A device for removing slag from the surface of molten iron

Abstract

This invention relates to the field of molten iron slag removal technology, specifically to a device for removing floating slag from the surface of molten iron. The device includes a mounting frame and a slag-removing ladle hinged at the lower end of the mounting frame. The ladle consists of a left ladle body and a right ladle body that are joined together, and both are synchronously controlled by a lifting module fixed in the middle of the mounting frame. In the non-removing state, the left and right ladle bodies are positioned far apart; in the removing state, they are positioned close together. A guiding module is horizontally fixed inside the mounting frame, close to and above the slag-removing ladle, to guide the floating desulfurization slag on the surface of the molten iron in the ladle towards the center. A connecting flange for connecting to a rotary actuator is also fixedly installed on the top of the mounting frame. This invention not only allows for comprehensive slag removal without dead zones, but also offers high efficiency and effectiveness.

Description

Technical Field

[0001] This invention relates to the field of molten iron slag removal technology, specifically to a device for removing floating slag from the surface of molten iron. Background Technology

[0002] The prior art CN 218460856 U discloses a novel slag-removing ladle for molten iron, including a molten iron ladle. The molten iron ladle is equipped with a traveling assembly, and the traveling assembly has two placement cables. The bottom ends of the two placement cables are connected to lifting blocks, and the bottom ends of the two lifting blocks are fixedly installed with slag-removing ladles. The two slag-removing ladles are symmetrically arranged and are both concave semicircles. With this novel molten iron slag-removing ladle, after the molten iron ladle is transported to the slag-removing position by a moving train frame, the slag-removing ladles are placed into the molten iron ladle by the traveling assembly. Powdered desulfurizing agent is added through the powder addition port on the slag-removing ladles and the internal steel pipe. Then, the height of the two slag-removing ladles is changed by the traveling assembly to control their movement, so that they move up and down in the molten iron ladle to play a stirring role. After the desulfurizing agent has fully contacted and reacted with the molten iron, the desulfurized slag produced will float on the surface of the molten steel due to buoyancy. By changing the height of the traveling assembly to make the two slag-removing ladles at the same height and lifting the two slag-removing ladles evenly, the desulfurized slag can be carried away from the molten iron ladle.

[0003] The above-mentioned technical problems are as follows: the slag ladle is pressed into the molten iron ladle parallel to the surface of the molten iron. The desulfurization slag that has already formed on the surface of the molten iron will be pressed into the molten iron ladle. The desulfurization slag is always below the bottom of the slag ladle. When the slag ladle rises to pick up the desulfurization slag, the desulfurization slag below the bottom of the slag ladle cannot be picked up. The retrieval effect is poor, the retrieval is not comprehensive, and there are blind spots in the retrieval. Summary of the Invention

[0004] To address the aforementioned problems, a device for removing floating slag from the surface of molten iron is provided. This device not only comprehensively removes desulfurization slag but also eliminates blind spots in the removal process. This solves the technical problem of existing slag removal equipment where desulfurization slag is pressed into the molten iron ladle and remains below the bottom of the slag ladle. When the slag ladle rises to retrieve the desulfurization slag, the slag below the bottom of the ladle cannot be removed, resulting in poor slag removal and incomplete removal.

[0005] To address the problems of existing technologies, this invention provides a device for removing floating slag from the surface of molten iron, comprising a mounting frame and a slag-removing ladle hinged at the lower end of the mounting frame. The slag-removing ladle consists of a left ladle body and a right ladle body that are joined together, and both the left and right ladle bodies are synchronously controlled by a lifting module fixedly mounted in the middle of the mounting frame. In the non-removing state, the left and right ladle bodies are positioned far apart from each other, while in the removing state, they are positioned close together. A guiding module is horizontally fixedly mounted inside the mounting frame, close to and above the slag-removing ladle, to guide the desulfurization slag floating on the surface of the molten iron in the ladle towards the center. A connecting flange for connecting to a rotary drive is also fixedly mounted on the top of the mounting frame. The slag-removing ladle includes a left ladle body and a right ladle body, and the left and right ladle bodies are hinged to the mounting frame via hinged frames located near one side of the mounting frame. A traction component is also provided in the middle of the left and right ladle bodies near their joint, and the left and right ladle bodies are connected to the lifting module via the traction component.

[0006] Preferably, the lifting module includes a winding wheel with a first winding section and a second winding section; two sets of traction ropes are wound around the first and second winding sections respectively, and the traction ends of the two sets of traction ropes are fixedly connected to traction components provided on the left and right scoop bodies respectively; the winding wheel is horizontally rotatable in the middle of the mounting frame via a rotating shaft; a friction wheel is coaxially fixedly provided at the end of the rotating shaft; a one-way locking element is fixedly provided on one side of the mounting frame to lock the rotation direction of the rotating shaft in one direction.

[0007] Preferably, the traction component is a steel bar.

[0008] Preferably, the top of the left and right ladles is also fixedly provided with an arc-shaped enclosure.

[0009] Preferably, the guide module includes a connector, a mounting plate, and a guide plate; the connector is horizontally positioned inside the mounting frame and close to the bottom of the mounting frame; the guide plate is fixedly positioned at the end of the connector via the mounting plate in an inclined state.

[0010] Preferably, the connecting seat and the mounting plate are hinged together by a hinge.

[0011] Preferably, the guide plate is an arc-shaped plate.

[0012] Preferably, the traction rope is a ceramic fiber rope.

[0013] Preferably, the outer walls of the left and right ladle bodies are further provided with several reflux holes.

[0014] The advantages of this invention compared to the prior art are: This invention addresses the issue of preventing desulfurized slag from being re-pressed into the molten iron before it is removed by using a modular slag-removing ladle. A lifting module enables the left and right ladle bodies, which are initially positioned far apart, to be joined together to form a slag-removing ladle that removes the desulfurized slag from top to bottom. A guiding module guides the desulfurized slag overflowing from the edge of the molten iron ladle to the center, facilitating the removal of the slag from the ladle. Attached Figure Description

[0015] Figure 1 This is a three-dimensional diagram of a device for removing slag from the surface of molten iron.

[0016] Figure 2 A three-dimensional device for removing slag from molten iron surfaces. Figure 1 .

[0017] Figure 3 yes Figure 2 A magnified view of part A.

[0018] Figure 4 This is a side view of a molten iron bucket being removed from a slag removal device on the surface of molten iron.

[0019] Figure 5 This is a three-dimensional diagram of the slag removal process in a molten iron surface slag removal device, showing the slag removal process in a molten iron bucket.

[0020] Figure 6 A three-dimensional device for removing slag from molten iron surfaces. Figure 2 .

[0021] The numbers on the map are: 1. Mounting bracket; 2. Slag scoop; 21. Left scoop body; 22. Right scoop body; 23. Hinge frame; 24. Traction component; 25. Arc-shaped enclosure; 3. Lifting module; 31. Winding reel; 32. Traction rope; 33. Shaft; 34. One-way locking element; 35. Friction wheel; 4. Guide module; 41. Connector; 42. Mounting plate; 43. Guide plate; 44. Hinge; 5. Connecting flange. Detailed Implementation

[0022] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0023] See Figures 1 to 6As shown: A device for removing slag from the surface of molten iron includes a mounting frame 1 and a slag-removing ladle 2 hinged to the lower end of the mounting frame 1. The slag-removing ladle 2 is composed of a left ladle body 21 and a right ladle body 22 that are joined together, and both the left ladle body 21 and the right ladle body 22 are synchronously controlled by a lifting module 3 fixedly installed in the middle of the mounting frame 1. In the non-removing state, the left ladle body 21 and the right ladle body 22 are set far apart from each other, and in the removing state, the left ladle body 21 and the right ladle body 22 are set close to each other. A guide module 4 is horizontally fixed inside the mounting frame 1 and close to the slag-removing ladle 2. Located above the slag ladle 2, it is used to gather the desulfurization slag floating on the surface of the molten iron in the molten iron bucket 6 towards the center; the top of the mounting frame 1 is also fixedly provided with a connecting flange 5 for connecting to the rotary drive; the slag ladle 2 includes a left ladle body 21 and a right ladle body 22, and the left ladle body 21 and the right ladle body 22 are respectively hinged to the mounting frame 1 through a hinge frame 23 provided near the side of the mounting frame 1; the left ladle body 21 and the right ladle body 22 are also provided with a traction member 24 near the middle of the splicing point, and the left ladle body 21 and the right ladle body 22 are respectively connected to the lifting module 3 through the traction member 24.

[0024] In operation, the mounting frame 1 is connected to the drive end of the rotary drive via the connecting flange 5 at the top. The rotary drive is fixedly mounted on the driving device, which is existing technology and will not be described in detail here. It is used to drive the device to lift, rotate, and move horizontally. When it is necessary to retrieve the desulfurization slag from the molten iron drum 6, the retrieval device is driven coaxially downwards into the molten iron drum 6 by the driving device. During the descent, the left ladle body 21 and the right ladle body 22 are positioned away from each other under the drive of the lifting module 3, thereby reducing the contact area with the molten iron and avoiding the problem of pushing the desulfurization slag floating on the surface of the molten iron back into the molten iron. The lifting module 3 operates after the left ladle body 21 and the right ladle body 22 are completely inside the molten iron, driving the left ladle body 21... The left and right ladles 21 and 22 are combined to form the slag scoop 2. Since the left and right ladles 21 and 22 close to form the slag scoop 2 after entering the molten iron, the slag scoop 2 is positioned directly below the desulfurization slag. However, in order to ensure that the slag scoop 2 can smoothly enter the molten iron bucket 6, the diameter of the combined slag scoop 2 is generally smaller than the inner diameter of the molten iron bucket 6. This means that when the slag scoop 2 is located in the molten iron, it cannot completely scoop the desulfurization slag that has overflowed to the edge of the molten iron bucket 6. At this time, it is necessary to control the scooping device to slowly rotate axially through the driving device. During the rotation, the guide module 4 guides the desulfurization slag that has overflowed to the edge of the molten iron bucket 6 toward the center of the molten iron bucket 6, thereby achieving a one-time and comprehensive scooping of the desulfurization slag in the molten iron bucket 6.

[0025] The slag scoop 2 is a hollow, open-top conical shell divided into two parts, forming the left scoop body 21 and the right scoop body 22. When the left scoop body 21 and the right scoop body 22 are joined together, they form a complete conical shell, thereby enabling effective scooping of desulfurization slag from the molten iron. When the left scoop body 21 and the right scoop body 22 are far apart, the contact area with the molten iron is minimized as they sink into the molten iron. Furthermore, the conical shape of the slag scoop 2 further reduces contact with the desulfurization slag, effectively preventing the desulfurization slag from being re-pressed into the molten iron during the placement of the scoop.

[0026] See Figure 4 As shown: The lifting module 3 includes a winding wheel 31, which is provided with a first winding section and a second winding section; two sets of traction ropes 32 are wound around the first winding section and the second winding section respectively, and the traction ends of the two sets of traction ropes 32 are fixedly connected to the traction members 24 provided on the left scoop body 21 and the right scoop body 22 respectively; the winding wheel 31 is horizontally rotatable in the middle of the mounting frame 1 via a rotating shaft 33; the friction wheel 35 is coaxially fixedly provided at the end of the rotating shaft 33; the one-way locking element 34 is fixedly provided on one side of the mounting frame 1 to one-way lock the rotation direction of the rotating shaft 33.

[0027] The one-way locking element 34 consists of cooperating ratchet teeth and pawls, which drive the rotating shaft 33 to rotate only in one direction toward the direction used to wind up the traction rope 32; this is prior art and will not be described in detail here; in the working state, when it is necessary to drive the left ladle body 21 and the right ladle body 22, which are submerged in molten iron, to be joined together, the friction wheel 35 is driven to rotate by an external driving device. The friction wheel 35 drives the rotating shaft 33 to rotate in the direction used to wind up the traction rope 32. Thus, the traction rope 32 is wound up by the two winding ends respectively, thereby simultaneously lifting the two left ladle bodies 21 and the right ladle bodies 22, which are set far apart from each other, and scooping up the desulfurization slag with the slag scooping ladle 2; the external driving device is a rotary driver, which is used to drive the rotating shaft 33 to rotate, and the rotary driver is also directly set on one side of the mounting frame 1 to drive the rotating shaft 33 to rotate.

[0028] See Figure 2 As shown: the traction component 24 is a steel bar.

[0029] In the working state, the traction component 24 is fixedly connected to the lifting end of the lifting module 3, thereby driving the left ladle body 21 and the right ladle body 22 to rotate. Since the left ladle body 21 and the right ladle body 22 will be immersed in the molten iron in the rotating state, the steel strip of the traction component 24 is used to transition and connect them to avoid damage to the traction rope 32 by the molten iron. This can effectively drive the left ladle body 21 and the right ladle body 22 to rotate synchronously without affecting the traction rope 32.

[0030] See Figure 3 As shown: The top of the left ladle body 21 and the right ladle body 22 are also fixedly provided with arc-shaped enclosures 25.

[0031] In operation, the arc-shaped enclosure 25 is used to increase the internal load-bearing volume of the assembled scooping scoop, so that the assembled scooping scoop can carry more desulfurization slag, achieving the purpose of scooping out the desulfurization slag in one go.

[0032] See Figure 3 As shown: The guide module 4 includes a connecting seat 41, a mounting plate 42 and a guide plate 43; the connecting seat 41 is horizontally disposed inside the mounting frame 1 and close to the bottom of the mounting frame 1; the guide plate 43 is fixedly disposed at the end of the connecting seat 41 in an inclined state through the mounting plate 42.

[0033] The angle between the mounting plate 42 and the connecting seat 41 is an acute angle, and the guide plate 43 is tilted towards the side of the mounting frame 1 that rotates. In the working state, when the left ladle body 21 and the right ladle body 22 merge into a slag-removing ladle 2 in the molten iron, the retrieval device slowly rotates after the driving device is removed. During the rotation, the tilted guide plate 43 will continuously scrape the desulfurization slag located inside the molten iron bucket 6, and under the action of the tilted guide plate 43, guide the desulfurization slag located at the edge of the molten iron bucket 6 to converge towards the center, thereby realizing the work of retrieval of the desulfurization slag in the molten iron bucket 6 together during the process of lifting the slag-removing ladle 2.

[0034] See Figure 3 As shown: The connecting seat 41 and the mounting plate 42 are hinged together by a hinge member 44.

[0035] In the working state, the connecting seat 41 and the mounting plate 42 are hinged together by the hinge 44, which can realize the autonomous adjustment of the tilt angle of the mounting plate 42. Thus, the tilt angle of the mounting plate 42 can be autonomously adjusted according to the distance between the outer edge of the slag ladle 2 and the inner wall of the molten iron bucket 6, thereby realizing the slag removal work applicable to molten iron buckets 6 with different inner diameters.

[0036] See Figure 3 As shown: The guide plate 43 is an arc-shaped plate.

[0037] In operation, by setting the guide plate 43 in an arc shape, a better guiding effect can be achieved; it is not limited to an arc shape and can also be other shapes to guide the desulfurization slag located at the edge to converge to the center.

[0038] See Figure 4 As shown: The traction rope 32 is a ceramic fiber rope.

[0039] In operation, ceramic fiber ropes can typically withstand temperatures as high as 1260°C to 1600°C; by using ceramic fiber ropes as traction ropes 32, the technical problem of melting due to high temperatures of molten iron can be effectively avoided.

[0040] See Figure 4 As shown: The outer walls of the left ladle body 21 and the right ladle body 22 are also provided with several reflux holes 26.

[0041] In operation, the return hole 26 is used to allow the molten iron that is carried up during the slag removal process to flow back into the molten iron bucket 6.

[0042] This invention can not only comprehensively remove desulfurization slag, but also eliminate dead spots in the removal process, resulting in high efficiency and good effect.

[0043] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. A device for removing slag from the surface of molten iron, characterized in that, The system includes a mounting frame (1) and a slag scoop (2) hinged at the lower end of the mounting frame (1). The slag scoop (2) is composed of a left scoop body (21) and a right scoop body (22) that are joined together. The left scoop body (21) and the right scoop body (22) are both synchronously controlled by a lifting module (3) fixedly installed in the middle of the mounting frame (1). In the non-scooping state, the left scoop body (21) and the right scoop body (22) are set far apart from each other. In the scooping state, the left scoop body (21) and the right scoop body (22) are set close to each other. The guide module (4) is fixedly installed horizontally inside the mounting frame (1) and close to the slag scoop (2) and located above the slag scoop (2). Used to gather the desulfurization slag floating on the surface of the molten iron in the iron bucket (6) toward the center; the top of the mounting frame (1) is also fixedly provided with a connecting flange (5) for connecting with the rotary drive; the slag scoop (2) includes a left scoop body (21) and a right scoop body (22), and the left scoop body (21) and the right scoop body (22) are respectively hinged to the mounting frame (1) through a hinge frame (23) provided near the side of the mounting frame (1); the left scoop body (21) and the right scoop body (22) are also provided with a traction member (24) near the middle of the splicing point, and the left scoop body (21) and the right scoop body (22) are respectively connected to the lifting module (3) through the traction member (24).

2. The slag removal device for molten iron surface according to claim 1, characterized in that, The lifting module (3) includes a winding wheel (31) and the winding wheel (31) is provided with a first winding section and a second winding section; two sets of traction ropes (32) are wound around the first winding section and the second winding section respectively, and the traction ends of the two sets of traction ropes (32) are fixedly connected to the traction members (24) provided on the left gourd body (21) and the right gourd body (22) respectively; the winding wheel (31) is horizontally rotated and set in the middle of the mounting frame (1) through the rotating shaft (33); the friction wheel (35) is coaxially fixedly set at the end of the rotating shaft (33); the one-way locking element (34) is fixedly set on one side of the mounting frame (1) to lock the rotation direction of the rotating shaft (33) in one direction.

3. The slag removal device for molten iron surface according to claim 1, characterized in that, The traction component (24) is a steel bar.

4. The slag removal device for molten iron surface according to claim 1, characterized in that, The top of the left gourd body (21) and the right gourd body (22) are also fixedly provided with arc-shaped enclosures (25).

5. The slag removal device for molten iron surface according to claim 1, characterized in that, The guide module (4) includes a connecting seat (41), a mounting plate (42) and a guide plate (43); the connecting seat (41) is horizontally positioned inside the mounting frame (1) and close to the bottom of the mounting frame (1); the guide plate (43) is fixedly positioned at the end of the connecting seat (41) by means of the mounting plate (42) in an inclined state.

6. The slag removal device for molten iron surface according to claim 5, characterized in that, The connecting seat (41) and the mounting plate (42) are hinged together by a hinge (44).

7. The slag removal device for molten iron surface according to claim 5, characterized in that, The guide plate (43) is an arc-shaped plate.

8. The slag removal device for molten iron surface according to claim 2, characterized in that, The traction rope (32) is a ceramic fiber rope.

9. The slag removal device for molten iron surface according to claim 1, characterized in that, The outer walls of the left ladle body (21) and the right ladle body (22) are also provided with several reflux holes (26).

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