Converter blowing control method and device, storage medium and electronic equipment
By calculating the target oxygen transfer rate and rationally allocating the nitrogen-oxygen ratio, a nitrogen-oxygen composite blowing strategy was adopted to solve the problems of slag overflow and splashing in converter blowing, achieving efficient smelting and stable control, and improving metal yield.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- BEIJING SHOUGANG CO LTD
- Filing Date
- 2026-04-20
- Publication Date
- 2026-07-31
AI Technical Summary
In the process of high solid waste ratio in converter blowing, the high content of FeO and Fe2O3 in metallurgical solid waste leads to enhanced oxidation of the molten pool, which can easily cause slag overflow and splashing accidents. Traditional control methods are difficult to balance efficient smelting and stable control.
By calculating the target oxygen transfer rate and rationally allocating the nitrogen-oxygen ratio, a nitrogen-oxygen combined blowing strategy is adopted, including nitrogen-oxygen combined blowing and nitrogen pulse blowing, to control the oxygen flow rate and nitrogen-assisted jet and reduce the probability of slag overflow and splashing.
It achieves efficient smelting and stable control, reduces the probability of slag spillage and splashing, increases metal yield, and improves the safety and efficiency of the smelting process.
Smart Images
Figure CN122484384A_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of metallurgical production technology, and in particular relates to a converter blowing control method, device, storage medium and electronic equipment. Background Technology
[0002] During the process of converter blowing of raw materials with a high solid waste ratio, the high content of FeO and Fe2O3 in metallurgical solid waste can easily lead to enhanced oxidation of the molten pool. In the early stage of blowing, FeO in the slag rises rapidly, the carbon-oxygen reaction intensifies, and this can lead to slag overflow or even splashing accidents.
[0003] Traditional control methods typically employ measures such as reducing oxygen flow rate and lowering the oxygen lance position to suppress the rapid accumulation of FeO. However, reducing oxygen flow rate weakens the stirring intensity of the molten pool, while lowering the lance position causes physical erosion of the oxygen lance head by steel slag. Traditional control methods struggle to simultaneously meet the demands of efficient smelting and stable control. Summary of the Invention
[0004] The embodiments of this application provide a converter blowing control method, device, storage medium and electronic equipment, which can calculate the target oxygen transfer rate to rationally allocate the nitrogen-oxygen ratio, thereby adopting a nitrogen-oxygen composite blowing strategy, reducing the probability of slag overflow and splashing, and achieving efficient smelting and stable control.
[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] According to a first aspect of the embodiments of this application, a converter blowing control method is provided, comprising:
[0007] Obtain the basic production parameters of the target smelting furnace and determine the corresponding target oxygen transfer rate based on the basic production parameters; among which, the basic production parameters include the mass of newly added solid waste, the proportion of iron oxides in the newly added solid waste, the degree of oxidation of solid waste, the blowing time and the initial temperature of molten iron; The required nitrogen-oxygen ratio is determined based on the target oxygen transfer rate, and the target nitrogen supply intensity and target oxygen supply intensity are determined based on the total gas supply intensity and the nitrogen-oxygen ratio. Based on the target nitrogen supply intensity and target oxygen supply intensity, after the first preset time for nitrogen-oxygen composite blowing, based on the preset nitrogen supply intensity, the second preset time for nitrogen pulse blowing is carried out.
[0008] In some embodiments of this application, based on the foregoing scheme, determining the required nitrogen-oxygen ratio based on the target oxygen transfer rate includes: From each preset rate range, determine the target rate range to which the target oxygen transfer rate belongs; The nitrogen-oxygen ratio bound to the target rate range is determined as the nitrogen-oxygen ratio that needs to be allocated.
[0009] In some embodiments of this application, based on the aforementioned scheme, when the target rate range is not less than 0 kg / s and not greater than 2 kg / s, the nitrogen-oxygen ratio is 0:1; when the target rate range is greater than 2 kg / s and not greater than 4 kg / s, the nitrogen-oxygen ratio is 1:3; and when the target rate range is greater than 4 kg / s, the nitrogen-oxygen ratio is 1:2.
[0010] In some embodiments of this application, based on the foregoing scheme, the corresponding target oxygen transfer rate is determined based on basic production parameters, including: The solid waste ratio is determined based on basic production parameters; If the proportion of solid waste is not less than the preset proportion threshold, the corresponding target oxygen transfer rate is determined based on the production parameters.
[0011] In some embodiments of this application, based on the foregoing scheme, the corresponding target oxygen transfer rate is determined based on basic production parameters, including: The initial oxygen transfer rate is determined based on the mass of newly added solid waste, the proportion of iron oxides in the newly added solid waste, the degree of oxidation of solid waste, and the blowing time. The temperature activity coefficient is determined based on the initial temperature of the molten iron. The product of the initial oxygen transfer rate and the temperature activity coefficient is determined as the corresponding target oxygen transfer rate.
[0012] In some embodiments of this application, based on the aforementioned scheme, and based on the mass of newly added solid waste, the proportion of iron oxides in the newly added solid waste, the degree of oxidation of the solid waste, and the blowing time, the initial oxygen transfer rate is determined, including: The total amount of active oxygen is determined by the product of the newly added solid waste mass, the proportion of iron oxides in the newly added solid waste, and the degree of oxidation of the solid waste. The ratio of the total amount of active oxygen to the blowing time is determined as the initial oxygen transfer rate.
[0013] In some embodiments of this application, based on the foregoing scheme and the initial temperature of the molten iron, the temperature activity coefficient is determined, including: The difference between the initial temperature of molten iron and the reference temperature of molten iron is defined as the temperature deviation. The ratio of the temperature deviation to the initial temperature of the cycad is determined as the relative temperature difference coefficient. The temperature activity coefficient is determined based on the relative temperature difference coefficient.
[0014] According to a second aspect of the embodiments of this application, a converter blowing control device is provided, comprising: The oxygen transfer rate determination module is used to obtain the basic production parameters of the target smelting furnace and determine the corresponding target oxygen transfer rate based on the basic production parameters. The basic production parameters include the mass of newly added solid waste, the proportion of iron oxides in the newly added solid waste, the degree of oxidation of solid waste, the blowing time and the initial temperature of molten iron. The nitrogen-oxygen ratio determination module is used to determine the nitrogen-oxygen ratio to be allocated based on the target oxygen transfer rate, and to determine the target nitrogen supply intensity and target oxygen supply intensity based on the total gas supply intensity and the nitrogen-oxygen ratio. The blowing control module is used to perform nitrogen-oxygen composite blowing for a first preset time based on the target nitrogen supply intensity and the target oxygen supply intensity, and then perform nitrogen pulse blowing for a second preset time based on the preset nitrogen supply intensity.
[0015] According to a third aspect of the embodiments of this application, a computer-readable storage medium is provided, which stores computer program instructions that, when loaded and executed by a processor, implement the steps of the converter blowing control method as described in any of the first aspects.
[0016] According to a fourth aspect of the embodiments of this application, an electronic device is provided, including a processor and a memory, the memory storing computer program instructions executable by the processor, wherein when the processor executes the computer program instructions, it implements the steps of the converter blowing control method as described in any of the first aspects.
[0017] According to a fifth aspect of the embodiments of this application, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps of the converter blowing control method as described in any of the first aspects.
[0018] In this application, basic production parameters for the target smelting furnace are obtained, and a corresponding target oxygen transfer rate is determined based on these parameters. These basic production parameters include the mass of newly added solid waste, the proportion of iron oxides in the newly added solid waste, the degree of oxidation of the solid waste, the blowing time, and the initial temperature of the molten iron. The required nitrogen-oxygen ratio is determined based on the target oxygen transfer rate, and the target nitrogen supply intensity and target oxygen supply intensity are determined based on the total gas supply intensity and the nitrogen-oxygen ratio. After a first preset time for nitrogen-oxygen combined blowing based on the target nitrogen supply intensity and target oxygen supply intensity, a second preset time for nitrogen pulse blowing is performed based on the preset nitrogen supply intensity. The technical solution provided in this application allows for the calculation of the target oxygen transfer rate to rationally allocate the nitrogen-oxygen ratio, thereby adopting a nitrogen-oxygen combined blowing strategy, reducing the probability of slag splashing, and achieving efficient smelting and stable control.
[0019] 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
[0020] 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 of the converter blowing control method in an embodiment of this application is shown; Figure 2 A flowchart illustrating the determination of the nitrogen-oxygen ratio in an embodiment of this application is shown; Figure 3 A flowchart illustrating the determination of the target oxygen transfer rate in an embodiment of this application is shown; Figure 4 Another flowchart illustrating the determination of the target oxygen transfer rate in an embodiment of this application is shown; Figure 5 Another flowchart of the converter blowing control method in the embodiments of this application is shown; Figure 6 A block diagram of a converter blowing control device in an embodiment of this application is shown; Figure 7 A schematic diagram of the structure of an electronic device in an embodiment of this application is shown. Detailed Implementation
[0021] 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 some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0022] 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.
[0023] 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 network and / or processor devices and / or microcontroller devices.
[0024] 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.
[0025] In one exemplary embodiment, refer to Figure 1 The flowchart of the converter blowing control method in the embodiments of this application is shown below, and is described in detail below: Step 101: Obtain the basic production parameters of the target smelting furnace and determine the corresponding target oxygen transfer rate based on the basic production parameters.
[0026] The target smelting furnace refers to the smelting furnace to be controlled. Before the official start of production, the basic production parameters of the target smelting furnace are obtained, including but not limited to the mass of newly added solid waste, the proportion of iron oxides in the newly added solid waste, the degree of oxidation of solid waste, the blowing time and the initial temperature of molten iron. The degree of oxidation of solid waste can be set to 0.22-0.30, and the blowing time can be set to 600-900s. Then, the target oxygen transfer rate of the target smelting furnace is calculated based on the basic production parameters.
[0027] Optionally, based on the melting law of metallurgical solid waste, the correlation between basic production parameters and target oxygen transfer rate is summarized, the formula for solid waste oxygen transfer rate is determined, and the basic production parameters are substituted into the solid waste oxygen transfer rate formula to obtain the target oxygen transfer rate.
[0028] Optionally, the basic production parameters and target oxygen transfer rates corresponding to multiple historical smelting furnaces can be recorded to create tabular data. Then, the tabular data can be searched before formal production begins to determine the target oxygen transfer rate for the target smelting furnace.
[0029] Step 102: Determine the required nitrogen-oxygen ratio based on the target oxygen transfer rate, and determine the target nitrogen supply intensity and target oxygen supply intensity based on the total gas supply intensity and the nitrogen-oxygen ratio.
[0030] Different target oxygen transfer rates correspond to different nitrogen-oxygen ratios. The nitrogen-oxygen ratio increases with the increase of the target oxygen transfer rate. That is, the higher the target oxygen transfer rate, the greater the proportion of nitrogen in the corresponding nitrogen-oxygen ratio, thereby reducing the purity of oxygen and reducing the probability of overflow and splashing.
[0031] Based on the total gas supply intensity and the nitrogen-oxygen ratio, the target nitrogen supply intensity and target oxygen supply intensity can then be calculated. The total gas supply intensity can be set to 3.2-3.5 m³ / s. 3 / (min·t). For example, the total gas supply intensity is 3.3m³. 3With a nitrogen-to-oxygen ratio of 1:3, the calculated target nitrogen supply intensity is 0.825 m³ / (min·t). 3 / (min·t), the target oxygen supply intensity is 2.475m 3 / (min·t).
[0032] Step 103: After performing a first preset time for nitrogen-oxygen composite blowing based on the target nitrogen supply intensity and the target oxygen supply intensity, perform a second preset time for nitrogen pulse blowing based on the preset nitrogen supply intensity.
[0033] The smelting process is divided into a decarburization and oxygen control period and a slag overflow suppression period. After the formal start of production, a nitrogen-oxygen composite blowing strategy is adopted in the decarburization and oxygen control period, namely a nitrogen-oxygen synergistic blowing mode with nitrogen-assisted jet. In the slag overflow suppression period, a nitrogen pulse blowing strategy is adopted to promote the discharge of CO gas in the foam slag, balance the pressure inside and outside the furnace, and simultaneously increase the oxygen flow rate.
[0034] Specifically, during the decarbonization and oxygen control period, a first preset time for nitrogen-oxygen combined blowing is conducted based on the target nitrogen and oxygen supply intensities. This first preset time can be set to 5 minutes. Then, during the slag overflow suppression period, a second preset time for nitrogen pulse blowing is conducted based on the preset nitrogen supply intensities. This second preset time can be set to 2 minutes, with a single pulse duration of 3 seconds. The preset nitrogen supply intensities can be set to 0.5 m. 3 / (min·t).
[0035] In this application, basic production parameters for the target smelting furnace are obtained, and a corresponding target oxygen transfer rate is determined based on these parameters. These basic production parameters include the mass of newly added solid waste, the proportion of iron oxides in the newly added solid waste, the degree of oxidation of the solid waste, the blowing time, and the initial temperature of the molten iron. The required nitrogen-oxygen ratio is determined based on the target oxygen transfer rate, and the target nitrogen supply intensity and target oxygen supply intensity are determined based on the total gas supply intensity and the nitrogen-oxygen ratio. After a first preset time for nitrogen-oxygen combined blowing based on the target nitrogen supply intensity and target oxygen supply intensity, a second preset time for nitrogen pulse blowing is performed based on the preset nitrogen supply intensity. The technical solution provided in this application allows for the calculation of the target oxygen transfer rate to rationally allocate the nitrogen-oxygen ratio, thereby adopting a nitrogen-oxygen combined blowing strategy, reducing the probability of slag splashing, and achieving efficient smelting and stable control.
[0036] Based on the above embodiments, in an exemplary embodiment, see [link to example]. Figure 2 This illustrates the method for determining the nitrogen-oxygen ratio in embodiments of this application, specifically including: Step 201: Determine the target rate interval to which the target oxygen transfer rate belongs from each preset rate interval.
[0037] Based on production experience, multiple preset rate ranges are divided, and each preset rate range is bound to a nitrogen-oxygen ratio. Different preset rate ranges are bound to different nitrogen-oxygen ratios, so that the higher the oxygen transfer rate corresponding to the preset rate range, the higher the nitrogen content in the bound nitrogen-oxygen ratio. In this way, the preset rate range to which the target oxygen transfer rate belongs is determined and used as the target rate range.
[0038] Step 202: Determine the nitrogen-oxygen ratio bound to the target rate range as the nitrogen-oxygen ratio to be allocated.
[0039] Optionally, as shown in the table below, when the target rate range is not less than 0 kg / s and not greater than 2 kg / s, the nitrogen-oxygen ratio is 0:1; when the target rate range is greater than 2 kg / s and not greater than 4 kg / s, the nitrogen-oxygen ratio is 1:3; and when the target rate range is greater than 4 kg / s, the nitrogen-oxygen ratio is 1:2.
[0040]
[0041] In this application, multiple preset rate intervals are defined, and each preset rate interval is bound to a corresponding nitrogen-oxygen ratio. When calculating the target oxygen transfer rate, the bound nitrogen-oxygen ratio can be directly obtained, thereby rationally allocating the nitrogen-oxygen ratio. When the target oxygen transfer rate is high, a higher amount of nitrogen is allocated, effectively reducing the probability of overflow and splashing, while maintaining reaction efficiency.
[0042] Based on the above embodiments, in an exemplary embodiment, see [link to example]. Figure 3 This illustrates a method for determining the target oxygen transfer rate in an embodiment of this application, specifically including: Step 301: Determine the solid waste ratio based on basic production parameters.
[0043] The mass of newly added scrap steel, newly added solid waste, and newly added molten iron are determined, and the sum of these masses is the total loading amount. The ratio of the newly added solid waste mass to the total loading amount is then determined as the solid waste ratio.
[0044] Step 302: If the solid waste ratio is not less than the preset ratio threshold, then the corresponding target oxygen transfer rate is determined based on the basic production parameters.
[0045] The preset ratio threshold can be set to 10%. When the solid waste ratio is not less than 10%, it indicates that the high solid waste ratio scenario is met. The converter blowing control method provided in this application is adopted, and the target oxygen transfer rate is further determined based on the basic production parameters. When the solid waste ratio is less than 10%, it indicates that the high solid waste ratio scenario is not met. The converter blowing control method can be omitted, and the conventional control strategy can be directly adopted.
[0046] In this application, the solid waste ratio is calculated, and the target oxygen transfer rate is calculated in the high solid waste ratio scenario. The converter blowing control method provided in this application can analyze the applicable scenarios and fit the actual production application.
[0047] Based on the above embodiments, in an exemplary embodiment, see [link to example]. Figure 4 This illustrates a method for determining the target oxygen transfer rate in an embodiment of this application, specifically including: Step 401: Determine the initial oxygen transfer rate based on the mass of the newly added solid waste, the proportion of iron oxides in the newly added solid waste, the degree of oxidation of the solid waste, and the blowing time.
[0048] Among them, the quality of newly added solid waste, the proportion of iron oxides in newly added solid waste, the degree of oxidation of solid waste and the blowing time can all be obtained based on actual production needs. The degree of oxidation of solid waste can be set to 0.22-0.30 and the blowing time can be set to 600-900s.
[0049] Optionally, the total amount of active oxygen can be determined by the product of the mass of newly added solid waste, the proportion of iron oxides in the newly added solid waste, and the degree of oxidation of the solid waste; the ratio of the total amount of active oxygen to the blowing time can be determined as the initial oxygen transfer rate.
[0050] The mass of newly added solid waste is expressed as m 固废 The proportion of iron oxides in the newly added solid waste is represented by k, the degree of oxidation of solid waste is represented by α, the blowing time is represented by t, and the total amount of active oxygen is represented by m. 固废 ×k×α, the initial oxygen transfer rate is expressed as (m 固废 ×k×α) / t.
[0051] Step 402: Determine the temperature activity coefficient based on the initial temperature of the molten iron.
[0052] Determine the reference temperature of molten iron under standard operating conditions. When the initial temperature of molten iron is equal to the reference temperature, the temperature activity coefficient is equal to 1. When the initial temperature of molten iron is greater than the reference temperature, the temperature activity coefficient is greater than 1, indicating that the reaction rate is faster. When the temperature of molten iron is less than the reference temperature, the temperature activity coefficient is less than 1, indicating that the reaction rate is slower.
[0053] Optionally, the difference between the initial temperature of the molten iron and the reference temperature of the molten iron is determined as the temperature deviation; the ratio of the temperature deviation to the initial temperature of the molten iron tree is determined as the relative temperature difference coefficient; and the temperature activity coefficient is determined based on the relative temperature difference coefficient.
[0054] The initial temperature of molten iron is expressed as T. 初始 The reference temperature for molten iron can be set to 1350℃, and the temperature deviation can be expressed as T. 初始 -1350 (°C), the relative temperature coefficient is expressed as (T) 初始 -1350) / T 初始The temperature activity coefficient is expressed as 1 + (T) 初始 -1350) / T 初始 .
[0055] Step 403: The product of the initial oxygen transfer rate and the temperature activity coefficient is determined as the corresponding target oxygen transfer rate.
[0056] Optionally, the target oxygen transfer rate can be calculated using the following formula: ; Where G0 is the target oxygen transfer rate (kg / s), msolid is the mass of newly added solid waste (kg), k is the percentage of iron oxides in the newly added solid waste (%), α is the degree of solid waste oxidation, t is the blowing time (s), and T0 is the target oxygen transfer rate (kg / s). 初始 The initial temperature of the molten iron (°C).
[0057] In this application, the target oxygen transfer rate is calculated one by one based on the basic production parameters, which can be applied to different smelting furnaces, accurately quantify the target oxygen transfer rate, and improve the accuracy and reliability of converter blowing control.
[0058] Based on the above embodiments, the following specific embodiments are provided: For example, by adding 10 tons of scrap steel, 25 tons of metallurgical solid waste, and 205 tons of iron, the calculated target oxygen transfer rate is 2.2 kg / s, the nitrogen-oxygen ratio is 1:3, and the target nitrogen supply intensity is 0.825 m³ / s. 3 / (min·t), target oxygen supply intensity 2.475m 3 / (min·t), after 5 minutes of nitrogen-oxygen combined blowing, nitrogen pulse blowing is performed for 2 minutes, with a single pulse time domain of 3 seconds and a preset nitrogen supply intensity of 0.5m. 3 / (min·t), and simultaneously increase the oxygen flow rate.
[0059] For example, adding 12t of scrap steel, 30t of metallurgical solid waste, and 210t of iron, the calculated target oxygen transfer rate is 2.4kg / s, the nitrogen-oxygen ratio is 1:3, and the target nitrogen supply intensity is 0.825m. 3 / (min·t), target oxygen supply intensity 2.475m 3 / (min·t), after 5 minutes of nitrogen-oxygen combined blowing, nitrogen pulse blowing is performed for 1.9 minutes, with a single pulse time domain of 4 seconds and a preset nitrogen supply intensity of 0.6m. 3 / (min·t), and simultaneously increase the oxygen flow rate.
[0060] For example, adding 3 tons of scrap steel, 40 tons of metallurgical solid waste, and 205 tons of iron, the calculated target oxygen transfer rate is 3.1 kg / s, the nitrogen-oxygen ratio is 1:3, and the target nitrogen supply intensity is 0.825 m³ / s. 3 / (min·t), target oxygen supply intensity 2.475m3 / (min·t), after 5.1 minutes of nitrogen-oxygen combined blowing, nitrogen pulse blowing is performed for 2.1 minutes, with a single pulse time domain of 4 seconds and a preset nitrogen supply intensity of 0.5m. 3 / (min·t), and simultaneously increase the oxygen flow rate.
[0061] In this application, the slag ratio of nitrogen-oxygen combined blowing is reduced from the conventional 28% to less than 15%, the slag ratio of nitrogen pulse blowing is reduced from the conventional 20% to less than 8%, and the final metal yield is increased from the conventional 92% to more than 92.5%, achieving efficient smelting and stable control.
[0062] Based on the above embodiments, in an exemplary embodiment, see [link to example]. Figure 5 Another flowchart of the converter blowing control method in this application embodiment is shown below, which is described in detail below: Step 501: Obtain the basic production parameters of the target smelting furnace and determine the solid waste ratio based on the basic production parameters.
[0063] Step 502: If the solid waste ratio is not less than the preset ratio threshold, then determine the corresponding target oxygen transfer rate based on the production parameters.
[0064] The basic production parameters include the quality of newly added solid waste, the proportion of iron oxides in the newly added solid waste, the degree of oxidation of solid waste, the blowing time, and the initial temperature of molten iron.
[0065] Step 503: Determine the target rate range to which the target oxygen transfer rate belongs from each preset rate range.
[0066] Step 504: Determine the nitrogen-oxygen ratio bound to the target rate range as the nitrogen-oxygen ratio to be allocated.
[0067] Step 505: Determine the required nitrogen-oxygen ratio based on the target oxygen transfer rate, and determine the target nitrogen supply intensity and target oxygen supply intensity based on the total gas supply intensity and the nitrogen-oxygen ratio.
[0068] Step 506: After performing a first preset time for nitrogen-oxygen composite blowing based on the target nitrogen supply intensity and the target oxygen supply intensity, perform a second preset time for nitrogen pulse blowing based on the preset nitrogen supply intensity.
[0069] In this application, the target oxygen transfer rate can be calculated to rationally allocate the nitrogen-oxygen ratio, thereby adopting a nitrogen-oxygen composite blowing strategy to reduce the probability of slag overflow and splashing, and achieve efficient smelting and stable control.
[0070] The following describes an embodiment of the apparatus described in this application, which can be used to execute the converter blowing control method in the above embodiments of this application. For details not disclosed in the apparatus embodiments of this application, please refer to the embodiments of the converter blowing control method described above in this application.
[0071] See Figure 6 A block diagram of the converter blowing control device 600 in an embodiment of this application is shown, which specifically includes: The oxygen transfer rate determination module 601 is used to obtain the basic production parameters of the target smelting furnace and determine the corresponding target oxygen transfer rate based on the production parameters; among which, the basic production parameters include the mass of newly added solid waste, the proportion of iron oxides in the newly added solid waste, the degree of oxidation of solid waste, the blowing time and the initial temperature of molten iron. The nitrogen-oxygen ratio determination module 602 is used to determine the nitrogen-oxygen ratio to be allocated based on the target oxygen transfer rate, and to determine the target nitrogen supply intensity and the target oxygen supply intensity based on the total gas supply intensity and the nitrogen-oxygen ratio. The blowing control module 603 is used to perform nitrogen-oxygen composite blowing for a first preset time based on the target nitrogen supply intensity and the target oxygen supply intensity, and then perform nitrogen pulse blowing for a second preset time based on the preset nitrogen supply intensity.
[0072] In an exemplary embodiment, based on the above embodiments, the nitrogen-oxygen ratio determination module 602 includes: The interval determination unit is used to determine the target rate interval to which the target oxygen transfer rate belongs from each preset rate interval. The nitrogen-oxygen ratio determination unit is used to determine the nitrogen-oxygen ratio bound to the target rate range as the nitrogen-oxygen ratio to be allocated.
[0073] In an exemplary embodiment, based on the above embodiment, when the target rate range is not less than 0 kg / s and not greater than 2 kg / s, the nitrogen-oxygen ratio is 0:1; when the target rate range is greater than 2 kg / s and not greater than 4 kg / s, the nitrogen-oxygen ratio is 1:3; and when the target rate range is greater than 4 kg / s, the nitrogen-oxygen ratio is 1:2.
[0074] In one exemplary embodiment, based on the above embodiments, the oxygen transfer rate determination module 601 includes: The solid waste ratio determination unit is used to determine the solid waste ratio based on basic production parameters. The oxygen transfer rate calculation unit is used to determine the corresponding target oxygen transfer rate based on production parameters if the solid waste ratio is not less than a preset ratio threshold.
[0075] In an exemplary embodiment, based on the above embodiments, the oxygen transfer rate calculation unit is specifically used to determine the initial oxygen transfer rate based on the mass of newly added solid waste, the proportion of iron oxides in the newly added solid waste, the degree of oxidation of solid waste and the blowing time; to determine the temperature activity coefficient based on the initial temperature of molten iron; and to determine the corresponding target oxygen transfer rate by multiplying the initial oxygen transfer rate and the temperature activity coefficient.
[0076] In an exemplary embodiment, based on the above embodiments, the oxygen transfer rate calculation unit is specifically used to determine the total amount of active oxygen by multiplying the mass of newly added solid waste, the proportion of iron oxides in the newly added solid waste, and the degree of oxidation of the solid waste; and to determine the initial oxygen transfer rate by the ratio of the total amount of active oxygen to the blowing time.
[0077] In an exemplary embodiment, based on the above embodiments, the oxygen transfer rate calculation unit is specifically used to determine the difference between the initial temperature of molten iron and the reference temperature of molten iron as a temperature deviation; to determine the ratio of the temperature deviation to the initial temperature of the molten iron tree as a relative temperature difference coefficient; and to determine the temperature activity coefficient based on the relative temperature difference coefficient.
[0078] Based on the same inventive concept, embodiments of this application provide a computer-readable storage medium storing computer program instructions. When the computer program instructions are loaded and executed by a processor, they implement the steps of the converter blowing control method described above.
[0079] Based on the same inventive concept, this application provides an electronic device, see [link to relevant documentation]. Figure 7 The diagram shows a schematic of the structure of an electronic device in an embodiment of this application. The electronic device includes one or more memories 704, one or more processors 702, and at least one computer program stored in the memory 704 and executable on the processor 702. When the processor 702 executes the computer program, it implements the steps of the converter blowing control method described above.
[0080] The bus architecture (represented by bus 700) includes any number of interconnected buses and bridges, linking various circuits including one or more processors represented by processor 702 and memory represented by memory 704. Bus 700 can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. Bus interface 705 provides an interface between bus 700 and receiver 701 and transmitter 703. Receiver 701 and transmitter 703 can be the same element, a transceiver, providing a unit for communicating with various other devices over a transmission medium. Processor 702 is responsible for managing bus 700 and general processing, while memory 704 can be used to store data used by processor 702 during operation.
[0081] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may 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 application and the appended claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hardwired, or any combination thereof. Furthermore, the functional units may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit.
[0082] Based on the same inventive concept, this application provides a computer program product, including a computer program, which, when executed by a processor, implements the steps of the converter blowing control method described above.
[0083] 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 instance, 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 coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.
[0084] 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; 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.
[0085] 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 application, 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 described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing computer program instructions, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.
[0086] 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 converter blowing control method, characterized in that, The method includes: The basic production parameters of the target smelting furnace are obtained, and the corresponding target oxygen transfer rate is determined based on the basic production parameters; wherein, the basic production parameters include the mass of newly added solid waste, the proportion of iron oxides in the newly added solid waste, the degree of oxidation of solid waste, the blowing time and the initial temperature of molten iron; The required nitrogen-oxygen ratio is determined based on the target oxygen transfer rate, and the target nitrogen supply intensity and target oxygen supply intensity are determined based on the total gas supply intensity and the nitrogen-oxygen ratio. Based on the target nitrogen supply intensity and the target oxygen supply intensity, after a first preset time of nitrogen-oxygen composite blowing, a second preset time of nitrogen pulse blowing is performed based on the preset nitrogen supply intensity.
2. The method according to claim 1, characterized in that, The step of determining the required nitrogen-oxygen ratio based on the target oxygen transfer rate includes: From each preset rate range, determine the target rate range to which the target oxygen transfer rate belongs; The nitrogen-oxygen ratio bound to the target rate range is determined as the nitrogen-oxygen ratio that needs to be allocated.
3. The method according to claim 2, characterized in that, When the target rate range is not less than 0 kg / s and not greater than 2 kg / s, the nitrogen-oxygen ratio is 0:1; when the target rate range is greater than 2 kg / s and not greater than 4 kg / s, the nitrogen-oxygen ratio is 1:3; when the target rate range is greater than 4 kg / s, the nitrogen-oxygen ratio is 1:
2.
4. The method according to claim 1, characterized in that, The determination of the target oxygen transfer rate based on the basic production parameters includes: The solid waste ratio is determined based on the aforementioned basic production parameters; If the solid waste ratio is not less than a preset ratio threshold, the corresponding target oxygen transfer rate is determined based on the basic production parameters.
5. The method according to claim 1, characterized in that, The determination of the target oxygen transfer rate based on the basic production parameters includes: The initial oxygen transfer rate is determined based on the mass of the newly added solid waste, the proportion of iron oxides in the newly added solid waste, the degree of oxidation of the solid waste, and the blowing time. The temperature activity coefficient is determined based on the initial temperature of the molten iron. The product of the initial oxygen transfer rate and the temperature activity coefficient is determined as the corresponding target oxygen transfer rate.
6. The method according to claim 5, characterized in that, The determination of the initial oxygen transfer rate based on the mass of the newly added solid waste, the proportion of iron oxides in the newly added solid waste, the degree of oxidation of the solid waste, and the blowing time includes: The total amount of active oxygen is determined by the product of the mass of the newly added solid waste, the proportion of iron oxides in the newly added solid waste, and the degree of oxidation of the solid waste. The ratio of the total amount of active oxygen to the blowing time is determined as the initial oxygen transfer rate.
7. The method according to claim 5, characterized in that, The determination of the temperature activity coefficient based on the initial temperature of the molten iron includes: The difference between the initial temperature of the molten iron and the reference temperature of the molten iron is defined as the temperature deviation. The ratio of the temperature deviation to the initial temperature of the iron tree is determined as the relative temperature difference coefficient. The temperature activity coefficient is determined based on the relative temperature difference coefficient.
8. A converter blowing control device, characterized in that, The device includes: The oxygen transfer rate determination module is used to obtain the basic production parameters of the target smelting furnace and determine the corresponding target oxygen transfer rate based on the basic production parameters; wherein, the basic production parameters include the mass of newly added solid waste, the proportion of iron oxides in the newly added solid waste, the degree of oxidation of solid waste, the blowing time and the initial temperature of molten iron. The nitrogen-oxygen ratio determination module is used to determine the nitrogen-oxygen ratio to be allocated based on the target oxygen transfer rate, and to determine the target nitrogen supply intensity and the target oxygen supply intensity based on the total gas supply intensity and the nitrogen-oxygen ratio. The blowing control module is used to perform nitrogen-oxygen composite blowing for a first preset time based on the target nitrogen supply intensity and the target oxygen supply intensity, and then perform nitrogen pulse blowing for a second preset time based on the preset nitrogen supply intensity.
9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer program instructions, which, when loaded and executed by a processor, perform the operations performed by the method as described in any one of claims 1 to 7.
10. An electronic device comprising a processor and a memory, characterized in that, The memory stores computer program instructions that can be executed by the processor, and when the processor executes the computer program instructions, it performs the operation as described in any one of claims 1 to 7.