Steel slag dephosphorization treatment system

Abstract

The utility model provides a steel slag dephosphorization treatment system which comprises a travelling trolley device, a reaction tank assembly, a stirring device, a hydrotropy feeding device and a slagging-off device, a reaction space is arranged in the reaction tank assembly, and the hydrotropy feeding device is provided with a discharging end used for enabling a cosolvent to flow into the reaction space. Converter steel slag is poured into the reaction tank assembly, the hydrotropy feeding device adds a cosolvent into the reaction tank assembly, stirring is conducted through the stirring device, after stirring, under the action of the cosolvent, phosphorus-rich steel slag and iron-rich steel slag are layered, the phosphorus-rich steel slag is located on the upper layer of the reaction space, and the reaction tank assembly rotates to a certain inclined angle; the whole equipment is simple in process, all the devices are matched with one another, the dephosphorization efficiency of the steel slag is greatly improved, iron in the separated steel slag can be recycled, the treatment amount of waste slag is greatly reduced, and therefore the environmental load is reduced, and the economic benefit is improved.

Description

Technical Field

[0001] This utility model relates to the field of converter steelmaking technology, and in particular to a steel slag dephosphorization treatment system. Background Technology

[0002] Converter steelmaking is widely used in the production of various types of steel, such as steel for construction, machinery manufacturing, automobiles, and shipbuilding, and is one of the most important steelmaking methods in the modern steel industry.

[0003] Currently, converter slag contains high levels of phosphorus. Directly returning it to the converter will exacerbate phosphorus recycling and enrichment. Phosphorus is a harmful element in steel, leading to problems such as steel embrittlement and decreased weldability, thus affecting steel quality. Domestic converter slag treatment mainly employs methods such as hot pouring, slag simmering, and shallow steam simmering to granulate the slag. Then, magnetic separation and screening are used to separate iron and slag powder. The recovered iron is returned to the steelmaking process, while the slag powder is used as a filler material in cement and bricks. However, this treatment method has low slag recovery efficiency, complex processes, and can cause pollution during the process.

[0004] Therefore, it is necessary to propose a steel slag dephosphorization treatment system to solve or at least alleviate the above-mentioned defects. Utility Model Content

[0005] The main objective of this invention is to provide a steel slag dephosphorization system to solve the problems of complex procedures and low steel slag recycling efficiency in existing steel slag treatment methods.

[0006] To achieve the above objectives, this utility model provides a steel slag dephosphorization treatment system, including a running trolley device, a reaction tank assembly, a stirring device, a fluxing feeding device, and a slag removal device; wherein,

[0007] The running trolley device is movably connected to the trolley track along the longitudinal direction, the reaction tank assembly is connected to the running trolley device, the reaction tank assembly has a reaction space inside, and the reaction tank assembly is rotatably arranged around its own longitudinal axis.

[0008] The stirring device is connected to the support and spaced above the reaction vessel assembly. The stirring device is vertically retractable and rotatable about its own vertical axis. The solubilizing feeder is connected to the support and located on one side of the stirring device in the lateral direction. The solubilizing feeder has a discharge end for the solubilizing solvent to flow into the reaction space.

[0009] The slag removal device is used to remove phosphorus-rich steel slag from the reaction space. It is set on one side of the trolley track along the lateral direction and spaced apart at the front end of the stirring device.

[0010] Preferably, the operating trolley device includes an operating trolley and two bearing units arranged longitudinally opposite each other, each bearing unit including a bearing housing bracket, a bearing housing, and a reaction vessel shaft; wherein,

[0011] The running trolley is movably connected to the trolley track along the longitudinal direction. The bearing seat bracket is connected to the running trolley. The bearing seat is connected to the top of the bearing seat bracket. The reaction vessel shaft is rotatably connected to the bearing seat. The two ends of the reaction vessel assembly are respectively connected to the two reaction vessel shafts.

[0012] Preferably, the reaction vessel assembly includes a reaction vessel and a reaction vessel bracket. The reaction vessel bracket has lifting lugs protruding upward at both ends along the longitudinal direction. The two lifting lugs are respectively connected to the two rotating shafts of the reaction vessels, and the reaction vessels are connected to the reaction vessel bracket.

[0013] Preferably, the stirring device includes a stirring drive motor, a stirring coupling, a lifting platform, a stirring bearing housing, a stirring shaft, and a stirring paddle. The lifting platform is connected to the top inner side of the support frame, and the driving end of the lifting platform is vertically retractable. The stirring bearing housing is connected to the driving end of the lifting platform. The stirring paddle is connected to the bottom end of the stirring shaft. The stirring shaft is rotatably connected to the stirring bearing housing, and its top end extends out of the stirring bearing housing. The driving end of the stirring drive motor is connected to the stirring shaft through the stirring coupling.

[0014] Preferably, the assembly also includes a replacement platform, which is connected to the support and positioned above the reaction vessel assembly. The replacement platform has a channel through which the stirring paddle passes.

[0015] Preferably, the bottom of the replacement platform is coated with an insulation layer.

[0016] Preferably, the fluxing and feeding device includes a fluxing tank, a feeder, and a chute. The fluxing tank is connected to a support, the feeder is connected to the discharge end of the fluxing tank, one end of the chute is connected to the feeder, and the other end of the chute passes through and extends out of the replacement platform to allow the fluxing agent to flow into the reaction space.

[0017] Preferably, the slag removal device includes a slag removal machine support base and a slag removal machine. The slag removal machine support base is connected to the frame and is located on one side of the trolley track along the transverse direction. The slag removal machine is connected to the slag removal machine support base.

[0018] Preferably, the assembly also includes a guide plate and a waste slag bin. The guide plate is connected to the running trolley and is spaced apart on the side of the reaction tank assembly near the slag removal device. The cross-section of the guide plate is a right-angled triangle shape, including a high end and a low end. The waste slag bin is connected to the frame, and the low end extends out of the running trolley to guide phosphorus-rich steel slag into the waste slag bin.

[0019] Preferably, the running trolley device further includes a drive support, a reaction tank coupling, and a reaction tank drive mechanism. The drive support is connected to the running trolley, the reaction tank drive mechanism is connected to the drive support, and the drive end of the reaction tank drive mechanism is connected to the reaction tank shaft through the reaction tank coupling.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention provides a steel slag dephosphorization treatment system, comprising a trolley device, a reaction tank assembly, a stirring device, a fluxing feeder, and a slag removal device. The trolley device is movably connected to a trolley track along the longitudinal direction. The reaction tank assembly is connected to the trolley device and has a reaction space inside. The reaction tank assembly is rotatably arranged around its own longitudinal axis. The stirring device is connected to a support and spaced above the reaction tank assembly. The stirring device is vertically retractable and rotatably arranged around its own vertical axis. The fluxing feeder is connected to the support and located on one side of the stirring device along the transverse direction. The fluxing feeder has a discharge end for the flux to flow into the reaction space. The slag removal device is used to remove phosphorus-rich steel slag from the reaction space. It is located on one side of the trolley track along the transverse direction and spaced at the front end of the stirring device. In this process, converter slag is poured into the reaction vessel assembly, and a fluxing feeder adds flux to the assembly. The mixture is then stirred by a stirring device. Under the influence of the flux, the phosphorus-rich slag and iron-rich slag separate into layers, with the phosphorus-rich slag at the top of the reaction space. The reaction vessel assembly rotates to a tilted angle, and a slag remover separates and removes the phosphorus-rich slag, while the iron-rich slag is poured back into the converter for the steelmaking process. The overall equipment process is simple, with each device working in concert, significantly improving the efficiency of slag dephosphorization. The iron in the separated slag can also be recovered, greatly reducing the amount of waste slag to be treated, thus lowering the environmental impact and improving economic benefits. Attached Figure Description

[0022] 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 the structures shown in these drawings without creative effort.

[0023] Figure 1 This is a side view of the initial state in one embodiment of the present invention;

[0024] Figure 2 This is a perspective view of the solubilizing and stirring state in one embodiment of the present invention;

[0025] Figure 3 This is a perspective view of the slag removal state in one embodiment of the present invention.

[0026] The purpose, features, and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0027] Explanation of icon numbers:

[0028] 10. Trolley device; 110. Trolley; 111. Guide vane; 120. Bearing unit; 121. Bearing seat bracket; 122. Bearing seat; 123. Reactor shaft; 130. Drive support; 140. Reactor coupling; 150. Reactor drive mechanism; 20. Reactor assembly; 210. Reactor; 211. Reaction space; 220. Reactor bracket; 221. Lifting lug; 30. Stirring device; 310. 320. Stirring drive motor; 330. Stirring coupling; 340. Elevator; 350. Stirring bearing housing; 360. Stirring shaft; 40. Stirring paddle; 410. Flux feeding device; 420. Flux storage tank; 430. Feeder; 50. Chute; 510. Slag removal device; 520. Slag removal machine support; 530. Waste slag bin; 60. Trolley track; 70. Support frame; 710. Changing platform; 720. Insulation layer. Detailed Implementation

[0029] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0030] 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.

[0031] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0032] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0033] Please see the appendix Figure 1-3 This utility model provides a steel slag dephosphorization treatment system in one embodiment, including a running trolley device 10, a reaction tank assembly 20, a stirring device 30, a fluxing feed device 40, and a slag removal device 50. First, it should be noted that in this application, "longitudinal" refers to the extension direction along the trolley track 60, and "lateral" refers to the width direction along the trolley track 60. For details, please refer to the accompanying drawings. The specific technical solution is as follows:

[0034] The trolley device 10 is longitudinally movably connected to the trolley track 60. The reaction tank assembly 20 is connected to the trolley device 10. The reaction tank assembly 20 has a reaction space 211 and is rotatably arranged about its own longitudinal axis. The stirring device 30 is connected to the support 70 and is spaced above the reaction tank assembly 20. The stirring device 30 is vertically retractable and rotatably arranged about its own vertical axis. The fluxing feeder 40 is connected to the support 70 and is located on one side of the stirring device 30 along the lateral direction. The fluxing feeder 40 has a discharge end for the flux to flow into the reaction space 211. The slag removal device 50 is used to remove phosphorus-rich steel slag from the reaction space 211. It is located on one side of the trolley track 60 along the lateral direction and spaced at the front end of the stirring device 30.

[0035] Specifically, the steel slag dephosphorization system in this application includes a trolley device 10, a reaction tank assembly 20, a stirring device 30, a fluxing feeding device 40, and a slag removal device 50. The trolley device is used to install the reaction tank assembly 20 and, by virtue of its mobility on the trolley track 60, drives the reaction tank assembly 20 to other devices for process coordination. The reaction tank assembly 20 is used to receive converter steel slag and simultaneously receive fluxing agent, allowing the converter steel slag to react under the action of the fluxing agent, thereby separating phosphorus-rich steel slag and iron-rich steel slag. Therefore, the reaction tank assembly... The component 20 has a reaction space 211 to accommodate converter steel slag and flux, facilitating mixing and reaction. The flux feeding device 40 is used to provide the flux, and the stirring device 30 accelerates the reaction and improves the efficiency of slag separation by stirring after the flux is added to the reaction space 211. Finally, the slag removal device 50 removes the phosphorus-rich steel slag distributed on the upper layer. It is worth mentioning that the main components of the flux include lime (CaO), fluorite (CaF2), iron oxide (FeO), bauxite, and borax, which are commonly used products in industry, so they will not be described in detail here.

[0036] The stirring device 30 is connected to a support 70, which is a gate-shaped support for the site, allowing the trolley 110 to pass smoothly through it. The stirring device 30, when mounted on the support 70, can be spaced above the reaction tank assembly 20. When the trolley 10 moves below the stirring device 30, the stirring device 30, due to its vertically extendable feature, extends into the reaction space 211 of the reaction tank assembly 20 to stir and accelerate the reaction. The co-solvent feeding device 40 is connected to the support 70 and located on one side of the stirring device 30 along its lateral direction, allowing the co-solvent to be added before stirring. Therefore, it has a discharge end for the co-solvent to flow into the reaction space 211. This discharge end is positioned so that it aligns with the reaction space of the reaction tank assembly 20 when the trolley 10 moves below the stirring device 30. In space 211; after the stirring reaction, the trolley device 10 continues to move forward to the side of the slag removal device 50 for slag removal. Therefore, the slag removal device 50 is set on one side of the trolley track 60 along the transverse direction and spaced apart at the front end of the stirring device 30. Here, the front end refers to the direction of travel of the trolley device 10. When the trolley device 10 is located on the side of the slag removal device 50, since the reaction tank assembly 20 is rotatably set around its own longitudinal axis, the reaction tank assembly 20 is rotated to tilt towards the slag removal device 50, so that the liquid surface of the internal reaction space 211 is tilted. The phosphorus-rich steel slag on the upper layer of the liquid surface after separation by the flux is removed by the slag removal device 50. The iron-rich steel slag remaining in the reaction space 211 after removal can be poured into the converter and returned to the steelmaking process, which makes the iron recovery efficiency of the steel slag high and greatly reduces the amount of waste slag to be treated.

[0037] In a preferred embodiment of this utility model, the running trolley device 10 includes a running trolley 110 and two bearing units 120 arranged longitudinally opposite each other. Each bearing unit 120 includes a bearing seat bracket 121, a bearing seat 122, and a reaction vessel shaft 123.

[0038] The running trolley 110 is movably connected to the trolley track 60 along the longitudinal direction. The bearing seat bracket 121 is connected to the running trolley 110. The bearing seat 122 is connected to the top of the bearing seat bracket 121. The reaction vessel shaft 123 is rotatably connected to the bearing seat 122. The two ends of the reaction vessel assembly 20 are respectively connected to the two reaction vessel shafts 123.

[0039] It should be noted that the trolley 110 is placed on the trolley track 60 and travels on it. The bearing unit 120 is used for the installation of the reaction tank assembly 20 and facilitates the rotatable installation of the reaction tank assembly 20. The bearing seat bracket 121 is used to support the bearing seat 122 to a certain height so that after the two ends of the reaction tank assembly 20 are installed on the bearing seat 122 through the reaction tank shaft 123, it can be placed at a certain height, close to the stirring device 30 and the solubilizing feed device 40. Since the reaction tank shaft 123 is rotatable, it can drive the reaction tank assembly 20 to rotate, so as to achieve the tilted / upright placement of the reaction tank assembly 20.

[0040] In a preferred embodiment of the present invention, the reaction vessel assembly 20 includes a reaction vessel 210 and a reaction vessel bracket 220. The reaction vessel bracket 220 has lifting lugs 221 protruding upward at both ends along the longitudinal direction. The two lifting lugs 221 are respectively connected to the two reaction vessel shafts 123. The reaction vessel 210 is connected to the reaction vessel bracket 220.

[0041] It should be noted that the reaction vessel 210 has an opening at the top and contains the reaction space 211 inside. The reaction vessel bracket 220 is used for the installation and connection of the reaction vessel 210. It is connected to the reaction vessel shaft 123 by means of lifting lugs 221 formed at both ends. The reaction vessel 210 can be installed on the reaction vessel bracket 220 by means of locking pins, which makes it easy to install and disassemble.

[0042] In a preferred embodiment of this utility model, the stirring device 30 includes a stirring drive motor 310, a stirring coupling 320, a lifting platform 330, a stirring bearing seat 340, a stirring shaft 350, and a stirring paddle 360. The lifting platform 330 is connected to the top inner side of the support 70, and the driving end of the lifting platform 330 is vertically retractable. The stirring bearing seat 340 is connected to the driving end of the lifting platform 330. The stirring paddle 360 ​​is connected to the bottom end of the stirring shaft 350. The stirring shaft 350 is rotatably connected to the stirring bearing seat 340, and its top end extends out of the stirring bearing seat 340. The driving end of the stirring drive motor 310 is connected to the stirring shaft 350 through the stirring coupling 320.

[0043] It is worth noting that the stirring drive motor 310 is used to drive the stirring shaft 350 to rotate, thereby driving the stirring paddle 360 ​​to rotate to achieve the stirring purpose. The stirring coupling 320 is used to improve the coaxiality and stability of the connection with the stirring shaft 350. The lifting mechanism 330 is used to change the vertical position of the stirring paddle 360, and it can be a hydraulic cylinder. Since the stirring shaft 350 is rotatably mounted in the stirring bearing seat 340, the stirring shaft 350 and the stirring bearing seat 340 form a stirring shaft assembly. When the drive end of the lifting mechanism 330 moves vertically up and down, it drives the stirring shaft assembly, stirring coupling 320, stirring drive motor 310, and stirring paddle 360 ​​to move up and down together. Please refer to the appendix for details. Figure 2 .

[0044] As a preferred embodiment of the present invention, it further includes a replacement platform 710, which is connected to the support 70 and is disposed near the upper part of the reaction vessel assembly 20. The replacement platform 710 has a channel through which the stirring paddle 360 ​​passes.

[0045] It is worth noting that the replacement platform 710 is used to replace the agitator 360 after it has been used for a certain period of time and is connected to the bracket 70 near the upper part of the reaction vessel assembly 20, that is, below the agitator 360 when the elevator 330 is in its initial state (not retracted downwards), to facilitate replacement. To avoid obstructing the vertical movement of the agitator 360, a channel needs to be formed on the replacement platform 710 for the agitator 360 to pass through. Please refer to the appendix for details. Figure 2 .

[0046] Furthermore, the bottom of the replacement platform 710 is coated with an insulation layer 720.

[0047] It should be noted that the insulation layer 720 is used to reduce the heat radiation of the steel slag, maintain the molten state of the steel slag, and facilitate stirring and mixing. Therefore, it is set at the bottom of the replacement platform 710, close to the reaction tank 210.

[0048] Furthermore, the fluxing and feeding device 40 includes a fluxing tank 410, a feeder 420, and a chute 430. The fluxing tank 410 is connected to the support 70, the feeder 420 is connected to the discharge end of the fluxing tank 410, one end of the chute 430 is connected to the feeder 420, and the other end of the chute 430 passes through and extends out of the replacement platform 710 for the fluxing to flow into the reaction space 211.

[0049] It should be understood that the cosolvent tank 410 is used to store cosolvents and is connected to the support 70 to be set together with the stirring device 30. In this way, when the running trolley 110 runs to this position, the cosolvent can be added and stirred at the same time. The feeder 420 is connected to the discharge end of the cosolvent tank 410. After receiving the cosolvent, it delivers it to the reaction space 211 through the chute 430 in a timed and quantitative manner according to a preset amount. The feeder 420 is a device well known to those skilled in the art, so it will not be described in detail here.

[0050] Furthermore, the slag removal device 50 includes a slag removal machine support base 510 and a slag removal machine 520. The slag removal machine support base 510 is connected to the frame and is located on one side of the trolley track 60 along the lateral direction. The slag removal machine 520 is connected to the slag removal machine support base 510.

[0051] It should be noted that the slag remover support base 510 is used to support the slag remover 520 to a certain height so that the height of the slag remover 520 matches that of the reaction tank 210. Thus, after the reaction tank 210 is tilted toward the slag remover 520, the slag remover 520 is started to remove the phosphorus-rich steel slag. It is understood that the slag remover 520 is also a device well known to those skilled in the art, so it will not be described in detail here.

[0052] Furthermore, it also includes a guide plate 111 and a waste slag bin 530. The guide plate 111 is connected to the running trolley 110 and is spaced apart on the side of the reaction tank assembly 20 near the slag removal device 50. The cross-section of the guide plate 111 is a right-angled triangle shape, including a high end and a low end. The waste slag bin 530 is connected to the frame, and the low end extends out of the running trolley 110 to guide phosphorus-rich steel slag into the waste slag bin 530.

[0053] It should be noted that the guide plate 111 is used to guide the excavated phosphorus-rich steel slag. Its cross-section is a right-angled triangle with an inclined surface. The characteristic of the inclined surface allows the phosphorus-rich steel slag to be received from its high end and then flow into the waste slag bin 530 through the low end for collection. Therefore, the low end is set to extend out of the running trolley 110 so that when the running trolley 110 runs to this position, the extended low end is located at the top of the waste slag bin 530, preventing the phosphorus-rich steel slag from falling outside.

[0054] Furthermore, the trolley device 10 also includes a drive support 130, a reaction tank coupling 140, and a reaction tank drive mechanism 150. The drive support 130 is connected to the trolley 110, and the reaction tank drive mechanism 150 is connected to the drive support 130. The drive end of the reaction tank drive mechanism 150 is connected to the reaction tank shaft 123 through the reaction tank coupling 140.

[0055] It is understood that the drive support 130 is used to install and support the reaction tank drive mechanism 150 to a certain height, so as to facilitate the connection between the reaction tank drive mechanism 150 and the reaction tank shaft 123. Under the action of the reaction tank coupling 140, the coaxiality and connection stability are improved. It is worth mentioning that the reaction tank drive mechanism 150 can adopt the form of a drive motor and a geared motor working together, which can improve the power performance and rotational stability when rotating the reaction tank 210, reasonably distribute the power, and avoid excessive tilting of the reaction tank 210.

[0056] To facilitate understanding by those skilled in the art, the operational process of this application is briefly described as follows:

[0057] First, converter slag is poured into reaction vessel 210. Reaction vessel 210 is then lifted onto reaction vessel support 220 and locked with locking pins. The trolley 110 is started to move along trolley track 60 to below the stirring device 30. The elevator 330 is started to extend the stirring paddle 360 ​​into the slag in reaction vessel 210. The feeder 420 is started to add flux to reaction vessel 210. The stirring drive motor 310 is started to rotate the stirring paddle 360, thereby mixing the slag and flux to achieve the separation of phosphorus-rich and iron-rich slag. After mixing is complete, the elevator 330 is started to raise the stirring paddle 360. Once above the reaction tank 210, the trolley 110 is started to run along the trolley track 60 to one side of the slag remover 520. The reaction tank drive mechanism 150 is started to rotate the reaction tank 210 toward the slag remover 520 to tilt it at a certain angle. The slag remover 520 is then started to remove the upper layer of phosphorus-rich steel slag separated from the reaction tank 210. After being guided by the guide plate 111, the slag falls into the waste slag bin 530. The reaction tank drive mechanism 150 is then started to flip the reaction tank 210 back to its initial position. The locking pin is removed, and the reaction tank 210 is lifted to pour the iron-rich steel slag into the converter for recycling. The trolley 110 is then started to return to the starting position for the next batch of steel slag processing.

[0058] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A steel slag dephosphorization treatment system, characterized in that, This includes a trolley system, reaction vessel components, a stirring device, a solubilizing feeder, and a slag removal device; among which, The running trolley device is movably connected to the trolley track along the longitudinal direction, the reaction tank assembly is connected to the running trolley device, the reaction tank assembly has a reaction space inside, and the reaction tank assembly is rotatably arranged around its own longitudinal axis. The stirring device is connected to the support and spaced above the reaction vessel assembly. The stirring device is vertically retractable and rotatable about its own vertical axis. The solubilizing feeder is connected to the support and located on one side of the stirring device in the lateral direction. The solubilizing feeder has a discharge end for the solubilizing solvent to flow into the reaction space. The slag removal device is used to remove phosphorus-rich steel slag from the reaction space. It is set on one side of the trolley track along the lateral direction and spaced apart at the front end of the stirring device.

2. The steel slag dephosphorization treatment system according to claim 1, characterized in that, The operating trolley device includes an operating trolley and two bearing units arranged longitudinally opposite each other. Each bearing unit includes a bearing housing bracket, a bearing housing, and a reaction vessel shaft. The running trolley is movably connected to the trolley track along the longitudinal direction. The bearing seat bracket is connected to the running trolley. The bearing seat is connected to the top of the bearing seat bracket. The reaction vessel shaft is rotatably connected to the bearing seat. The two ends of the reaction vessel assembly are respectively connected to the two reaction vessel shafts.

3. The steel slag dephosphorization treatment system according to claim 2, characterized in that, The reaction vessel assembly includes a reaction vessel and a reaction vessel bracket. The reaction vessel bracket has lifting lugs protruding upwards at both ends along the longitudinal direction. The two lifting lugs are respectively connected to the two rotating shafts of the reaction vessel. The reaction vessel is connected to the reaction vessel bracket.

4. The steel slag dephosphorization treatment system according to claim 1, characterized in that, The stirring device includes a stirring drive motor, a stirring coupling, a lifting platform, a stirring bearing housing, a stirring shaft, and a stirring paddle. The lifting platform is connected to the top inner side of the support frame, and the driving end of the lifting platform is vertically retractable. The stirring bearing housing is connected to the driving end of the lifting platform. The stirring paddle is connected to the bottom end of the stirring shaft. The stirring shaft is rotatably connected to the stirring bearing housing, and its top end extends out of the stirring bearing housing. The driving end of the stirring drive motor is connected to the stirring shaft through the stirring coupling.

5. The steel slag dephosphorization treatment system according to claim 4, characterized in that, It also includes a replacement platform, which is connected to the support and is located above the reaction vessel assembly. The replacement platform has a channel through which the stirring paddle passes.

6. The steel slag dephosphorization treatment system according to claim 5, characterized in that, The bottom of the replacement platform is coated with an insulation layer.

7. The steel slag dephosphorization treatment system according to claim 5, characterized in that, The fluxing and feeding device includes a fluxing tank, a feeder, and a chute. The fluxing tank is connected to a support, the feeder is connected to the discharge end of the fluxing tank, one end of the chute is connected to the feeder, and the other end of the chute passes through and extends out of the replacement platform to allow the fluxing agent to flow into the reaction space.

8. The steel slag dephosphorization treatment system according to claim 1, characterized in that, The slag removal device includes a slag removal machine support base and a slag removal machine. The slag removal machine support base is connected to the frame and is set on one side of the trolley track along the lateral direction. The slag removal machine is connected to the slag removal machine support base.

9. The steel slag dephosphorization treatment system according to claim 2, characterized in that, It also includes a guide plate and a waste slag bin. The guide plate is connected to the running trolley and is spaced apart on the side of the reaction tank assembly near the slag removal device. The cross-section of the guide plate is a right-angled triangle shape, including a high end and a low end. The waste slag bin is connected to the frame, and the low end extends out of the running trolley to guide the phosphorus-rich steel slag into the waste slag bin.

10. The steel slag dephosphorization treatment system according to claim 2, characterized in that, The trolley device further includes a drive support, a reaction tank coupling, and a reaction tank drive mechanism. The drive support is connected to the trolley, and the reaction tank drive mechanism is connected to the drive support. The drive end of the reaction tank drive mechanism is connected to the reaction tank shaft through the reaction tank coupling.

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