Cooling and dust removing device for slag treatment system

Abstract

The utility model discloses a cooling and dust-removing device for a slag treatment system, which comprises a mounting frame fixed on a station retaining wall; the dust removal cover is mounted on the mounting frame, an air outlet is formed in the dust removal cover, and the dust removal cover is communicated with a dust removal pipeline of the dust removal system through the air outlet; the water fetching device comprises a water pipe communicated with a water source and a nozzle mounted on the water pipe, and the nozzle is arranged in the dust removal cover. The water fetching device sprays water to cool the desulfurization slag through a water pipe and a nozzle; meanwhile, dust-containing steam in the dust removal cover is pumped away under the negative pressure action of a dust removal fan of the dust removal system; therefore, the cooling and dust removing device not only can be used for cooling the desulfurization slag with water, but also can be used for synchronously collecting the dust-containing steam, so that the dust pollution is reduced, the environment in a plant is optimized, and the influence on the health of workers is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary treatment equipment for metallurgical slag treatment, and specifically to a cooling and dust removal device for a slag treatment system. Background Technology

[0002] Desulfurization slag is a byproduct of molten iron pretreatment, typically occurring at temperatures between 200-700℃. Currently, the mainstream methods for molten iron pretreatment are mechanical stirring and injection, with mechanical stirring being the most widely used. In mechanical stirring, a mechanical lifting device slowly lowers the stirring head into the molten iron, causing it to rotate and create a vortex. A desulfurizing agent composed of lime, limestone, fluorite, etc., is then added and reacts fully with the molten iron. The resulting dry, viscous desulfurization slag floats to the surface of the molten iron and is transferred to the slag pot via a slag remover. During the slag removal process, some molten iron inevitably enters the slag pot along with the slag.

[0003] In existing technologies, the main methods for treating desulfurization slag from molten iron are direct ladle turning and water cooling with the ladle. If the desulfurization slag is directly dumped into the slag turning area, the dry slag will generate a large amount of dust and graphite flakes, which will be scattered throughout the area during wind and shoveling, severely polluting the surrounding environment and posing a significant health hazard to workers. Water cooling with the ladle involves spraying water into a slag ladle filled with slag. The steam generated by the contact between the water and the high-temperature slag dissolves the f-CaO (free calcium oxide) in the slag, causing the desulfurization slag to expand and crack. Water cooling with the ladle is more effective; the desulfurization slag containing a certain amount of moisture after water spraying helps suppress dust. However, the dust-laden steam generated during the water spraying process can spread widely, affecting the visibility of crane operators and accelerating the corrosion of steel structures. This poses certain safety hazards in long-term operation and still fails to meet the requirements of modern clean production. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a cooling and dust removal device for slag treatment systems, especially a tank-mounted water cooling and dust collection device for desulfurization slag. This cooling and dust removal device can both cool the desulfurization slag with water and simultaneously collect dust-containing steam during the water spraying process, so as to reduce dust pollution, optimize the plant environment, and reduce the impact on workers' health.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This utility model provides a cooling and dust removal device for a slag treatment system. The slag treatment system includes a workstation retaining wall, a slag tank, tracks arranged on both sides of the slag tank, a slag tank car movably mounted on the tracks, and a dust removal system with a dust removal fan. The cooling and dust removal device includes:

[0007] Mounting bracket, which is fixed to the workstation retaining wall;

[0008] A dust collector hood is mounted on the mounting frame and has an exhaust port. The dust collector hood is connected to the dust collection pipe of the dust collection system through the exhaust port.

[0009] A water-spraying device, comprising a water pipe connected to a water source and a nozzle installed on the water pipe, wherein the nozzle is disposed inside the dust removal hood.

[0010] During operation, after the desulfurization slag tank trucks are loaded with slag, they move to the water spraying station directly below the dust removal hood. The water spraying device cools the desulfurization slag by spraying water through water pipes and nozzles. Simultaneously, the dust-laden vapor inside the dust removal hood is drawn away under the negative pressure of the dust removal system's dust removal fan. In this way, the cooling and dust removal device can both cool the desulfurization slag with water and simultaneously collect dust-laden vapor, reducing dust pollution, optimizing the plant environment, and minimizing the impact on worker health. Furthermore, the dust removal hood can move along a track, which will not obstruct normal filling and unloading, and can spray dust removal treatment on all desulfurization slag tanks along the track, reducing equipment costs.

[0011] In some embodiments, the mounting bracket is a steel structural frame.

[0012] In some embodiments, the cooling and dust removal device for the slag treatment system further includes a dust collection pipe, one end of which is connected to the exhaust port and the other end of which is connected to the dust removal pipeline.

[0013] In some embodiments, the dust removal duct is equipped with an electric valve.

[0014] In some embodiments, a control valve is also installed on the water pipe.

[0015] In some embodiments, a water baffle is also installed inside the dust collector hood, and the water baffle is located at the spray nozzle.

[0016] Above the mouth.

[0017] In some embodiments, the nozzle is a corrosion-resistant nozzle. Attached Figure Description

[0018] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0019] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0020] Figure 1 One of the structural schematic diagrams of the cooling and dust removal device provided by this utility model;

[0021] Figure 2 This is the second structural schematic diagram of the cooling and dust removal device provided by this utility model. Detailed Implementation

[0022] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] In one specific embodiment, the cooling and dust removal device provided by this utility model is used in a slag treatment system, which is used to treat desulfurization slag, a byproduct of molten iron pretreatment. Figures 1-2 As shown, the cooling and dust removal device includes a mounting frame, a dust removal hood 1, and a water spraying device 2. The mounting frame is fixed to the workstation retaining wall 6. The dust removal hood 1 is mounted on the mounting frame, which supports the dust removal hood 1. The dust removal hood 1 has an exhaust port, which is connected to the dust removal pipe of the dust removal system. The water spraying device 2 includes a water pipe connected to a water source and a nozzle 2-2 installed on the water pipe. The nozzle 2-2 is located inside the dust removal hood 1.

[0024] Specifically, the mounting frame is a steel structure frame, and the dust hood 1 and the waterproof baffle 3 are fixed on the steel structure frame. The steel structure frame is installed on the work station retaining wall 6. The water spraying device 2 is fixed on the dust hood 1, and the waterproof baffle 3 is fixed above the nozzle 2-2 of the water spraying device 2. The waterproof baffle 3 is made of stainless steel to prevent dust-containing vapor from directly corroding the dust collection hood.

[0025] During operation, after the desulfurization slag tanker is loaded with slag, it moves to the water spraying station directly below the dust collector hood 1. The water spraying device 2 sprays water onto the desulfurization slag through water pipes and nozzles 2-2 to cool it down. Simultaneously, the dust-laden vapor inside the dust collector hood 1 is drawn away under the negative pressure of the dust removal system's dust removal fan. In this way, the cooling and dust removal device can both cool the desulfurization slag with water and simultaneously collect dust-laden vapor, reducing dust pollution, optimizing the plant environment, and minimizing the impact on worker health. Furthermore, the dust collector hood 1 can move along a track, which will not obstruct normal filling and unloading, and can spray dust removal treatment on all desulfurization slag tanks along the track, reducing equipment costs.

[0026] In some embodiments, the cooling and dust removal device for the slag treatment system further includes a dust collection pipe, one end of which is connected to the exhaust port and the other end of which is connected to the dust removal pipeline. An electric valve is installed on the dust removal pipeline. That is, the dust collection pipe above the dust hood 1 is connected to the dust removal pipeline, and an electric valve is installed on the dust removal pipeline. When the slag truck arrives at the work station, the electric valve opens, and the dust-laden vapor is drawn away under the negative pressure of the dust removal system's dust removal fan.

[0027] Furthermore, a control valve 2-3 is installed on the water pipe, and the nozzle 2-2 is a corrosion-resistant nozzle. The water pumping device 2 is equipped with a control valve 2-3. When the slag truck arrives at the water pumping station, the control valve 2-3 opens, and the nozzle 2-2 begins to pump water for cooling. The nozzle 2-2 is a corrosion-resistant nozzle.

[0028] In some embodiments, a water baffle is also installed inside the dust collector hood, and the water baffle is located at the spray nozzle.

[0029] Above the mouth.

[0030] The slag car is equipped with a drive motor and wheels that cooperate with the rails on both sides. The drive motor is connected to the wheels used for driving.

[0031] To facilitate understanding, the structure and working process of the cooling and dust removal device provided by this utility model will be briefly described below using a specific application scenario as an example.

[0032] Please continue to refer to this. Figure 1 and Figure 2In a specific application scenario, the cooling and dust removal device provided by this invention includes a dust removal hood 1, a water spraying device 2 and a waterproof baffle 3 installed inside the dust removal hood 1. The dust removal hood 1 is fixed above the workstation retaining wall 6. The dust removal hood 1 is equipped with the water spraying device 2, which includes a water pipe 2-1 outside the dust removal hood 1, a control valve 2-3, and a nozzle 2-2 inside the dust removal hood 1. The top of the dust removal hood 1 is connected to the dust collection pipe 3. The dust collection pipe includes a connecting pipe 4-1 connected to the dust removal hood 1, a dust removal air duct 4-3 above the dust removal hood 1, a connecting flange 4-2, and an electric valve 4-4. The dust collection pipe 4 is connected to the dust removal system. The dust collection pipe 4 above the dust removal hood 1 is connected to the dust removal pipe of the dust removal system. An electric valve is installed on the dust removal pipe. When the slag truck arrives at the workstation, the electric valve opens, and the dust-laden vapor is drawn away under the negative pressure of the dust removal fan of the dust removal system. The water spraying device 2 is equipped with a control valve 2-3. When the slag truck arrives at the water spraying station, the control valve 2-3 opens, and the nozzle 2-2 begins spraying water for cooling. The nozzle 2-2 is a corrosion-resistant nozzle. The slag truck is equipped with a drive motor and wheels that engage with the tracks on both sides. The drive motor is connected to the wheels used for driving. The dust collector hood and waterproof baffle 3 are fixed to the steel structure frame, which is installed on the station retaining wall 6. The water spraying device 2 is fixed to the dust collector hood, and the waterproof baffle 3 is fixed above the nozzle 2-2 of the water spraying device 2. The waterproof baffle 3 is made of stainless steel to prevent direct corrosion of the dust collector hood by dust-laden vapor.

[0033] The method of using this cooling and dust removal device includes the following steps:

[0034] Step 1: After the desulfurization slag tanker truck 9 is loaded with slag, it moves on the track 7 under the drive of the drive motor 9-1 via the wheels 9-2 to the water spraying position directly below the dust removal hood 1.

[0035] Step 2: The control valve 2-3 of the water spraying device 2 is opened, and water is sprayed onto the desulfurization residue through the water pipe 2-1 and the nozzle 2-2 to cool it down;

[0036] Step 3: At the same time, the electric valve 4-4 on the dust collection pipe 4 is opened, and the dust-laden steam is drawn away under the negative pressure of the dust removal fan in the dust removal system;

[0037] Step 4: After water injection is completed, the desulfurization slag tanker 9 moves back to the initial preparation position along track 7.

[0038] This device can both cool the desulfurization slag with water and simultaneously collect dust-laden steam, reducing the labor intensity of workers, improving the plant environment, and at a low cost. This equipment can significantly improve the working environment of the plant, reduce corrosion, and extend the lifespan of the plant roof.

[0039] The above specific embodiments further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above are only specific embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made on the basis of the technical solution of this utility model should be included within the scope of protection of this utility model.

Claims

1. A cooling and dust removal device for a slag treatment system, the slag treatment system comprising a workstation retaining wall, a slag tank, tracks disposed on both sides of the slag tank, a slag tank car movably mounted on the tracks, and a dust removal system equipped with a dust removal fan; characterized in that, The cooling and dust removal device includes: Mounting bracket, which is fixed to the workstation retaining wall; A dust collector hood is mounted on the mounting frame and has an exhaust port. The dust collector hood is connected to the dust collection pipe of the dust collection system through the exhaust port. A water-spraying device, comprising a water pipe connected to a water source and a nozzle installed on the water pipe, wherein the nozzle is disposed inside the dust removal hood.

2. The quenching and dust removal device for a slag processing system according to claim 1, characterized by, The mounting bracket is a steel structure frame.

3. The quenching and dust removal device for a slag processing system according to claim 1, characterized by, It also includes a dust collection pipe, one end of which is connected to the exhaust port and the other end of which is connected to the dust removal pipe.

4. The quenching and dust removal device for a slag processing system according to claim 3, characterized by The dust removal pipeline is equipped with an electric valve.

5. The quenching and dust removal device for a slag processing system according to claim 1, characterized by, The water pipe is also equipped with a control valve.

6. The quenching and dust removal device for a slag processing system according to claim 1, characterized by A water baffle is also installed inside the dust removal hood, and the water baffle is located above the nozzle.

7. The quenching and dust removal device for a slag processing system according to claim 1, characterized by, The nozzle is a corrosion-resistant nozzle.

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