Slag blocking wall with filtering function

Abstract

The utility model relates to the technical field of slag blocking walls, and provides a slag blocking wall with a filtering function, which comprises a first wall body, the two second wall bodies are arranged on the two sides of the first wall body, the first wall body and the second wall bodies form a trapezoid, a plurality of through holes are formed in the first wall body and the second wall bodies, and the through holes are used for molten steel circulation; the multiple filtering pieces are arranged in the through holes, and the multiple filtering nets are used for filtering molten steel flowing through the through holes. By means of the technical scheme, the problems that in the prior art, a slag blocking wall only has the blocking function, and steel slag still flows out of the overflowing holes are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a slag retaining wall technical field, specifically, relate to a kind of slag retaining wall with filtering effect. BACKGROUND

[0002] Slag retaining wall is an indispensable slag retaining device in continuous casting tundish, which can effectively isolate ladle pouring area and tundish pouring area to prevent steel slag from flowing to pouring area. It has the following functions: appropriately prolonging the residence time of molten steel in tundish, allowing inclusions in molten steel to collide, aggregate and float sufficiently to purify molten steel; making the time of steel flow reaching each flow tundish nozzle basically the same to uniform the temperature of each flow and reduce the phenomenon of leakage and plugging; changing the flow field distribution of tundish to make the hydrodynamic state of molten steel reach the best; reducing stagnant flow area and increasing laminar flow area. Various enterprises design various slag retaining walls according to their different needs.

[0003] The existing slag retaining wall usually only plays a blocking role, and part of the steel slag still flows out through the flow hole on the slag retaining wall, affecting the quality of the product. CONTENT OF UTILITY MODEL

[0004] The utility model provides a kind of slag retaining wall with filtering effect, solve the problem that steel slag still flows out from flow hole in the blocking role of slag retaining wall in the related art.

[0005] The technical scheme of the utility model is as follows:

[0006] A kind of slag retaining wall with filtering effect, comprising:

[0007] First wall body;

[0008] Second wall body, has two, is arranged at the two sides of the first wall body, the first wall body and the second wall body between having included angle, the first wall body and the second wall body on having several through holes, the through hole is used to make molten steel flow through;

[0009] Filtering element, has several, is arranged in the through hole, several filtering elements are used to filter molten steel flowing through the through hole.

[0010] As further technical scheme, further comprising:

[0011] First shunt block, has two, is arranged at the junction of the first wall body and the second wall body, the first shunt block is arc-shaped.

[0012] As further technical scheme, further comprising:

[0013] A second flow dividing block is detachably arranged on the first wall body, and the second flow dividing block is also arc-shaped, and the second flow dividing block blocks the plurality of through holes on the first wall body after being arranged.

[0014] As a further technical solution, the first wall body, the second wall body, the first flow dividing block and the second flow dividing block are integrally fired from magnesium material, and fiber tissues are additionally arranged in the first wall body, the second wall body, the first flow dividing block and the second flow dividing block.

[0015] As a further technical solution, the through holes are obliquely arranged on the first wall body and the second wall body.

[0016] As a further technical solution, the angle between the axis of the through hole and the first wall body or the second wall body is 15°-30°.

[0017] As a further technical solution, the filter is made of aluminum oxide.

[0018] As a further technical solution, the filter has a plurality of filter holes, and the filter has 8-10 uniformly arranged filter holes.

[0019] As a further technical solution, the wall thickness of the first wall body and the second wall body is greater than or equal to 100 mm.

[0020] The beneficial effects of the utility model are as follows:

[0021] In the utility model, the filter is arranged in the through hole of the first wall body and the second wall body, the molten steel passing through the through hole can be effectively filtered, the outflow of the steel slag through the through hole is greatly reduced, and the quality of the product is significantly improved. The trapezoidal wall body design, combined with the filter, can better change the flow field distribution in the tundish, so that the hydrodynamic state of the molten steel fluid is more optimal, further promoting the collision, aggregation and floating of the inclusions in the molten steel, and improving the purification effect of the molten steel. The filter can filter a part of the aluminum oxide inclusions; meanwhile, the flow speed of the molten steel in the tundish can be slowed down, the floating of the inclusions or other inclusions is promoted, the setting of the filter can make the time of the molten steel reaching the water inlets of the tundish more consistent, the temperature of each flow is uniform, the leakage and plugging phenomena are effectively reduced, and the stability and continuity of the production are improved. Compared with the existing slag retaining wall only having a blocking effect, the stagnant flow area in the tundish can be reduced, the laminar flow area can be increased, the flow state of the molten steel in the tundish can be optimized, and the quality and production efficiency of the molten steel can be improved. The plurality of filters are arranged in the through holes, which is convenient for manufacturing and installation as a further technical solution, the cost is relatively low, the slag retaining effect of the tundish and the quality of the molten steel can be greatly improved without significantly increasing the production cost of the enterprise. BRIEF DESCRIPTION OF DRAWINGS

[0022] The above features, technical characteristics, advantages and implementation manners of the present application will be further described in a clear and understandable manner in combination with the preferred embodiments and the accompanying drawings.

[0023] Fig. 1 Structure diagram of the present application;

[0024] Fig. 2 Structure diagram of the present application;

[0025] Fig. 3 Structure diagram of the present application;

[0026] Fig. 4 Structure diagram of the present application.

[0027] In the figure: 1, first wall, 2, second wall, 3, through hole, 4, filter, 5, first shunt block, 6, second shunt block, 7, filter hole. DETAILED DESCRIPTION

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, specific implementation manners of the present application will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and for those skilled in the art, without creative labor, further technical solutions can be understood, and in some drawings, only one of the components with the same structure or function is schematically shown, or only one of them is marked. In this paper, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0029] In this paper, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0030] In addition, in the description of the present application, the terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0031] Reference Figs. 1-4For the first embodiment of the utility model, propose a kind of filter effect's slag retaining wall, comprising: first wall body 1;Second wall body 2 has two, is arranged in the first wall body 1 both sides, the first wall body 1 and the second wall body 2 between having included angle, the first wall body 1 and the second wall body 2 on having several through holes 3, the through hole 3 is used to make molten steel flow through;Filtering element 4 has several, is arranged in the through hole 3, several filtering element 4 is used to filter the molten steel that flows in through hole 3.

[0032] In the embodiment, filtering element 4 is arranged in the through hole 3 of the first wall body 1 and the second wall body 2, can effectively filter the molten steel passing through the through hole 3, greatly reduces the situation that steel slag flows out through the through hole 3, significantly improves the quality of product.Trapezoidal wall body design, in combination with filtering element 4, can better change the flow field distribution in tundish, make molten steel fluid dynamic state reach more optimal, further promote the collision, aggregation and floating of inclusions in molten steel, improve the purification effect of molten steel.Filtering element 4 can filter a part of alumina inclusions;At the same time, the flow speed of molten steel in tundish can be slowed down, promote the floating of inclusions or other inclusions;The setting of filtering element 4 can make the time of molten steel reaching each flow tundish nozzle more consistent, uniform the temperature of each flow, effectively reduce the phenomenon of leakage and blockage, improve the stability and continuity of production.Compared with the existing slag retaining wall only having blocking effect, can reduce the stagnation area in tundish, increase laminar flow region, optimize the flow state of molten steel in tundish, improve the quality and production efficiency of molten steel.Multiple filtering elements 4 are arranged in through hole 3 respectively, facilitate as further technical scheme manufacturing and installation, relatively low cost, can greatly improve the slag retaining effect of tundish and molten steel quality under the premise of not significantly increasing enterprise production cost.

[0033] As a further technical solution, further comprising: first flow dividing block 5 has two, is arranged at the junction of the first wall body 1 and the second wall body 2, the first flow dividing block 5 is arc-shaped.

[0034] In this embodiment, the two first flow dividing blocks 5 added in the form of circular arcs can significantly reinforce the connection between the first wall body 1 and the second wall body 2, enhance the structural stability of the whole slag retaining wall, and make it not easy to deform or be damaged in the working environment of long-term impact of molten steel, thereby prolonging the service life of the slag retaining wall. The first flow dividing blocks 5 in the form of circular arcs can effectively divide the impact of molten steel, reduce the direct impact of molten steel on the connection of the wall bodies, reduce the wear and corrosion of the connection, and further protect the structural integrity of the slag retaining wall. The flow dividing effect of molten steel helps to optimize the flow state of molten steel in the tundish, makes the flow of molten steel more uniform and stable, is beneficial to the collision, aggregation and floating of inclusions, thereby improving the purification effect of molten steel and improving the product quality. The existence of the first flow dividing blocks 5 can also reduce the turbulence phenomenon of molten steel at the connection of the wall bodies, reduce energy loss, and improve the efficiency of molten steel flow. This simple and practical flow dividing block design is easy to manufacture and install, and will not significantly increase the manufacturing cost and installation difficulty of the slag retaining wall.

[0035] As a further technical solution, it also includes: the second flow dividing block 6 is detachably arranged on the first wall body 1, the second flow dividing block 6 is also in the form of an arc, and the second flow dividing block 6 covers the plurality of through holes 3 on the first wall body 1 after installation.

[0036] In this embodiment, the second flow dividing block 6 is arranged in the form of an arc on the first wall body 1, and when it is necessary to adjust the flow path or flow rate of molten steel in the tundish, the second flow dividing block 6 can be flexibly installed or detached. When installed, it can cover part of the through holes 3 to control the flow rate and flow of molten steel, meet the needs of different production processes and working conditions, and improve the applicability and flexibility of the slag retaining wall. The arc-shaped second flow dividing block 6 can reduce the direct impact of molten steel on the first wall body 1 while playing a flow dividing role, reduce the wear of the wall body, and prolong the service life of the wall body. The detachable design of the second flow dividing block 6 facilitates its maintenance and replacement, and if the flow dividing block is damaged or worn, it can be replaced individually in time, thereby reducing maintenance costs. Covering part of the through holes 3 can change the distribution of molten steel passing through the through holes 3, make the flow of molten steel in the tundish more uniform, further optimize the flow state of molten steel, and be beneficial to improving the quality and production efficiency of molten steel. This detachable flow dividing block design is simple and ingenious, easy to operate, and realizes effective regulation and control of the flow of molten steel without changing the main structure of the slag retaining wall, thereby providing more operability and convenience for the production process.

[0037] As a further technical solution, the first wall body 1, the second wall body 2, the first flow dividing block 5 and the second flow dividing block 6 are all integrally fired from magnesium material, and fiber organization is additionally arranged inside.

[0038] In this embodiment, the first wall body 1, the second wall body 2, the first flow dividing block 5 and the second flow dividing block 6 are all made of magnesium material and fired as a whole. This material with high magnesium content has excellent high-temperature resistance and can maintain good stability and structural strength in the high-temperature environment of molten steel, effectively prolonging the service life of the slag stopping wall. The magnesium material has strong corrosion resistance, which can reduce the corrosion and wear of the slag stopping wall by molten steel and steel slag, reduce maintenance costs, and improve the reliability of the equipment. The internal additional fiber organization enhances the toughness and thermal shock resistance of the wall body and the flow dividing block, making them less likely to crack and damage under frequent thermal shock, ensuring the continuous and stable operation of the slag stopping wall under harsh working conditions. The whole firing process makes the material of each part uniform and consistent, eliminating the weak links of splicing or welding, improving the overall structural strength and sealing performance, and better playing the roles of slag stopping and filtering. Using the same magnesium material and firing process to manufacture all parts simplifies the production process, facilitates quality control and management, and reduces production costs.

[0039] As a further technical solution, the through hole 3 is inclinedly arranged on the first wall body 1 and the second wall body 2.

[0040] In this embodiment, the through hole 3 is inclinedly arranged on the first wall body 1 and the second wall body 2, which can change the direction and speed of the molten steel passing through, make the molten steel form a more complex flow path in the tundish, increase the chances of collision, aggregation and floating of inclusions in the molten steel, thereby more effectively purifying the molten steel and improving the quality of the molten steel. The inclined through hole 3 helps to reduce the impact force of the molten steel when passing through the through hole 3, reduces the wear of the wall body and the filter 4, prolongs the service life of the slag stopping wall and the replacement cycle of the filter 4, and reduces the maintenance cost. This inclined through hole 3 can optimize the temperature distribution of the molten steel in the tundish, make the temperature of each part of the molten steel more uniform, reduce the quality problems caused by uneven temperature, and improve the consistency and stability of the product. The inclined through hole 3 design can avoid the formation of short circuit flow of the molten steel at the through hole 3, so that the molten steel stays in the tundish for a longer time, further improving the refining effect of the molten steel. Compared with the traditional vertical through hole 3, the inclined through hole 3 significantly improves the performance of the slag stopping wall without increasing the complexity of the wall body structure, providing a strong guarantee for producing high-quality steel products.

[0041] As a further technical solution, the inclination angle between the axis of the through hole 3 and the first wall body 1 or the second wall body 2 is 15°-30°.

[0042] In this embodiment, when the angle between the axis of the through hole 3 and the first wall 1 or the second wall 2 is 15°-30°, the flow state of the molten steel can be optimized while ensuring the effective passage of the molten steel. This angle range can make the flow path and speed of the molten steel reach a more ideal balance, which not only promotes the sufficient collision and floating of inclusions, but also avoids excessive turbulence of the molten steel flow, thereby improving the purification efficiency and quality stability of the molten steel. Within the angle range of 15°-30°, the impact angle and intensity of the molten steel on the wall and the filter 4 can be effectively controlled, reducing the wear of the wall and the filter 4 and prolonging their service life. Compared with too large or too small angles, this range can reduce maintenance costs and equipment replacement frequency. This specific angle range helps to more accurately adjust the temperature distribution of the molten steel in the tundish, making the molten steel temperature more uniform, thereby reducing quality problems such as uneven solidification and crystallization defects caused by temperature differences, and improving the quality and performance consistency of steel products.

[0043] As a further technical solution, the filter 4 is made of alumina.

[0044] In this embodiment, the filter 4 is made of alumina, which has extremely high hardness and wear resistance, can maintain good structural integrity during long-term contact with molten steel, prolong the service life of the filter 4, reduce the replacement frequency, and reduce production costs. Alumina has excellent high-temperature resistance and will not deform or fail in the high-temperature environment of the molten steel, ensuring that the filter 4 can stably play a filtering role and improving the filtering effect and quality of the molten steel. Alumina has stable chemical properties and is not prone to chemical reaction with molten steel and impurities therein, thereby avoiding contamination of the molten steel composition and ensuring the purity and quality of the molten steel.

[0045] As a further technical solution, the filter 4 has a plurality of filter holes 7, and the filter 4 has 8-10 uniformly arranged filter holes 7.

[0046] In this embodiment, the filter 4 has a plurality of uniformly arranged filter holes 7, and each filter 4 has 8-10 filter holes 7. This number and distribution design can ensure that the molten steel has sufficient filtering area when passing through the filter 4, effectively intercepting slag and impurities and improving the filtering effect, thereby significantly improving the purity of the molten steel. The 8-10 uniformly distributed filter holes 7 can make the flow rate and flow distribution of the molten steel passing through the filter 4 more uniform, avoid local flow rate being too fast or too slow, optimize the flow state of the molten steel, reduce turbulence, and further promote the floating and removal of inclusions.

[0047] As a further technical solution, the first wall 1 and the second wall 2 have a wall thickness greater than or equal to 100 mm.

[0048] In the embodiment, the first wall body 1 and the second wall body 2 have a wall thickness greater than or equal to 100 mm, which can provide sufficient structural strength and stability to withstand the high temperature, high pressure and impact force of molten steel, effectively prevent the wall body from deforming or breaking in a harsh working environment, and prolong the service life of the slag retaining wall. The thick wall thickness of the wall body helps to maintain the temperature stability of the wall body, reduces the influence of molten steel heat transfer on the wall body structure, reduces thermal stress, thereby reducing cracks and damage of the wall body due to thermal expansion and contraction. Sufficient wall thickness can enhance the heat insulation performance of the wall body, reduce the loss of molten steel heat to the outside, improve energy utilization efficiency, and at the same time reduce the temperature of the surrounding environment and improve the working conditions.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application. It should be included in the scope of the claims of the present application.

Claims

1. A filter-equipped dam, characterized by, The utility model relates to a molten steel filtering device, including: First wall (1); Second wall (2) have two, set up in first wall (1) both sides, the included angle between first wall (1) and second wall (2), first wall (1) and second wall (2) have several through holes (3), the through hole (3) is used to make molten steel flow through; Filtering piece (4) have several, set up in the through hole (3), several filtering piece (4) are used to filter the molten steel that flows through in through hole (3); First shunt block (5) have two, set up in first wall (1) and second wall (2) junction, first shunt block (5) is arc-shaped; Second shunt block (6) can be detachably set up in first wall (1), second shunt block (6) is also arc-shaped, second shunt block (6) installs and will first wall (1) on several through holes (3) of shielding.

2. A filter dam according to claim 1, characterised in that The through hole (3) is obliquely arranged on the first wall (1) and the second wall (2).

3. A filter dam according to claim 1, wherein The inclination angle between the axis of the through hole (3) and the first wall (1) or the second wall (2) is 15°-30°.

4. A filter dam according to claim 1, wherein The filtering piece (4) is made of aluminum oxide.

5. A filter dam according to claim 1, wherein The filtering piece (4) has a plurality of filter holes (7), and each filtering piece (4) has 8-10 uniformly arranged filter holes (7).

6. A filter dam according to claim 1, wherein The thickness of the first wall (1) and the second wall (2) is greater than or equal to 100 mm.

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