KR101175626B1 - Ladle and construction method of refractories for ladle - Google Patents
Ladle and construction method of refractories for ladle Download PDFInfo
- Publication number
- KR101175626B1 KR101175626B1 KR1020100073121A KR20100073121A KR101175626B1 KR 101175626 B1 KR101175626 B1 KR 101175626B1 KR 1020100073121 A KR1020100073121 A KR 1020100073121A KR 20100073121 A KR20100073121 A KR 20100073121A KR 101175626 B1 KR101175626 B1 KR 101175626B1
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- South Korea
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- refractory
- ladle
- molten steel
- wall
- permanent field
- Prior art date
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Ceramic Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
Abstract
The present invention is disposed on the first refractory and the concave portion, which is disposed on the bottom and the outer shell, which is formed on the wall and the bottom, and the one portion is formed more concave than the periphery, so as to form a receiving space of the molten steel, A method for constructing ladles and ladle refractories comprising a second refractory and a third refractory formed to cover the first refractory and the second refractory having different characteristics from the first refractory.
Description
The present invention relates to a ladle and ladle refractory construction method for receiving molten steel in a steelmaking furnace in a continuous casting process and supplying to the tundish.
In general, a continuous casting machine is a facility for producing slabs of a constant size by receiving a molten steel produced in a steelmaking furnace and transferred to a ladle in a tundish and then supplying it as a mold for a continuous casting machine.
The continuous casting machine includes a ladle for storing molten steel, a continuous casting machine mold for cooling the tundish and the molten steel discharged from the tundish to form a casting having a predetermined shape, and a casting formed in the mold connected to the mold. It includes a plurality of pinch roller to move.
In other words, the molten steel tapping out of the ladle and tundish is formed of a slab (Slab) or bloom (Bloom), billet (Billet), etc. having a predetermined width and thickness in the mold is transferred to the next process.
It is an object of the present invention to provide a ladle and ladle refractories construction method which can reduce the refractory dropout of unnecessary parts during the refractory replacement of the ladle bottom.
Ladle according to an embodiment of the present invention for realizing the above object is disposed on the bottom, and the outer shell, consisting of a wall and the bottom, to form a receiving space of the molten steel, a portion is formed in the recess than the periphery And a second refractory disposed on the first refractory and the concave portion, the second refractory having different characteristics from the first refractory and formed to cover the first refractory and the second refractory. have.
The concave portion may correspond to the center of the bottom, and may be formed on the first refractory.
The first refractory may include an amorphous refractory.
The first refractory may include a castable.
The second refractory may include a refractory lead.
The second refractory may include one having a greater impact resistance than the first refractory.
The second refractory may include an alumina material.
Ladle refractory construction method according to an embodiment of the present invention for realizing the above object is the step of building a permanent field on the bottom and the inner wall surface of the shell, and the first refractory on the permanent field corresponding to the floor Accumulating the second refractory, constructing a second refractory having a smaller area than the first refractory of the first refractory, and filling the first refractory around the second refractory in correspondence with the height of the second refractory; And putting the third refractory to cover the first and second refractory materials.
The first refractory may include an amorphous refractory.
The first refractory may include a castable.
The second refractory may include one having a greater impact resistance than the first refractory.
The second refractory may include an alumina material.
According to the ladle and ladle refractory construction method according to the present invention configured as described above, when replacing the refractory of the ladle bottom, it is possible to reduce the falling off of the refractory of the unnecessary portion, there is an effect that the replacement operation is easy.
1 is a conceptual diagram for explaining a continuous casting machine mainly on the flow of molten steel (M).
2 is a cross-sectional view schematically showing the configuration of a ladle according to an embodiment of the present invention.
3 is a flowchart illustrating a ladle refractories construction method according to an embodiment of the present invention.
4A to 4E are schematic views illustrating a construction form sequentially according to the construction order to explain the ladle refractory construction method according to an embodiment of the present invention.
Hereinafter, a ladle and a ladle refractories construction method according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the present specification, different embodiments are given the same or similar reference numerals for the same or similar configurations, and the description thereof is replaced with the first description.
1 is a conceptual diagram for explaining a continuous casting machine mainly on the flow of molten steel (M).
Referring to this figure, the molten steel (M) is to flow to the tundish 20 in the state accommodated in the ladle (10). For this flow, the
The molten steel M in the tundish 20 flows into the
The molten steel M in the
As the pinch roll 70 (FIG. 1) pulls the
2 is a cross-sectional view schematically showing the configuration of a
Referring to the figure, the
The
The first refractory 300 may be formed along the inner surface of the
The second refractory 400 may be disposed in the
The third refractory 500 may be disposed to cover the first refractory 300 and the second refractory 400. In addition, the third refractory 500 may be formed along the inner circumference of the wall to surround the wall. Specifically, the
3 is a flowchart illustrating a ladle refractories construction method according to an embodiment of the present invention. 4A to 4E are schematic views illustrating the form of construction sequentially according to the construction order to explain the ladle refractory construction method according to an embodiment of the present invention.
Referring to the drawings, a ladle refractory building method according to an embodiment of the present invention will be described.
It may include the step (S10) to build a
Next, a step (S20) of stacking the first refractory 300 to abut on the upper end of the
Next, a step (S30) of constructing the second refractory 400 having a smaller area than the first refractory 300 on the top of the first refractory 300. Specifically, the second refractory 400 may be constructed in a circle having an area of a predetermined diameter starting from the center of the upper end of the first refractory 300. The second refractory 400 may be a material having a greater impact resistance than the first refractory 300. Specifically, the second refractory 400 may be made of alumina.
Next, a step (S40) of filling the first refractory 300 around the second refractory 400 may correspond to the height of the second refractory 400. The first refractory 300 is an amorphous refractory, and may be castable. Therefore, the castable may be poured around the second refractory 400 and hardened. The height of the castable may be equal to the height of the second refractory 300 constructed.
Finally, the method may include a step S50 of constructing the third refractory 500 to cover the first refractory 300 and the second refractory 400. The third refractory 500 is a refractory disposed at the innermost side of the
Such ladle and ladle refractories construction method is not limited to the configuration and operation of the embodiments described above. The above embodiments may be configured such that various modifications may be made by selectively combining all or part of the embodiments.
10: ladle 15: shroud nozzle
20: tundish 21: stopper
25: immersion nozzle 30: mold
65: spray 70: pinch roll
80: strand 81: solidified shell
82: unsolidified molten steel 85: solidification completion point
91: cutting point 100: sheath
200: permanent field 300: first refractory
400: second refractory 500, 500a, 500b: third refractory
C: bottom center P: product
Claims (12)
A first refractory disposed on the bottom, wherein a portion of the first refractory is formed;
A second refractory disposed in said concave portion, said second refractory having different characteristics from said first refractory; And
A ladle comprising a third refractory formed to cover said first refractory and said second refractory.
The concave portion,
A ladle corresponding to the center of the bottom, formed on top of the first refractory.
The ladle, wherein the first refractory includes an amorphous refractory.
Ladle according to claim 1, wherein the first refractory is castable.
And the second refractory includes refractory lead.
The second refractory includes ladle having a greater impact resistance than the first refractory.
The second refractory includes a ladle, the ladle.
Stacking a first refractory on a permanent field corresponding to the bottom;
Constructing a second refractory having a smaller area than the first refractory of the first refractory;
Filling the first refractory around the second refractory corresponding to the height of the second refractory; And
Constructing a third refractory to cover said first and second refractory.
And the first refractory is an amorphous refractory.
And the first refractory is castable.
The second refractory includes ladle refractories having a greater impact resistance than the first refractory, ladle refractory building method.
The second refractory material, alumina material, comprising a refractory construction method of the ladle.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020100073121A KR101175626B1 (en) | 2010-07-29 | 2010-07-29 | Ladle and construction method of refractories for ladle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020100073121A KR101175626B1 (en) | 2010-07-29 | 2010-07-29 | Ladle and construction method of refractories for ladle |
Publications (2)
Publication Number | Publication Date |
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KR20120011385A KR20120011385A (en) | 2012-02-08 |
KR101175626B1 true KR101175626B1 (en) | 2012-08-21 |
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KR1020100073121A KR101175626B1 (en) | 2010-07-29 | 2010-07-29 | Ladle and construction method of refractories for ladle |
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Families Citing this family (1)
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CN110449568B (en) * | 2019-08-27 | 2022-01-25 | 北京利尔高温材料股份有限公司 | Steel ladle composite bottom construction process |
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