A continuous casting mold slag processing system

Abstract

The present invention provides a continuous casting protective slag processing system, which relates to the field of continuous casting protective slag control technology, including: a first conveyor belt, which can convey a ton bag of protective slag in a direction close to a continuous casting platform; a first manipulator, which can grab the ton bag of protective slag and place it on the first conveyor belt; a lifting mechanism, which is arranged on the side of the first conveyor belt close to the continuous casting platform; a protective slag baking box, which is arranged above the continuous casting platform, and is provided with a protective slag conveying structure at the lower part, which can convey the protective slag to the crystallizer on the upper part of the continuous casting platform; a second manipulator, which is arranged above the continuous casting platform, can grab the ton bag of protective slag and pour the protective slag into the protective slag baking box; a control unit, which is electrically connected to the first conveyor belt, the first manipulator, the lifting mechanism, the protective slag baking box, the protective slag conveying structure and the second manipulator; it solves the problems that traditional protective slag control methods mostly rely on manual operation and simple mechanized equipment, and have low efficiency, large errors and high costs.

Description

Technical Field

[0001] The present invention belongs to the technical field of continuous casting mold slag control, and more specifically, relates to a continuous casting mold slag processing system. Background Art

[0002] The rapid development of the modern steel industry, the continuous expansion of production scale, and increasingly fierce market competition have placed higher demands on production efficiency, product quality, and cost control. In the continuous casting process, mold slag is a key auxiliary material, and its control directly affects the surface quality of the ingot and the stability of the production process. Traditional mold slag control methods, which mostly rely on manual operation and simple mechanized equipment, suffer from low efficiency, large errors, and high costs, making them unable to meet the needs of modern steel production. Summary of the Invention

[0003] The purpose of the present invention is to provide a continuous casting mold slag processing system to address the deficiencies in the prior art, so as to solve the problems that the mold slag control methods in the prior art mostly rely on manual operation and simple mechanized equipment, resulting in low efficiency, large errors and high costs.

[0004] In order to achieve the above object, the present invention provides a continuous casting mold slag processing system, comprising:

[0005] a first conveyor belt, which is arranged on one side of the continuous casting platform and is capable of conveying a large bag of mold slag toward the continuous casting platform;

[0006] a first manipulator, which is arranged on a side of the first conveyor belt away from the continuous casting platform and is capable of grabbing a ton bag of mold slag and placing it on the first conveyor belt;

[0007] a lifting mechanism, the lifting mechanism being arranged on a side of the first conveyor belt close to the continuous casting platform;

[0008] A powder baking box is provided above the continuous casting platform, and a powder conveying structure is provided at the bottom of the powder baking box, which can convey the powder into the crystallizer above the continuous casting platform;

[0009] a second manipulator, which is arranged above the continuous casting platform and is capable of grabbing the mold slag packaging bag in the mold slag ton bag and pouring the mold slag into the mold slag baking box;

[0010] A control unit is electrically connected to the first conveyor belt, the first manipulator, the lifting mechanism, the protective slag baking box, the protective slag conveying structure and the second manipulator.

[0011] Optionally, a plurality of the first conveyor belts are arranged in parallel side by side, and the plurality of first conveyor belts are respectively used to convey different types of protective slag bags.

[0012] Optionally, it also includes a first moving mechanism and a second moving mechanism, the first moving mechanism and the second moving mechanism are respectively arranged on the side of the first conveyor belt away from the continuous casting platform and the side of the first conveyor belt close to the continuous casting platform, the first manipulator and the lifting mechanism are respectively arranged on the upper side of the first moving mechanism and the second moving mechanism, and the moving directions of the first moving mechanism and the second moving mechanism are perpendicular to the conveying direction of the first conveyor belt.

[0013] Optionally, a second conveyor belt is provided above the lifting mechanism, and the second conveyor belt is electrically connected to the control unit.

[0014] Optionally, the protective slag baking oven includes a slag adding port, a heating chamber, a discharge port and an insulation chamber arranged in sequence from top to bottom. A blade is provided above the slag adding port. The blade is used to cut the protective slag packaging bag when the second manipulator moves the protective slag packaging bag, and pour the protective slag into the slag adding port. A discharge valve is provided in the discharge port, and the protective slag conveying structure is provided on the lower side of the insulation chamber and is connected to the insulation chamber.

[0015] Optionally, the heating chamber is shuttle-shaped, and a heating plate matching the axial cross-sectional shape of the heating chamber is provided in the heating chamber. A rotating shaft is provided in the middle of the heating plate, and one end of the rotating shaft is connected to a drive motor, which can drive the heating plate to rotate.

[0016] Optionally, the protective slag conveying structure includes a plurality of slag discharge channels, each of which is provided with a first control valve, the lower end of each slag discharge channel is connected to a conveying pipe, and each of the conveying pipes is connected to one of the crystallizers.

[0017] Optionally, the protective slag conveying structure also includes a pneumatic conveying component, which includes an air source pipe. Multiple conveying pipes are connected to the air source pipe, and each conveying pipe is provided with a second control valve near the air source pipe.

[0018] Optionally, a protective slag layer thickness measuring structure is also included, which is used to measure the thickness of the protective slag layer in the crystallizer. The protective slag layer thickness measuring structure is electrically connected to the control unit, and the control unit can control the protective slag conveying structure according to the measurement results of the protective slag layer thickness measuring structure.

[0019] Optionally, the protective slag layer thickness measurement structure includes:

[0020] A guide tube, one end of which is connected to a wire feeder, the other end of which is provided with an opening, and a detection window is provided on a tube wall near the other end of the guide tube, the other end of the guide tube being used to be arranged above the crystallizer;

[0021] a metal wire, one end of which is connected to the wire feeder, and the other end of which passes through the guide tube and extends out from the opening;

[0022] a mounting frame, the mounting frame being arranged on one side of the detection window, and having a distance sensor and a displacement sensor mounted on the mounting frame, the distance sensor being used to detect the distance between the distance sensor and the upper surface of the protective slag layer in the crystallizer, and the displacement sensor being used to detect the displacement of the metal wire through the detection window;

[0023] The control unit is connected to the wire feeder, the distance sensor and the displacement sensor, and can control the operation of the wire feeder and calculate the difference between the detection result of the displacement sensor and the detection result of the distance sensor.

[0024] The present invention provides a continuous casting protective slag processing system, which has the following beneficial effects: the continuous casting protective slag processing system can grab a ton bag of protective slag from a protective slag ton bag transport vehicle through a first manipulator, place it on a first conveyor belt, and convey it toward the continuous casting platform through the first conveyor belt until the ton bag of protective slag is conveyed to a lifting mechanism between the first conveyor belt and the continuous casting platform. The lifting mechanism can lift the ton bag of protective slag to above the continuous casting platform. The second manipulator can grab the protective slag packaging bag in the protective slag ton bag and pour the protective slag into a protective slag baking oven for baking, pre-treating the protective slag to achieve baking and drying. The protective slag conveying structure can convey the pretreated protective slag to the crystallizer on the upper part of the continuous casting platform, realizing the full-process automated processing of the protective slag from warehousing, storage, conveying, baking to use, avoiding the use of manual labor, saving manpower and costs, and improving work accuracy and work efficiency.

[0025] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present invention.

[0027] Figure 1 A structural schematic diagram of a continuous casting mold slag processing system according to an embodiment of the present invention is shown.

[0028] Figure 2 A schematic diagram of the internal structure of a mold slag baking box of a continuous casting mold slag processing system according to an embodiment of the present invention is shown.

[0029] Figure 3 Shown Figure 1 A partial enlarged schematic diagram.

[0030] Figure 4 A schematic diagram of a mold slag layer thickness measurement structure of a continuous casting mold slag processing system according to an embodiment of the present invention is shown.

[0031] Description of reference numerals:

[0032] 1. Scrap ton bag transport vehicle; 2. First manipulator; 3. First rail trolley; 4. First control line; 5. Second control line; 6. Third control line; 7. Fourth control line; 8. Scrap ton bag; 9. First conveyor belt; 10. Lifting mechanism; 11. Second rail trolley; 12. Second manipulator; 13. Blade; 14. Slag feed port; 15. Scrap baking oven; 16. Tundish; 17. Submerged nozzle; 18. Crystallizer; 19. Continuous casting platform; 20. Control unit; 21. Second conveyor belt; 22. First camera; 23. Second camera; 24. Heating plate; 25. Drive Drive motor; 26. Control switch; 27. Feeding port; 28. Insulation chamber; 29. ​​First control valve; 30. Second control valve; 31. Gas source pipe; 32. Slag discharge channel; 33. Temperature sensor; 34. Delivery pipe; 35. Shielding slag layer thickness measurement structure; 36. Wire feeder; 37. First set screw; 38. Guide tube; 39. Copper wire; 40. Displacement sensor; 41. Detection window; 42. Upper surface of shielding slag layer; 43. Molten steel level; 44. Mounting frame; 45. Distance sensor; 46. Telescopic sleeve; 47. Moving wheel; 48. Mounting sleeve; 49. Second set screw. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. Instead, these embodiments are provided to make the present invention more thorough and complete and to fully convey the scope of the present invention to those skilled in the art.

[0034] like Figure 1 As shown, the present invention provides a continuous casting mold slag processing system, comprising:

[0035] The first conveyor belt 9 is arranged on one side of the continuous casting platform 19 and is capable of conveying the mold slag bag 8 toward the continuous casting platform 19;

[0036] The first manipulator 2 is arranged on the side of the first conveyor belt 9 away from the continuous casting platform 19 and is capable of grabbing the mold slag bag 8 and placing it on the first conveyor belt 9;

[0037] The lifting mechanism 10 is arranged on a side of the first conveyor belt 9 close to the continuous casting platform 19;

[0038] A mold slag baking box 15 is provided above the continuous casting platform 19. A mold slag conveying structure is provided at the lower portion of the mold slag baking box 15. The mold slag conveying structure can convey the mold slag to the crystallizer 18 above the continuous casting platform 19.

[0039] The second manipulator 12 is arranged above the continuous casting platform 19 and is capable of grabbing the mold slag packaging bag in the mold slag bag 8 and pouring the mold slag into the mold slag baking box 15;

[0040] The control unit 20 is electrically connected to the first conveyor belt 9 , the first manipulator 2 , the lifting mechanism 10 , the protective slag baking box 15 , the protective slag conveying structure and the second manipulator 12 .

[0041] Specifically, in order to solve the problems that the protective slag control methods in the existing technology mostly rely on manual operation and simple mechanized equipment, which have low efficiency, large errors and high costs; the continuous casting protective slag processing system provided by the present invention can grab the protective slag ton bag 8 from the protective slag ton bag transport vehicle 1 through the first manipulator 2, place it on the first conveyor belt 9, and convey it in the direction close to the continuous casting platform 19 through the first conveyor belt 9 until the protective slag ton bag 8 is conveyed to the lifting mechanism 10 between the first conveyor belt 9 and the continuous casting platform 19. The lifting mechanism 10 can lift the protective slag ton bag 8 to the top of the continuous casting platform 19, and the second manipulator 12 can grab the protective slag packaging bag in the protective slag ton bag 8 and pour the protective slag into the protective slag baking box 15 for baking, pre-treating the protective slag to achieve baking and drying. The protective slag conveying structure can convey the pretreated protective slag to the crystallizer 18 on the upper part of the continuous casting platform 19, realizing the full process automation processing of the protective slag from warehousing, storage, conveying, baking to use, which can avoid the use of manual labor, save manpower and cost, and improve work accuracy and work efficiency.

[0042] In this embodiment, the control unit 20 is a central control computer and is electrically connected to the production planning computer.

[0043] Optionally, multiple first conveyor belts 9 are arranged in parallel side by side, and the multiple first conveyor belts 9 are respectively used to convey different types of protective slag bags 8.

[0044] Specifically, multiple first conveyor belts 9 are arranged side by side and in parallel, and each first conveyor belt 9 can be placed with a protective slag ton bag 8. Since different types of protective slag are used in the continuous casting production process of different types of products, different types of protective slag ton bags 8 need to be selected according to different types of products after being transported by the protective slag ton bag transport vehicle 1. Therefore, the arrangement of multiple first conveyor belts 9 facilitates the classification, storage and transportation of different types of protective slag ton bags 8.

[0045] In this embodiment, a first camera 22 is provided on the first manipulator 2, and the first camera 22 is electrically connected to the control unit 20. The type of protective slag ton bags 8 can be identified through the first camera 22, and the control unit 20 controls the first manipulator 2 to classify different types of protective slag ton bags 8 and place them on different first conveyor belts 9; a second camera 23 is provided on the second manipulator 12, and the second camera 23 is used to guide the second manipulator 12d to grab the protective slag packaging bags in the protective slag ton bags 8.

[0046] Optionally, it also includes a first moving mechanism and a second moving mechanism, which are respectively arranged on the side of the first conveyor belt 9 away from the continuous casting platform 19 and the side of the first conveyor belt 9 close to the continuous casting platform 19, and the first manipulator 2 and the lifting mechanism 10 are respectively arranged on the upper side of the first moving mechanism and the second moving mechanism, and the moving direction of the first moving mechanism and the second moving mechanism is perpendicular to the conveying direction of the first conveyor belt 9.

[0047] Specifically, the first moving mechanism and the second moving mechanism can respectively drive the first manipulator 2 and the lifting mechanism 10 to move in a direction perpendicular to the conveying direction of the first conveyor belt 9, which is convenient for the first manipulator 2 to classify, grasp and place different types of protective slag ton bags 8, and also convenient for conveying the required types of protective slag ton bags 8 to the lifting mechanism 10 according to production needs for loading the protective slag.

[0048] In this embodiment, the first conveyor belt 9 is provided with a first track and a second track perpendicular to its conveying direction at both ends, and the first moving mechanism and the second moving mechanism respectively include a first track trolley 3 and a second track trolley 11, which can move along the first track and the second track respectively.

[0049] Optionally, a second conveyor belt 21 is provided above the lifting mechanism 10 , and the second conveyor belt 21 is electrically connected to the control unit 20 .

[0050] Specifically, the second conveyor belt 21 can cooperate with the first conveyor belt 9 to facilitate the transfer of the protective slag bag 8 from the first conveyor belt 9 to the lifting mechanism 10, and the second conveyor belt 21 is arranged close to the first conveyor belt 9.

[0051] In this embodiment, the first conveyor belt 9 and the second conveyor belt 21 are both conveyor belts capable of conveying in both forward and reverse directions; a plurality of protective slag packaging bags are provided in the protective slag bulk bag 8. When the protective slag packaging bags in the protective slag bulk bag 8 are not used up at one time, the protective slag bulk bag can be returned to the first conveyor belt 9 by lowering the lifting mechanism 10 and running the second conveyor belt 21 and the first conveyor belt 9 in reverse.

[0052] Optionally, the protective slag baking box 15 includes a slag adding port 14, a heating chamber, a discharge port 27 and an insulation chamber 28 arranged in sequence from top to bottom. A blade 13 is arranged above the slag adding port 14. The blade 13 is used to cut the protective slag packaging bag when the second manipulator 12 moves the protective slag packaging bag, and pour the protective slag into the slag adding port 14. A discharge valve is provided in the discharge port 27, and the protective slag conveying structure is arranged on the lower side of the insulation chamber 28 and is connected to the insulation chamber 28.

[0053] Specifically, such as Figure 2 As shown, the protective slag baking box 15 adds slag through the slag adding port 14, and the second manipulator 12 grabs the protective slag packaging bag in the raised protective slag bag 8 and moves it to the top of the slag adding port 14. When passing through the blade 13, the protective slag packaging bag can be cut by the blade 13, so that the protective slag is poured into the slag adding port 14, and the bag body can be removed by the second manipulator 12 and placed in the set position or put back on the lifting mechanism 10 for subsequent processing. After the protective slag is poured into the slag adding port 14, it flows downward and enters the heating chamber for heating, and then enters the insulation chamber 28 through the discharge port 27 for insulation to meet the heating temperature and insulation time requirements of the protective slag; the protective slag that reaches the insulation time can be transported to the crystallizer 18 through the protective slag conveying structure to realize the protective slag supply of the crystallizer 18.

[0054] In this embodiment, a temperature sensor 33 is provided in the heating chamber, a control switch 26 is connected to the discharge valve, and the valve is connected to the control unit 20 via the control switch 26, and a heating resistance wire is provided in the cavity wall of the protective cavity.

[0055] Optionally, the heating chamber is shuttle-shaped, and a heating plate 24 is provided in the heating chamber, which matches the axial cross-sectional shape of the heating chamber. A rotating shaft is provided in the middle of the heating plate 24, and one end of the rotating shaft is connected to a drive motor 25, which can drive the heating plate 24 to rotate.

[0056] Specifically, the heating chamber is a shuttle-shaped structure with thin ends and a thick middle, which is conducive to the flow and discharge of protective slag. The drive motor 25 can drive the heating plate 24 to rotate in the heating chamber, heating the protective slag while stirring the protective slag, thereby improving the heating efficiency and uniformity.

[0057] Optionally, the protective slag conveying structure includes multiple slag discharge channels 32, each slag discharge channel 32 is provided with a first control valve 29, the lower end of each slag discharge channel 32 is connected to a conveying pipe 34, and each conveying pipe 34 is connected to a crystallizer 18.

[0058] Specifically, multiple slag discharge channels 32 are arranged at intervals along the length direction of the insulation chamber 28, and their opening and closing can be controlled by the first control valve 29. The protective slag in the insulation chamber 28 can be discharged downward through the slag discharge channel 32 and enter the conveying pipe 34, and then input into the crystallizer 18 through the conveying pipe 34.

[0059] In this embodiment, an intermediate tank 16 and a submerged water inlet 17 are provided above the crystallizer.

[0060] Optionally, the protective slag conveying structure also includes a pneumatic conveying assembly, which includes an air source pipe 31, multiple conveying pipes 34 connected to the air source pipe 31, and each conveying pipe 34 is provided with a second control valve 30 near the air source pipe 31.

[0061] Specifically, the delivery pipes 34 are pneumatically delivered, with the gas source provided by the gas source pipe 31 , and the second control valve 30 is used to control the gas source to enter each delivery pipe 34 .

[0062] In this embodiment, the gas source tube 31 is an argon gas tube.

[0063] Optionally, a protective slag layer thickness measuring structure 35 is also included. The protective slag layer thickness measuring structure 35 is used to measure the thickness of the protective slag layer in the crystallizer 18. The protective slag layer thickness measuring structure 35 is electrically connected to the control unit 20. The control unit 20 can control the protective slag conveying structure according to the measurement results of the protective slag layer thickness measuring structure 35.

[0064] Specifically, the protective slag layer thickness measuring structure 35 regularly measures the thickness of the protective slag layer in the crystallizer 18 and feeds back its measurement results to the control unit 20. The control unit 20 can control the input of the protective slag into the crystallizer 18 according to the measurement results, so that the thickness of the protective slag layer is maintained within a reasonable range.

[0065] In this embodiment, a protective slag layer thickness measuring structure 35 is provided in each crystallizer 18 .

[0066] Optionally, the protective slag layer thickness measurement structure 35 includes:

[0067] A guide tube 38, one end of which is connected to the wire feeder 36, and the other end of which is provided with an opening, and a detection window 41 is provided on the tube wall near the other end of the guide tube 38, and the other end of the guide tube 38 is used to be disposed above the crystallizer 18;

[0068] A metal wire, one end of which is connected to a wire feeder 36 and the other end of which passes through a guide tube 38 and extends out of the opening;

[0069] A mounting frame 44 is provided on one side of the detection window 41. A distance sensor 45 and a displacement sensor 40 are mounted on the mounting frame 44. The distance sensor 45 is used to detect the distance between the distance sensor 45 and the upper surface of the protective slag layer in the crystallizer 18. The displacement sensor 40 is used to detect the displacement of the metal wire through the detection window 41.

[0070] The control unit 20 is connected to the wire feeder 36 , the distance sensor 45 and the displacement sensor 40 , and can control the operation of the wire feeder 36 and calculate the difference between the detection results of the displacement sensor 40 and the detection results of the distance sensor 45 .

[0071] Specifically, such as Figure 3 and Figure 4 As shown, the device for measuring the thickness of the protective slag layer comprises a guide tube 38, a wire feeder 36 and a metal wire. The metal wire moves through the guide tube 38. The wire feeder 36 can feed and retract the metal wire so that the metal wire moves along the guide tube 38 and extends and retracts at the other end of the guide tube 38. The other end of the guide tube 38 can be arranged above the crystallizer 18 so that the metal wire extending from the opening can move downward through the protective slag layer and be inserted into the molten steel. Then, the metal wire inserted into the molten steel will melt while the metal wire out of the protective slag layer will not melt. Then, the metal wire is measured by the distance sensor 4. 5 detects the distance between it and the upper surface 42 of the protective slag layer to obtain a distance value, and recycles the metal wire through the wire feeder 36 so that the end of the metal wire that remains in the protective slag layer and does not melt moves upward. During this process, the displacement sensor 40 detects the displacement of the metal wire from the beginning of movement until the end of the metal wire just passes the displacement sensor 40. The control unit 20 can calculate the difference between the displacement and the distance value to accurately calculate the current thickness of the protective slag layer. The measurement result is highly accurate, and it is convenient to perform continuous multiple measurements, with a high degree of automation.

[0072] In this embodiment, the displacement sensor 40 is a contact displacement sensor 40, such as a potentiometer displacement sensor 40. The displacement sensor 40 is fixed on a mounting frame 44, and its test end is in contact with the metal wire. In other embodiments, a non-contact displacement sensor 40 that can realize the corresponding displacement test function can also be used.

[0073] Optionally, the guide tube 38 is in an inverted U shape.

[0074] Specifically, the guide tube 38 is in an inverted U shape, so that the wire feeder 36 can be placed on the ground. The metal wire is guided to a suitable height through the guide tube 38 and then extended vertically downward to above the crystallizer 18, making it easier for the metal wire to be vertically inserted into the molten steel in the crystallizer 18.

[0075] Optionally, a telescopic structure is provided near one end of the guide tube 38 , and the telescopic structure can adjust the length of the guide rod.

[0076] Specifically, the provision of the telescopic structure facilitates adjustment of the vertical height of the guide tube 38 , thereby improving the applicability of the device for measuring the thickness of the protective slag layer.

[0077] Optionally, the telescopic structure includes a telescopic sleeve 46, the guide tube 38 includes two sections, and the ends of the two sections of the guide tube 38 close to each other are movably inserted into the telescopic sleeve 46. The telescopic sleeve 46 is provided with first fixing screws 37 near the two ends.

[0078] Specifically, the guide tube 38 is divided into two sections, which are movably connected by a telescopic sleeve 46. The vertical height of the guide tube 38 can be adjusted by plugging and unplugging. After adjustment, it can be fastened by the first set screw 37. At the same time, the guide tube 38 divided into two sections is also easy to disassemble, move and assemble.

[0079] Optionally, the wire feeder 36 is arranged on a base, and a moving wheel 47 is provided on the lower side of the base.

[0080] Specifically, the provision of the base with the moving wheels 47 makes the device for measuring the thickness of the protective slag layer easy to move, thereby improving its convenience in use.

[0081] Optionally, the mounting bracket 44 is L-shaped, one end of the mounting bracket 44 is connected to the guide tube 38 , the other end of the mounting bracket 44 is aligned with the detection window 41 , and the distance sensor 45 and the displacement sensor 40 are mounted on the other end of the mounting bracket 44 .

[0082] Specifically, the mounting bracket 44 can be a rod-shaped component, the upper end of which is connected to the guide tube 38 and the lower end is set at a position corresponding to the detection window 41, which facilitates the installation and detection of the distance sensor 45 and the displacement sensor 40.

[0083] Optionally, a mounting sleeve 48 is provided at one end of the mounting bracket 44 . The mounting sleeve 48 is slidably sleeved on the outer side of the guide tube 38 . A second set screw 49 is provided on the mounting sleeve 48 .

[0084] Specifically, the mounting bracket 44 can be installed on the horizontal section of the guide tube 38 through the mounting sleeve 48 with the second set screw 49 , so that the mounting bracket 44 can be moved to adjust the positions of the distance sensor 45 and the displacement sensor 40 .

[0085] Optionally, the metal wire is a copper wire 39 .

[0086] Specifically, copper wire 39 can be used as the metal wire inserted into the molten steel, which can ensure that it melts in the molten steel and does not melt in the protective slag layer. The melting of a very small amount of copper will not have a substantial impact on the composition and quality of the molten steel.

[0087] When using the device for measuring the thickness of the protective slag layer:

[0088] Step 1: Move the other end of the guide tube 38 above the crystallizer 18 so that the distance sensor 45 is above the protective slag layer in the crystallizer 18;

[0089] Step 2: Feed the wire using the wire feeder 36 so that the other end of the wire moves toward the inside of the crystallizer 18 and is inserted into the molten steel;

[0090] Step 3: Use the distance sensor 45 to detect the distance between it and the upper surface of the protective slag layer in the crystallizer 18 to obtain a distance value;

[0091] Step 4: Utilize the wire feeder 36 to reel in the wire so that the metal wire is pulled out of the molten steel, and simultaneously utilize the displacement sensor 40 to detect the displacement of the metal wire from the moment the wire is reeled in to the moment the other end of the metal wire is removed from the displacement sensor 40;

[0092] Step 5: Calculate the difference between the displacement and the distance value, and use the difference as the thickness of the protective slag layer.

[0093] Optionally, steps 2 to 5 are performed once every set time period.

[0094] In this embodiment, the measurement of a protective slag layer thickness measuring structure is taken as an example: before work, first loosen the first set screw 37, adjust the vertical height of the guide tube 38 to an appropriate level and then tighten it to ensure that the other end of the guide tube 38 avoids the position of the submerged water inlet 17 in the crystallizer 18, and the positions of the displacement sensor 40 and the distance sensor 45 are adjusted by the mounting sleeve 48 with the second set screw 49; the set duration of the measurement interval and the wire feeding amount each time are set by the control unit, for example, once every 3 minutes, the wire feeder 36 works for 4 seconds each time, and the wire feeding length is approximately 60 cm, ensuring that the copper wire 39 can be inserted below the molten steel liquid level 43 each time. During operation, the wire feeder 36 stops running after feeding the copper wire 39 to the set length, and then stops for 1 minute before collecting the wire. While collecting the copper wire 39, the displacement sensor 40 detects the wire collection length, that is, the displacement of the copper wire 39. When the lower end of the copper wire 39 moves out of the displacement sensor 40, the detection stops, and the wire feeder 36 stops collecting the wire; and the distance sensor 45 detects the distance between it and the upper surface 42 of the protective slag layer to obtain the distance value; the displacement and the distance value are calculated in the control unit, and the difference between the two is calculated to obtain the thickness of the protective slag layer measured this time, completing a measurement. After that, the thickness of the protective slag layer is measured again after each set time period, thereby realizing continuous and multiple automatic measurements of the thickness of the protective slag layer in the crystallizer 18, which helps to ensure that the thickness of the protective slag layer is maintained within the process parameter range and ensure the quality of steelmaking.

[0095] In summary, when the continuous casting mold slag processing system provided by the present invention is working, taking the complete control of the mold slag as an example:

[0096] 1. Magnetic slag preparation process: First, the protective slag ton bag transport vehicle 1 transports the protective slag ton bag 8 to the side of the first conveyor belt 9 away from the continuous casting platform 19, and the first moving mechanism drives the first manipulator 2 to move. After the first camera 22 on the first manipulator 2 detects the type of protective slag ton bag 8, it transmits the signal to the control unit 20 through the first control line 4. The control unit 20 sends an operation instruction to the first conveyor belt 9 where the same type of protective slag ton bag 8 is stored through the second control line 5. When the leftmost protective slag ton bag 8 above the first conveyor belt 9 is 2 meters away from the leftmost side of the first conveyor belt 9, a bag of protective slag ton bag 8 can be stored on the left side above the first conveyor belt 9. At this time, the first manipulator 2 starts to grab the protective slag ton bag 8 onto the first conveyor belt 9. After completing a grabbing action, the control unit 20 continues to control the operation of the first conveyor belt 9, and then places the second protective slag ton bag 8 on the first conveyor belt 9 in sequence.

[0097] 2. Protection slag transfer process: When the production plan appears in the production plan computer, the control unit 20 immediately receives the pouring time and steel grade information in the production plan computer to determine which type of protection slag to use. Assuming that type A protection slag is used, the control unit 20 sends a command to the second moving mechanism through the third control line 6, and drives the lifting mechanism 10 to move to the end of the first conveyor belt 9 where the type A protection slag bag 8 is stored through the second moving mechanism. At the same time, the second conveyor belt 21 and the first conveyor belt 9 at the top of the lifting mechanism 10 start to run forward. When the protection slag bag 8 moves to the middle of the second conveyor belt 21, the first conveyor belt 9 and the second conveyor belt 21 stop running, and the control unit 20 sends an ascending command to the lifting mechanism 10 to make the top of the lifting mechanism 10 The second conveyor belt 21 and the protective slag ton bag 8 rise to the same level as the upper surface of the protective slag baking box 15 and then stop running. Then the second camera 23 cooperates with the second manipulator 12 to grab the protective slag packaging bag in the protective slag ton bag 8 and move it to above the slag adding port 14 of the baking box. During the movement, the protective slag packaging bag is cut open by the blade 13, and the protective slag is added to the protective slag baking box 15. This process is repeated until the protective slag in the protective slag baking box 15 is sufficient for this use and then stops. The amount of protective slag added can be preset according to usage. At the same time, the control unit 20 sends a signal to the lifting mechanism 10, the second conveyor belt 21, the second rail trolley 11, and the first conveyor belt 9 to return the protective slag ton bag with the remaining protective slag packaging bag to the first conveyor belt 9.

[0098] 3. Shielding slag baking process: After the shielding slag is added, the control unit 20 controls the shielding slag baking box 15 to start running through the fourth control line 7, and the driving motor 25 drives the heating plate 24 to rotate through the rotating shaft. At the same time, the heating plate 24 starts to heat, so that the shielding slag is evenly heated. When the temperature sensor 33 detects that the shielding slag reaches the set temperature, the control unit 20 sends a signal to the control switch 26 to open the discharge valve in the discharge port 27, allowing the heated shielding slag to enter the insulation chamber 28 and maintain a constant temperature until the insulation time requirement of the shielding slag is met.

[0099] 4. The process of conveying and using protective slag: The protective slag is put into use after being kept warm for a certain period of time. When in use, the protective slag is conveyed to each flow crystallizer 18 through the conveying pipe 34. At the same time, the protective slag layer thickness measuring structure 35 automatically measures the thickness of the protective slag layer, and transmits the thickness of the protective slag layer in the crystallizer 18 to the control unit 20. The control unit 20 controls each first control valve 29 and the second control valve 30 according to the thickness of the protective slag layer, and then adjusts the amount of protective slag conveyed by the protective slag baking oven 15 to each flow crystallizer 18, and controls the thickness of the protective slag layer in each flow crystallizer 18.

[0100] While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A continuous casting mold slag processing system, characterized in that: include: a first conveyor belt, which is arranged on one side of the continuous casting platform and is capable of conveying a large bag of mold slag toward the continuous casting platform; a first manipulator, which is arranged on a side of the first conveyor belt away from the continuous casting platform and is capable of grabbing a ton bag of mold slag and placing it on the first conveyor belt; a lifting mechanism, the lifting mechanism being arranged on a side of the first conveyor belt close to the continuous casting platform; A powder baking box is provided above the continuous casting platform, and a powder conveying structure is provided at the bottom of the powder baking box, which can convey the powder into the crystallizer above the continuous casting platform; a second manipulator, which is arranged above the continuous casting platform and is capable of grabbing the mold slag packaging bag in the mold slag ton bag and pouring the mold slag into the mold slag baking box; a control unit electrically connected to the first conveyor belt, the first manipulator, the lifting mechanism, the protective slag baking oven, the protective slag conveying structure, and the second manipulator; A protective slag layer thickness measuring structure is used to measure the thickness of the protective slag layer in the crystallizer. The protective slag layer thickness measuring structure is electrically connected to the control unit, and the control unit can control the protective slag conveying structure according to the measurement results of the protective slag layer thickness measuring structure.

2. The continuous casting mold slag processing system according to claim 1, characterized in that: A plurality of the first conveyor belts are arranged in parallel side by side, and the plurality of first conveyor belts are respectively used to convey different types of protective slag bags.

3. The continuous casting mold slag processing system according to claim 2, characterized in that: It also includes a first moving mechanism and a second moving mechanism, the first moving mechanism and the second moving mechanism are respectively arranged on the side of the first conveyor belt away from the continuous casting platform and the side of the first conveyor belt close to the continuous casting platform, the first manipulator and the lifting mechanism are respectively arranged on the upper side of the first moving mechanism and the second moving mechanism, and the moving direction of the first moving mechanism and the second moving mechanism is perpendicular to the conveying direction of the first conveyor belt.

4. The continuous casting mold slag processing system according to claim 3, characterized in that: A second conveyor belt is provided above the lifting mechanism, and the second conveyor belt is electrically connected to the control unit.

5. The continuous casting mold slag processing system according to claim 1, characterized in that: The protective slag baking oven includes a slag adding port, a heating chamber, a discharge port and an insulation chamber arranged in sequence from top to bottom. A blade is provided above the slag adding port. The blade is used to cut the protective slag packaging bag when the second manipulator moves the protective slag packaging, and pour the protective slag into the slag adding port. A discharge valve is provided in the discharge port. The protective slag conveying structure is provided at the lower side of the insulation chamber and is connected to the insulation chamber.

6. The continuous casting mold slag processing system according to claim 5, characterized in that: The heating chamber is shuttle-shaped, and a heating plate matching the axial cross-sectional shape of the heating chamber is provided in the heating chamber. A rotating shaft is provided in the middle of the heating plate, and one end of the rotating shaft is connected to a driving motor, which can drive the heating plate to rotate.

7. The continuous casting mold slag processing system according to claim 1, characterized in that: The protective slag conveying structure includes a plurality of slag discharge channels, each of which is provided with a first control valve, the lower end of each slag discharge channel is connected to a conveying pipe, and each of the conveying pipes is connected to a crystallizer.

8. The continuous casting mold slag processing system according to claim 7, characterized in that: The protective slag conveying structure also includes a pneumatic conveying component, which includes an air source pipe. Multiple conveying pipes are connected to the air source pipe, and each conveying pipe is provided with a second control valve near the air source pipe.

9. The continuous casting mold slag processing system according to claim 1, characterized in that: The protective slag layer thickness measurement structure includes: A guide tube, one end of which is connected to a wire feeder, the other end of which is provided with an opening, and a detection window is provided on a tube wall near the other end of the guide tube, the other end of the guide tube being used to be arranged above the crystallizer; a metal wire, one end of which is connected to the wire feeder, and the other end of which passes through the guide tube and extends out from the opening; a mounting frame, the mounting frame being arranged on one side of the detection window, and having a distance sensor and a displacement sensor mounted on the mounting frame, the distance sensor being used to detect the distance between the distance sensor and the upper surface of the protective slag layer in the crystallizer, and the displacement sensor being used to detect the displacement of the metal wire through the detection window; The control unit is connected to the wire feeder, the distance sensor and the displacement sensor, and can control the operation of the wire feeder and calculate the difference between the detection result of the displacement sensor and the detection result of the distance sensor.

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