JPH08300140A - Unshaped refractory lining of molten steel ladle bed part - Google Patents
Unshaped refractory lining of molten steel ladle bed partInfo
- Publication number
- JPH08300140A JPH08300140A JP9885395A JP9885395A JPH08300140A JP H08300140 A JPH08300140 A JP H08300140A JP 9885395 A JP9885395 A JP 9885395A JP 9885395 A JP9885395 A JP 9885395A JP H08300140 A JPH08300140 A JP H08300140A
- Authority
- JP
- Japan
- Prior art keywords
- molten steel
- thickness
- lining
- refractory lining
- unshaped refractory
- 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.)
- Granted
Links
Landscapes
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
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 an unshaped refractory lining for a molten steel ladle floor.
【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 the lining of a molten steel ladle is
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 to be in contact with molten steel (hereinafter, referred to as a molten metal contact portion) at the time of receiving steel, and the like are portions that are greatly damaged. To deal with this, in order to reduce the damage and maintain the damage balance of the lining, refractory materials of different materials are divided into different parts, and local replacement is performed beforehand such as embedding a precast block in the hot water contact part. The envisioned lining method is implemented.
As an example of this, it is disclosed in Japanese Patent Laid-Open No. 4-182059 that a refractory block having an elliptical planar shape is arranged in a hot water contact portion, and the periphery thereof is surrounded by an indeterminate refractory material 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 refractory surrounding a refractory block, it is difficult to mechanize the construction work. It is moving toward lining with. However, since the lining applied to the floor portion of the molten steel ladle has a constant thickness, it is inevitable that the hot water contact portion will be damaged during use. For this reason, if the tuyere of the lining of the hot water contact portion becomes lower, molten steel will remain in that portion. In this case, whether the lining of the damaged part should be added and repaired, or the tuyere brick should be thinned to the lining thickness of the damaged part before use.
Either method is adopted. When repairing by adding the lining of the damaged part, if the repair thickness is thin, the repaired part may peel off during use, which may accelerate the damage of the tuyere brick and shorten the life of the molten steel ladle. 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 replenished and repaired, it is carried out during an intermediate repair of the molten steel ladle, and at the time of a major repair, an initial construction is performed in which the lining of the entire floor is replaced. When initial construction is performed, the lining around the hot water contact area is not used effectively because the lining that is less likely to be damaged around the hot water area and is still in a condition that can withstand sufficient use is replaced. Also, the tuyere brick is
The tuyere brick is damaged faster than the surrounding area due to the molten steel flow when tapping, so the tuyere brick is replaced during the intermediate repair.
【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。According to the present invention, an amorphous refractory is used to increase the lining thickness of the hot water contact part at the time of initial construction and to reduce the lining thickness of the peripheral part of the hot water contact part so that a large repair can be performed. An object is to provide an amorphous refractory lining for a molten steel ladle laying part that reduces the amount of irregular refractory used from the time of 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。Means for Solving the Problems The gist of the present invention is to make the thickness of a perm brick in a region hit by molten steel smaller than that of a peripheral portion when receiving steel in an indefinite refractory lining of a molten steel ladle laying portion, This is the amorphous refractory lining of the molten steel ladle laying part where the irregular refractory lining at that part is 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。In the amorphous refractory lining of the molten steel ladle laying portion according to the present invention, the thickness of the perm brick in the hot water contact portion is thinner than the peripheral portion, and that portion is thicker than the peripheral portion.
In addition, the thickness of the amorphous refractory lining around the hot water contact part shall be the minimum thickness that can be used between major repairs. As a result, although the lining of the hot water contact portion is thick, the amount of the irregular refractory material used for the floor portion can be made smaller than that of the conventional irregular 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。[0008] The irregular refractory lining thickness of the hot water contact part at the time of initial construction is decided to be repaired by supplementing it during two intermediate repairs performed between major repairs of the molten steel ladle.
Decide in consideration of the damage speed during use. Based on this, the thickness of the perm brick in the hot water contact part is made thinner than in the peripheral part. In addition, the irregular refractory lining thickness around the hot water contact area during initial construction withstands use between major repairs, and the tuyere bricks before replacement (after use) during major repairs Use the minimum thickness that can be used up to the thickness.
【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 amorphous refractory lining of the molten steel ladle laying part at the time of initial construction at the hot water contact part and its peripheral part, only the lining of the hot water contact part can be repaired by additional repair during intermediate repair. Improves and reduces the amount of amorphous refractory used between major repairs.
【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。EXAMPLES Examples of the present invention will be described below.
The molten steel ladle of the example has a capacity of 240 tons, and its schematic sectional view is shown in FIG. In FIG. 1, 1 is a hot water contact part, 2 is an irregular refractory lining, and 3 is an irregular refractory lining,
4 is a perm brick, 5 is an irregular refractory on the side wall, 6 is a tuyere brick, and 7 is an iron crust. Alumina spinel amorphous refractory was used for the lining of the floor. The chemical composition and physical properties are shown in Table 1.
【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 in the hot water contact part 1 is made thinner than the thickness of the perm brick 4 in the peripheral part thereof, and the irregular refractory of the laying part is placed on the perm brick 4. 2 was constructed and lining was performed. At this time, the thickness of the irregular refractory 2 in the hot water contact part 1 is 250 to 260 mm, and the thickness of the irregular refractory lining 3 in the peripheral part of the hot water contact part 1 is
It is 130 to 140 mm. In addition, this thickness of the irregular refractory lining 3 around the hot water contact part 1 is the thickness that can be used until the tuyere brick 6 before replacement at the time of major repair is 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 amorphous refractory lining of this molten steel ladle is 3.0 mm / heat at the hot water contact part 1 and 0.4 mm / heat at the outer peripheral part, and the hot water contact part at the intermediate repair every 50 heats. The lining was repaired and the tuyere bricks were replaced, and after a large heat of 150 heats, the unfixed refractory lining 3 on the floor was completely replaced. As a result, the amount of amorphous refractory used for the floor between the major repairs could be reduced by 20% compared to the conventional irregular refractory lining. Then, when the life of the molten steel ladle was kept constant, the irregular refractory lining could be repaired regularly and smoothed.
【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 amorphous refractory, by increasing the lining thickness of the hot water contact portion, and by thinning the lining thickness of the peripheral portion of the hot water contact portion, from major repair to major repair, that is, It is possible to reduce the amount of irregular refractory used 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 cross-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。DESCRIPTION OF SYMBOLS 1 ... Hot water contact part, 2 ... Unshaped refractory lining, 3 ... Irregular refractory lining, 4 ... Permanent brick, 5 ... Side wall irregular refractory, 6 ... Tuft brick, 7 ... Iron skin.
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 the amorphous refractory lining of a molten steel ladle laying portion, when the steel is received, the thickness of the perma brick in the area where the molten steel hits is made thinner than the peripheral portion, and the amorphous refractory lining in that area is thickened. Unshaped refractory lining of molten steel ladle floor characterized by
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 true JPH08300140A (en) | 1996-11-19 |
| JP3037105B2 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 (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012006053A (en) * | 2010-06-25 | 2012-01-12 | Kobe Steel Ltd | Ladle for conveying 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 |
| CN104907759A (en) * | 2014-03-10 | 2015-09-16 | 宝山钢铁股份有限公司 | Large steel ladle repair method |
| 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 (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012006053A (en) * | 2010-06-25 | 2012-01-12 | Kobe Steel Ltd | Ladle for conveying 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 |
| CN104907759A (en) * | 2014-03-10 | 2015-09-16 | 宝山钢铁股份有限公司 | Large steel ladle repair method |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3037105B2 (en) | 2000-04-24 |
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