Continuous casting tundish with composite structure

Abstract

The utility model relates to the technical field of intermediate tanks, and discloses a continuous casting intermediate tank with a composite structure, which comprises a main body, a molten steel injection area, a molten steel pouring area, a slag blocking plate, a turbulence inhibiting piece, a water outlet and a hanging shaft, the main body is of an open T-shaped structure, and the molten steel injection area and the molten steel pouring area are arranged in the main body. A slag baffle is arranged between the molten steel injection area and the molten steel pouring area and is used for playing a role in separation, a turbulence inhibiting piece is arranged in the molten steel injection area, and water outlets are uniformly formed in the lower end of the molten steel pouring area; according to the utility model, through the design of the slag baffle, slag is effectively prevented from entering a pouring area, and the purity of molten steel is improved; the multi-stage groove body structure of the turbulence restraining piece remarkably restrains molten steel turbulence, and it is guaranteed that molten steel flows stably; the heat insulation design of the novel composite structure effectively reduces heat loss and keeps the temperature of molten steel stable.

Description

TECHNICAL FIELD

[0001] The utility model belongs to intermediate tank technical field, concretely is composite structure continuous casting intermediate tank. BACKGROUND

[0002] In the steel production process, the continuous casting intermediate tank plays a key role in transmitting molten steel from the steel furnace to the crystallizer. The traditional intermediate tank design often has problems such as unstable molten steel flow, slag mixing, and poor heat preservation effect, which affects the quality and production efficiency of the final product. Therefore, it is particularly important to develop a new type of composite structure continuous casting intermediate tank that can effectively solve the above problems. CONTENT OF THE UTILITY MODEL

[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a composite structure continuous casting intermediate tank, which effectively solves the problems raised in the above background.

[0004] In order to achieve the above purpose, the utility model provides the following technical scheme: a composite structure continuous casting intermediate tank, comprising a main body, a molten steel injection area, a molten steel pouring area, a slag baffle, a turbulence suppression element, a water outlet and a lifting shaft, the main body is arranged in an open T-shaped structure, the main body is internally provided with a molten steel injection area and a molten steel pouring area, a slag baffle is arranged between the molten steel injection area and the molten steel pouring area, the slag baffle is used for separation, the molten steel injection area is internally provided with a turbulence suppression element, and the molten steel pouring area is uniformly provided with a water outlet at the lower end.

[0005] The main body comprises an outer shell, an insulating layer is arranged on the inner side of the outer shell, a permanent layer is arranged on the inner side of the insulating layer, a heat insulation layer is arranged on the inner side of the permanent layer, and a working layer is arranged on the inner side of the heat insulation layer.

[0006] Preferably, the slag baffle comprises a middle plate, first inclined plates are connected to both sides of the middle plate, second inclined plates are connected to one side of the two first inclined plates, and through holes are formed in the surfaces of the middle plate, the first inclined plates and the second inclined plates.

[0007] Preferably, the through holes are arranged in an inclined manner, and the inclination of the through holes is higher on the side close to the molten steel injection area than on the side close to the molten steel pouring area.

[0008] Preferably, the turbulence suppression element comprises a column body, and the column body is internally provided with an upper column-shaped groove, an upper inclined surface groove, an arc surface groove, a lower inclined surface groove and a lower column-shaped groove from top to bottom.

[0009] Preferably, the front and rear sides of the main body are connected with lifting shafts.

[0010] Preferably, the insulating layer is made of asbestos board, the permanent layer is made of clay brick, the heat insulation layer is made of aluminum silicate fiber, and the working layer is made of high-aluminum brick.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] 1、 The utility model discloses, through the design of the slag baffle, effectively prevent the dregs from entering the pouring area, improve the purity of molten steel;

[0013] 2、 The novel through the multistage groove structure of turbulence suppression piece significantly suppresses molten steel turbulence, guarantees that molten steel flows stably;

[0014] 3、 The heat preservation design of the novel composite structure effectively reduces heat loss and maintains the stability of molten steel temperature. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings are included to provide a further understanding of the utility model, and constitute a part of the specification, and are used to explain the utility model together with embodiments of the utility model, and do not constitute the limitation on the utility model.

[0016] In the drawings:

[0017] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0018] Figure 2 It is the plan view of the utility model;

[0019] Figure 3 It is the structure schematic diagram of the slag baffle of the utility model;

[0020] Figure 4 It is the sectional structure schematic diagram of the turbulence suppression piece of the utility model;

[0021] Figure 5 It is the structure schematic diagram of the main body of the utility model;

[0022] In the drawing: 1, main body;101, shell;102, heat preservation layer;103, permanent layer;104, heat insulation layer, 105, working layer;2, molten steel injection area;3, molten steel pouring area;4, slag baffle;401, middle plate;402, first inclined plate;403, second inclined plate;404, through hole;5, turbulence suppression piece;501, cylinder;502, upper cylindrical groove;503, upper inclined surface groove;504, arc surface groove;505, lower inclined surface groove;506, lower cylindrical groove;6, water outlet;7, hanging shaft. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments;Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor are within the protection scope of the utility model.

[0024] Example one, by Figures 1-5 The utility model discloses a body 1, molten steel injection area 2, molten steel pouring area 3, slag dam 4, suppress turbulence piece 5, water outlet 6 and hanging shaft 7, body 1 is set up and presents the open T type structure, and body 1 inside is equipped with molten steel injection area 2 and molten steel pouring area 3, and molten steel injection area 2 and molten steel pouring area 3 are equipped with slag dam 4 between, and slag dam 4 is used to play the separating effect, and molten steel injection area 2 inside is equipped with suppress turbulence piece 5, and the lower end of molten steel pouring area 3 is evenly provided with water outlet 6;

[0025] Body 1 includes shell 101, the inside of shell 101 is equipped with insulating layer 102, the inside of insulating layer 102 is equipped with permanent layer 103, the inside of permanent layer 103 is equipped with heat insulation layer 104, and the inside of heat insulation layer 104 is equipped with working layer 105.

[0026] Slag dam 4 includes middle plate 401, and both sides of middle plate 401 are connected with first inclined plate 402, and the side of two first inclined plates 402 is connected with second inclined plate 403, and the surface of middle plate 401, first inclined plate 402 and second inclined plate 403 is provided with through hole 404, which promotes the flow of molten steel while blocking the dregs.

[0027] Through hole 404 is inclined, and the inclination of through hole 404 is higher on the side close to molten steel injection area 2 than on the side close to molten steel pouring area 3.

[0028] Suppress turbulence piece 5 includes column body 501, and the inside of column body 501 is sequentially provided with upper column-shaped groove 502, upper inclined surface groove 503, arc surface groove 504, lower inclined surface groove 505 and lower column-shaped groove 506 from top to bottom, and the setting of multi-stage groove body structure is used to slow down and disperse the impact force of molten steel and suppress turbulence.

[0029] The front and back of body 1 are connected with hanging shaft 7, which is convenient for hoisting and moving the intermediate tank.

[0030] The insulating layer 102 is made of asbestos board, the permanent layer 103 is made of clay brick, the heat insulation layer 104 is made of aluminum silicate fiber, and the working layer 105 is made of high-aluminum brick.

[0031] Working principle:

[0032] Molten steel injection and stable transmission:

[0033] The molten steel in the steel furnace is injected into the molten steel injection area 2 of the intermediate tank through a specific device (such as a ladle long nozzle), and the design of this area allows the molten steel to enter at a certain speed and flow rate, laying the foundation for subsequent smooth flow.

[0034] When the molten steel enters the molten steel injection area 2, it will encounter the turbulence suppression piece 5, which is composed of multiple stage tank structures, including an upper cylindrical tank 502, an upper inclined tank 503, an arc surface tank 504, a lower inclined tank 505, and a lower cylindrical tank 506. These tank structures can slow down the impact force of the molten steel and suppress the formation of turbulence by dispersing and redirecting the flow of the molten steel. The molten steel falling into the turbulence suppression piece 5 is then reversed and flows out of the turbulence suppression piece 5. After passing through the slag blocking plate 4 from the molten steel injection area 2, the molten steel enters the molten steel pouring area 3. In this way, the molten steel can flow to the molten steel pouring area 3 in a more stable state.

[0035] Slag blocking and molten steel purification:

[0036] Between the molten steel injection area 2 and the molten steel pouring area 3, a slag blocking plate 4 is provided. The slag blocking plate 4 is composed of a middle plate 401, a first inclined plate 402, and a second inclined plate 403. These plate members are all provided with inclined through holes 404. The design of the through holes 404 allows the molten steel to pass through, but blocks larger slag particles. Due to the inclination of the through holes 404, the side closer to the molten steel injection area 2 is higher than the side closer to the molten steel pouring area 3. Therefore, slag particles are more easily blocked above the slag blocking plate 4 under the action of gravity and flow, thereby achieving purification of the molten steel.

[0037] Uniform molten steel pouring and heat retention:

[0038] After purification by the slag blocking plate 4, the molten steel enters the molten steel pouring area 3. The design of this area ensures that the molten steel can be uniformly distributed and poured into the crystallizer through the lower water outlet 6 at a stable flow rate and speed.

[0039] The main body 1 of the tundish adopts a composite structure design, including an outer shell 101, a thermal insulation layer 102, a permanent layer 103, a heat insulation layer 104, and a working layer 105. These layered structures work together to effectively reduce heat loss and maintain the temperature stability of the molten steel during pouring. The thermal insulation layer 102 is made of asbestos board, providing preliminary heat insulation effect. The permanent layer 103 is constructed using clay bricks, increasing structural stability and service life. The heat insulation layer 104 is made of aluminum silicate fiber, further enhancing thermal insulation performance. The working layer 105 is made of high alumina brick, which is resistant to high temperature and corrosion, and directly contacts the molten steel.

[0040] In order to facilitate the lifting and movement of the tundish, hoisting shafts 7 are provided on the front and rear sides of the main body 1. This not only improves the convenience of operation, but also ensures the stability and safety of the tundish during continuous casting.

[0041] In summary, the composite structure continuous casting tundish realizes stable transmission of molten steel, effective blocking of slag, and good retention of heat through its unique design and working principle, providing high-quality and efficient molten steel supply for continuous casting production.

Claims

1. A composite structure continuous casting tundish comprising a main body (1), a molten steel injection area (2), a molten steel pouring area (3), a slag dam (4), a turbulence suppressing member (5), a water outlet (6) and a hoisting shaft (7), characterized in that: The main body (1) is provided in an open T-shaped structure, and the main body (1) is internally provided with a molten steel injection area (2) and a molten steel pouring area (3), and a slag dam (4) is arranged between the molten steel injection area (2) and the molten steel pouring area (3), the slag dam (4) is used for separation, the molten steel injection area (2) is internally provided with a turbulence suppression piece (5), and the molten steel pouring area (3) is uniformly provided with a water outlet (6) at the lower end. The main body (1) comprises an outer shell (101), the inner side of the outer shell (101) is provided with a heat preservation layer (102), the inner side of the heat preservation layer (102) is provided with a permanent layer (103), the inner side of the permanent layer (103) is provided with a heat insulation layer (104), and the inner side of the heat insulation layer (104) is provided with a working layer (105).

2. The composite structural continuous-casting tundish according to claim 1, characterized in that: The slag dam (4) comprises a middle plate (401), the two side ends of the middle plate (401) are connected with first inclined plates (402), one side of the two first inclined plates (402) is connected with a second inclined plate (403), and the surfaces of the middle plate (401), the first inclined plates (402) and the second inclined plate (403) are provided with through holes (404).

3. The composite structural continuous-casting tundish according to claim 2, characterized in that: The through hole (404) is arranged in an inclined manner, and the inclination of the through hole (404) is higher on the side close to the molten steel injection area (2) than on the side close to the molten steel pouring area (3).

4. The composite structural continuous-casting tundish according to claim 1, characterized in that: The turbulence suppression piece (5) comprises a column body (501), and the column body (501) is internally provided with, from top to bottom, an upper column-shaped groove (502), an upper inclined surface groove (503), an arc surface groove (504), a lower inclined surface groove (505) and a lower column-shaped groove (506).

5. The composite structural continuous-casting tundish according to claim 1, characterized in that: The front and rear sides of the main body (1) are connected with hanging shafts (7).

6. The composite structural continuous-casting tundish according to claim 1, characterized in that: The heat preservation layer (102) is made of stone wool board material, the permanent layer (103) is made of clay brick material, the heat insulation layer (104) is made of aluminum silicate fiber material, and the working layer (105) is made of high-aluminum brick material.

Images