Tundish and continuous casting system

Abstract

The application discloses a tundish and a continuous casting system. The tundish comprises a tundish body, a turbulent flow inhibitor arranged at the bottom of the tundish body and below a long nozzle of the tundish body, and the turbulent flow inhibitor is a hollow polyhedron with an open top edge, and is used for reducing the flow speed of molten steel flowing out of the long nozzle. The application solves the technical problem of low cleanliness of the molten steel.

Description

Technical Field

[0001] This invention belongs to the field of continuous steel casting technology, and particularly relates to an intermediate ladle and a continuous casting system. Background Technology

[0002] Tundish metallurgy is a special ladle refining technology, a crucial step in the production process from steel smelting and refining to the production of solid continuously cast billets, ensuring the acquisition of high-quality steel. In the early stages of continuous casting technology, the tundish was simply used as a storage and distribution vessel for molten steel. With the development of continuous casting technology, the importance of molten steel quality to the continuous casting process has become increasingly recognized, and the refining function of the tundish has received increasing attention from metallurgists. Its important roles, such as further removing inclusions and preventing secondary contamination of the molten steel, have become increasingly important. To ensure smooth continuous casting and multiple heats of continuous casting, the molten steel must have sufficient cleanliness, its composition must be controlled as precisely as possible to achieve homogenization, and its temperature must remain stable for a sufficiently long period. Therefore, as the last refractory vessel in the steel smelting process, the metallurgical role of the tundish has received increasing attention.

[0003] When molten steel flows into the tundish from the long nozzle, the velocity gradient of the molten steel in the pouring zone is extremely large. The high-velocity molten steel, upon reaching the bottom of the tundish, reflects directly onto the surface of the molten steel and the nearby tundish walls, causing severe turbulence on the molten steel surface. Some of the tundish covering agent is entrained into the molten steel, forming inclusions. Simultaneously, air is easily entrained, leading to secondary oxidation, resulting in low cleanliness of the molten steel and affecting the quality of subsequently produced products. Therefore, low cleanliness of molten steel is a technical problem that urgently needs to be solved. Summary of the Invention

[0004] This invention provides a tundish and a continuous casting system that solves the technical problem of low cleanliness of molten steel.

[0005] In a first aspect, embodiments of the present invention provide a tundish, comprising: a tundish body; and a turbulence suppressor disposed at the bottom of the tundish body and located below the long nozzle of the tundish body, wherein the turbulence suppressor is a hollow polyhedron with an opening at the top and a rim, for reducing the flow velocity of molten steel flowing out from the long nozzle.

[0006] In conjunction with the first aspect of the invention, in some embodiments, the turbulence suppressor includes: a base; a sidewall, one end of which is connected to an edge of the base and extends upward toward the base; and an upper edge, one end of which is connected to the other end of the sidewall and extends toward the interior of the turbulence suppressor.

[0007] In conjunction with the first aspect of the present invention, in some embodiments, the sidewall is provided with a hole, the extension direction of which is parallel to the base.

[0008] In conjunction with the first aspect of the present invention, in some embodiments, a hole is provided on the side wall, and the angle between the extension direction of the hole and the base is within a preset first angle range.

[0009] In conjunction with the first aspect of the present invention, in some embodiments, the sidewall includes: a first part sidewall and a second part sidewall; wherein the inward extension length of the upper edge at the first part sidewall is greater than the inward extension length at the second part sidewall, and the distance between the first part sidewall and the outlet of the tundish body is less than the distance between the second part sidewall and the outlet of the tundish body.

[0010] In conjunction with the first aspect of the invention, in some embodiments, the number of holes in each sidewall of the first portion of the sidewall is less than the number of holes in each sidewall of the second portion of the sidewall.

[0011] In conjunction with the first aspect of the present invention, in some embodiments, the tundish body includes: a first steel outlet and a second steel outlet respectively disposed on both sides of the bottom of the tundish body, the tundish body having a cuboid shape, and the first steel outlet and the second steel outlet being located in the vicinity of both ends of the longer side of the tundish body.

[0012] In conjunction with the first aspect of the present invention, in some embodiments, the turbulence suppressor is octagonal prism in shape, the first portion of the sidewalls includes a first sub-sidewall, a second sub-sidewall, a third sub-sidewall, a fourth sub-sidewall, a fifth sub-sidewall, and a sixth sub-sidewall, the second portion of the sidewalls includes a seventh sub-sidewall and an eighth sub-sidewall opposite to the seventh sub-sidewall, each sidewall in the first portion of the sidewalls has the same length, each sidewall in the second portion of the sidewalls has the same length, and the length of each sidewall in the first portion of the sidewalls is less than the length of each sidewall in the second portion of the sidewalls; each sidewall in the second portion of the sidewalls is parallel to the longer side of the intermediate bag body.

[0013] In conjunction with the first aspect of the present invention, in some embodiments, a cuboid hole is provided on the first sub-sidewall, the second sub-sidewall, the third sub-sidewall, the fourth sub-sidewall, the fifth sub-sidewall, and the sixth sub-sidewall, and two cuboid holes are provided on the seventh sub-sidewall and the eighth sub-sidewall. The length of the cuboid hole is 0.05m to 0.15m, and the width is 0.02m to 0.05m.

[0014] Secondly, embodiments of the present invention provide a continuous casting system including the tundish described in any one of the first aspects.

[0015] The one or more technical solutions provided in the embodiments of the present invention achieve at least the following technical effects or advantages:

[0016] The tundish provided in this embodiment of the invention includes: a tundish body; and a turbulence suppressor disposed at the bottom of the tundish body and below the long nozzle. The turbulence suppressor is a hollow polyhedron with an open top edge, used to reduce the flow velocity of the molten steel flowing out from the long nozzle. When the molten steel flows into the tundish from the long nozzle, it flows into the interior of the turbulence suppressor. Due to the open top edge of the turbulence suppressor, it effectively suppresses the reflection of molten steel after colliding with it towards the surface of the molten steel and the nearby tundish wall, and reduces the flow velocity of the molten steel. This avoids severe disturbance on the surface of the molten steel in the tundish, thereby preventing some of the tundish covering agent from being entrained into the molten steel and forming inclusions, and preventing secondary oxidation caused by air entrainment. Therefore, the cleanliness of the molten steel is improved. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the intermediate package in an embodiment of the present invention;

[0019] Figure 2 This is a global schematic diagram of the turbulence suppressor in an embodiment of the present invention;

[0020] Figure 3 This is a cross-sectional schematic diagram of the turbulence suppressor in an embodiment of the present invention;

[0021] Figure 4 A comparison chart of the RTD curves of molten steel corresponding to existing turbulence suppressors and the turbulence suppressors of this invention embodiment;

[0022] Figure 5 This is a comparison chart of the inclusion removal rates of existing turbulence suppressors and the turbulence suppressors of this invention. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0024] In this invention, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Furthermore, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0025] Figure 1 This is a schematic diagram of the intermediate package in an embodiment of the present invention. (Reference) Figure 1 As shown in the figure, an embodiment of the present invention provides a tundish, including: a tundish body 10; and a turbulence suppressor 20, which is disposed at the bottom of the tundish body 10 and located below the long nozzle 110 of the tundish body 10. The turbulence suppressor 20 is a polyhedron with a hollow interior and an open top edge, used to reduce the flow velocity of the molten steel flowing out from the long nozzle 110.

[0026] refer to Figure 2 and Figure 3 As shown, Figure 2 This is a global schematic diagram of the turbulence suppressor 20 in an embodiment of the present invention. Figure 3 This is a cross-sectional schematic diagram of the turbulence suppressor 20 in an embodiment of the present invention.

[0027] In some embodiments, the turbulence suppressor 20 may include: a base 210; a sidewall 220, one end of which is connected to the edge of the base 210 and extends upward toward the base 210; and an upper edge 230, one end of which is connected to the other end of the sidewall 220 and extends toward the interior of the turbulence suppressor 20.

[0028] It should be noted that the base 210, side wall 220 and upper edge 230 can be made of refractory materials.

[0029] It should be noted that the angle between the base 210 and the side wall 220 is the first included angle, which can be between 0 and 180 degrees, for example, 90 degrees. The angle between the upper edge 230 and the side wall 220 is the second included angle, which can also be between 0 and 180 degrees, for example, 90 degrees. The positional relationship between the upper edge 230 and the base 210 can be parallel or non-parallel, and the angle between the upper edge 230 and the base 210 can be within a preset second angle range, which can be between 0 and 90 degrees.

[0030] It should be noted that during the process of molten steel flowing into the tundish, the molten steel first flows out from the long nozzle 110, and then enters the interior of the turbulence suppressor 20 through the top opening at the upper edge 230. After colliding with the base 210 of the turbulence suppressor 20, the molten steel is reflected upwards. Most of the upwardly reflected molten steel is blocked by the upper edge 230, thus reducing the flow velocity of the molten steel flowing out from the long nozzle 110. This effectively suppresses the molten steel from flowing directly onto the surface of the molten steel in the tundish, avoiding severe disturbance to the surface of the molten steel in the tundish. This, in turn, prevents some of the tundish covering agent from being entrained into the molten steel and forming inclusions, and also prevents secondary oxidation caused by air entrainment. Therefore, the cleanliness of the molten steel is improved.

[0031] It should also be noted that after the molten steel collides with the base 210 of the turbulence suppressor 20, it is reflected upwards. Most of the upwardly reflected molten steel is blocked by the upper edge 230, effectively preventing the molten steel from flowing directly towards the nearby wall of the tundish. Since the upper edge 230 can effectively prevent the molten steel from flowing directly towards the nearby wall of the tundish, damage to the wall is avoided, thus extending the service life of the tundish. Similarly, since the turbulence suppressor 20 is installed at the bottom of the tundish body 10, the molten steel flowing out from the long nozzle 110 will not directly contact the bottom of the tundish body 10, but will directly contact the base 210 of the turbulence suppressor 20. Therefore, the molten steel is prevented from scouring the bottom of the tundish body 10, thereby preventing damage to the refractory material at the bottom of the tundish body 10, extending the service life of the refractory material at the bottom of the tundish body 10, and thus extending the service life of the tundish.

[0032] In some embodiments, the sidewall 220 is provided with holes, the extension direction of which is parallel to the base 210.

[0033] In other embodiments, the sidewall 220 is provided with holes, and the angle between the extension direction of the holes and the base 210 is within a preset first angle range.

[0034] It should be noted that the first angle range can be 0 degrees to 90 degrees, such as 45 degrees. This first angle range allows the molten steel flowing from the holes in the side wall 220 to flow towards the surface of the molten steel in the tundish. This prevents the molten steel from flowing towards the bottom of the tundish body 10, thus avoiding erosion of the bottom refractory material and extending its service life. Alternatively, the first angle range can also allow the molten steel flowing from the holes in the side wall 220 to flow towards the bottom of the tundish body 10. After colliding with the bottom of the tundish body 10, the flow velocity of the molten steel is further reduced, effectively inhibiting direct flow towards the surface of the molten steel in the tundish. This avoids severe disturbance to the surface of the molten steel in the tundish, preventing some of the tundish covering agent from being entrained into the molten steel and forming inclusions, and preventing secondary oxidation caused by air entrainment. Therefore, the cleanliness of the molten steel is improved.

[0035] In some embodiments, the sidewall 220 may include: a first part sidewall and a second part sidewall; wherein, the inward extension length of the upper edge 230 at the first part sidewall is greater than the inward extension length at the second part sidewall, and the distance between the first part sidewall and the steel outlet of the tundish body 10 is less than the distance between the second part sidewall and the steel outlet of the tundish body 10.

[0036] It should be noted that when the tundish body 10 has multiple outlets, the distance between the first part of the side wall and the outlet of the tundish body 10 refers to the minimum distance between the first part of the side wall and the outlet of the tundish body 10, and the distance between the second part of the side wall and the outlet of the tundish body 10 refers to the minimum distance between the second part of the side wall and the outlet of the tundish body 10.

[0037] It should be noted that the upper edge 230 effectively inhibits the flow of molten steel. Since the inward extension length of the upper edge 230 at the first part of the sidewall is greater than that at the second part of the sidewall, the flow rate of molten steel towards the side containing the first part of the sidewall is less than the flow rate towards the side containing the second part of the sidewall. That is, most of the molten steel flowing out of the long nozzle 110 will flow towards the side containing the second part of the sidewall. Furthermore, because the distance between the first part of the sidewall and the outlet of the tundish body 10 is less than the distance between the second part of the sidewall and the outlet of the tundish body 10, most of the molten steel flowing out of the long nozzle 110 will not directly pass through the side containing the first part of the sidewall and then flow directly to the outlet. Instead, it will pass through the side containing the second part of the sidewall and then flow towards the outlet. This increases the residence time of the molten steel inside the tundish, allowing sufficient time for inclusions in the molten steel to float and be removed, thus improving the cleanliness of the molten steel.

[0038] In some implementations, the number of holes in each sidewall of the first portion of the sidewall is less than the number of holes in each sidewall of the second portion of the sidewall.

[0039] For example, if the number of holes in each sidewall of the second part is 2, then the number of holes in each sidewall of the first part can be 1 or 0; if the number of holes in each sidewall of the second part is 3, then the number of holes in each sidewall of the first part can be 1 or 2; if the number of holes in each sidewall of the second part is 4, then the number of holes in each sidewall of the first part can be 1, 2, or 3; if the number of holes in each sidewall of the second part is 5, then the number of holes in each sidewall of the first part can be 1, 2, 3, or 4; if the number of holes in each sidewall of the second part is 6, then the number of holes in each sidewall of the first part can be 1, 2, 3, 4, or 5; if the number of holes in each sidewall of the second part is 10, then the number of holes in each sidewall of the first part can be 1, 4, 6, 7, or 9, and so on.

[0040] It should be noted that, since the number of holes in each sidewall of the first part is less than the number of holes in each sidewall of the second part, the flow rate of molten steel through the holes in each sidewall of the first part is less than the flow rate of molten steel through the holes in each sidewall of the second part. Therefore, most of the molten steel flowing out from the long nozzle 110 will not directly pass through the side where the first part of the sidewall is located and then flow directly to the outlet. Instead, it will pass through the side where the second part of the sidewall is located and then flow to the outlet. This increases the residence time of the molten steel inside the tundish, allowing the inclusions in the molten steel sufficient time to float to the surface for removal, thus improving the cleanliness of the molten steel.

[0041] In some implementations, the diameter of the hole in each sidewall of the first portion of the sidewall is smaller than the diameter of the hole in each sidewall of the second portion of the sidewall.

[0042] For example, if the diameter of the hole in each sidewall of the second part is 0.05m, then the number of holes in each sidewall of the first part can be 0.01m or 0.02m, etc.; if the diameter of the hole in each sidewall of the second part is 0.06m, then the number of holes in each sidewall of the first part can be 0.03m or 0.05m, etc.; if the diameter of the hole in each sidewall of the second part is 0.07m, then the number of holes in each sidewall of the first part can be 0.01m or 0.06m, etc.; if the diameter of the hole in each sidewall of the second part is 0.08m, then the number of holes in each sidewall of the first part can be 0.05m or 0.07m, etc.

[0043] It should be noted that, since the diameter of the holes in each sidewall of the first part is smaller than that in each sidewall of the second part, the flow rate of molten steel through the holes in each sidewall of the first part is smaller than that through the holes in each sidewall of the second part. Therefore, most of the molten steel flowing out from the long nozzle 110 will not directly pass through the side where the first part of the sidewall is located and then flow directly to the outlet. Instead, it will pass through the side where the second part of the sidewall is located and then flow to the outlet. This increases the residence time of the molten steel inside the tundish, allowing the inclusions in the molten steel sufficient time to float to the surface for removal, thus improving the cleanliness of the molten steel.

[0044] In some implementations a, reference is made to Figure 1 As shown, the tundish body 10 may include a first steel outlet 120 and a second steel outlet 130 respectively disposed on both sides of the bottom of the tundish body 10. The tundish body 10 is rectangular in shape, and the first steel outlet 120 and the second steel outlet 130 are located in the vicinity of the two ends of the longer side of the tundish body 10.

[0045] It should be noted that the number of steel outlets on the tundish body 10 can be set according to actual needs, such as 1, 2, or 3, etc.

[0046] In some implementations b, reference is made to Figure 2 and Figure 3 As shown, the turbulence suppressor 20 is an octagonal prism. The first part of the sidewalls includes a first sub-sidewall, a second sub-sidewall, a third sub-sidewall, a fourth sub-sidewall, a fifth sub-sidewall, and a sixth sub-sidewall. The second part of the sidewalls includes a seventh sub-sidewall and an eighth sub-sidewall opposite to the seventh sub-sidewall. Each sidewall in the first part of the sidewalls has the same length, and each sidewall in the second part of the sidewalls has the same length. The length of each sidewall in the first part of the sidewalls is less than the length of each sidewall in the second part of the sidewalls. Each sidewall in the second part of the sidewalls is parallel to the longer side of the intermediate package body 10.

[0047] In some implementations c, the included angle between the faces of the octagonal prism can be 135 degrees, and the length of each sidewall in the second part of the sidewall can be twice the length of each sidewall in the first part of the sidewall.

[0048] In some implementations d, a cuboid hole is provided on the first sub-sidewall, the second sub-sidewall, the third sub-sidewall, the fourth sub-sidewall, the fifth sub-sidewall, and the sixth sub-sidewall, and two cuboid holes are provided on the seventh sub-sidewall and the eighth sub-sidewall. The length of the cuboid hole is 0.05m to 0.15m and the width is 0.02m to 0.05m.

[0049] It should be noted that different tundish bodies 10 require different turbulence suppressors 20 to more effectively improve the cleanliness of the molten steel, reduce inclusions, and lower turbulent kinetic energy. Through multiple experiments, the tundish body 10 and turbulence suppressor 20 corresponding to the above-mentioned implementation methods a, b, c, and d can be selected. The specific description is as follows: A 60t two-strand slab continuous casting tundish was used to cast 1500mm×230mm slabs. The cast steel grade was ultra-low carbon LF steel. After the experiment, the results are shown in Table 1 below. Table 1 shows the characteristic parameters of the molten steel RTD (Residence Time Distribution) curve and other parameters. Among them, scheme T1 is a tundish with an existing turbulence suppressor 20, and T2 is a tundish with the turbulence suppressor 20 of the present invention. min t is the dwell time of the piston flow. max For peak time, t a V represents the actual average stay time. p V represents the volume fraction of the piston region. d V is the dead zone volume fraction. m This represents the volume fraction of the mixing region. Additionally, refer to... Figure 4 As shown, Figure 4 This is a comparison chart of the RTD curves of molten steel corresponding to the existing turbulence suppressor 20 and the turbulence suppressor 20 of this embodiment. Regarding turbulent kinetic energy, the turbulent kinetic energy corresponding to the existing turbulence suppressor 20 is 9.36 × 10⁻⁶. -4 m 2 ·s -2 The turbulence suppressor 20 in this embodiment of the invention corresponds to a turbulence kinetic energy of 8.99 × 10⁻⁶. -4 m 2 ·s -2 Regarding the slag mass, the existing turbulence suppressor 20 weighs 22.3 kg, while the turbulence suppressor 20 of this embodiment weighs 21.1 kg. Regarding the inclusion removal rate, refer to... Figure 5 , Figure 5 This is a comparison chart of the inclusion removal rates of the existing turbulence suppressor 20 and the turbulence suppressor 20 of this embodiment. The turbulence suppressor 20 provided by this embodiment achieves a 3.98% reduction in turbulent kinetic energy of molten steel, a 5.38% reduction in slag mass, and a 15% improvement in the removal capacity of inclusions larger than 150 μm.

[0050] Table 1:

[0051]

[0052] It should be noted that when molten steel flows into the tundish from the long nozzle 110, the velocity gradient of the molten steel in the pouring zone is very large. The high-velocity molten steel, after reaching the bottom of the tundish, flows directly towards the surface and nearby walls, causing severe surface disturbance. Some of the tundish covering agent is entrained into the molten steel, forming impurities. Simultaneously, air is easily entrained, leading to secondary oxidation, and the impact on the ladle bottom causes excessive erosion of the refractory material. These factors significantly affect the flow pattern of the molten steel in the tundish and the loss of refractory material. To address these problems, the embodiments of this invention can effectively reduce the velocity of the molten steel in the pouring zone of the tundish, weaken the intensity of the reflected flow generated by the impact of the steel flow on the ladle bottom, thereby reducing surface turbulence, slag emulsification, and erosion of the refractory material. Simultaneously, the turbulence controller can effectively control the turbulent kinetic energy of the molten steel in the tundish during pouring, ladle changing, and other unsteady-state processes, ensuring that the billet casting speed remains constant during ladle changes. This significantly improves the tundish's ability to remove inclusions and enhances the quality of the cast billet, especially the first billet.

[0053] The tundish provided in this embodiment of the invention includes: a tundish body 10; and a turbulence suppressor 20, disposed at the bottom of the tundish body 10 and below the long nozzle 110 of the tundish body 10. The turbulence suppressor 20 is a hollow polyhedron with an open top edge, used to reduce the flow velocity of the molten steel flowing out from the long nozzle 110. When the molten steel flows into the tundish from the long nozzle 110, it flows into the interior of the turbulence suppressor 20. Due to the open top edge of the turbulence suppressor 20, it can effectively suppress the reflection of molten steel after colliding with the turbulence suppressor 20 towards the surface of the molten steel and the nearby tundish wall, and can reduce the flow velocity of the molten steel. Therefore, it avoids severe disturbance on the surface of the molten steel in the tundish, thereby preventing some of the tundish covering agent from being entrained into the molten steel and forming inclusions, and preventing secondary oxidation caused by air entrainment. Therefore, the cleanliness of the molten steel is improved.

[0054] Based on the same inventive concept, embodiments of the present invention provide a continuous casting system, including an intermediate ladle of any of the above embodiments.

[0055] It should be understood that further implementation details of the continuous casting system in the embodiments of the present invention are described in the foregoing intermediate package description, and will not be repeated here for the sake of brevity.

[0056] The above description is merely an embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of the claims of the present invention.

Claims

1. An intermediate package, characterized in that, include: The middleware body; A turbulence suppressor is disposed at the bottom of the tundish body and below the long nozzle of the tundish body. The turbulence suppressor is a polyhedron with a hollow interior and an open top edge, used to reduce the flow velocity of the molten steel flowing out from the long nozzle. The turbulence suppressor includes: a base; a sidewall, one end of which is connected to the edge of the base and extends upward toward the base; an upper edge, one end of which is connected to the other end of the sidewall and extends inward toward the interior of the turbulence suppressor; the sidewall has holes, and the angle between the extension direction of the holes and the base is within a preset first angle range; the sidewall includes: a first part of the sidewall and a second part of the sidewall; wherein, the inward extension length of the upper edge at the first part of the sidewall is greater than the inward extension length at the second part of the sidewall, and the distance between the first part of the sidewall and the outlet of the tundish body is less than the distance between the second part of the sidewall and the outlet of the tundish body.

2. The intermediate package according to claim 1, characterized in that, The side wall is provided with holes, and the extension direction of the holes is parallel to the base.

3. The intermediate package according to claim 1, characterized in that, The number of holes in each sidewall of the first part is less than the number of holes in each sidewall of the second part.

4. The intermediate package according to claim 1, characterized in that, The intermediate package body includes: A first steel outlet and a second steel outlet are respectively provided on both sides of the bottom of the intermediate ladle body. The intermediate ladle body is rectangular in shape, and the first steel outlet and the second steel outlet are located in the vicinity of the two ends of the longer side of the intermediate ladle body.

5. The intermediate package according to claim 4, characterized in that, The turbulence suppressor is octagonal prism in shape. The first part of the sidewalls includes a first sub-sidewall, a second sub-sidewall, a third sub-sidewall, a fourth sub-sidewall, a fifth sub-sidewall, and a sixth sub-sidewall. The second part of the sidewalls includes a seventh sub-sidewall and an eighth sub-sidewall opposite to the seventh sub-sidewall. Each sidewall in the first part of the sidewalls has the same length, and each sidewall in the second part of the sidewalls has the same length. The length of each sidewall in the first part of the sidewalls is less than the length of each sidewall in the second part of the sidewalls. Each sidewall in the second section is parallel to the longer side of the intermediate package body.

6. The intermediate package according to claim 5, characterized in that, A cuboid hole is provided on each of the first, second, third, fourth, fifth, and sixth sub-sidewalls, and two cuboid holes are provided on each of the seventh and eighth sub-sidewalls. The length of each cuboid hole is 0.05m to 0.15m and the width is 0.02m to 0.05m.

7. A continuous casting system, characterized in that, Includes the intermediate package as described in any one of claims 1-6.

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