A kind of preventing slag inclusion tundish dam

Abstract

The utility model relates to the technical field of steelmaking, proposes a prevent winding slag tundish dam wall, include: the package body, dam wall, impact, baffle and ceramic filter block, the bottom of package body is set up with a plurality of effluent holes, the impact is located one side of package body, the outer wall of dam wall is fixedly connected with the connecting plate, the connecting plate is fixedly connected in the inner wall of package body, the outer surface of package body is fixedly connected with a plurality of blocking cover, the outer wall of blocking cover is set up with a plurality of flow -through holes. The multiple molten steel flow -through holes set up in the dam wall make molten steel can be more quickly, the steady entering package body inside, the setting of molten steel flow -through hole higher than baffle, make the output floating steel slag can be first stopped by baffle, the setting of baffle and inclined plate different height, make the flow of molten steel more steady, reduce the fluctuation of molten steel, reduce the generation of eddy current, reduce the generation of winding slag condition.

Description

Technical Field

[0001] This utility model belongs to the field of steelmaking technology, specifically relating to a slag-blocking wall for preventing slag entrapment in a tundish. Background Technology

[0002] The tundish retaining wall is a device used in continuous casting to improve the flow of molten steel, increase the residence time of molten steel, and promote the floating and effective removal of inclusions.

[0003] A known authorized patent with application number 202221985921.4 discloses a slag-blocking wall for preventing slag entanglement in the tundish. The wall includes a slag-blocking wall body with two steel tapping holes and two baffles. This utility model has a reasonable design, adding an extra prefabricated section on each side of the steel tapping holes, and adding two small slag-blocking dams to the overall slag-blocking wall. This effectively prevents slag entanglement in the tundish, improves billet quality, and has good performance, making it worthy of widespread application.

[0004] However, during the implementation of the relevant technology, the following problems were found in the above technical solution: When the two steel outlets are outputting, it is very easy to cause rapid turbulence of molten steel, which makes it difficult to reduce liquid surface fluctuations and eddies, resulting in slag entrapment in the finished product. Therefore, a slag-blocking wall for preventing slag entrapment in the tundish is proposed to solve the above problems. Utility Model Content

[0005] This utility model proposes a slag-blocking wall for preventing slag entrapment in a tundish, solving the problem in related technologies where, during use, the two steel outlets easily cause rapid turbulence of molten steel, making it difficult to reduce surface fluctuations and eddies, resulting in slag entrapment in the finished product.

[0006] The technical solution of this utility model is as follows: a slag-blocking wall for preventing slag entanglement in a middle package, comprising: a package body, a slag-blocking wall, an impact point, a baffle plate and a ceramic filter block, wherein the bottom of the package body is provided with multiple outflow holes, the impact point is located on one side of the package body, a connecting plate is fixedly connected to the outer wall of the slag-blocking wall, the connecting plate is fixedly connected to the inner wall of the package body, and the position of the slag-blocking wall corresponds to the impact point;

[0007] Multiple blocking covers are fixedly connected to the outer surface of the package. Multiple flow holes are opened on the outer wall of the blocking covers, and the blocking covers are located directly above the flow holes.

[0008] Preferably, the slag retaining wall includes a wall body, and the outer wall of the wall body has multiple molten steel flow holes.

[0009] Preferably, a baffle plate is fixedly connected to the inner wall of the package, and an inclined plate is fixedly connected to the inside of the package. The center of each molten steel flow hole is higher than the baffle plate, and the bottom of the baffle plate is 30% lower than the inclined plate itself.

[0010] Preferably, the ceramic filter block is fixedly connected to the inner wall of the package, and the ceramic filter block is located directly above the outflow hole.

[0011] Preferably, the diameter of the molten steel flow hole is the same as that of the flow hole.

[0012] Preferably, the top of the slag retaining wall has a notch, and the overall height of the slag retaining wall is the same as the height of the package.

[0013] The working principle and beneficial effects of this utility model are as follows:

[0014] 1. The multiple molten steel flow holes inside the slag retaining wall allow molten steel to enter the ladle more quickly and smoothly. The molten steel flow holes are set higher than the baffle plate so that the floating slag output can be blocked by the baffle plate first. The baffle plate and the inclined plate are set at different heights to make the flow of molten steel more stable, reduce the fluctuation of molten steel, reduce the generation of eddies, and reduce the occurrence of slag entrapment.

[0015] 2. By using ceramic filter blocks, a more thorough filtration is performed at the end, reducing the amount of steel slag and further preventing slag entrapment. Attached Figure Description

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 A cross-sectional three-dimensional structural diagram of the inclined plate is provided for this utility model;

[0019] Figure 3 A cross-sectional three-dimensional structural diagram of the barrier cover is provided for this utility model;

[0020] Figure 4 This is a top view of the structure proposed in this utility model.

[0021] In the diagram: 1. Package; 2. Slag retaining wall; 201. Wall; 202. Molten steel flow hole; 3. Impact point; 4. Connecting plate; 5. Baffle plate; 6. Inclined plate; 7. Baffle cover; 8. Flow hole; 9. Ceramic filter block; 10. Outlet hole. Detailed Implementation

[0022] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0023] Implementation

[0024] Please see Figure 1 -4, a slag-blocking wall for preventing slag entanglement in a slag-blocking package, comprising: a package body 1, a slag-blocking wall 2, an impact point 3, a baffle plate 5, and a ceramic filter block 9. The bottom of the package body 1 is provided with multiple outflow holes 10. The impact point 3 is located on one side of the package body 1. A connecting plate 4 is fixedly connected to the outer wall of the slag-blocking wall 2. The connecting plate 4 is fixedly connected to the inner wall of the package body 1. The position of the slag-blocking wall 2 corresponds to the impact point 3.

[0025] Multiple baffles 7 are fixedly connected to the outer surface of the package 1. Multiple flow holes 8 are opened on the outer wall of the baffles 7. The baffles 7 are located directly above the outflow holes 10.

[0026] The technical solution provided in this embodiment is as follows: Molten steel first flows into the impact point 3 and is blocked by the slag baffle 2 in the first step. Then, the molten steel flows into the ladle 1 through the molten steel flow hole 202, and the flow rate of the molten steel is slowed down by the molten steel flow hole 202. Then, the molten steel passes through the baffle 5 and the inclined plate 6. Since the inclined plate 6 is higher than the lowest point of the baffle 5, the water level of the molten steel will first submerge a part of the baffle 5, and then flow out after it is higher than the inclined plate 6. At this time, the baffle 5 will block the steel slag floating above the molten steel. After the molten steel flows through the inclined plate 6, it flows to the position of the baffle 7. The molten steel will slowly submerge the baffle 7. Due to the setting of the flow hole 8, excessive collection of substances on the surface of the molten steel is avoided. It is output from below the water level. After passing through the flow hole 8, it will pass through the ceramic filter screen 9 for the final step of filtration of the molten steel, and it can make the molten steel flow out more smoothly.

[0027] Furthermore, the slag retaining wall 2 includes a wall body 201, and the outer wall of the wall body 201 has multiple molten steel flow holes 202.

[0028] Specifically, the multiple molten steel flow holes 202 can quickly slow down the molten steel, avoid generating too much eddy current, and reduce surface fluctuations of the molten steel more quickly.

[0029] Furthermore, a baffle plate 5 is fixedly connected to the inner wall of the package 1, and an inclined plate 6 is fixedly connected inside the package 1. The center of the molten steel flow hole 202 is higher than the baffle plate 5, and the bottom of the baffle plate 5 is 30% lower than the inclined plate 6 itself.

[0030] Specifically, the setting of the molten steel flow hole 202 above the baffle plate 5 can minimize the output of scum floating on the surface, and together with the inclined plate 6, the baffle plate 5 can block most of the scum.

[0031] Furthermore, the ceramic filter block 9 is fixedly connected to the inner wall of the package 1, and the ceramic filter block 9 is located directly above the outlet hole 10.

[0032] Specifically, the ceramic filter block 9 can make the output molten steel purer, filter impurities in the final step, and reduce the flow rate of molten steel, thus reducing the occurrence of slag entrapment.

[0033] Furthermore, the diameter of the molten steel flow hole 202 is the same as that of the flow hole 8.

[0034] Specifically, having the same diameter ensures that the molten steel inside the ladle flows out quickly, preventing excessive molten steel inside and thus reducing production efficiency.

[0035] Furthermore, the top of the slag retaining wall 2 is provided with a notch, and the overall height of the slag retaining wall 2 is the same as the height of the package 1.

[0036] Specifically, the height of the slag retaining wall 2 needs to be high enough to ensure that the molten steel has enough time to stay in the ladle, which facilitates the floating of slag.

[0037] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A retaining wall for preventing slag entrapment in tundishes, comprising: The package (1), the slag-blocking wall (2), the impact point (3), the baffle plate (5) and the ceramic filter block (9) are characterized in that the bottom of the package (1) is provided with a plurality of outflow holes (10), the impact point (3) is located on one side of the package (1), the outer wall of the slag-blocking wall (2) is fixedly connected to a connecting plate (4), the connecting plate (4) is fixedly connected to the inner wall of the package (1), and the position of the slag-blocking wall (2) corresponds to the impact point (3); Multiple blocking covers (7) are fixedly connected to the outer surface of the package (1). Multiple flow holes (8) are opened on the outer wall of the blocking cover (7). The blocking cover (7) is located directly above the outflow hole (10).

2. The slag-blocking wall for preventing slag entrapment as described in claim 1, characterized in that: The slag retaining wall (2) includes a wall body (201), and the outer wall of the wall body (201) has a plurality of molten steel flow holes (202).

3. The slag-blocking wall for preventing slag entrapment as described in claim 2, characterized in that: The inner wall of the package (1) is fixedly connected to a baffle plate (5), and the inside of the package (1) is fixedly connected to an inclined plate (6). The center of the molten steel flow hole (202) is higher than the baffle plate (5), and the bottom of the baffle plate (5) is 30% lower than the inclined plate (6).

4. A retaining wall for preventing slag entrapment in a tundish according to claim 1, characterized in that: The ceramic filter block (9) is fixedly connected to the inner wall of the package (1), and the ceramic filter block (9) is located directly above the outlet hole (10).

5. A slag-blocking wall for preventing slag entrapment as described in claim 2, characterized in that: The diameter of the molten steel flow hole (202) is the same as that of the flow hole (8).

6. A retaining wall for preventing slag entrapment in a tundish according to claim 1, characterized in that: The top of the slag retaining wall (2) has a notch, and the overall height of the slag retaining wall (2) is the same as the height of the package (1).

Images