Automatic cold charge adding and cooling method for argon blowing station

Abstract

The invention provides an automatic cold charge adding and cooling method for an argon blowing station, and belongs to the technical field of steelmaking converter equipment. The automatic cold charge adding and cooling method comprises the following steps: S1, determining the in-station temperature and the out-station temperature of molten steel; s2, a temperature balance model is established, the in-station temperature and the out-station temperature in the step S1 are substituted into the temperature balance model, and the needed cold material weight is obtained; and S3, a cold material is put into the converter, and the weight of the cold material is the weight value calculated in the step S2. According to the automatic cold charge adding and cooling method for the argon blowing station, the temperature balance model is established, the weight value of the cold charge needing to be added into the molten steel is calculated according to the difference value of the in-station temperature and the out-station temperature of the molten steel, and the matched cold charge amount is directly obtained according to the casting lower limit temperature of a continuous casting machine and the collected data; the temperature of a molten steel argon outlet station can be accurately controlled, the temperature of continuous casting molten steel is stabilized, an automatic regulation and control means is achieved, and conditions are created for continuous and efficient production of the continuous casting procedure.

Description

Technical Field

[0001] The invention belongs to the technical field of steel-making converter equipment, and more specifically, relates to an automatic cooling material cooling method of an argon blowing station. Background Art

[0002] The appropriate temperature of continuous casting molten steel is the premise to ensure the continuous and normal production of continuous casting, and is also the basis for obtaining good casting quality. It cannot be too high or too low. If the temperature of molten steel is too low, it will freeze and cause pouring interruption. If the temperature of molten steel is too high, the columnar crystals of the casting will develop, which will promote quality defects such as center segregation, looseness, cracks, etc., and in serious cases, steel leakage accidents will occur.

[0003] The on-site furnace shaker controls the temperature mainly by stabilizing the loading amount and adjusting the amount of scrap steel added according to the composition and temperature of the molten iron to achieve the purpose of stabilizing and balancing the terminal temperature. At the terminal, the furnace shaker judges that the temperature has reached the conditions for steel tapping based on the changes in the flame at the furnace mouth. Most of the judgments are based on experience and cannot accurately control the steel tapping temperature. At the same time, due to the loss of ladle temperature after steel tapping, manual control of argon blowing at the argon station, and manual addition of various cold materials, each process lacks refined and strict control, resulting in unstable temperature control and temperature loss, resulting in a small number of high steel tapping temperatures, causing waste and losses in production costs and processing fees. Summary of the invention

[0004] The object of the present invention is to provide an automatic cooling method for adding cold material in an argon blowing station, aiming to achieve quantitative addition of cold material and improve the temperature control accuracy.

[0005] To achieve the above object, the technical solution adopted by the present invention is to provide an automatic cooling method for cooling materials in an argon blowing station, comprising the following steps:

[0006] S1. Determine the inlet and outlet temperatures of molten steel;

[0007] S2. Establish a temperature balance model, and bring the inlet temperature and outlet temperature in step S1 into the temperature balance model to obtain the required cold material weight;

[0008] S3, adding cold material into the converter, the weight of the cold material being the weight value calculated in step S2;

[0009] In step S2, the calculation formula of the temperature balance model is: (inlet temperature - outlet temperature) × specific heat of molten steel × weight of molten steel = [specific heat of cold material × (melting point of cold material - 25°C) + latent heat of melting of cold material + specific heat of molten steel × (target temperature - melting point of cold material)] × weight of cold material; where the weight of molten steel = weight of molten steel inlet + weight of cold material.

[0010] As another embodiment of the present application, in step S2, the weight of molten steel and the weight of cold material can be calculated by combining the calculation formula of molten steel weight with the temperature balance model. The calculation formula of molten steel weight is: Molten steel weight = molten iron × molten iron recovery rate + iron block × iron block recovery rate + scrap steel × scrap steel recovery rate + self-circulating material × component ratio × self-circulating recovery rate + alloy addition amount × alloy recovery rate; wherein the molten iron recovery rate, iron block recovery rate, scrap steel recovery rate, self-circulating recovery rate and alloy recovery rate are all actual production experience data.

[0011] As another embodiment of the present application, in step S1, after the molten steel enters the converter, the input weight of the molten steel is obtained by the converter weighing assembly below the converter; after the cold material is added in step S3, the output weight of the molten steel is obtained by the converter weighing assembly below the converter; the output weight of the molten steel is compared with the weight of the molten steel calculated in step S2 for verification and control system error correction.

[0012] As another embodiment of the present application, in step S3, cold material is fed into the converter with the aid of a cold material feeding system, and the cold material feeding system includes a first feeding component, a second feeding component and a weighing hopper, the first feeding component is used to transport the cold material in the storage bin to the weighing hopper, and the weight value is obtained by the weighing hopper; until the weight value of the cold material in the weighing hopper reaches the required cold material weight value obtained in step S2, the first feeding component is closed and the second feeding component is opened; the second feeding component is used to transport the cold material in the weighing hopper to the converter.

[0013] As another embodiment of the present application, the first loading assembly includes a hanging rail, a lifting drive and a magnetic suction cup; the hanging rail is horizontally hung above the weighing hopper and extends to the top of the storage bin; the lifting drive is slidably arranged on the hanging rail and has longitudinal freedom, and the lower end of the lifting drive is connected to the magnetic suction cup.

[0014] As another embodiment of the present application, in step S3, the cold material feeding system includes a first-level weighing hopper, a second-level weighing hopper and a third-level weighing hopper, wherein the first-level weighing hopper is directly connected to the first feeding component; the second-level weighing hopper and the third-level weighing hopper are both located on the outlet side of the first-level weighing hopper, for receiving the cold material in the first-level weighing hopper; the capacity of the second-level weighing hopper is 50% of the capacity of the first-level weighing hopper; the capacity of the third-level weighing hopper is 10% of the capacity of the first-level weighing hopper; a second feeding component is provided downstream of the second-level weighing hopper and the third-level weighing hopper; weighing equipment is provided at the lower ends of the first-level weighing hopper, the second-level weighing hopper and the third-level weighing hopper.

[0015] As another embodiment of the present application, in step S3, the cold material is added into the converter in multiple times, and the first amount of cold material added is 50%-80% of the required cold material weight value; the last amount of cold material added is less than 10% of the required cold material weight value.

[0016] As another embodiment of the present application, in step S3, the melting time of each batch of cold material is maintained within 10 minutes, and steps S2 and S3 are repeated until the real-time temperature of the molten steel in the converter is consistent with the set outlet temperature; when repeating steps S2 and S3, the molten steel inlet temperature in step S2 is updated to the real-time temperature of the molten steel in the converter; the required cold material weight calculated in step S2 is used to limit the amount of material fed from the first-stage weighing hopper to the second-stage weighing hopper or the third-stage weighing hopper.

[0017] As another embodiment of the present application, in step S3, the second loading assembly conveys the cold material in the weighing hopper to the preheating silo, which is arranged in the interlayer of the furnace body of the converter and is connected to the inner cavity of the converter by means of a closable valve; the preheating silo is connected to a vibrating conveying device.

[0018] As another embodiment of the present application, a material discharge chute is provided at the inlet end of the preheating silo, and a nitrogen sealing device is provided on the material discharge chute.

[0019] The beneficial effect of the automatic cooling method for adding cold material to an argon blowing station provided by the present invention is that, compared with the prior art, the automatic cooling method for adding cold material to an argon blowing station provided by the present invention establishes a temperature balance model, calculates the weight value of the cold material that needs to be added to the molten steel according to the difference between the inlet temperature and the outlet temperature of the molten steel, and directly obtains the matching cold material amount according to the collected data according to the lower limit temperature of the continuous casting machine, can accurately control the temperature of the molten steel out of the argon station, stabilize the temperature of the continuously cast molten steel, realizes automated control means, and creates conditions for continuous and efficient production of the continuous casting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the structure of an automatic cooling system for cooling materials in an argon blowing station according to an embodiment of the present invention;

[0022] Figure 2 A schematic diagram of a partial cross-sectional structure of a converter provided in an embodiment of the present invention.

[0023] In the figure: 1. Hanging rail; 2. Electric hoist; 3. Storage bin; 4. Magnetic suction cup; 5. First-level weighing hopper; 6. Second-level weighing hopper; 7. Vibrating conveyor; 8. Unloading chute; 9. Nitrogen sealing device; 10. Converter; 11. Interlayer; 12. Preheating bin; 13. Valve port. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] See also Figure 1 and Figure 2 The method for automatically cooling the material by adding cold material in an argon blowing station provided by the present invention is now described. The method for automatically cooling the material by adding cold material in an argon blowing station comprises the following steps:

[0026] S1. Determine the inlet and outlet temperatures of molten steel;

[0027] S2. Establish a temperature balance model, and bring the inlet temperature and outlet temperature in step S1 into the temperature balance model to obtain the required cold material weight;

[0028] S3, adding cold material into the converter 10, the weight of the cold material being the weight value calculated in step S2;

[0029] In step S2, the calculation formula of the temperature balance model is: (inlet temperature - outlet temperature) × specific heat of molten steel × weight of molten steel = [specific heat of cold material × (melting point of cold material - 25°C) + latent heat of melting of cold material + specific heat of molten steel × (target temperature - melting point of cold material)] × weight of cold material; where the weight of molten steel = weight of molten steel inlet + weight of cold material.

[0030] Compared with the prior art, the method for automatically adding cold material to cool down the argon blowing station provided by the present invention establishes a temperature balance model, calculates the weight value of the cold material that needs to be added to the molten steel according to the difference between the inlet temperature and the outlet temperature of the molten steel, and directly obtains the matching cold material amount according to the collected data according to the lower limit temperature of the continuous casting machine. The temperature of the molten steel out of the argon blowing station can be accurately controlled, the temperature of the continuous casting molten steel can be stabilized, and automated control means are realized, creating conditions for continuous and efficient production of the continuous casting process.

[0031] Specifically, a temperature measuring device is set in the converter 10 of the argon blowing station, and the temperature measuring device is electrically connected to the control system and transmits the measured temperature value to the control system. The temperature measuring device can use a temperature sensor to detect the temperature of the molten steel when the molten steel enters the converter 10 of the argon blowing station, and the temperature value is used as the inlet temperature of the molten steel.

[0032] The molten steel outlet temperature is the lower limit temperature of the continuous casting machine. The outlet temperature is the set value, which can be input and modified in real time through the human-computer interaction interface of the control system.

[0033] The control system is an editable human-computer interaction system. The calculation formula of the temperature balance model and the outlet temperature value can be input and modified through the human-computer interaction interface. After the modification, the control system receives and executes it in real time.

[0034] The specific heat of molten steel, specific heat of cold material, melting point of cold material and latent heat of melting of cold material are all obtained through data query. For example, the specific heat capacity of molten steel is 460J / kg℃; the cold material is scrap steel, the specific heat capacity of scrap steel is 670J / kg℃, the melting point of scrap steel is 1500℃, and the latent heat of melting of scrap steel is 271.7KJ / kg.

[0035] Since the converter 10 needs to be weighed when the molten steel enters and leaves the station, the weight of the molten steel when leaving the station is the weight of the molten steel entering the station + the weight of the cold material, and the weight of the molten steel includes the weight of the slag. That is, in step S1, after the molten steel enters the converter 10, the converter weighing component below the converter 10 obtains the weight of the molten steel entering the station, and the weight is recorded as the weight of the molten steel entering the station. After step S3, after the temperature of the molten steel is stable, the converter weighing component obtains the final weight of the molten steel as the weight of the molten steel leaving the station, both of which include the weight of the slag, etc. It can be used to check the calculation formula of the molten steel weight in step S2 and to correct the error of the control system.

[0036] In step S2, the weight of molten steel and the weight of cold material can be calculated by combining the calculation formula of molten steel weight with the temperature balance model. The calculation formula of molten steel weight is: molten steel weight = molten iron × molten iron recovery rate + iron block × iron block recovery rate + scrap steel × scrap steel recovery rate + self-circulating material × component ratio × self-circulating recovery rate + alloy addition amount × alloy recovery rate; wherein the molten iron recovery rate, iron block recovery rate, scrap steel recovery rate, self-circulating recovery rate and alloy recovery rate are all actual production experience data.

[0037] The formula for calculating the weight of molten steel is to classify the raw materials and cold materials into components and calculate them according to the recovery rate corresponding to each component. The weight of molten steel calculated by this method is the weight of all molten steel, excluding the weight of slag.

[0038] When calculating the weight of molten steel, the self-circulating materials include lime, limestone, dolomite, etc. The composition ratio is the weight ratio of each material. The recovery rate can be obtained through actual production experience. The calculation formula of molten steel weight is combined with the calculation formula of the temperature balance model to calculate the weight of cold material and molten steel.

[0039] When the system is calibrated, it is only necessary to compare the weight of slag and molten steel calculated by the calculation formula with the weight detected by the converter weighing component. When the error between the two is within the allowable range, it means that the control system is stable; when the error between the two exceeds the allowable range, it means that there is an error in the converter weighing component or the control system, and further adjustment is required. The adjustment can be made by continuing to add a certain amount of cold material, and updating the calculation data and the displayed weight of the converter weighing component at the same time, and observing the change values ​​of the two.

[0040] In some possible embodiments, see Figure 1In step S3, cold material is added into the converter 10 with the help of a cold material feeding system, and the cold material feeding system includes a first feeding component, a second feeding component and a weighing hopper. The first feeding component is used to transport the cold material in the storage bin 3 to the weighing hopper, and the weight value is obtained by the weighing hopper; until the weight value of the cold material in the weighing hopper reaches the required cold material weight value obtained in step S2, the first feeding component is closed and the second feeding component is opened; the second feeding component is used to transport the cold material in the weighing hopper to the converter 10.

[0041] After the weight of the cold material is calculated, the cold material is fed into the converter 10 through the cold material feeding system. The cold material feeding system includes a device for conveying the cold material in the storage bin 3 to the weighing hopper until the weight of the cold material in the weighing hopper is consistent with the required cold material weight calculated in step S2.

[0042] After the first feeding assembly is closed, the second feeding assembly transports the cold material in the weighing hopper to the converter 10 .

[0043] Specifically, the first loading assembly includes a hanging rail 1, a lifting drive and a magnetic suction cup 4; the hanging rail 1 is horizontally hung above the weighing hopper and extends to the top of the storage bin 3; the lifting drive is slidably arranged on the hanging rail 1 and has longitudinal freedom, and the lower end of the lifting drive is connected to the magnetic suction cup 4.

[0044] One end of the hanging rail 1 is located above the weighing hopper, and the other end extends above the storage bin 3; the lifting drive component arranged on the hanging rail 1 is an electric hoist 2. The electric hoist 2 slides on the hanging rail 1 and is hung with a magnetic chuck 4. The magnetic chuck 4 is an electromagnet, which is energized when cold materials such as scrap steel need to be lifted, and is de-energized when unloading is required.

[0045] The second feeding component is a vibrating conveyor 7 .

[0046] In step S3, the cold material feeding system includes a first-level weighing hopper 5, a second-level weighing hopper 6 and a third-level weighing hopper, wherein the first-level weighing hopper 5 is directly connected to the first feeding component; the second-level weighing hopper 6 and the third-level weighing hopper are both located on the outlet side of the first-level weighing hopper 5, for receiving the cold material in the first-level weighing hopper 5; the capacity of the second-level weighing hopper 6 is 50% of the capacity of the first-level weighing hopper 5; the capacity of the third-level weighing hopper is 10% of the capacity of the first-level weighing hopper 5; a second feeding component is provided downstream of the second-level weighing hopper 6 and the third-level weighing hopper; weighing equipment is provided at the lower ends of the first-level weighing hopper 5, the second-level weighing hopper 6 and the third-level weighing hopper.

[0047] The weighing hopper of the cold material feeding system is divided into three levels, wherein the first-level weighing hopper 5 is connected to the first feeding assembly, and the second-level weighing hopper 6 and the third-level weighing hopper are both located downstream of the first-level weighing hopper 5 and connected to the first-level weighing hopper 5 by means of a conveying assembly. The capacity of the second-level weighing hopper 6 occupies 50% of the first-level weighing hopper 5, which is suitable for the first feeding to control the cold material feeding amount; the capacity of the third-level weighing hopper occupies 10% of the first-level weighing hopper 5, which is suitable for subsequent feeding to control the cold material feeding amount.

[0048] A plurality of closable discharge ports are provided below the primary weighing hopper 5, and each discharge port is connected to a different secondary weighing hopper 6 or tertiary weighing hopper. Each discharge port is provided with a conveying assembly. The conveying assembly can be a vibrating conveyor 7. The outlet ends of the secondary weighing hopper 6 and the tertiary weighing hopper are provided with a second feeding assembly to feed the converter 10.

[0049] In step S3, the cold material is added into the converter 10 in multiple times, and the first cold material input amount is 50%-80% of the required cold material weight value; the last cold material input amount is less than 10% of the required cold material weight value.

[0050] The cold material is put into the converter 10 in multiple times, and the first cold material is weighed by the secondary weighing hopper 6 and then put into the converter 10, and the subsequent multiple materials are weighed by the tertiary weighing hopper and then put into the converter 10. The melting time of each batch of cold material is kept within 10 minutes, and steps S2 and S3 are repeated until the real-time temperature of the molten steel in the converter 10 is consistent with the set outlet temperature; when repeating steps S2 and S3, the molten steel inlet temperature in step S2 is updated to the real-time temperature of the molten steel in the converter 10; the required cold material weight calculated in step S2 is used to limit the feeding amount of the primary weighing hopper 5 to the secondary weighing hopper 6 or the tertiary weighing hopper.

[0051] After each feeding, the calculation of step S2 is performed to obtain a new feeding amount. The accuracy of the calculation is improved through multiple calculations and feeding. The real-time temperature of the molten steel needs to be measured after the temperature fluctuation stops after the last feeding. The interval between two real-time temperature measurements of the molten steel is at least 5 minutes.

[0052] After repeating the calculation after the first feeding, the calculation result is analyzed and adjusted in combination with the first calculation result and the amount of cold material already fed in to avoid excessive addition of cold material. The amount of each feeding after the first feeding shall not exceed 10% of the required cold material weight calculated in the first feeding.

[0053] If the required cold material weight calculated for the first time is 10t, the weight of the cold material input for the first time is 6t, and the required cold material weight calculated for the second time is 3.8t, then the second input amount can be 1t, and the second input amount shall not exceed 10% of 10t; then after the second input, the required cold material weight is calculated for the third time. If the calculation result is 2.7t, the third input can be 1t..., and so on, and the last time can be 0.01t-1t.

[0054] In some possible embodiments, see Figure 2 In step S3, the second loading assembly conveys the cold material in the weighing hopper to the preheating bin 12. The preheating bin 12 is arranged in the interlayer 11 of the furnace body of the converter 10 and is connected to the inner cavity of the converter 10 by means of a closable valve port 13; the preheating bin 12 is connected to a vibrating conveying device.

[0055] The preheating bin 12 can be used to preheat the cold material, reduce the temperature difference between the cold material and the molten steel, and further reduce the splashing of the molten steel when the cold material is put in. The preheating bin 12 is arranged in the converter 10, and the temperature in the converter 10 can be used to preheat the cold material, so that the high temperature in the converter 10 is fully utilized, and the cooling effect of the cold material is improved.

[0056] The preheating bin 12 is located in the interlayer 11 of the converter 10, and the valve port 13 of the preheating bin 12 is located above the liquid level in the converter 10. The cold materials in the secondary weighing hopper 6 and the tertiary weighing hopper are put into the preheating bin 12, and are preheated in the preheating bin 12. After preheating, they are discharged into the molten steel through the valve port 13 of the preheating bin 12.

[0057] An interlayer 11 is provided on one side wall of the converter 10. The inner cavity of the interlayer 11 is opened in the middle and upper part of the converter 10 and is preheated by using the heat of the converter 10 body. The interlayer 11 includes a bearing cylinder and a vibration conveying device located below the bearing cylinder. The bearing cylinder is movably arranged in the interlayer 11 and vibrates with the help of the vibration conveying device. The bearing cylinder is made of high temperature resistant material. The bottom surface of the bearing cylinder is an inclined surface. Under the vibration of the vibration conveying device, the preheated cold material is discharged from the valve port 13 into the inner cavity of the converter 10.

[0058] The cross section of the preheating bin 12 is arc-shaped or rectangular. When the cross section inside the preheating bin 12 is arc-shaped, the central angle corresponding to the preheating bin 12 is less than 30°.

[0059] Optionally, a limit groove is provided on the side wall of the interlayer 11, and the preheating bin 12 is longitudinally slidably arranged in the limit groove, and longitudinally vibrates under the action of the vibrating conveying device. The vibrating conveying device can adopt a vibration ring or a vibration motor. In order to protect the vibrating conveying device, a heat insulation cavity is provided between the lower part of the interlayer 11 and the inner side wall of the converter 10, the vibrating conveying device is arranged in the heat insulation cavity, and a heat insulation material layer is provided between the heat insulation cavity and the inner side wall of the converter 10.

[0060] Optionally, a material discharge chute 8 is provided at the inlet end of the preheating silo 12 , and a nitrogen sealing device 9 is provided on the material discharge chute 8 . The nitrogen sealing device 9 includes a nitrogen blowpipe connected to the material discharge chute 8 .

[0061] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. The method for automatically cooling the material by adding cold materials in the argon blowing station is characterized in that: The following steps are involved: S1. Determine the inlet and outlet temperatures of molten steel; S2. Establish a temperature balance model, and bring the inlet temperature and outlet temperature in step S1 into the temperature balance model to obtain the required cold material weight; S3, adding cold material into the converter (10), the weight of the cold material being the weight value calculated in step S2; In step S2, the calculation formula of the temperature balance model is: (inlet temperature - outlet temperature) × specific heat of molten steel × weight of molten steel = [specific heat of cold material × (melting point of cold material - 25°C) + latent heat of melting of cold material + specific heat of molten steel × (target temperature - melting point of cold material)] × weight of cold material; where the weight of molten steel = weight of molten steel inlet + weight of cold material.

2. The method for automatically cooling the material in an argon blowing station according to claim 1, characterized in that: In step S2, the weight of molten steel and the weight of cold material can be calculated by combining the calculation formula of molten steel weight with the temperature balance model. The calculation formula of molten steel weight is: molten steel weight = molten iron × molten iron recovery rate + iron block × iron block recovery rate + scrap steel × scrap steel recovery rate + self-circulating material × component ratio × self-circulating recovery rate + alloy addition amount × alloy recovery rate; wherein the molten iron recovery rate, iron block recovery rate, scrap steel recovery rate, self-circulating recovery rate and alloy recovery rate are all actual production experience data.

3. The method for automatically cooling the material in an argon blowing station according to claim 2, characterized in that: In step S1, after the molten steel enters the converter (10), the weight of the molten steel input is obtained through the converter weighing assembly below the converter (10); after the cold material is added in step S3, the weight of the molten steel output is obtained through the converter weighing assembly below the converter (10); the weight of the molten steel output is compared with the weight of the molten steel calculated in step S2, and a calibration and control system error correction are performed.

4. The method for automatically cooling the material in an argon blowing station according to claim 1, characterized in that: In step S3, cold material is fed into the converter (10) with the aid of a cold material feeding system, and the cold material feeding system comprises a first feeding component, a second feeding component and a weighing hopper, wherein the first feeding component is used to transport the cold material in the storage bin (3) to the weighing hopper, and the weight value is obtained by the weighing hopper; after the weight value of the cold material in the weighing hopper reaches the required cold material weight value obtained in step S2, the first feeding component is closed and the second feeding component is opened; the second feeding component is used to transport the cold material in the weighing hopper to the converter (10).

5. The method for automatically cooling the material in an argon blowing station as claimed in claim 4, characterized in that: The first loading assembly comprises a hanging rail (1), a lifting drive component and a magnetic suction cup (4); the hanging rail (1) is horizontally hung above the weighing hopper and extends to the top of the storage bin (3); the lifting drive component is slidably arranged on the hanging rail (1) and has a longitudinal degree of freedom, and the lower end of the lifting drive component is connected to the magnetic suction cup (4).

6. The method for automatically cooling the material in an argon blowing station according to claim 4, characterized in that: In step S3, the cold material feeding system includes a first-level weighing hopper (5), a second-level weighing hopper (6) and a third-level weighing hopper, wherein the first-level weighing hopper (5) is directly connected to the first feeding component; the second-level weighing hopper (6) and the third-level weighing hopper are both located at the outlet side of the first-level weighing hopper (5) and are used to receive the cold material in the first-level weighing hopper (5); the capacity of the second-level weighing hopper (6) is 50% of the capacity of the first-level weighing hopper (5); the capacity of the third-level weighing hopper is 10% of the capacity of the first-level weighing hopper (5); a second feeding component is provided downstream of the second-level weighing hopper (6) and the third-level weighing hopper; and weighing equipment is provided at the lower ends of the first-level weighing hopper (5), the second-level weighing hopper (6) and the third-level weighing hopper.

7. The method for automatically cooling the material in an argon blowing station according to claim 6, characterized in that: In step S3, the cold material is fed into the converter (10) in multiple times, and the first cold material input amount is 50%-80% of the required cold material weight value; the last cold material input amount is less than 10% of the required cold material weight value.

8. The method for automatically cooling the material in an argon blowing station according to claim 7, characterized in that: In step S3, the melting time of each batch of cold material is maintained within 10 minutes, and steps S2 and S3 are repeated until the real-time temperature of the molten steel in the converter (10) is consistent with the set outlet temperature; when repeating steps S2 and S3, the molten steel inlet temperature in step S2 is updated to the real-time temperature of the molten steel in the converter (10); the required cold material weight calculated in step S2 is used to limit the amount of material delivered from the first-stage weighing hopper (5) to the second-stage weighing hopper (6) or the third-stage weighing hopper.

9. The method for automatically cooling the material in an argon blowing station according to claim 4, characterized in that: In step S3, the second loading assembly conveys the cold material in the weighing hopper to the preheating bin (12). The preheating bin (12) is arranged in the interlayer (11) of the furnace body of the converter (10) and is connected to the inner cavity of the converter (10) by means of a closable valve port (13); the preheating bin (12) is connected to a vibrating conveying device.

10. The method for automatically cooling materials in an argon blowing station according to claim 9, characterized in that: A material discharge chute (8) is provided at the inlet end of the preheating bin (12), and a nitrogen sealing device (9) is provided on the material discharge chute (8).

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