Stirring type steel slag treatment device and system thereof
Through the design of the dust cover and mixing mechanism in the steel residue treatment device, the problem of water vapor and dust permeated when the water was cooled with the water and the water was cooled.
Patent Information
- Application Number
- CN202420965091.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-07
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-05-07
AI Technical Summary
In the prior art, when dealing with desulfurization slag of molten iron, the cooling method with tank water pumping has problems of water vapor and dust, which affects the environment and workers' health, and has low cooling efficiency and cannot meet the requirements of modern clean production.
A mixing steel residue treatment device is designed, including the dust cover, mixing mechanism, and spray mechanism. The water vapor and dust are gathered through the spray mechanism, and the "V" type vortex generated by the mixer will accelerate the temperature drop Cool down with the temperature of the surface.
Effectively solve the problem of water vapor and dust, improve the collection rate of dust -containing steam, improve the working conditions of workers, improve the efficiency and effect of steel residue treatment, and shorten the treatment time.
Smart Images
Figure CN222411641U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of steel slag processing equipment, in particular to a stirring type steel slag processing device and a system thereof. Background Art
[0002] Steel slag is a by-product discharged by steel enterprises during steelmaking production. How to effectively recover scrap steel from steel slag and make high-value use of steel slag is an important issue facing steel enterprises. Among them, hot metal desulfurization slag is a by-product of hot metal pretreatment, and the temperature is generally between 200~700℃. During the slag removal process, more or less part of the molten iron enters the slag tank with the slag. The carbon in the molten iron will crystallize and precipitate during the cooling process. The main components of desulfurization slag are Ca0, SiO2 and TFe, of which the content of TFe is about 30~50%.
[0003] At present, the desulfurization slag produced by most steel enterprises has no high-value utilization. The stacking of desulfurization slag not only occupies land, pollutes water systems, and affects environmental quality, but also is a huge waste of desulfurization slag resources, affecting the economic benefits of enterprises. Therefore, it is one of the important work contents of the construction and development of steel enterprises to incorporate the treatment and utilization process of desulfurization slag into the steelmaking production process, fully recover the residual steel in the slag, and ensure the quality of desulfurization slag for further high-value resource utilization, improve the factory environment, reduce the land occupation of slag discharge, realize "clean production" and "garden-style factory", and take the road of sustainable development.
[0004] At present, the main methods for treating hot metal desulfurization slag are direct tank turning and water cooling with tank. If the desulfurization slag is directly dumped in the slag turning yard, the dry desulfurization slag will produce a large amount of dust and graphite wafers, which will spread in the wind and shovel during transportation, seriously polluting the surrounding environment and causing great harm to the health of workers. Water cooling with tank for hot metal desulfurization slag is to spray water into the slag tank filled with slag, and use the water vapor generated by the contact between water and high-temperature slag to digest the f-Ca0 in the slag, thereby causing the desulfurization slag to expand and crack.
[0005] The effect of cooling the hot metal desulfurization slag with water in the tank is good. The desulfurization slag after watering contains a certain amount of water, which plays a certain role in suppressing dust. However, when water is pumped from the upper surface of the slag tank, it takes a long time for the water to penetrate the desulfurization slag into the bottom of the slag tank, which greatly reduces the work efficiency. In addition, the dust-containing steam generated during the water pumping process is scattered, which not only affects the manual operation line of sight, but also accelerates the corrosion of the steel structure factory. There are certain safety hazards in the long-term operation process, and it still cannot meet the requirements of modern clean production. In addition, the current water pumping with the tank only sprays water on the surface of the slag tank. The cooling speed of the desulfurization slag inside and on the surface is inconsistent, and the temperature difference is large, resulting in a long cooling time and uneven decomposition of the desulfurization slag. Utility Model Content
[0006] The main purpose of the utility model is to provide a stirring type steel slag processing device and a system thereof, aiming to solve the problem of water vapor and dust diffused everywhere when the steel slag is cooled by water pumping from a tank.
[0007] To achieve the above-mentioned purpose, the utility model provides a stirring type steel slag processing device, including a dust removal cover, a stirring mechanism and a spraying mechanism, wherein:
[0008] The stirring mechanism includes a supporting frame, an agitator installed on the supporting frame, and a lifting mechanism connected to the stirring mechanism to drive it to extend into the dust hood. A hole is opened above the dust hood for the agitator to be inserted so as to stir the slag tank truck. The smoke outlet of the dust hood is connected to a dust removal pipe, and a spray mechanism is installed inside the dust hood.
[0009] Preferably, the dust hood is a movable dust hood, the dust hood is a three-sided closed dust hood, and refractory material is provided on the inner wall of the dust hood.
[0010] Preferably, a track is provided below the dust hood, and a roller is provided below the dust hood, and the roller is connected to a driving mechanism to drive it to move relative to the track.
[0011] Preferably, the driving mechanism includes a travel motor, and a limiting device is installed on the track to limit the maximum travel position of the dust hood.
[0012] Preferably, a plurality of cross beams are provided on the support frame, and a trolley for replacing old agitators and a trolley for storing and replacing new agitators are placed on the cross beams.
[0013] Preferably, the dust removal duct is also connected to a dust collector.
[0014] Preferably, the stirring slag processing device further comprises a control mechanism and an infrared thermal imager and a camera installed in the dust removal hood, and the control mechanism is electrically connected to the infrared thermal imager, the camera, the lifting mechanism and the spraying mechanism.
[0015] Preferably, the stirrer is connected to a hydraulic motor or an electric motor to drive it to rotate so as to stir the slag.
[0016] Preferably, a lifting trolley is supported on the support frame, a stirrer is mounted on the lifting trolley, and a lifting mechanism is connected to the lifting trolley to drive the lifting trolley to move up and down relative to the support frame.
[0017] The utility model further proposes a stirring slag processing system, including the above-mentioned stirring slag processing device, and also includes a slag tank truck used in conjunction with it. The slag tank truck includes a car body, and a fixed smoke shield is installed on the car body. When the slag tank truck is at a processing station in a dust removal hood, the fixed smoke shield completely closes the opening side of the dust removal hood.
[0018] The stirring type steel slag treatment proposed by the utility model, by setting a dust removal hood with a spray mechanism, gathers the water vapor and dust when the tank is cooled with water and then extracts them, thereby solving the problem of dust and water vapor diffusion, improving the collection rate of dust-containing steam, and improving the working conditions of post personnel. Furthermore, the "V"-shaped vortex generated by the rotation of the agitator accelerates the temperature drop of the desulfurized slag, making the temperature of the internal and surface desulfurized slag closer, improving work efficiency, and improving the effect of slag treatment, making the decomposition of steel slag more uniform, and shortening the slag treatment time. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a structural schematic diagram of a preferred embodiment of the stirring slag processing device of the utility model;
[0020] Figure 2 for Figure 1 Schematic diagram of the structure in the K direction;
[0021] Figure 3 The utility model is a schematic diagram of the control mechanism of the stirring slag processing device.
[0022] In the figure, 1-dust hood; 2-slag tank car; 3-lifting mechanism; 4-lifting trolley; 5-support frame; 6-old agitator replacement trolley; 7-new agitator storage and replacement trolley; 8-dust removal duct; 9-travel motor; 10-agitator; 11-cover plate; 12-dust collector; 13-fixed smoke baffle; 14-infrared thermal imager; 15-camera; 16-monitoring computer; 17-gigabit switch; 18-data server.
[0023] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0024] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0025] It should be noted that in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0026] The utility model provides a stirring type steel slag processing device.
[0027] In this preferred embodiment, a stirring slag treatment device includes a dust removal hood 1, a stirring mechanism and a spraying mechanism, wherein:
[0028] The stirring mechanism includes a support frame 5, an agitator 10 (a conical cross agitator 10 can be used) installed on the support frame 5, and a lifting mechanism 3 connected to the stirring mechanism to drive it to extend into the dust hood 1. A hole is opened above the dust hood 1 for the agitator 10 to be inserted so as to stir the slag tank truck. The smoke outlet of the dust hood 1 is connected to a dust removal pipe 8, and a spray mechanism is installed inside the dust hood 1.
[0029] In this embodiment, the dust hood 1 is a mobile dust hood, and the dust hood 1 is a three-sided closed dust hood (i.e., one side is open for the slag tanker 2 to enter and exit), and a refractory material is provided on the inner wall of the dust hood 1. The hole for inserting the agitator 10 on the dust hood 1 can be sealed by a cover plate 11, and the cover plate 11 can be opened or closed. When the cover plate 11 is opened, the agitator 10 can be inserted into the dust hood 1 through the hole.
[0030] Specifically, this embodiment provides a specific structure of a mobile dust hood 1: a track is provided below the dust hood 1, a roller is provided below the dust hood 1, and the roller is connected to a driving mechanism to drive it to move relative to the track. Two tracks can be provided.
[0031] Specifically, in this embodiment, a specific structure of a driving mechanism is proposed, which includes a travel motor 9, and a limit device is installed on the track to limit the maximum travel position of the dust cover 1. Limit devices are set at both ends of the track, and the limit device can adopt conventional structures such as proximity switches or limit plates, which are not limited by the present invention.
[0032] Specifically, a plurality of cross beams are provided on the support frame 5, on which the old agitator 10 replacement trolley 6 and the new agitator 10 storage and replacement trolley 7 are placed. When the agitator 10 is replaced, the old conical cross agitator 10 is placed on the old agitator 10 replacement trolley 6, and then hoisted out by a hoist. The new agitator 10 is stored on the new agitator 10 storage and replacement trolley 7. When the new conical cross agitator 10 needs to be replaced, the new agitator 10 storage and replacement trolley 7 is used, and the steps are the same as above.
[0033] The support frame 5 supports a lifting trolley 4, on which a stirrer 10 is mounted, and the lifting mechanism 3 is connected to the lifting trolley 4 to drive the lifting trolley 4 to move up and down relative to the support frame 5. For example, a vertical cylinder structure is formed on the support frame 5, and a slide rail is mounted on the inner side wall of the cylinder structure. The lifting trolley 4 is equipped with a pulley corresponding to the slide rail to achieve stable up and down sliding of the lifting trolley 4, and a stirrer 10 is hoisted below the lifting trolley 4.
[0034] The stirrer 10 is connected with a hydraulic motor or an electric motor to drive it to rotate to stir the slag. The dust removal pipeline 8 is also connected with a dust collector 12.
[0035] Furthermore, the stirring slag treatment device also includes a control mechanism and an infrared thermal imager 14 and a camera 15 installed in the dust removal cover 1. The control mechanism is electrically connected to the infrared thermal imager 14, the camera 15, the lifting mechanism 3 and the spraying mechanism. The control mechanism includes a gigabit switch 17, a monitoring computer 16, and a data server 18, which jointly analyze and calculate to control the optimal working time of the stirrer 10.
[0036] According to the factory building elevation requirements, slag tank size, on-site environment and other factors of each enterprise, Figure 1 and Figure 2 As shown, appropriate spraying, mixing and dust removal devices are selected and designed in size, and a series of intelligent operations of tank treatment of desulfurization slag are completed in conjunction with detection elements and automated programs.
[0037] The working process of this stirring slag processing device is as follows.
[0038] When the slag tank truck 2 carrying the slag tank full of desulfurization slag enters the water spraying station, the control mechanism controls the travel motor 9 to work, so that the dust hood 1 moves to the designated station, and then starts the spraying mechanism to spray water to the slag tank truck 2, and at the same time opens the dust collector 12. At this time, the lifting hole on the dust hood 1 for inserting the agitator 10 is sealed by the cover plate 11 to reduce the overflow of smoke and dust from the top of the dust hood 1.
[0039] After spraying for a period of time, the temperature of the surface desulfurization slag decreases and crusting occurs, and the spraying is stopped immediately. Since the temperature of the desulfurization slag is still very high at this time, the water inside the dust removal hood 1 will quickly vaporize and be drawn away by the dust removal pipeline 8, and the dust removal pipeline 8 is connected to the dust collector 12, so as to remove dust from the drawn gas.
[0040] After the water vapor is completely absorbed and discharged, the control mechanism controls the lifting trolley 4 and the agitator 10 to descend, the agitator 10 penetrates the surface of the desulfurization slag and descends to a certain depth of the desulfurization slag liquid surface, and then the agitator 10 starts to rotate and stir (since the spraying has stopped and the water vapor has been sucked away by the dust removal pipe 8, there is no risk of explosion. In order to further ensure the safety of the slag treatment process, the control mechanism analyzes, calculates and controls the agitator 10 and the spraying mechanism to work at fixed intervals, and stirring will begin after the water inside the dust hood 1 is quickly vaporized and sucked away by the dust removal pipe 8. Moreover, the above-mentioned treatment process is always inside the moving dust hood, and there is no danger to on-site personnel).
[0041] The stirring slag treatment proposed in this embodiment, by setting a dust removal hood 1 with a spray mechanism, gathers the water vapor and dust during the water cooling of the tank and then extracts them, thereby solving the problem of dust and water vapor diffusion, improving the collection rate of dust-containing steam, and improving the working conditions of post personnel. Furthermore, the "V"-shaped vortex generated by the rotation of the stirrer 10 accelerates the temperature drop of the desulfurized slag, making the temperature of the internal and surface desulfurized slag closer, improving work efficiency, and improving the effect of slag treatment, making the decomposition of steel slag more uniform, and shortening the slag treatment time.
[0042] The utility model further provides a stirring type steel slag processing system.
[0043] In this preferred embodiment, a stirring slag processing system includes the above-mentioned stirring slag processing device, and also includes a slag tank truck 2 used in conjunction with it. The slag tank truck 2 includes a car body, and a fixed smoke baffle 13 is installed on the car body. The fixed smoke baffle 13 is used to completely close the opening side of the dust hood 1. At this time, the dust hood is in a completely sealed state to minimize the overflow of smoke and dust.
[0044] When the slag tank truck 2 is at the processing position, the fixed smoke shield 13 on the slag tank truck 2 can close the open side of the dust hood 1, which is closed on three sides and open on one side, so that it is in a completely closed state, so that smoke and dust will hardly overflow. When the processing station needs to be cleaned or repaired, the mobile dust hood 1 can be driven away to facilitate daily maintenance work.
[0045] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A stirring slag treatment device, characterized in that: It includes a dust removal hood, a stirring mechanism and a spraying mechanism, wherein: The stirring mechanism includes a supporting frame, an agitator installed on the supporting frame, and a lifting mechanism connected to the stirring mechanism to drive it to extend into the dust hood. A hole is opened above the dust hood for the agitator to be inserted so as to stir the slag tank truck. The smoke outlet of the dust hood is connected to a dust removal pipe, and a spray mechanism is installed inside the dust hood.
2. The stirring slag processing device according to claim 1, characterized in that: The dust hood is a movable dust hood, which is a three-sided closed dust hood, and a refractory material is arranged on the inner side wall of the dust hood.
3. The stirring slag processing device according to claim 2, characterized in that: A track is provided below the dust hood, and a roller is provided below the dust hood. The roller is connected with a driving mechanism to drive the roller to move relative to the track.
4. The stirring slag processing device according to claim 3, characterized in that: The driving mechanism comprises a travel motor, and a limiting device is installed on the track to limit the maximum travel position of the dust removal hood.
5. The stirring slag processing device according to claim 1, characterized in that: The support frame is provided with a plurality of cross beams, on which a trolley for replacing an old agitator and a trolley for storing and replacing a new agitator are placed.
6. The stirring slag processing device according to claim 1, characterized in that: The dust removal pipeline is also connected to the dust collector.
7. The stirring slag processing device according to claim 1, characterized in that: It also includes a control mechanism, an infrared thermal imager and a camera installed in the dust removal cover. The control mechanism is electrically connected with the infrared thermal imager, the camera, the lifting mechanism and the spraying mechanism.
8. The stirring slag processing device according to claim 1, characterized in that: The stirrer is connected to a hydraulic motor or an electric motor to drive it to rotate so as to stir the slag.
9. The stirring slag processing device according to any one of claims 1 to 8, characterized in that: The support frame supports a lifting trolley, a stirrer is mounted on the lifting trolley, and a lifting mechanism is connected to the lifting trolley to drive the lifting trolley to move up and down relative to the support frame.
10. A stirring slag treatment system, characterized in that: It includes the stirring slag processing device as described in any one of claims 1 to 9, and also includes a slag tank truck used in conjunction with it, the slag tank truck includes a car body, and a fixed smoke shield is installed on the car body. When the slag tank truck is in a processing station in a dust removal hood, the fixed smoke shield completely closes the opening side of the dust removal hood.