KR20180080465A - Brick assembly and ladle comprising the same - Google Patents

Abstract

Provided is a brick assembly having a portion of an interior material coming in contact with molten steel in a ladle accommodating the molten steel, which comprises: a plurality of display bricks stacked in the first direction perpendicular to the ground; and erosion bricks coupled to the display bricks so as to cover at least a portion of a first boundary, which is a boundary between the display bricks, from the molten steel and exposed to the inside of the ladle so as to be gradually eroded by the molten steel in the direction facing toward the display bricks from the inside of the ladle. Accordingly, predetermined remaining thickness of the interior material can be easily grasped with naked eyes.

Description

BRICK ASSEMBLY AND LADLE COMPRISING THE SAME < RTI ID = 0.0 >

The present invention relates to brick assemblies and ladders comprising the same that form part of the lining in ladders that contain molten steel.

The ladle is a structure that receives molten steel for refining molten steel or transporting molten steel. FIG. 1 is a cross-sectional view schematically showing a state before use of lasers, and FIG. 2 is a cross-sectional view schematically showing a state after use of lasers.

The ladles may comprise a molten steel 1 contained therein and an interior material 10 in direct contact with the slag 2. The enlarged view of FIG. 1 shows a brick used for constructing the interior material 10, and the interior material 10 can be constructed by laminating the bricks combined after the basic brick B is bonded.

The interior material 10 is a structure that can not be used permanently because it directly contacts the molten steel 1 and the slag 2. [ As the working conditions and the number of times of use increase, erosion and damage occur from the side of the molten steel and the thickness gradually decreases (see FIG. 2). Therefore, it is necessary to replace the interior material 10 when some damage occurs.

Conventionally, in order to directly check the remaining thickness of the lining material in the case that the lacquer is not in normal use form or a specific matter is generated, the lace is cooled to a temperature at which the thickness of the lining material can be measured after stopping the use of the lace, Were measured. After that, I would raise the temperature of the lasers again to use the lasers. However, repetitive cooling and heating operations have resulted in physical and chemical changes of the interior materials, shortening the life of the interior materials,

In addition, when lasers were used normally, the life of the luminaire was roughly measured visually, depending on the experience of the operator. However, such a method has a problem of poor measurement accuracy, and it is possible to measure the remaining thickness of the interior material by using a laser, but it is not yet used in ladle equipments because of high installation cost.

An object of the present invention is to provide a brick assembly and a ladies including the brick assembly, which can easily grasp the specified remaining thickness of the lining even when the ladle is in use with only the naked eye.

In one example, a brick assembly that constitutes a portion of an interior material in contact with molten steel in ladles that contain molten steel has a plurality of display bricks stacked in a first direction perpendicular to the paper surface, and a first boundary And an erosion brick which is coupled to the display bricks so as to cover at least a part of the molten steel from the molten steel and is gradually eroded by the molten steel along the erosion direction which is exposed to the inside of the lays and is directed from the inside of the lays toward the display bricks.

In another example, the display bricks may be indicative of the marginal life of the lumber, as the first boundary that the erosion brick was covering was exposed to the inside of the ladders by erosion of the erosion bricks.

In another example, each of the display bricks is formed in a shape elongated in a second horizontal direction to the ground, and the erosion bricks are elongated in the direction toward the inside of the ladders at the faces facing the inside of the lattices of the display bricks As shown in FIG.

In another example, each of the display bricks includes a body portion formed in a shape elongated in a second direction horizontal to the ground, and protrusions formed in a shape extending in opposite directions of the erosion direction at both ends of the body portion, The erosion bricks may be formed to be inserted into an inner space defined by the body portions and protrusions of the display bricks stacked in the first direction.

In another example, the first boundary, which is shown in the second direction between the display bricks, is a second boundary between the protrusions of the display bricks stacked in the first direction and the erosion brick inserted in the inner space, The boundary can be recognized more clearly.

In another example, the display bricks may be easier to expand in a first direction than in a second direction if they are installed inside the ladle as part of the lining.

In another example, the display bricks and erosion bricks may be joined together by a bonding agent comprising magnesia or alumina.

In another example, the ladies that contain molten steel include an inner lining in contact with the molten steel and an inner lining surrounding the lining, the lining comprising a plurality of horizontally extending bodies each having a plurality of vertically stacked bodies A display brick and a brick assembly coupled to the display bricks and having an erosive brick that is exposed to the molten steel and gradually eroded by molten steel, covering at least a portion of the first boundary, which is a boundary between the body portions of the display bricks, .

In another example, the display bricks may be indicative of the marginal longevity of the lining as the first boundary that the erosion brick was covering is exposed to the interior of the lining by erosion of the eroding bricks.

According to the present invention, the erosion brick is eroded and the first boundary between the display bricks is exposed, so that the remaining thickness of the interior material can be confirmed.

Further, according to the present invention, since the first boundary appears more clearly than the other boundaries between the bricks, the remaining thickness of the interior material can be easily confirmed only by the naked eye.

1 is a cross-sectional view schematically showing a state before use of lasers.
2 is a cross-sectional view schematically showing a state after use of lasers.
3 is a perspective view showing a brick assembly according to Embodiment 1 of the present invention.
4 is a partial perspective view showing a state before use of the ladies including the brick assembly according to the first embodiment of the present invention.
Fig. 5 is a partial perspective view showing the ladle including the brick assembly according to the first embodiment of the present invention during use or after use. Fig.
6 is an exploded perspective view showing a brick assembly according to a second embodiment of the present invention.
7 is a partial perspective view showing a state before use of lattices including a brick assembly according to Embodiment 2 of the present invention.
FIG. 8 is a partial perspective view showing the state of the ladle including the brick assembly according to the second embodiment of the present invention during use or after use. FIG.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the understanding of the embodiments of the present invention.

Example  One

1 is a cross-sectional view schematically showing a state before use of lasers. 2 is a cross-sectional view schematically showing a state after use of lasers. 3 is a perspective view showing a brick assembly according to Embodiment 1 of the present invention. Hereinafter, the ladle according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG.

The ladle according to the first embodiment of the present invention includes an interior material 10 and a steel plate 40. Between the inner material 10 and the steel plate 40, a semi-permanent sheet 20 and a permanent sheet 30 serving as a heat insulating material may be further provided. The ladies receive the molten steel 1 therein for refining the molten steel or transporting the molten steel.

First, the liner 10 can form the innermost walls of the laces. The interior material 10 forms a space for accommodating the molten steel 1 therein, and contacts the molten steel 1 and the slag 2. As it is in direct contact with molten steel 1 and slag 2, it can be gradually eroded with the use of lasers as described below (see FIG. 2). In order to prevent the molten steel 1 from leaking out of the inner material 10 due to the erosion of the inner material 10, the inner material 10 needs to be replaced when it is damaged to some extent.

On the outside of the interior material 10, a semi-permanent interior 20 may surround the interior material 10. The semi-permanent sheet 20 can prevent molten steel 1 from leaking out of the ladles while preventing heat loss due to temperature drop. Unlike the interior material 10, the semi-permanent furniture can be used semi-permanently without being replaced every time.

The steel plate 40 may surround the lining 10 and the semi-permanent field 20 and form the outermost walls of the lattices. Between the steel plate (40) and the semi-permanent field (20), a permanent field (30) serving as a heat insulating material is interposed, so that heat loss can be minimized. The permanent field 30 may be used semi-permanently, such as the semi-permanent field 20.

Thus, the ladles can be semi-permanently used while accommodating the molten steel 1 therein and replacing only the damaged interior material 10 in use. However, it is necessary to determine when it is economical and efficient to replace the interior material 10.

The interior material 10 is constructed by sequentially stacking a plurality of bricks. After the base bricks B as shown in the enlarged view of Fig. 1 are joined horizontally and horizontally to the ground according to the shape of the ladles, the base bricks B thus combined are laminated to form the lining 10 have. For example, if the laths are circular, the base bricks B are joined in a horizontal direction to form a single box, and the formed box is stacked to form the interior 10.

At this time, the ladle according to the first embodiment of the present invention includes the brick assembly 100 according to the first embodiment of the present invention between a plurality of base bricks (B). At least one brick assembly 100 may be included in each layer constituting the interior material 10 and all of the interior material 10 may be composed of the brick assembly 100. [ The location or ratio of the brick assembly 100 is not particularly limited.

Hereinafter, the brick assembly 100 according to the first embodiment of the present invention will be described in more detail with reference to FIG. A brick assembly 100 according to embodiment 1 of the present invention includes a plurality of display bricks 110 and an erosive brick 120 coupled to the display bricks 110.

The plurality of display bricks 110 are stacked in a first direction I perpendicular to the paper. The number of the display bricks 110 stacked is not particularly limited. The height a of each of the display bricks 110 along the first direction I is also not particularly limited and each display brick 110 may have a different height. In addition, the height of the brick assembly 100 in which the respective display bricks 110 are laminated can be freely adjusted. This height corresponds to the height of the plurality of basic bricks B and can be a height at which no step is generated when the brick assembly 100 is joined with the basic bricks B. [

Each of the display bricks 110 is formed in a shape elongated in a second horizontal direction II on the ground and a boundary 115 between the display bricks 110 is formed in a shape of wave, saw tooth, As shown in FIG. The width (b) along the second direction (II) of each of the display bricks (110) is not particularly limited. However, each of the display bricks 110 may preferably have the same width but may have different widths

At this time, a first boundary 115 appears between each of the display bricks 110 stacked. For example, if three display bricks 110 are stacked as shown in FIG. 3, one or more first boundaries 115 may appear.

The erosion bricks 120 are joined to the display bricks 110 so as to cover at least a portion of the first boundary 115 from the molten steel. Covering from molten steel means that the erosion bricks 120 are bonded to the display bricks 110 and exposed to the inside of the lasers so that the first boundary 115 is not visible when the display bricks 110 are viewed from the molten steel side do.

For example, as shown in FIG. 3, the display bricks 110 may be formed in a shape elongated in the direction toward the inside of the lays at the faces facing the inside of the lattices of the display bricks 110. The erosion brick 120 may preferably have a height corresponding to the height c of the brick assembly 100 and the width b of the display brick 100 at a portion coupled with the display bricks 110, So that erosion brick 120 covers all of first border 115. In this case,

When the brick assembly 100 formed by combining the plurality of display bricks 110 and the erosion bricks 120 is included in a part of the interior material 10, the erosion of the erosion bricks 120 causes the first boundary The display bricks 110 may display the marginal life of the lumber 10 as the lumber 115 is exposed. This will be described in more detail below.

4 is a partial perspective view showing a state before use of the ladies including the brick assembly 100 according to the first embodiment of the present invention. 5 is a partial perspective view showing the in-use or post-use status of the lattices including the brick assembly 100 according to the first embodiment of the present invention. 4 and 5, the erosion bricks 120 are gradually eroded by molten steel along the erosion direction E, which is the direction from the inside of the laths toward the display bricks 110. As shown in Fig.

As shown in Fig. 4, the faces facing the inside of the lattices of the erosion bricks 120 can be seen along the erosion direction E, i.e., when the lumber 10 is viewed from molten steel, prior to use of the lasers. The erosion bricks 120, which are in contact with molten steel according to the use of the lakes, are gradually eroded along the erosion direction E by the heat of the molten steel.

When the erosion bricks 120 disappear to the position where the display bricks 110 are located, the display bricks 110 can gradually be exposed as shown in Fig. At this time, the first boundary 115 covered by the erosion brick 120 may be exposed to the inside of the lasers by the erosion of the erosion brick 120, and the user grasps the exposure of the first boundary 115 with the naked eye It can be confirmed that the replacement time of the interior material 10 has come.

The marginal life of the interior material 10 can be set through the width length d in accordance with the erosion direction E of each display brick 110. The display bricks 110 will quickly indicate that the longer the width length d, the more the marginal life is reached. It may be preferable to appropriately adjust the width length d so that the interior material is eroded and the molten steel is prevented from flowing out of the interior material 10 but the interior material 10 can be used and replaced as long as possible. For example, the width length d can be adjusted to 100 mm or less.

The first boundary 115 can be more clearly visible than the vertical boundary V between the display bricks 110 and the base brick B coupled along the second direction. When the inner material 10 is heated by the molten steel, each of the bricks is expanded, and the boundary between the bricks can be marked by the expansion of the bricks.

The reason why the first boundary 115 is sharper than the vertical boundary V is as follows.

First, the inner material 10 is constrained in the second direction II in the ladle, while the first direction I is fixed by the steel structure flange F on the upper part of the ladle, (See Fig. 1).

Further, since the number of bricks coupled in the second direction (II) is relatively larger than the number of bricks stacked in the first direction (I), each brick is provided inside the ladle as a part of the interior material It tends to expand in one direction (I) and may be difficult to expand in the second direction (II). Therefore, the first boundary 115 formed along the second direction II may appear more clearly than the vertical boundary V formed along the first direction I.

That is, only the surface of the erosion brick 120 is visible before use, and when the interior material 10 reaches the end of its life, the first boundary 115 is clearly visible, so that the appearance of the first boundary 115 can be grasped visually only have. Since the appearance of the first boundary 115 is visible to the naked eye even during use of the lasers, the use of the lasers may be stopped, and the lasers may not be cooled and then heated again.

At this time, each of the display bricks 110 may be bonded to each other by a bonding agent containing magnesia or alumina, which is the same material as the material of the interior material. The first boundary 115 may appear more prominently when the first boundary 115 is first damaged or the molten steel or foreign matter penetrates into the first boundary 115 .

Further, the display bricks 110 and the erosion bricks 120 may be bonded to each other by a bonding agent containing magnesia or alumina. During use of the laths, the erosion bricks 120 expands, and when the display bricks 110 and erosion bricks 120 are joined together by a joining agent comprising magnesia or alumina, the joining agent sintered and shrunk, It is possible to prevent damage due to the expansion of the bricks 120.

Further, since the joint strength between the display bricks 110 and the erosion bricks 120 is excellent, the display bricks 110 and the erosion bricks 120 do not fall off even when the bricks are assembled or delivered Do not.

Further, when the high-purity magnesia or alumina excellent in sintering, shrinkage and corrosion resistance is contained, it is possible to more easily prevent the slag or the molten steel from penetrating into the joint portion.

Example  2

6 is an exploded perspective view showing a brick assembly according to a second embodiment of the present invention. The ladle according to the second embodiment of the present invention differs in the shape of the ladle and brick assembly according to the first embodiment. Hereinafter, the brick assembly 200 according to the second embodiment of the present invention will be described with reference to FIG.

Each of the display bricks 210 constituting the brick assembly 200 according to Embodiment 2 of the present invention may include a body portion 211 and protrusions 213. [

The body portion 211 may be formed in a shape elongated in a second direction (II) horizontal to the ground. The protrusions 213 may be formed at both ends of the body 211 in a shape extending in the direction opposite to the erosion direction E, respectively. That is, the body portion 211 and the protruding portion 213 may be integrally formed in a "C" shape.

The width e of the protruding portion 213 along the second direction II is not particularly limited. The width b 'along the second direction II of the entire display block 210 formed by the body 211 and the protrusion 213 is also not particularly limited.

6, a first boundary 215 may appear between the display bricks 210 in the second direction II, although not explicitly shown in FIG. The first boundary 215 may be formed horizontally on the ground surface or the assembled interface 215 of the body portions 211 formed to extend in the second direction II may have a shape such as wave, saw tooth, taper, .

The erosion bricks 220 are formed to be inserted into the inner space 216 defined by the body portion 211 and the protrusions 213 of the display bricks 210 stacked in the first direction I . The height h of the erosion brick 220 along the first direction I and the width g of the erosion brick 220 along the second direction II and the width h of the erosion direction E correspond to the inner space 216 It can have an insertable size. However, the erosion bricks 220 may not necessarily be inserted into the inner space 216 closely.

A second boundary 218 is formed in the first direction I between the protruding portions 213 of the display bricks 210 stacked in the first direction I and the erosion brick 220 inserted in the inner space 216. [ (See FIG. 7). The inner material 10 is constrained in the second direction II in the ladle while the first inner material I is fixed by the flange F on the top of the ladle in the first direction I, 1), the number of bricks coupled in the second direction (II) may be relatively larger than the number of bricks stacked in the first direction (I). Accordingly, when the display bricks 210 and the erosion bricks 220 are installed on the inner side of the ladle as a part of the interior material 10, they may be easier to expand in the first direction I than in the second direction II, 1 boundary 215 can be recognized more clearly than the second boundary 218. [

It is thus easier to assemble the brick assembly 200 when each of the display bricks 210 has a shape defining the inner space 216 and the erosion bricks 220 are inserted into the inner space 216 And the combination of the erosion bricks 220 and the display bricks 210 can be made more rigid.

The display bricks 210 and the erosion bricks 220 may be bonded together by a bonding agent containing magnesia or alumina, and the display bricks 210 and the erosion bricks 220 may be bonded to each other by a bonding agent containing magnesia or alumina. .

7 is a partial perspective view showing the state before use of the ladies including the brick assembly 200 according to the second embodiment of the present invention. 8 is a partial perspective view showing the in-use or post-use condition of the lattices including the brick assembly 200 according to the second embodiment of the present invention.

As shown in FIG. 7, the surfaces facing the inside of the ladle of the protruding portion 213 and the surface inserted into the inner space 216, when viewed along the erosion direction E, that is, when the lumber 10 is viewed from the molten steel, And the second boundary 218 can be seen. ≪ RTI ID = 0.0 > [0040] < / RTI > The erosion bricks 220 and the projections 213, which are in contact with molten steel according to the use of the lakes, are gradually eroded along the erosion direction E by the heat of the molten steel.

When the erosion bricks 220 disappear to the position where the display bricks 210 are located, the display bricks 210 can gradually be exposed as shown in Fig. At this time, the first boundary 215 covered by the erosion bricks 220 may be exposed to the inside of the lasers by the erosion of the erosion bricks 220, and the user grasps the exposure of the first boundary 215 with the naked eye It can be confirmed that the replacement time of the interior material 10 has come.

That is, before use, the second boundary 218 between the erosion bricks 220 and the protrusion 213 and the disconnected first boundary 215 of the protrusions 213 are visible, and if the interior material 10 reaches the end of its life, Since the boundaries 215 are connected to each other and are long and clear, the change of the first boundary 215 can be clearly grasped only by the naked eye. Since the appearance of the first boundary 215 is visible to the naked eye even during use of the lasers, the use of the lasers may be discontinued and the lasers may not be cooled and then heated again.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

1: molten steel
2: Slag
10: Interior material
20: Semi permanent place
30: Permanent chapter
40: iron plate
100: Brick assembly
110: Display bricks
115: First boundary
120: erosion brick
200: Brick assembly
210: Display bricks
211:
213:
215: first boundary
216: inner space
218: 2nd boundary
220: erosion brick
B: Basic brick
E: erosion direction
F: Flange
V: vertical boundary
I: First direction
II: second direction

Claims (9)

A brick assembly comprising a portion of an interior material in contact with the molten steel in a ladle containing molten steel,
A plurality of display bricks stacked in a first direction perpendicular to the paper; And
Wherein the display bricks are joined to the display bricks so as to cover at least a part of the first boundary, which is a boundary between the display bricks, from the molten steel, and are exposed to the inside of the lattices to follow the erosion direction in the direction from the inside to the display bricks And an erosive brick that is gradually eroded by the molten steel. The method according to claim 1,
Wherein the display bricks display the marginal life of the interior material as the first boundary that the erosive brick covers is exposed to the inside of the ladders by erosion of the erosion bricks. The method according to claim 1,
Each of the display bricks is formed in a shape elongated in a second horizontal direction on the ground,
Wherein the erosion bricks are formed in a shape elongated in a direction toward the inside of the lays at the surfaces facing the inside of the lattices of the display bricks. The method according to claim 1,
Each of the display bricks includes a body portion formed in a shape elongated in a second horizontal direction on the ground surface and protrusions formed at both ends of the body portion in a shape extending in a direction opposite to the erosion direction,
Wherein the erosion bricks are formed to be inserted into an inner space defined by the body portion and the protrusions of the display bricks stacked in the first direction. The method of claim 4,
Wherein the first boundary between the display bricks in the second direction is formed in the first direction between the protrusions of the display bricks stacked in the first direction and the erosion bricks inserted in the inner space, A brick assembly that is perceived more clearly than a second boundary, which is an emerging boundary. The method of claim 4,
Wherein the display bricks are more likely to expand in the first direction than in the second direction when installed inside the ladle as part of the lining. The method according to claim 1,
Wherein the display bricks and the erosion bricks are bonded to each other by a bonding agent containing magnesia or alumina. As a ladle for receiving molten steel,
An inner material in contact with the molten steel; And
And an iron plate surrounding the interior material from the outside,
Wherein the interior material comprises a plurality of display bricks each including a body extending in a horizontal direction and stacked in a vertical direction and a plurality of display bricks coupled to the display bricks, And a brick assembly having an erosive brick that is at least partially covered from the molten steel and exposed to the molten steel side and gradually eroded by the molten steel. The method of claim 8,
Wherein the display bricks indicate the marginal life of the interior material as the first boundary covered by the eroded brick is exposed to the interior of the interior material by erosion of the erosion brick.

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