A method, device, equipment and storage medium for treating dross during tapping of a blast furnace

Abstract

The application discloses a slag treatment method, device and equipment for tapping of a blast furnace and a storage medium, and the method comprises the following steps: when the blast furnace discharges molten iron into a main ditch, starting a temperature probe and a composition probe; driving the temperature probe to detect the temperature value of the molten iron flowing into a rear eye area and driving the composition probe to detect the composition value of the molten iron flowing into the rear eye area at multiple sampling points; detecting the slagging state of the molten iron flowing into the rear eye area according to the temperature value and the composition value; if the slagging state is that the floating slag has been generated, driving a blower to spray gas to the rear eye area to clean the floating slag. According to the temperature value and the composition value of the molten iron, the embodiment identifies the slagging state, enriches the number of features, guarantees the accuracy of identifying the slagging state, guarantees the operator of the blast furnace to correctly adjust the production operation, guarantees the stable production of the blast furnace, and further guarantees the stable quality of the molten iron.

Description

Technical Field

[0001] This invention relates to the field of smelting technology, and in particular to a method, apparatus, equipment and storage medium for treating slag from blast furnace tapping. Background Technology

[0002] When blast furnace taps molten iron, a skimmer is used to skim off the slag. Due to long-term operation, the skimmer is prone to wear and tear and the formation of slag. The slag tends to clump on the surface of the molten iron and floats on the surface, causing deviations in the measurement of the molten iron composition. This can easily lead to incorrect adjustments by blast furnace operators, resulting in fluctuations in blast furnace production and, consequently, abnormal molten iron quality.

[0003] When foreign objects appear in molten iron, they are mainly cleaned manually, that is, by manually removing the slag with a steel rod. Due to the close contact with the high-temperature liquid slag and iron, the working environment is hot and the operation is risky. In addition, the steel rod melts quickly after contacting the high-temperature molten iron, which increases the cost. Summary of the Invention

[0004] This invention provides a method, apparatus, equipment, and storage medium for treating slag from blast furnace tapping, in order to solve the problems of improving the accuracy of detecting molten iron composition and reducing the safety of cleaning filter slag.

[0005] According to one aspect of the present invention, a method for treating slag during blast furnace tapping is provided. A skimmer and a post-passage area are provided on the main channel of the blast furnace. A detector and a blower are provided above the post-passage area. The detector includes a temperature probe located at the inlet of the post-passage area and a composition probe located in the middle of the post-passage area. The method includes:

[0006] When the blast furnace discharges molten iron into the main ditch, the temperature probe and the composition probe are activated;

[0007] At multiple sampling points, the temperature probe is driven to detect the temperature value of the molten iron flowing into the post-passage area, and the composition detector probe is driven to detect the composition value of the molten iron flowing into the post-passage area.

[0008] The slag formation state of the molten iron flowing into the post-passage area is detected based on the temperature and composition values.

[0009] If the slagging state is that scum has been generated, the blower is driven to spray gas into the rear eye area to clean the scum.

[0010] According to another aspect of the present invention, a slag treatment device for blast furnace tapping is provided. A skimmer and a post-passage area are provided on the main trough of the blast furnace. A detector and a blower are provided above the post-passage area. The detector includes a temperature probe located at the inlet of the post-passage area and a composition probe located in the middle of the post-passage area. The device comprises:

[0011] The probe activation module is used to activate the temperature probe and the composition probe when the blast furnace discharges molten iron into the main ditch;

[0012] The molten iron monitoring module is used to drive the temperature probe at multiple sampling points to detect the temperature value of the molten iron flowing into the post-passage area, and to drive the composition detector probe to detect the composition value of the molten iron flowing into the post-passage area.

[0013] The slag detection module is used to detect the slag state of the molten iron flowing into the post-passage area based on the temperature value and the composition value.

[0014] The scum removal module is used to drive the blower to spray gas into the rear eye area to remove the scum if the scum formation state is that scum has been generated.

[0015] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising:

[0016] At least one processor; and

[0017] A memory communicatively connected to the at least one processor; wherein,

[0018] The memory stores a computer program that can be executed by the at least one processor, which enables the at least one processor to perform the slag treatment method for blast furnace tapping according to any embodiment of the present invention.

[0019] According to another aspect of the present invention, a computer-readable storage medium is provided, the computer-readable storage medium storing a computer program, the computer program being executed by a processor to implement the slag treatment method for blast furnace tapping as described in any embodiment of the present invention.

[0020] In this embodiment, a slag skimmer and a rear pass-through area are provided on the main trough of the blast furnace. A detector and a blower are provided above the rear pass-through area. The detector includes a temperature probe located at the entrance of the rear pass-through area and a composition probe located in the middle of the rear pass-through area. When the blast furnace discharges molten iron into the main trough, the temperature probe and the composition probe are activated. At multiple sampling points, the temperature probe is driven to detect the temperature value of the molten iron flowing into the rear pass-through area, and the composition probe is driven to detect the composition value of the molten iron flowing into the rear pass-through area. The slag formation state of the molten iron flowing into the rear pass-through area is detected based on the temperature and composition values. If the slag formation state is that floating slag has been generated, the blower is driven to spray gas into the rear pass-through area to clean the floating slag. This embodiment identifies the slag formation state based on the temperature and composition values ​​of molten iron, enriching the number of features and ensuring the accuracy of slag formation identification. This ensures that blast furnace operators can correctly adjust production operations, maintain stable blast furnace production, and consequently, ensure stable molten iron quality. Furthermore, injecting gas into the slag not only enables rapid slag removal but also reduces manual cleaning work, decreases the consumption of equipment such as steel rods, lowers costs, reduces the labor intensity of operators, and ensures operator safety.

[0021] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a flowchart of a blast furnace tapping slag treatment method according to Embodiment 1 of the present invention;

[0024] Figure 2 This is a schematic diagram of blast furnace tapping according to Embodiment 1 of the present invention;

[0025] Figure 3 This is a schematic diagram of a method for monitoring molten iron according to Embodiment 1 of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of a fan according to Embodiment 1 of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of a blast furnace tapping slag treatment device according to Embodiment 2 of the present invention;

[0028] Figure 6 This is a schematic diagram of the structure of an electronic device provided according to Embodiment 3 of the present invention.

[0029] Figure 2 , Figure 3 and Figure 4 middle:

[0030] 200. Blast furnace; 201. Support frame; 202. Slide rail; 2021. First induction plate; 2022. Second induction plate; 210. Taphole; 220. Main channel; 230. Slag channel; 231. Slag opening; 240. Skimmer; 250. Rear pass area; 260. Leakage channel; 270. Temperature probe; 280. Composition probe; 290. Blower; 291. Air pipe; 292. Motor; 293. Pulley; 2941. First distance probe; 2942. Second distance probe; 295. Cylinder; 296. Gas pipe. Detailed Implementation

[0031] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0032] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0033] Example 1

[0034] Figure 1 The flowchart below shows a method for treating slag during blast furnace tapping according to Embodiment 1 of the present invention. This method can be executed by a slag treatment device for blast furnace tapping. The slag treatment device for blast furnace tapping can be implemented in hardware and / or software. The slag treatment device for blast furnace tapping can be configured in electronic equipment, especially in the control system of the blast furnace.

[0035] like Figure 2 , Figure 3 and Figure 4 As shown, a slag skimmer 240 and a rear blast furnace eye area 250 are provided on the main trough 220 of the blast furnace 200.

[0036] Among them, the blast furnace 200 discharges molten iron from the tap 210 to the main ditch 220. The main ditch 220 (also known as the main iron ditch) is a facility for separating liquid slag and iron. It is divided into iron storage type and non-iron storage type according to whether molten iron is stored in the ditch when iron is not discharged.

[0037] If the slag-iron separation effect in the main channel is poor during the slag-iron tapping process in the blast furnace 200, the slag will flow out with the skimmer 240, pass through the back eye area 250 and then flow into the molten iron ladle.

[0038] The slag skimmer 240 is a container that separates slag and iron during the blast furnace tapping process. It is subjected to the erosion and scouring of high-temperature slag and iron, and discharges the slag from the slag opening 231 to the slag ditch 230. Generally, the slag skimmer consists of a sand dam, sand gate, large gate, iron flow channel (through hole), small well, residual iron hole, and iron flow ditch head.

[0039] The post-slag-skimming area 250, located after the slag skimmer 240, is used for online measurement of molten iron temperature and composition during the tapping process of the blast furnace 200. The post-slag-skimming area 250 is where the slag and iron in the main channel 220 are separated and then flow out through the drain channel 260.

[0040] In practical applications, if the slag-iron separation effect in the main channel 220 is reduced during the slag-iron tapping process in the blast furnace 200, the slag will flow out with the skimmer 240 and flow into the molten iron ladle after passing through the back eye area 250.

[0041] As the slag skimmer 240 is used for an extended period, coupled with the scouring effect of high-temperature molten iron, damage to its components (especially the crossbeam) is inevitable, leading to cracks and other issues. When these components (especially the crossbeam) are damaged, slag overflow can easily occur, causing slag to clump together on the surface of the molten iron and float there.

[0042] In addition, since there is a buffer swirling area in the rear eyelet area 250, the swirling area is used to reduce the flow rate of molten iron, allowing the molten iron to automatically overflow the eyelet and enter the trough, flowing into the molten iron ladle. After the slag is removed by the slag skimmer 240, the slag quickly condenses into iron slag on the surface of the molten iron.

[0043] When slag appears in the 250mm post-passage area, it flows on the surface of the molten iron. The laser used for online detection of the molten iron composition is at a fixed point. When the slag passes through the fixed point, the laser scanning point falls on the slag, causing abnormal data to be detected. The laser detection of composition is done by continuously tapping points and taking the average value. The multiple tapping on the slag reduces the accuracy of the molten iron composition detection data, resulting in a large deviation between the detected composition and the actual composition, and the production parameters are distorted accordingly.

[0044] In this embodiment, a detector and a fan 290 are provided above the rear eye passage area 250. The detector includes a temperature probe 270 located at the entrance of the rear eye passage area 250 and a composition probe 280 located in the middle of the rear eye passage area 250.

[0045] The temperature probe 270 is installed at the molten iron inlet of the rear eyelet area 250 of the skimmer 240, where slag and iron separation is just completed. Molten iron overflows from the crossbeam of the skimmer 240, and the temperature of the molten iron is the highest at this point, which can ensure the accuracy of the temperature measurement of the molten iron.

[0046] A composition probe 280 is installed in the middle of the rear eye region 250 of the skimmer 240. Here, the molten iron is flowing horizontally, and the plasma radiated by various elements in the molten iron is relatively stable, which can ensure the accuracy of measuring the composition of the molten iron.

[0047] like Figure 1 As shown, the method includes:

[0048] Step 101: When molten iron is discharged from the blast furnace to the main ditch, start the temperature probe and composition probe.

[0049] Under normal circumstances, the temperature probe and the composition probe belong to the same detector. During the process of molten iron being discharged from the taphole to the main channel in the blast furnace, the temperature probe and the composition probe can be activated at the same time.

[0050] In practical implementation, the iron tapping signal generated by the blast furnace can be received, which indicates that molten iron is discharged from the blast furnace to the main ditch.

[0051] After receiving the iron tapping signal, wait for a preset time period, such as 8-10 minutes. If the time period is exceeded, activate the temperature probe and composition probe.

[0052] Since the main trough of the blast furnace is a cold trough in the early stage, the slag and iron take a long time to pass through. The temperature of molten iron measured during the waiting period is not representative and has low reference value, so it can be ignored to ensure the accuracy of slag detection.

[0053] Step 102: Drive the temperature probe at multiple sampling points to detect the temperature value of the molten iron flowing into the eye region, and drive the composition detector probe to detect the composition value of the molten iron flowing into the eye region.

[0054] In this embodiment, multiple sampling points can be set on the time axis to form a sequence of sampling points, t1, t2, t3, t4, ..., t n The time interval between two adjacent sampling points can be the same, such as 3 minutes, or the time interval between two adjacent sampling points can be different. This embodiment does not impose any restrictions on this.

[0055] Upon reaching each sampling point, the temperature probe is driven to detect the temperature of the molten iron flowing into the post-flowing area, resulting in a sequence of temperature values: T1, T2, T3, T4, ..., T n On the other hand, by driving the component detector probe to flow into the molten iron passing through the eye region, a series of component value sequences can be obtained: S1, S2, S3, S4, ..., S... n , .

[0056] Step 103: Detect the slag formation state of the molten iron flowing into the eyelet area based on the temperature and composition values.

[0057] Because the molten iron flows at a relatively fast speed and the distance between the temperature probe and the composition probe is relatively short, it can be considered that the temperature probe and the composition probe are detecting the temperature and composition values ​​of the same molten iron flowing into the eye region.

[0058] Therefore, in this embodiment, the slag formation state of the same molten iron flowing into the blast furnace can be detected by combining information from two different dimensions: temperature value and composition value, so as to guide the production operation of the blast furnace. The slag formation state refers to whether slag is generated on the molten iron.

[0059] In one embodiment of the present invention, step 103 may include the following steps:

[0060] Step 1031: Identify foreign objects on the molten iron in the after-eye area based on the change information of adjacent temperature values.

[0061] During normal blast furnace production, there are no slags, debris, or other foreign objects in the post-blast furnace area, and the temperature of the molten iron tends to be stable, meaning that the temperature value of the molten iron is relatively stable.

[0062] When foreign objects such as scum and debris are present, the temperature will fluctuate instantaneously and the fluctuation range is large. Under normal circumstances, the fluctuation range will exceed 20°C.

[0063] Therefore, in this embodiment, adjacent sampling points on the time axis can be traversed in real time, and foreign objects such as slag and debris can be identified on the molten iron in the viewing area according to the change information of adjacent temperature values.

[0064] In practical implementation, the temperature values ​​of three consecutive sampling points can be selected, which are respectively the temperature value T of the previous sampling point.n-1 The temperature value T at the current sampling point n The temperature value T at the next sampling point n+1 .

[0065] If the current temperature value is T n Less than the previous temperature value T n-1 (T n <T n-1 If the previous temperature value T is calculated, then... n-1 Compared with the current temperature value T n The difference between them is taken as the first temperature difference ΔT1, that is, ΔT1 = T n-1 -T n .

[0066] If the next temperature value T n+1 Greater than the current temperature value T n Then calculate the next temperature value T. n+1 Compared with the current temperature value T n The difference between them is taken as the second temperature difference ΔT2, that is, ΔT2 = T n+1 -T n .

[0067] If the first temperature difference is greater than the preset temperature threshold (e.g., 20℃) and the second temperature difference is less than the preset temperature threshold (e.g., 20℃), that is, the temperature value drops rapidly and then rises rapidly, which is consistent with the temperature change pattern of foreign objects, then it can be determined that there are foreign objects on the molten iron in the back-passing area.

[0068] When a foreign object is detected, its temperature and composition values ​​can be optimized, increasing the accuracy of molten iron temperature detection to 96% and the accuracy of molten iron composition detection to over 90%.

[0069] Step 1032: Generate a time window after the sampling point corresponding to the foreign object.

[0070] In this embodiment, if a foreign object is detected, a time window of a specified length can be added, with the sampling point corresponding to the foreign object (i.e., the current sampling point) as the starting point of the time window.

[0071] For example, if there is a 3-minute interval between two adjacent sampling points, a 30-minute time window can be added, with the current sampling point as the starting point of the time window.

[0072] Step 1033: Within the time window, identify the trend of multiple consecutive temperature values, and read the silicon content in the composition values.

[0073] On the one hand, multiple consecutive temperature values ​​constitute a time series. The temperature of the slag is lower and more stable than that of the molten iron. Therefore, within this time window, the temperature value T from the starting point of the time window...n Initially, algorithms such as the slope method, Cox-Stuart test, and Mann-Kendall test can be used to analyze multiple consecutive temperature values ​​(T). n+1 T n+2 T n+3 T n+4 The trend of …… is used as a condition for judging whether scum is generated.

[0074] On the other hand, the silicon content in molten iron is generally in the range of 0.2-0.7%, while the silicon content in slag is above 30%, which is quite different. Therefore, within this time window, the silicon content of any component value is read as a condition for determining whether slag is generated.

[0075] Within a time window, the trend of multiple consecutive temperature values ​​and silicon content can reflect the slagging situation, thereby reflecting the degree of damage to the skimmer to a certain extent and providing technical support for repairing the skimmer.

[0076] Step 1034: Within the time window, if the trend is downward and any silicon content exceeds the preset content threshold, then the slag state of the molten iron flowing into the eye passage area is determined to be that slag has been generated.

[0077] Within this time window, if the temperature values ​​of multiple consecutive sampling points show a decreasing trend and the silicon content of any sampling point exceeds a preset content threshold (e.g., 30%), then the slag formation state of the molten iron flowing into the backflow area can be determined as having generated slag.

[0078] Step 104: If the slag formation state is that floating slag has been generated, drive the blower to spray gas into the rear eye area to clean the floating slag.

[0079] If slag is detected on the molten iron, the blower can be controlled to spray gas into the rear passage area. The gas will sweep away the slag, thereby achieving the purpose of cleaning the slag, that is, blowing the slag into the trough and into the ladle.

[0080] In one embodiment of the present invention, step 104 may include the following steps:

[0081] Step 1041: Set the speed of the fan.

[0082] like Figure 2 , Figure 3 and Figure 4 As shown, a support frame 201 is installed on one side of the rear overpass area 250, and a slide 202 is installed vertically above the rear overpass area 250. The slide 202 is supported by the support frame 201. A first sensing plate 2021 is provided at the first end of the slide 202, and a second sensing plate 2022 is provided at the second end of the slide 202.

[0083] The first end of the slide 202 is close to the skimmer 240, and the second end of the slide 202 is away from the skimmer 240. The length of the interval between the first end of the slide 202 and the skimmer 240 is less than the length of the interval between the second end of the slide 202 and the skimmer 240.

[0084] Generally, the first sensor plate 2021 and the second sensor plate 2022 can be made of materials with high light reflectivity.

[0085] The fan 290 includes an air duct 291, a motor 292, a pulley 293, a first distance probe 2941, a second distance probe 2942, a cylinder 295, and an air duct 296.

[0086] Air pipe 291 is connected to a remote air pump. The air pump inputs air into cylinder 295 through air pipe 291 for compression to increase air pressure. Cylinder 295 opens the air valve, and gas is discharged from air pipe 296. Air pipe 296 is at a specified distance (e.g., 100mm) from the surface of molten iron to ensure the effect of blowing away slag.

[0087] The pulley 293 is installed on the slide rail 202, so that the fan 290 is installed in the slide rail 202. The motor 292 can drive the pulley 293 to slide on the slide rail 202, so that the fan 290 can slide on the slide rail 202.

[0088] The first distance probe 2941 faces the first sensing plate 2021, and the second distance probe 2942 faces the second sensing plate 2022.

[0089] In this embodiment, the speed at which the fan moves on the slide can be set.

[0090] In one case, this speed is the default speed, such as 20 mm / s.

[0091] In another scenario, considering that the speed of the blower is related to the effect of sludge removal when the gas flow rate is constant, that is, the greater the speed of the blower, the greater the effect of sludge removal, and vice versa, the lower the speed of the blower, the less effective the effect of sludge removal. Therefore, the speed of the blower on the slide can be dynamically adjusted according to the actual situation of the sludge to ensure the sludge is cleaned and to prevent sludge from splashing during the sludge removal process.

[0092] In the specific implementation, the magnitude of the temperature drop within the time window can be queried. The time window is added after the sampling point when foreign objects are detected on the molten iron in the post-eye region.

[0093] The magnitude is compared with the preset reduction threshold.

[0094] If the amplitude is less than the preset reduction threshold, it means that the scum is generated slowly and the amount of scum is small. In this case, the first value of the blower can be set as the speed. The first value can be a large value, such as 20mm / s. The high speed is set as the speed at which the blower moves on the slide, so that it moves quickly.

[0095] If the amplitude is greater than the preset reduction threshold, it indicates that the scum is generated at a relatively fast speed and the amount of scum is large. In this case, the second value of the blower is set as the speed. The second value is a small value, such as 15mm / s, 10mm / s, etc. The low speed is set as the speed at which the blower moves on the slide, moving slowly.

[0096] The first value is greater than the second value.

[0097] Step 1042: Control the speed of the fan and move it back and forth along the rear eye area.

[0098] In this embodiment, if a speed has been set, the blower can be controlled to move back and forth along the rear eye area at that speed to sweep away the scum.

[0099] In a specific implementation, the first distance probe can be driven to measure the first distance value between itself and the first sensing plate, and the second distance probe can be driven to measure the second distance value between itself and the second sensing plate. Since the fan is moving, the first distance value and the second distance value are constantly changing.

[0100] Initially, the blower is located at the second end of the slide to reduce the impact of the high temperature of the skimmer. At this time, the motor can be driven to run and the speed of the blower can be controlled to move from the second end to the first end.

[0101] As the fan moves toward the first end, the first distance value is compared with a preset first distance threshold.

[0102] If the first distance value is less than the preset first distance threshold, it means that the fan has approached the first end of the slide. To avoid crossing the boundary, the motor can be driven to run and the fan speed can be controlled to move to the second end.

[0103] As the fan moves toward the second end, the second distance value is compared with a preset second distance threshold.

[0104] If the second distance value is less than the preset second distance threshold, then it is determined whether the preset purging end condition is met, such as the number of purging cycles (one cycle is when the purging cycle is from the second end of the slide to the first end, returns and continues to move to the first end) reaches the threshold, the purging time exceeds the threshold, and so on.

[0105] If so, control the fan to stop moving, so that the fan stops at the first end of the slide.

[0106] If not, control the fan to continue moving towards the first end at that speed.

[0107] Step 1043: During the movement, control the blower to spray gas into the rear eye area according to the preset flow rate to clean up the scum.

[0108] During the movement of the fan, it can be controlled to operate at a preset flow rate (e.g., 40-60 m³ / h). 3 ( / min) Spray gas over the eye area to clean up scum. The flow rate should not be too high to prevent scum from splashing.

[0109] Because compressed air contains oxygen, two purging cycles are usually sufficient to remove the condensed slag, which then flows into the trough and into the molten iron ladle.

[0110] After step 1043 is completed, steps 102 and 103 are executed again. If the temperature and composition of the molten iron do not return to normal and slag is still detected, it can be predicted that there is debris accumulating in the rear pass area of ​​the skimmer. At this time, an alarm message can be generated to prompt manual handling through video monitoring or on-site manual handling.

[0111] In this embodiment, a slag skimmer and a rear pass-through area are provided on the main trough of the blast furnace. A detector and a blower are provided above the rear pass-through area. The detector includes a temperature probe located at the entrance of the rear pass-through area and a composition probe located in the middle of the rear pass-through area. When the blast furnace discharges molten iron into the main trough, the temperature probe and the composition probe are activated. At multiple sampling points, the temperature probe is driven to detect the temperature value of the molten iron flowing into the rear pass-through area, and the composition probe is driven to detect the composition value of the molten iron flowing into the rear pass-through area. The slag formation state of the molten iron flowing into the rear pass-through area is detected based on the temperature and composition values. If the slag formation state is that floating slag has been generated, the blower is driven to spray gas into the rear pass-through area to clean the floating slag. This embodiment identifies the slag formation state based on the temperature and composition values ​​of molten iron, enriching the number of features and ensuring the accuracy of slag formation identification. This ensures that blast furnace operators can correctly adjust production operations, maintain stable blast furnace production, and consequently, ensure stable molten iron quality. Furthermore, injecting gas into the slag not only enables rapid slag removal but also reduces manual cleaning work, decreases the consumption of equipment such as steel rods, lowers costs, reduces the labor intensity of operators, and ensures operator safety.

[0112] Example 2

[0113] Figure 5 This is a schematic diagram of a slag treatment device for blast furnace tapping provided in Embodiment 2 of the present invention. Figure 5As shown, a skimmer and a post-passage area are provided on the main trough of the blast furnace. A detector and a blower are installed above the post-passage area. The detector includes a temperature probe located at the inlet of the post-passage area and a composition probe located in the middle of the post-passage area. The device includes:

[0114] The probe activation module 501 is used to activate the temperature probe and the composition probe when the blast furnace discharges molten iron into the main ditch;

[0115] The molten iron monitoring module 502 is used to drive the temperature probe at multiple sampling points to detect the temperature value of the molten iron flowing into the post-passage area, and to drive the composition detector probe to detect the composition value of the molten iron flowing into the post-passage area.

[0116] The slag detection module 503 is used to detect the slag state of the molten iron flowing into the post-passage area based on the temperature value and the composition value.

[0117] The scum removal module 504 is used to drive the blower to spray gas into the rear eye area to remove the scum if the scum formation state is that scum has been generated.

[0118] In one embodiment of the present invention, the probe activation module 501 includes:

[0119] The iron tapping signal receiving module is used to receive the iron tapping signal generated by the blast furnace, the iron tapping signal indicating that molten iron is discharged from the blast furnace to the main ditch;

[0120] A waiting module is used to wait for a preset time period after receiving the iron tapping signal;

[0121] The timeout start module is used to start the temperature probe and the component probe if the time period is exceeded.

[0122] In one embodiment of the present invention, the slagging detection module 503 includes:

[0123] Foreign object identification module is used to identify foreign objects on the molten iron in the post-passing area according to the change information of adjacent temperature values;

[0124] A time window adding module is used to generate a time window after the sampling point corresponding to the foreign object;

[0125] The parameter reading module is used to identify the trend of multiple consecutive temperature values ​​within the time window, and to read the silicon content in the component values;

[0126] The slag formation state determination module is used to determine that the slag formation state of the molten iron flowing into the post-passage area is slag already generated if the trend is decreasing and any of the silicon contents exceeds a preset content threshold during the time window.

[0127] In one embodiment of the present invention, the foreign object identification module includes:

[0128] The first temperature difference calculation module is used to calculate the difference between the previous temperature value and the current temperature value as the first temperature difference if the current temperature value is less than the previous temperature value.

[0129] The second temperature difference calculation module is used to calculate the difference between the next temperature value and the current temperature value as the second temperature difference if the next temperature value is greater than the current temperature value.

[0130] The foreign object detection module is used to determine that there is a foreign object on the molten iron in the post-passing area if the first temperature difference is greater than a preset temperature threshold and the second temperature difference is less than a preset temperature threshold.

[0131] In one embodiment of the present invention, the scum cleaning module 504 includes:

[0132] A speed setting module is used to set the speed of the fan;

[0133] A movement control module is used to control the fan to move back and forth along the rear eye area at the speed;

[0134] The gas injection module is used to control the fan to inject gas into the rear eye area at a preset flow rate during movement in order to clean the scum.

[0135] In one embodiment of the present invention, the speed setting module includes:

[0136] The amplitude query module is used to query the amplitude of the temperature value decrease within a time window, which is added after the sampling point when foreign matter is detected on the molten iron in the post-passing area;

[0137] The first value setting module is used to set the first value of the fan as speed if the amplitude is less than a preset reduction threshold.

[0138] The second value setting module is used to set the second value of the fan as speed if the amplitude is greater than a preset reduction threshold.

[0139] The first value is greater than the second value.

[0140] In one embodiment of the present invention, a slide is installed above the rear eye area, the fan is installed in the slide, a first sensing plate is provided at the first end of the slide, a second sensing plate is provided at the second end of the slide, the fan is provided with a first distance probe and a second distance probe, and the length of the interval between the first end and the skimmer is less than the length of the interval between the second end and the skimmer.

[0141] The mobility control module includes:

[0142] The distance detection module is used to drive the first distance probe to measure a first distance value between itself and the first sensing plate, and to drive the second distance probe to measure a second distance value between itself and the second sensing plate.

[0143] An initial movement module is used to control the fan to move from the second end to the first end at the speed;

[0144] The return movement module is used to control the fan to move towards the second end at the speed if the first distance value is less than a preset first distance threshold during the process of the fan moving towards the first end.

[0145] The purging end condition judgment module is used to determine whether the preset purging end condition is met if the second distance value is less than the preset second distance threshold during the process of the fan moving to the second end; if yes, the stop module is called; if no, the continue moving module is called.

[0146] A stop module is used to control the fan to stop moving;

[0147] The continuing movement module is used to control the fan to move towards the first end at the speed specified.

[0148] The slag treatment device for blast furnace tapping provided in this embodiment of the invention can perform the slag treatment method for blast furnace tapping provided in any embodiment of the invention, and has the corresponding functional modules and beneficial effects for performing the slag treatment method for blast furnace tapping.

[0149] Example 3

[0150] Figure 6A schematic diagram of an electronic device 10 that can be used to implement embodiments of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0151] like Figure 6 As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 may also store various programs and data required for the operation of the electronic device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0152] Multiple components in electronic device 10 are connected to I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of displays, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0153] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, central processing unit (CPU), graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, digital signal processors (DSPs), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as the slag treatment method for blast furnace tapping.

[0154] In some embodiments, the blast furnace tapping slag treatment method can be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed on electronic device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the blast furnace tapping slag treatment method described above can be performed. Alternatively, in other embodiments, processor 11 can be configured to perform the blast furnace tapping slag treatment method by any other suitable means (e.g., by means of firmware).

[0155] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0156] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0157] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0158] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0159] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or computing systems that include middleware components (e.g., application servers), or computing systems that include frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0160] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0161] Example 4

[0162] This invention also provides a computer program product, which includes a computer program that, when executed by a processor, implements the slag treatment method for blast furnace tapping as provided in any embodiment of this invention.

[0163] In implementing the computer program product, computer program code for performing the operations of this invention can be written in one or more programming languages ​​or a combination thereof. Programming languages ​​include object-oriented programming languages ​​such as Java, Smalltalk, and C++, as well as conventional procedural programming languages ​​such as C or similar languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0164] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0165] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method for treating slag from blast furnace tapping, characterized in that, A slag skimmer and a post-passage area are provided on the main trough of the blast furnace. A detector and a blower are installed above the post-passage area. The detector includes a temperature probe located at the inlet of the post-passage area and a composition probe located in the middle of the post-passage area. The method includes: When the blast furnace discharges molten iron into the main ditch, the temperature probe and the composition probe are activated; At multiple sampling points, the temperature probe is driven to detect the temperature value of the molten iron flowing into the post-passage area, and the composition probe is driven to detect the composition value of the molten iron flowing into the post-passage area. The slag formation state of the molten iron flowing into the post-passage area is detected based on the temperature and composition values. If the slagging state is that scum has been generated, the blower is driven to spray gas into the rear eye area to clean the scum.

2. The method according to claim 1, characterized in that, When molten iron is discharged from the blast furnace to the main ditch, activating the temperature probe and the composition probe includes: Receive the tapping signal generated by the blast furnace, the tapping signal indicating that molten iron is being discharged from the blast furnace into the main ditch; After receiving the iron tapping signal, wait for a preset time period; If the specified time period is exceeded, the temperature probe and the composition probe will be activated.

3. The method according to claim 1, characterized in that, The method of detecting the slag formation state of molten iron flowing into the post-passage region based on the temperature and composition values ​​includes: Based on the change information of adjacent temperature values, foreign objects are identified on the molten iron in the post-passage area; A time window is generated after the sampling point corresponding to the foreign object; Within the time window, trends of multiple consecutive temperature values ​​are identified, and the silicon content in the composition values ​​is read; If, within the time window, the trend is decreasing and any of the silicon contents exceeds a preset content threshold, then the slag state of the molten iron flowing into the post-passage area is determined to be that slag has been generated.

4. The method according to claim 3, characterized in that, The step of identifying foreign objects on the molten iron in the subsequent pass-through area based on the change information of adjacent temperature values ​​includes: If the current temperature value is less than the previous temperature value, then the difference between the previous temperature value and the current temperature value is calculated as the first temperature difference; If the next temperature value is greater than the current temperature value, then the difference between the next temperature value and the current temperature value is calculated as the second temperature difference; If the first temperature difference is greater than a preset temperature threshold and the second temperature difference is less than a preset temperature threshold, then it is determined that there is a foreign object on the molten iron in the post-passage area.

5. The method according to any one of claims 1-2, characterized in that, The method of driving the fan to spray gas into the rear eye area to remove the scum includes: Set the speed for the fan; The fan is controlled to move back and forth along the rear eye area at the speed described. During the movement, the fan is controlled to spray gas into the rear eye area at a preset flow rate to clean the scum.

6. The method according to any one of claims 3-4, characterized in that, The method of driving the fan to spray gas into the rear eye area to remove the scum includes: Set the speed for the fan; The fan is controlled to move back and forth along the rear eye area at the speed described. During the movement, the fan is controlled to spray gas into the rear eye area at a preset flow rate to clean the scum.

7. The method according to claim 6, characterized in that, Setting the speed of the fan includes: The query determines the magnitude of the temperature decrease within a time window, which is added after the sampling point when foreign matter is detected on the molten iron in the post-passage area; If the amplitude is less than the preset reduction threshold, then the first value for the fan is set as speed; If the magnitude is greater than the preset reduction threshold, then the second value for the fan is set as speed; The first value is greater than the second value.

8. The method according to claim 7, characterized in that, A slide is installed above the rear eye area, and a fan is installed in the slide. A first sensing plate is provided at the first end of the slide and a second sensing plate is provided at the second end of the slide. The fan is provided with a first distance probe and a second distance probe. The length of the interval between the first end and the skimmer is less than the length of the interval between the second end and the skimmer. Controlling the fan to move back and forth along the rear eye region at the speed includes: The first distance probe is driven to measure the first distance value between itself and the first sensing plate, and the second distance probe is driven to measure the second distance value between itself and the second sensing plate. The fan is controlled to move from the second end to the first end at the speed specified. During the process of the fan moving towards the first end, if the first distance value is less than the preset first distance threshold, the fan is controlled to move towards the second end at the speed. During the process of the fan moving towards the second end, if the second distance value is less than the preset second distance threshold, it is determined whether the preset purging end condition is met. If so, then control the fan to stop moving; If not, then control the fan to move towards the first end at the speed stated above.

9. A slag treatment device for blast furnace tapping, characterized in that, A slag skimmer and a post-passage area are provided on the main trough of the blast furnace. A detector and a blower are installed above the post-passage area. The detector includes a temperature probe located at the inlet of the post-passage area and a composition probe located in the middle of the post-passage area. The device includes: The probe activation module is used to activate the temperature probe and the composition probe when the blast furnace discharges molten iron into the main ditch; The molten iron monitoring module is used to drive the temperature probe at multiple sampling points to detect the temperature value of the molten iron flowing into the post-passage area, and to drive the composition probe to detect the composition value of the molten iron flowing into the post-passage area. The slag detection module is used to detect the slag state of the molten iron flowing into the post-passage area based on the temperature value and the composition value. The scum removal module is used to drive the blower to spray gas into the rear eye area to remove the scum if the scum formation state is that scum has been generated.

10. An electronic device, characterized in that, The electronic device includes: At least one processor; and A memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the slag treatment method for blast furnace tapping according to any one of claims 1-8.

11. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the slag treatment method for blast furnace tapping as described in any one of claims 1-8.

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