Converter continuous casting molten steel purification control device

Abstract

The utility model relates to the technical field of steel smelting equipment, and provides a converter continuous casting liquid steel purification control device, which comprises a device base, the device base comprises a transfer ladle, a wire feeding mechanism is arranged at the bottom end of the transfer ladle, the device base further comprises a hydraulic rod, the bottom end of the hydraulic rod is fixedly connected with a ladle cover, the wire feeding mechanism comprises a mounting box, one side of the mounting box is fixedly connected with a third motor, the inside two sides of the mounting box are fixedly connected with connecting rods, and one end, away from the mounting box, of the connecting rods is fixedly connected with a ceramic guide pipe, the alloy adding in the prior art often depends on manual experience, the operation has great uncertainty, influences the mechanical properties and corrosion resistance, leads to unstable product quality, and it is difficult to meet the high-end market demand, which brings severe challenges to enterprise production management and market competition.

Description

Technical Field

[0001] This utility model relates to the field of steel smelting equipment technology, specifically to a converter continuous casting molten steel purification control device. Background Technology

[0002] In modern steel production, the converter-continuous casting process is the mainstream production technology. The purity of molten steel, namely the content, size, shape, and distribution of non-metallic inclusions and the content of harmful gases (such as oxygen, nitrogen, and hydrogen), has a decisive impact on the mechanical properties, processing properties, and service performance of the final steel product. With the increasing demands for steel quality from downstream industries, especially in high-end steel sectors such as automobiles, home appliances, pipelines, and bearings, the control of molten steel purity is becoming increasingly stringent.

[0003] Existing technologies for traditional alloy addition have significant technical shortcomings, heavily relying on manual experience. Operators estimate and adjust the amount of alloy added for different steel grades and processes based solely on their vague memory and limited experience, observing subjective indicators such as molten steel color and flow rate. This lack of precise quantitative basis leads to significant operational uncertainty, resulting in drastic fluctuations in alloy yield. Excessive yield wastes alloy and increases costs; excessively low yield results in substandard steel composition, affecting mechanical properties and corrosion resistance, leading to unstable product quality and difficulty meeting the demands of the high-end market. This poses a severe challenge to enterprise production management and market competitiveness. Utility Model Content

[0004] To overcome the above-mentioned defects, this utility model provides a converter continuous casting molten steel purification control device, which solves the technical problem that the addition of alloys often relies on manual experience, resulting in large operational uncertainties, affecting mechanical properties and corrosion resistance, leading to unstable product quality, difficulty in meeting the needs of the high-end market, and posing a severe challenge to enterprise production management and market competition.

[0005] According to one aspect, at least one embodiment of the present invention provides a converter continuous casting molten steel purification control device, comprising: a device base, The device base includes a transfer ladle, and a wire feeding mechanism is provided at the bottom end of the transfer ladle; The device base also includes a hydraulic rod, the bottom end of which is fixedly connected to a steel ladle cover; The wire feeding mechanism includes a mounting box, and a third motor is fixedly connected to one side of the mounting box.

[0006] For example, in at least one embodiment of the present invention, a converter continuous casting molten steel purification control device further includes: connecting rods fixedly connected to both sides of the interior of the mounting box; a ceramic guide tube fixedly connected to the end of the connecting rod away from the mounting box; the end of the ceramic guide tube away from the mounting box passing through the transfer ladle and fixedly connected to the transfer ladle; an active wire guide wheel fixedly connected to the output shaft of the third motor; the end of the active wire guide wheel away from the output shaft of the third motor rotatably connected to the mounting box; a passive wire guide wheel meshing with one side of the active wire guide wheel; and both sides of the passive wire guide wheel rotatably connected to the mounting box.

[0007] For example, in at least one embodiment of the present invention, a converter continuous casting molten steel purification control device further includes: a laser spectral probe fixedly connected to the center of the bottom end of the ladle cover, and electromagnetic ultrasonic sensors uniformly distributed in a ring at the bottom end of the ladle cover, the electromagnetic ultrasonic sensors being fixedly connected to the ladle cover.

[0008] For example, in at least one embodiment of the present invention, a converter continuous casting molten steel purification control device is provided, which further includes: a PLC controller fixedly connected to the bottom right side of the device base, and connecting shafts fixedly connected to both sides of the transfer ladle.

[0009] For example, in at least one embodiment of the present invention, a converter continuous casting molten steel purification control device is provided, which further includes: the end of the connecting shaft away from the transfer ladle is rotatably connected to the device base, and a first motor is fixedly connected to the middle of the right side of the device base, and the output shaft of the first motor passes through the device base and is fixedly connected to the connecting shaft.

[0010] For example, in at least one embodiment of the present invention, a converter continuous casting molten steel purification control device is provided, which further includes: a permeable brick layer at the bottom of the transfer ladle, an air inlet fixedly connected to the surface of the permeable brick layer, and an air inlet fixedly connected to the air inlet hose.

[0011] For example, in at least one embodiment of the present invention, a converter continuous casting molten steel purification control device is provided, which further includes: a powder spraying mechanism is provided at the upper end of the device base, the powder spraying mechanism includes a first electric push rod, the output end of the first electric push rod is fixedly connected to a first mounting plate, the bottom end of the first mounting plate is fixedly connected to a second electric push rod, and the output end of the second electric push rod is fixedly connected to a second mounting plate.

[0012] For example, in at least one embodiment of the present invention, a converter continuous casting molten steel purification control device further includes: a second motor fixedly connected to one end of the upper part of the second mounting plate, a roller fixedly connected to the output shaft of the second motor, a rotary joint rotatably connected to another end of the upper part of the second mounting plate, a rotary spray gun fixedly connected to the bottom end of the rotary joint, a powder inlet hose fixedly connected to the top end of the rotary joint, and the roller being movably connected to the rotary joint.

[0013] The beneficial effects of the embodiments of this utility model are as follows: In this invention, a wire feeding mechanism is used to feed silicon-calcium wire into molten steel. The wire reacts with oxygen and oxides in the steel to generate calcium oxides, reducing the oxide content and improving the purity of the steel. This helps increase the alloy yield and reduce production costs. Argon gas is introduced through the inlet, promoting the removal of gases from the molten steel and reducing the content of hydrogen, oxygen, nitrogen, and other gases. Argon stirring also makes the composition and temperature of the molten steel more uniform, preventing localized overheating or component segregation. By setting a permeable brick layer at the bottom of the transfer ladle, the contact area between the molten steel and argon or slag is increased, promoting deoxidation, desulfurization, and dephosphorization reactions. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 for Figure 1 A schematic diagram of the steel ladle cover structure in the embodiment; Figure 3 for Figure 1 A schematic diagram of the powder spraying mechanism in the embodiment; Figure 4 for Figure 1 A schematic diagram of the wire feeding mechanism in the embodiment.

[0016] In the diagram: 1. Device base; 11. PLC controller; 12. First motor; 13. Hydraulic rod; 14. Steel ladle cover; 15. Laser spectral probe; 16. Electromagnetic ultrasonic sensor; 17. Transfer steel ladle; 18. Connecting shaft; 19. Breathable brick layer; 110. Air inlet; 111. Air inlet hose; 2. Powder spraying mechanism; 21. First electric push rod; 22. First mounting plate; 23. Second electric push rod; 24. Second mounting plate; 25. Second motor; 26. Roller; 27. Rotary joint; 28. Rotary spray gun; 29. ​​Powder inlet hose; 3. Wire feeding mechanism; 31. Mounting box; 32. Connecting rod; 33. Ceramic guide tube; 34. Third motor; 35. Active wire guide wheel; 36. Passive wire guide wheel. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0018] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0019] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] like Figures 1-4 As shown, it illustrates a converter continuous casting molten steel purification control device according to an embodiment of the present invention, comprising: a device base 1, The device base 1 includes a transfer ladle 17, and a wire feeding mechanism 3 is provided at the bottom end of the transfer ladle 17; The device base 1 also includes a hydraulic rod 13, and a steel ladle cover 14 is fixedly connected to the bottom end of the hydraulic rod 13; The wire feeding mechanism 3 includes a mounting box 31, and a third motor 34 is fixedly connected to one side of the mounting box 31.

[0024] Connecting rods 32 are fixedly connected to both sides inside the mounting box 31. A ceramic guide tube 33 is fixedly connected to the end of the connecting rod 32 away from the mounting box 31. The end of the ceramic guide tube 33 away from the mounting box 31 passes through the transfer ladle 17 and is fixedly connected to the transfer ladle 17. An active wire guide wheel 35 is fixedly connected to the output shaft of the third motor 34. The end of the active wire guide wheel 35 away from the output shaft of the third motor 34 is rotatably connected to the mounting box 31. A passive wire guide wheel 36 is meshed with one side of the active wire guide wheel 35. Both sides of the passive wire guide wheel 36 are rotatably connected to the mounting box 31.

[0025] A laser spectral probe 15 is fixedly connected to the center of the bottom of the steel ladle cover 14. Electromagnetic ultrasonic sensors 16 are evenly distributed in a ring at the bottom of the steel ladle cover 14 and are fixedly connected to the steel ladle cover 14.

[0026] A PLC controller 11 is fixedly connected to the bottom right side of the device base 1, and connecting shafts 18 are fixedly connected to both sides of the transfer ladle 17.

[0027] The end of the connecting shaft 18 away from the transfer ladle 17 is rotatably connected to the device base 1. The first motor 12 is fixedly connected to the middle of the right side of the device base 1. The output shaft of the first motor 12 passes through the device base 1 and is fixedly connected to the connecting shaft 18.

[0028] The bottom of the transfer ladle 17 is provided with a breathable brick layer 19, and an air inlet 110 is fixedly connected to the surface of the breathable brick layer 19. An air inlet hose 111 is fixedly connected to the air inlet 110.

[0029] In some examples, during the steel purification process, molten steel is first poured into a transfer ladle 17. A PLC controller 11 controls a hydraulic rod 13, which lowers the ladle cover 14, covering the top of the transfer ladle 17. A laser spectral probe 15, positioned at the bottom of the ladle cover 14, precisely analyzes the elemental composition of the molten steel. The laser spectral probe 15 can penetrate the oxide layer on the surface of the molten steel, detecting the steel composition at a depth of 300-500 mm below the surface, ensuring the representativeness and accuracy of the data. The laser spectral probe 15 is a SpectroLab S5 type probe. An electromagnetic ultrasonic sensor 16 is used to monitor the purity of the molten steel online. The electromagnetic ultrasonic sensor 16 is an Olympus Omniscan MX2 type sensor, which detects silicon and calcium... The wire is threaded between the active guide wheel 35 and the passive guide wheel 36. The active guide wheel 35 is driven to rotate by the third motor 34, which in turn drives the passive guide wheel 36 to rotate, feeding the silicon-calcium wire into the ceramic guide tube 33 and into the transfer ladle 17. After entering the molten steel, the silicon-calcium wire reacts with oxygen and oxides in the steel to generate calcium oxide, reducing the oxide content in the steel, improving the purity of the steel, helping to increase the alloy yield, and reducing production costs. Argon gas is introduced through the air inlet 110. Blowing in argon gas can promote the discharge of gases from the molten steel, reduce the content of gases such as hydrogen, oxygen, and nitrogen in the steel, and the argon blowing and stirring can make the composition and temperature of the molten steel more uniform, preventing local overheating or component segregation. By setting a permeable brick layer 19 at the bottom of the transfer ladle 17, the contact area between the molten steel and argon gas or slag can be increased, promoting deoxidation, desulfurization, dephosphorization and other reactions.

[0030] For example, such as Figure 3 As shown, a powder spraying mechanism 2 is provided at the upper end of the device base 1. The powder spraying mechanism 2 includes a first electric push rod 21. The output end of the first electric push rod 21 is fixedly connected to a first mounting plate 22. The bottom end of the first mounting plate 22 is fixedly connected to a second electric push rod 23. The output end of the second electric push rod 23 is fixedly connected to a second mounting plate 24.

[0031] A second motor 25 is fixedly connected to one end of the upper part of the second mounting plate 24. A roller 26 is fixedly connected to the output shaft of the second motor 25. A rotary joint 27 is rotatably connected to another end of the upper part of the second mounting plate 24. A rotary spray gun 28 is fixedly connected to the bottom end of the rotary joint 27. A powder inlet hose 29 is fixedly connected to the top end of the rotary joint 27. The roller 26 is movably connected to the rotary joint 27. In some examples, the first electric push rod 21 drives the second electric push rod 23 to move above the transfer ladle 17. The second electric push rod 23 drives the second mounting plate 24 to descend, allowing the rotary spray gun 28 to enter the molten steel. Alloy powder is injected into the rotary spray gun 28 through the powder inlet hose 29. The alloy powder reacts chemically with impurities in the molten steel, refining the steel and further improving its quality. The second motor 25 drives the roller 26 to rotate, which in turn drives the rotary joint 27 to rotate, allowing the rotary spray gun 28 to rotate inside the molten steel. This results in a more uniform spraying of the alloy powder. The rotary spray gun 28 is a Paul Wurth PSG-200 type spray gun.

[0032] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A converter continuous casting molten steel purification control device, comprising: The device base (1) is characterized in that, The device base (1) includes a transfer ladle (17), and a wire feeding mechanism (3) is provided at the bottom end of the transfer ladle (17). The device base (1) also includes a hydraulic rod (13), and a steel ladle cover (14) is fixedly connected to the bottom end of the hydraulic rod (13). The wire feeding mechanism (3) includes a mounting box (31), and a third motor (34) is fixedly connected to one side of the mounting box (31).

2. The converter continuous casting molten steel purification control device according to claim 1, characterized in that, Connecting rods (32) are fixedly connected to both sides of the interior of the mounting box (31). A ceramic guide tube (33) is fixedly connected to one end of the connecting rod (32) away from the mounting box (31). The ceramic guide tube (33) passes through the transfer ladle (17) and is fixedly connected to the transfer ladle (17) at one end away from the mounting box (31). An active wire guide wheel (35) is fixedly connected to the output shaft of the third motor (34). The active wire guide wheel (35) is rotatably connected to the mounting box (31) at one end away from the output shaft of the third motor (34). A passive wire guide wheel (36) is meshed with one side of the active wire guide wheel (35). Both sides of the passive wire guide wheel (36) are rotatably connected to the mounting box (31).

3. The converter continuous casting molten steel purification control device according to claim 1, characterized in that, A laser spectral probe (15) is fixedly connected to the center of the bottom of the steel cladding cover (14), and electromagnetic ultrasonic sensors (16) are evenly distributed in a ring at the bottom of the steel cladding cover (14). The electromagnetic ultrasonic sensors (16) are fixedly connected to the steel cladding cover (14).

4. The converter continuous casting molten steel purification control device according to claim 1, characterized in that, A PLC controller (11) is fixedly connected to the bottom right side of the device base (1), and connecting shafts (18) are fixedly connected to both sides of the transfer ladle (17).

5. The converter continuous casting molten steel purification control device according to claim 4, characterized in that, The end of the connecting shaft (18) away from the transfer ladle (17) is rotatably connected to the device base (1). A first motor (12) is fixedly connected to the middle right side of the device base (1). The output shaft of the first motor (12) passes through the device base (1) and is fixedly connected to the connecting shaft (18).

6. The converter continuous casting molten steel purification control device according to claim 1, characterized in that, The bottom end of the transfer ladle (17) is provided with a breathable brick layer (19), and an air inlet (110) is fixedly connected to the surface of the breathable brick layer (19), and an air inlet hose (111) is fixedly connected to the air inlet (110).

7. The converter continuous casting molten steel purification control device according to claim 1, characterized in that, The upper end of the device base (1) is provided with a powder spraying mechanism (2). The powder spraying mechanism (2) includes a first electric push rod (21). The output end of the first electric push rod (21) is fixedly connected to a first mounting plate (22). The bottom end of the first mounting plate (22) is fixedly connected to a second electric push rod (23). The output end of the second electric push rod (23) is fixedly connected to a second mounting plate (24).

8. The converter continuous casting molten steel purification control device according to claim 7, characterized in that, A second motor (25) is fixedly connected to one end of the upper part of the second mounting plate (24). A roller (26) is fixedly connected to the output shaft of the second motor (25). A rotary joint (27) is rotatably connected to another end of the upper part of the second mounting plate (24). A rotary spray gun (28) is fixedly connected to the bottom end of the rotary joint (27). A powder inlet hose (29) is fixedly connected to the top end of the rotary joint (27). The roller (26) is movably connected to the rotary joint (27).

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