A blast furnace feeding system distribution method, device, equipment and medium

Abstract

The application discloses a blast furnace feeding system distribution method, device, equipment and medium, comprising: acquiring the actual distribution angle corresponding to the last batch of materials and the historical temperature curve corresponding to each point in the multiple points of the blast furnace top in the historical time period, and determining the historical temperature difference curve corresponding to the historical temperature difference value between each adjacent two historical temperature curves according to the distribution relationship between the corresponding historical temperature curves; when the absolute value of any historical temperature difference value on any historical temperature difference curve is greater than the preset temperature difference value, the distribution angle of the next batch of materials is adjusted, and the next batch of materials is distributed according to the adjusted distribution angle. The application determines the relationship between the absolute value of the temperature difference value corresponding to each same time point between the adjacent curves and the preset temperature difference value, and when the absolute value of at least one temperature difference value is greater than the preset temperature difference value, it is indicated that the coal gas flow is not stable in the blast furnace, and the preset distribution parameter needs to be adjusted.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of blast furnace smelting, and in particular to a blast furnace feeding system distribution method, device, equipment and medium. BACKGROUND

[0002] The raw materials for blast furnace ironmaking mainly include iron ore and coke, etc. With the development of blast furnace ironmaking technology, scrap steel has also gradually become one of the raw materials for blast furnace ironmaking. The advantage of using scrap steel for ironmaking is that it can effectively reduce the blast furnace fuel ratio and increase the blast furnace output.

[0003] The existing blast furnace feeding system is mainly designed according to the characteristics of raw materials such as iron ore and coke, and lacks a feeding system that is adapted to the characteristics of scrap steel. Moreover, when the existing blast furnace feeding system distributes materials into the blast furnace, it mainly distributes materials according to the characteristics of iron ore and coke. There is a lack of research on how to use the existing blast furnace feeding system to distribute materials when scrap steel is used as one of the distributed materials. If the distribution is not reasonable, it may not be possible to effectively reduce the blast furnace fuel ratio and increase the blast furnace output. Therefore, when scrap steel is used as one of the distributed materials, how to improve the rationality of the distribution is a problem that needs to be solved. SUMMARY

[0004] The present application provides a blast furnace feeding system distribution method, device, equipment and medium, which solves the technical problem of low rationality of distribution when scrap steel is used as one of the distributed materials in the prior art, and achieves the technical effect of improving the rationality of distribution when scrap steel is used as one of the distributed materials.

[0005] In a first aspect, the present application provides a blast furnace feeding system distribution method, the method comprising:

[0006] obtaining an actual distribution angle of a previous batch of materials and a historical temperature curve corresponding to each point in a plurality of point positions of a blast furnace top in a historical time period, and determining a historical temperature difference curve corresponding to a historical temperature difference between each adjacent two historical temperature curves according to a distribution relationship between the historical temperature curves corresponding to the plurality of point positions respectively;

[0007] When the absolute value of any historical temperature difference on any historical temperature difference curve is greater than a preset temperature difference, adjusting the distribution angle of a next batch of materials, and controlling the next batch of materials to be distributed according to the adjusted distribution angle; wherein the adjusted distribution angle of the next batch of materials is different from the actual distribution angle of the previous batch of materials.

[0008] Further, before controlling the next batch of materials to be distributed, the method comprises:

[0009] The scrap steel and iron ore in the next batch of materials are filled into the raw material hoppers of the blast furnace feeding system according to a preset filling sequence, so that the scrap steel is distributed in the middle and lower parts of the raw material hoppers.

[0010] Further, before the next batch of materials is controlled to start filling, the method further comprises:

[0011] According to the mass of the scrap steel and the mass of the iron ore in the next batch of materials, the mass proportion of the scrap steel is determined.

[0012] When the mass proportion of the scrap steel is greater than the preset mass proportion, the mass of the scrap steel in the next batch of materials is adjusted so that the mass proportion of the scrap steel is less than or equal to the preset mass proportion.

[0013] Further, before the next batch of materials is controlled to start filling, the method further comprises:

[0014] The raw material filling quantity corresponding to each filling gear of the next batch of materials is obtained.

[0015] According to the raw material filling quantity corresponding to each filling gear of the next batch of materials and the density of the scrap steel in the next batch of materials, the fuel filling quantity corresponding to each filling gear of the next batch of materials is determined.

[0016] Further, before the next batch of materials is controlled to start filling, the method further comprises:

[0017] According to the mass and density of the scrap steel and the mass of the iron ore in the next batch of materials, the mass of the fuel in the next batch of materials is determined.

[0018] Further, adjusting the filling angle of the next batch of materials comprises:

[0019] The raw material filling angle of the outermost filling gear of the next batch of materials is adjusted to a first target raw material filling angle.

[0020] According to the first target raw material filling angle, the raw material filling angle and the fuel filling angle corresponding to each filling gear of the next batch of materials are determined.

[0021] Further, the method further comprises:

[0022] According to the target temperature curve corresponding to each point in the target time period during the filling process of the next batch of materials, it is determined whether the filling angle of the subsequent batch of materials needs to be adjusted.

[0023] In a second aspect, the application provides a blast furnace feeding system filling device, which comprises:

[0024] The temperature difference determination module is configured to acquire an actual distribution angle corresponding to a previous batch of material and a historical temperature curve corresponding to each point in a plurality of points of a blast furnace top in a historical time period, and determine a historical temperature difference curve corresponding to a historical temperature difference between each adjacent two historical temperature curves according to a distribution relationship between the historical temperature curves corresponding to the plurality of points respectively.

[0025] The distribution angle adjustment module is configured to adjust the distribution angle of a next batch of material when an absolute value of any historical temperature difference on any historical temperature difference curve is greater than a preset temperature difference, and control the next batch of material to be distributed according to the adjusted distribution angle; wherein the adjusted distribution angle of the next batch of material is different from the actual distribution angle of the previous batch of material.

[0026] In a third aspect, the present application provides an electronic device, comprising:

[0027] a processor;

[0028] a memory for storing processor-executable instructions;

[0029] The processor is configured to execute to implement the blast furnace feeding system distribution method provided in the first aspect.

[0030] In a fourth aspect, the present application provides a non-transitory computer-readable storage medium, when the instructions in the storage medium are executed by the processor of the electronic device, the electronic device can execute the blast furnace feeding system distribution method provided in the first aspect.

[0031] The one or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0032] The present application acquires an actual distribution angle corresponding to a previous batch of material and a historical temperature curve corresponding to each point in a plurality of points of a blast furnace top in a historical time period, and determines a historical temperature difference curve corresponding to a historical temperature difference between each adjacent two historical temperature curves according to a distribution relationship between the historical temperature curves corresponding to the plurality of points respectively; when an absolute value of any historical temperature difference on any historical temperature difference curve is greater than a preset temperature difference, the distribution angle of a next batch of material is adjusted, and the next batch of material is controlled to be distributed according to the adjusted distribution angle. The present application judges the absolute value of any historical temperature difference on any historical temperature difference curve and the preset temperature difference, judges whether the temperatures of the gas flows in each place in the blast furnace top are too different, when the absolute value of at least one temperature difference is greater than the preset temperature difference, it is indicated that the gas flow is not stable in the blast furnace, which is not conducive to the ironmaking reaction, the previous batch of material distribution is unreasonable, and the distribution angle of the next batch of material needs to be adjusted.

[0033] The application can quickly determine the target raw material cloth angle corresponding to the cloth position except the innermost cloth position, and the target fuel cloth angle corresponding to the multiple cloth positions except the innermost cloth position, by adjusting the raw material cloth angle of the outermost cloth position, and the relationship between the raw material cloth angle and the fuel cloth angle of each cloth position, and the relationship between the raw material cloth angles of each cloth position, thereby improving the efficiency of adjusting the cloth angle.

[0034] The application also determines whether the cloth rationality of the next batch of materials is improved by judging the relationship between any target temperature difference value on the target temperature difference curve and the preset temperature difference value according to the target temperature curve corresponding to each point in the target time period during the cloth process of the next batch of materials. When any target temperature difference value on the target temperature difference curve is less than or equal to the preset temperature difference value, it indicates that the corresponding coal gas flow of the next batch of materials is relatively stable, and the cloth rationality of the next batch of materials is improved, so that the cloth angle of the subsequent batch of materials does not need to be adjusted.

[0035] The application also controls the distribution position of the scrap steel of the next batch of materials in the raw material tank and the mass proportion of the scrap steel of the next batch of materials, so that the raw material tank is more smooth when discharging to the blast furnace, which is beneficial to the blast furnace smelting. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0037] Figure 1 A flowchart of a blast furnace feeding system cloth method provided by the application is shown in the figure;

[0038] Figure 2 A structural diagram of a certain blast furnace feeding system provided by the application is shown in the figure;

[0039] Figure 3 A top view diagram of the top of a certain blast furnace is shown in the figure;

[0040] Figure 4 A Figure 3 A diagram of the historical temperature curve of multiple points in the figure;

[0041] Figure 5 A Figure 4 A diagram of the historical temperature difference curve of curve f and curve g in the figure

[0042] Figure 6 A structural diagram of a blast furnace feeding system cloth device provided by the application is shown in the figure;

[0043] Figure 7 A structural schematic diagram of an electronic device is provided in the present application.

[0044] Reference signs

[0045] 1 - material tank, 2 - material chute, 3 - central throat. DETAILED DESCRIPTION

[0046] The embodiment of the present application provides a blast furnace feeding system material distribution method, and solves the technical problem of low rationality of material distribution when scrap steel is used as one of raw materials.

[0047] To solve the above technical problem, the technical scheme of the embodiment of the present application is as follows:

[0048] A blast furnace feeding system material distribution method, the method comprising: acquiring an actual material distribution angle corresponding to a previous batch of material and a historical temperature curve corresponding to each point in a plurality of points of a blast furnace top in a historical time period, and determining a historical temperature difference curve corresponding to a historical temperature difference between each adjacent two historical temperature curves according to a distribution relationship between the historical temperature curves corresponding to the plurality of points respectively; when an absolute value of any historical temperature difference on any historical temperature difference curve is greater than a preset temperature difference, adjusting a material distribution angle of a next batch of material, and controlling the next batch of material to be distributed according to the adjusted material distribution angle; wherein the adjusted material distribution angle of the next batch of material is different from the actual material distribution angle of the previous batch of material.

[0049] The present application acquires an actual material distribution angle corresponding to a previous batch of material and a historical temperature curve corresponding to each point in a plurality of points of a blast furnace top in a historical time period, and determines a historical temperature difference curve corresponding to a historical temperature difference between each adjacent two historical temperature curves according to a distribution relationship between the historical temperature curves corresponding to the plurality of points respectively; when an absolute value of any historical temperature difference on any historical temperature difference curve is greater than a preset temperature difference, adjusting a material distribution angle of a next batch of material, and controlling the next batch of material to be distributed according to the adjusted material distribution angle. The present application judges whether the temperatures of gas flows at all places in the blast furnace top are too different by judging the absolute value of any historical temperature difference on any historical temperature difference curve and the preset temperature difference, and when the absolute value of at least one temperature difference is greater than the preset temperature difference, it is indicated that the gas flow is not stable in the blast furnace, which is not conducive to ironmaking reaction, and the previous batch of material distribution is not reasonable, so the material distribution angle of the next batch of material needs to be adjusted.

[0050] The application can quickly determine the target raw material cloth angle corresponding to each cloth position except the innermost cloth position, and the target fuel cloth angle corresponding to each cloth position except the innermost cloth position, by adjusting the raw material cloth angle of the outermost cloth position, and the relationship between the raw material cloth angle and the fuel cloth angle of each cloth position, and the relationship between the raw material cloth angles of each cloth position, thereby improving the efficiency of adjusting the cloth angle.

[0051] The application also determines whether the cloth rationality of the next batch of materials is improved by judging the relationship between any target temperature difference on the target temperature difference curve and the preset temperature difference according to the target temperature curve corresponding to each point in the target time period during the cloth process of the next batch of materials. When any target temperature difference on the target temperature difference curve is less than or equal to the preset temperature difference, it means that the corresponding coal gas flow of the next batch of materials is relatively stable, and the rationality of the next batch of materials is improved. The cloth angle of the subsequent batch of materials does not need to be adjusted.

[0052] The application also controls the distribution position of the scrap steel of the next batch of materials in the raw material tank and the mass proportion of the scrap steel of the next batch of materials, so that the raw material tank is more smooth when discharging to the blast furnace, which is beneficial to the smelting of the blast furnace.

[0053] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in combination with the drawings in the specification and specific embodiments.

[0054] First of all, the term "and / or" appearing in this paper is only to describe the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, A and / or B can represent the existence of A alone, the existence of A and B together, and the existence of B alone. In addition, the character " / " in this paper generally represents an "or" relationship between the front and rear associated objects.

[0055] The application provides a blast furnace feeding system cloth method as shown in Figure 1 The application provides a blast furnace feeding system cloth method as shown in

[0056] Step S11, obtaining the actual cloth angle corresponding to the previous batch of materials and the historical temperature curve corresponding to each point in the historical time period of the top of the blast furnace, and determining the historical temperature difference curve corresponding to the historical temperature difference between each adjacent two historical temperature curves according to the distribution relationship between the historical temperature curves corresponding to each point.

[0057] Step S12, when the absolute value of any historical temperature difference on any historical temperature difference curve is greater than the preset temperature difference, the material distribution angle of the next batch of material is adjusted, and the next batch of material is distributed according to the adjusted material distribution angle; wherein the adjusted material distribution angle of the next batch of material is different from the actual material distribution angle of the previous batch of material.

[0058] Regarding step S11, the actual material distribution angle corresponding to the previous batch of material and the historical temperature curve corresponding to each point in the plurality of points of the blast furnace top in the historical time period are obtained, and the historical temperature difference curve corresponding to the historical temperature difference between each adjacent two historical temperature curves is determined according to the distribution relationship between the historical temperature curves corresponding to the plurality of points respectively.

[0059] Figure 2 The structure diagram of a blast furnace feeding system provided in the present application is shown in Figure 1 The blast furnace feeding system distribution method shown can be applied to the blast furnace feeding system shown in Figure 2 The blast furnace feeding system shown in

[0060] The blast furnace feeding system shown in Figure 2 may include a material tank 1, a material distribution chute 2 and a center throat pipe 3. The number of material tanks 1 in the blast furnace feeding system can be two or more, and the present application only takes two material tanks 1 as an example for illustration.

[0061] The left material tank 1 in Figure 2 is referred to as a raw material tank, and the right material tank 1 in the figure is referred to as a fuel tank (here, "left" and "right" are referred to as left and right in Figure 2 ), the raw material tank is used to store raw materials, and the raw materials can include scrap steel and iron ore; the fuel tank is used to store fuel, and the raw materials can include coke.

[0062] When distributing material to the blast furnace, the fuel tank needs to complete pressure equalization, so that the pressure of the fuel tank and the pressure of the blast furnace remain the same, and then the discharge valve of the fuel tank is opened, so that the fuel in the fuel tank enters the material distribution chute 2 through the center throat pipe 3, and the material distribution chute 2 rotates around the vertical center line P of the center throat pipe 3 while discharging the fuel into the blast furnace. After all the fuel in the fuel tank is discharged into the blast furnace, the discharge valve of the fuel tank is closed. After the discharge valve of the fuel tank is closed, the raw material tank can be controlled to complete pressure equalization, and then the discharge valve of the raw material tank is opened, so that the raw materials in the raw material tank enter the material distribution chute 2 through the center throat pipe 3, and the material distribution chute 2 rotates around the vertical center line P of the center throat pipe 3 while discharging the scrap steel and iron ore into the blast furnace. After the scrap steel and iron ore in the raw material tank are discharged into the blast furnace, the discharge valve of the raw material tank is closed.

[0063] It is understandable that closing the discharge valve of the fuel tank means that the fuel from the previous batch of materials has been distributed. After closing the discharge valve of the fuel tank, the feed valve of the fuel tank can be opened to continue to replenish the fuel tank with the next batch of materials.

[0064] After closing the discharge valve of the raw material tank, it means that the scrap steel and iron ore from the previous batch of materials have been distributed. After closing the discharge valve of the raw material tank, the feed valve of the raw material tank can be opened to continue to replenish the raw material tank with the scrap steel and iron ore of the next batch of materials.

[0065] The actual charging angle refers to the angle between the charging chute 2 and the vertical centerline of the central throat 3 when the raw materials or fuel are arranged in the blast furnace charging system. For example... Figure 2 In the diagram, the included angle Y between the vertical centerline P of the central throat 3 of the fabric chute 2 and the fabric angle is the fabric angle.

[0066] It should be noted that the blast furnace feeding system has multiple charging positions, each corresponding to a raw material charging angle and a fuel charging angle. The raw material charging angle is used to arrange coke and iron ore, while the fuel charging angle is used to arrange fuel. Furthermore, except for the innermost charging position, the raw material charging angle of each charging position is smaller than the corresponding fuel charging angle.

[0067] It is understandable that, except for the innermost fabric stop, because the angle of the raw material fabric at each fabric stop is smaller than the angle of the corresponding fuel fabric, the pattern formed by the fuel arranged through the same fabric stops can enclose the pattern formed by the raw material.

[0068] There are at least two points on the top of the blast furnace for obtaining temperature. After the first batch of materials is charged into the blast furnace, a large amount of gas flow will be generated and fill the top of the blast furnace. The historical temperature curve of the gas flow corresponding to each point can be obtained within a historical time period. The historical time period can be determined based on the reaction time of the fuel and raw materials of the previous batch of materials.

[0069] This application only illustrates four points. For example, Figure 3 This is a top view of the top of a blast furnace, with points F, G, H, and J shown in the figure. Figure 4 After the previous batch of materials was laid Figure 4 The historical temperature curves corresponding to points F, G, H, and J within 10 minutes are shown. Point F corresponds to curve f, point G to curve g, point H to curve h, and point J to curve j. Figure 5 The vertical axis represents temperature (T), and the horizontal axis represents time (t).

[0070] After the historical temperature curve corresponding to each point in the historical time period is obtained, the historical temperature difference curve corresponding to the historical temperature difference between each adjacent two historical temperature curves can be determined according to the distribution relationship between the historical temperature curves corresponding to the plurality of points.

[0071] The distribution relationship between the historical temperature curves corresponding to the plurality of points refers to the relative positions between the historical temperature curves, and the historical temperature difference curve corresponding to each adjacent two historical temperature curves can be determined according to the temperature difference at each same time point in the historical time period.

[0072] As shown in FIG. 2, when the time is 5:10, the temperature of the temperature curve f is 280℃, and the temperature of the temperature curve g is 252℃, the difference between the temperature curve f and the temperature curve g is 280℃-252℃=28℃. In the same way, the temperature difference at each same time point between the temperature curve f and the temperature curve g in 10 minutes is determined to form the historical temperature difference curve between the temperature curve f and the temperature curve g. Figure 5 As shown in FIG. 2, when the time is 5:10, the temperature of the temperature curve f is 280℃, and the temperature of the temperature curve g is 252℃, the difference between the temperature curve f and the temperature curve g is 280℃-252℃=28℃. In the same way, the temperature difference at each same time point between the temperature curve f and the temperature curve g in 10 minutes is determined to form the historical temperature difference curve between the temperature curve f and the temperature curve g. Figure 5 As shown in FIG. 2, when the time is 5:10, the temperature of the temperature curve f is 280℃, and the temperature of the temperature curve g is 252℃, the difference between the temperature curve f and the temperature curve g is 280℃-252℃=28℃. In the same way, the temperature difference at each same time point between the temperature curve f and the temperature curve g in 10 minutes is determined to form the historical temperature difference curve between the temperature curve f and the temperature curve g.

[0073] As to step S12, when the absolute value of any historical temperature difference on any historical temperature difference curve is greater than the preset temperature difference, the material distribution angle of the next batch of material is adjusted, and the next batch of material is controlled to be distributed according to the adjusted material distribution angle; wherein the adjusted material distribution angle of the next batch of material is different from the actual material distribution angle of the previous batch of material.

[0074] When the absolute value of any historical temperature difference on any historical temperature difference curve is greater than the preset temperature difference, it indicates that the temperature difference of the gas flow at the top of the blast furnace is too large, which affects the iron-making reaction of the blast furnace, and also means that the previous batch of material distribution is unreasonable, and the material distribution angle of the next batch of material needs to be adjusted on the basis of the previous batch, and the next batch of material is controlled to be distributed according to the adjusted material distribution angle. By changing the material distribution angle of the next batch of material, the distribution position of the next batch of raw materials and fuel in the blast furnace can be changed, which changes the contact area of the next batch of raw materials and fuel, the contact area of the fuel and air, and the contact area of the raw materials and air. When the contact area of the next batch of raw materials and fuel, the contact area of the fuel and air, and the contact area of the raw materials and air change, it means that the temperature of the next batch of gas flow will change. The smaller the temperature difference of the gas flow in the blast furnace, the more reasonable the distribution, and the more conducive to the iron-making reaction of the blast furnace.

[0075] Specifically, the raw material distribution angle of the outermost distribution gear of the next batch of material can be adjusted to be the first target raw material distribution angle; and the target raw material distribution angle and the target fuel distribution angle corresponding to each distribution gear of the next batch of material can be determined according to the first target raw material distribution angle.

[0076] When the blast furnace feeding system is charging, the outermost charging position is charged first. Therefore, adjusting the outermost charging position is easier than adjusting other charging positions.

[0077] In addition, due to the chemical properties of the raw material, when the contact surface between the raw material and the fuel and the contact surface between the raw material and the air change, the change range of the gas flow temperature is large. Therefore, adjusting the raw material charging angle has a more obvious effect on the gas flow temperature than adjusting the fuel charging angle.

[0078] Therefore, adjusting the raw material charging angle of the outermost charging position can easily and quickly change the gas flow temperature.

[0079] In addition to the raw material charging angle and the fuel charging angle corresponding to the innermost charging position, the difference between the raw material charging angle and the fuel charging angle corresponding to each charging position of the blast furnace feeding system is usually a fixed difference, and the difference between the raw material charging angles corresponding to each charging position of the blast furnace feeding system is usually a fixed difference. Therefore, when the first target raw material charging angle of the next batch of materials is determined, the target raw material charging angle and the target fuel charging angle corresponding to each charging position of the next batch of materials can also be determined.

[0080] Table 1 is a table of the relationship between the raw material charging angle and the fuel charging angle of a blast furnace feeding system of a certain blast furnace with a charging capacity of 3200m 3

[0081] Table 1

[0082]

[0083] It should be noted that the preset raw material charging angle corresponding to the innermost charging position can be 0-45°C, and the fuel charging angle corresponding to the innermost charging position is usually a fixed value, which can be determined according to actual conditions.

[0084] The raw material charging angle of the outermost charging position of the blast furnace feeding system can be adjusted in the range of 40-45°C. When the first target raw material charging angle of the outermost charging position of the next batch of materials is determined, the target raw material charging angle corresponding to the remaining charging positions except the innermost charging position and the target fuel charging angle corresponding to each charging position except the innermost charging position can be determined.

[0085] ​Before the next batch of material is controlled to be distributed according to the adjusted distribution angle, the scrap steel and iron ore in the next batch of material can also be controlled to be filled into the raw material tank of the blast furnace feeding system according to the preset filling sequence, so that the scrap steel is distributed in the middle and lower parts of the raw material tank.

[0086] When the scrap steel is distributed in the middle and lower parts of the raw material tank, it is beneficial to the raw material tank to distribute to the blast furnace. The preset filling sequence can be determined according to the actual situation, as long as the scrap steel can be distributed in the middle and lower parts of the raw material tank.

[0087] It can be understood that when the raw material tank is distributed, the raw material in the upper part of the raw material tank will extrude the material in the lower part, so that the material in the lower part is more easily discharged, which means that the scrap steel distributed in the middle and lower parts of the raw material tank is more easily discharged.

[0088] However, it should be noted that the scrap steel cannot be controlled at the bottom of the raw material tank. If the scrap steel is controlled at the bottom of the raw material tank, when the raw material tank is distributed, the scrap steel will enter the blast furnace first, and the scrap steel will scratch the inner side of the blast furnace, which will seriously affect the internal reaction of the blast furnace.

[0089] Before the next batch of material is controlled to be distributed according to the adjusted distribution angle, the scrap steel quality ratio can also be determined according to the mass of the scrap steel and the mass of the iron ore in the next batch of material; when the scrap steel quality ratio is greater than the preset mass ratio, the mass of the scrap steel in the next batch of material is adjusted so that the scrap steel quality ratio is less than or equal to the preset mass ratio. When the steel quality ratio in the next batch of material is less than or equal to the preset mass ratio, it is beneficial to the raw material pipe to discharge the raw material, and it is beneficial to the blast furnace to produce iron.

[0090] Specifically, the total mass of the raw material in the next batch of material can be determined according to the sum of the mass of the scrap steel and the mass of the iron ore in the next batch of material, and the scrap steel quality ratio can be determined according to the total mass of the raw material in the next batch of material.

[0091] The scrap steel is usually a special-shaped material (irregularly shaped material), and when the scrap steel in the raw material tank is too much, the raw material in the raw material tank is easily stuck in the center throat pipe 3 when the raw material is discharged into the blast furnace, which will cause the raw material to be unable to smoothly enter the internal part of the blast furnace, and will seriously affect the production of the blast furnace.

[0092] The inventors have found through many experiments that the preset mass ratio is related to the density of the scrap steel. When the density of the scrap steel is greater than 3t / m 3 , the mass ratio of the scrap steel in the raw material tank (the next batch of material) should be less than or equal to 1 / 4; when the density of the scrap steel is greater than 1.5t / m 3 and less than or equal to 3t / m 3When the mass ratio of scrap steel in the raw material tank (next batch of material) is less than or equal to 1 / 5; when the density of scrap steel is greater than 1t / m³ 3 And less than or equal to 1.5t / m 3 At that time, the mass ratio of scrap steel in the raw material tank (the next batch of materials) should be less than or equal to 1 / 6.

[0093] Before controlling the next batch of materials to be laid according to the adjusted laying angle, the mass of fuel in the next batch of materials can also be determined based on the mass of scrap steel, the mass of iron ore, and the density of scrap steel in the next batch of materials.

[0094] To ensure the smooth operation of the blast furnace ironmaking reaction, the quality of the raw materials and fuel in the next batch of materials needs to be compatible. Through numerous experiments, the inventors discovered that the density of the scrap steel in the next batch of materials is also related to the quality of the fuel in that batch. When the density of the scrap steel is greater than 3 t / m³... 3 At that time, the next batch of materials needs to meet the following quality requirements: fuel mass ratio ≤ 1:4.5; when the density of scrap steel is greater than 1.5t / m³. 3 And less than or equal to 3t / m 3 At that time, the next batch of materials needs to meet the following quality requirements: fuel mass ratio ≤ 1:4.8; when the density of scrap steel is greater than 1t / m³ 3 And less than or equal to 1.5t / m 3 At that time; the next batch of materials needs to meet the following quality requirements: the quality of fuel ≤ 1:5.0.

[0095] Before controlling the next batch of materials to be laid according to the adjusted laying angle, the number of raw material laying portions corresponding to each laying position in the next batch of materials can be obtained; based on the number of raw material laying portions corresponding to each laying position in the next batch of materials and the density of scrap steel in the next batch of materials, the number of fuel laying portions corresponding to multiple laying positions in the next batch of materials can be determined.

[0096] The number of raw material distribution portions corresponding to each distribution point may be the same or different, but the quality of each portion of raw material is the same, and the number of raw material distribution portions corresponding to each distribution point is usually fixed. For example, a blast furnace feeding system has 6 distribution points. The preset number of raw material distribution portions for distribution point A is 2, for distribution point B it is 3, for distribution point C it is 3, for distribution point D it is 2, for distribution point E it is 2, and for distribution point Z it is 0. It should be noted that the number of raw material distribution portions is the same as the number of rotations required for the distribution chute 2. For example, when placing the next batch of material, if the preset number of raw material distribution portions for distribution point A is 2, then the distribution chute 2 needs to rotate 2 times.

[0097] The fuel distribution of each material distribution position in the next batch of materials is related to the density of the scrap steel in the next batch of materials and the raw material distribution of each material distribution position.

[0098] The greater the density of the scrap steel and the more the raw material distribution of each material distribution position, the more the corresponding fuel distribution is needed. The greater the density of the scrap steel and the more the raw material distribution of each material distribution position, means that more coke is needed, and the more fuel distribution means that the area of coke in the blast furnace can be increased, which is more conducive to the reduction reaction. The corresponding fuel distribution of each material distribution position can be determined according to the actual situation.

[0099] After adjusting the material distribution angle of the next batch of materials, it can also be determined whether the rationality of the material distribution of the next batch of materials is improved.

[0100] According to the target temperature curve of each point in the target time period of the next batch of materials in the material distribution process, it can be determined whether the material distribution angle of the subsequent batch of materials needs to be adjusted.

[0101] The method of obtaining the target temperature curve of each point in the target time period of the next batch of materials in the material distribution process is similar to that of obtaining the historical temperature curve of each point in the historical time period of the previous batch of materials at the top of the blast furnace.

[0102] After obtaining the target temperature curve corresponding to the next batch of materials, the target temperature difference curve corresponding to the target temperature difference value between each adjacent two target temperature curves can be determined according to the distribution relationship between the target temperature curves corresponding to the multiple points. When the absolute value of any target temperature difference value on any target temperature difference curve is less than or equal to the preset temperature difference value, it means that the temperature of the gas flow at the top of the furnace is uniform, which is conducive to the blast furnace ironmaking reaction, and the rationality of the material distribution of the next batch of materials is high, and the material distribution angle of the subsequent batch of materials does not need to be adjusted.

[0103] In summary, the application obtains the actual material distribution angle corresponding to the previous batch of materials and the historical temperature curve corresponding to each point in the plurality of points of the blast furnace top in the historical time period, and determines the historical temperature difference value curve corresponding to the historical temperature difference value between each adjacent two historical temperature curves according to the distribution relationship between the historical temperature curves corresponding to the plurality of points respectively; when the absolute value of any historical temperature difference value on any historical temperature difference value curve is greater than the preset temperature difference value, the material distribution angle of the next batch of materials is adjusted, and the next batch of materials is distributed according to the adjusted material distribution angle. The application determines whether the temperatures of the gas flow at each position in the top of the blast furnace are too different by judging the absolute value of any historical temperature difference value on any historical temperature difference value curve and the preset temperature difference value, and when the absolute value of at least one temperature difference value is greater than the preset temperature difference value, it indicates that the gas flow is not stable in the blast furnace, which is not conducive to the ironmaking reaction, and the previous batch of material distribution is unreasonable, and the material distribution angle of the next batch of materials needs to be adjusted.

[0104] The application can quickly determine the target raw material distribution angle corresponding to each of the remaining distribution positions except the innermost distribution position, and the target fuel distribution angle corresponding to each of the plurality of distribution positions except the innermost distribution position, by adjusting the raw material distribution angle of the outermost distribution position and the relationship between the raw material distribution angle and the fuel distribution angle of each distribution position and the relationship between the raw material distribution angles of each distribution position, thereby improving the efficiency of adjusting the material distribution angle.

[0105] The application also determines whether the material distribution rationality of the next batch of materials is improved by judging the relationship between any target temperature difference value on the target temperature difference curve and the preset temperature difference value according to the target temperature curve corresponding to each point of the next batch of materials in the target time period, and when any target temperature difference value on the target temperature difference curve is less than or equal to the preset temperature difference value, it indicates that the corresponding gas flow of the next batch of materials is relatively stable, and the rationality of the next batch of materials is improved, and the material distribution angle of the subsequent batch of materials does not need to be adjusted.

[0106] The application also controls the distribution position of the scrap steel in the raw material tank and the mass proportion of the scrap steel of the next batch of materials, so that the raw material tank is more smoothly discharged to the blast furnace, which is beneficial to the smelting of the blast furnace.

[0107] Based on the same inventive concept, the application also provides a blast furnace feeding system distribution device as shown in Figure 6 The device comprises:

[0108] The temperature difference determination module 61 is configured to acquire the actual material distribution angle corresponding to the previous batch of material and a historical temperature curve corresponding to each of the plurality of points of the blast furnace top in a historical time period, and determine a historical temperature difference curve corresponding to a historical temperature difference between each adjacent two historical temperature curves according to a distribution relationship between the historical temperature curves corresponding to the plurality of points.

[0109] The material distribution angle adjustment module 62 is configured to adjust the material distribution angle of the next batch of material when the absolute value of any historical temperature difference on any historical temperature difference curve is greater than a preset temperature difference, and control the next batch of material to be distributed according to the adjusted material distribution angle; wherein the adjusted material distribution angle of the next batch of material is different from the actual material distribution angle of the previous batch of material.

[0110] Further, the material distribution angle adjustment module 62 is configured to:

[0111] Before controlling the next batch of material to be distributed, the method further includes: controlling the scrap steel and iron ore in the next batch of material to be filled into the raw material tank of the blast furnace feeding system according to a preset filling sequence, so that the scrap steel is distributed in the middle and lower parts of the raw material tank.

[0112] Further, the material distribution angle adjustment module 62 is configured to:

[0113] Before controlling the next batch of material to be distributed, the method further includes: determining a scrap steel mass ratio according to the mass of the scrap steel and the mass of the iron ore in the next batch of material.

[0114] When the scrap steel mass ratio is greater than a preset mass ratio, the mass of the scrap steel in the next batch of material is adjusted so that the scrap steel mass ratio is less than or equal to the preset mass ratio.

[0115] Further, the material distribution angle adjustment module 62 is configured to:

[0116] Before controlling the next batch of material to be distributed, the method further includes: acquiring the raw material distribution quantity corresponding to each material distribution gear of the next batch of material.

[0117] According to the raw material distribution quantity corresponding to each material distribution gear of the next batch of material and the density of the scrap steel in the next batch of material, the fuel distribution quantity corresponding to each material distribution gear of the next batch of material is determined.

[0118] Further, the material distribution angle adjustment module 62 is configured to:

[0119] Before controlling the next batch of material to be distributed, the method further includes: determining the mass of the fuel in the next batch of material according to the mass and density of the scrap steel and the mass of the iron ore in the next batch of material.

[0120] Further, the material distribution angle adjustment module 62 is configured to:

[0121] Adjusting the material distribution angle of the next batch of material, comprising: adjusting the raw material distribution angle of the outermost material distribution gear of the next batch of material to the first target raw material distribution angle;

[0122] According to the first target raw material distribution angle, determining the raw material distribution angle and the fuel distribution angle corresponding to each material distribution gear of the next batch of material.

[0123] Further, the material parameter adjustment module 62 is configured to:

[0124] According to the target temperature curve corresponding to each point of the next batch of material in the target time period during the material distribution process, determining whether the material distribution angle of the subsequent batch of material needs to be adjusted.

[0125] Based on the same inventive concept, the present application also provides an electronic device as shown in Figure 7 The electronic device comprises:

[0126] a processor 71;

[0127] a memory 72 for storing processor-executable instructions;

[0128] The processor is configured to execute to implement the blast furnace feeding system material distribution method provided in the foregoing.

[0129] Based on the same inventive concept, the present application also provides a non-transitory computer-readable storage medium, when the instructions in the storage medium are executed by the processor 71 of the electronic device, the electronic device can execute the blast furnace feeding system material distribution method provided in the foregoing.

[0130] Since the electronic device introduced in the embodiment is the electronic device used to implement the information processing method in the embodiment of the present application, the specific implementation of the electronic device and its various forms of changes can be understood by those skilled in the art based on the information processing method introduced in the embodiment of the present application, so the electronic device how to implement the method in the embodiment of the present application will not be introduced in detail. As long as the electronic device used to implement the information processing method in the embodiment of the present application is implemented by those skilled in the art, it belongs to the scope of the present application.

[0131] Those skilled in the art will appreciate that embodiments of the application can be provided as methods, systems, or computer program products. Therefore, the present application can take the form of entirely hardware embodiments, entirely software embodiments, or embodiments combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROMs, optical storage, etc.) containing computer-usable program code.

[0132] The present application is described in reference to the flowchart and / or block diagrams of the methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each block of the flowchart and / or block diagrams, and combinations of blocks in the flowchart and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart and / or block diagram block or blocks. Figure 1 one or more flowcharts and / or blocks Figure 1 means for carrying out the function specified by the block or blocks.

[0133] These computer program instructions can also be stored in a computer- readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instructions which implement the function specified in the flowchart and / or block diagram block or blocks. Figure 1 one or more flowcharts and / or blocks Figure 1 means for carrying out the function specified by the block or blocks.

[0134] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the function specified in the flowchart and / or block diagram block or blocks. Figure 1 one or more flowcharts and / or blocks Figure 1 means for carrying out the function specified by the block or blocks.

[0135] While the preferred embodiments of the application have been described, additional variations and modifications can be made to the embodiments by those of skill in the art once they have the benefit of the present disclosure without departing from the spirit and scope of the application. Accordingly, the attached claims are intended to cover all such variations and modifications as falling within the scope of the application.

[0136] Obviously, numerous modifications and variations of the present application are possible in light of the above teachings. It is therefore to be understood that within the scope of the appended claims and their equivalents, the application can be practiced otherwise than as specifically described.

Claims

1. A method for distributing material in a blast furnace feeding system, characterized in that, The method includes: Obtain the actual material feeding angle corresponding to the previous batch of materials and the historical temperature curve of each point in multiple points on the top of the blast furnace within a historical time period. Based on the distribution relationship between the historical temperature curves corresponding to multiple points, determine the historical temperature difference curve corresponding to the historical temperature difference between each pair of adjacent historical temperature curves. When the absolute value of any historical temperature difference on any historical temperature difference curve is greater than the preset temperature difference, the fabric angle of the next batch of materials is adjusted, and the next batch of materials is controlled to be fabricated according to the adjusted fabric angle; wherein, the adjusted fabric angle of the next batch of materials is different from the actual fabric angle of the previous batch of materials.

2. The method as described in claim 1, characterized in that, Before controlling the next batch of materials to be laid, the method includes: The scrap steel and iron ore in the next batch of materials are controlled to be fed into the raw material tank of the blast furnace feeding system in a preset filling sequence, so that the scrap steel is distributed in the middle and lower part of the raw material tank.

3. The method as described in claim 1, characterized in that, Before controlling the next batch of materials to begin spreading, the method further includes: The percentage of scrap steel mass is determined based on the mass of scrap steel and the mass of iron ore in the next batch of materials. When the proportion of scrap steel mass is greater than the preset proportion, the mass of scrap steel in the next batch of materials is adjusted so that the proportion of scrap steel mass is less than or equal to the preset proportion.

4. The method as described in claim 1, characterized in that, Before controlling the next batch of materials to begin spreading, the method further includes: Obtain the number of raw material fabric portions corresponding to each fabric stop in the next batch of materials; Based on the number of raw material feed portions corresponding to each feed stop of the next batch of materials and the density of scrap steel in the next batch of materials, determine the number of fuel feed portions corresponding to each of the multiple feed stops of the next batch of materials.

5. The method as described in claim 1, characterized in that, Before controlling the next batch of materials to begin spreading, the method further includes: The mass of fuel in the next batch of materials is determined based on the mass and density of scrap steel and the mass of iron ore in the next batch of materials.

6. The method as described in claim 1, characterized in that, The adjustment of the fabric angle for the next batch of materials includes: Adjust the raw material fabric angle of the outermost fabric stop of the next batch of materials to the first target raw material fabric angle; The raw material and fuel feeding angles corresponding to each feeding stop of the next batch of materials are determined based on the first target raw material feeding angle.

7. The method as described in claim 1, characterized in that, The method further includes: Based on the target temperature curves of each point during the next batch of material's laying process within the target time period, determine whether the laying angle of subsequent batches of material needs to be adjusted.

8. A charging device for a blast furnace feeding system, characterized in that, The device includes: The temperature difference determination module is used to obtain the actual material feeding angle corresponding to the previous batch of materials and the historical temperature curve corresponding to each of the multiple points on the top of the blast furnace within a historical time period. Based on the distribution relationship between the historical temperature curves corresponding to the multiple points, the module determines the historical temperature difference curve corresponding to the historical temperature difference between each pair of adjacent historical temperature curves. The fabric angle adjustment module is used to adjust the fabric angle of the next batch of materials when the absolute value of any historical temperature difference on any historical temperature difference curve is greater than a preset temperature difference value, and to control the next batch of materials to be fabricated according to the adjusted fabric angle; wherein, the adjusted fabric angle of the next batch of materials is different from the actual fabric angle of the previous batch of materials.

9. An electronic device, characterized in that, include: processor; Memory used to store the processor's executable instructions; The processor is configured to execute a blast furnace feeding system material distribution method as described in any one of claims 1 to 7.

10. A non-transitory computer-readable storage medium, wherein instructions in the storage medium, when executed by a processor of an electronic device, enable the electronic device to perform a method for feeding a blast furnace feeding system as described in any one of claims 1 to 7.

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