Submerged arc furnace operation system and operation method

Abstract

The invention relates to the technical field of submerged arc furnaces, and provides a submerged arc furnace operation system and method. The submerged arc furnace operation system comprises a monitoring system for collecting operation site environment information and identified abnormal point information; the charge level maintenance system is used for carrying out maintenance operation; the control system is used for receiving the abnormal point information of the monitoring system, performing analysis based on a temperature value in the abnormal point information, and sending a control signal to the charge level maintenance system based on an analysis result; and the man-machine operation system is used for collecting a control command of an operator and transmitting the control command to the control system. According to the submerged arc furnace operation system, the problems that in the prior art, large personnel injury risks exist in maintenance of the charge level in the submerged arc furnace, and the charge level maintenance effect is poor can be solved.

Description

Technical Field

[0001] This application relates to the field of electric arc furnace technology, and in particular to an electric arc furnace operating system and operating method. Background Technology

[0002] Safety risks are prominent during the maintenance of the charge level inside existing submerged arc furnaces. Operators driving tamping trolleys or modified forklifts face multiple risk of injury when performing tasks such as spreading, leveling, pushing, and tamping at close range near the furnace door. Furthermore, conventional work vehicles have limited visibility, preventing operators from being aware of changes in their surroundings while focused on charge level maintenance. Additionally, the pusher arm of the work vehicle poses a risk of accidentally injuring nearby personnel when entering or exiting the furnace.

[0003] In terms of furnace condition monitoring, the existing methods are significantly lagging behind. Abnormalities in the material surface are usually detected late, requiring a period of time after the abnormality appears and exhibits obvious abnormalities such as flame spikes before they can be noticed. Furthermore, the acquisition of furnace condition information relies entirely on operators observing by opening the furnace door, lacking more timely monitoring methods.

[0004] The existing furnace tamping tools are relatively difficult to operate, placing high demands on the experience of the operators. Inexperienced personnel struggle to accurately assess the furnace conditions, making it difficult not only to master the tools but also to perform subsequent furnace maintenance. Furthermore, inconsistencies in operators' experience and methods lead to variations in their understanding of the material surface conditions, resulting in inconsistent overall material surface maintenance levels. This inconsistency ultimately causes uneven output per furnace, impacting production stability. Summary of the Invention

[0005] This application provides an electric arc furnace operation system to solve the problems of high personnel injury risk and poor maintenance effect in the maintenance of the material surface inside the electric arc furnace in the prior art.

[0006] This application also provides a method for operating a submerged arc furnace. According to a first aspect of this application, a submerged arc furnace operating system includes: The monitoring system collects information about the work site environment and identifies any anomalies. Material surface maintenance system, used for maintenance operations; The control system receives abnormal point information from the monitoring system, analyzes the temperature value in the abnormal point information, and sends a control signal to the material surface maintenance system based on the analysis results. The human-machine operating system collects the operator's control commands and transmits them to the control system.

[0007] According to one embodiment of this application, the material surface maintenance system includes: a communication and control unit, a traveling mechanism, a slewing mechanism, and a working mechanism. The communication and control unit adjusts the traveling position, slewing angle, and action posture of the working mechanism through the traveling mechanism and the slewing mechanism.

[0008] According to one embodiment of this application, the human-machine operating system includes: Central control console; A central control console base for mounting the central control console; An electric control handle, used by the operator to apply control actions; Seat assembly, used to support the operator.

[0009] According to one embodiment of this application, the monitoring system is further configured to transmit video signals and alarm signals to the human-machine operating system to assist the operator in making judgments.

[0010] According to a second aspect of the present application, a method for operating a submerged arc furnace includes: Receive environmental information about the current material level inside the furnace from the environmental sensing and recognition equipment; Identify the acquired environmental information; Obtain the accurate temperature of anomalies contained in the environmental information; The analysis is based on the preset minimum safe temperature value, maximum safe temperature value, and the acquired abnormal temperature information to determine the appropriate operating mode. Control the operating mechanism to perform material surface maintenance work; The system analyzes the preset threshold temperature and the acquired abnormal temperature information to determine the appropriate operation configuration. Complete the task; It receives real-time temperature monitoring information from environmental sensing and identification devices to determine whether the temperature at abnormal points is within a safe range.

[0011] According to one embodiment of this application, the step of analyzing the preset minimum safe temperature value, maximum safe temperature value, and acquired abnormal point temperature information to determine the appropriate operating mode includes: Based on the fact that the temperature of the abnormal point is less than the preset minimum safe temperature value, the first operation mode is adopted, which is the tamping operation mode. Based on the fact that the temperature at the abnormal point is greater than the preset maximum safe temperature value, the second operating mode is adopted, which is the material pushing operation mode.

[0012] According to one embodiment of this application, the compaction operation mode includes: Use the first attachment to maintain the abnormal point location. Use the first attachment to break up the cavity at the low temperature abnormal point and push the surrounding raw material to the abnormal point to keep the material surface flat and in a continuous smoldering state. The material pushing operation mode includes: Use the second attachment to maintain the location of the abnormal point. Use the second attachment to push the cold material around the abnormal point towards the abnormal point, cover the high temperature abnormal point, and maintain the smoldering state of the material surface in the furnace.

[0013] According to one embodiment of this application, the step of analyzing the preset threshold temperature and the acquired abnormal point temperature information to determine the appropriate job configuration includes: Based on the fact that the temperature of the obtained anomaly point is greater than or equal to the first threshold temperature, the first job configuration is adopted; Based on the fact that the temperature of the obtained anomaly point is less than the first threshold temperature and greater than or equal to the second threshold temperature, the second job configuration is adopted; Based on the fact that the temperature of the obtained anomaly point is less than the second threshold temperature, the third job configuration is adopted; Based on the fact that the temperature of the obtained anomaly point is less than or equal to the third threshold temperature, the fourth job configuration is adopted; Based on the fact that the temperature of the obtained anomaly point is greater than the third threshold temperature and less than or equal to the fourth threshold temperature, the fifth job configuration is adopted; Based on the fact that the temperature of the obtained anomaly point is greater than the fourth threshold temperature, the sixth job configuration is adopted; Second threshold temperature < First threshold temperature < Minimum safe temperature < Maximum safe temperature < Third threshold temperature < Fourth threshold temperature.

[0014] According to one embodiment of this application, the first operation configuration includes: controlling the material surface maintenance system to perform a first amplitude of furnace tamping, the operation depth being a first depth, and the number of operations being the first number; The second operation configuration includes: controlling the material surface maintenance system to perform a second-amplitude tamping operation, with the operation depth being the second depth and the number of operations being the second number; The third operation configuration includes: controlling the material surface maintenance system to perform a third-amplitude tamping operation, with the operation depth being the third depth and the number of operations being the third number; Among them, the first amplitude < the second amplitude < the third amplitude, the first depth < the second depth < the third depth, and the first number < the second number < the third number; The fourth operation configuration includes: controlling the material surface maintenance system to push the material at a fourth amplitude, with an operation depth of a fourth depth and an operation count of a fourth count; The fifth operation configuration includes: controlling the material surface maintenance system to push the material at a fifth amplitude, with an operation depth of a fifth depth and an operation count of a fifth count; The sixth operation configuration includes: controlling the material surface maintenance system to push the material at a sixth amplitude, with an operation depth of a sixth depth and an operation count of a sixth count; Among them, the fourth amplitude < the fifth amplitude < the sixth amplitude, the fourth depth < the fifth depth < the sixth depth, and the fourth number of times < the fifth number of times < the sixth number of times.

[0015] According to one embodiment of this application, the identification of the acquired environmental information includes: The accurate location of the abnormal point inside the furnace is obtained through analysis, which is used by the subsequent control system to guide the movement of the walking mechanism, rotating mechanism and working mechanism of the material surface maintenance system.

[0016] The above-described one or more technical solutions in the embodiments of this application have at least one of the following technical effects: The electric arc furnace operation system of this application, after the monitoring system identifies an anomaly point inside the furnace, the material surface maintenance system moves to the corresponding work position based on the location information of the anomaly point reported by the monitoring system. Based on the anomaly point identification characteristics, the material surface maintenance system can autonomously determine the operation mode and automatically perform material surface maintenance on the anomaly point inside the furnace, achieving unmanned autonomous operation of material surface maintenance. Through the above-mentioned electric arc furnace operation system, operators are kept away from hazardous working environments, avoiding the risk of injury from working close to the electric arc furnace in the workshop, while reducing the workload of operators and saving manpower.

[0017] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the electric arc furnace operating system provided in this application. Figure 1 .

[0020] Figure 2 This is a schematic diagram of the structure of the electric arc furnace operating system provided in this application. Figure 2 .

[0021] Figure 3 This is a schematic diagram of the material surface maintenance system provided in this application.

[0022] Figure 4 This is a schematic diagram of the human-computer operating system provided in this application.

[0023] Figure 5 This is a flowchart illustrating the operation method of the electric arc furnace provided in this application. Figure 1 .

[0024] Figure 6 This is a flowchart illustrating the operation method of the electric arc furnace provided in this application. Figure 2 .

[0025] Figure label: 1. Monitoring system; 11. Environmental sensing and recognition equipment; 2. Material surface maintenance system; 21. Traveling mechanism; 22. Rotating mechanism; 23. Working mechanism; 24. Power supply mechanism; 25. Electrical control cabinet; 26. Attachment wearing buckle; 3. Control system; 4. Human-machine operating system; 41. Central control console; 42. Central control console base; 43. Left electric control handle; 44. Left armrest box assembly; 45. Seat support; 46. Right electric control handle; 47. Armrest box mounting plate; 48. Seat mounting plate; 49. Seat assembly; 410. Right armrest box assembly; 51. Traveling track; 52. Power supply sliding contact line; 53. Left electric arc furnace; 54. Left attachment rack; 55. Right attachment rack; 56. Right electric arc furnace. Detailed Implementation

[0026] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but should not be used to limit the scope of this application.

[0027] In the description of the embodiments of this application, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0029] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0031] Abnormal furnace conditions on the charge surface inside an electric arc furnace are mainly divided into two types: "sparking" and "charge surface caking." For "sparking": In this condition, a collapse point appears on the charge surface inside the furnace. The heat accumulated inside is ejected outward from the collapse point in the form of a high-temperature flame; this phenomenon is called "sparking." Sparking directly causes heat loss inside the electric arc furnace, thus reducing its operating efficiency. Its typical characteristic is that the temperature of the sparking point is higher than the temperature of the surrounding charge surface. For "charge surface caking": Taking an industrial silicon furnace as an example, in this condition, impurities affect the charge surface, causing the slag to fail to melt into silicon and sink after firing. Instead, it sinterstens at the charge surface, forming a shell-like structure. As the charge below the shell is gradually consumed, a cavity forms inside the charge pile. This prevents normal heat transfer within the charge pile, gradually forming a low-temperature zone, severely affecting the normal production of the electric arc furnace. Its characteristic is that the temperature at the caking point is lower than the temperature of the surrounding charge surface.

[0032] A submerged arc furnace operating system according to an embodiment of the first aspect of this application, such as Figure 1 As shown, the electric arc furnace operation system includes: a monitoring system 1, a material surface maintenance system 2, a control system 3, and a human-machine interface system 4. The monitoring system 1 collects environmental information from the work site and identifies anomalies, transmitting this information back to the control system 3. Furthermore, the monitoring system 1 can transmit video and alarm signals to the human-machine interface system 4 for operator observation and assessment. The material surface maintenance system 2 is used for maintenance operations. The control system 3 receives anomaly information from the monitoring system 1, analyzes the temperature values ​​within the anomaly information, and sends control signals to the material surface maintenance system 2 based on the analysis results. The human-machine interface system 4 collects operator commands and transmits them to the control system 3. The human-machine interface system 4 can also send control signals to the monitoring system 1 to control its monitoring angle, etc. Figure 1 In the diagram, dashed lines represent wireless transmission, and solid lines represent wired transmission.

[0033] In the operation site of the electric arc furnace, the following can be specifically set up: a walking track 51, a power supply sliding contact line 52, a left electric arc furnace 53, a left attachment rack 54, a right attachment rack 55, and a right electric arc furnace 56.

[0034] The monitoring system 1 collects real-time environmental information and alarm information from the work site and transmits it back to the human-machine interface 4. Operators can use the human-machine interface 4 to control and configure the monitoring system 1. Operators make judgments based on the environmental information transmitted from the monitoring system 1 and issue control commands to the control system 3 through the human-machine interface 4. The control system 3 then transmits the control commands to the material surface maintenance system 2 to perform corresponding operations. The status information of the material surface maintenance system 2 is reported back to the human-machine interface 4 level by level.

[0035] The electric arc furnace operation system remotely collects environmental information and anomaly information from the furnace via monitoring system 1. The material surface maintenance system 2 can autonomously move to the corresponding work position based on the location information of the anomaly, eliminating the need for operators to drive a vehicle close to the electric arc furnace. Simultaneously, the material surface maintenance system 2 can autonomously determine the operation mode based on anomaly identification features, completing unmanned material surface maintenance. This keeps operators away from hazardous work environments, avoiding the risk of injury associated with traditional manual close-range operations, and significantly improving the safety of electric arc furnace operations.

[0036] Monitoring system 1 can accurately identify abnormal points inside the furnace. After receiving the abnormal point information, control system 3 performs targeted analysis based on temperature values ​​to ensure the accuracy of judgment on different abnormal furnace conditions such as sparking (high temperature abnormality) and caking (low temperature abnormality). Material surface maintenance system 2, based on the control signals from control system 3 and its own identification of abnormal characteristics, can adapt to corresponding maintenance methods, avoiding maintenance deviations caused by traditional manual judgment based on experience. This precise "identification-analysis-maintenance" process can reduce the duration of abnormal furnace conditions—for example, reducing heat loss during sparking and mitigating the impact of the low-temperature zone formed by material surface caking on temperature transmission, thereby improving the working efficiency of the submerged arc furnace and reducing production losses caused by improper maintenance.

[0037] The autonomous operation mode significantly reduces the workload of operators, eliminating the need for continuous on-site monitoring or frequent operations such as tamping and leveling, effectively saving manpower. Simultaneously, the system's standardized "monitoring-control-maintenance" process avoids the inconsistencies in material surface maintenance levels caused by differences in operator experience and operating methods in traditional operations. This reduces the problem of inconsistent output per furnace caused by inconsistent manual operation, improving the stability of submerged arc furnace production. Furthermore, the human-machine interface 4 retains the possibility of manual intervention. Operators can transmit instructions to the control system 3 by collecting control commands, supplementing the autonomous operation with manual adjustments, balancing autonomy and flexibility, and avoiding the potential shortcomings of relying solely on automation in handling special operating conditions.

[0038] In some cases, the control system 3 may include a controller and a remote communication unit. The controller chip uses a PLC microprocessor chip, and the controller receives control commands issued by the human-machine operating system 4, as well as abnormal point signals issued by the monitoring system 1. The remote communication unit is responsible for wirelessly transmitting the control commands issued by the controller to the material surface maintenance system 2, and receiving the status information returned by the material surface maintenance system 2 and simultaneously transmitting it back to the human-machine operating system 4 level by level. Based on the control commands issued by the human-machine operating system 4 and the abnormal point signals identified by the monitoring system 1, the control system 3 issues corresponding action commands to control the material surface maintenance system 2 to complete the operation.

[0039] The monitoring system 1 may include multiple environmental sensing and identification devices 11 around the electric arc furnace and an information processing host. The environmental sensing and identification devices 11 may be a combination of an infrared thermal imager or a visible light camera and a thermometer, or other sensing devices such as millimeter-wave radar and ultrasonic sensors. The environmental sensing and identification devices 11 can transmit the acquired environmental information back to the information processing host. The information processing host is an industrial computer equipped with the software for the environmental sensing and identification devices 11, image recognition algorithms, and position coordinate algorithms. It can identify and issue alarms based on the images, position, and temperature information transmitted back by the environmental sensing and identification devices 11, and output the judgment signals to the controller.

[0040] According to one embodiment of this application, such as Figure 3 As shown, the material surface maintenance system 2 includes: a communication and control unit, a traveling mechanism 21, a slewing mechanism 22, and a working mechanism 23. The communication and control unit adjusts the traveling position, slewing angle, and action posture of the working mechanism 23 through the traveling mechanism 21 and the slewing mechanism 22.

[0041] The coordinated setup of the traveling mechanism 21 and the slewing mechanism 22 in the material surface maintenance system 2 enables dual position calibration under the control of the communication and control unit: the traveling mechanism 21 is responsible for driving the working mechanism 23 to move within the work site area, ensuring that the working mechanism 23 can accurately reach the corresponding position of the abnormal point identified by the monitoring system 1; the slewing mechanism 22 can further adjust the slewing angle of the working mechanism 23, so that the working mechanism 23 can adjust the working orientation for different directions of the abnormal point (such as the ignition point and caking area in different quadrants of the furnace), avoiding incomplete maintenance due to angle deviation, and significantly improving the positional accuracy of material surface maintenance.

[0042] The communication and control unit can simultaneously optimize the movement posture of the working mechanism 23 by integrating the position adjustment signal of the walking mechanism 21 and the angle adjustment signal of the slewing mechanism 22.

[0043] As a unified control hub, the communication and control unit can centrally process the signal interactions of the traveling mechanism 21, the slewing mechanism 22, and the working mechanism 23. For example, when the working mechanism 23 performs maintenance actions, the communication and control unit can synchronously coordinate the traveling mechanism 21 to stop moving and the slewing mechanism 22 to lock its angle.

[0044] The communication and control unit can be a remote communication unit and a motion control unit set separately. The remote communication unit can wirelessly receive control commands issued by the controller and transmit the status information of the material surface maintenance system 2 back to the controller in real time. The motion control unit is responsible for precisely controlling the walking position, rotation angle and action posture of the walking mechanism 21, the rotating mechanism 22 and the working mechanism 23.

[0045] like Figure 3As shown, the material surface maintenance system 2 also includes a power supply mechanism 24, an electrical control cabinet 25, and an attachment wearing buckle 26.

[0046] According to one embodiment of this application, such as Figure 4 As shown, the human-machine operating system 4 includes: a central control console 41, a central control console base 42, an electric control handle, and a seat assembly 49; wherein, the central control console base 42 is used to mount the central control console 41; the electric control handle is used by the operator to apply control actions; and the seat assembly 49 is used to support the operator. The electric control handle includes a left electric control handle 43 and a right electric control handle 46. The human-machine operating system 4 may also include a left armrest box assembly 44, a seat support 45, an armrest box mounting plate 47, a seat mounting plate 48, and a right armrest box assembly 410.

[0047] The human-machine interface 4 is fixedly mounted on the central control console 41 via the central control console base 42, stabilizing the control interface in an area easily accessible to the operator. The electric control handle, as a dedicated control component, allows the operator to quickly output control commands by directly applying actions (such as pushing, pulling, or rotating), eliminating the need for complex button combinations or parameter inputs and reducing the number of steps in command transmission. The combination of a "fixed console + dedicated handle" centralizes command acquisition in the same operating area, facilitating the operator's simultaneous completion of the "receiving furnace status information - outputting commands - confirming feedback" process, thus improving overall operational efficiency.

[0048] The seat assembly 49 provides support for personnel who are on duty for long periods or frequently need to intervene, preventing fatigue accumulation caused by standing during operation. The central control console 41, fixed to the central control base 42, will not shift due to slight vibrations in the field (such as movement of the material surface maintenance system 2), ensuring that the position of the operating interface is fixed. Combined with the stable grip of the electric control handle, the operator can accurately control the range of motion, avoiding command errors caused by shaking of operating parts, further ensuring the accuracy of control commands, and reducing interference with the operation of the material surface maintenance system 2.

[0049] The structure of the human-machine operating system 4 is deeply adapted to the core requirement of "unmanned maintenance" of the electric arc furnace operation system. Operators can complete the collection of control commands through the system from a position away from the high temperature and fire hazard area of ​​the furnace opening, without having to come into close contact with the dangerous environment, further enhancing personnel safety protection; at the same time, the "carrying (seat) - supporting (base) - operating (operating table + handle)" link formed by various components can stably support the function of "manual intervention". When the material surface maintenance system 2 encounters special working conditions and needs to be adjusted during autonomous operation, the operator can quickly intervene through the system to ensure a seamless connection between "autonomous operation and manual intervention" and ensure the continuity of electric arc furnace production.

[0050] It should be noted that the human-machine operating system 4 may also include a signal input unit, a data processing unit, a data transceiver communication unit, and a data display unit, etc., to collect the operator's control commands and simultaneously display feedback parameters and screens to the operator, thus forming a complete human-machine interaction system. The human-machine interface on the central control console 41 can be a touch screen or physical buttons, and the form is not limited.

[0051] According to one embodiment of this application, such as Figure 1 As shown, the monitoring system 1 is also configured to transmit video signals and alarm signals to the human-machine operating system 4 to assist operators in making judgments.

[0052] The video signals transmitted by monitoring system 1 provide operators with a direct view of the furnace material level and abnormal points, avoiding the limitations of relying solely on data (such as temperature values) for abstract judgment. For example, operators can directly observe the flame intensity at the ignition point and the appearance of the caking zone through video, helping to confirm the actual severity of abnormal furnace conditions and reducing misjudgments caused by limited data. Simultaneously, alarm signals can be proactively triggered after monitoring system 1 identifies anomalies, eliminating the need for operators to continuously monitor the interface. This helps operators quickly focus on the conditions requiring intervention, improving judgment efficiency.

[0053] The video signal allows operators to observe the internal conditions of the electric arc furnace without having to approach the furnace opening, further increasing the distance from dangerous environments such as high temperatures and sparks, and enhancing personnel safety. At the same time, the clear video image can help operators remotely confirm the operating status of the material surface maintenance system 2. If maintenance deviations occur in the automated processing program, adjustment instructions can be issued in a timely manner through the human-machine operating system 4, balancing safety and maintenance effectiveness.

[0054] A method for operating a submerged arc furnace according to a second aspect of this application, such as Figure 5 As shown, the operation method of the electric arc furnace includes: Receive automatic mode switch control commands issued by the human-machine operating system 4; Determine if the current command is an automatic mode activation command; The environmental information of the current material surface inside the furnace is received by the environmental perception and recognition device 11 and used for subsequent program analysis of the characteristic information of abnormal points inside the furnace. Identify the acquired environmental information; The accurate temperature of anomalies in the environmental information is obtained and used by the subsequent control system 3 to guide the material surface maintenance system 2 in selecting the operating mode. The analysis is based on the preset minimum safe temperature value, maximum safe temperature value, and the acquired abnormal temperature information to determine the appropriate operating mode. The traveling mechanism 21 of the material surface maintenance system 2 moves to the working point; The material surface maintenance operation begins, and the control mechanism 23 executes the material surface maintenance work; The system analyzes the preset threshold temperature and the acquired abnormal temperature information to determine the appropriate operation configuration. Complete the task, including the task under the corresponding task mode and the corresponding task configuration; Receive real-time temperature monitoring information from the environmental sensing and identification device 11 and determine whether the temperature at abnormal points is within the safe range; Remove the attachments, and the material surface maintenance system 2 returns to the standby position.

[0055] In the operation method, the control system 3 first receives the automatic mode on / off command issued by the operation terminal. When the command is on, the controller performs quantitative analysis of the abnormal point based on the abnormal point signal, abnormal point location and temperature information obtained by the monitoring system 1 in real time. Based on the abnormal point information, the material surface operation mode, operation position, number of actions and depth are determined, and the analyzed parameters are sent to the material surface maintenance system 2. After receiving the command, the material surface maintenance system 2 selects the appropriate attachment according to the determined operation mode. After automatically putting on the attachment, the material surface maintenance system 2 runs along the track to the operation position. The built-in motion control unit adjusts the posture of the working mechanism 23 according to the operation information issued by the control system 3, and uses the attachment to perform fixed-point maintenance of the abnormal point. After the operation is completed, the monitoring system 1 detects that the abnormal point has disappeared. The material surface maintenance system 2 retracts the working mechanism 23, walks along the track to the attachment rack to unload the attachment and returns to the standby position.

[0056] The aforementioned submerged arc furnace operation method begins with receiving the automatic mode switch command from the human-machine interface 4 (HMI), and sequentially completes command judgment, environmental information acquisition, anomaly identification, temperature analysis, operation mode selection, movement positioning, maintenance execution, operation configuration adjustment, result verification, and system reset, forming a fully automated operation chain. The entire process requires no continuous human intervention; only a start command issued by the control system 3 is needed to achieve autonomous operation of the material surface maintenance. Simultaneously, the automated process avoids risks such as "distraction and fatigue-related misjudgments" inherent in manual operation, ensuring that each maintenance operation follows standardized procedures, reducing inconsistencies in maintenance results caused by differences in human operation, and improving overall operational consistency.

[0057] The process uses "temperature information" as the core judgment criterion. It completes the decision in two stages using preset minimum and maximum safe temperature values ​​and multiple threshold temperatures: The first stage determines the operating mode based on the safe temperature range, accurately matching the maintenance needs of the furnace condition (temperature above the maximum safe temperature) and the material surface caking condition (temperature below the minimum safe temperature), avoiding "mode mismatch" caused by manual judgment of anomaly types based solely on vision or experience (e.g., using a flat material mode to handle caking); the second stage determines the operating configuration based on preset threshold temperatures, further refining the maintenance intensity (e.g., a strong pushing configuration for high-temperature flaring, a strong crushing configuration for low-temperature caking), solving the problem of "adjusting maintenance intensity by feel" in traditional manual operations. Simultaneously, the process incorporates "environmental information acquired by environmental sensing and recognition device 11" as auxiliary analysis, supplementing the material surface state (e.g., collapse range, caking area) beyond temperature, making the selection of operating modes and configurations more closely aligned with actual furnace conditions and improving the accuracy of maintenance decisions.

[0058] The process adds a step of "receiving real-time monitoring temperature information and determining whether the temperature of abnormal points is within the safe range" after "completing the operation," forming a closed-loop control of "maintenance execution - effect verification." If the temperature of abnormal points does not reach the safe range, secondary maintenance can be implicitly triggered (such as re-judging the operation mode, adjusting the configuration, and then executing again), avoiding the "abnormal residue" problem caused by traditional manual maintenance that "relies solely on visual confirmation after the operation and cannot quantify the effect verification" (such as incomplete restoration of scorching points or incomplete removal of caking zones). Closed-loop management ensures that each maintenance effectively restores abnormal furnace conditions to a safe state, reducing heat loss and decreased production efficiency caused by incomplete maintenance, and ensuring the continuous and stable operation of the submerged arc furnace.

[0059] In fully automated mode, operators only need to monitor the entire process in real time through the human-machine interface (HMI) system (intervening when the automated mode cannot handle the task or encounters errors). There is no need for close proximity to the furnace opening for observation, driving, or operation, thus avoiding the risks of high-temperature burns and sparks encountered during close-range manual work. Simultaneously, the automated process replaces continuous manual monitoring and frequent tool adjustments, significantly reducing the labor intensity of operators and solving the problems of frequent shift work and accumulated fatigue in traditional 24-hour production scenarios. This reduces labor costs while improving the safety and comfort of personnel.

[0060] According to one embodiment of this application, such as Figure 6As shown, based on the preset minimum safe temperature value, maximum safe temperature value, and the acquired abnormal point temperature information, the analysis determines the operating mode to be adopted, including: if the acquired abnormal point temperature is less than the preset minimum safe temperature value, the first operating mode is adopted, which is the tamping operation mode; if the acquired abnormal point temperature is greater than the preset maximum safe temperature value, the second operating mode is adopted, which is the pushing operation mode.

[0061] By directly linking temperature to anomaly types and maintenance needs, a precise correspondence of "temperature characteristics - anomaly type - operating mode" is formed: when the temperature at the anomaly point is lower than the preset minimum safe temperature value, corresponding to the material surface caking condition, the first operating mode (tamping operation mode) can be used to specifically break up the caking layer and eliminate the cavities under the caking, avoiding the obstruction of temperature transmission caused by the continued caking; when the temperature at the anomaly point is higher than the preset maximum safe temperature value, corresponding to the ignition furnace condition, the second operating mode (pushing operation mode) can be used to quickly smooth the material surface collapse, block the high-temperature flame ejection, and reduce heat loss.

[0062] The method's judgment logic is based on "comparing the temperature value with the preset value." It eliminates the need for complex multi-parameter calculations or manual experience-based deduction; simply comparing the acquired abnormal temperature with two preset values ​​quickly outputs the operating mode result. This concise judgment process significantly reduces decision-making time, making it particularly suitable for scenarios requiring timely handling of abnormal furnace conditions in submerged arc furnaces. For example, if a persistent flame is generated, it can lead to rapid heat loss and reduced production efficiency. Rapid mode decision-making allows the material surface maintenance system 2 to intervene as early as possible, preventing the abnormal furnace condition from worsening, improving the timeliness of material surface maintenance, and avoiding the problem of "experienced operators making accurate judgments while novices are prone to errors" in traditional manual operations.

[0063] According to one embodiment of this application, the tamping operation mode includes: using a first attachment to maintain the abnormal point location, using the first attachment to crush the cavity of the low-temperature abnormal point, and pushing the surrounding raw material to the abnormal point to maintain the flatness of the material surface and the continuous smoldering state; the pushing operation mode includes: using a second attachment to maintain the abnormal point location, using the second attachment to push the cold material around the abnormal point to the abnormal point, covering the high-temperature abnormal point, and maintaining the smoldering state of the material surface in the furnace.

[0064] The tamping operation mode (first operation mode) uses the first attachment, whose structure (such as the tamping rod) is adapted to the "breaking" requirements of the caking condition. It can effectively break up the caking layer, eliminate the cavities under the caking, and prevent the caking from continuously hindering heat transfer. The pushing operation mode (second operation mode) uses the second attachment, whose structure (such as the pushing rod) is adapted to the "covering and leveling" requirements of the spitting fire condition. It can accurately push the surrounding cold material to the high-temperature abnormal point, block the spitting fire, reduce heat loss, and level the material surface collapse. This matching design of dedicated attachments ensures that the tool function is highly compatible with the operation target, improving maintenance efficiency.

[0065] Both operating modes are designed to address the core issues of abnormal furnace conditions: In the tamping mode, "breaking up cavities" directly eliminates the key hidden danger of caking (cavities prevent heat transfer), and "pushing surrounding raw material to the abnormal point" fills the space after tamping and restores the integrity of the material surface. Meanwhile, "maintaining a flat material surface and a continuous smoldering state" prevents the formation of new caking. In the pushing mode, "pushing cold material around the abnormal point towards the abnormal point" quickly covers the high-temperature ignition point with cold material and suppresses flame jetting. "Maintaining a smoldering state of the material surface inside the furnace" reduces additional heat loss and maintains a normal temperature field inside the furnace. This targeted operating mode ensures that maintenance actions are precisely applied to the core of the abnormality, improving the thoroughness of maintenance.

[0066] Regardless of operator experience, the first tool must be used during the tamping operation, following the sequence of "crushing cavities - pushing raw material - ensuring flatness." The second tool must be used during the pushing operation, following the sequence of "pushing cold material - covering high-temperature points - ensuring smoldering." This standardized process avoids the problem of "experienced operators performing standardized actions while novices perform chaotic actions" inherent in traditional manual operations. It ensures that when different personnel handle the same anomaly at different times, the operating procedures and core actions remain consistent, reducing the instability in maintenance results caused by operational differences (e.g., in the same caking condition, sometimes the material is completely broken up, and sometimes small cavities remain), indirectly guaranteeing the stability of the submerged arc furnace production.

[0067] According to one embodiment of this application, analysis is performed based on a preset threshold temperature and acquired abnormal point temperature information to determine the appropriate operation configuration, including: adopting a first operation configuration based on the acquired abnormal point temperature being greater than or equal to a first threshold temperature; adopting a second operation configuration based on the acquired abnormal point temperature being less than the first threshold temperature but greater than or equal to a second threshold temperature; adopting a third operation configuration based on the acquired abnormal point temperature being less than the second threshold temperature; adopting a fourth operation configuration based on the acquired abnormal point temperature being less than or equal to a third threshold temperature; adopting a fifth operation configuration based on the acquired abnormal point temperature being greater than the third threshold temperature but less than or equal to a fourth threshold temperature; and adopting a sixth operation configuration based on the acquired abnormal point temperature being greater than the fourth threshold temperature. The second threshold temperature < the first threshold temperature < the minimum safe temperature < the maximum safe temperature < the third threshold temperature < the fourth threshold temperature.

[0068] By subdividing abnormal temperature ranges using multiple thresholds, a precise correspondence between "abnormality severity" and "operational configuration" is established: In the low-temperature abnormal range (below the preset minimum safe temperature value), the system is divided into three sub-ranges based on the first and second threshold temperatures, corresponding to the first, second, and third operation configurations, respectively. For example, when the abnormal temperature is close to the minimum safe temperature value (between the first and second threshold temperatures), it corresponds to mild caking, and the weaker first operation configuration can be used; when the temperature is far below the minimum safe temperature value (below the second threshold temperature), it corresponds to severe caking, and the stronger third operation configuration can be used. In the high-temperature abnormal range (above the preset maximum safe temperature value), the system is divided into three sub-ranges based on the third and fourth threshold temperatures, corresponding to the fourth, fifth, and sixth operation configurations, respectively. For example, when the abnormal temperature is close to the maximum safe temperature value (between the maximum safe temperature value and the third threshold temperature), it corresponds to mild scorching, and the fourth operation configuration with a smaller coverage area is used; when the temperature is far above the maximum safe temperature value (above the fourth threshold temperature), it corresponds to severe scorching, and the sixth operation configuration with a larger coverage area and stronger intensity is used. This multi-zone subdivision design avoids the problem of "over-maintenance for minor anomalies and under-maintenance for severe anomalies" caused by the traditional "single configuration to deal with all anomalies of the same type" (for example, using the same configuration to deal with minor and severe caking, the former is easy to damage the normal material surface, while the latter cannot be completely eliminated), ensuring that the operation configuration is highly consistent with the severity of the anomaly and improving the accuracy of maintenance.

[0069] By covering different severity levels of two types of anomalies with six operation configurations, this represents a refined upgrade in maintenance strategy compared to the crude approach of "only two operation modes." Each operation configuration can correspond to different operating parameters (such as tamping force, pushing speed, and attachment movement frequency). For example, the third operation configuration (severe caking) can be set with a higher tamping frequency and force, while the sixth operation configuration (severe scorching) can be set with a faster pushing speed and a wider pushing range. This refined decision-making solves the problem of "adjusting maintenance intensity by feel" in traditional manual operations (e.g., sometimes pushing too slowly when dealing with scorching leads to excessive heat loss, and sometimes pushing too fast leads to uneven material surfaces). It allows the intensity and range of maintenance operations to accurately match the anomaly requirements, reducing resource waste (e.g., mild anomalies do not require high-intensity operations that consume excessive energy), while improving the stability of maintenance results.

[0070] By using a fixed temperature threshold as a unified criterion, the corresponding rules for "temperature range - job configuration" are clearly defined, forming a standardized decision-making process. This standardized process ensures that consistent job configurations are selected for anomalies with the same temperature characteristics in different scenarios, reducing fluctuations in maintenance effectiveness caused by differences in decision-making and improving operational feasibility.

[0071] According to one embodiment of this application, the first operation configuration includes: controlling the material surface maintenance system 2 to perform a first amplitude of tamping, with an operation depth of the first depth and an operation count of the first time; the second operation configuration includes: controlling the material surface maintenance system 2 to perform a second amplitude of tamping, with an operation depth of the second depth and an operation count of the second time; the third operation configuration includes: controlling the material surface maintenance system 2 to perform a third amplitude of tamping, with an operation depth of the third depth and an operation count of the third time; wherein, the first amplitude < the second amplitude < the third amplitude, the first depth < the second depth < the third depth, and the first time count < the second time count < the third time count; the fourth operation configuration includes: controlling the material surface maintenance system 2 to perform a fourth amplitude of pushing, with an operation depth of the fourth depth and an operation count of the fourth time; the fifth operation configuration includes: controlling the material surface maintenance system 2 to perform a fifth amplitude of pushing, with an operation depth of the fifth depth and an operation count of the fifth time; the sixth operation configuration includes: controlling the material surface maintenance system 2 to perform a sixth amplitude of pushing, with an operation depth of the sixth depth and an operation count of the sixth time; wherein, the fourth amplitude < the fifth amplitude < the sixth amplitude, the fourth depth < the fifth depth < the sixth depth, and the fourth time count < the fifth time count < the sixth time count.

[0072] Through an incremental design of three core parameters—amplitude, depth, and number of times—precise maintenance efforts are provided for abnormal furnace conditions of varying severity: For caking conditions, mild anomalies (corresponding to the first operating configuration) employ small-amplitude, shallow-depth, and infrequent tamping operations to break up mild caking while avoiding excessive damage to the surrounding normal material surface; moderate anomalies (corresponding to the second operating configuration) increase parameter intensity to effectively handle thicker caking; severe anomalies (corresponding to the third operating configuration) operate with maximum parameters to completely break up the hard caking layer and eliminate deep cavities. For sparking conditions, mild anomalies (corresponding to the fourth operating configuration) use small-amplitude, shallow-depth, and infrequent pushing of material to cover a small area of ​​sparking points and reduce material surface disturbance; moderate anomalies (corresponding to the fifth operating configuration) increase parameters to cover a larger sparking area; severe anomalies (corresponding to the sixth operating configuration) push material with maximum parameters to quickly smooth out large-area collapses and block strong sparking jets.

[0073] The above steps configure clear and fixed "amplitude, depth, and number of times" parameters for each operation, forming a standardized operation template to ensure consistent parameters and controllable actions for each maintenance operation. Simultaneously, fixed parameters facilitate automated execution by the material surface maintenance system 2, eliminating the need for real-time manual intervention to adjust parameters, further supporting unmanned operation modes, reducing manual labor intensity, and mitigating the risks associated with close-range manual operations.

[0074] Standardized parameters ensure consistent maintenance results under the same abnormal operating conditions. For example, when dealing with "caking requiring a second operation" at different times, the same amplitude, depth, and number of tamping operations are used, preventing situations where "one maintenance is thorough while another leaves residual caking." Similarly, when dealing with "flaming requiring a fifth operation," the same pushing parameters are used, preventing fluctuations such as "less heat loss in one operation and more in another." The stability of maintenance results directly reduces the probability of recurring abnormal furnace conditions, avoiding "caking recurrence and repeated flaming" caused by incomplete maintenance. This, in turn, ensures a stable temperature field within the submerged arc furnace, prevents heat loss, maintains normal production rhythm, and indirectly improves the working efficiency and output stability of the submerged arc furnace.

[0075] According to one embodiment of this application, the acquired environmental information is identified, including: parsing to obtain the accurate location of the abnormal point inside the furnace, which is used by the subsequent control system 3 to guide the movement of the walking mechanism 21, the slewing mechanism 22 and the working mechanism 23 of the material surface maintenance system 2.

[0076] By analyzing the precise location of the abnormal point inside the furnace, the control system 3 can issue precise motion commands to the three major mechanisms of the material surface maintenance system 2: the traveling mechanism 21 can move directly to the furnace-outside working area corresponding to the abnormal point based on the precise location; the slewing mechanism 22 can adjust the slewing angle of the working mechanism 23 based on the precise location to ensure that the working mechanism 23 (such as the first attachment and the second attachment) is directly facing the abnormal point; the working mechanism 23 can adjust the amplitude of its movements according to the precise location to ensure that the maintenance actions are precisely applied to the abnormal area; ensuring that the movements of the three major mechanisms are highly consistent with the location of the abnormal point, thereby improving the accuracy of the operation.

[0077] Accurate anomaly point locations provide a unified reference benchmark for the coordinated actions of the traveling mechanism 21, the slewing mechanism 22, and the working mechanism 23. The control system 3 can synchronously plan the motion sequence of the three mechanisms based on the same position information (e.g., the traveling mechanism 21 arrives at its position first → the slewing mechanism 22 adjusts its angle then → the working mechanism 23 moves last), thereby improving coordination efficiency.

[0078] The electric arc furnace operation method provided in this application is applied to the maintenance of the charge surface in electric arc furnaces. It utilizes an in-furnace infrared thermal imager to monitor the charge surface condition in real time, identifying furnace problems and issuing alarms immediately based on abnormal temperature points. This allows for problem resolution before escalation, significantly improving the combustion quality of the charge in the electric arc furnace. Compared to conventional operation vehicles, it is simpler to drive, eliminating the need for simultaneous hand and foot operation; this greatly reduces operational difficulty and learning costs. The method allows for unobstructed observation of the workshop operation location from the central control console, providing real-time monitoring of the site and improving the operator's field of vision, thus reducing the probability of accidental injury.

[0079] The electric arc furnace operation method provided in this application embodiment can identify bright abnormal points on the furnace surface in the monitoring screen through visual algorithms, and obtain the temperature and location information of the abnormal points through the environmental perception and recognition device 11. Combining the two recognition results, the abnormal combustion situation of the material surface inside the electric arc furnace can be quantitatively analyzed. The automatic control system 3 can control the material surface maintenance system 2 to work according to the recognition results, perform material surface maintenance work in the area where the abnormal point is located, and accurately act on the abnormal point inside the furnace. At the same time, according to the real-time abnormal point temperature value obtained by the environmental perception and recognition device 11, the material surface maintenance system 2 can autonomously judge and select the mode, number and depth of the operation action to achieve precise maintenance of the material surface inside the furnace.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate this application and are not intended to limit this application. Although this application has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of this application do not depart from the spirit and scope of the technical solutions of this application and should be covered within the scope of the claims of this application.

Claims

1. An operation system of an electric arc furnace, characterized by, The application relates to a material surface maintenance system and a method thereof. The system comprises: a monitoring system for collecting environment information of a working site and information of identified abnormal points; a material surface maintenance system for performing maintenance work; a control system for receiving the information of abnormal points from the monitoring system, analyzing the temperature value in the information of abnormal points, and sending a control signal to the material surface maintenance system based on the analysis result; 2. The submerged arc furnace operation system of claim 1, wherein, a man-machine operation system for collecting operation commands of an operator and transmitting the operation commands to the control system.

3. The submerged arc furnace operation system of claim 1, wherein, The material surface maintenance system comprises a communication and control unit, a walking mechanism, a rotating mechanism and a working mechanism, and the communication and control unit adjusts the walking position, rotating angle and action posture of the working mechanism through the walking mechanism and the rotating mechanism. The man-machine operation system comprises: a central control operation table; a central control table base for installing the central control operation table; an electric control handle for an operator to exert a control action; 4. The submerged arc furnace operation system of claim 1, wherein a seat assembly for bearing the operator.

5. A method of operating an arc furnace, characterized by The monitoring system is further arranged to transmit a video signal and an alarm signal to the man-machine operation system to assist the operator in judgment. The application relates to a material surface maintenance system and a method thereof. The system comprises: receiving environment information of a current material surface in a furnace acquired by an environment sensing and identifying device; identifying the acquired environment information; acquiring accurate temperature of an abnormal point contained in the environment information; analyzing, based on preset minimum and maximum safety temperature values and the acquired abnormal point temperature information, a working mode to be adopted; controlling a working mechanism to perform material surface maintenance work; analyzing, based on preset threshold temperature and the acquired abnormal point temperature information, a working configuration to be adopted; 6. The operation method of the ore smelting furnace according to claim 5, characterized in that, performing a working action; receiving real-time monitoring temperature information fed back by the environment sensing and identifying device, and judging whether the abnormal point temperature belongs to a safety range. The analysis based on the preset minimum and maximum safety temperature values and the acquired abnormal point temperature information to judge the working mode to be adopted comprises:

7. The operation method of the ore smelting furnace according to claim 6, characterized in that, based on the acquired abnormal point temperature being less than the preset minimum safety temperature value, adopting a first working mode, which is a material tamping working mode; based on the acquired abnormal point temperature being greater than the preset maximum safety temperature value, adopting a second working mode, which is a material pushing working mode. The material tamping working mode comprises: using a first tool to perform maintenance work on the abnormal point position, tamping and crushing a cavity of a low-temperature abnormal point, and pushing surrounding raw material to the abnormal point to maintain a flat and continuously smoldering state of the material surface; 8. The submerged-arc furnace operation method according to claim 6, characterized in that, The material pushing working mode comprises: using a second tool to perform maintenance work on the abnormal point position, and using the second tool to push cold material around the abnormal point to the abnormal point to cover a high-temperature abnormal point and maintain a smoldering state of the material surface in the furnace. The analysis based on the preset threshold temperature and the acquired abnormal point temperature information to judge the working configuration to be adopted comprises: based on the acquired abnormal point temperature being greater than or equal to a first threshold temperature, adopting a first working configuration; based on the acquired abnormal point temperature being less than the first threshold temperature and greater than or equal to a second threshold temperature, adopting a second working configuration; based on the acquired abnormal point temperature being less than the second threshold temperature, adopting a third working configuration; based on the acquired abnormal point temperature being less than or equal to a third threshold temperature, adopting a fourth working configuration; based on the acquired abnormal point temperature being greater than the third threshold temperature and less than or equal to the fourth threshold temperature, a fifth operation configuration is adopted; based on the acquired abnormal point temperature being greater than the fourth threshold temperature, a sixth operation configuration is adopted; the second threshold temperature < the first threshold temperature < the minimum safety temperature < the maximum safety temperature < the third threshold temperature < the fourth threshold temperature.

9. The submerged-arc furnace operation method according to claim 8, characterized in that, the first operation configuration comprises: controlling the material surface maintenance system to carry out a first amplitude of furnace ramming, the operation depth is a first depth, and the operation frequency is a first frequency; the second operation configuration comprises: controlling the material surface maintenance system to carry out a second amplitude of furnace ramming, the operation depth is a second depth, and the operation frequency is a second frequency; the third operation configuration comprises: controlling the material surface maintenance system to carry out a third amplitude of furnace ramming, the operation depth is a third depth, and the operation frequency is a third frequency; wherein the first amplitude < the second amplitude < the third amplitude, the first depth < the second depth < the third depth, and the first frequency < the second frequency < the third frequency; the fourth operation configuration comprises: controlling the material surface maintenance system to carry out a fourth amplitude of material pushing, the operation depth is a fourth depth, and the operation frequency is a fourth frequency; the fifth operation configuration comprises: controlling the material surface maintenance system to carry out a fifth amplitude of material pushing, the operation depth is a fifth depth, and the operation frequency is a fifth frequency; the sixth operation configuration comprises: controlling the material surface maintenance system to carry out a sixth amplitude of material pushing, the operation depth is a sixth depth, and the operation frequency is a sixth frequency; wherein the fourth amplitude < the fifth amplitude < the sixth amplitude, the fourth depth < the fifth depth < the sixth depth, and the fourth frequency < the fifth frequency < the sixth frequency.

10. The submerged-arc furnace operation method according to any one of claims 5 to 9, characterized by, the identification of the acquired environmental information comprises: the accurate in-furnace position of the abnormal point is obtained by analysis, which is used to guide the movement of the walking mechanism, the rotating mechanism and the operation mechanism of the material surface maintenance system in the subsequent control system.

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