Crushing and conveying device for high-temperature steel slag

Abstract

The utility model relates to steel slag processing equipment, in particular to a high-temperature steel slag crushing and conveying device which comprises a steel slag crushing bin and a crushing mechanism, an interlayer cavity is arranged in the bin wall of the steel slag crushing bin, a conveying channel is arranged in the steel slag crushing bin, and the crushing mechanism comprises a crushing roller, a crushing driving part and a walking vehicle. A crushing roller and a crushing driving part are arranged on the walking vehicle, the crushing driving part drives the crushing roller to rotate, the crushing roller extends into the steel slag crushing bin, crushing teeth are arranged at the position, corresponding to the conveying channel, of the crushing roller, the crushing roller is driven to rotate and can be driven to reciprocate along the conveying channel, and the crushing teeth rotate along with the crushing roller; the steel slag in each position in the conveying channel is crushed, meanwhile, the material pushing effect can be achieved, the steel slag in each position in the conveying channel is pushed and conveyed along the conveying channel, in the steel slag treatment process, waste heat of the steel slag heats cooling water in the interlayer cavity, the waste heat of the steel slag is utilized, and cooling of the steel slag is facilitated.

Description

Technical Field

[0001] This utility model relates to steel slag processing equipment, specifically to a crushing and conveying device for high-temperature steel slag. Background Technology

[0002] Currently, steel slag produced in steelmaking is mostly treated using the hot blanching method. This method involves cooling the high-temperature steel slag to 400-500℃ and crushing it to a specified particle size. The slag is then poured into a blanching tank or hot blanching pool, followed by further cooling with water, crushing, and magnetic separation. When the steel slag is removed from the smelting furnace and transferred to the cooling equipment, its temperature is approximately 800-1000℃, and it exists in a mixed molten and solid state. Because the hot blanching treatment of steel slag has specific temperature and particle size requirements, it is necessary to cool the slag to the required temperature and crush it to the required size before hot blanching.

[0003] Using existing steel slag crushing equipment requires the steel slag to be cooled into a solid state before crushing, which takes a lot of time and affects the efficiency of steel slag processing. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a crushing and conveying device for high-temperature steel slag, which enables the cooling, crushing and conveying of steel slag to be carried out simultaneously, thereby improving the efficiency of steel slag processing.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a high-temperature steel slag crushing and conveying device, including a steel slag crushing chamber and a crushing mechanism. A conveying channel is provided inside the steel slag crushing chamber. An installation clearance hole is provided on the side wall of the steel slag crushing chamber. The installation clearance hole is arranged along the direction of the conveying channel. A telescopic sealing structure is provided on the steel slag crushing chamber at the installation clearance hole. The crushing mechanism includes a crushing roller, a crushing drive component, and a traveling vehicle. The traveling vehicle is located outside the steel slag crushing chamber. The crushing roller and the crushing drive component are provided on the traveling vehicle. The rotating part of the crushing drive component is connected to the crushing roller and the crushing drive component drives the crushing roller to rotate. The crushing roller passes through the installation clearance hole. The crushing roller is connected to the telescopic sealing structure and rotates relative to the telescopic sealing structure. Crushing teeth are provided on the crushing roller at the position corresponding to the conveying channel. The traveling vehicle drives the crushing teeth that rotate with the crushing roller to move back and forth along the crushing channel, crushing the steel slag in the conveying channel and conveying the steel slag along the conveying channel. The crushing mechanism travels back and forth along the conveying channel, crushing the steel slag in various parts of the conveying channel while also conveying the steel slag in various parts of the conveying channel, thus achieving the effect of material removal.

[0006] As an optional solution of this utility model, the steel slag crushing chamber has a jacketed cavity inside its wall. The steel slag crushing chamber is equipped with a water injection port and an exhaust port, which are connected to the jacketed cavity. Continuously introducing cooling water into the jacketed cavity can accelerate the cooling rate of the steel slag, and the high temperature of the steel slag can be used to heat the cooling water into steam for output, thus realizing the utilization of the waste heat of the steel slag.

[0007] As an optional embodiment of this invention, a crushing cylinder is positioned within the steel slag crushing chamber, and the outer wall of the crushing cylinder is provided with a first row of teeth and a second row of teeth. The first and second rows of teeth are arranged alternately along the circumference, and each row of teeth includes at least one crushing tooth. The crushing teeth of the first row and the crushing teeth of the second row are staggered relative to each other in the axial direction of the crushing cylinder. This specific arrangement of the crushing teeth not only achieves thorough crushing of the steel slag but also facilitates better material feeding and unloading.

[0008] As an optional embodiment of this invention, the crushing roller is mounted on the traveling vehicle via a water-cooled bearing housing, and a water-cooling cavity is provided inside the crushing roller and / or the crushing cylinder. Providing a water-cooled bearing housing and a water-cooling cavity inside the crushing roller and / or the crushing cylinder allows the crushing mechanism to operate for extended periods in high-temperature environments.

[0009] As an optional solution of this utility model, the exterior of the steel slag crushing chamber is provided with a traveling rail, which is set along the direction of the conveying channel, and the traveling vehicle is set on the traveling rail and moves back and forth along the traveling rail.

[0010] As an optional solution of this utility model, installation clearance holes are provided on the two opposite side walls of the steel slag crushing chamber, and traveling rails are provided on the opposite sides of the steel slag crushing chamber. Traveling vehicles are provided on each traveling rail, and the two ends of the crushing roller extend out of the steel slag crushing chamber and are respectively connected to the two traveling vehicles.

[0011] As an optional solution of this utility model, the steel slag crushing chamber is provided with a flue gas outlet, and a flue gas channel is provided inside the steel slag crushing chamber. The flue gas channel is connected to the flue gas outlet, and a second interlayer cavity is provided inside the channel wall of the flue gas channel. The second interlayer cavity is connected to the first interlayer cavity.

[0012] As an optional solution of this utility model, a baffle plate is provided in the flue gas passage, and a third interlayer cavity is provided in the baffle plate, which is connected to the second interlayer cavity. The flue gas of steel slag is also cooled before being discharged, and the waste heat of the flue gas is also utilized.

[0013] As an optional solution of this utility model, the flue gas passage is an S-shaped passage.

[0014] As an optional solution of this utility model, the steel slag crushing chamber is provided with a slag inlet at the head end of the conveying channel, and a slag inlet hopper is provided at the slag inlet. The slag inlet hopper is provided with a slag inlet guide surface and the slag inlet guide surface is connected to the conveying channel. The slag inlet hopper is provided with a fourth interlayer cavity, which is connected to the first interlayer cavity.

[0015] Compared with the prior art, the advantages of this utility model are as follows: 1. There is no need to set up a special pushing mechanism in the steel slag crushing chamber. The crushing roller drives each crushing tooth to rotate, which can not only crush the steel slag, but also play a material-removing role. While being driven to rotate, the crushing roller is also driven to move back and forth along the crushing channel, which can crush the steel slag at all points in the conveying channel and can also move the steel slag at all points in the conveying channel. The steel slag in the conveying channel is completely crushed and the steel slag is prevented from clogging and accumulating in the steel slag crushing chamber; 2. The wall of the steel slag crushing chamber is set with a jacket cavity, so that the steel slag crushing teeth form a heat exchanger. While the steel slag is being crushed and conveyed, the heat of the steel slag heats the cooling water in the jacket cavity into water vapor. The water vapor is drawn out from the exhaust port and can be used for power generation and other purposes, or it can be injected into the gas bag for storage and resale. The steel slag can also be rapidly cooled during the crushing process in the steel slag crushing chamber. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the device.

[0018] Figure 2 This is a schematic diagram of the crushing mechanism;

[0019] In the diagram: 1. Steel slag crushing bin, 2. Conveying channel, 3. Installation clearance hole, 4. Telescopic sealing structure, 5. Crushing roller, 6. Traveling vehicle, 7. Crushing teeth, 8. Crushing cylinder, 9. Traveling rail, 10. Flue gas channel, 11. Flue gas outlet, 12. Baffle plate, 13. Slag feed hopper. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0021] Please see Figure 1 and Figure 2 A high-temperature steel slag crushing and conveying device includes a steel slag crushing chamber 1 and a crushing mechanism. The steel slag crushing chamber 1 is provided with a conveying channel 2. The steel slag crushing chamber 1 is provided with a slag inlet at the head end of the conveying channel 2 and a slag outlet at the tail end of the conveying channel 2. After the steel slag enters the steel slag crushing chamber 1 through the slag inlet, the crushing mechanism can simultaneously crush the steel slag and push it along the conveying channel 2 towards the slag outlet. The conveying channel 2 is in the form of a conveying surface or a U-shaped conveying trough. The conveying channel 2 can be set to be inclined to a certain extent towards the slag outlet to improve the conveying effect of the steel slag.

[0022] The side wall of the steel slag crushing chamber 1 is provided with an installation clearance hole 3, which is used for the crushing roller 5 of the crushing mechanism to pass through. The installation clearance hole 3 is an elongated hole set along the length of the conveying channel 2. The steel slag crushing chamber 1 is provided with a telescopic sealing structure 4 at the installation clearance hole 3. The telescopic sealing structure 4 is in the form of a telescopic sealing cover or the prior art. The telescopic sealing structure 4 is provided with an installation hole suitable for the crushing roller 5 to pass through.

[0023] The crushing mechanism includes a crushing roller 5, a crushing drive component, and a traveling carriage 6. The traveling carriage 6 is located outside the steel slag crushing chamber 1 and can reciprocate along the length of the mounting clearance hole 3. The crushing roller 5 is mounted on the traveling carriage 6 via a bearing structure and can rotate relative to the traveling carriage 6. The crushing drive component is a drive motor, mounted on the traveling carriage 6, and its rotating part is connected to the crushing roller 5. The crushing drive component drives the crushing roller 5 to rotate. The crushing roller 5 passes through the mounting clearance hole 3 and extends into the interior of the steel slag crushing chamber 1. The crushing roller 5 passes through the mounting hole of the telescopic sealing structure 4 and is connected to the telescopic sealing structure 4 via rotating components such as bearings. The crushing roller 5 can rotate relative to the telescopic sealing structure 4. Several crushing teeth 7 are provided on the crushing roller 5 corresponding to the conveying channel 2. The crushing roller 5 drives each crushing tooth 7 to rotate, which can crush the steel slag in the conveying channel 2. The crushing roller 5 can rotate under appropriate direction ( Figure 1 (Counterclockwise rotation in view) can also push the steel slag towards the slag outlet. The traveling vehicle 6 drives the rotating crushing roller 5 to travel back and forth along the length of the installation avoidance hole 3, crushing the steel slag in various parts of the conveying channel 2, and can also push the steel slag in various parts of the conveying channel 2 towards the slag outlet.

[0024] Please see Figure 2Specifically, the crushing roller 5 is perpendicular to the conveying channel 2, and a crushing cylinder 8 is mounted on the crushing roller 5. The crushing cylinder 8 is located within the crushing chamber corresponding to the conveying channel 2, and is coaxial with the crushing roller 5. The outer wall of the crushing cylinder 8 is provided with a first row of teeth and a second row of teeth, which are staggered along the circumference of the crushing cylinder 8. Preferably, there are multiple first and second rows of teeth, evenly distributed along the circumference of the crushing cylinder 8. Each of the first and second rows of teeth includes at least one crushing tooth 7. The crushing teeth 7 of the first and second rows are distributed along the axial direction of the crushing cylinder 8, and are staggered relative to each other in the axial direction. The reasonable distribution of the crushing teeth 7 on the outer wall of the crushing cylinder 8 not only ensures a good crushing effect on the steel slag but also serves to convey the steel slag.

[0025] The crushing roller 5 is mounted on the traveling vehicle 6 via a water-cooled bearing seat, and a water-cooling chamber is provided inside the crushing roller 5 and / or the crushing cylinder 8. Each water-cooling chamber is connected to the water injection space of the water-cooled bearing seat, and the water-cooled bearing seat is equipped with an exhaust port. During the crushing of steel slag, cooling water is continuously supplied to the water-cooling chamber and the water-cooled bearing seat to cool down the crushing roller, the crushing cylinder, and the water-cooled bearing seat. The water vapor formed by the vaporization of the cooling water is drawn out from the exhaust port and used for power generation or stored in the gas tank.

[0026] The steel slag crushing chamber 1 is provided with a traveling rail 9 on its exterior. The traveling rail 9 is set along the direction of the conveying channel 2. The traveling vehicle 6 is set on the traveling rail 9. The traveling vehicle 6 is equipped with a traveling drive component and traveling wheels. The traveling drive component is a motor, etc. The traveling drive component drives the traveling wheels to rotate, so that the traveling vehicle 6 can move back and forth along the traveling rail 9.

[0027] As a preferred embodiment, the steel slag crushing chamber 1 is provided with walking rails 9 on both sides of the outside, and each walking rail 9 is provided with a traveling vehicle 6. The opposite side walls of the steel slag crushing chamber 1 are provided with installation clearance holes 3. The two ends of the crushing roller 5 pass through the two installation clearance holes 3 respectively and are rotatably connected to the two traveling vehicles 6. This design can improve the stability of the crushing roller 5 and ensure the crushing and conveying effect of the steel slag.

[0028] The steel slag crushing chamber 1 has a jacketed cavity inside its wall. The chamber is equipped with a water injection port and an exhaust port. The exhaust port connects to an air manifold or steam pipeline. Both the water injection port and the exhaust port are connected to the jacketed cavity. After the water injection port is connected to a water injection pipeline or water source, cooling water can be introduced into the jacketed cavity. While the steel slag is being crushed and conveyed within the crushing chamber 1, the high temperature of the steel slag heats the water in the jacketed cavity into steam, which is then discharged through the exhaust port. At this point, the steel slag crushing chamber 1 acts as a heat exchanger. During the steel slag processing, it not only accelerates the cooling of the steel slag but also utilizes the high temperature of the steel slag to heat the cooling water into steam, which can be used for power generation or stored and resold. By rationally setting parameters such as the length of the conveying channel 2, the traveling speed of the traveling vehicle 6, and the rotation speed of the crushing roller 5, the steel slag can be discharged from the discharge port at a temperature suitable for hot-quenching.

[0029] The steel slag crushing chamber 1 is also equipped with a flue gas outlet 11 on its wall, and a flue gas passage 10 is provided inside the steel slag crushing chamber 1. The flue gas passage 10 and the flue gas outlet 11 facilitate the discharge of flue gas from the steel slag. A second interlayer cavity is provided inside the wall of the flue gas passage 10, which is connected to the first interlayer cavity. As the flue gas travels along the flue gas passage 10, the flue gas is cooled and its temperature is utilized.

[0030] A baffle plate 12 is installed inside the flue gas passage 10 to adjust the path of the flue gas within the passage 10, allowing it to travel a longer distance. This ensures the flue gas is adequately cooled and its heat is fully utilized before being discharged from the flue gas outlet 11. Please refer to [link / reference]. Figure 1 The baffle plate 12 includes an upper baffle plate and a lower baffle plate. The upper baffle plate is connected to the top wall of the flue gas passage 10, and there is a lower gap between the lower end of the upper baffle plate and the lower wall of the flue gas passage 10. The lower baffle plate is connected to the lower wall of the flue gas passage 10, and there is an upper gap between the upper end of the lower baffle plate and the upper wall of the flue gas passage 10. The upper and lower baffle plates are arranged alternately, so that the flue gas is discharged after multiple detours and changes of direction within the flue gas passage 10. A third interlayer cavity is provided inside the baffle plate 12, and the third interlayer cavity communicates with the second interlayer cavity.

[0031] When a portion of the wall of the steel slag crushing chamber 1 is used to form the flue gas passage 10, the third interlayer cavity of some baffles 12 can also be directly connected to the first interlayer cavity.

[0032] Of course, flue gas passage 10 can also be directly set as an S-shaped passage.

[0033] A slag inlet hopper 13 is provided at the slag inlet of the steel slag crushing chamber 1. The slag inlet hopper 13 extends to the outside of the steel slag crushing chamber 1 and is provided with a slag inlet guide surface, which is connected to the conveying channel 2 to facilitate the introduction of steel slag from the slag inlet into the conveying channel 2. The interior of the slag inlet hopper 13 is provided with a fourth interlayer cavity, which communicates with the first interlayer cavity. The slag inlet hopper 13 and the steel slag crushing chamber 1 can also be configured as an integral structure.

[0034] When the high-temperature steel slag first enters the steel slag crushing chamber 1, the steel slag is in a mixed state of solid and molten state. The steel slag moves along the conveying channel 2, gradually cools down and gradually becomes solid. The crushing mechanism moves back and forth along the conveying channel 2, crushing the solid steel slag while also pushing the steel slag towards the slag outlet, so that the steel slag can be continuously conveyed towards the slag outlet.

[0035] In this specification, the terms "an embodiment," "example," "specific example," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. 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.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A crushing and conveying device for high-temperature steel slag, characterized in that: The system includes a steel slag crushing chamber (1) and a crushing mechanism. The steel slag crushing chamber (1) has a conveying channel (2). An installation clearance hole (3) is provided on the side wall of the steel slag crushing chamber (1), and the installation clearance hole (3) is arranged along the direction of the conveying channel (2). A telescopic sealing structure (4) is provided on the steel slag crushing chamber (1) at the installation clearance hole (3). The crushing mechanism includes a crushing roller (5), a crushing drive component, and a traveling vehicle (6). The traveling vehicle (6) is located outside the steel slag crushing chamber (1), and the traveling vehicle (6) is equipped with the crushing roller (5) and the crushing drive component. The rotating part of the crushing drive is connected to the crushing roller (5) and the crushing drive drives the crushing roller (5) to rotate. The crushing roller (5) passes through the installation clearance hole (3) and is connected to the telescopic sealing structure (4) and rotates relative to the telescopic sealing structure (4). The crushing roller (5) is provided with crushing teeth (7) at the position corresponding to the conveying channel (2). The traveling vehicle (6) drives the crushing teeth (7) that rotate with the crushing roller (5) to move back and forth along the crushing channel, crushing the steel slag in the conveying channel (2) and conveying the steel slag along the conveying channel (2).

2. The high-temperature steel slag crushing and conveying device according to claim 1, characterized in that: The steel slag crushing chamber (1) has a sandwich cavity inside its wall. The steel slag crushing chamber (1) is equipped with a water injection port and an exhaust port, which are connected to the sandwich cavity.

3. The high-temperature steel slag crushing and conveying device according to claim 2, characterized in that: The crushing roller (5) is positioned inside the steel slag crushing chamber (1) and a crushing cylinder (8) is provided. The outer wall of the crushing cylinder (8) is provided with a first row of teeth and a second row of teeth. The first row of teeth and the second row of teeth are arranged alternately along the circumferential direction. The first row of teeth and the second row of teeth each include at least one crushing tooth (7). Each crushing tooth (7) of the first row of teeth and each crushing tooth (7) of the second row of teeth are offset from each other in the axial direction of the crushing cylinder (8).

4. The high-temperature steel slag crushing and conveying device according to claim 3, characterized in that: The crushing roller (5) is mounted on the traveling vehicle (6) via a water-cooled bearing seat, and a water-cooled cavity is provided inside the crushing roller (5) and / or the crushing cylinder (8).

5. The high-temperature steel slag crushing and conveying device according to claim 3, characterized in that: The steel slag crushing chamber (1) is provided with a walking rail (9) on its exterior. The walking rail (9) is set along the direction of the conveying channel (2). The traveling vehicle (6) is set on the walking rail (9) and moves back and forth along the walking rail (9).

6. The high-temperature steel slag crushing and conveying device according to claim 5, characterized in that: The steel slag crushing chamber (1) has two opposite side walls with installation clearance holes (3), and two opposite sides of the steel slag crushing chamber (1) are provided with walking rails (9). Each walking rail (9) is provided with a walking vehicle (6). The two ends of the crushing roller (5) extend out of the steel slag crushing chamber (1) and are connected to the two walking vehicles (6) respectively.

7. The high-temperature steel slag crushing and conveying device according to claim 2, characterized in that: The steel slag crushing chamber (1) is provided with a flue gas outlet (11). A flue gas passage (10) is provided inside the steel slag crushing chamber (1). The flue gas passage (10) is connected to the flue gas outlet (11). A second interlayer cavity is provided inside the passage wall of the flue gas passage (10). The second interlayer cavity is connected to the first interlayer cavity.

8. The high-temperature steel slag crushing and conveying device according to claim 7, characterized in that: A baffle plate (12) is provided inside the flue gas passage (10), and a third interlayer cavity is provided inside the baffle plate (12), which is connected to the second interlayer cavity.

9. The high-temperature steel slag crushing and conveying device according to claim 7, characterized in that: The flue gas passage (10) is an S-shaped passage.

10. The high-temperature steel slag crushing and conveying device according to claim 7, characterized in that: The steel slag crushing chamber (1) has a slag inlet at the head end of the conveying channel (2), and a slag hopper (13) is provided at the slag inlet. The slag hopper (13) has a slag guide surface and the slag guide surface is connected to the conveying channel (2). The slag hopper (13) has a fourth interlayer cavity inside, and the fourth interlayer cavity is connected to the first interlayer cavity.

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