WO2011015028A1

WO2011015028A1 - Extractable porous brick

Info

Publication number: WO2011015028A1
Application number: PCT/CN2010/000736
Authority: WO
Inventors: 孙荣海; 刘百宽; 吴晓; 王锋刚; 王静蕊; 刘国威; 刘宁
Original assignee: 濮阳濮耐高温材料（集团）股份有限公司
Priority date: 2009-08-03
Filing date: 2010-05-24
Publication date: 2011-02-10
Also published as: CN101619380A; CN101619380B

Abstract

An extractable porous brick contains a porous brick body (1) and an air supplying pipe (2). A bottom plate (4) is set on the bottom of the porous brick body (1), and an air chamber (5) is formed between the bottom surface of the porous brick body (1) and the bottom plate (4). The top end of the air supplying pipe (2) passes through the bottom plate(4) and the air chamber(5), and joins the porous brick body (1) in a fixed manner, meanwhile, the air supplying pipe (2) joins the bottom plate (4) in a sealed manner. The part of pipe wall of the air supplying pipe(2) located in the air chamber(5) is formed with air holes(6) communicated with the air chamber(5). The extractable porous brick has simple structure and high extracting rate.

Description

A WS fc gas brick technology field

The present invention relates to a refractory component for ladle refining, and more particularly to a pullable permeable brick.

Background technique

Breathable brick is a functional refractory component. It is mainly used in the refining process of various metals and alloys. The gas is blown into the molten liquid by the permeable brick to agitate the liquid, so that the high-temperature molten liquid flows, and the inclusions are promoted to float. Thereby achieving the purpose of uniformly melting the liquid composition and temperature, and removing inclusions. Breathable bricks are divided into two types: integral and split. Because the split ventilating brick can be replaced by hot state, it has the characteristics of being able to synchronize with the life of the metallurgical container, and the cost of the split ventilating brick is also higher than that of the whole permeable brick. Low, therefore, most of the steel production uses split ventilation bricks.

When the permeable brick core (or the permeable brick body) is airtight, excessively corroded, etc. during use or reaches the end of its service life, the permeable brick core needs to be replaced. When replacing the ventilated brick core, there are three main ways: One is to use the unpacking machine, so that the operating end enters the venting brick core from the inlet of the metallurgical vessel, but this method is more suitable for overhauling bricks, because If the unpacking machine is used in a hot state, the high temperature will cause great damage to the unpacking machine, affecting its service life, and because the price of the unpacking machine is very expensive and the cost is high, the general factory does not have such equipment, so this The application of the methods is not extensive, and the use of pneumatic tools (such as pneumatic hammers) during overhaul is also common; the second is to use a top bar to produce a permeable brick core, which requires the operator to complete the high temperature environment at the entrance of the metallurgical vessel. , labor intensity, working environment is very low and the efficiency is very low, so the application is also less; the third is the use of drawing equipment, mechanical or manual extraction mechanism at the exit of the metallurgical container for hot swap or cold swap ( Breathable brick core during overhaul. The equipment used in this way is small in size, low in cost and most widely used. However, the above third method does not guarantee that the permeable brick core can be pulled out, for example, by pulling. The gas pipe is connected with the ventilated brick of the ventilated brick core. The gas supply pipe connected with the gas chamber of the split permeable brick is welded on the bottom plate of the gas chamber, and the welding area is small, and the connecting force is relatively small, the same Ground, the sleeve of the split permeable brick (or steel shell) is also welded to the bottom plate, and the welding_connection area is also small, the connection force is relatively small, and in the high temperature environment, the weld seam It is even weaker. Therefore, when the air supply pipe is pulled hard to try to pull out the permeable brick core, the two weak weld positions are easily cracked, and the air supply pipe is separated from the bottom plate or the bottom plate is separated from the sleeve, and the ventilated brick core is removed. However, it remained in the bricks, causing the pullout to fail.

In order to improve the above situation, Chinese Patent Publication No. CN201205598Y discloses a pullable permeable brick in which a metal gas pipe (ie, a gas supply pipe) is extended into a gas chamber of a permeable brick, and a metal is welded at one end of the metal gas pipe near the cover plate and the gas chamber. The metal member may be welded to the cover plate to increase the strength between the metal pipe and the cover plate when being drawn; and when forming the refractory material of the permeable brick core body, the outer surface of the gas permeable core body is close to A recess is reserved at one end of the gas chamber. Before assembling the steel sleeve, a metal piece and a metal connecting piece are embedded in the dimple, and the metal connecting piece is connected between the metal insert and the cover plate, and then the metal inlay is welded. Parts and metal connectors, metal connectors and covers -? Roughly joined together, the strength of the refractory material of the permeable brick core body is utilized by the metal inserts and metal connectors when drawing the residual permeable brick core. Although the permeable brick of the above structure can improve the success rate of the pulling out to some extent, a series of reinforcing operations must be performed on the outer surface of the refractory material of the permeable brick core body, so that the structure of the permeable brick core body becomes very complicated. The production process is very cumbersome, and it consumes materials, costs are high, and more importantly, the above method of enhancing the joint force is still welded, which still has the possibility of cracking of the weld seam, and cannot sufficiently ensure that the ventilated brick core can be successfully pulled out.

Summary of the invention

Therefore, the technical problem to be solved by the present invention is to provide a pullable permeable brick having a simple structure, a weld seam which is not easily cracked during drawing, and a high extraction rate of the ventilated brick body.

. In order to solve the above technical problems, the present invention is achieved by the following technical solutions: A pullable permeable brick, comprising:

a permeable brick body, a bottom of the ventilating brick body is provided with a bottom plate, and a gas chamber is formed between a bottom surface of the permeable brick body and the bottom plate; An air supply pipe having an upper end communicating with the air chamber through the bottom plate, and a sealing connection between the air supply pipe and the bottom plate;

An upper end of the air supply pipe is fixedly connected to the ventilating brick body through the air chamber, and a portion of the air supply tube located in the air chamber is formed with a vent hole communicating with the air chamber.

In the above-mentioned pullable permeable brick, the air supply pipe is fixedly connected to the ventilating brick body by a reinforcing mechanism.

In the above pullable permeable brick, the reinforcing mechanism includes an anchoring plate fixedly coupled to the top end of the air supply pipe, at least a portion of the anchoring plate protruding from an outer wall of the air supply pipe.

In the above-mentioned pullable permeable brick, the reinforcing mechanism further includes an anchor fixedly connected to the outer wall of the air supply pipe.

In the above-mentioned pullable permeable brick, the reinforcing mechanism includes an open-down sleeve disposed inside the ventilating brick body; the sleeve and the gas supply pipe entering a portion of the permeable brick body can be Disassemble the connection.

In the above-mentioned pullable permeable brick, the inner diameter of the sleeve is matched with the outer diameter of the air supply pipe, the inner wall of the sleeve is formed with an internal thread, and the outer wall of the air supply pipe is formed with the inner thread. External thread.

In the above pullable permeable brick, the reinforcing mechanism further includes an anchor fixedly coupled to the outer wall of the sleeve; the outer wall of the sleeve is further formed with a groove.

. In the above-mentioned pullable permeable brick, the outer diameter of the sleeve is matched with the inner diameter of the air supply pipe, and the outer wall of the sleeve is formed with an external thread, and the inner wall of the air supply pipe is formed with the outer thread. internal thread.

In the above pullable permeable brick, the reinforcing mechanism further includes an anchoring plate fixedly attached to the top end of the sleeve, at least a portion of the anchoring plate protruding from an outer wall of the sleeve.

In the above-mentioned pullable permeable brick, the outer part of the ventilating brick body is wrapped with a steel shell, and the lower end of the steel shell is fixedly connected with the bottom plate. The above technical solution of the present invention has the following advantages over the prior art: 1 the pullable of the present invention The gas permeable brick has an upper end of the gas supply pipe fixedly connected with the gas permeable brick body through the gas chamber, and a gas hole communicating with the gas chamber is formed on a part of the pipe wall of the gas supply pipe, thereby increasing the gas supply pipe and the gas permeable brick The connecting force of the body refractory material, when drawing the gas supply pipe, the force receiving portion is not concentrated on the welding place between the gas supply pipe and the bottom plate, the bottom plate and the steel shell, thereby avoiding cracking of the weld seam and improving the success rate of drawing; 2 The pullable ventilating brick of the invention, the air supply pipe is connected with the ventilating brick body through the reinforcing mechanism, further increasing the connection force between the gas supply pipe and the refractory material of the ventilating brick body, thereby maximally avoiding 悴3⁄4 cracking and improving pulling The utility model relates to a pullable ventilating brick, wherein the reinforcing mechanism is an anchoring plate fixedly connected with the top end of the gas supply pipe and an anchor fixedly connected with the outer wall of the gas supply pipe. The reinforcing mechanism has simple structure, low cost and can be increased. The connection force between the large air supply pipe and the refractory material of the ventilating brick body makes the pulling operation more reliable, and avoids the welding between the air supply pipe and the bottom, the bottom plate and the steel shell. The pull-out ventilating brick of the present invention may further comprise an open-down sleeve disposed inside the ventilating brick body and an anchoring plate fixedly attached to the top end of the sleeve. The structure of the reinforcing mechanism is also relatively simple, and the manufacturing process is not complicated, and the connection force between the gas supply pipe and the refractory material of the gas permeable brick body is well increased, the weld cracking is avoided, and the drawing of the gas permeable brick body is increased. Success rate; 5 The pullable permeable brick of the invention, in the case that the inner diameter of the sleeve is matched with the outer diameter of the air supply pipe, the outer wall of the sleeve can also be fixedly connected with the anchor, and various annular grooves and chutes are formed. Etc. ^ to further increase the connection force between the gas supply pipe and the refractory material of the ventilated brick body to ensure the success rate of extraction.

BRIEF DESCRIPTION OF THE DRAWINGS In order to make the content of the present invention easier to understand, the present invention will be further described in detail below with reference to the accompanying drawings

Figure 1 is a schematic view of Embodiment 1 of the present invention;

Figure 2 is a schematic view of the second embodiment of the present invention;

Figure 3 is a schematic illustration of another embodiment of the invention. Reference numerals in the figure are indicated as follows: 1-breathable brick body, 2-air supply pipe, 3-steel case, 4-base plate, 5-air chamber, 6-air hole, 7-anchor plate, 8 - anchor, 9-sleeve cylinder. detailed description Embodiment 1 As shown in FIG. 1, a preferred embodiment of the pullable permeable brick of the present invention comprises a permeable brick body 1 and an air supply pipe 2. The permeable brick body 1 is made of a refractory material, and the outer portion thereof is wrapped with a steel shell 3, and the lower end of the steel shell 3 is welded to the bottom plate 4, the bottom plate 4 has a certain thickness, the bottom surface of the permeable brick body 1 and the A gas chamber 5 is formed between the bottom plates 4. The outer surface of the permeable brick body 1 has a certain taper. In the working state, the permeable brick body 1 is installed in the mounting hole of the seat brick, and the inner surface of the mounting hole and the outer surface of the permeable brick body 1 are tapered. match. The air supply pipe 2 is connected to the bottom plate 4 in a sealed manner, and the upper end of the air supply pipe 2 is fixedly connected to the air permeable brick body 1 through the air chamber 5 through a reinforcing mechanism, and the air supply pipe 2 is located at the An air hole 6 communicating with the air chamber 5 is formed in a wall of a portion of the air chamber 5.

The reinforcing mechanism comprises: an anchoring plate 7 and an anchor 8; the anchoring plate 7 is fixedly connected to the top end of the air supply pipe 2 by means of splicing or the like, at least a part of the anchoring plate 7 protruding from the air supply pipe 2 In the present embodiment, the anchoring plate 7 is a flat plate having an area larger than the cross-sectional area of the air supply pipe 2; the anchor 8 is fixedly connected to the outer wall of the air supply pipe 1 by welding or the like. .

When the ventilating tile body 1 needs to be pulled out, only a portion of the air supply pipe 2 exposed outside the bottom plate 4 is clamped by a tool, and the pulling force is transmitted to the ventilating brick through the air supply pipe 2 In the refractory material of the body 1, the force-receiving portion is not concentrated on the welded portion between the air supply pipe 2 and the bottom plate 4, and between the bottom plate 4 and the steel casing 3, and the two The weld area of the part is small, and the welding and the falling off phenomenon are obtained. The success rate of the extraction is extremely high, and it can reach about 99.99%. Embodiment 2

* As shown in FIG. 2, it is another embodiment of the pullable permeable brick of the present invention, the basic structure of which is similar to that of the pullable permeable brick of the first embodiment, except that the reinforcing mechanism of the embodiment includes: An open-down sleeve 9 inside the permeable brick body 1 is fixed to an anchoring plate 7 attached to the top end of the sleeve 9, and an anchor 8 fixedly attached to the outer wall of the sleeve 9. In this embodiment, the sleeve 9 has a cylindrical shape, and the sleeve 9 is detachably connected to a portion of the air supply pipe 2 that enters the permeable brick body 1. In the embodiment, the sleeve Inner diameter of 9 and the gas supply pipe 2 The outer wall of the sleeve 9 is formed with an internal thread, and the outer wall of the air supply tube 2 is formed with an external thread that cooperates with the internal thread, through the cooperation of the internal thread and the external thread. The sleeve 9 is detachably and fixedly connected to the air supply pipe 2. In addition, a groove is formed on the cylindrical surface of the sleeve 9, and in this embodiment, a circular annular groove is formed, and the refractory material of the permeable brick body 1 is filled into the W groove to further increase The connecting force of the air supply pipe 1 and the refractory material of the gas permeable brick body 1. The anchoring plate 7 is fixedly connected to the top end of the sleeve 9 by welding or the like, at least a portion of the anchoring plate '7 protruding from the outer wall of the sleeve 9. In the embodiment, the anchoring plate 7 is a flat plate whose area is larger than the cross-sectional area of the sleeve 9; the anchor 8 is fixedly connected to the outer wall of the sleeve 9 by welding or the like. When the ventilating tile body 1 needs to be pulled out, only a portion of the air supply pipe 2 exposed outside the bottom plate 4 is clamped by a tool, and the pulling force is transmitted to the sleeve through the air supply pipe 2 9, further transferred to the refractory material of the permeable brick body 1 such that the stressed portion is not concentrated on the welding between the air supply pipe 1 and the bottom plate 4, and between the bottom plate 4 and the steel casing 3. At the same time, the welding area of the two parts is small, and the welding is performed, and the welding is performed. The success rate of the extraction is extremely high, and it can reach about 99.99%.

In other embodiments, the outer wall of the sleeve 9 of the second embodiment may also form other shapes of grooves ', such as various annular grooves (such as V-shaped grooves) perpendicular to the air supply direction of the air supply pipe 2. , a trough, etc.), various grooves parallel to the gas supply direction, various grooves oblique to the axis of the gas supply pipe, even spiral grooves, etc., as long as the gas supply pipe 2 and the gas permeable brick can be increased The purpose of the connection force between the body 1 refractories may be. In other embodiments, the outer diameter of the sleeve 9 may be matched with the inner diameter of the air supply pipe 2, the outer wall of the sleeve 9 is formed with an external thread, and the inner wall of the air supply pipe 2 is formed with the The externally threaded internal thread is detachably fixedly coupled to the air supply tube 2 by the cooperation of the internal thread and the external thread, as shown in FIG. However, the anchoring plate 7 is fixedly attached to the top end of the sleeve 9 at the same time. In other embodiments, the anchoring plate 7 or the anchor 8 may be provided with one of them to increase The object of the present invention can also be achieved by adding the connection force of the gas supply pipe 2 to the refractory material of the gas permeable brick body 1. The anchoring plate 7 may also be at least a portion of a bent plate or the like protruding from the air supply pipe 2 or the outer wall of the sleeve 9, as long as the air supply pipe 2 and the air permeable brick can be increased. The purpose of the connection force of the body 1 refractory material may be.

Of course, in other embodiments, the air supply pipe 2 may not be fixedly connected to the permeable brick body 1 by the reinforcing mechanism, but directly utilizes the air supply pipe 2 extending into the interior of the permeable brick body 1. The frictional force between the outer surface and the surface of the refractory material can also enhance the connection force of the gas supply pipe 1 and the refractory material of the gas permeable brick body 1 to a certain extent, and improve the success rate of the extraction.

It is to be understood that the above-described embodiments are merely illustrative of the embodiments and are not intended to limit the embodiments. Other variations or modifications of the various forms can be made by those skilled in the art based on the above description. There is no need and no way to exhaust all implementations. Obvious changes or variations resulting therefrom are still within the scope of the invention.

Claims

Claim

1. A pullable permeable brick, comprising:

a permeable brick body (1), a bottom plate (4) is disposed at a bottom of the permeable brick body (1), and a gas chamber is formed between a bottom surface of the permeable brick body (1) and the bottom plate (4) (5) );

An air supply pipe (2) having an upper end communicating with the air chamber (5) through the bottom plate (4), and a sealing connection between the air supply pipe (2) and the bottom plate (4);

It is characterized by:

The upper end of the gas supply pipe (2) is fixedly connected to the gas permeable brick body (1) through the gas chamber (5), and the gas supply pipe (2) is located in a part of the gas chamber (5) A pore (6) communicating with the gas chamber (5) is formed on the wall.

2. The pullable permeable brick according to claim 1, wherein: the air supply pipe (1) is fixedly connected to the permeable brick body (1) by a reinforcing mechanism.

3. The pullable permeable brick according to claim 2, wherein: the reinforcing mechanism comprises an anchoring plate (7) fixedly connected to a top end of the air supply pipe (2), the anchoring plate (7) At least a portion protrudes from an outer wall of the air supply pipe (2).

The pullable permeable brick according to claim 2 or 3, characterized in that the reinforcing mechanism further comprises an anchor (8) fixedly connected to the outer wall of the air supply pipe (2).

5. The pullable permeable tile according to claim 2, wherein: the reinforcing mechanism comprises an open-down sleeve (9) disposed inside the permeable brick body (1); The sleeve (9) is detachably connected to a portion of the air supply pipe (2) that enters the permeable brick body (1).

6. The pullable permeable brick according to claim 5, characterized in that: the inner diameter of the sleeve (9) cooperates with the outer diameter of the air supply pipe (2), and the inner wall of the sleeve (9) An internal thread is formed, and an outer wall of the air supply pipe (2) is formed with an external thread that cooperates with the internal thread.

7. The pullable permeable tile according to claim 6, wherein: the reinforcing mechanism further comprises an anchor (8) fixedly connected to an outer wall of the sleeve (9); the sleeve (9) Outer wall Grooves are also formed.

8. The pullable permeable brick according to claim 5, wherein: an outer diameter of the sleeve (9) is matched with an inner diameter of the air supply pipe (2), and an outer wall of the sleeve (9) An external thread is formed, and an inner wall of the air supply pipe (2) is formed with an internal thread that cooperates with the external thread.

The pullable permeable brick according to any one of claims 5-8, wherein: the reinforcing mechanism further comprises an anchoring plate (7) fixedly attached to the top end of the sleeve (9), At least a portion of the anchoring plate (7) protrudes from the outer wall of the sleeve (9).

10. The pullable permeable brick according to claim 1, wherein: the outer portion of the permeable brick body (1) is wrapped with a steel shell (3), a lower end of the steel (3) and the bottom plate ( 4) Fixed connection.