CN210254214U

CN210254214U - Easy-to-pour brick double-core integral air brick

Info

Publication number: CN210254214U
Application number: CN201920915396.0U
Authority: CN
Inventors: 丁金星; 崔庆阳; 高耸; 赵继增; 谢国锋; 李玉香; 张春杰; 侯耀仲; 赵保群; 郭东方
Original assignee: Luoyang Lier Refractory Materials Co Ltd
Current assignee: Luoyang Lier Functional Materials Co.,Ltd.
Priority date: 2019-06-13
Filing date: 2019-06-13
Publication date: 2020-04-07
Anticipated expiration: 2029-06-13

Abstract

The utility model relates to an iron and steel smelting auxiliary equipment field, specific whole air brick of easy brick twin-core that falls that says so. The air brick comprises a brick cup and a first air brick core and a second air brick core which are distributed in the brick cup at intervals, wherein the first air brick core is a full-through brick core; the second air brick includes the buffer layer that full penetrating brick core main part and airtight and can be corroded the loss by molten steel erosion, and the going up of brick core main part is along distributing in the below of brick cup upper surface, and the buffer layer interval sets up the top position at brick core main part, and the cavity between buffer layer and the brick core main part forms the cushion chamber. The utility model discloses can guarantee that the ladle rotates the air brick core under the state that does not stop to can improve the efficiency of rotating the brick core and blow through the rate.

Description

Easy-to-pour brick double-core integral air brick

Technical Field

The utility model relates to an iron and steel smelting auxiliary equipment field, specific whole air brick of easy brick twin-core that falls that says so.

Background

The ladle bottom argon blowing air brick is an important functional element for ladle external refining, inert gases such as argon and the like are introduced into molten steel from the bottom of a ladle through an air passage in the air brick, and bubbles float upwards to stir the molten steel so as to achieve the purposes of removing impurities in the molten steel and homogenizing the components and the temperature of the molten steel. The air brick is classified into an integral air brick and a split air brick according to an assembling mode, the safety of the integral air brick is high, but a steel ladle is required to be stopped to replace the air brick after an air brick core is used below a safe height. The split bricks can realize the thermal replacement of the air brick cores under the condition of not stopping the steel ladle, and the normal operation of the steel ladle is not influenced, but the replacement mode is greatly influenced by manual operation, and the safety is obviously inferior to that of the integral air brick. At present, the prior art develops the double-core integral air brick, and simultaneously has the advantages of the safety of the integral air brick and the hot-state replacement of the air brick core of the split air brick.

Patent document No. 200420089113.5 discloses an improved integral air brick, which has two air brick cores installed in a brick cup, the two brick cores are higher and lower, the upper surface of the higher brick core is directly contacted with molten steel, and the upper surface of the lower brick core is covered by the brick cup. The high brick core is firstly used, and the high brick core can be switched to another brick core to blow argon under the condition of not using the ladle to a certain extent, so that the ladle can be continuously used. However, the double-core integral brick with the structure has the condition of difficult brick pouring, when the high brick core is changed to the low brick core for use, the seat brick pre-embedded layer on the low brick core cannot be synchronously corroded and peeled off, so the brick core is still covered by the seat brick, an operator is difficult to determine the exact position of the low brick core, the seat brick material and the brick core material are sintered together in the high-temperature use process, the sintered layer needs to be completely burnt and corroded by oxygen to reach the required ventilation amount when the brick is poured, and the labor efficiency of the operator and the service life of the air brick are not good.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an easily fall whole air brick of brick double-core can guarantee that the ladle is changeed the air brick core under the state that does not stop to can improve the efficiency of changing the brick core and blow through the rate.

In order to solve the technical problem, the utility model discloses a technical scheme be: an easily-toppled brick double-core integral air brick comprises a brick cup and a first air brick core and a second air brick core which are distributed in the brick cup at intervals, wherein the first air brick core is a full-through brick core; the second air brick includes the buffer layer that full penetrating brick core main part and airtight and can be corroded the loss by molten steel erosion, and the going up of brick core main part is along distributing in the below of brick cup upper surface, and the buffer layer interval sets up the top position at brick core main part, and the cavity between buffer layer and the brick core main part forms the cushion chamber.

Preferably, the upper edges of the first gas brick core and the buffer layer are uniformly distributed above the upper surface of the brick cup.

Preferably, the distance between the upper edge of the first air brick core and the upper edge of the buffer layer and the upper surface of the brick cup is 0-30 mm.

Preferably, the height of the buffer layer is 10-50 mm.

Preferably, the height of the buffer chamber is 5-30 mm.

Preferably, the distance between the first and second gas permeable brick cores is 100-400 mm.

Preferably, the buffer layer is made of corundum-mullite material convenient for oxygen burning and cleaning; the brick core main bodies of the first air brick core and the second air brick core are made of corundum spinel materials.

Advantageous effects

The utility model discloses well second air brick core's brick core main part top is equipped with the buffer layer, and the buffer layer can gradually erode the loss at the molten steel scouring in-process to the brick core main part of second air brick core is not eroded before effectively protecting falling the brick. And the buffer layer can be tamped or burnt by an oxygen lance so that the brick core main body of the second air brick core can rapidly have argon blowing conditions.

A buffer cavity is arranged between the brick core main body of the second air brick core and the top buffer layer. The buffer layer and the brick core main body can be prevented from being sintered together by the buffer cavity in the high-temperature use process of the air brick. Therefore, in the process of switching the first air brick core to the second air brick core, the air passage of the brick core main body of the second air brick core is convenient to expose more directly, and the efficiency of switching the brick core is improved.

Drawings

Fig. 1 is a schematic sectional structure of the present invention;

the labels in the figure are: 1. brick cup, 2, first gas permeable brick core, 3, second gas permeable brick core, 301, buffer layer, 302, buffer chamber, 303, brick core main part.

Detailed Description

As shown in figure 1, the utility model discloses an easily fall whole air brick of brick twin-core, including brick cup 1 and interval distribution first air brick core 2 and second air brick core 3 in brick cup 1.

The first air brick core 2 positioned on the left side is a full-through brick core, and the upper edge of the first air brick core is distributed above the upper surface of the brick cup 1. The second gas permeable brick on the right side comprises a fully permeable core body 303 and a buffer layer 301 which is gas impermeable and can be eroded by molten steel erosion. The last edge of brick core main part 303 distributes in the below of brick cup 1 upper surface, and buffer layer 301 interval sets up the top position at brick core main part 303, and the cavity between buffer layer 301 and the brick core main part 303 forms cushion chamber 302, and the last edge of buffer layer 301 distributes in the top of brick cup 1 upper surface. The upper edge of first air brick core 2 and the interval between the upper edge of buffer layer 301 and the brick cup 1 upper surface are 10mm, (in the utility model discloses an in other embodiments, the upper edge of first air brick core 2 and the upper edge of buffer layer 301 also can with brick cup 1 upper surface parallel and level or concave in the upper surface of brick cup 1, the distance is 0-30 mm), the height of cushion chamber 302 is 10mm, the height of buffer layer 301 is 30 mm.

Inside ventilative passageway that all is equipped with of brick core main part 303 of first air brick core 2 and second air brick core 3, the material is the corundum spinel material. The structure of the ventilation channel is slit type, dispersion type, plate splicing type or ceramic rod through hole type; the molding process is casting molding or machine pressing molding. The brick cup 1 can be designed into a rectangle or a cylinder according to the requirements of steel ladle masonry, the material is corundum spinel, and the forming process is pouring forming or machine pressing forming. The distance between the first air brick core 2 and the second air brick core 3 is 100-400 mm. The buffer layer 301 is made of corundum-mullite material convenient for oxygen burning and cleaning.

The utility model discloses use full penetrating first air brick core 2 to blow argon earlier at the during operation, when using to safe standard, need stop using first air brick core 2 and switch to second air brick core 3. The air duct is first switched to the tail of the lower end of the second air brick core 3. At the moment, in an ideal state, the buffer layer 301 on the upper part of the second air brick core 3 is completely flushed by molten steel to expose the brick core main body 303, and then direct ventilation production can be carried out; if the end part of the brick core main body 303 is not blackened after ventilation, the brick core main body 303 is not exposed, and at the moment, the buffer layer 301 can be smashed or burnt by an oxygen lance, so that the brick core main body 303 of the second air-permeable brick core 3 can have the argon blowing condition, and the brick core replacing efficiency is improved.

Claims

1. The utility model provides an easily fall whole air brick of brick twin-core, includes brick cup (1) and interval distribution first air brick core (2) and second air brick core (3) in brick cup (1), its characterized in that: the first air brick core (2) is a full-through brick core; the second air brick includes full penetrating brick core main part (303) and ventilative and can be corroded buffer layer (301) of loss by molten steel erosion, and the last edge of brick core main part (303) distributes in the below of brick cup (1) upper surface, and buffer layer (301) interval sets up the top position in brick core main part (303), and buffer layer (301) and the cavity formation cushion chamber (302) between brick core main part (303).

2. The easy-to-pour brick double-core integral air brick according to claim 1, characterized in that: the upper edges of the first air brick core (2) and the buffer layer (301) are uniformly distributed above the upper surface of the brick cup (1).

3. The easy-to-pour brick double-core integral air brick according to claim 1, characterized in that: the distance between the upper edge of the first air brick core (2) and the upper edge of the buffer layer (301) and the upper surface of the brick cup (1) is 0-30 mm.

4. The easy-to-pour brick double-core integral air brick according to claim 1, characterized in that: the height of the buffer layer (301) is 10-50 mm.

5. The easy-to-pour brick double-core integral air brick according to claim 1, characterized in that: the height of the buffer cavity (302) is 5-30 mm.

6. The easy-to-pour brick double-core integral air brick according to claim 1, characterized in that: the distance between the first air brick core (2) and the second air brick core (3) is 100-400 mm.

7. The easy-to-pour brick double-core integral air brick according to claim 1, characterized in that: the buffer layer (301) is made of corundum-mullite material convenient for oxygen burning and cleaning; the brick core main bodies (303) of the first air brick core (2) and the second air brick core (3) are both made of corundum spinel materials.