Winding lifting type rotary desulfurization process equipment

Abstract

The utility model belongs to the technical field of steelmaking devices, and particularly relates to winch lifting type rotary desulfurization process equipment. The winch lifting type rotary desulfurization process equipment comprises a main frame, a transverse moving device, a lifting unit, a rotating device, a blowing device and a molten iron tank, the transverse moving device is arranged at the top end of the main frame, the lifting unit is connected with the transverse moving device, the rotating device is installed on the lifting unit, the blowing device is connected with the rotating device and comprises a spray gun, one end of the spray gun is provided with a blowing opening, and the blowing opening faces the molten iron tank. According to the structure, a rotary blowing desulfurization method can be realized, and the desulfurization efficiency can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of steelmaking equipment, and particularly relates to a hoisting and rotating desulfurization process equipment. Background Technique

[0002] In the current metallurgical steel manufacturing industry, with the continuous improvement of product quality requirements, hot metal pretreatment technology has become increasingly important. The hot metal desulfurization pretreatment methods commonly used in steel enterprises mainly include the injection method and the mechanical stirring method. In the injection method, desulfurization powder is injected into the hot metal through high-pressure gas, and the stirring action of the gas is used to promote the mixing of the desulfurization powder and the hot metal to achieve desulfurization. The advantages of this method are relatively low equipment cost, less reduction of hot metal temperature, and less iron loss. However, its disadvantage is that the kinetic conditions are relatively poor, the desulfurization efficiency is not high, and the reaction between the desulfurization powder and the hot metal is not sufficient.

[0003] On the other hand, in the mechanical stirring method, a stirrer is immersed in the hot metal and desulfurization powder is added. The rotation of the stirrer drives the hot metal to form a vortex, promoting the contact reaction between the desulfurization powder and the hot metal to achieve efficient desulfurization. Although this method has superior kinetic conditions and can provide stable and high desulfurization capacity, its disadvantages are that the desulfurizer is added on the surface of the hot metal, and some powder may be taken away by the dust removal system, resulting in increased consumption; at the same time, the reaction surface is relatively high, the reaction efficiency is relatively low, the hot metal temperature drops significantly, and two slag skimmings are required, increasing iron loss.

[0004] With the acceleration of the steelmaking production rhythm, the requirements for desulfurization efficiency are also constantly increasing. At present, industrial-scale hot metal desulfurization mainly uses the mechanical stirring method and the injection method, both of which are widely used in the industry and have their own advantages. In order to further improve the desulfurization efficiency, it is possible to consider combining the advantages of these two methods. For example, the rotating injection desulfurization method is expected to maintain relatively low equipment cost and less reduction of hot metal temperature while improving the desulfurization efficiency and the adequacy of the reaction, so as to achieve better desulfurization effect in steel production. At present, as a technology to improve hot metal desulfurization efficiency, the rotating injection desulfurization method has potential advantages, but it also faces some technical challenges in practical applications. The rotating injection desulfurization method has the potential to improve desulfurization efficiency, but at the same time, it is necessary to overcome technical challenges in many aspects, including optimization of kinetic conditions, improvement of desulfurizer utilization rate, splash control, equipment design, environmental impact, temperature control, process stability, and cost-effectiveness.

[0005] The utility model patent with the publication number CN213232356U discloses a mechanical stirring - follow - up dense - phase injection molten iron desulfurization device. However, since the follow - up spray gun and the stirring device are separate, improper operation may cause splashing of the desulfurizer. Moreover, when replacing the follow - up spray gun and the stirring device, it is easy to cause production interruption. Therefore, there is an urgent need to design a device that can further optimize the kinetic conditions, desulfurizer utilization rate, splash control, equipment design, environmental impact, temperature control, process stability, and cost - effectiveness of the desulfurizer injection device. Summary of the Invention

[0006] In view of this, the utility model provides a hoisting and rotating desulfurization process equipment, which stirs the molten iron while injecting, sends the desulfurizer to the deep part of the molten iron ladle. During the rising process of the gas mass wrapping the desulfurizer, the stirring paddle breaks it and disperses it, making the desulfurizer combine more fully with the molten iron and react more thoroughly, improving the desulfurizer utilization rate while reducing the desulfurization treatment time and the consumption of steel materials.

[0007] The hoisting and rotating desulfurization process equipment of the utility model includes a main frame, a transverse movement device, a lifting unit, a rotating device, an injection device, and a molten iron ladle; the transverse movement device is arranged at the top of the main frame, the lifting unit is connected to the transverse movement device, the rotating device is installed on the lifting unit, the injection device is connected to the rotating device, the injection device includes a spray gun, and one end of the spray gun is a spray port, and the spray port faces the molten iron ladle.

[0008] In some embodiments, the injection device further includes an injection material adding device. The spray gun includes a central tube with a hollow structure, and the upper part of the spray gun is connected to the injection material adding device and communicated with the central tube. The lower part of the spray gun is provided with a stirrer with a longitudinally penetrating opening, and the bottom opening of the stirrer is the spray port.

[0009] In some embodiments, the transverse movement device includes a fixed track. The lifting unit includes a lifting motor, a coupling, a drum, and a fixed pulley connected in sequence by a steel rope. The lifting motor, the coupling, the drum, and the fixed pulley are slidably connected to the fixed track;

[0010] The main frame includes a top - layer platform and a gun - changing platform. The lifting motor, the coupling, the drum, and the fixed pulley and the fixed track are arranged on the top - layer platform. The top - layer platform includes a hollow structure adapted for the steel rope to pass through. One end of the steel rope is connected to the lifting motor, the coupling, the drum, and the fixed pulley in sequence, and the other end passes through the hollow structure and is connected to the rotating device. An activity slideway extending along a direction perpendicular to the moving direction of the lifting unit is arranged outside the rotating device, and the activity slideway can follow the rotating device to move horizontally along the fixed track; the rotating device can slide along the activity slideway;

[0011] The gun-changing platform is provided with a working position for the blowing device to pass through. A fixed slideway extending along a direction perpendicular to the moving direction of the lifting unit is arranged at a position perpendicular to the moving direction of the traversing device. The movable slideway is adapted to the fixed slideway, and the movable slideway moves horizontally along with the fixed track and is connected to the fixed track as a whole. One end of the movable slideway extends to the top platform, and one end of the fixed slideway extends to the working position.

[0012] In some embodiments, the rotating device includes a rotating motor, a rotating joint, a rotating main shaft and a base which are coaxially connected, and the base is connected to the spray gun.

[0013] In some embodiments, the base is provided with a spray gun gripper, and the spray gun is connected to the base through the spray gun gripper.

[0014] In some embodiments, the lifting unit further includes a first reduction gear and a first brake. The first reduction gear and the first brake are sequentially arranged between the coupling and the drum, and the first reduction gear, the brake, the coupling and the drum are sequentially connected by steel ropes.

[0015] In some embodiments, the rotating device further includes a second reduction gear and a lubricating oil pump. The second reduction gear and the lubricating oil pump are sequentially arranged between the rotating motor and the rotating joint, and are sequentially connected to the rotating motor and the rotating joint.

[0016] In some embodiments, four independent steel ropes are arranged on the drum and are respectively connected to the rotating device.

[0017] In some embodiments, a traveling motor and a second brake capable of driving the lifting unit to traverse along the traversing device are arranged between the lifting unit and the traversing device.

[0018] In some embodiments, there are two groups of the traversing device and the lifting unit connected to the traversing device.

[0019] The beneficial effects of the present utility model at least include:

[0020] By connecting the lifting unit, the rotating device and the blowing device, the present utility model can control the rotation of the blowing device and the depth of penetration into the molten iron, and can further more accurately send the desulfurizer to the deep part of the molten iron ladle. When the gas mass wrapping the desulfurizer rises, the present utility model integrates the stirring and blowing functions in the blowing device. The blowing device rotates and blows through the rotating device to break it, disperse the gas mass of the desulfurizer, make the desulfurizer combine more fully with the molten iron, react more thoroughly, improve the utilization rate of the desulfurizer while reducing the desulfurization treatment time and the consumption of steel materials. Description of the Drawings

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other embodiments can be obtained based on these drawings.

[0022] Figure 1 Schematic diagram of a hoisting and lifting type rotary desulfurization process equipment provided by some embodiments of the present invention.

[0023] Explanation of reference numerals

[0024] 1. Drum; 2. Lifting motor; 3. Fixed pulley; 401. Movable slideway; 402. Fixed slideway; 5. Rotary motor; 601. First reducer; 602. Second reducer; 7. Fixed track; 8. Spray gun; 9. Hot metal ladle. Detailed implementation manners

[0025] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the following further details the embodiments of the present invention in conjunction with specific embodiments and with reference to the drawings.

[0026] It should be noted that all the expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two entities or parameters with the same name but different, and it can be seen that "first" and "second" are only for the convenience of expression and should not be construed as a limitation on the embodiments of the present invention. This will not be elaborated in the subsequent embodiments one by one.

[0027] As Figure 1 shown, the hoisting and lifting type rotary desulfurization process equipment of the present invention includes a main frame, a transverse movement device, a lifting unit, a rotary device, a spraying device, and a hot metal ladle 9; the transverse movement device is arranged at the top of the main frame, the lifting unit is connected to the transverse movement device, the rotary device is installed on the lifting unit, the spraying device is connected to the rotary device, the spraying device includes a spray gun 8, and one end of the spray gun 8 is a spraying port, and the spraying port faces the hot metal ladle 9.

[0028] Through the connection of the lifting unit, the rotary device, and the spraying device, the present invention can control the rotation of the spraying device and the depth of penetration into the hot metal, and can further more accurately send the desulfurizer to the deep part of the hot metal ladle 9. When the gas mass wrapped with the desulfurizer rises, the present invention integrates the stirring and spraying functions in the spraying device. The spraying device rotates and sprays through the rotary device, breaks it, disperses the gas mass of the desulfurizer, makes the desulfurizer combine more fully with the hot metal, reacts more thoroughly, improves the utilization rate of the desulfurizer, and reduces the desulfurization treatment time and the consumption of steel materials at the same time.

[0029] In some embodiments, the injection device further includes an injection material adding device. The lance 8 includes a central tube with a hollow structure, and the upper part of the lance 8 is connected to the injection material adding device and communicated with the central tube. A stirrer with a longitudinally penetrating opening is arranged at the lower part of the lance 8, and the bottom opening of the stirrer is the injection port.

[0030] The injection device of the present utility model realizes the integrated function of injection and stirring, realizes the direct addition and injection of the desulfurizer, and at the same time, the design of the stirrer enhances the mixing of the desulfurizer and the molten iron, further improving the desulfurization efficiency and uniformity. In the present utility model, the stirrer can be a stirring paddle arranged at the lower part of the lance 8.

[0031] In some embodiments, the traversing device includes a fixed track 7. The lifting unit includes a lifting motor 2, a coupling, a drum 1 and a fixed pulley 3 connected in sequence by a steel wire rope. The lifting motor 2, the coupling, the drum 1 and the fixed pulley 3 are slidably connected to the fixed track 7;

[0032] The main frame includes a top platform and a lance changing platform. The lifting motor 2, the coupling, the drum 1 and the fixed pulley 3 and the fixed track 7 are arranged on the top platform. The top platform includes a hollow structure adapted for the passage of the steel wire rope. One end of the steel wire rope is connected to the lifting motor 2, the coupling, the drum 1 and the fixed pulley 3 in sequence, and the other end passes through the hollow structure and is connected to the rotating device. An activity slideway 401 extending along a direction perpendicular to the moving direction of the lifting unit is arranged outside the rotating device. The activity slideway 401 can traverse along the fixed track 7 following the rotating device; the rotating device can slide along the activity slideway 401;

[0033] The lance changing platform is provided with a working position adapted for the passage of the injection device. A fixed slideway 402 extending along a direction perpendicular to the moving direction of the traversing device is arranged at a position perpendicular to the moving direction of the traversing device. The activity slideway 401 is adapted to the fixed slideway 402. The activity slideway 401 moves horizontally along the fixed track 7 and is connected to the fixed track 7 as a whole. One end of the activity slideway 401 extends to the top platform, and one end of the fixed slideway 402 extends to the working position.

[0034] The design of the traversing device and the lifting unit allows the rotating desulfurization process equipment to move and position flexibly above the molten iron ladle 9. Through the cooperation of the fixed track 7 and the activity slideway 401, precise horizontal and vertical adjustments are realized, improving the flexibility and coverage of the operation.

[0035] In some embodiments, the rotating device includes a rotating motor 5, a rotary joint, a rotating main shaft, and a base that are coaxially connected, and the base is connected to the spray gun 8. The spray gun 8 can rotate following the rotating motor 5, enabling more precise control of the kinetic conditions during desulfurization and optimizing the utilization rate of desulfurizing agents.

[0036] To ensure the accuracy and safety of the desulfurization operation, in some embodiments, the base is provided with a spray gun 8 holder, and the spray gun 8 is connected to the base through the spray gun 8 holder. The use of the spray gun 8 holder ensures a stable connection between the spray gun 8 and the base, preventing displacement or vibration of the spray gun 8 during the spraying process.

[0037] To further enhance safety, reliability, and the operability of the equipment, in some embodiments, the lifting unit further includes a first reduction gear 601 and a first brake. The first reduction gear 601 and the first brake are sequentially arranged between the coupling and the drum 1, and the first reduction gear 601, the brake, the coupling, and the drum 1 are sequentially connected by steel ropes. The arrangement of the reduction gear and the brake in the lifting unit provides better speed control and emergency stop functions, improving the safety of the equipment and the reliability of operation.

[0038] In some embodiments, the rotating device further includes a second reduction gear 602 and a lubricating oil pump. The second reduction gear 602 and the lubricating oil pump are sequentially arranged between the rotating motor 5 and the rotary joint and are sequentially connected to the rotating motor 5 and the rotary joint. The function of the second reduction gear 602 is to accurately control the rotation speed of the rotary joint and optimize the kinetic parameters of the desulfurizing agent spraying and stirring.

[0039] In some embodiments, four independent steel ropes are arranged on the drum 1 and are respectively connected to the rotating device. The four independent steel ropes arranged on the drum 1 provide multiple connection points, increasing the stability and load-bearing capacity of the rotating device and ensuring the stability of the rotating desulfurization process equipment during operation.

[0040] In some embodiments, a traveling motor and a second brake for driving the lifting unit to traverse along the traversing device are arranged between the lifting unit and the traversing device. The arrangement of the traveling motor and the second brake enables the lifting unit to move smoothly on the traversing device, increasing the lateral movement ability of the equipment, expanding the operation range, and improving the operation efficiency.

[0041] To further improve the working efficiency, in some embodiments, there are two groups of the traversing device and the lifting unit connected to the traversing device. In this way, there is always a spray device that can be used for replacement in the equipment, ensuring that the operation is not interrupted midway.

[0042] According to the set position, start the traveling motor to align the lifting unit along the transverse movement device to the working position. After the lifting unit is transversely moved to the corresponding position of the working position, connect the movable slide rail and the fixed slide rail in the lifting unit into one body. Start the lifting motor 2 on the top layer platform. Driven by the steel rope, longitudinally move the rotary motor 5 along the integrated slide rail connected by the movable slide rail and the fixed slide rail, so that the spray gun 8 extends into the hot metal ladle 9. The desulfurization powder enters the central pipe of the spray gun 8 from the blowing material adding device and is blown into the hot metal ladle 9 from the blowing port under the action of high-pressure air flow. At the same time, start the rotary motor 5 to stir the spray gun 8 in the hot metal ladle 9 to realize rotary injection desulfurization. After reaching the set parameters, start the lifting motor 2 to drive the rotary motor 5 to move the spray gun 8 out of the hot metal ladle 9.

[0043] When it is necessary to replace the spray gun 8, start the traveling motor to align the lifting unit along the transverse movement device to the working position. After the lifting unit is transversely moved to the corresponding position of the working position, connect the movable slide rail and the fixed slide rail in the lifting unit into one body. Start the lifting motor 2 on the top layer platform. Driven by the steel rope, longitudinally move the rotary motor 5 along the integrated slide rail connected by the movable slide rail and the fixed slide rail. At this time, the spraying device is lifted to the gun replacement platform through the working position, and the staff can replace the spraying device on the gun replacement platform.

[0044] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0045] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A winch-lifting type rotary desulfurization process equipment, characterized in that, It includes a main frame, a transverse movement device, a lifting unit, a rotating device, a blowing device and a molten iron ladle (9); the transverse movement device is arranged at the top end of the main frame, the lifting unit is connected to the transverse movement device, the rotating device is installed on the lifting unit, the blowing device is connected to the rotating device, the blowing device includes a lance (8), one end of the lance (8) is a blowing port, and the blowing port faces the molten iron ladle (9); The blowing device further includes a blowing material adding device. The lance (8) includes a central tube with a hollow structure, and the upper part of the lance (8) is connected to the blowing material adding device and communicated with the central tube. A stirrer with a longitudinally penetrating opening is arranged at the lower part of the lance (8), and the bottom opening of the stirrer is the blowing port.

2. The winch-lifting type rotary desulfurization process equipment according to claim 1, characterized in that, The transverse movement device includes a fixed track (7). The lifting unit includes a hoisting motor (2), a coupling, a drum (1) and a fixed pulley (3) connected in sequence by a steel wire rope. The hoisting motor (2), the coupling, the drum (1) and the fixed pulley (3) are slidably connected to the fixed track (7); The main frame includes a top layer platform and a gun changing platform. The hoisting motor (2), the coupling, the drum (1) and the fixed pulley (3) and the fixed track (7) are arranged on the top layer platform. The top layer platform includes a hollow structure adapted for the passage of the steel wire rope. One end of the steel wire rope is connected to the hoisting motor (2), the coupling, the drum (1) and the fixed pulley (3) in sequence, and the other end passes through the hollow structure to connect the rotating device. An activity slideway (401) extending along a direction perpendicular to the moving direction of the lifting unit is arranged outside the rotating device. The activity slideway (401) can move horizontally along the fixed track (7) following the rotating device; the rotating device can slide along the activity slideway (401); The gun changing platform is provided with a working position adapted for the passage of the blowing device. A fixed slideway (402) extending along a direction perpendicular to the moving direction of the lifting unit is arranged at a position perpendicular to the moving direction of the transverse movement device. The activity slideway (401) is adapted to the fixed slideway (402). The activity slideway (401) moves horizontally along with the fixed track (7) and is connected to the fixed track (7) as a whole. One end of the activity slideway (401) extends to the top layer platform, and one end of the fixed slideway (402) extends to the working position.

3. The hoisting and rotating desulfurization process equipment according to claim 2, characterized in that, The rotating device includes a rotating motor (5), a rotary joint, a rotating main shaft and a base connected coaxially. The base is connected to the lance (8).

4. The winch-lifting type rotary desulfurization process equipment according to claim 3, characterized in that, The base is provided with a lance gripper, and the lance (8) is connected to the base through the lance gripper.

5. The winch-lifting type rotary desulfurization process equipment according to claim 2, characterized in that, The lifting unit further includes a first speed reducer (601) and a first brake. The first speed reducer (601) and the first brake are arranged between the coupling and the drum (1) in sequence. The first speed reducer (601), the first brake, the coupling and the drum (1) are connected by a steel wire rope in sequence.

6. The hoisting and rotating desulfurization process equipment according to claim 3, characterized in that, The rotating device further includes a second speed reducer (602) and a lubricating oil pump. The second speed reducer (602) and the lubricating oil pump are sequentially arranged between the rotating motor (5) and the rotary joint, and are sequentially connected to the rotating motor (5) and the rotary joint.

7. The hoisting and lifting type rotary desulfurization process equipment according to claim 2, characterized in that, Four independent steel ropes are arranged on the drum (1) and are respectively connected to the rotating device.

8. The hoisting and rotating desulfurization process equipment according to claim 2, characterized in that, A traveling motor and a second brake capable of driving the lifting unit to traverse along the transverse movement device are arranged between the lifting unit and the transverse movement device.

9. The hoisting and rotating desulfurization process equipment according to claim 1, wherein The transverse movement device and the lifting units connected to the transverse movement device are two groups.

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