Methods, apparatus, media and equipment for measuring the thickness of converter lining

Abstract

This application discloses a method, apparatus, medium, and equipment for measuring the thickness of a converter lining. The method includes: performing slag splashing to protect the converter lining after tapping; controlling an oxygen lance to purge the flue gas inside the converter from low to high positions for a target duration, where the lance position refers to its location within the furnace; and after purging, controlling the converter to move to the target thickness measurement position and controlling a laser thickness gauge to measure the thickness of the converter lining. This application utilizes an oxygen lance to purge the flue gas inside the converter after tapping, with the lance position controlled from low to high during the purging process. This increases the purging rate, thereby reducing the waiting time from tapping to lining thickness measurement and improving converter operation efficiency.

Description

Technical Field

[0001] This application belongs to the field of converter maintenance technology, and in particular relates to a method, apparatus, medium and equipment for measuring the thickness of converter lining. Background Technology

[0002] Long-life converter smelting is an important support for achieving cost reduction and efficiency improvement, and the key to achieving long-life converter smelting lies in the maintenance of the furnace lining. During the charging process, the converter is subjected to the physical impact of raw materials such as scrap steel and molten iron, and during the blowing process, it is subjected to the physical erosion and chemical corrosion of the high-temperature molten pool. Therefore, the converter lining needs to be maintained regularly.

[0003] Common furnace lining repair methods include slag splashing and lining spraying. Slag splashing is performed after each heat of smelting, while lining spraying is generally carried out after several heats, based on monitoring of the lining erosion. For monitoring lining erosion, laser thickness measurement is a common method. This method can obtain data on the erosion status of different areas of the lining, and based on this, repair materials are used to spray severely eroded areas. In actual production, after converter blowing, due to the oxidation of residual steel and the oxidation of molten metal droplets in the slag layer, a large amount of smoke and dust is generated inside the furnace. Under these conditions, it is difficult to immediately perform laser thickness measurement; it must wait until the smoke and dust dissipates, which takes a long time. This reduces converter smelting efficiency and thus affects the high-efficiency production of the steelmaking process. Summary of the Invention

[0004] The embodiments of this application provide a method for measuring the thickness of a converter lining, which can at least to some extent reduce the waiting time from tapping the steel to measuring the thickness of the lining and improve the efficiency of converter operations.

[0005] Other features and advantages of this application will become apparent from the following detailed description, or may be learned in part from practice of this application.

[0006] The first aspect of this application provides a method for measuring the thickness of a converter lining, including: After the converter taps steel, a slag splashing operation is performed on the furnace lining of the converter to protect the furnace. The oxygen lance is controlled to purge the flue gas inside the converter from low to high positions for a target duration, wherein the position of the oxygen lance is the location of the oxygen lance inside the converter. After purging, the converter is moved to the target thickness measurement position and the laser thickness gauge is used to measure the thickness of the converter lining.

[0007] Optionally, before tapping steel from the converter, the method further includes: After the ratio between the current oxygen supply of the oxygen lance and the target total oxygen supply reaches the target ratio, a slag conditioner is added to the converter to make the magnesium oxide content in the slag of the converter reach a first content; wherein the target ratio is 0.8-0.9 and the first content is 10%-12%.

[0008] Optionally, before tapping steel from the converter, the method further includes: When the iron oxide content in the slag reaches a second content, the converter is controlled to tap steel; wherein the second content is 14%-16%.

[0009] Optionally, controlling the converter to tap steel includes: The converter is controlled to tap steel at a preset angle, wherein the preset angle is 101 degrees to 110 degrees.

[0010] Optionally, the oxygen lance has 2 to 4 positions during the purging process.

[0011] Optionally, the oxygen lance has N lance positions during the purging process, where N is greater than or equal to 2. The position information of the i-th lance position among the N lance positions is: H / 4 + iH / 10, where H represents the vertical distance from the converter mouth to the furnace bottom.

[0012] Optionally, the target duration is less than or equal to 1 minute, and the purging time of the oxygen lance at each lance position is 10-15 seconds.

[0013] A second aspect of this application provides a converter lining thickness measuring device, comprising: A furnace protection unit is used to perform slag splashing protection on the furnace lining of the converter after the converter taps steel. The purging unit is used to control the oxygen lance to purge the flue gas inside the converter from low to high lance positions for a target duration, wherein the lance position is the location of the oxygen lance inside the converter. The thickness measurement unit is used to control the converter to move to the target thickness measurement position and control the laser thickness gauge to measure the thickness of the converter lining after purging.

[0014] A third aspect of this application provides a computer-readable storage medium storing at least one computer program instruction, which is loaded and executed by a processor to perform the operations described in any of the methods described in the first aspect.

[0015] A fourth aspect of this application provides an electronic device including one or more processors and one or more memories, wherein at least one piece of program code is stored in the one or more memories, and the at least one piece of program code is loaded and executed by the one or more processors to perform the operation as described in any of the methods in the first aspect.

[0016] The one or more technical solutions provided in the embodiments of the present invention achieve at least the following technical effects or advantages: The converter lining thickness measurement method of this application includes: performing slag splashing protection on the converter lining after steel tapping; controlling an oxygen lance to purge the flue gas inside the converter from low to high positions for a target duration, wherein the lance position is the location of the oxygen lance inside the furnace; after purging, controlling the converter to move to the target thickness measurement position and controlling a laser thickness gauge to measure the thickness of the converter lining. Therefore, this application embodiment, after steel tapping, uses an oxygen lance to purge the flue gas inside the furnace, and the oxygen lance position is controlled from low to high during the purging process, which can increase the dust purging rate, thereby reducing the waiting time from steel tapping to lining thickness measurement and improving converter operation efficiency.

[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings: Figure 1 A flowchart illustrating the converter lining thickness measurement method according to an embodiment of this application is shown; Figure 2 A structural diagram of the converter lining thickness measuring device according to an embodiment of this application is shown; Figure 3 A schematic diagram of the structure of a computer system suitable for implementing the electronic device of the present application is shown. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0020] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0021] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, in one or more hardware modules or integrated circuits, or in different models and / or processor devices and / or microcontroller devices.

[0022] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.

[0023] It should also be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such uses of these terms can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described.

[0024] Long-life converter smelting is a crucial support for cost reduction and efficiency improvement, and the key to achieving long-life converter smelting lies in the maintenance of the furnace lining. During the charging process, the converter is subjected to physical impacts from raw materials such as scrap steel and molten iron, and during the blowing process, it is subjected to physical erosion and chemical corrosion from the high-temperature molten pool. Therefore, the converter lining needs regular maintenance. Common lining maintenance methods include slag splashing protection and lining spraying. Slag splashing protection is performed after each heat of blowing, while lining spraying is generally carried out after several heats, based on monitoring of the lining erosion status. For monitoring the lining erosion status, a common method is laser thickness measurement. This method can obtain data on the erosion status of different areas of the lining, and based on this, repair materials are used to spray the severely eroded areas of the lining. In actual production, after converter blowing, a large amount of smoke and dust is generated in the furnace due to the oxidation of the remaining steel and the oxidation of metal droplets in the slag layer. Under this environment, it is difficult to carry out laser thickness measurement immediately. It is necessary to wait until the smoke and dust dissipate before it can be carried out. The waiting time is long, which reduces the efficiency of converter smelting and thus affects the high-efficiency production of the steelmaking process.

[0025] In view of this, the present application provides a method for measuring the thickness of a converter lining. After the steel is tapped from the converter, the flue gas inside the furnace is purged by an oxygen lance. During the purging process, the position of the oxygen lance is controlled from low to high, which can increase the purging rate of the flue gas, thereby reducing the waiting time from tapping the steel to measuring the thickness of the furnace lining and improving the efficiency of converter operation.

[0026] The method for measuring the thickness of the converter lining according to an embodiment of this application will be described below with reference to the accompanying drawings.

[0027] Figure 1 A flowchart of a converter lining thickness measurement method according to an embodiment of this application is shown.

[0028] The first aspect of this application provides a method for measuring the thickness of a converter lining, including but not limited to: Step S10. After tapping steel from the converter, perform slag splashing operation on the furnace lining of the converter to protect the furnace; For example, after the converter has finished tapping and all molten steel has been removed, the converter is tilted to the zero position to ensure there is no residual molten steel inside, preventing safety accidents during splashing. Then, the oxygen lance is switched to a high-pressure nitrogen system, and the furnace lining spray lance is inserted vertically into the furnace from above the furnace opening, lowering its position to a predetermined height (usually 1.5 to 2.5 meters from the molten pool surface at the bottom of the furnace). The high-pressure nitrogen valve is then opened, using a high pressure (0.8 to 1.2 MPa) to blow up the molten slag at high speed and splash it onto the inner wall of the furnace lining. Through the impact and splashing of the nitrogen stream, the slag is evenly coated on the entire surface of the furnace lining, especially vulnerable areas such as the trunnions and slag lines. During the splashing process, the lance height and nitrogen pressure need to be finely adjusted in real time according to the slag splashing situation and the sound inside the furnace to ensure the splashing effect. When it is observed that the slag has been fully splashed up and covers the furnace lining, and the slag begins to become sticky and the splashing inside the furnace weakens, it indicates that the splashing is nearly complete. At this point, the nitrogen pressure is gradually reduced and the lance is slowly raised. After the slag splashing is completed, the furnace body is slowly tilted to pour out the excess slag that was not splashed out, thus completing the slag splashing and furnace protection operation.

[0029] Thus, a solid or semi-molten slag layer with high refractoriness and strong adhesion is formed by physical splashing, covering the surface of the original furnace lining refractory material. This effectively reduces the chemical erosion and mechanical scouring of the furnace lining by high-temperature molten steel, slag and gas flow during the next smelting, and extends the service life of the converter furnace lining.

[0030] In some embodiments, prior to tapping steel from the converter, the method further includes: After the ratio between the current oxygen supply of the oxygen lance and the target total oxygen supply reaches the target ratio, a slag conditioner is added to the converter to make the magnesium oxide content in the converter slag reach a first content; wherein the target ratio is 0.8-0.9, for example 0.8, 0.85, 0.9, and the first content is 10%-12%, for example 10%, 11%, and 12%.

[0031] It is understandable that when the ratio between the current oxygen supply of the oxygen lance and the target total oxygen supply reaches the target ratio, it indicates that the converter has entered the later stage of blowing. The role of adding slag conditioner in the later stage of blowing is to adjust the magnesium oxide (MgO) content in the slag, increase the slag viscosity, and provide a basis for subsequent slag splashing for furnace protection. If the slag conditioner is added too early, the resulting slag with higher viscosity will have an adverse effect on the kinetic conditions of the slag-steel reaction during the blowing process. If the slag conditioner is added too late, it will affect the stable control of the blowing endpoint on the one hand, and the melting effect of the slag conditioner on the other hand. In addition, in the embodiments of this application, when the magnesium oxide content reaches 10%-12%, the slag has a high adhesion force, which can meet the requirements of slag splashing for furnace protection.

[0032] For example, slag conditioners can be lightly calcined dolomite, magnesia balls, raw dolomite, magnesite, magnesium oxide powder, and modifiers for slag conditioning.

[0033] In some embodiments, prior to tapping steel from the converter, the method further includes: When the iron oxide content in the slag reaches a second content, the converter is controlled to tap steel; wherein the second content is 14%-16%, for example, 14%, 15% or 16%.

[0034] It should be noted that, generally, steel can be tapped from the converter when the carbon content and temperature of the molten pool meet the target requirements. In the embodiments of this application, the iron oxide content can be characterized by the T.Fe content in the slag. Good slag splashing protection requires the slag to have both high adhesion and a certain degree of fluidity. According to thermodynamic calculations, FeO can lower the slag melting temperature and improve its fluidity. Since FeO in the slag is mainly manifested in the form of T.Fe, ensuring the T.Fe content is equivalent to ensuring the FeO content. The FeO content should not be too high, otherwise it will affect the slag adhesion effect.

[0035] In some embodiments, controlling the converter to tap steel includes: The converter is controlled to tap steel at a preset angle, wherein the preset angle is 101 degrees to 110 degrees, for example, 101 degrees, 103 degrees, 104 degrees, 106 degrees, 108 degrees or 110 degrees.

[0036] It is understandable that the conventional tapping angle is usually 100 degrees. The embodiments of this application increase the tapping angle based on the conventional tapping angle, for example, by 1-2 degrees. Thus, by adjusting the tapping angle, the molten steel is ensured to be completely tapped, the amount of residual steel in the furnace is controlled, and the amount of smoke and dust generated by the oxidation of the residual steel is controlled.

[0037] Step S20. Control the oxygen lance to purge the flue gas inside the converter from low to high lance positions for a target duration, wherein the lance position is the location of the oxygen lance inside the converter; Understandably, after the converter blowing process is completed, the smoke and dust are dispersed throughout the furnace body. By adopting a variable gun position operation from low to high, the transmission of smoke and dust from the bottom to the top of the furnace is accelerated, and then discharged through the flue gas duct connected to the dust removal fan, thereby improving the blowing efficiency.

[0038] It should be noted that when controlling the oxygen lance to purge the flue gas inside the furnace, the oxygen lance can spray nitrogen gas to purge the flue gas.

[0039] For example, the oxygen lance is switched to purging mode, ensuring a stable connection with the high-pressure nitrogen system. Then, the lance position is precisely controlled at a low height (e.g., approximately 1.2 meters from the residual slag surface at the furnace bottom), and the nitrogen valve is opened. The high-speed jet of the nitrogen is used to perform a preliminary, powerful purging of the furnace bottom area to disperse and carry away the deposited coarse dust particles. Next, the lance position is gradually raised (e.g., in increments of 0.4 meters). At each new lance position height, purging is maintained for a specific duration, allowing the nitrogen flow to fully agitate and remove fine dust suspended on the inner walls and in the space corresponding to that furnace height. This gradual change in lance position ensures the cleanliness of the entire three-dimensional space from the furnace bottom, molten pool area, furnace body, to the furnace throat. The entire purging process is performed continuously for the preset target duration, thereby quickly removing residual dust from the furnace after the slag layer forms, providing a basis for subsequent furnace lining thickness measurement.

[0040] In some embodiments, the oxygen lance has 2 to 4 positions during the purging process, for example, 2, 3 or 4.

[0041] In some embodiments, the number of purge gun positions is set to 2 to 4 (e.g., 2, 3 or 4). Understandably, compared to a fixed single lance position, setting up multiple lance positions allows for stratified and targeted purging of different height areas within the furnace, avoiding blind spots and ensuring that dust from the furnace bottom to the furnace throat is removed step by step. At the same time, compared to setting too many lance positions, 2 to 4 lance positions can simplify the operation process, reduce unnecessary lance position switching and time consumption, making the entire process more controllable and stable within the preset target time, and improving the production efficiency of the converter process while ensuring rapid dust removal.

[0042] In some embodiments, the oxygen lance has N lance positions during the purging process, where N is greater than or equal to 2. The position information of the i-th lance position among the N lance positions is: H / 4+iH / 10, where H represents the vertical distance from the converter mouth to the furnace bottom.

[0043] For example, the initial gun position (i=1) is set at about 35% of the furnace depth (H / 4 + H / 10), avoiding the furnace bottom where slag is most likely to accumulate, and prioritizing the blowing of dense smoke and dust areas; subsequent gun positions increase in increments of 10% (H / 10) of the furnace height, achieving uniform and non-overlapping segmented coverage of the entire furnace space.

[0044] In some embodiments, the target duration is less than or equal to 1 minute, and the purging duration of the oxygen lance at each lance position is 10-15 seconds.

[0045] Understandably, a shorter target duration enables rapid dust removal, reduces the burden on subsequent processes, and improves operational efficiency. Allocating 10-15 seconds of purging time to each nozzle position ensures that the nitrogen flow has sufficient operating time to fully agitate and carry away the dust in the corresponding area, while avoiding the waste of time and energy caused by prolonged stagnation in a single location.

[0046] Step S30. After purging, control the converter to move to the target thickness measurement position and control the laser thickness gauge to measure the thickness of the converter lining.

[0047] Understandably, after purging, the thickness of the protective lining layer formed by slag splashing is measured. For example, the converter opening is rotated and positioned to a preset target thickness measurement location using a converter tilting system. Once positioned, a pre-installed and aligned laser thickness gauge is activated. This instrument emits a laser beam towards the inner wall of the lining, receives the reflected signal, and calculates the round-trip time of the light wave to non-contactly measure the total thickness of the slag splashed layer and the original lining. The obtained data is automatically recorded and transmitted to the control system, providing a basis for judging the lining condition, guiding subsequent furnace repair operations, or adjusting the slag splashing process parameters for the next furnace, thus achieving refined management of the lining life.

[0048] Therefore, in this embodiment, lightly calcined dolomite is added in the later stage of converter blowing (when the real-time oxygen supply of the oxygen lance reaches 80%-90% of the preset total oxygen supply), and the MgO content in the slag is controlled at 10%-12% and the T.Fe content is controlled at 14%-16%. This regulation avoids the adverse effects of early addition on slag-steel reaction kinetics and the interference of late addition on endpoint control and melting effect, while ensuring that the slag has both high adhesion and suitable fluidity, laying a solid foundation for efficient slag splashing and furnace protection, and indirectly creating favorable conditions for subsequent furnace lining thickness measurement. During tapping, the tapping angle is increased by 1°-2° compared to conventional non-thickness-measuring furnace operations. This effectively ensures complete tapping of molten steel, reduces the amount of residual steel in the furnace, and decreases the amount of smoke and dust generated by the oxidation of residual steel. After slag splashing for furnace protection, the oxygen lance is used at 2-4 specific positions from low to high, with nitrogen gas at 80%-100% of the maximum oxygen lance flow rate. Each position is held for 10-15 seconds to purge the smoke and dust, accelerating the transfer and discharge of smoke and dust from the furnace bottom to the furnace top, improving purging efficiency, providing a clear and accurate measurement environment for laser thickness measurement, reducing thickness measurement waiting time, and improving production efficiency.

[0049] Figure 2 A structural diagram of a converter lining thickness measuring device according to an embodiment of this application is shown.

[0050] A second aspect of this application provides a converter lining thickness measuring device 200, comprising: The furnace protection unit 201 is used to perform slag splashing protection operation on the furnace lining of the converter after the converter taps steel. The purging unit 202 is used to control the oxygen lance to purge the flue gas inside the converter from low to high lance positions for a target duration, wherein the lance position is the position of the oxygen lance inside the converter. Thickness measuring unit 203 is used to control the converter to move to the target thickness measuring position and control the laser thickness gauge to measure the thickness of the converter lining after purging.

[0051] Based on the above disclosure, the converter lining thickness measuring device of this application embodiment performs slag splashing protection operation on the converter lining after steel tapping by a furnace protection unit; a purging unit controls an oxygen lance to purge the flue gas inside the converter from low to high positions for a target duration, wherein the lance position is the location of the oxygen lance inside the furnace; after purging, the thickness measuring unit controls the converter to move to the target thickness measuring position and controls a laser thickness gauge to measure the thickness of the converter lining. Therefore, this application embodiment, after steel tapping, uses an oxygen lance to purge the flue gas inside the furnace, and the oxygen lance position is controlled from low to high during the purging process, which can increase the dust purging rate, thereby reducing the waiting time from steel tapping to lining thickness measurement and improving converter operation efficiency.

[0052] A third aspect of this application provides a computer-readable storage medium storing at least one computer program instruction, which is loaded and executed by a processor to perform the operations as described in any of the methods in the first aspect.

[0053] Computer-readable storage media may be portable compact disc read-only memory (CD-ROM) and include program code, and may run on a terminal device, such as a personal computer. However, the computer-readable storage medium of this application is not limited thereto. In this application, the readable storage medium may be any tangible medium that contains or stores a program that may be used by or in conjunction with an instruction execution system, apparatus, or device.

[0054] A readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples (a non-exhaustive list) of readable storage media include: an electrical connection having one or more wires, a portable disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof.

[0055] Program code for performing the operations of this application can be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java and C++, and conventional procedural programming languages ​​such as C or similar languages. The program code can execute entirely on the user's computing device, partially on the user's computing device, as a standalone software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server. In cases involving remote computing devices, the remote computing device can be connected to the user's computing device via any type of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computing device (e.g., via the Internet using an Internet service provider).

[0056] A fourth aspect of this application provides an electronic device including one or more processors and one or more memories, wherein at least one piece of program code is stored in the one or more memories, and the at least one piece of program code is loaded and executed by the one or more processors to perform the operation as described in any of the methods in the first aspect.

[0057] like Figure 3As shown, the electronic device 400 is manifested in the form of a general-purpose computing device. The components of the electronic device 400 may include, but are not limited to: at least one processing unit 410, at least one storage unit 420, and a bus 430 connecting different system components (including storage unit 420 and processing unit 410).

[0058] The storage unit stores program code, which can be executed by the processing unit 410, causing the processing unit 410 to perform the steps described in the "Embodiment Method" section above according to various exemplary embodiments of this application.

[0059] Storage unit 420 may include readable media in the form of volatile storage units, such as random access memory (RAM) 421 and / or cache 422, and may further include read-only memory (ROM) 423.

[0060] Storage unit 420 may also include a program / utility 424 having a set (at least one) of program modules 425, such program modules 425 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of these examples may include an implementation of a network environment.

[0061] Bus 430 can represent one or more of several types of bus structures, including a memory cell bus or memory cell controller, a peripheral bus, a graphics acceleration port, a processing unit, or a local bus using any of the various bus structures.

[0062] Electronic device 400 can also communicate with one or more external devices 500 (e.g., keyboard, pointing device, Bluetooth device, etc.), and with one or more devices that enable a user to interact with electronic device 400, and / or with any device that enables electronic device 400 to communicate with one or more other computing devices (e.g., router, modem, etc.). This communication can be performed through I / O (input / output) interface 450, which can also be connected to display unit 440 to display the communication content. Furthermore, electronic device 400 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public network, such as the Internet) through network adapter 460. As shown, network adapter 460 communicates with other modules of electronic device 400 via bus 430. It should be understood that, although not shown in the figures, other hardware and / or software modules can be used in conjunction with electronic device 400, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0063] The functions described herein can be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions can be stored as one or more instructions or codes on or transmitted via a computer-readable medium. Other examples and embodiments are within the scope and spirit of this invention and the appended claims. For example, due to the nature of software, the functions described above can be implemented using software executed by a processor, hardware, firmware, hardwired, or any combination thereof. Furthermore, the functional units can be integrated into a single processing unit, or each unit can exist physically separately, or two or more units can be integrated into a single unit.

[0064] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual couplings, direct couplings, or communication connections may be through some interfaces; indirect couplings or communication connections between units or modules may be electrical or other forms.

[0065] The units described as separate components may or may not be physically separate. Similarly, the components of the control device may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment, depending on actual needs.

[0066] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0067] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A method for measuring the thickness of a converter lining, characterized in that, include: After the converter taps steel, a slag splashing operation is performed on the furnace lining of the converter to protect the furnace. The oxygen lance is controlled to purge the flue gas inside the converter from low to high positions for a target duration, wherein the position of the oxygen lance is the location of the oxygen lance inside the converter. After purging, the converter is moved to the target thickness measurement position and the laser thickness gauge is used to measure the thickness of the converter lining.

2. The method according to claim 1, characterized in that, Before the steel is tapped from the converter, the method further includes: After the ratio between the current oxygen supply of the oxygen lance and the target total oxygen supply reaches the target ratio, a slag conditioner is added to the converter to make the magnesium oxide content in the slag of the converter reach a first content; wherein the target ratio is 0.8-0.9 and the first content is 10%-12%.

3. The method according to claim 1 or 2, characterized in that, Before the steel is tapped from the converter, the method further includes: When the iron oxide content in the slag reaches a second content, the converter is controlled to tap steel; wherein the second content is 14%-16%.

4. The method according to claim 3, characterized in that, The control of the converter to tap steel includes: The converter is controlled to tap steel at a preset angle, wherein the preset angle is 101 degrees to 110 degrees.

5. The method according to claim 1, characterized in that, The oxygen lance has 2 to 4 positions during the purging process.

6. The method according to claim 1, characterized in that, The oxygen lance has N positions during the purging process, where N is greater than or equal to 2. The position information of the i-th position among the N positions is: H / 4 + iH / 10, where H represents the vertical distance from the converter mouth to the furnace bottom.

7. The method according to claim 1, characterized in that, The target duration is less than or equal to 1 minute, and the purging time of the oxygen lance at each lance position is 10-15 seconds.

8. A converter lining thickness measuring device, characterized in that, include: A furnace protection unit is used to perform slag splashing protection operation on the furnace lining of the converter after the converter taps steel. The purging unit is used to control the oxygen lance to purge the flue gas inside the converter from low to high lance positions for a target duration, wherein the lance position is the location of the oxygen lance inside the converter. The thickness measurement unit is used to control the converter to move to the target thickness measurement position and control the laser thickness gauge to measure the thickness of the converter lining after purging.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores at least one computer program instruction, which is loaded and executed by a processor to perform the operation as described in any one of claims 1-7.

10. An electronic device, characterized in that, It includes one or more processors and one or more memories, wherein at least one piece of program code is stored in the one or more memories, and the at least one piece of program code is loaded and executed by the one or more processors to perform the operation performed by the method as described in any one of claims 1-7.

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