JPH05140662A - Refractory for gas blowing - Google Patents
Refractory for gas blowingInfo
- Publication number
- JPH05140662A JPH05140662A JP6082691A JP6082691A JPH05140662A JP H05140662 A JPH05140662 A JP H05140662A JP 6082691 A JP6082691 A JP 6082691A JP 6082691 A JP6082691 A JP 6082691A JP H05140662 A JPH05140662 A JP H05140662A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- body part
- penetrating body
- tuyere brick
- gas penetrating
- 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.)
- Pending
Links
Landscapes
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Furnace Charging Or Discharging (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は溶融金属中にアルゴン，
Ｎ2などのガスを吹き込むためのガス吹込用耐火物に関
するものである。BACKGROUND OF THE INVENTION The present invention relates to argon in molten metal,
The present invention relates to a gas blowing refractory for blowing a gas such as N 2 .
【０００２】[0002]
【従来の技術】従来、溶融金属の精錬においてガスを吹
き込むためにポーラスプラグを用いているが、このポー
ラスプラグは多孔質のため耐用が低いもので、ポーラス
プラグが交換できるように図１の如く羽口レンガ２を用
い、ポーラスプラグ１と羽口レンガ２の間あるいは図２
のようにポーラスプラグ１とポーラススリーブレンガ４
の間、及びポーラススリーブレンガ４と羽口レンガ２と
の間にそれぞれモルタル目地部３，５を介して接着され
ている。2. Description of the Related Art Conventionally, a porous plug has been used to blow a gas in refining molten metal, but this porous plug has a low durability because it is porous, so that the porous plug can be replaced as shown in FIG. Using the tuyere brick 2, and between the porous plug 1 and the tuyere brick 2 or Fig. 2
Porous plug 1 and porous sleeve brick 4 like
And between the porous sleeve brick 4 and the tuyere brick 2 via the mortar joints 3 and 5, respectively.
【０００３】[0003]
【発明が解決しようとする課題】しかるにこのモルタル
目地部３，５は、溶鋼精錬時またはポーラスプラグ１の
酸洗時に先行溶損することによりポーラスプラグ１が剥
離し、ポーラスプラグ１の耐用低下を助勢している。However, in the mortar joints 3 and 5, the porous plug 1 is peeled off due to preceding melting damage during molten steel refining or during pickling of the porous plug 1 to help reduce the durability of the porous plug 1. is doing.
【０００４】本発明はポーラスプラグの周囲の目地部の
先行溶損を防止し、安定でかつ、高耐用のガス吹込用耐
火物を提供することを目的としている。An object of the present invention is to provide a stable and highly durable gas-blowing refractory which prevents preceding melting damage of joints around a porous plug.
【０００５】[0005]
【課題を解決するための手段】本発明は上記課題を解決
するためになされたものであって、次のように構成して
ある。即ち本発明のガス吹込用耐火物は、ガス透過体部
が通気のための貫通孔またはスリットからなり、その周
囲の周囲羽口レンガ部と一体に形成されたこと、及びガ
ス透過体部及びまたはガス透過体部周囲の材質を可変と
したことを特徴とするものである。次にこの発明を以下
各実施例について図面及び表１を参照しながら詳しく説
明する。The present invention has been made to solve the above problems, and is configured as follows. That is, the gas-blowing refractory of the present invention, the gas permeation body portion consists of through holes or slits for ventilation, was integrally formed with the surrounding tuyere brick portion, and the gas permeation body portion and or It is characterized in that the material around the gas permeation body is variable. The present invention will be described in detail below with reference to the drawings and Table 1 for each embodiment.
【０００６】[0006]
【実施例１】図３において、本発明のガス吹込用耐火物
は４００ｍｍ×４００ｍｍ×３６０ｍｍの形状で、ガス
透過体部６と周囲羽口レンガ部７とから構成されてい
る。そしてガス透過体部６は、φ（外径）１０５ｍｍ内
に間隙０．２５ｍｍ、幅１０ｍｍのスリット９が３２本
設置され、ガス透過体部６及び周囲羽口レンガ部７は、
アルミナ８８％、気孔率１０％の同材質にて構成されて
いる。上記のガス吹込み用耐火物を１５０トンＬＦ用取
鍋にセットし使用した。その結果は耐用３４〜３７ヒー
ト、平均３５．２回であった。EXAMPLE 1 In FIG. 3, the gas-blowing refractory material of the present invention has a shape of 400 mm.times.400 mm.times.360 mm, and is composed of a gas permeation body portion 6 and a surrounding tuyere brick portion 7. Then, in the gas permeator section 6, 32 slits 9 having a gap of 0.25 mm and a width of 10 mm are installed in a φ (outer diameter) 105 mm, and the gas permeator section 6 and the surrounding tuyere brick section 7 are
It is composed of the same material with 88% alumina and 10% porosity. The gas refractory for gas injection was set in a 150 ton LF ladle and used. The result was a durability of 34 to 37 heats and an average of 35.2 times.
【０００７】従来のモルタルセット構造によるポーラス
プラグと羽口レンガの耐用１７〜３０回、平均２３．５
回でポーラスプラグを３〜５回交換したのに比較して本
発明品はポーラス透過体部と周囲羽口レンガ部とが一体
のため、耐用も大幅に向上し、かつ安定して使用でき
た。Endurance of porous plug and tuyere brick with conventional mortar set structure 17-30 times, average 23.5
Compared to the case where the porous plug was exchanged 3 to 5 times, the product of the present invention had the porous transparent body portion and the surrounding tuyere brick portion integrated, so that the durability was significantly improved and stable use was possible. .
【０００８】[0008]
【実施例２】図４において、本発明のガス吹込用耐火物
は４００ｍｍ×４００ｍｍ×２５０ｍｍの形状でガス透
過体部６と周囲羽口レンガ部７及び８から構成されてい
る。そしてガス透過体部６は中心でφ（外径）８３ｍｍ
内にφ（外径）０．６ｍｍの貫通孔１０を４８本設けて
いる。ガス透過体部６及び中心からφ（外径）１２０ｍ
ｍ内の周囲羽口レンガ部８の材質はアルミナ９５％、気
孔率８．５％である。これを除く周囲羽口レンガ部７の
材質はアルミナ８８％、気孔率１０．０％の材質であ
る。このガス吹込用耐火物を８０トンＬＦ用取鍋にセッ
トし使用した。結果は耐用２２〜２５回、平均２３．９
回であった。従来のモルタルセットによるポーラスプラ
グと羽口レンガを使用した場合、ボーラスプラグと羽口
レンガの耐用は９〜１４回、平均１３、３回でポーラス
プラグは２〜４回交換した。本発明品は従来品に比較し
て耐用が大幅に向上し、かつ安定して使用できた。EXAMPLE 2 In FIG. 4, the gas-blowing refractory material of the present invention has a shape of 400 mm.times.400 mm.times.250 mm and is composed of a gas permeation body portion 6 and surrounding tuyere brick portions 7 and 8. And the gas permeator part 6 is 83 mm in diameter (outer diameter) at the center.
Forty-eight through holes 10 having φ (outer diameter) of 0.6 mm are provided therein. Φ (outer diameter) 120 m from the gas permeator 6 and center
The material of the surrounding tuyere brick part 8 in m is 95% alumina and 8.5% porosity. Except for this, the material of the surrounding tuyere brick portion 7 is a material having 88% alumina and 10.0% porosity. This refractory material for blowing gas was set in a 80 ton LF ladle and used. The result is a service life of 22 to 25 times, an average of 23.9.
It was once. When the porous plug and the tuyere brick by the conventional mortar set were used, the durability of the bolus plug and the tuyere brick was 9 to 14 times, the average was 13 or 3 times, and the porous plug was changed 2 to 4 times. The product of the present invention has significantly improved durability as compared with the conventional product and can be used stably.
【０００９】[0009]
【発明の効果】この発明では、ポーラスプラグのガス透
過体部を貫通孔またはスリットとし、ガス透過体部を緻
密な材質としたことにより、ガス透過体部への地金侵入
がなく溶鋼の精錬時及び酸洗時の溶損がほとんどなくな
った。そしてガス透過体部と周囲羽口レンガ部とを一体
に形成したことにより、ガス透過体部に近接するモルタ
ル目地部を無くすることができ、ガス吹込用耐火物の耐
用寿命を大幅に向上できる。またこの発明では、ガス透
過体部の酸素洗浄が厳しい場合などにはガス透過体部及
びまたはその周囲により高耐蝕性材質を用いるなど材質
の可変ができ甚だ重宝である。According to the present invention, the gas permeable body portion of the porous plug is formed as a through hole or a slit, and the gas permeable body portion is made of a dense material. Almost no erosion damage at the time of pickling and pickling. And by integrally forming the gas permeation body portion and the surrounding tuyere brick portion, it is possible to eliminate the mortar joint portion in the vicinity of the gas permeation body portion, it is possible to significantly improve the service life of the gas blowing refractory . Further, according to the present invention, when the oxygen permeation of the gas permeator is severe, the material can be changed such that a highly corrosive material is used for the gas permeator and its surroundings, which is very useful.
【図１】従来のガス吹込用耐火物の実施例の説明図であ
る。FIG. 1 is an explanatory diagram of an example of a conventional gas-blowing refractory material.
【図２】従来のガス吹込用耐火物の別の実施例の説明図
である。FIG. 2 is an explanatory view of another example of a conventional gas-blowing refractory material.
【図３】本発明のガス吹込用耐火物の実施例の説明図で
ある。FIG. 3 is an explanatory view of an embodiment of a gas blowing refractory material of the present invention.
【図４】本発明のガス吹込用耐火物の別の実施例の説明
図である。FIG. 4 is an explanatory view of another embodiment of the gas blowing refractory material of the present invention.
１ ポーラスプラグ ２ 羽口レンガ ３ モルタル目地部 ４ ポーラススリーブレンガ ５ モルタル目地部 ６ ガス透過体部 7、8 周囲羽口レンガ部 ９ スリット 10 貫通孔 1 Porous plug 2 Tuyere brick 3 Mortar joint part 4 Porous sleeve brick 5 Mortar joint part 6 Gas permeation body part 7, 8 Surrounding tuyere brick part 9 Slit 10 Through hole
【表１】 [Table 1]
Claims (2)
はスリットからなり、その周囲の周囲羽口レンガ部と一
体に形成されたことを特徴とするガス吹込用耐火物。1. A gas-blowing refractory body, wherein the gas-permeable body portion is formed of a through hole or a slit for ventilation, and is integrally formed with a surrounding tuyere brick portion.
囲の材質を可変としたことを特徴とする請求項１のガス
吹込用耐火物。2. The refractory for gas injection according to claim 1, wherein the material around the gas permeable member and / or the material around the gas permeable member is variable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6082691A JPH05140662A (en) | 1991-01-28 | 1991-01-28 | Refractory for gas blowing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6082691A JPH05140662A (en) | 1991-01-28 | 1991-01-28 | Refractory for gas blowing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05140662A true JPH05140662A (en) | 1993-06-08 |
Family
ID=13153548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6082691A Pending JPH05140662A (en) | 1991-01-28 | 1991-01-28 | Refractory for gas blowing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05140662A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101485035B1 (en) * | 2012-12-26 | 2015-01-21 | 주식회사 포스코 | Gas injector and apparatus for treating of melting having thereof gas injector |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS602615A (en) * | 1983-06-16 | 1985-01-08 | Nisshin Steel Co Ltd | Blowing nozzle for refining gas |
| JPS62250112A (en) * | 1986-04-23 | 1987-10-31 | Nippon Kokan Kk <Nkk> | Gas blowing plug |
| JPS6324008A (en) * | 1986-03-06 | 1988-02-01 | Nippon Kokan Kk <Nkk> | Gas blowing plug |
| JPS63241110A (en) * | 1987-03-27 | 1988-10-06 | Sumitomo Metal Ind Ltd | Production of block for bubbling molten metal |
-
1991
- 1991-01-28 JP JP6082691A patent/JPH05140662A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS602615A (en) * | 1983-06-16 | 1985-01-08 | Nisshin Steel Co Ltd | Blowing nozzle for refining gas |
| JPS6324008A (en) * | 1986-03-06 | 1988-02-01 | Nippon Kokan Kk <Nkk> | Gas blowing plug |
| JPS62250112A (en) * | 1986-04-23 | 1987-10-31 | Nippon Kokan Kk <Nkk> | Gas blowing plug |
| JPS63241110A (en) * | 1987-03-27 | 1988-10-06 | Sumitomo Metal Ind Ltd | Production of block for bubbling molten metal |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101485035B1 (en) * | 2012-12-26 | 2015-01-21 | 주식회사 포스코 | Gas injector and apparatus for treating of melting having thereof gas injector |
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