A method, device, equipment and storage medium for ladling molten iron

Abstract

The present invention discloses a method, device, equipment and storage medium for packing molten iron in a molten iron ladle. The method includes: obtaining the temperature distribution along the axial direction on the surface of the molten iron ladle, determining the liquid level height of the molten iron in the molten iron ladle based on the temperature distribution, calculating the thickness of the slag cover layer and the thickness of the gas layer between the slag cover layer and the molten iron based on the liquid level height, determining a molten iron packing plan based on the thickness of the slag cover layer and the thickness of the gas layer, and when adding molten iron, using the heat of the molten iron to melt the slag cover layer, and at the same time, avoiding the occurrence of detonation phenomena, saving labor costs while improving safety.

Description

Technical Field

[0001] The present invention relates to smelting technology, and particularly to a method, device, equipment and storage medium for packing molten iron in a molten iron ladle. Background Art

[0002] A molten iron ladle is a device used to hold molten iron during the blast furnace production process. During the blast furnace production process, the produced molten iron and slag are both discharged from the taphole. The molten iron and slag are in a mixed state inside the blast furnace hearth. After flowing out through the taphole, the slag and iron are separated in the main trough, the molten iron flows into the ladle, and the slag flows into the slag trough.

[0003] There is a slag skimmer on the main trough in front of the blast furnace. During the process of discharging slag and iron, as the operation time of the slag skimmer prolongs, it is inevitable that gaps and other situations occur, which will inevitably cause the slag to follow the molten iron into the molten iron ladle. When the slag enters the molten iron ladle, with the increase of the slag amount, the phenomenon of slag capping on the surface of the molten iron occurs frequently, especially in winter with relatively low weather temperature or in rainy weather. Since the molten iron ladle needs to be transferred between ironmaking and steelmaking, the longer the transfer time, the more slag the molten iron ladle contains. Under the background of relatively low ambient temperature, the slag capping phenomenon on the surface of the molten iron ladle is prominent. After the slag capping on the surface of the molten iron ladle, if the slag amount is large, the capping will be thicker. As the transfer time of the lower molten iron prolongs, the temperature will inevitably decrease, and the volume of the molten iron will shrink, forming a space between the slag cover and the molten iron, resulting in the layering phenomenon of the molten iron ladle. After the slag capping on the surface of the molten iron ladle and the layering with the lower molten iron occur, a series of chemical reactions still occur among a large number of impurities and compounds in the lower molten iron (especially when adding scrap steel into the molten iron ladle for smelting), and the generated gases accumulate in the layer.

[0004] When a layered slag cover forms on the surface of the hot metal ladle, if the ladle is no longer used for charging hot metal, the method of cutting the surface slag cover is always adopted to break the layering phenomenon. If the ladle contains only partial hot metal, more hot metal needs to be charged into the ladle to meet the steelmaking requirements. For a ladle with partial hot metal, the thickness of the upper slag cover is relatively thick. When charging hot metal again, the operators and video monitoring simply cannot determine whether there is a layering phenomenon in the ladle. When the operators charge hot metal into the ladle again, a large amount of hot metal is on the surface of the slag cover. As the amount of surface hot metal increases, the surface hot metal covers the slag cover on the surface of the ladle, forming a second sealed space. The gas in the layering area holds up the upper slag cover and hot metal. As the amount of hot metal charged above the slag cover increases rapidly, the gravity of the hot metal increases. Coupled with the fact that the high-temperature hot metal gradually melts the slag cover layer, under the huge gravity of the hot metal, the slag cover layer breaks, and the upper hot metal instantly enters the lower part of the ladle, breaking the layering space. The gas inside the space rapidly rushes out to the outside under the condition of a sharp increase in temperature. During the rushing-out process, a large amount of slag and iron is inevitably carried out of the ladle, seriously affecting the safety of the regional operators and equipment. The hot metal that is blown out and falls outside the ladle poses a great safety risk. If the layering space is large and the amount of gas rushing out is large, there will also be a detonation phenomenon.

[0005] At present, the blast furnace does not have a suitable method for judging whether the hot metal ladle is layered. It is judged by combining video monitoring with manual visual observation, which increases the labor intensity of the operators and the accuracy of judgment is extremely low. Sometimes, when it is found that the surface of the hot metal ladle is covered with a slag cover, in order to avoid the detonation phenomenon, the operators need to use oxygen to burn a hole in the slag cover to release the gas inside the layering. Even if it is visually observed that there is a slag cover on the surface of the hot metal ladle and there is no layering between the slag cover and the hot metal, the organization still burns through the slag cover layer with oxygen, which wastes the labor force generated by burning the slag cover in vain and increases the labor intensity of the operators. Summary of the Invention

[0006] The present invention provides a method, device, equipment and storage medium for charging hot metal into a hot metal ladle, which improves safety and saves labor costs at the same time.

[0007] In a first aspect, the present invention provides a method for charging hot metal into a hot metal ladle, including:

[0008] Obtain the temperature distribution along the axis on the surface of the hot metal ladle;

[0009] Determine the liquid level height of the hot metal in the hot metal ladle based on the temperature distribution;

[0010] Calculate the thickness of the slag cover layer and the thickness of the gas layer between the slag cover layer and the hot metal based on the liquid level height;

[0011] Determine the hot metal charging plan based on the thickness of the slag cover layer and the thickness of the gas layer.

[0012] Optionally, determining the liquid level height of the molten iron in the ladle based on the temperature distribution includes:

[0013] Determining a target temperature characterizing the molten iron liquid level;

[0014] Determining the height corresponding to the target temperature from the temperature distribution as the liquid level height of the molten iron in the ladle.

[0015] Optionally, calculating the thickness of the slag cover layer and the thickness of the gas layer between the slag cover layer and the molten iron based on the liquid level height includes:

[0016] Calculating the weight of the molten iron in the ladle based on the liquid level height of the molten iron;

[0017] Calculating the difference between the total weight of the slag-iron mixture in the ladle and the weight of the molten iron to obtain the weight of the slag cover layer;

[0018] Calculating the thickness of the slag cover layer based on the weight of the slag cover layer;

[0019] Calculating the difference between the surface height of the slag cover layer and the thickness of the slag cover layer to obtain the total height of the gas layer and the molten iron;

[0020] Calculating the difference between the total height of the gas layer and the molten iron layer and the liquid level height of the molten iron to obtain the thickness of the gas layer.

[0021] Optionally, determining the molten iron charging scheme based on the thickness of the slag cover layer and the thickness of the gas layer includes:

[0022] When the thickness of the slag cover layer is less than the first preset thickness, controlling the swing nozzle to inject molten iron into the ladle at a normal flow rate.

[0023] Optionally, determining the molten iron charging scheme based on the thickness of the slag cover layer and the thickness of the gas layer further includes:

[0024] When the thickness of the slag cover layer is greater than or equal to the first preset thickness and less than or equal to the second preset thickness, determining whether the distance between the surface of the slag cover layer and the upper edge of the ladle is greater than the first preset distance;

[0025] When the distance between the surface of the slag cover layer and the upper edge of the ladle is greater than the first preset distance, controlling the swing nozzle to inject molten iron into the ladle at a normal flow rate;

[0026] When the distance between the surface of the slag cover layer and the upper edge of the ladle is less than or equal to the first preset distance, determining whether the thickness of the gas layer is greater than the preset thickness;

[0027] When the thickness of the gas layer is greater than a preset thickness, control the swing tundish to inject molten iron into the ladle at a first flow rate, so that the molten iron melts the slag cover layer before completely covering the slag cover layer, and the first flow rate is less than the normal flow rate;

[0028] When the thickness of the gas layer is less than or equal to the preset thickness, control the swing tundish to inject molten iron into the ladle at the normal flow rate.

[0029] Optionally, determining a molten iron loading plan based on the thickness of the slag cover layer and the thickness of the gas layer further includes:

[0030] When the thickness of the slag cover layer is greater than a second preset thickness, control the swing tundish to inject molten iron into the ladle at a second flow rate, and the second flow rate is less than the first flow rate, wherein the second flow rate is inversely correlated with the thickness of the slag cover layer.

[0031] Optionally, the method for loading molten iron into a ladle further includes:

[0032] Judge whether the distance between the surface of the slag cover layer and the upper edge of the ladle is less than a second preset distance;

[0033] If so, control to cut the slag cover layer.

[0034] In a second aspect, the present invention further provides a molten iron loading device for a ladle, including:

[0035] A temperature distribution acquisition module, configured to acquire the axial temperature distribution on the surface of the ladle;

[0036] A liquid level height determination module, configured to determine the liquid level height of the molten iron in the ladle based on the temperature distribution;

[0037] A thickness calculation module, configured to calculate the thickness of the slag cover layer and the thickness of the gas layer between the slag cover layer and the molten iron based on the liquid level height;

[0038] A molten iron loading plan determination module, configured to determine a molten iron loading plan based on the thickness of the slag cover layer and the thickness of the gas layer.

[0039] In a third aspect, the present invention further provides an electronic device, including:

[0040] One or more processors;

[0041] A memory, configured to store one or more programs;

[0042] When the one or more programs are executed by the one or more processors, the one or more processors implement the method for loading molten iron into a ladle as provided in the first aspect of the present invention.

[0043] Fourthly, the present invention also provides a computer-readable storage medium, on which a computer program is stored. When the program is executed by a processor, it implements the method for packing molten iron in a molten iron ladle provided in the first aspect of the present invention.

[0044] The method for packing molten iron in a molten iron ladle provided by the present invention includes: obtaining the axial temperature distribution on the surface of the molten iron ladle, determining the liquid level height of the molten iron in the molten iron ladle based on the temperature distribution, calculating the thickness of the slag cover layer and the thickness of the gas layer between the slag cover layer and the molten iron based on the liquid level height, determining the molten iron packing plan based on the thickness of the slag cover layer and the thickness of the gas layer. When adding molten iron, the heat of the molten iron is used to melt the slag cover layer, and at the same time, the occurrence of detonation is avoided, saving labor costs while improving safety.

[0045] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present invention, nor is it used to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0047] Figure 1 It is a flowchart of a method for packing molten iron in a molten iron ladle provided by an embodiment of the present invention;

[0048] Figure 2 It is a schematic structural diagram of a device for packing molten iron in a molten iron ladle provided by an embodiment of the present invention;

[0049] Figure 3 It is a schematic structural diagram of an electronic device provided by an embodiment of the present invention.

[0050] Through the above drawings, the clear embodiments of the present application have been shown, and there will be more detailed descriptions hereinafter. These drawings and text descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0051] To enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0052] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0053] Figure 1 The flowchart of a method for packing molten iron in a molten iron ladle provided by an embodiment of the present invention. This embodiment is applicable to the case of automatically adding molten iron when forming a slag cover layer on the surface of the molten iron ladle. This method can be executed by the molten iron packing molten iron device provided by the embodiment of the present invention. This device can be implemented in a software and / or hardware manner and is usually configured in an electronic device, such as Figure 1 As shown, the method for packing molten iron in a molten iron ladle includes the following steps:

[0054] S101. Obtain the temperature distribution along the axis on the surface of the molten iron ladle.

[0055] In the embodiment of the present invention, the temperatures of multiple points along the axis on the surface of the molten iron ladle are measured, and the corresponding relationship between the temperature and the height of the points is established to obtain the temperature distribution along the axis on the surface of the molten iron ladle.

[0056] S102. Determine the liquid level height of the molten iron in the molten iron ladle based on the temperature distribution.

[0057] After obtaining the temperature distribution along the axis on the surface of the molten iron ladle, the liquid level height of the molten iron in the molten iron ladle is determined based on the temperature distribution.

[0058] Exemplarily, first, determine the target temperature characterizing the molten iron level, and determine the height corresponding to the target temperature from the temperature distribution as the molten iron level height in the ladle. Since there is a layer separation between the molten iron and the slag cover layer in the ladle, the separation space is filled with air and other gases, and the heat conduction between the molten iron and the slag cover layer is poor (the thermal conductivity of air is low). Therefore, only a very small amount of the thermal energy of the molten iron inside the ladle is transferred to the slag cover layer, and the temperature of the slag cover layer drops significantly. The molten iron level height in the ladle can be accurately determined by the target temperature characterizing the molten iron level.

[0059] S103. Calculate the thickness of the slag cover layer and the thickness of the gas layer between the slag cover layer and the molten iron based on the liquid level height.

[0060] In an embodiment of the present invention, calculate the thickness of the slag cover layer and the thickness of the gas layer between the slag cover layer and the molten iron based on the molten iron level height.

[0061] Exemplarily, in some embodiments of the present invention, calculate the weight of the molten iron in the ladle based on the molten iron level height, calculate the difference between the total weight of the slag-iron mixture in the ladle and the weight of the molten iron to obtain the weight of the slag cover layer, calculate the thickness of the slag cover layer based on the weight of the slag cover layer, calculate the difference between the surface height of the slag cover layer and the thickness of the slag cover layer to obtain the total height of the gas layer and the molten iron, and calculate the difference between the total height of the gas layer and the molten iron layer and the molten iron level height to obtain the thickness of the gas layer.

[0062] Exemplarily, when the ladle is filled with a part of molten iron and there is a slag cover layer on the surface of the molten iron, predict the stratification space between the slag cover layer and the molten iron. The density of the molten iron is 7.3 tons / m 3 and the density of the slag cover layer is 3.0 tons / m 3, when the ladle is empty, the total height is H0. When the ladle is pulled to the position ready to be filled with hot metal, the surface height H1 of the slag cover layer is measured by a radar level gauge. The height of the upper edge of the ladle is a fixed value H, the diameter of the ladle is R, the height difference ΔH between the surface position of the slag cover layer and the upper edge of the ladle is ΔH = H - H1, and the space volume V1 that the ladle can be filled with hot metal again is V1 = π*(R / 2)²*ΔH. The weight of the hot metal that can be continuously filled is 7.3*V1. The space volume below the slag cover layer of the ladle is: V2 = π*(R / 2)²*(H1 - H0). The total weight of the slag-iron mixture (lower hot metal, slag in the slag cover layer) inside the ladle is M (the total weight obtained by electronic weighing of the ladle). The temperature of the ladle shell is detected in the ladle position area. The temperature t1 of the ladle shell at the upper surface of the slag cover is detected. From the horizontal line of the upper surface layer downward, the temperature of the ladle shell gradually increases. When the temperature t2 (i.e., the target temperature) increases significantly at a certain point, it is initially judged as the position of the hot metal liquid level inside the ladle, and the horizontal position of this point is recorded and the hot metal liquid level height H3 is calculated. The weight of the hot metal in the ladle is initially calculated as M1 = π*(R / 2)²*(H3 - H0)*7.3. The weight of the slag cover layer in the ladle is M2 = M - M1. The thickness L of the slag cover layer = (slag weight) M2÷3.0÷(π*(R / 2)²); the thickness L1 of the gas layer = H1 - L - H3.

[0063] S104. Determine the hot metal filling plan based on the thickness of the slag cover layer and the thickness of the gas layer.

[0064] In the embodiment of the present invention, the hot metal filling plan is determined based on the thickness of the slag cover layer and the thickness of the gas layer, so that when filling hot metal, the heat of the hot metal is used to melt the slag cover layer, and at the same time, the phenomenon of detonation is avoided, and while improving safety, the labor cost is saved.

[0065] Exemplarily, when the thickness of the slag cover layer is less than the first preset thickness (for example, 30 mm), regardless of the thickness of the gas layer, the swinging nozzle is controlled to inject hot metal into the ladle at a normal flow rate, and all the hot metal flow out of the blast furnace taphole enters the slag cover area of the ladle. Due to the thin thickness of the slag cover layer, when filling hot metal, when the hot metal flows into the slag cover of the ladle at a flow rate of 5 tons per minute horizontally, the high-temperature hot metal can instantly penetrate the slag cover, and the pressure is quickly released in the layer, and there will be no phenomenon that the hot metal floats on the slag cover layer. The principle of this step: the temperature of the blast furnace hot metal is about 1500 °C. When it contacts the surface of the slag cover, the surface temperature of the slag cover is measured at room temperature. It takes about 1 minute (obtained from on-site practice) to melt 30 mm thick slag. During this time, the total weight of the hot metal entering the surface of the slag cover is about 2 - 5 tons. Even at the maximum flow rate of 5 tons, it cannot completely cover the slag cover layer on the surface of the ladle (the internal diameter R of the ladle is calculated as 2 meters, the surface area is π*(R / 2)², and the weight of 30 mm thick hot metal is about 6.6 tons. At a hot metal flow rate of 5 tons per minute, it takes at least 1.3 minutes to complete).

[0066] When the thickness of the slag cover layer is greater than or equal to the first preset thickness (30 mm) and less than or equal to the second preset thickness (50 mm), it is judged whether the distance between the surface of the slag cover layer and the upper edge of the ladle is greater than the first preset distance (for example, half of the total height of the ladle).

[0067] When the distance between the surface of the slag cover layer and the upper edge of the ladle is greater than the first preset distance, control the swing nozzle to inject molten iron into the ladle at a normal flow rate. That is, the volume occupied by the weight of the molten iron inside the ladle is less than 50% of the total volume of the ladle. At this time, even if the molten iron covers the surface layer of the slag cover, when the slag cover layer is melted, the molten iron and the slag cover will collapse into the ladle as a whole, and a certain degree of molten iron splash will occur. However, due to the large volume space of the ladle, the phenomenon of molten iron splashing outside will not be caused.

[0068] When the distance between the surface of the slag cover layer and the upper edge of the ladle is less than or equal to the first preset distance, it is judged whether the thickness of the gas layer is greater than the preset thickness (for example, 100 mm).

[0069] When the thickness of the gas layer is greater than the preset thickness, control the swing nozzle to inject molten iron into the ladle at the first flow rate, so that the molten iron melts the slag cover layer before completely covering it. The first flow rate is less than the normal flow rate. Exemplarily, according to the measurement of the slag cover layer thickness of 50 mm, 10.99 tons of molten iron are required to reach a thickness of 50 mm. It takes about 2 minutes for the high-temperature molten iron to melt the 50 mm thick slag. Therefore, when loading molten iron, by adjusting the angle of the swing nozzle, control the flow rate of the molten iron flowing into the ladle < 5 tons per minute. Generally, it is more appropriate to choose a level close to 5 tons, between 4.5 - 4.9 tons per minute. In this way, the slag cover layer can be melted quickly, and the speed of loading molten iron can also be increased. Before the molten iron completely covers the slag cover layer, the slag cover layer is melted to avoid the occurrence of detonation.

[0070] When the thickness of the gas layer is less than or equal to the preset thickness (for example, 100 mm), control the swing nozzle to inject molten iron into the ladle at a normal flow rate. Since the thickness of the gas layer is less than or equal to the preset thickness, even if the molten iron covers the surface layer of the slag cover, when the slag cover layer is melted, the molten iron and the slag cover will collapse into the ladle as a whole. However, due to the small thickness of the gas layer, the phenomenon of molten iron splashing outside will not be caused.

[0071] Exemplarily, when the thickness of the slag cover layer is greater than the second preset thickness (50 mm), the swinging tundish is controlled to inject molten iron into the ladle at a second flow rate, and the second flow rate is less than the first flow rate, wherein the second flow rate is inversely related to the thickness of the slag cover layer. Exemplarily, when the thickness L of the slag cover layer is greater than 50 mm, the flow rate of the molten iron entering the ladle is continuously reduced according to the thickness of the slag cover layer, and the landing point of the molten iron remains stable. At the landing point, the molten slag of the molten slag cover layer is impacted by the gravity and temperature of the high-temperature molten iron, and the molten iron will not cover the slag cover layer. The thicker the slag cover layer, the smaller the initial flow rate of the molten iron flowing into the ladle. When selecting the flow rate, select the corresponding maximum flow rate. By operating in this way, it is convenient for the molten iron to form a sealing layer on the surface of the slag cover at the slowest speed when piercing the slag cover layer.

[0072] During the above process of loading molten iron, it is controlled to continue to maintain a very small stratification between the molten iron surface and the slag cover layer, and a space of 10 - 20 mm is controlled between the molten iron surface and the slag cover layer for heat preservation of the molten iron in the ladle. If the molten iron surface comes into contact with the slag cover, the thermal conductivity of the slag is high, resulting in a large loss of the molten iron temperature, which is not conducive to maintaining the temperature of the molten iron inside the ladle.

[0073] In some embodiments of the present invention, the method for loading molten iron into a ladle further includes:

[0074] Judging whether the distance between the surface of the slag cover layer and the upper edge of the ladle is less than the second preset distance (for example, 300 mm). If so, it means that the ladle is already full and no molten iron loading operation is required for this ladle. Then, it is necessary to control the cutting equipment to separately cut the slag cover layer on the surface of the ladle.

[0075] The method for loading molten iron into a ladle provided by the embodiments of the present invention includes: obtaining the temperature distribution along the axis of the ladle surface, determining the liquid level height of the molten iron in the ladle based on the temperature distribution, calculating the thickness of the slag cover layer and the thickness of the gas layer between the slag cover layer and the molten iron based on the liquid level height, determining the molten iron loading scheme based on the thickness of the slag cover layer and the thickness of the gas layer. When adding molten iron, the heat of the molten iron is used to melt the slag cover layer, and at the same time, the occurrence of detonation is avoided, saving labor costs while improving safety.

[0076] Figure 2 It is a schematic structural diagram of a device for loading molten iron into a ladle provided by an embodiment of the present invention. As Figure 2 shown, the device for loading molten iron into a ladle includes:

[0077] A temperature distribution acquisition module 201 for obtaining the temperature distribution along the axis of the ladle surface;

[0078] A liquid level height determination module 202 for determining the liquid level height of the molten iron in the ladle based on the temperature distribution;

[0079] A thickness calculation module 203, configured to calculate the thickness of the slag cover layer and the thickness of the gas layer between the slag cover layer and the molten iron based on the liquid level height;

[0080] A molten iron charging plan determination module 204, configured to determine a molten iron charging plan based on the thickness of the slag cover layer and the thickness of the gas layer.

[0081] In some embodiments of the present invention, the liquid level height determination module 202 includes:

[0082] A target temperature determination sub-module, configured to determine a target temperature characterizing the molten iron liquid level;

[0083] A liquid level height determination sub-module, configured to determine, from the temperature distribution, the height corresponding to the target temperature as the liquid level height of the molten iron in the ladle.

[0084] In some embodiments of the present invention, the thickness calculation module 203 includes:

[0085] A molten iron weight calculation sub-module, configured to calculate the weight of the molten iron in the ladle based on the liquid level height of the molten iron;

[0086] A slag cover weight calculation sub-module, configured to calculate the difference between the total weight of the slag-iron mixture in the ladle and the weight of the molten iron to obtain the weight of the slag cover layer;

[0087] A slag cover thickness calculation sub-module, configured to calculate the thickness of the slag cover layer based on the weight of the slag cover layer;

[0088] A height calculation sub-module, configured to calculate the difference between the surface height of the slag cover layer and the thickness of the slag cover layer to obtain the total height of the gas layer and the molten iron;

[0089] A gas thickness calculation sub-module, configured to calculate the difference between the total height of the gas layer and the molten iron layer and the liquid level height of the molten iron to obtain the thickness of the gas layer.

[0090] In some embodiments of the present invention, the molten iron charging plan determination module 204 includes:

[0091] A first control sub-module, configured to control the swinging tundish to inject molten iron into the ladle at a normal flow rate when the thickness of the slag cover layer is less than a first preset thickness.

[0092] In some embodiments of the present invention, the molten iron charging plan determination module 204 further includes:

[0093] A first judgment sub-module, configured to judge whether the distance between the surface of the slag cover layer and the upper edge of the ladle is greater than a first preset distance when the thickness of the slag cover layer is greater than or equal to the first preset thickness and less than or equal to a second preset thickness;

[0094] The second control sub-module is used to control the swinging tundish to inject molten iron into the ladle at a normal flow rate when the distance between the surface of the slag cover layer and the upper edge of the ladle is greater than a first preset distance;

[0095] The first judgment sub-module is used to judge whether the thickness of the gas layer is greater than a preset thickness when the distance between the surface of the slag cover layer and the upper edge of the ladle is less than or equal to the first preset distance;

[0096] The third control sub-module is used to control the swinging tundish to inject molten iron into the ladle at a first flow rate when the thickness of the gas layer is greater than the preset thickness, so that the molten iron melts the slag cover layer before completely covering the slag cover layer, and the first flow rate is less than the normal flow rate;

[0097] The fourth control sub-module is used to control the swinging tundish to inject molten iron into the ladle at a normal flow rate when the thickness of the gas layer is less than or equal to the preset thickness.

[0098] In some embodiments of the present invention, the molten iron ladle charging scheme determination module 204 further includes:

[0099] The fifth control sub-module is used to control the swinging tundish to inject molten iron into the ladle at a second flow rate when the thickness of the slag cover layer is greater than a second preset thickness, and the second flow rate is less than the first flow rate, wherein the second flow rate is inversely related to the thickness of the slag cover layer.

[0100] In some embodiments of the present invention, the molten iron ladle charging device further includes:

[0101] The judgment module is used to judge whether the distance between the surface of the slag cover layer and the upper edge of the ladle is less than a second preset distance;

[0102] The cutting module is used to control the cutting of the slag cover layer when the distance between the surface of the slag cover layer and the upper edge of the ladle is less than the second preset distance.

[0103] The above-mentioned molten iron ladle charging device can execute the molten iron ladle charging method provided by the foregoing embodiments of the present invention, and has corresponding functional modules and beneficial effects for executing the molten iron ladle charging method.

[0104] Figure 3A schematic structural diagram of an electronic device provided by an embodiment of the present invention. 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, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or claimed herein.

[0105] As Figure 3 shown, the electronic device includes at least one processor 11, and a memory communicatively connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc. The memory stores a computer program executable by the at least one processor. The processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 into the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. The input / output (I / O) interface 15 is also connected to the bus 14.

[0106] Multiple components in the electronic device are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a magnetic disk, an optical disc, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0107] The processor 11 can be various general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of the processor 11 include but are not limited to a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as the method of ladling molten iron into a ladle.

[0108] In some embodiments, the method of ladle-packing molten iron can be implemented as a computer program tangibly embodied 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 onto the electronic device 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 method of ladle-packing molten iron described above can be performed. Alternatively, in other embodiments, processor 11 can be configured to perform the method of ladle-packing molten iron by any other suitable means (e.g., by means of firmware).

[0109] The various implementations of the systems and techniques described above in this document can be implemented in digital electronic circuitry, integrated circuit systems, field programmable gate arrays (FPGA), application specific integrated circuits (ASIC), application specific standard products (ASSP), systems on a chip (SOC), complex programmable logic devices (CPLD), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special-purpose or general-purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit the data and instructions to the storage system, the at least one input device, and the at least one output device.

[0110] The computer programs for implementing the methods of the present invention can be written in any combination of one or more programming languages. These computer programs can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when the computer programs are executed by the processor, the functions / operations specified in the flowcharts and / or block diagrams are implemented. The computer programs can be executed entirely on the machine, partially on the machine, as a stand-alone software package partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0111] In the context of the present invention, a computer-readable storage medium can be a tangible medium that can contain or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer-readable storage medium can include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. Alternatively, the computer-readable storage medium can be a machine-readable signal medium. More specific examples of the machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0112] To provide for 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 a pointing device (e.g., a mouse or a trackball) by which the user can provide input to the electronic device. Other kinds of devices can also be used to provide for 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 acoustic input, voice input, or tactile input).

[0113] The systems and techniques described herein can be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer having a graphical user interface or a web browser through which the user can interact with an implementation of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0114] A computing system may include a client and a server. The client and the server are generally far from each other and usually interact via a communication network. The relationship between the client and the server is created by computer programs that run on respective computers and have a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or a cloud host, which is a host product in the cloud computing service system, solving the defects of difficult management and weak business scalability existing in traditional physical hosts and VPS services.

[0115] An embodiment of the present invention also provides a computer program product, including a computer program which, when executed by a processor, implements the molten iron packaging method for molten iron as provided in any embodiment of the present application.

[0116] In the process of implementing the computer program product, computer program code for performing the operations of the present invention can be written in one or more programming languages or combinations thereof. The programming languages include object-oriented programming languages such as Java, Smalltalk, C++, and also include conventional procedural programming languages such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, executed as an independent software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any type of network - including a local area network (LAN) or a wide area network (WAN) - or can be connected to an external computer (for example, by using an Internet service provider to connect through the Internet).

[0117] It should be understood that various forms of the processes shown above can be used, reordering, adding, or deleting steps. For example, the steps recited in the present invention can be executed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved, and no limitation is made herein.

[0118] The above specific embodiments do not constitute a limitation to the protection scope of the present 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 principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for packing molten iron in a molten iron ladle, characterized in that, Including: Obtain the axial temperature distribution on the surface of the hot metal ladle; Determine the liquid level height of the hot metal in the hot metal ladle based on the temperature distribution; Calculate the thickness of the slag cover layer and the thickness of the gas layer between the slag cover layer and the hot metal based on the liquid level height; Determine the hot metal charging plan based on the thickness of the slag cover layer and the thickness of the gas layer; Determine the hot metal charging plan based on the thickness of the slag cover layer and the thickness of the gas layer, including: When the thickness of the slag cover layer is less than the first preset thickness, control the swing nozzle to inject hot metal into the hot metal ladle at a normal flow rate; When the thickness of the slag cover layer is greater than or equal to the first preset thickness and less than or equal to the second preset thickness, determine whether the distance between the surface of the slag cover layer and the upper edge of the hot metal ladle is greater than the first preset distance; When the distance between the surface of the slag cover layer and the upper edge of the hot metal ladle is greater than the first preset distance, control the swing nozzle to inject hot metal into the hot metal ladle at a normal flow rate; When the distance between the surface of the slag cover layer and the upper edge of the hot metal ladle is less than or equal to the first preset distance, determine whether the thickness of the gas layer is greater than the preset thickness; When the thickness of the gas layer is greater than the preset thickness, control the swing nozzle to inject hot metal into the hot metal ladle at a first flow rate so that the hot metal melts the slag cover layer before completely covering the slag cover layer, and the first flow rate is less than the normal flow rate; When the thickness of the gas layer is less than or equal to the preset thickness, control the swing nozzle to inject hot metal into the hot metal ladle at a normal flow rate; When the thickness of the slag cover layer is greater than the second preset thickness, control the swing nozzle to inject hot metal into the hot metal ladle at a second flow rate, and the second flow rate is less than the first flow rate, wherein the second flow rate is inversely correlated with the thickness of the slag cover layer; Determine whether the distance between the surface of the slag cover layer and the upper edge of the hot metal ladle is less than the second preset distance, and the second preset distance is less than the first preset distance; If so, control to cut the slag cover layer.

2. The method for packaging hot metal in a hot metal ladle according to claim 1, wherein, Determine the liquid level height of the hot metal in the hot metal ladle based on the temperature distribution, including: Determine the target temperature characterizing the hot metal liquid level; Determine the height corresponding to the target temperature from the temperature distribution as the liquid level height of the hot metal in the hot metal ladle.

3. The method for packing hot metal in a hot metal ladle according to claim 1, characterized in that, Calculate the thickness of the slag cover layer and the thickness of the gas layer between the slag cover layer and the hot metal based on the liquid level height, including: Calculate the weight of the hot metal in the hot metal ladle based on the liquid level height of the hot metal; Calculate the difference between the total weight of the slag-iron mixture in the hot metal ladle and the weight of the hot metal to obtain the weight of the slag cover layer; Calculate the thickness of the slag cover layer based on the weight of the slag cover layer; Calculate the difference between the surface height of the slag cover layer and the thickness of the slag cover layer to obtain the total height of the gas layer and the hot metal; Calculate the difference between the total height of the gas layer and the hot metal layer and the liquid level height of the hot metal to obtain the thickness of the gas layer.

4. A molten iron packaging molten iron device, characterized in that, For implementing the method according to claim 1, including: A temperature distribution acquisition module for acquiring the axial temperature distribution on the surface of the hot metal ladle; A liquid level height determination module for determining the liquid level height of the hot metal in the hot metal ladle based on the temperature distribution; A thickness calculation module for calculating the thickness of the slag cover layer and the thickness of the gas layer between the slag cover layer and the hot metal based on the liquid level height; A molten iron charging scheme determination module, which is used to determine a molten iron charging scheme based on the thickness of the slag cover layer and the thickness of the gas layer.

5. An electronic device, characterized in that, It includes: One or more processors; A memory for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the molten iron charging method for molten iron packages as described in any one of claims 1-3.

6. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the molten iron charging method for molten iron packages as described in any one of claims 1-3.

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