Casing of high-temperature steel slag crushing and grading equipment

Abstract

The utility model relates to steel slag processing equipment, in particular to a machine shell of high-temperature steel slag crushing and grading equipment, which comprises a steel slag crushing bin and a steel slag grading bin, a slag outlet is arranged at the tail end of a conveying channel in the steel slag crushing bin, the steel slag grading bin is communicated with the steel slag crushing bin through the slag outlet, and a first interlayer cavity is arranged on the bin wall of the steel slag crushing bin. A second interlayer cavity is formed in the bin wall of the steel slag grading bin, the second interlayer cavity is communicated with the first interlayer cavity to form a waste heat utilization cavity, the waste heat utilization cavity is provided with a water injection connector and an exhaust connector, a third interlayer cavity is formed in the channel wall of a flue gas channel in the steel slag crushing bin, and a fourth interlayer cavity is formed in a baffle plate in the flue gas channel; the fourth interlayer cavity and the third interlayer cavity are both communicated with the waste heat utilization cavity, in the steel slag treatment process, water is continuously introduced into the waste heat utilization cavity, steel slag and smoke can be cooled, and after the water is heated into steam through the temperature of the steel slag and the smoke, the steam is led out from the exhaust connector and can be further used for power generation and the like.

Description

Technical Field

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

[0002] Currently, steel slag produced in steelmaking is mostly treated using the hot braising method. The hot braising method involves cooling the high-temperature steel slag to 400-500℃, crushing it to the specified particle size, and then pouring the steel slag into a braising tank or hot braising pool. After that, it undergoes a series of treatments such as water cooling, further crushing, and magnetic separation.

[0003] When steel slag is removed from the smelting furnace and transferred to the cooling equipment, its temperature is approximately 800-1000℃. The slag is in a mixed state of molten and solid phases. Because the hot-quenching process for steel slag has temperature and particle size requirements, it needs to be cooled to the required temperature and crushed to the required size before hot-quenching. Cooling the steel slag takes a long time; therefore, this method is not only time-consuming and inefficient, but also results in a significant waste of heat, and the accumulated cooling slag occupies a considerable amount of space.

[0004] To address the aforementioned issues, the applicant developed an integrated device that can improve the cooling and crushing efficiency of steel slag, while also utilizing the waste heat of the steel slag. However, the casing of traditional steel slag crushing and cooling equipment cannot achieve optimal performance. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a casing for a high-temperature steel slag crushing and grading equipment, which is suitable for use in an integrated machine for crushing, grading and waste heat recovery of high-temperature steel slag, thereby achieving better results.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a casing for a high-temperature steel slag crushing and grading device, comprising a steel slag crushing chamber and a steel slag grading chamber. The steel slag crushing chamber is provided with a slag inlet and a slag outlet. A conveying channel is provided between the slag inlet and the slag outlet inside the steel slag crushing chamber. The steel slag grading chamber is located at the slag outlet and communicates with the steel slag crushing chamber through the slag outlet. The steel slag grading chamber is provided with at least two grading outlets. The wall of the steel slag crushing chamber is provided with a first interlayer cavity, and the wall of the steel slag grading chamber is provided with a second interlayer cavity. The second interlayer cavity communicates with the first interlayer cavity and forms a waste heat utilization cavity. The waste heat utilization cavity is provided with a water injection port and an exhaust port. A flue gas channel is also provided inside the steel slag crushing chamber. The flue gas channel communicates with the outside of the steel slag crushing chamber, and the channel wall of the flue gas channel is provided with a third interlayer cavity, which communicates with the waste heat utilization cavity. High-temperature steel slag can enter the steel slag grading chamber through the conveying channel inside the steel slag crushing chamber. While the steel slag is being processed in the steel slag crushing chamber and the steel slag grading chamber, water is continuously circulated in the waste heat utilization chamber to cool the steel slag. At the same time, the high temperature of the steel slag will also heat the water in the waste heat utilization chamber into water vapor. The water vapor is discharged from the exhaust port and can be used for power generation, etc.

[0007] As an optional technical solution of this utility model, the flue gas passage is an S-shaped passage. This extends the path of the flue gas within the passage, thereby fully cooling the flue gas and making full use of its residual heat.

[0008] As an optional technical solution of this utility model, a baffle is provided in the flue gas passage, and a fourth interlayer cavity is provided inside the baffle, which is connected to the third interlayer cavity.

[0009] As an optional technical solution of this utility model, a slag outlet is provided on the bottom plate of the steel slag crushing chamber, and a support plate is provided at the slag outlet inside the steel slag crushing chamber. A flue gas channel is formed between the support plate and the top wall of the steel slag crushing chamber, and a flue gas outlet is provided on the side wall of the steel slag crushing chamber corresponding to the flue gas channel. The baffle plate includes an upper baffle plate and a lower baffle plate. At least one lower baffle plate is provided on the support plate. An upper gap is reserved between the lower baffle plate and the top wall of the steel slag crushing chamber. An upper baffle plate is provided between adjacent lower baffle plates. The upper baffle plate is connected to the top wall of the steel slag crushing chamber and a lower gap is reserved between it and the support plate.

[0010] As an optional technical solution of this utility model, the flue gas inlet of the flue gas channel is set at the slag inlet, which can take into account both the steel slag crushing chamber and the steel slag grading chamber, and prevent flue gas from being discharged from the slag inlet or the grading outlet.

[0011] As an optional technical solution of this utility model, a steel slag grading bin is provided with a steel slag grading mechanism installation position. A connection hole is reserved in the steel slag grading bin at the steel slag grading mechanism installation position, and the connection hole communicates with the second interlayer cavity.

[0012] As an optional technical solution of this utility model, a feeding hopper is provided at the slag inlet. The feeding hopper and the steel slag crushing chamber are an integral structure, and a first interlayer cavity is also provided inside the feeding hopper.

[0013] As an optional technical solution of this utility model, the wall of the steel slag crushing bin is provided with an installation clearance hole. The installation clearance hole is a strip-shaped hole set along the conveying channel, and a telescopic sealing cover is set in the installation clearance hole. The telescopic sealing cover has a pre-reserved roller mounting hole.

[0014] Compared with the prior art, the present invention has the following advantages: 1. The wall of the steel slag crushing chamber is provided with a first interlayer cavity, the wall of the steel slag grading chamber is provided with a second interlayer cavity, the wall of the flue gas passage is provided with a third interlayer cavity, and the baffle plate in the flue gas passage is provided with a fourth interlayer cavity. The first, second, third, and fourth interlayer cavities are interconnected. Water is injected into the waste heat utilization cavity, which can quickly cool the steel slag during the steel slag treatment process. The waste heat of the steel slag heats the water in the waste heat utilization cavity into steam, which can be discharged from the exhaust port for power generation and other purposes; 2. The flue gas passage is set as an S-shaped passage, or a baffle plate is set in the flue gas passage. In the limited space inside the steel slag crushing chamber, the travel path of the flue gas is extended to achieve the effect of flue gas cooling. Attached Figure Description

[0015] 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.

[0016] Figure 1 This is a schematic diagram of the casing structure;

[0017] Figure 2 This is a schematic diagram of the casing used in a high-temperature steel slag crushing and grading equipment.

[0018] In the diagram: 1. Steel slag crushing bin, 11. Slag inlet, 12. Slag outlet, 13. Conveying channel, 14. Support plate, 15. Upper baffle plate, 16. Lower baffle plate, 17. Flue gas outlet, 18. Feed hopper, 19. Installation clearance hole, 2. Steel slag grading bin, 21. Installation position of steel slag grading mechanism. Detailed Implementation

[0019] 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

[0020] like Figure 1 and Figure 2 As shown, the casing of a high-temperature steel slag crushing and grading device includes a steel slag crushing chamber 1 and a steel slag grading chamber 2. A conveying channel 13 is provided inside the steel slag crushing chamber 1. The conveying channel 13 is in the form of a conveying plane or a U-shaped trough. A slag inlet 11 is provided at the front end of the conveying channel 13, and a slag outlet 12 is provided at the rear end of the conveying channel 13. After the high-temperature steel slag is fed into the steel slag crushing chamber 1 through the slag inlet 11, it can move along the conveying channel 13 towards the slag outlet 12. The conveying channel 13 can be designed to be inclined towards the slag outlet 12 to facilitate the conveying of the high-temperature steel slag. The steel slag crushing mechanism of the high-temperature steel slag crushing and grading device can be installed inside the steel slag crushing chamber 1 to crush the steel slag.

[0021] The steel slag grading bin 2 is located at the slag outlet 12. The steel slag grading bin 2 is connected to the steel slag crushing bin 1 through the slag outlet 12. The high-temperature steel slag in the steel slag crushing bin 1 enters the steel slag grading bin 2 from the slag outlet 12 along the conveying channel 13. The steel slag grading bin 2 has at least two grading outlets. Above the grading outlets, a steel slag grading mechanism installation position 21 is provided inside the steel slag grading bin 2. After the steel slag grading mechanism of the high-temperature steel slag crushing and grading equipment is installed inside the steel slag grading bin 2, it can grade and output the steel slag according to its particle size.

[0022] The steel slag crushing chamber 1 has a first interlayer cavity in its wall, and the conveying channel 13 is located within the coverage area of ​​the first interlayer cavity. The steel slag grading chamber 2 has a second interlayer cavity in its wall, which communicates with the first interlayer cavity and forms a waste heat utilization chamber. The steel slag crushing chamber 1 and / or the steel slag grading chamber 2 are equipped with a water injection port and an exhaust port. The water injection port is used to connect to a water source or water supply pipeline, and the exhaust port is used to connect to an air tank or steam pipeline. During the crushing and grading process of steel slag using the casing of this invention, water is continuously added to the waste heat utilization chamber through the water injection port. The high temperature of the high-temperature steel slag heats the water in the waste heat utilization chamber, and the steam generated by the heated water is discharged from the exhaust port. By continuously circulating water into the waste heat utilization chamber, not only can the cooling rate of the high-temperature steel slag be improved, but the waste heat of the high-temperature steel slag can also be fully utilized. The generated steam can be used for power generation, storage, and resale after being exported.

[0023] The steel slag crushing chamber 1 is also equipped with a flue gas channel, which is connected to the outside of the chamber. This channel allows the high-temperature steel slag flue gas to be discharged. The channel wall has a third interlayer cavity, which is connected to a waste heat utilization cavity. Water and steam in the waste heat utilization cavity circulate through this third interlayer cavity, cooling the flue gas in the flue gas channel and utilizing its waste heat.

[0024] In some embodiments, the flue gas passage is preferably an S-shaped passage, which extends the path of the flue gas within the limited space of the steel slag crushing chamber 1, thereby fully cooling the flue gas and making full use of its heat.

[0025] In other embodiments, a baffle plate is provided inside the flue gas passage, and a fourth interlayer cavity is provided inside the baffle plate, which is connected to the third interlayer cavity. By providing a baffle plate in the flue gas passage, the path of the flue gas in the flue gas passage is changed, allowing the flue gas to make multiple back-and-forth detours, thereby increasing the travel distance of the flue gas, and thus fully cooling the flue gas and making full use of the waste heat of the flue gas.

[0026] As a concrete example, please refer to Figure 1 The slag outlet 12 is located on the bottom plate of the steel slag crushing chamber 1. A support plate 14 is provided inside the steel slag crushing chamber 1 at the slag outlet 12. The support plate 14 is horizontal or slightly inclined and is connected to the multi-sided chamber wall of the steel slag crushing chamber 1. A third interlayer cavity is provided inside the support plate 14. The space between the support plate 14 and the top wall of the steel slag crushing chamber 1 is a flue gas passage. The flue gas passage is located in the area at the end of the conveying channel 13. A flue gas outlet 17 is provided on the side wall of the steel slag crushing chamber 1 corresponding to the flue gas passage.

[0027] The baffle plate includes an upper baffle plate 15 and a lower baffle plate 16. At least one lower baffle plate 16 is provided on the support plate 14. The lower baffle plate 16 is vertical or slightly inclined. An upper gap is reserved between the upper edge of the lower baffle plate 16 and the top wall of the steel slag crushing chamber 1. A fourth interlayer cavity is provided inside the lower baffle plate 16, which communicates with the third interlayer cavity in the support plate 14. An upper baffle plate 15 is provided between two adjacent lower baffle plates 16 or between a lower baffle plate 16 and the chamber wall at the end of the steel slag crushing chamber 1. The upper baffle plate 15 is vertical or slightly inclined. Preferably, the upper baffle 15 and the lower baffle 16 are parallel, with a lower gap reserved between the lower edge of the upper baffle 15 and the support plate 14. The upper baffle 15 also has a fourth interlayer cavity inside, which is connected to the first interlayer cavity. The upper baffle 15 and the lower baffle 16 are arranged alternately in the flue gas channel, so that the high-temperature flue gas detours multiple times through the flue gas channel and passes through the upper gap and the lower gap in sequence. The high-temperature flue gas travels a long distance, and the high-temperature flue gas can be effectively cooled, and the waste heat energy of the high-temperature flue gas is fully utilized.

[0028] The flue gas inlet of the flue gas channel is set at the slag inlet 11. This arrangement allows the flue gas from both the steel slag crushing chamber 1 and the steel slag grading chamber 2 to enter the flue gas channel, preventing the flue gas from escaping from the slag inlet 11 or the grading outlet.

[0029] In order to improve the cooling effect of steel slag and make full use of the waste heat of steel slag, the grading components of the steel slag grading mechanism may also be equipped with a double-layer cavity. Therefore, a connection hole is reserved at the installation position 21 of the steel slag grading mechanism on the steel slag grading bin 2. The connection hole is connected to the second double-layer hole. The double-layer space of the steel slag grading mechanism can be connected to the second double-layer cavity through a pipe.

[0030] To facilitate the installation and use of the steel slag crushing mechanism in the high-temperature steel slag crushing and grading equipment, installation clearance holes 19 are provided on one side wall or on the opposite two side walls of the steel slag crushing chamber 1. The installation clearance holes 19 are strip-shaped holes set along the conveying channel 13. A telescopic sealing cover is installed inside the installation clearance hole 19. The telescopic sealing cover has a pre-reserved roller shaft mounting hole. When the crushing roller shaft of the steel slag crushing mechanism is installed through the roller shaft mounting hole, the telescopic sealing cover also changes according to the position of the steel slag crushing mechanism as the steel slag crushing mechanism reciprocates along the conveying channel 13, so that the installation clearance hole 19 is always in a sealed state, reducing the heat loss of the steel slag.

[0031] To facilitate the feeding of steel slag into the steel slag crushing chamber 1, a feed hopper 18 is also provided at the slag inlet 11 on the steel slag crushing chamber 1. The feed hopper 18 and the steel slag crushing chamber 1 are an integral structure, and the first interlayer chamber of the steel slag crushing chamber 1 extends into the interior of the feed hopper 18.

[0032] Please see Figure 2 When the casing of this utility model is used in a high-temperature steel slag crushing and grading equipment, the steel slag crushing mechanism of the high-temperature steel slag crushing and grading equipment is set at the steel slag crushing chamber 1. The steel slag crushing mechanism moves back and forth along the conveying channel 13, crushing the steel slag in the conveying channel 13 while also pulling the steel slag towards the slag outlet 12. The steel slag grading mechanism of the high-temperature steel slag crushing and grading equipment is set inside the steel slag grading chamber 2. According to the particle size of the steel slag, the steel slag is output from different grading outlets. During the steel slag treatment process, the water in the waste heat utilization chamber cools the steel slag and flue gas. At the same time, the waste heat of the steel slag and flue gas exchanges heat with the water in the waste heat utilization chamber. The generated steam is discharged through the exhaust port for power generation or storage and resale.

[0033] 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.

[0034] 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 casing for a high-temperature steel slag crushing and grading device, characterized in that: The slag crushing chamber includes a steel slag crushing chamber (1) and a steel slag grading chamber (2). The steel slag crushing chamber (1) is provided with a slag inlet (11) and a slag outlet (12). A conveying channel (13) is provided between the slag inlet (11) and the slag outlet (12) inside the steel slag crushing chamber (1). The steel slag grading chamber (2) is located at the slag outlet (12) and is connected to the steel slag crushing chamber (1) through the slag outlet (12). The steel slag grading chamber (2) is provided with at least two grading outlets. The wall of the steel slag crushing chamber (1) is provided with a first interlayer cavity. The wall of the steel slag grading chamber (2) is provided with a second interlayer cavity. The second interlayer cavity is connected to the first interlayer cavity and forms a waste heat utilization cavity. The waste heat utilization cavity is provided with a water injection interface and an exhaust interface. A flue gas channel is also provided inside the steel slag crushing chamber (1). The flue gas channel is connected to the outside of the steel slag crushing chamber (1). The channel wall of the flue gas channel is provided with a third interlayer cavity. The third interlayer cavity is connected to the waste heat utilization cavity.

2. The casing of a high-temperature steel slag crushing and grading device according to claim 1, characterized in that: The flue gas passage is S-shaped.

3. The casing of a high-temperature steel slag crushing and grading device according to claim 1, characterized in that: A baffle plate is installed inside the flue gas passage, and a fourth interlayer cavity is installed inside the baffle plate. The fourth interlayer cavity is connected to the third interlayer cavity.

4. The casing of a high-temperature steel slag crushing and grading device according to claim 3, characterized in that: A slag outlet (12) is provided on the bottom plate of the steel slag crushing chamber (1). A support plate (14) is provided inside the steel slag crushing chamber (1) at the slag outlet (12). A flue gas passage is formed between the support plate (14) and the top wall of the steel slag crushing chamber (1). A flue gas outlet (17) is provided on the side wall of the steel slag crushing chamber (1) corresponding to the flue gas passage. The baffle plate includes an upper baffle plate (15) and a lower baffle plate (16). At least one lower baffle plate (16) is provided on the support plate (14). An upper gap is reserved between the lower baffle plate (16) and the top wall of the steel slag crushing chamber (1). An upper baffle plate (15) is provided between adjacent lower baffle plates (16). The upper baffle plate (15) is connected to the top wall of the steel slag crushing chamber (1) and a lower gap is reserved between it and the support plate (14).

5. The casing of a high-temperature steel slag crushing and grading device according to any one of claims 2-4, characterized in that: The flue gas inlet of the flue gas passage is located at the slag inlet (11).

6. The casing of a high-temperature steel slag crushing and grading device according to claim 5, characterized in that: The steel slag grading bin (2) is equipped with a steel slag grading mechanism installation position (21). A connection hole is reserved at the steel slag grading mechanism installation position (21) in the steel slag grading bin (2), and the connection hole is connected to the second interlayer cavity.

7. The casing of a high-temperature steel slag crushing and grading device according to claim 1, characterized in that: A feed hopper (18) is provided at the slag inlet (11). The feed hopper (18) and the steel slag crushing chamber (1) are an integral structure, and the feed hopper (18) also has a first interlayer cavity inside.

8. The casing of a high-temperature steel slag crushing and grading device according to claim 1, characterized in that: The steel slag crushing bin (1) has an installation clearance hole (19) on its bin wall. The installation clearance hole (19) is a strip hole set along the conveying channel (13). A telescopic sealing cover is set inside the installation clearance hole (19), and a roller mounting hole is reserved on the telescopic sealing cover.

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