阅读说明：本技术 一种干式振动型铝镁挡渣墙及制备方法 (Dry vibration type aluminum-magnesium slag retaining wall and preparation method thereof ) 是由 江群英 施永益 张新财 徐琰宾 严海瑛 于 2020-12-31 设计创作，主要内容包括：本发明公开了一种干式振动型铝镁挡渣墙及制备方法,旨在提供给了一种分体组合的形式且制作简单易行,有效去除钢水杂质、提升钢水纯净度的干式振动型铝镁挡渣墙及制备方法。包括上墙体以及设置在上墙体下方的下墙体,所述上墙体侧壁设置有贯穿上墙体的流钢孔,所述上墙体底部设有安装块,所述流钢孔内壁设置有若干挡渣块,所述下墙体设置有安装面和阶梯面,所述安装面设置有安装槽,所述安装块与安装槽连接。本发明的有益效果是：采用分体组合的形式制作加工,简单易行,解决了整体制作挡渣墙的困难,提升了制作效率；减缓钢水流速,增加钢水停留时间,使杂质上浮,提升钢水纯净度。(The invention discloses a dry vibration type aluminum-magnesium slag retaining wall and a preparation method thereof, and aims to provide the dry vibration type aluminum-magnesium slag retaining wall which is in a split combination form, is simple and easy to manufacture, effectively removes impurities in molten steel and improves the purity of the molten steel and the preparation method thereof. Including last wall body and the lower wall body of setting in last wall body below, it is provided with the class steel hole that runs through the wall body to go up the wall body lateral wall, it is equipped with the installation piece to go up the wall body bottom, class steel hole inner wall is provided with a plurality of slaggers, the wall body is provided with installation face and ladder face down, the installation face is provided with the mounting groove, the installation piece is connected with the mounting groove. The invention has the beneficial effects that: the slag blocking wall is manufactured and processed in a split combination mode, is simple and feasible, solves the problem of difficulty in integrally manufacturing the slag blocking wall, and improves the manufacturing efficiency; the flow velocity of the molten steel is slowed down, the residence time of the molten steel is prolonged, impurities float upwards, and the purity of the molten steel is improved.)

1. The utility model provides a dry-type vibration type almag slag-stopping wall, characterized by includes wall body (1) and sets up lower wall body (2) in last wall body (1) below, it is provided with stream steel hole (3) that run through last wall body (1) to go up wall body (1) lateral wall, it is equipped with installation piece (4) to go up wall body (1) bottom, stream steel hole (3) inner wall is provided with a plurality of slag-stopping block (30), wall body (2) are provided with installation face (20) and accept face (21) down, installation face (20) are provided with mounting groove (22), installation piece (4) are connected with mounting groove (22).

2. The dry vibration type aluminum-magnesium slag wall as claimed in claim 1, wherein the upper wall (1) is a circular arc wall with a right trapezoid cross section, the inclined side wall of the upper wall (1) faces the inflow direction of molten steel, an air inlet (10) is arranged at the top of the upper wall (1), an air vent pipeline (11) is arranged inside the upper wall, and the air vent pipeline (11) is communicated with the air inlet (10).

3. The dry vibration type aluminum-magnesium slag wall as claimed in claim 2, wherein the tapping hole (3) is arranged obliquely, the central axis of the tapping hole (3) forms an acute angle with the bottom surface of the upper wall (1), and the orifice of the tapping hole (3) arranged on the inclined side wall of the upper wall (1) is lower than the orifice of the tapping hole (3) arranged on the vertical side wall of the upper wall (1).

4. The dry vibration type aluminum-magnesium slag wall according to claim 3, wherein the slag blocking block (30) is a semicircular block with a trapezoidal cross section, the height of the slag blocking block (30) is smaller than the radius of the steel flowing hole (3), a second air brick (31) is arranged in the slag blocking block (30), the cross section of the second air brick (31) is cross-shaped, one end face of the second air brick (31) is connected with the ventilation pipeline (11), the corresponding end face faces the central axis of the steel flowing hole (3), and the other end faces of the second air brick (31) are in contact with the outer surface of the slag blocking block (30).

5. The dry vibration type aluminum-magnesium slag wall as claimed in claim 4, wherein the orifice of the steel flowing hole (3) formed in the inclined side wall of the upper wall (1) is provided with a ceramic ring (32), the ceramic ring (32) is sleeved with the steel flowing hole (3), the end of the ceramic ring (32) is provided with a flange, and the flange surface is attached to the inclined side wall of the upper wall (1).

6. The dry vibration type aluminum magnesium slag wall according to claim 1, wherein a reinforcing plate (12) is arranged in the upper wall body (1), and the reinforcing plate (12) is close to and parallel to the vertical side wall of the upper wall body (1).

7. A dry vibration type al-mg slag wall according to claim 2, wherein the air inlet (10) is externally connected with an air inlet pipe (13), and the air inlet pipe (13) is externally connected with an air inlet pump.

8. The dry vibration type aluminum-magnesium slag wall according to claim 1, wherein the receiving surface (21) is step-shaped, the horizontal surfaces of the receiving surface (21) are in arc transition connection, the horizontal surface of the receiving surface (21) is provided with a plurality of rectangular first air bricks (23), the top surfaces of the first air bricks (23) are level with the horizontal surface, the bottom surfaces of the first air bricks are communicated with the ventilation pipeline (11), the horizontal surface of the receiving surface (21) connected with the inclined side wall of the upper wall (1) is the highest level, and the horizontal surface is in arc transition connection with the inclined side wall of the upper wall (1).

9. The dry vibration type magnesium-aluminum slag wall as claimed in claim 1, wherein the section of the mounting groove (22) is inverted T-shaped, the section of the mounting block (4) is I-shaped, the upper end of the mounting block (4) is connected with the upper wall (1), and the lower end of the mounting block is connected with the mounting groove (22) in a matching manner.

10. The method for preparing a dry vibration type aluminum-magnesium slag wall according to claim 1, which comprises the following steps:

preparing a mixture, namely mixing the aggregate and the additive to obtain a dry vibration type magnesium-aluminum mixture meeting the requirement;

pouring the lower wall body, namely placing the moulding bed of the lower wall body (2) on a pouring platform, placing the first air brick (23) at the corresponding position of the moulding bed, pouring the mixture into the moulding bed of the lower wall body (2), standing, demoulding and firing;

pouring an upper wall body; placing the moulding bed of the upper wall body (1) on a pouring platform, placing the second air bricks (31) at corresponding positions of the moulding bed, placing the mounting blocks (4) at the bottom of the moulding bed, placing the reinforcing plates (12) at positions of the moulding bed close to the outer side wall, pouring the mixture into the moulding bed of the upper wall body (1), standing, demolding and firing;

mounting a reinforcing piece, and sleeving the ceramic ring (32) in the flow steel hole (3) to ensure that the flange surface of the ceramic ring (32) is connected with the upper wall body (1);

and (3) combining the upper wall body and the lower wall body, namely, installing the installation block (4) of the upper wall body (1) into the installation groove (22) of the lower wall body (2) to complete the combination of the upper wall body and the lower wall body.

Technical Field

The invention relates to the technical field of refractory materials, in particular to a dry vibration type aluminum-magnesium slag retaining wall and a preparation method thereof.

Background

Iron and steel is an important basic raw material, and plays a very important role in economic development of various countries in the world. In the process of producing various steel products in a steel plant, two methods are used for solidifying and forming molten steel: conventional die casting and continuous casting processes. The continuous casting technology appearing in European and American countries in the fifties of the twentieth century is an advanced technology for directly pouring and forming molten steel, and compared with the traditional method, the continuous casting technology has the remarkable advantages of greatly improving the metal yield and the casting blank quality, saving energy and the like. The tundish is a refractory vessel used in steel making and receives molten steel poured from a ladle and then distributed to the crystallizers through tundish nozzles.

The slag wall is used in the molten steel continuous casting tundish, so that the residence time of the molten steel in the tundish can be prolonged to a certain extent, impurities in the molten steel can be gathered and float upwards, and the molten steel can be purified. The slag-stopping wall with a complex structure used at present is difficult to produce and manufacture, meanwhile, the slag-stopping wall has short stopping time for molten steel, the floating speed of impurities is slow, and the purity of the molten steel is low, so that the slag-stopping wall which is simple and easy to manufacture and can effectively improve the purity of the molten steel is needed to improve the problems.

Disclosure of Invention

The invention provides a dry vibration type aluminum-magnesium slag baffle wall which has a split combination form, is simple and easy to manufacture, effectively removes impurities in molten steel and improves the purity of the molten steel and a preparation method thereof, aiming at overcoming the defects of difficult manufacture and poor impurity removal effect of the slag baffle wall in the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a dry-type vibration type almag slag wall, includes the wall body and sets up the lower wall body in last wall body below, it is provided with the class steel hole that runs through the wall body to go up the wall body lateral wall, it is equipped with the installation piece to go up the wall body bottom, class steel downthehole wall is provided with a plurality of slag blocks, the wall body is provided with the installation face down and accepts the face, the installation face is provided with the mounting groove, the installation piece is connected with the mounting groove.

The slag wall comprises an upper wall body and a lower wall body, and the upper wall body is arranged above the lower wall body. The bottom of the upper wall body is provided with an installation block, the upper surface of the lower wall body is provided with an installation surface and a receiving surface, the installation surface is provided with an installation groove, and the upper wall body and the lower wall body are installed and connected through the matching of the installation block and the installation groove. The slag blocking wall is divided into two parts, so that the slag blocking wall can be conveniently cast and molded, and the structure of the slag blocking wall is easier to realize. The side wall of the upper wall body is provided with a steel flowing hole, and the inner side wall and the outer side wall of the upper wall body are communicated through the steel flowing hole. The inner wall of the steel flowing hole is provided with a plurality of slag blocks, the slag blocks can slow down the outflow speed of molten steel, the time of the molten steel in the tundish is prolonged, impurities in the molten steel can be more favorably floated and removed, impurities can be more favorably captured, and the purity of the molten steel is improved.

Preferably, the upper wall body is an arc-shaped wall body, the cross section of the upper wall body is in a right trapezoid shape, the side wall of the inclined surface of the upper wall body faces the inflow direction of molten steel, the top of the upper wall body is provided with an air inlet, a vent pipeline is arranged inside the upper wall body, and the vent pipeline is communicated with the air inlet. The section of the upper wall body is in a right trapezoid shape, the inclined surface of the upper wall body faces the molten steel pouring side, one side surface, perpendicular to the horizontal plane, of the upper wall body is the molten steel discharging side, and the inclined surface of the upper wall body is arranged to increase the contact time between the molten steel and the slag stopping wall, so that the floating of impurities in the molten steel is facilitated. Go up the air inlet that wall body top set up and the vent line intercommunication of inside setting, the air inlet can transport corresponding position with external argon gas through vent line, provides the transport passageway of argon gas.

Preferably, the steel flowing holes are obliquely arranged, the central axes of the steel flowing holes form an acute angle with the bottom surface of the upper wall body, and the orifices of the steel flowing holes arranged on the inclined side wall of the upper wall body are lower than the orifices of the steel flowing holes on the vertical side wall of the upper wall body. The steel flowing holes are obliquely arranged, and the orifices of the steel flowing holes in the inclined side wall of the upper wall body are lower than the orifices of the vertical side wall of the upper wall body, so that when molten steel is discharged outwards through the steel flowing holes, the contact time of the molten steel and the slag blocking wall can be prolonged compared with the horizontally arranged steel flowing holes, the flowing of the molten steel is slowed down, the floating of impurities in the molten steel is facilitated, and the purity of the molten steel is improved.

Preferably, the slag blocking block is a semicircular block, the cross section of the slag blocking block is trapezoidal, the height of the slag blocking block is smaller than the radius of the steel flowing hole, a second air brick is arranged in the slag blocking block, the cross section of the second air brick is cross-shaped, one end face of the second air brick is connected with the vent pipeline and corresponds to the central axis of the steel flowing hole, and the other end faces of the second air brick are in contact with the outer surface of the slag blocking block. The height of the slag blocking block is smaller than the radius of the steel flowing hole, so that the molten steel can pass through the slag blocking block; the inclined side surface of the slag blocking block is arranged to provide a guiding effect for the flow direction of the molten steel; the cross-section of the second air brick arranged in the slag stopping block is cross-shaped, the end face of the second air brick is in contact with and parallel to the outer surface of the slag stopping block, the second air brick is communicated with the vent pipeline, the second air brick is guaranteed to be in full contact with flowing molten steel, meanwhile, the trapezoidal cross-section of the second air brick enables the molten steel to be in full contact with the slag stopping block when the molten steel passes through the steel flowing hole, argon bubbles are generated in the molten steel from argon gas discharged from the vent pipeline, the argon bubbles collide with impurities in the molten steel, impurities are promoted to float upwards and be captured and removed, and the purity of the molten steel is improved.

Preferably, a ceramic ring is arranged at an orifice of the steel flowing hole arranged on the side wall of the inclined plane of the upper wall body, the ceramic ring is sleeved with the steel flowing hole, a flange edge is arranged at the end part of the ceramic ring, and the flange edge surface is attached to the side wall of the inclined plane of the upper wall body. The ceramic ring can prevent the orifice of the steel flowing hole of the upper wall body from being damaged due to the overlarge impact force of the fallen molten steel, and the ceramic ring can be made of boron nitride materials, so that the upper wall body has better impact resistance.

Preferably, a reinforcing plate is arranged in the upper wall body, and the reinforcing plate is close to the vertical side wall of the upper wall body and is parallel to the outer side surface of the upper wall body. The strength of the upper wall body can be ensured by the design of the reinforcing plate, and the shock resistance of the upper wall body is improved.

Preferably, the air inlet is externally connected with an air inlet pipe, and the air inlet pipe is externally connected with an air inlet pump. The external air inlet pump can enable argon entering the air inlet to have certain impact force, so that the argon fully collides with impurities in the molten steel and promotes the impurities to float upwards to be removed, and the purity of the molten steel is improved.

Preferably, the bearing surface is step-shaped, the horizontal surfaces of the bearing surface are in arc transition connection, the horizontal surface of the bearing surface is provided with a plurality of rectangular first air bricks, the top surfaces of the first air bricks are parallel to the horizontal surface, the bottom surfaces of the first air bricks are communicated with the vent pipeline, the horizontal surface of the bearing surface connected with the side wall of the inclined surface of the upper wall body is the highest level, and the horizontal surface is in arc transition connection with the side wall of the inclined surface of the upper wall body. The bearing surface designed in the lower wall body is contacted with the molten steel for the first time, the bearing surface is step-shaped, the impact of impact force on the side wall of the inclined surface of the upper wall body in the falling process of the molten steel can be effectively relieved, a plurality of first rectangular air bricks are arranged on the horizontal plane of the bearing surface, the lower ends of the air bricks are communicated with the vent pipeline, and the argon entering the vent pipeline can be discharged through the first air bricks and enter the molten steel and fully collide with impurities in the molten steel, so that the impurities are promoted to float upwards and be removed; circular arc transitional connection is formed among layers of the bearing surface, so that molten steel can flow smoothly and a dead water area is prevented from being formed; the highest layer of the bearing surface is in tangent connection with the side wall of the inclined plane of the upper wall body, molten steel on the lower wall body is effectively guided upwards, the flowing direction of the molten steel is changed, impurities on the bottom layer are removed, meanwhile, the floating time of the impurities is shortened, and the purity of the molten steel is improved.

Preferably, the section of the mounting groove is in an inverted T shape, the section of the mounting block is in an I shape, the upper end of the mounting block is connected with the upper wall body, and the lower end of the mounting block is connected with the mounting groove in a matched manner. The mounting groove is a through groove with a section in an inverted T shape and a certain radian, the mounting groove penetrates through the end faces of two sides of the lower wall body, the mounting block is connected with the upper wall body when the upper wall body is poured, the section of the mounting block is in an I shape, the I shape of the section of the mounting block is matched with the inverted T shape of the section of the mounting groove, the mounting block can slide into the mounting groove from one side of the mounting groove to realize matching connection with the mounting groove, the connection stability of the upper wall body and the lower wall body is ensured, meanwhile, the split combination mode is adopted, the mounting groove is simple and easy to implement, the difficulty in manufacturing the integral slag blocking wall is avoided, and.

A preparation method of a dry vibration type aluminum-magnesium slag wall comprises the following steps:

1) preparing a mixture, namely mixing the aggregate and the additive to obtain a dry vibration type magnesium-aluminum mixture meeting the requirement;

2) pouring the lower wall body, namely placing the moulding bed of the lower wall body on a pouring platform, placing the second air brick at the corresponding position of the moulding bed, pouring the mixture into the moulding bed of the lower wall body, standing, demoulding and firing;

3) pouring an upper wall body; placing the bed film of the upper wall body on a pouring platform, placing the first air brick at the corresponding position of the bed film, placing an installation block at the bottom of the bed film, placing a reinforcing plate at the position, close to the outer side wall, of the bed film, pouring the mixture into the bed film of the upper wall body, standing, demolding and firing;

4) mounting a reinforcing piece, and sleeving a ceramic ring in the flow steel hole to enable the flange surface of the ceramic ring and the upper wall body;

5) the upper wall body and the lower wall body are combined, the mounting block of the upper wall body is mounted in the mounting groove of the lower wall body, and the combination of the upper wall body and the lower wall body is completed.

The invention has the beneficial effects that: the integral slag blocking wall is manufactured and processed in a split combination mode, so that the method is simple and feasible, the difficulty in integrally manufacturing the slag blocking wall is solved, and the manufacturing efficiency is improved; the design of the relevant structure of the bearing surface relieves the falling impact force of the molten steel, increases the residence time of the molten steel and effectively improves the purity of the molten steel; the design of the slag blocking blocks arranged in the steel flowing holes and in the steel flowing holes in an inclined upward manner is favorable for slowing down the flow velocity of molten steel, increasing the residence time of the molten steel, being favorable for floating impurities in the molten steel and effectively improving the purity of the molten steel; the air bricks arranged on the inner part and the bearing surface of the slag blocking block inject external argon into molten steel, so that argon bubbles impact impurities, and the purity of the molten steel is improved.

Drawings

FIG. 1 is an overall perspective view of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

fig. 3 is a top view of the lower wall.

In the drawings, there is shown in the drawings,

1. the novel steel wall comprises an upper wall body, a lower wall body, a steel flowing hole, a mounting block, an air inlet hole, an air vent pipeline, a reinforcing plate, an air inlet pipe, a mounting surface, a bearing surface, a mounting groove, a first air brick, a slag stopping block, a mounting groove and a ceramic ring, wherein the upper wall body.

Detailed Description

The invention is further described with reference to the following figures and detailed description.

In the case of the example 1, the following examples are given,

as shown in fig. 1 to 3, the dry vibration type aluminum magnesium slag wall includes an upper wall 1 and a lower wall 2 disposed below the upper wall 1. The side wall of the upper wall body 1 is provided with a steel flowing hole 3 penetrating through the upper wall body 1. The bottom of the upper wall body 1 is provided with an installation block 4. The inner wall of the steel flowing hole 3 is provided with a plurality of slag blocks 30. The lower wall 2 is provided with a mounting surface 20 and a receiving surface 21. The mounting surface 20 is provided with a mounting groove 22. The mounting block 4 is connected to the mounting groove 22.

As shown in fig. 1 and 2, the upper wall 1 is a circular arc wall with a right trapezoid cross section. The side wall of the inclined plane of the upper wall body 1 faces the inflow direction of the molten steel. An air inlet 10 is arranged at the top of the upper wall body 1, and a ventilation pipeline 11 is arranged inside the upper wall body. The ventilation duct 11 communicates with the intake port 10. The steel flowing holes 3 are obliquely arranged. The central axis of the steel flowing hole 3 and the bottom surface of the upper wall body 1 form an acute angle. The orifice of the steel flowing hole 3 arranged on the inclined side wall of the upper wall body 1 is lower than the orifice of the steel flowing hole 3 on the vertical side wall of the upper wall body 1. The slag stopper 30 is a semicircular block with a trapezoidal section. The height of the slag stopping block 30 is smaller than the radius of the steel flowing hole 3. A second air brick 31 is arranged in the slag stopping block 30. The cross section of the second air brick 31 is cross-shaped. One end face of the second air brick 31 is connected with the vent pipeline 11, and the corresponding end face faces the central axis of the steel flowing hole 3. The other end surface of the second air brick 31 is contacted with the outer surface of the slag stopping block 30. The orifice of the steel flowing hole 3 arranged on the inclined side wall of the upper wall 1 is provided with a ceramic ring 32. The ceramic ring 32 is sleeved with the runner hole 3. The end of the ceramic ring 32 is provided with a flange edge, and the flange edge surface is attached to the side wall of the inclined surface of the upper wall 1. A reinforcing plate 12 is arranged in the upper wall body 1. The reinforcing plate 12 is close to the vertical side wall of the upper wall body 1 and is parallel to the vertical side wall of the upper wall body 1. The air inlet 10 is externally connected with an air inlet pipe 13. The air inlet pipe 13 is externally connected with an air inlet pump.

As shown in fig. 3, the receiving surface 21 is stepped. The horizontal planes of the bearing surfaces 21 are in arc transition connection. The horizontal surface of the bearing surface 21 is provided with a plurality of first air bricks 23 in a rectangular shape. The top surface of the first air brick 23 is level with the horizontal surface, and the bottom surface is communicated with the vent pipeline 11. The horizontal plane connecting the bearing surface 21 and the inclined side wall of the upper wall 1 is the highest level, and the horizontal plane is in arc transition connection with the inclined side wall of the upper wall 1. The mounting groove 22 has an inverted T-shaped cross-section. The section of the mounting block 4 is I-shaped. The upper end of the mounting block 4 is connected with the upper wall body 1, and the lower end is connected with the mounting groove 22 in a matching way.

A method for preparing a dry vibration type aluminum-magnesium slag wall is shown in figures 1-3 and comprises the following steps:

1) and (3) preparing a mixture, namely mixing the aggregate and the additive to obtain the dry vibration type magnesium-aluminum mixture meeting the requirement.

2) And (3) pouring the lower wall body, placing the moulding bed of the lower wall body 2 on a pouring platform, placing the first air brick 23 at the corresponding position of the moulding bed, pouring the mixture into the moulding bed of the lower wall body 2, standing, demoulding and firing.

3) Pouring the upper wall body, placing the moulding bed of the upper wall body 1 on a pouring platform, placing the second air brick 31 at the corresponding position of the moulding bed, placing the mounting block 4 at the bottom of the moulding bed, placing the reinforcing plate 12 at the position of the moulding bed close to the outer side wall, pouring the mixture into the moulding bed of the upper wall body 1, standing, demoulding and firing.

4) And (3) mounting a reinforcing piece, and sleeving the ceramic ring 32 in the flow steel hole 3 to ensure that the flange surface of the ceramic ring 32 is connected with the upper wall body 1.

And (3) combining the upper wall body and the lower wall body, namely, installing the installation block 4 of the upper wall body 1 into the installation groove 22 of the lower wall body 2 to complete the combination of the upper wall body and the lower wall body.