and the slag discharge mechanism is used to transport the cooled foundry molten slag to the conveying assembly. The waste heat recovery mechanism is disposed on the cooling tank and is connected to the interior of the cooling tank. The waste heat recovery mechanism is used to recover and generate electricity from the steam generated after the high-temperature foundry molten slag comes into contact with the cooling water. The spraying mechanism... The spraying mechanism, located within the cooling tank, sprays cooling water onto the surface of the high-temperature molten casting slag entering the cooling tank. The conveying assembly includes a water filtration and conveying mechanism, a cooling water recovery tank, and a drying mechanism. The water filtration and conveying mechanism is positioned between the cooling tank and the crushing device. This mechanism conveys the cooled molten casting slag to the crushing device, allowing the cooling water carried on the surface of the molten casting slag to drip off naturally under gravity during conveying. The cooling water recovery tank is located below the water filtration and conveying mechanism and collects the cooling water separated from the molten casting slag. The drying mechanism is located on the water filtration and conveying mechanism and connected to the waste heat recovery mechanism. This drying mechanism evaporates the cooling water adhering to the surface of the cooled molten casting slag. The crushing device is located on the side of the water filtration and conveying mechanism away from the cooling tank and crushes and recovers the cooled molten casting slag.

[0007] The foundry slag scrap steel recycling device of this application embodiment can effectively recover the heat of high-temperature foundry slag and continuously transport the cooled and surface-dried foundry slag to the crushing device in batches, thereby improving the recycling efficiency of scrap steel in foundry slag and reducing energy waste.

[0008] In addition, the foundry slag scrap steel recycling device proposed in this application may also have the following additional technical features:

[0009] In one embodiment of this application, the feeding mechanism includes a feeding hopper and a guide ramp, wherein,

[0010] The feed hopper is fixedly connected to the top of the cooling box and communicates with the interior of the cooling box; the guide plate is fixedly connected inside the cooling box and is located below the feed hopper.

[0011] In one embodiment of this application, the spraying mechanism includes a water pump and a plurality of nozzles, wherein the plurality of nozzles are respectively fixedly installed in the cooling box and are respectively disposed above the guide plate; the water inlet of the water pump is connected to an external water source, and the water outlet of the water pump is connected to the plurality of nozzles through water pipes.

[0012] In one embodiment of this application, the waste heat recovery mechanism includes a gas collection hood, a gas collection pipe, a filter screen, a steam turbine generator, and a battery. The gas collection pipe is fixedly connected to the top of the cooling tank, and its two ends are respectively connected to the interior of the cooling tank and the air inlet of the steam turbine generator. The gas collection hood is fixedly connected to the inner top of the cooling tank and is connected to the gas collection pipe. The filter screen is disposed inside the gas collection pipe. The steam turbine generator is electrically connected to the charging terminal of the battery via a power rectifier and wires.

[0013] In one embodiment of this application, the batch-by-batch, layer-by-layer cooling mechanism includes multiple partitions, a rotating rod, multiple stirring blades, and a drive motor. The multiple partitions are respectively fixedly connected inside the cooling tank, and each partition has a drop groove, with the drop grooves on adjacent partitions being staggered. The rotating rod passes through the multiple partitions and is rotatably connected to each partition. The multiple stirring blades are respectively fixedly connected to the rotating rod and abut against the tops of the multiple partitions. The drive motor is mounted on the cooling tank, and its output shaft is coaxially connected to one end of the rotating rod via a coupling.

[0014] In one embodiment of this application, the slag discharge mechanism includes a hydraulic cylinder and a piston rod. A discharge chamber is provided between the lowermost partition plate and the inner bottom of the cooling box, and the drop groove on the lowermost partition plate is connected to the discharge chamber. A slag discharge trough connected to the discharge chamber is also provided on one side of the cooling box. The piston rod is adapted to the inner wall of the discharge chamber and is disposed in the discharge chamber. The hydraulic cylinder is fixedly installed on the cooling box, and the movable end of the hydraulic cylinder is fixedly connected to the end of the piston rod away from the slag discharge trough.

[0015] In one embodiment of this application, the water filtration conveying mechanism includes a vertical conveyor and a filter plate, wherein the vertical conveyor is disposed on one side of the cooling box; and the filter plate is fixedly connected to the conveyor belt of the vertical conveyor.

[0016] In one embodiment of this application, the drying mechanism includes a drying chamber and a diversion pipe, wherein the drying chamber is fixedly connected to one side of the cooling chamber, and the drying chamber has movable grooves for the filter plate to pass through on the side away from the cooling chamber, as well as on the top and bottom of the drying chamber; one end of the diversion pipe is connected to the gas collecting pipe, and the other end of the diversion pipe is fixedly connected to the drying chamber.

[0017] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0019] Figure 1 This is a schematic diagram of a foundry slag scrap steel recycling device according to an embodiment of this application;

[0020] Figure 2 This is a schematic diagram of a foundry slag scrap steel recycling device according to another embodiment of this application;

[0021] Figure 3 This is a schematic diagram of the waste heat recovery mechanism of a foundry slag scrap steel recycling device according to an embodiment of this application.

[0022] As shown in the figure: 1. Cooling box; 2. Feeding mechanism; 201. Feed hopper; 202. Guide plate; 3. Spraying mechanism; 301. Water pump; 302. Nozzle; 4. Batch-by-batch cooling mechanism; 401. Baffle plate; 402. Rotating rod; 403. Stirring blade; 404. Drive motor; 5. Slag discharge mechanism; 501. Hydraulic cylinder; 502. Piston column; 6. Waste heat recovery mechanism; 601. Gas collection hood; 602. Gas collection pipe; 603. Filter screen; 604. Steam turbine generator; 605. Battery; 7. Material conveying assembly; 71. Water conveying mechanism; 711. Vertical conveyor; 712. Filter plate; 72. Cooling water recovery box; 73. Drying mechanism; 731. Drying box; 732. Diverter pipe; 8. Crushing device. Detailed Implementation

[0023] Embodiments of this application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. Rather, embodiments of this application include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0024] The following describes the foundry slag scrap steel recycling device according to an embodiment of this application with reference to the accompanying drawings.

[0025] The foundry slag scrap steel recycling device provided in this application embodiment can be applied in foundry metallurgical plants to cool and crush high-temperature foundry slag. It can effectively recover the heat of high-temperature foundry slag and continuously transport the cooled and surface-dried foundry slag to the crushing device in batches, thereby improving the recycling efficiency of scrap steel in foundry slag and reducing energy waste.

[0026] like Figures 1-3 As shown, the foundry slag scrap steel recycling device of this application embodiment may include a cooling tank 1 containing cooling water, a feeding mechanism 2, a spraying mechanism 3, a batch-by-batch cooling mechanism 4, a slag discharge mechanism 5, a waste heat recovery mechanism 6, a material conveying assembly 7, and a crushing device 8.

[0027] The feeding mechanism 2 is installed on the cooling box 1. The feeding mechanism 2 is used to transport the high-temperature casting molten slag into the cooling box 1 for cooling. The batch-by-batch cooling mechanism 4 and the slag discharge mechanism 5 are respectively installed in the cooling box 1, and the slag discharge mechanism is connected to the batch-by-batch cooling mechanism 4. The batch-by-batch cooling mechanism 4 is used to cool the casting molten slag entering the cooling box 1 in stages. The slag discharge mechanism 5 is used to transport the cooled casting molten slag to the conveying assembly 7. The waste heat recovery mechanism 6 is installed on the cooling box 1 and is connected to the interior of the cooling box 1. The waste heat recovery mechanism 6 is used to recover the steam generated after the high-temperature casting molten slag comes into contact with the cooling water to generate electricity. The spraying mechanism 3 is installed in the cooling box 1. The spraying mechanism 3 is used to spray cooling water onto the surface of the high-temperature casting molten slag entering the cooling box 1.

[0028] The material conveying assembly 7 may include a water conveying mechanism 71, a cooling water recovery tank 72, and a drying mechanism 73.

[0029] The water conveying mechanism 71 is located between the cooling box 1 and the crushing device 8. The conveying mechanism is used to transport the cooled casting molten slag to the crushing device 8, and to allow the cooling water carried on the surface of the casting molten slag to drip naturally under the action of gravity during the transportation of the casting molten slag. The cooling water recovery box 72 is located below the water conveying mechanism. The cooling water recovery box 72 is used to collect the cooling water separated from the casting molten slag. The drying mechanism 73 is located on the water conveying mechanism 71 and is connected to the waste heat recovery mechanism 6. The drying mechanism 73 is used to evaporate the cooling water attached to the surface of the casting molten slag after cooling.

[0030] The crushing device 8 is located on the side of the water conveying mechanism 71 away from the cooling box 1. The crushing device 8 is used to crush and recycle the cooled casting molten slag.

[0031] It should be noted that the cooling tank 1 described in this embodiment is also equipped with a heat exchanger (not specifically marked in the figure) to absorb heat from the cooling water, thereby cooling the cooling water and recovering the heat carried in the cooling water.

[0032] It should be further noted that the crushing device 8 described in this embodiment is a commercially available crusher for crushing metal stones.

[0033] Specifically, when recycling scrap steel from high-temperature molten slag, relevant personnel first use a high-temperature molten slag transfer device to transport the high-temperature molten slag through the feeding mechanism 2 to the inside of the cooling box 1, so as to cool down the high-temperature molten slag by the cooling water inside the cooling box 1.

[0034] In addition, under the action of the batch-by-batch cooling mechanism 4, the molten casting slag entering the cooling box 1 will be cooled layer by layer. The molten casting slag that first enters the cooling box 1 will first be cooled and solidified, and then discharged from the cooling box 1 under the action of the slag discharge mechanism 5 and transported to the water filtration and conveying mechanism 71. While the water filtration and conveying mechanism 71 transports the cooled molten casting slag to the crushing device 8, most of the cooling water carried by the molten casting slag falls naturally into the cooling water recovery tank 72 under the action of gravity. This continuously transports the molten casting slag to the crushing device 8, improving the recovery efficiency of the molten casting slag. Compared with the existing technology of directly pouring high-temperature molten slag into the cooling box 1 at one time, the batch-by-batch cooling mechanism 4 can effectively avoid the problem of excessive accumulation of molten slag in the cooling box 1, thereby reducing the cooling efficiency and putting pressure on the cooling water. By continuously pouring in molten slag, the speed and flow rate of the slag flow can be controlled, so that it gradually enters the cooling box 1 and is cooled layer by layer. The slag flow will solidify and cool down during the layer-by-layer cooling process, and the cooled slag layer will be continuously discharged to maintain the space and cooling effect in the cooling box 1.

[0035] Furthermore, when the high-temperature casting molten slag enters the cooling box 1 and comes into contact with the cooling water, the cooling water evaporates and generates a large amount of steam. At this time, the waste heat recovery mechanism 6 recovers the steam to realize the utilization of the heat carried by the high-temperature casting molten slag, further improving the utilization rate of the high-temperature casting molten slag. Moreover, the spraying mechanism 3 continuously sprays cooling water onto the cooling box 1 and the surface of the casting molten slag entering the cooling box 1, which not only replenishes the cooling water in the cooling box 1 in a timely manner, but also increases the amount of steam generated in the cooling box 1.

[0036] The drying mechanism 73 is located between the water conveying mechanism 71 and the waste heat recovery mechanism 6. By storing part of the high-temperature steam generated between the high-temperature casting molten slag and the cooling water in the drying mechanism 73, the high-temperature steam is used to dry the surface moisture of the cooled casting molten slag.

[0037] In another embodiment of this application, such as Figure 1 and Figure 2 As shown, the feeding mechanism 2 may include a feeding hopper 201 and a guide plate 202.

[0038] The feeding hopper 201 is fixedly connected to the top of the cooling box 1 and communicates with the interior of the cooling box 1. The guide plate 202 is fixedly connected inside the cooling box 1 and is located below the feeding hopper 201.

[0039] Specifically, the high-temperature casting molten slag enters the cooling box 1 through the feed hopper 201 and rolls into the cooling water through the guide plate 202 for cooling and solidification.

[0040] In another embodiment of this application, such as Figure 1 and Figure 2 As shown, the spraying mechanism 3 may include a water pump 301 and multiple spray nozzles 302.

[0041] Multiple nozzles 302 are fixedly installed inside the cooling box 1, and are respectively positioned above the guide plate 202. The water inlet of the water pump 301 is connected to an external water source, and the water outlet of the water pump 301 is connected to the multiple nozzles 302 through water pipes.

[0042] Specifically, the water pump 301 absorbs external cooling water and continuously sprays it into the cooling tank 1 and onto the surface of the high-temperature casting molten slag entering the cooling tank 1 through multiple nozzles 302. This can generate a large amount of steam and continuously replenish the coolant in the cooling tank 1.

[0043] In another embodiment of this application, such as Figure 3 As shown, the waste heat recovery mechanism 6 may include a gas collection hood 601, a gas collection pipe 602, a filter screen 603, a steam turbine generator 604, and a battery 605.

[0044] The gas collecting pipe 602 is fixedly connected to the top of the cooling box 1, and both ends of the gas collecting pipe 602 are connected to the interior of the cooling box 1 and the air inlet of the steam turbine generator 604, respectively. The gas collecting cover 601 is fixedly connected to the inner top of the cooling box 1, and the gas collecting cover 601 is connected to the gas collecting pipe 602. The filter screen 603 is installed inside the gas collecting pipe 602. The steam turbine generator 604 is electrically connected to the charging terminal of the battery 605 through a power rectifier (not shown in the figure) and wires (not specifically marked in the figure).

[0045] Specifically, the high-temperature steam in the cooling box 1 is concentrated through the gas collection hood 601 and then enters the steam turbine generator 604 through the gas collection pipe 602 to drive the turbine to rotate, thereby driving the steam turbine generator 604 to generate electricity. This electricity is output through the output line of the steam turbine generator 604, and the AC power generated by the steam turbine generator 604 is converted into DC power by the power rectifier. Finally, the DC power converted by the power rectifier is connected to the charging terminal of the battery 605 through the wire to charge the battery 605. This process recovers the heat of the high-temperature casting molten slag to generate electricity and stores the electricity.

[0046] It should be noted that the waste heat recovery mechanism 6 described in this embodiment also includes a battery charging control device (not shown in the figure) for controlling the charging process of the storage battery 605. This device can monitor the battery status, including parameters such as current, voltage and temperature, and adjust the charging current and charging time as needed.

[0047] It should be noted that the filter screen 603 is detachably connected to the gas collecting pipe 602. The filter screen 603 is used to intercept impurities carried by high-temperature steam and is cleaned by periodically disassembling the filter screen 603.

[0048] In another embodiment of this application, such as Figure 1 and Figure 2 As shown, the batch-by-batch cooling mechanism 4 may include multiple baffles 401, rotating rods 402, multiple stirring blades 403, and a drive motor 404.

[0049] Multiple partitions 401 are fixedly connected to the cooling box 1. Each partition 401 has a drop groove (not specifically marked in the figure), and the drop grooves on adjacent partitions 401 are staggered. A rotating rod 402 passes through multiple partitions 401 and is rotatably connected to each partition 401. Multiple stirring blades 403 are fixedly connected to the rotating rod 402 and abut against the top of each partition 401. A drive motor 404 is mounted on the cooling box 1, and the output shaft of the drive motor 404 is coaxially connected to one end of the rotating rod 402 via a coupling.

[0050] It should be noted that the partition 401 described in this example is a commercially available sieve plate, which allows water vapor below the partition 401 to rise continuously.

[0051] Specifically, because the high-temperature casting molten slag carries a large amount of heat, the cooling water in the cooling tank 1 cannot cool a large amount of high-temperature molten slag at once. Therefore, it is necessary to continuously transport a small amount of high-temperature molten slag into the cooling tank 1. The casting molten slag entering the cooling tank 1 rolls off the guide plate 202 and falls onto the uppermost partition plate 401. Driven by the rotation of the stirring blade 403, it falls through the drop groove on the partition plate 401 into the next partition plate 401, gradually reducing the temperature of the casting molten slag until it falls onto the lowermost partition plate 401, thus completing the cooling process. The casting molten slag that has been cooled first is screened out, and the cooled casting molten slag is intermittently discharged through the slag discharge mechanism 5, realizing the continuous transportation of the cooled casting molten slag and improving the recycling efficiency of the casting molten slag scrap steel.

[0052] In another embodiment of this application, such as Figure 1 As shown, the slag discharge mechanism 5 may include a hydraulic cylinder 501 and a piston rod 502.

[0053] Among them, a discharge chamber (not specifically marked in the figure) is provided between the bottom partition 401 and the bottom of the cooling box 1, and the drop groove on the bottom partition 401 is connected to the discharge chamber. A slag discharge chute (not specifically marked in the figure) is also provided on one side of the cooling box 1 and is connected to the discharge chamber. The piston column 502 is adapted to the inner wall of the discharge chamber and is located in the discharge chamber. The hydraulic cylinder 501 is fixedly installed on the cooling box 1, and the movable end of the hydraulic cylinder 501 is fixedly connected to the end of the piston column 502 away from the slag discharge chute.

[0054] It should be noted that the piston rod 502 described in this embodiment maintains its position in the natural state, blocking the drop groove on the bottommost partition 401 to prevent cooling water from flowing out.

[0055] Specifically, the hydraulic cylinder 501 intermittently drives the piston column 502, so that when the movable end of the hydraulic cylinder 501 retracts, it gradually drives the piston column 502 to move, thereby releasing the blockage of the drop groove, allowing the casting molten slag and some cooling water to fall into the discharge chamber after cooling. When the movable end of the hydraulic cylinder 501 extends, it drives the piston column 502 to discharge the casting molten slag in the discharge chamber through the slag discharge groove, and then re-blocks the drop groove.

[0056] In another embodiment of this application, such as Figure 1 and Figure 2 As shown, the water filtration conveying mechanism 71 may include a vertical conveyor 711 and a filter plate 712.

[0057] The vertical conveyor 711 is installed on one side of the cooling box 1, and the filter plate 712 is fixedly connected to the conveyor belt of the vertical conveyor 711.

[0058] It should be noted that the vertical conveyor 711 described in this embodiment is a commercially available vertical circulating elevator.

[0059] Specifically, the cooled molten casting slag discharged through the slag discharge trough falls onto the filter plate 712 and is conveyed to the crushing device 8 by the vertical conveyor 711. At the same time, most of the cooling water carried by the molten casting slag drips into the cooling water recovery tank 72.

[0060] In another embodiment of this application, such as Figure 1 and Figure 2 As shown, the drying mechanism 73 may include a drying chamber 731 and a diversion pipe 732.

[0061] The drying chamber 731 is fixedly connected to one side of the cooling chamber 1. The side of the drying chamber 731 away from the cooling chamber 1, as well as the top and bottom of the drying chamber 731, are respectively provided with movable slots for the filter plate 712 to pass through. One end of the diversion pipe 732 is connected to the gas collecting pipe 602, and the other end of the diversion pipe 732 is fixedly connected to the drying chamber 731.

[0062] Specifically, the heat of the high-temperature steam is transferred to the drying chamber 731 through the diversion pipe 732, and the high temperature is used to dry the surface moisture of the casting molten slag.

[0063] As a possible alternative, the drying mechanism 73 described in this embodiment may also include a fan (not shown in the figure), which is located on one side of the vertical conveyor 711 to accelerate the drying efficiency of the casting molten slag by means of airflow.

[0064] In summary, the foundry slag scrap steel recycling device of this application embodiment can effectively recover the heat of high-temperature foundry slag and continuously transport the cooled and surface-dried foundry slag to the crushing device in batches, thereby improving the recycling efficiency of scrap steel in foundry slag and reducing energy waste.

[0065] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0066] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0067] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A device for recycling foundry slag scrap steel, characterized in that, It includes a cooling tank with internal cooling water, a feeding mechanism, a spraying mechanism, a batch-by-batch layer-by-layer cooling mechanism, a slag discharge mechanism, a waste heat recovery mechanism, a material conveying assembly, and a crushing device, among which, The feeding mechanism is installed on the cooling box and is used to transport high-temperature casting molten slag into the cooling box for cooling. The batch-by-batch cooling mechanism and the slag discharge mechanism are respectively installed in the cooling box, and the slag discharge mechanism is connected to the batch-by-batch cooling mechanism. The batch-by-batch cooling mechanism is used to cool the casting molten slag entering the cooling box in stages, and the slag discharge mechanism is used to transport the cooled casting molten slag to the conveying assembly. The waste heat recovery mechanism is installed on the cooling box and is connected to the interior of the cooling box. The waste heat recovery mechanism is used to recover and generate electricity from the steam generated after the high-temperature casting molten slag comes into contact with the cooling water. The spraying mechanism is installed inside the cooling box and is used to spray cooling water onto the surface of the high-temperature casting molten slag entering the cooling box. The material conveying assembly includes a water conveying mechanism, a cooling water recovery tank, and a drying mechanism, wherein... The water conveying mechanism is located between the cooling box and the crushing device. The conveying mechanism is used to convey the cooled casting molten slag into the crushing device, and to allow the cooling water carried on the surface of the casting molten slag to drip off naturally under the action of gravity when conveying the casting molten slag. The cooling water recovery tank is located below the water filtration and conveying mechanism. The cooling water recovery tank is used to collect the cooling water separated from the casting molten slag. The drying mechanism is mounted on the water conveying mechanism and is connected to the waste heat recovery mechanism. The drying mechanism is used to evaporate the cooling water adhering to the surface of the casting molten slag after cooling. The crushing device is located on the side of the water conveying mechanism away from the cooling box. The crushing device is used to crush and recycle the cooled casting molten slag. The waste heat recovery mechanism includes a gas collection hood, a gas collection pipe, a filter screen, a steam turbine generator, and a battery. The gas collecting pipe is fixedly connected to the top of the cooling box, and both ends of the gas collecting pipe are respectively connected to the interior of the cooling box and the air inlet of the steam turbine generator. The gas collection hood is fixedly connected to the inner top of the cooling box, and the gas collection hood is connected to the gas collection pipe; The filter screen is installed inside the air collecting pipe; The steam turbine generator is electrically connected to the charging terminal of the battery via a power rectifier and wires. The batch-by-batch, layer-by-layer cooling mechanism includes multiple baffles, rotating rods, multiple stirring blades, and a drive motor, wherein... Multiple partitions are fixedly connected inside the cooling box, and each of the multiple partitions is provided with a drop groove, and the drop grooves on adjacent partitions are staggered. The rotating rod passes through multiple partitions respectively, and the rotating rod is rotatably connected to each of the multiple partitions; The plurality of stirring blades are respectively fixedly connected to the rotating rod, and the plurality of stirring blades are respectively in contact with the top of the plurality of partitions; The drive motor is mounted on the cooling box, and the output shaft of the drive motor is coaxially connected to one end of the rotating rod via a coupling; The slag discharge mechanism includes a hydraulic cylinder and a piston rod, wherein... A discharge chamber is provided between the bottommost partition and the bottom of the cooling box, and the drop groove on the bottommost partition is connected to the discharge chamber. A slag discharge chute connected to the discharge chamber is also provided on one side of the cooling box. The piston rod is adapted to the inner wall of the discharge chamber, and the piston rod is disposed inside the discharge chamber; The hydraulic cylinder is fixedly installed on the cooling box, and the movable end of the hydraulic cylinder is fixedly connected to the end of the piston rod away from the slag discharge trough.

2. The foundry slag scrap steel recycling device according to claim 1, characterized in that, The feeding mechanism includes a feeding hopper and a guide ramp, wherein... The feed hopper is fixedly connected to the top of the cooling box, and the feed hopper is in communication with the interior of the cooling box; The guide plate is fixedly connected inside the cooling box and is located below the feed hopper.

3. The foundry slag scrap steel recycling device according to claim 2, characterized in that, The spraying mechanism includes a water pump and multiple spray nozzles, wherein, Multiple nozzles are fixedly installed inside the cooling box, and multiple nozzles are respectively positioned above the guide plate; The water pump's inlet is connected to an external water source, and the water pump's outlet is connected to multiple nozzles via water pipes.

4. The foundry slag scrap steel recycling device according to claim 1, characterized in that, The water filtration and conveying mechanism includes a vertical conveyor and filter plates, wherein, The vertical conveyor is located on one side of the cooling box; The filter plate is fixedly connected to the conveyor belt of the vertical conveyor.

5. The foundry slag scrap steel recycling device according to claim 4, characterized in that, The drying mechanism includes a drying chamber and a distribution pipe, wherein, The drying chamber is fixedly connected to one side of the cooling chamber, and the drying chamber has movable slots for the filter plate to pass through on the side away from the cooling chamber, as well as on the top and bottom of the drying chamber. One end of the diverter pipe is connected to the gas collecting pipe, and the other end of the diverter pipe is fixedly connected to the drying oven.

Images