JP3037105B2 - Irregular refractory lining for steel ladle - Google Patents
Irregular refractory lining for steel ladleInfo
- Publication number
- JP3037105B2 JP3037105B2 JP7098853A JP9885395A JP3037105B2 JP 3037105 B2 JP3037105 B2 JP 3037105B2 JP 7098853 A JP7098853 A JP 7098853A JP 9885395 A JP9885395 A JP 9885395A JP 3037105 B2 JP3037105 B2 JP 3037105B2
- Authority
- JP
- Japan
- Prior art keywords
- lining
- hot water
- irregular
- thickness
- steel ladle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、溶鋼取鍋敷部の不定形
耐火物ライニングに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refractory lining for a molten steel ladle.
【０００２】[0002]
【従来の技術】溶鋼取鍋の内張りライニングの損傷は、
一般に、取鍋の部位によって大きく異なる。例えば、ス
ラグと接する所謂スラグラインや受鋼時、溶鋼の当たる
部分（以下、湯当たり部という。）等は損傷の大きい部
位である。これに対処するために、損傷を軽減してライ
ニングの損傷バランスを保つ目的で、部位別に材質の異
なる耐火物を張りわけたり、湯当たり部におけるプレキ
ャストブロックの埋め込みのようにあらかじめ局部的な
取り換えを想定したライニング方法が実施されている。
この例として、平面形状を楕円形とした耐火物ブロック
を湯当たり部に配し、その周囲を不定形耐火物で取り囲
んでライニングすることが、特開平4-182059号公報に開
示されている。2. Description of the Related Art Damage to a lining of a steel ladle is as follows.
Generally, it varies greatly depending on the part of the ladle. For example, a so-called slag line in contact with the slag, a portion where the molten steel hits at the time of receiving steel (hereinafter referred to as a hot water contact portion), and the like are portions that are greatly damaged. In order to cope with this, in order to reduce the damage and maintain the balance of the lining, renewable materials of different materials are divided into parts and local replacement is performed in advance such as embedding a precast block in the hot water contact area. The assumed lining method has been implemented.
As an example of this, Japanese Patent Laid-Open No. 4-182059 discloses that a refractory block having an elliptical planar shape is arranged at a hot water contact portion, and the periphery of the refractory block is surrounded by an irregular refractory and lined.
【０００３】[0003]
【発明が解決しようとする課題】上記の例のように、耐
火物ブロックを取り囲んで不定形耐火物を施工するライ
ニング方法は、施工作業の機械化が困難であるため、敷
部を不定形耐火物でライニングする方向へと移行しつつ
ある。しかし、従来、溶鋼取鍋の敷部に施工されるライ
ニングは一定の厚さであるため、使用中、湯当たり部が
先に損傷することは避けられない。このため、湯当たり
部のライニングが羽口れんがより低くなると、その部分
に溶鋼が残存するようになる。この場合、損傷部分のラ
イニングを継ぎ足し補修して使用するか、羽口れんがを
損傷部分のライニング厚さまで薄くして使用するかの、
いずれかの方法が採られている。損傷部分のライニング
を継ぎ足し補修する場合は、補修厚さが薄いと使用中に
補修部分が剥離し、羽口れんがの損傷を早め溶鋼取鍋の
寿命を短くすることがある。また、羽口れんがを損傷部
分のライニング厚さまで薄くする場合は、溶鋼取鍋の寿
命が短くなる。As described above, in the lining method of constructing an irregular-shaped refractory around a refractory block, it is difficult to mechanize the construction work. It is moving in the direction of lining. However, conventionally, since the lining applied to the laid portion of the molten steel ladle has a constant thickness, it is inevitable that the hot water contact portion is damaged first during use. For this reason, when tuyere brick becomes lower in the lining of the hot water contact portion, molten steel will remain in that portion. In this case, whether the lining of the damaged part is added and repaired, or the tuyere brick is thinned to the lining thickness of the damaged part and used
Either method has been adopted. When the repair is performed by adding the lining of the damaged portion, if the repair thickness is small, the repaired portion may peel off during use, and the tuyere brick may be damaged more quickly and the life of the molten steel ladle may be shortened. Further, when the tuyere brick is thinned to the lining thickness of the damaged portion, the life of the molten steel ladle is shortened.
【０００４】また、損傷部分のライニングを継ぎ足し補
修する場合は、溶鋼取鍋の中間修理時に行い、大修理時
は、敷部全面のライニングを取り替える初期施工を行っ
ている。初期施工を行う場合は、湯当たり周辺部の損傷
が少ない、まだ十分使用に耐える状態のライニングも取
り替えるため、湯当たり周辺部のライニングは有効に使
用されていないのが現状である。また、羽口れんがは、
出鋼時の溶鋼流により羽口れんが周辺部よりも速く損傷
するため、中間修理時に羽口れんがの取り替えを行って
いる。In addition, when the lining of the damaged portion is added and repaired, the repair is performed at the time of intermediate repair of the molten steel ladle, and at the time of major repair, initial construction is performed in which the lining of the entire floor is replaced. At the time of initial construction, the lining in the peripheral area of the hot water is not effectively used because the lining of the peripheral area of the hot water is less damaged and the lining in a state that can withstand use is also replaced. In addition, tuyere brick,
The tuyere bricks are replaced at the time of intermediate repairs because the tuyere bricks are damaged faster than the surrounding area due to the molten steel flow during tapping.
【０００５】本発明は、不定形耐火物を使用して、初期
施工時の湯当たり部のライニング厚さを厚くするととも
に、湯当たり部周辺部のライニング厚さを薄くすること
によって、大修理から大修理まで、すなわち初期施工か
ら次回の初期施工までの不定形耐火物の使用量を削減す
る溶鋼取鍋敷部の不定形耐火物ライニングを提供するこ
とを目的とする。SUMMARY OF THE INVENTION The present invention uses a refractory material of an irregular shape to increase the lining thickness of the hot water contact portion at the time of initial construction and to reduce the lining thickness of the peripheral portion of the hot water contact portion, so that large repairs can be made. It is an object of the present invention to provide an irregular-shaped refractory lining of a molten steel ladle to reduce the amount of the irregular-shaped refractory used until a major repair, that is, from the initial construction to the next initial construction.
【０００６】[0006]
【課題を解決するための手段】本発明の要旨は、溶鋼取
鍋敷部の不定形耐火物ライニングにおいて、受鋼時、溶
鋼の当たる領域のパーマれんがの厚さを周辺部よりも薄
くし、その部分の不定形耐火物ライニングを厚くした溶
鋼取鍋敷部の不定形耐火物ライニングである。SUMMARY OF THE INVENTION The gist of the present invention is to provide a refractory lining of a molten steel ladle, in which, when receiving steel, the thickness of the permanent brick in a region where the molten steel is applied is made thinner than the peripheral portion. It is an irregular-shaped refractory lining of the molten steel ladle bed part where the irregular-shaped refractory lining of that part was thickened.
【０００７】[0007]
【作用】本発明に係わる溶鋼取鍋敷部の不定形耐火物ラ
イニングは、湯当たり部のパーマれんがの厚さを周辺部
よりも薄くし、その部分は周辺部よりも不定形耐火物ラ
イニングを厚くしている。また、湯当たり部周辺部の不
定形耐火物ライニング厚さは大修理から大修理までの間
の使用に耐える最小限の厚さにする。このことによっ
て、湯当たり部のライニングは厚いものの、敷部に使用
する不定形耐火物の量は従来の不定形耐火物ライニング
よりも少なくすることができる。The irregular-shaped refractory lining of the molten steel ladle according to the present invention makes the thickness of the perm brick at the hot water contact portion thinner than the peripheral portion, and the portion has a more irregular shape than the peripheral portion.
The inning is thickened. In addition, the thickness of the irregular-shaped refractory lining around the hot water contact portion is set to a minimum thickness that can withstand use between major repairs. Thus, although the lining of the hot water contact portion is thick, the amount of the amorphous refractory used for the laying portion can be smaller than that of the conventional amorphous refractory lining.
【０００８】初期施工時の湯当たり部の不定形耐火物ラ
イニング厚さは、溶鋼取鍋の大修理から大修理間に行う
２回程度の中間修理時に継ぎ足し補修することにして、
使用時の損傷速度を勘案して決める。これに基づいて湯
当たり部のパーマれんがの厚さを周辺部よりも薄くす
る。また、初期施工時の湯当たり部周辺部の不定形耐火
物ライニング厚さは大修理から大修理までの間の使用に
耐え、かつ大修理時の取り替え前（使用後）時点の羽口
れんがの厚さになるまで使用に耐える最小限の厚さにす
る。The thickness of the irregular refractory lining at the hot water contact area at the time of initial construction is determined to be increased and repaired during about two intermediate repairs between a major repair and a major repair of a molten steel ladle.
Determined in consideration of the damage speed during use. Based on this, the thickness of the perm brick at the hot water contact portion is made thinner than the peripheral portion. In addition, the thickness of the irregular-shaped refractory lining around the hot water contact area at the time of initial construction can withstand use between major repairs and major repairs, and the tuyere brick before replacement (after use) at the time of major repairs Make it the minimum thickness that can be used until it becomes thick.
【０００９】このように、初期施工時の溶鋼取鍋敷部の
不定形耐火物ライニング厚さを湯当たり部とその周辺部
で変えることによって、湯当たり部のライニングのみ中
間修理時に継ぎ足し補修すればよくなり、大修理から大
修理までの間に使用する不定形耐火物の量は削減でき
る。As described above, by changing the thickness of the irregular-shaped refractory lining of the molten steel ladle bed at the time of the initial construction at the hot water contact portion and its peripheral portion, only the lining of the hot water contact portion can be added and repaired during the intermediate repair. The amount of irregular refractories used between major repairs can be reduced.
【００１０】[0010]
【実施例】以下に、本発明の実施例について説明する。
実施例の溶鋼取鍋は容量 240トンで、その断面概略図を
図１に示す。図１において、１は湯当たり部を、２は敷
部の不定形耐火物を、３は不定形耐火物ライニングを、
４はパーマれんがを、５は側壁の不定形耐火物を、６は
羽口れんがを、７は鉄皮をそれぞれ示す。また、敷部の
ライニングにはアルミナ・スピネル質不定形耐火物を使
用した。その化学組成および物理特性を表１に示す。Embodiments of the present invention will be described below.
The molten steel ladle of the embodiment has a capacity of 240 tons, and a schematic sectional view thereof is shown in FIG. In FIG. 1, 1 is a hot water contact portion, 2 is an amorphous refractory of a floor portion, 3 is an amorphous refractory lining,
Reference numeral 4 denotes a permanent brick, 5 denotes an amorphous refractory on the side wall, 6 denotes a tuyere brick, and 7 denotes a steel shell. Alumina-spinel amorphous refractory was used for the lining of the floor. Table 1 shows the chemical composition and physical properties.
【００１１】[0011]
【表１】 [Table 1]
【００１２】図１に示すように、湯当たり部１のパーマ
れんが４の厚さをその周辺部のパーマれんが４の厚さよ
りも薄くして、パーマれんが４の上に敷部の不定形耐火
物２を施工してライニングを行った。このときの湯当た
り部１の不定形耐火物２の厚さは 250〜260mm で、湯当
たり部１の周辺部の不定形耐火物ライニング３の厚さは
130〜140mm である。また、湯当たり部１の周辺部の不
定形耐火物ライニング３のこの厚さは、大修理時の取り
替え前の羽口れんが６の厚さになるまで使用に耐える厚
さで、大修理から大修理までの間使用可能な厚さであ
る。As shown in FIG. 1, the thickness of the perm brick 4 at the hot water contact portion 1 is made smaller than the thickness of the perm brick 4 at the periphery thereof, and the irregular refractory of the laying portion is placed on the perm brick 4. 2 and lining was performed. At this time, the thickness of the irregular-shaped refractory 2 at the hot water contact portion 1 is 250 to 260 mm, and the thickness of the irregular-shaped refractory lining 3 around the hot water contact portion 1 is
130-140mm. The thickness of the irregular-shaped refractory lining 3 around the hot water contact part 1 is a thickness that can be used until the tuyere brick before replacement at the time of major repair becomes 6 thick. It is a thickness that can be used until repair.
【００１３】この溶鋼取鍋の不定形耐火物ライニングの
損傷速度は、湯当たり部１で最大3.0mm/ヒート、その外
周部で最大0.4mm/ヒートで、50ヒート毎の中間修理で湯
当たり部のライニングの継ぎ足し補修と羽口れんがの取
り替えを行い、 150ヒート使用した後の大修理で敷部の
不定形耐火物ライニング３の全面取り替えを行った。こ
れによって、大修理から大修理までの間に、敷部に使用
する不定形耐火物の量は従来の不定形耐火物ライニング
よりも20％少なくすることができた。そして、溶鋼取鍋
の寿命を一定とした時には、不定形耐火物ライニングの
補修作業を定期的に行い平滑化することができた。The damage rate of the refractory lining of the molten steel ladle is 3.0 mm / heat at the hot water contact 1 at the maximum and 0.4 mm / heat at the outer peripheral part at the maximum, and the hot water contact at the intermediate repair every 50 heats. The lining was repaired and tuyere bricks were replaced, and the entire renovation of the irregular-shaped refractory lining 3 on the floor was made in a major repair after using 150 heat. As a result, between the major repair and the major repair, the amount of the amorphous refractory used for the floor can be reduced by 20% compared to the conventional amorphous refractory lining. Then, when the life of the molten steel ladle was made constant, the repair work of the irregular-shaped refractory lining was performed at regular intervals to achieve smoothing.
【００１４】[0014]
【発明の効果】以上述べたところから明らかなように、
本発明によれば、不定形耐火物を使用して、湯当たり部
のライニング厚さを厚くするとともに、湯当たり部周辺
部のライニング厚さを薄くすることによって、大修理か
ら大修理まで、すなわち初期施工から次回の初期施工ま
での不定形耐火物の使用量を削減することができる。As is apparent from the above description,
According to the present invention, by using an irregular-shaped refractory and increasing the lining thickness of the hot water contact portion and reducing the lining thickness of the peripheral portion of the hot water contact portion, from large repair to large repair, that is, It is possible to reduce the use amount of the refractory from the initial construction to the next initial construction.
【図１】実施例の溶鋼取鍋の断面図である。FIG. 1 is a sectional view of a molten steel ladle according to an embodiment.
１…湯当たり部、２…敷部の不定形耐火物、３…不定形
耐火物ライニング、４…パーマれんが、５…側壁の不定
形耐火物、６…羽口れんが、７…鉄皮。1 ... hot water contact part, 2 ... irregular-shaped refractory lining, 3 ... irregular-shaped refractory lining, 4 ... permanent brick, 5 ... irregular-shaped refractory on the side wall, 6 ... tuyere brick, 7 ... iron shell.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平４−319066（ＪＰ，Ａ) 特開 平２−280958（ＪＰ，Ａ) 特開 昭55−141720（ＪＰ，Ａ) 実開 平２−65472（ＪＰ，Ｕ) 実開 昭60−121199（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) B22D 41/02 F27D 1/04 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-319066 (JP, A) JP-A-2-280958 (JP, A) JP-A-55-141720 (JP, A) 65472 (JP, U) Japanese Utility Model Showa 60-121199 (JP, U) (58) Field surveyed (Int. Cl. 7 , DB name) B22D 41/02 F27D 1/04
Claims (1)
において、受鋼時、溶鋼の当たる領域のパーマれんがの
厚さを周辺部よりも薄くし、その部分の不定形耐火物ラ
イニングを厚くしたことを特徴とする溶鋼取鍋敷部の不
定形耐火物ライニング。1. In a refractory lining of a molten steel ladle, when receiving steel, the thickness of a permanent brick in a region where the molten steel is applied is made thinner than a peripheral portion, and the refractory lining in that portion is made thicker. The refractory lining of the molten steel ladle bedding which is characterized by the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7098853A JP3037105B2 (en) | 1995-04-24 | 1995-04-24 | Irregular refractory lining for steel ladle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7098853A JP3037105B2 (en) | 1995-04-24 | 1995-04-24 | Irregular refractory lining for steel ladle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08300140A JPH08300140A (en) | 1996-11-19 |
| JP3037105B2 true JP3037105B2 (en) | 2000-04-24 |
Family
ID=14230796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7098853A Expired - Fee Related JP3037105B2 (en) | 1995-04-24 | 1995-04-24 | Irregular refractory lining for steel ladle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3037105B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2804210C1 (en) * | 2022-08-04 | 2023-09-26 | Публичное акционерное общество "Северсталь" (ПАО "Северсталь") | Cast iron ladle |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5606177B2 (en) * | 2010-06-25 | 2014-10-15 | 株式会社神戸製鋼所 | Ladle for transporting molten steel |
| RU2486989C2 (en) * | 2011-08-22 | 2013-07-10 | Открытое акционерное общество "Чусовской металлургический завод" | Method of steel teeming ladle lining and steel teeming ladle |
| CN104907759B (en) * | 2014-03-10 | 2017-08-25 | 宝山钢铁股份有限公司 | A kind of large ladle furnace restorative procedure |
| CN108044090A (en) * | 2018-01-19 | 2018-05-18 | 山东钢铁集团日照有限公司 | A kind of method for constructing bottom of steel ladle |
| RU196897U1 (en) * | 2019-12-24 | 2020-03-19 | Общество с ограниченной ответственностью "Кералит" | FILLING BUCKET |
-
1995
- 1995-04-24 JP JP7098853A patent/JP3037105B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2804210C1 (en) * | 2022-08-04 | 2023-09-26 | Публичное акционерное общество "Северсталь" (ПАО "Северсталь") | Cast iron ladle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08300140A (en) | 1996-11-19 |
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