Method, device and apparatus for slag splashing and protecting a converter

Abstract

The application discloses a slag splashing and protecting method, device and equipment for a converter, and comprises the following steps: determining the kind and adding amount of a slag adjusting agent; controlling the oxygen lance to move to a nitrogen opening point and start releasing nitrogen; determining a slag splashing index, which is used for measuring the size and uniformity of the slag splashing in the converter; controlling the oxygen lance to move to a lowest slag splashing lance position and controlling the charging equipment to add the slag adjusting agent into the converter; and determining the lance position of the oxygen lance based on the slag splashing time length and the slag splashing index. The quality of the slag splashing and protecting is improved by the application.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of smelting, and particularly relates to a method, device and equipment for slag splashing and protecting a converter. BACKGROUND

[0002] The slag splashing and protecting of a converter is a new technology for improving the service life of a converter, which was first developed by Praxair Inc. in the Lake Michigan Division of the Republic Steel Corporation in the United States. In 1994, the slag splashing and protecting technology was adopted in the Indiana Harbor Plant of the LTV Corporation in the United States, and the service life of the converter lining reached 15,658 heats, the consumption of gunning material was reduced to 0.38 kg / t of steel, the cost of gunning material was saved by 66%, and the operating rate of the converter was increased by 24%. After that, more than 15 steel plants in the United States adopted the technology, and Canada, the United Kingdom, Japan and other countries have also successively adopted the technology for trial and application. In China, the slag splashing and protecting of a converter has been tested since 1994, and the speed of adoption and development is very fast. The slag splashing and protecting is a major progress in the technology for protecting a converter, and can greatly improve the service life of a converter and reduce the consumption of refractory materials.

[0003] The operation of the slag splashing and protecting is manually controlled by the experience of an operator, which brings a series of problems, such as the rising of the bottom of the converter caused by the over-sticking of the slag, and the late slagging or long time of slag splashing caused by the unreasonable control of the lance position. Therefore, it is a technical problem to be solved to improve the quality of the slag splashing and protecting. SUMMARY

[0004] The embodiments of the present application provide a method, device and equipment for the slag splashing and protecting of a converter, and improve the quality of the slag splashing and protecting.

[0005] In a first aspect, the embodiments of the present application provide a method for the slag splashing and protecting of a converter, which comprises: determining the type and adding amount of a slag adjusting agent; controlling an oxygen lance to move to a nitrogen opening point and start releasing nitrogen; determining a slag splashing index, which is used to measure the size and uniformity of the slag particles in the converter; controlling the oxygen lance to move to a lowest slag splashing lance position, and controlling a charging device to add the slag adjusting agent to the converter; and determining the lance position of the oxygen lance based on the slag splashing time and the slag splashing index.

[0006] In combination with the first aspect of the present application, in some embodiments, the determination of the lance position of the oxygen lance based on the slag splashing time and the slag splashing index comprises: if the slag splashing time is within a preset first time range, and the slag splashing index is greater than a preset first threshold, controlling the oxygen lance to move to a highest slag splashing lance position; and if the slag splashing index is not greater than a preset second threshold, controlling the oxygen lance to move to an intermediate slag splashing lance position, the first threshold being greater than the second threshold.

[0007] In some embodiments of the first aspect of the present application, the determining the lance position based on the splashing time and the splashing index comprises: when the splashing time is within a preset second time range, controlling the oxygen lance to move to the lowest splashing lance position, wherein a lower limit of the second time range is greater than an upper limit of the first time range.

[0008] In some embodiments of the first aspect of the present application, the determining the lance position based on the splashing time and the splashing index comprises: when the splashing index is less than a preset third threshold value or the splashing time is greater than a preset fourth threshold value, controlling the oxygen lance to stop releasing nitrogen gas and ending the splashing, wherein the third threshold value is less than the second threshold value and the fourth threshold value is greater than an upper limit of the second time range.

[0009] In some embodiments of the first aspect of the present application, the determining the splashing index comprises: obtaining a converter port image; obtaining a splashing slag particle distribution frequency and a slag particle diameter dispersion index of a certain particle size range based on the converter port image; and obtaining the splashing index based on the splashing slag particle distribution frequency and the slag particle diameter dispersion index of the certain particle size range.

[0010] In some embodiments of the first aspect of the present application, the determining the type and the adding amount of the slag conditioner comprises: obtaining smelting process information in response to a splashing start signal; and obtaining the type and the adding amount of the slag conditioner based on the smelting process information.

[0011] In some embodiments of the first aspect of the present application, the smelting process information comprises a smelting steel grade, a slag composition, a terminal point oxygen and a molten steel temperature of the converter.

[0012] In some embodiments of the first aspect of the present application, the first time range comprises 0-150 seconds of the splashing time.

[0013] In the second aspect of the present application, an embodiment of a splashing protection device for a converter is provided, which comprises: a slag conditioner determining unit configured to determine the type and the adding amount of a slag conditioner; a first control unit configured to control an oxygen lance to move to a nitrogen release point and start releasing nitrogen gas; an index determining unit configured to determine a splashing index, the splashing index being used to measure the size and uniformity of splashing slag particles in the converter; and a second control unit configured to control the oxygen lance to move to a lowest splashing lance position and control a charging device to add the slag conditioner to the converter; and a lance position adjusting unit configured to determine the lance position based on the splashing time and the splashing index.

[0014] In the third aspect of the present application, an embodiment of an electronic device is provided, which comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, and the processor implements the method of any one of the first aspect when executing the computer program.

[0015] The one or more technical solutions provided by the embodiments of the present application at least achieve the following technical effects or advantages:

[0016] The embodiments of the present application determine the type and amount of slag conditioner, control the oxygen lance to move to the nitrogen opening point and start releasing nitrogen, determine the splashing slag index, which is used to measure the size and uniformity of the splashing slag particles in the converter, control the oxygen lance to move to the lowest splashing slag lance position, control the charging equipment to add the slag conditioner to the converter, and determine the oxygen lance position based on the splashing slag time and the splashing slag index. The oxygen lance position is determined in combination with the splashing slag time and the splashing slag index to obtain high-quality splashing slag, thereby improving the quality of the splashing slag protection of the converter, reducing the labor intensity of the steelmaking post, liberating the production force, and improving the furnace life. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Figure 1 The flow chart of the splashing slag protection method of the converter in the embodiments of the present application;

[0019] Figure 2 The functional module diagram of the splashing slag protection device of the converter in the embodiments of the present application;

[0020] Figure 3 The structural schematic diagram of the electronic device in the embodiments of the present application. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0022] The description such as "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implying the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0023] The embodiment of the present application provides a slag splashing and protecting method of a converter, referring to Figure 1 The method comprises the following steps:

[0024] S101: determining the type and the adding amount of the slag adjusting agent.

[0025] It can be understood that the method for determining the type and the adding amount of the slag adjusting agent comprises the following steps S1011-S1012:

[0026] S1011: obtaining the smelting process information in response to a slag splashing start signal.

[0027] It should be noted that the smelting process information comprises the smelting steel grade of the converter, the slag composition, the end point oxygen and the molten steel temperature.

[0028] It should be noted that the slag splashing start signal can be a slag splashing button pressed by an operator.

[0029] S1012: obtaining the type and the adding amount of the slag adjusting agent based on the smelting process information.

[0030] S102: controlling the oxygen lance to move to a nitrogen opening point and starting to release nitrogen.

[0031] S103: determining a slag splashing index, the slag splashing index being used for measuring the uniformity of the size of the slag splashing in the converter.

[0032] It can be understood that the method for determining the slag splashing index comprises the following steps S1031-S1033:

[0033] S1031: obtaining a converter mouth image.

[0034] S1032: obtaining the slag particle distribution frequency of a certain particle size range and the slag particle diameter dispersion index based on the converter mouth image.

[0035] It should be noted that the method for obtaining the slag particle distribution frequency of a certain particle size range and the slag particle diameter dispersion index based on the converter mouth image comprises steps 1-2:

[0036] Step 1: Based on the converter mouth image, the splash slag particle distribution frequency in a certain particle size range is obtained.

[0037] Specifically, the number of splash slag particles and the diameter of the splash slag particles of all splashes in the converter mouth image are obtained, and the number of slag particles in a certain particle size range is obtained through the diameter of the splash slag particles of all splashes. Then, the splash slag particle distribution frequency in a certain particle size range is calculated through the number of slag particles in a certain particle size range and the number of splash slag particles of all splashes. The calculation formula can be:

[0038]

[0039] Wherein, f is the splash slag particle distribution frequency in a certain particle size range, N is the number of splash slag particles of all splashes, and Δn is the number of slag particles in a certain particle size range.

[0040] Step 2: Based on the converter mouth image, the slag particle diameter dispersion index is obtained.

[0041] Specifically, the number of splash slag particles and the diameter of the splash slag particles of all splashes in the converter mouth image are obtained, and the number of slag particles in a certain particle size range is obtained through the diameter of the splash slag particles of all splashes. Then, the splash slag particle distribution frequency in a certain particle size range is calculated through the number of slag particles in a certain particle size range and the number of splash slag particles of all splashes. The calculation formula can be:

[0042]

[0043] Wherein, PDI is the slag particle diameter dispersion index, A is the standard deviation of the particle size, and B is the average diameter of the slag particles.

[0044] S1033: Based on the splash slag particle distribution frequency in a certain particle size range and the slag particle diameter dispersion index, the splash index is obtained.

[0045]

[0046] Wherein, PDI is the slag particle diameter dispersion index, f is the splash slag particle distribution frequency in a certain particle size range, and I is the splash index.

[0047] It should be noted that the splash index can be set as a percentage or a sequence number from 0 to 1000 according to different habits.

[0048] S104: Control the oxygen lance to move to the lowest splash lance position, and control the charging equipment to add slag adjusting agent to the converter.

[0049] It should be noted that there are many methods for controlling the charging equipment to add slag adjusting agent to the converter. The first method is to add all at once. The second method is to add gradually during the entire splash protection process.

[0050] S105: determining the oxygen lance position based on the splashing time length and the splashing index.

[0051] It can be understood that the method for determining the oxygen lance position based on the splashing time length and the splashing index comprises the following steps S1051-S1053:

[0052] S1051: if the splashing time length is within a preset first time length range, and the splashing index is greater than a preset first threshold value, the oxygen lance is controlled to move to the highest splashing lance position, and if the splashing index is not greater than a preset second threshold value, the oxygen lance is controlled to move to the intermediate splashing lance position, the first threshold value being greater than the second threshold value.

[0053] It should be noted that the splashing time length can be counted from the moment when the charging equipment starts to add the fluxing agent to the converter.

[0054] It should be noted that the first time length range can be 0-150 seconds of the splashing time length, the first threshold value can be 40%, and the second threshold value can be 30%.

[0055] It should be noted that the intermediate splashing lance position can be a certain position between the highest splashing lance position and the lowest splashing lance position, or can be the lowest splashing lance position.

[0056] S1052: if the splashing time length is within a preset second time length range, the oxygen lance is controlled to move to the lowest splashing lance position, the lower limit value of the second time length range being greater than the upper limit value of the first time length range.

[0057] It should be noted that the second time length range can be 151-210 seconds of the splashing time length.

[0058] S1053: if the splashing index is less than a preset third threshold value or the splashing time length is greater than a preset fourth threshold value, the oxygen lance is controlled to stop releasing nitrogen gas, and the splashing is ended, the third threshold value being less than the second threshold value, and the fourth threshold value being greater than the upper limit value of the second time length range.

[0059] It should be noted that the third threshold value can be 10%, and the fourth threshold value can be 211 seconds of the splashing time length.

[0060] It should be noted that the basic principle of the splashing protection is to adjust the final slag composition after the converter is tapped, and to blow nitrogen gas into the slag through the oxygen lance, so that the slag is splashed and adheres to the furnace lining to form a protective layer for the furnace lining, thereby reducing the mechanical scouring and chemical corrosion of the furnace lining during the steelmaking process, and achieving the purpose of protecting the furnace lining and improving the furnace campaign.

[0061] It should be noted that by the method of the embodiment of the present application, one forehearth cooperation personnel can be reduced, and the labor cost per ton of steel is reduced by 0.1-0.3 yuan / ton.

[0062] To enhance the understanding of the slag splashing method for protecting the converter, the following examples are provided:

[0063] Example One:

[0064] The temperature of the molten steel was 1640°C, the end point carbon was 0.04%, the end point oxygen was 440 ppm, and during the smelting process, 31.26 kg / t of lime, 14.67 kg / t of light-burned lime, and 5.77 kg / t of raw dolomite were added. After the molten steel was tapped, the converter was straightened, the operator clicked the confirmation key for slag splashing, and according to the smelted steel grade, the slag composition, the end point oxygen, the temperature of the molten steel, and the like, 900 kg of raw dolomite was calculated to be added for slag adjustment and was transmitted to the charging equipment. The oxygen lance was controlled to move to the nitrogen opening point, and nitrogen was started to be released. The oxygen lance was controlled to move to the lowest slag splashing lance position, the charging equipment was controlled to add the slag adjustment agent to the converter, the nitrogen flow reached the maximum value, the slag splashing index reached 43% after 34 seconds of slag splashing, at which time the oxygen lance was lifted to the highest slag splashing lance position. After 55 seconds of slag splashing, the slag splashing index was 28%, the oxygen lance was lowered to the middle slag splashing lance position to continue slag splashing. After 70 seconds of slag splashing, the slag splashing index reached 45%, the oxygen lance was lifted to the highest slag splashing lance position. After 90 seconds of slag splashing, the slag splashing index was 27%, the oxygen lance was lowered to the middle slag splashing lance position. After 105 seconds of slag splashing, the slag splashing index was 46%, the oxygen lance was lifted to the highest slag splashing lance position. After 130 seconds of slag splashing, the slag splashing index was 22%, the oxygen lance was lowered to the middle slag splashing lance position again. After 140 seconds of slag splashing, the slag splashing index was 41%, the oxygen lance was lifted to the highest slag splashing lance position. After 150 seconds of slag splashing, the oxygen lance was lowered to the lowest slag splashing lance position and remained stationary, and slag splashing was continued. When the slag splashing reached 200 seconds, the slag splashing index was 9%, and the lifting of the lance ended the slag splashing.

[0065] Example Two:

[0066] The temperature of the molten steel is 1632°C, the end point carbon is 0.025%, the end point oxygen is 520ppm, 29.68kg / t of lime, 16.05kg / t of light-burned dolomite and 2.63kg / t of raw dolomite are added in the smelting process. After the converter is tapped, the converter is straightened, the operator clicks the confirmation key of the splashing slag, and according to the smelting steel grade, the composition of the slag, the end point oxygen condition, the tapping temperature and the like, it is calculated that 200kg of modifying agent, 600kg of raw dolomite and 400kg of light-burned dolomite are needed to adjust the slag and are transmitted to the charging equipment; the oxygen lance is controlled to move to the nitrogen opening point and nitrogen is started to be released, the oxygen lance is controlled to move to the lowest splashing slag lance position, the charging equipment is controlled to add the adjusting agent to the converter, the nitrogen flow reaches the maximum value, the splashing slag index reaches 44% after 40 seconds of splashing slag, at this time the oxygen lance is lifted to the highest splashing slag lance position; the splashing slag index is 29% after 57 seconds of splashing slag, the oxygen lance is lowered to the middle splashing slag lance position to continue splashing slag; the splashing slag index reaches 46% after 80 seconds of splashing slag, the oxygen lance is lifted to the highest splashing slag lance position; the splashing slag index is 28% after 92 seconds of splashing slag, the oxygen lance is lowered to the middle splashing slag lance position; the splashing slag index is 49% after 111 seconds of splashing slag, the oxygen lance is lifted to the highest splashing slag lance position; the splashing slag index is 23% after 141 seconds of splashing slag, the oxygen lance is lowered to the middle splashing slag lance position again; the oxygen lance is lowered to the lowest splashing slag lance position and kept still to continue splashing slag, and the splashing slag ends when the splashing slag index is 12% after 210 seconds of splashing slag.

[0067] Example Three

[0068] The temperature of the molten steel is 1625°C, the end point carbon is 0.08%, the end point oxygen is 268ppm, 30.38kg / t of lime, 14.06kg / t of light-burned dolomite and 4.28kg / t of raw dolomite are added in the smelting process. After the converter is tapped, the converter is straightened, the operator clicks the confirmation key of the splashing slag, and according to the smelting steel grade, the composition of the slag, the end point oxygen condition, the tapping temperature and the like, it is calculated that no adjusting agent is needed; the oxygen lance is controlled to move to the nitrogen opening point and nitrogen is started to be released, the oxygen lance is controlled to move to the lowest splashing slag lance position, the charging equipment is controlled to add the adjusting agent to the converter, the nitrogen flow reaches the maximum value, the splashing slag index reaches 45% after 25 seconds of splashing slag, at this time the oxygen lance is lifted to the highest splashing slag lance position; the splashing slag index is 35% after 56 seconds of splashing slag, the oxygen lance is lowered to the middle splashing slag lance position to continue splashing slag; the splashing slag index reaches 24% after 69 seconds of splashing slag, the oxygen lance is lowered to the lowest splashing slag lance position and kept still to continue splashing slag, and the splashing slag ends when the splashing slag index is 8% after 110 seconds of splashing slag.

[0069] The embodiment of the present application determines the type and addition amount of the slag conditioner, controls the oxygen lance to move to the nitrogen opening point and start releasing nitrogen, determines the splashing slag index, the splashing slag index is used to measure the size and uniformity of the splashing slag particles in the converter, controls the oxygen lance to move to the lowest splashing slag lance position, controls the charging equipment to add the slag conditioner to the converter, and determines the oxygen lance position based on the splashing slag time length and the splashing slag index. The oxygen lance position is determined in combination with the splashing slag time length and the splashing slag index to obtain high-quality splashing slag, thereby improving the quality of the splashing slag protection of the converter, reducing the labor intensity of the steelmaking post, liberating the production force, and improving the furnace life. In addition, the embodiment of the present application can realize remote and unmanned control of the splashing slag process of the converter, create conditions for remote intensive control of the steel plant, and promote the intelligent high-quality development of the steel enterprise.

[0070] Based on the same inventive concept, referring to Figure 2 The embodiment of the present application provides a splashing slag protection device 10 of a converter, which comprises a slag conditioner determination unit 110, a first control unit 120, an index determination unit 130, a second control unit 140, and a lance position adjustment unit 150. The slag conditioner determination unit 110 is used to determine the type and addition amount of the slag conditioner. The first control unit 120 is used to control the oxygen lance to move to the nitrogen opening point and start releasing nitrogen. The index determination unit 130 is used to determine the splashing slag index, which is used to measure the size and uniformity of the splashing slag particles in the converter. The second control unit 140 is used to control the oxygen lance to move to the lowest splashing slag lance position and control the charging equipment to add the slag conditioner to the converter. The lance position adjustment unit 150 is used to determine the oxygen lance position based on the splashing slag time length and the splashing slag index.

[0071] It can be understood that the lance position adjustment unit 150 comprises a first adjustment sub-unit 1510. When the splashing slag time length is within a preset first time length range, if the splashing slag index is greater than a preset first threshold value, the first adjustment sub-unit 1510 controls the oxygen lance to move to the highest splashing slag lance position; if the splashing slag index is not greater than a preset second threshold value, the first adjustment sub-unit 1510 controls the oxygen lance to move to the intermediate splashing slag lance position, and the first threshold value is greater than the second threshold value.

[0072] It can be understood that the lance position adjustment unit 150 comprises a second adjustment sub-unit 1520. When the splashing slag time length is within a preset second time length range, the second adjustment sub-unit 1520 controls the oxygen lance to move to the lowest splashing slag lance position, and the lower limit value of the second time length range is greater than the upper limit value of the first time length range.

[0073] It can be understood that the lance position adjustment unit 150 comprises a third adjustment sub-unit 1530. When the splashing slag index is less than a preset third threshold value or the splashing slag time length is greater than a preset fourth threshold value, the third adjustment sub-unit 1530 controls the oxygen lance to stop releasing nitrogen and end the splashing slag, the third threshold value is less than the second threshold value, and the fourth threshold value is greater than the upper limit value of the second time length range.

[0074] It should be noted that the index determination unit 130 is specifically used for: acquiring an image of the converter furnace opening; obtaining the slag splashing particle distribution frequency and slag particle diameter dispersion index within a certain particle size range based on the converter furnace opening image; and obtaining the slag splashing index based on the slag splashing particle distribution frequency and slag particle diameter dispersion index within the certain particle size range.

[0075] It is understandable that the slag conditioner determination unit 110 is specifically used to: obtain smelting process information in response to the slag splashing start signal; and obtain the type and amount of slag conditioner based on the smelting process information.

[0076] It should be noted that the smelting process information includes the steel grade produced in the converter, slag composition, final oxygen content, and molten steel temperature. The first duration range includes the slag splashing time from 0 to 150 seconds.

[0077] It should be understood that further implementation details of the converter slag splashing furnace protection device 10 in the embodiments of the present invention are as described in the aforementioned converter slag splashing furnace protection method, and will not be repeated here for the sake of brevity.

[0078] Based on the same inventive concept, embodiments of the present invention also provide an electronic device, such as... Figure 3 As shown, it includes a memory 304, a processor 302, and a computer program stored in the memory 304 and capable of running on the processor 302. The processor 302 executes the program to implement the steps described in any embodiment of the converter slag splashing furnace protection method.

[0079] Among them, Figure 3 In this document, a bus architecture (represented by bus 300) is used. Bus 300 may include any number of interconnected buses and bridges, linking various circuits including one or more processors represented by processor 302 and memory represented by memory 304. Bus 300 may also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. Bus interface 305 provides an interface between bus 300 and receiver 301 and transmitter 303. Receiver 301 and transmitter 303 may be the same element, i.e., a transceiver, providing a unit for communicating with various other devices over a transmission medium. Processor 302 is responsible for managing bus 300 and general processing, while memory 304 can be used to store data used by processor 302 during operation.

[0080] The embodiment of the present application determines the type and addition amount of the slag conditioner, controls the oxygen lance to move to the nitrogen opening point and start releasing nitrogen, determines the splashing slag index, the splashing slag index is used to measure the size and uniformity of the splashing slag particles in the converter, controls the oxygen lance to move to the lowest splashing slag lance position, controls the charging equipment to add the slag conditioner to the converter, and determines the oxygen lance position based on the splashing slag time and the splashing slag index. The oxygen lance position is determined in combination with the splashing slag time and the splashing slag index to obtain high-quality splashing slag, thereby improving the quality of the splashing slag protection of the converter, reducing the labor intensity of the steelmaking post, liberating the production capacity, and improving the furnace life. In addition, the embodiment of the present application can realize remote and unmanned control of the converter splashing slag process, create conditions for remote intensive control of the steel plant, and promote the intelligent high-quality development of the steel enterprise.

[0081] 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 on or transferred over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope and spirit of the disclosure and appended claims. For example, due to the nature of software, functions described above can be implemented using software executed by a processor, hardware, firmware, hardwiring, or combinations of any of these. Also, each of the functions can be implemented as a separate function or combined with others in a single function.

[0082] In several embodiments provided in the present application, it should be understood that the disclosed technical content can be implemented by other ways. Among them, the above-mentioned device embodiments are only schematic, for example, the division of the units can be a logical function division, and actual implementation can have another division way, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point, the coupling or direct coupling or communication connection between the units or modules shown or discussed can be indirect coupling or communication connection through some interfaces, units or modules, which can be electrical or other forms.

[0083] The units described as separate components can or can not be physically separated, and the components of the control device can or can not be physical units, that is, they can be located in one place, or can be distributed on multiple units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment scheme.

[0084] The integrated unit, if implemented in the form of a software function unit and sold or used as an independent product, can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application, essentially or in other words, the part that contributes to the prior art or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes various media that can store program codes, such as a U disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a mobile hard disk, a magnetic disk or an optical disk, etc.

[0085] The above only describes the embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the scope of the claims of the present application.

Claims

1. A method for slag splashing protection in a converter, characterized in that, include: Determine the type and amount of slag conditioner to be added; Move the oxygen lance to the nitrogen-opening point and begin releasing nitrogen gas; Determine the slag splashing index, which is used to measure the size and uniformity of slag particles splashed in the converter; Control the oxygen lance to move to the lowest slag splashing position, and control the feeding device to add the slag conditioner to the converter; Determining the oxygen lance position based on the slag splashing duration and slag splashing index includes: if the slag splashing duration is within a preset first duration range, and if the slag splashing index is greater than a preset first threshold, controlling the oxygen lance to move to the highest slag splashing position; if the slag splashing index is not greater than a preset second threshold, controlling the oxygen lance to move to the middle slag splashing position, wherein the first threshold is greater than the second threshold.

2. The slag splashing method for protecting the converter according to claim 1, characterized in that, The determination of the oxygen lance position based on the splashing duration and splashing index includes: When the slag splashing time is within a preset second time range, the oxygen lance is controlled to move to the lowest slag splashing lance position, and the lower limit of the second time range is greater than the upper limit of the first time range.

3. The slag splashing method for protecting the converter according to claim 2, characterized in that, The determination of the oxygen lance position based on the splashing duration and splashing index includes: If the slag splashing index is less than a preset third threshold or the slag splashing duration is greater than a preset fourth threshold, the oxygen lance is controlled to stop releasing nitrogen and the slag splashing ends. The third threshold is less than the second threshold, and the fourth threshold is greater than the upper limit of the second duration range.

4. The slag splashing method for protecting the converter according to claim 1, characterized in that, The determination of the slag splashing index includes: Obtain an image of the converter furnace opening; Based on the converter furnace mouth image, the slag splashing particle distribution frequency and slag particle diameter dispersion index within a certain particle size range are obtained; The slag splashing index is obtained based on the slag particle distribution frequency within a certain particle size range and the slag particle diameter dispersion index.

5. The slag splashing method for protecting the converter according to claim 1, characterized in that, Determining the type and amount of slag conditioner includes: In response to the slag splashing activation signal, information about the smelting process is acquired; Based on the smelting process information, the type and amount of the slag conditioner are obtained.

6. The slag splashing method for protecting the converter according to claim 5, characterized in that, include: The smelting process information includes the steel grade produced by the converter, slag composition, final oxygen content, and molten steel temperature.

7. The slag splashing method for protecting the converter according to claim 1, characterized in that, include: The first duration range includes the 0th to 150th seconds of the slag splashing duration.

8. A slag splashing protection device for a converter, characterized in that, include: The slag conditioner determination unit is used to determine the type and amount of slag conditioner to be added; The first control unit is used to control the oxygen lance to move to the nitrogen opening point and start releasing nitrogen gas; An index determination unit is used to determine the slag splashing index, which measures the size and uniformity of slag particles splashed in the converter. The second control unit is used to control the oxygen lance to move to the lowest slag splashing position and to control the feeding device to add the slag conditioner to the converter. The lance position adjustment unit is used to determine the oxygen lance position based on the slag splashing time and the slag splashing index, including: if the slag splashing time is within a preset first time range, and if the slag splashing index is greater than a preset first threshold, controlling the oxygen lance to move to the highest slag splashing position; if the slag splashing index is not greater than a preset second threshold, controlling the oxygen lance to move to the middle slag splashing position, wherein the first threshold is greater than the second threshold.

9. An electronic device, characterized in that, include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements the method of any one of claims 1-7.

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