JPH08311513A - Seal material for mud gun in blast furnace and method for preventing leakage of mud material - Google Patents
Seal material for mud gun in blast furnace and method for preventing leakage of mud materialInfo
- Publication number
- JPH08311513A JPH08311513A JP11602895A JP11602895A JPH08311513A JP H08311513 A JPH08311513 A JP H08311513A JP 11602895 A JP11602895 A JP 11602895A JP 11602895 A JP11602895 A JP 11602895A JP H08311513 A JPH08311513 A JP H08311513A
- Authority
- JP
- Japan
- Prior art keywords
- mud
- mud gun
- gun
- blast furnace
- sealing material
- 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
- Blast Furnaces (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、高炉マッドガンのシー
ル材およびマッド材漏出防止方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealing material for a blast furnace mud gun and a method for preventing mud material leakage.
【０００２】[0002]
【従来の技術】高炉の出銑口は、通常周方向に２〜４箇
所設けられ、その出銑口の閉塞はマッド材を充填するこ
とにより行なわれており、そのマッド材の充填にはマッ
ドガンが用いられている。2. Description of the Related Art The tapholes of a blast furnace are usually provided at 2 to 4 locations in the circumferential direction, and the tapholes are closed by filling mud material. The mud gun is used to fill the mud material. Is used.
【０００３】上記出銑口は、図５に断面図を示すよう
に、炉壁１を貫通する孔２の外端が大径に形成されてマ
ッドガン３の先端部３ａが嵌合するマッドガン嵌合部４
とされ、この嵌合部４と前記孔２との境界部分の面がマ
ッドガン圧着部５とされており、この圧着部５の箇所は
一般にＡｌ２Ｏ３−ＳｉＣ−Ｃ質の耐火物で形成されて
いる。As shown in the sectional view of FIG. 5, the tap hole has a hole 2 penetrating the furnace wall 1 having a large outer end and a tip portion 3a of a mud gun 3 fitted therein. Part 4
The surface of the boundary portion between the fitting portion 4 and the hole 2 is a mud gun crimping portion 5, and the crimping portion 5 is generally formed of a refractory material of Al 2 O 3 —SiC—C quality. Has been done.
【０００４】上記のような出銑口において長期間使用す
ると、図５に符号Ａで示すように前記マッドガン圧着部
５が深さ１〜５ｍｍ程度の面荒れを生じたり、あるいは
溶銑滓の飛沫が付着したりしてマッドガン３の先端部３
ａをマッドガン圧着部５に圧接したときマッドガン先端
部３ａとマッドガン圧着部５との間に隙間が生じ、この
隙間からマッド材６が外部に漏れ出して炉内に入らない
ということが起きる。これはマッド材６のロスにつなが
るばかりでなく出銑口の完全閉塞に支障をきたし、溶銑
滓が吹き出すなどの危険性がある。When the above tap hole is used for a long period of time, the mud gun crimping portion 5 is roughened to a depth of about 1 to 5 mm as shown by the symbol A in FIG. 5, or the molten pig iron splashes. It may attach to the tip 3 of the mud gun 3.
When a is pressed against the mud gun crimping portion 5, a gap is created between the mud gun tip portion 3a and the mud gun crimping portion 5, and the mud material 6 leaks out of the gap and does not enter the furnace. This not only leads to loss of the mud material 6, but also impedes complete closure of the taphole, and there is a risk that molten pig iron will blow out.
【０００５】そこで従来では、特開昭５９−１６９３３
１号公報に示されるように、マッドガンの先端部に紙質
の円盤状のパッキンをマッド材の充填ごとに装着し、出
銑口のマッドガン圧着部の全周に密着させてマッド材を
充填するようにしたもの、あるいは特開平７−１１３１
５号公報に示されるように、マッドガンの先端部に特定
の耐火組成物からなる円盤状乃至は浅い上開きのコップ
状をなすシール材を装着し、このシール材をマッドガン
圧着部にマッドガンにより圧着させた状態としてマッド
材を充填するようにし、これらにより前述の問題点の解
消を図るようにしたものがある。Therefore, in the prior art, Japanese Patent Laid-Open No. 59-16933.
As shown in Japanese Patent Publication No. 1, a paper-like disk-shaped packing is attached to the tip of the mud gun for each filling of the mud material, and the mud gun is closely attached to the entire circumference of the mud gun crimping portion to fill the mud material. Or JP-A-7-1131
As shown in Japanese Patent Publication No. 5, a disk-shaped or shallow cup-shaped sealing material made of a specific refractory composition is attached to the tip of the mud gun, and the sealing material is crimped to the mud gun crimping portion by the mud gun. There is one in which the mud material is filled in such a state that the above-mentioned problems are solved.
【０００６】[0006]
【発明が解決しようとする課題】しかるに上記前者によ
ると、紙質のパッキンを用いるので、出銑口の内部表面
からの熱により炭化乃至は燃焼し、これによりシール性
が低下してマッド材の漏出の完全な防止ができないとい
う問題点がある。However, according to the former, since the paper-like packing is used, the heat from the inner surface of the tap hole causes carbonization or combustion, which lowers the sealing performance and causes the mud material to leak. There is a problem in that it cannot be completely prevented.
【０００７】一方、上記後者の場合は、マッドガン圧着
部乃至はその周辺にひどい面荒れが生じていてもシール
材自体がクッション性を有するので隙間なくシールする
ことができ、マッド材の漏出防止目的を達成することは
可能であるが、マッドガンの先端部にシール材をバンド
にる締着手段あるいは接着による固定手段により取付け
なければならず、そのシール材の装着が煩雑になるとい
う問題点があった。On the other hand, in the latter case, even if the mud gun crimping portion or its surroundings are severely roughened, the sealing material itself has a cushioning property, so that it is possible to seal without a gap and to prevent the mud material from leaking out. However, there is a problem in that the sealing material must be attached to the tip of the mud gun by a fastening means using a band or a fixing means by adhesion, which makes the mounting of the sealing material complicated. It was
【０００８】本発明はこれに鑑み、マッドガン先端部に
シール材を迅速かつ確実に装着することができながらシ
ール性の向上を図ることができる高炉マッドガンのシー
ル材およびマッド材漏出防止方法を提供することを目的
とする。In view of the above, the present invention provides a sealing material for a blast furnace mud gun and a method for preventing the mud material from leaking, which allows the sealing material to be quickly and surely attached to the tip portion of the mud gun while improving the sealing performance. The purpose is to
【０００９】[0009]
【課題を解決するための手段】上記従来の技術が有する
問題点を解決する手段として、本発明は、変形可能な耐
火材からなり、高炉の出銑口閉塞用マッドガンの先端部
内周に可及的密に内嵌し得る円筒形状を有し、マッドガ
ンから吐出するマッド材の圧力により前進して出銑口の
マッドガン圧着部に圧着するようにしたことを特徴とす
る高炉マッドガンのシール材、および変形可能な耐火材
からなる円筒形状のシール材を出銑口閉塞用マッドガン
の先端部内周に可及的密に内嵌し、マッドガンから吐出
するマッド材の圧力を前記シール材の後端面に受圧さ
せ、その圧力によりシール材の先端面を出銑口のマッド
ガン圧着部に圧接させてシールするようにしたことを特
徴とする高炉マッドガンのマッド材漏出防止方法にあ
る。そして好ましくは、前記シール材をテーパ状とし、
マッドガンの先端部への挿着を容易とし、またシール材
の材料としてはセラミックファイバであることがよい。As a means for solving the problems of the above-mentioned prior art, the present invention is made of a deformable refractory material, and can be applied to the inner circumference of the tip of a mud gun for closing the taphole of a blast furnace. A sealing material for a blast furnace mud gun, which has a cylindrical shape capable of being fitted tightly inside, and is adapted to be pushed forward by the pressure of the mud material discharged from the mud gun to be crimped to the mud gun crimping portion of the taphole, and A cylindrical sealing material made of a deformable refractory material is fitted as close as possible to the inner circumference of the tip part of the mud gun for closing the taphole, and the pressure of the mud material discharged from the mud gun is received by the rear end surface of the sealing material. The tip of the sealing material is brought into pressure contact with the mud gun crimping portion of the taphole by the pressure to seal the mud material of the blast furnace mud gun. And, preferably, the sealing material is tapered,
It is preferable to use ceramic fibers as a material for the sealing material because it facilitates insertion into the tip portion of the mud gun.
【００１０】[0010]
【作用】上記構成により、マッドガンによるマッド材の
充填に先立ってマッドガンの先端部内にシール材を挿着
しておき、ついでマッドガンの先端部を出銑口に挿入し
てマッドガン圧着部に突き当てたうえマッド材を圧入す
ると、マッドガンの先端部内を圧出されるマッド材が前
記シール材の後端面を加圧し、シール材がマッドガン先
端部内を前進してその先端面が出銑口内のマッドガン圧
着部に圧着する。With the above structure, the sealing material is inserted into the tip of the mud gun prior to filling the mud material with the mud gun, and then the tip of the mud gun is inserted into the tap hole and abutted against the mud gun crimping portion. When the upper mud material is press-fitted, the mud material is extruded in the tip part of the mud gun.The mud material pressurizes the rear end surface of the seal material, and the seal material advances in the tip part of the mud gun, and the tip surface becomes the mud gun crimping part in the tap hole. Crimp.
【００１１】この状態下でマッド材の充填が行われるの
で、上記シール材のマッドガン圧着部への圧着状態が継
続的に維持され、マッドガンの先端部とマッドガン圧着
部との間の隙間を塞いでマッド材や溶銑滓の漏出が防止
される。この場合、シール材に先細状のテーパを付して
おけば、マッドガンの先端部内への挿入保持が容易にで
きる。Since the mud material is filled in this state, the crimping state of the sealing material to the mud gun crimping portion is continuously maintained, and the gap between the tip portion of the mud gun and the mud gun crimping portion is closed. Leakage of mud material and molten pig iron is prevented. In this case, if the sealing material has a tapered taper, it is possible to easily insert and hold it in the tip portion of the mud gun.
【００１２】[0012]
【実施例】以下、本発明を図面に示す実施例を参照し、
図５と共通する部分には同一符号を用いて説明する。Embodiments of the present invention will now be described with reference to the drawings.
The same parts as those in FIG. 5 will be described using the same reference numerals.
【００１３】図１は本発明によるシール材７をマッドガ
ン先端部３ａへ挿着する前の状態を示しており、このシ
ール材７はセラミックファイバ製の短い円筒形状を有
し、マッドガン先端部３ａの寸法によって決定されるが
一般には長さ３０〜５０ｍｍ、肉厚３０〜５０ｍｍ程度
とされる。FIG. 1 shows a state before the sealing material 7 according to the present invention is inserted into the tip portion 3a of the mud gun. The sealing material 7 has a short cylindrical shape made of ceramic fiber and has a tip portion of the mud gun 3a. The length is determined to be 30 to 50 mm and the wall thickness is set to 30 to 50 mm, although it is determined by the dimensions.
【００１４】上記シール材７の構成材料としてのセラミ
ックファイバとしては、アルミナ等の耐火原料（含黒
鉛）、グラスファイバ、アルミナファイバ等による耐火
繊維材および粘結材からなる材料を用いることができ、
例えば品川炉材株式会社製の商品名ＣＥＲＴＥＸ−ＭＮ
Ｐや、セラミックファイバを無機、有機バインダにより
成形した品川白煉瓦株式会社製のＢＬボート等を使用す
ることができる。As the ceramic fiber as a constituent material of the sealing material 7, a material made of a refractory raw material (including graphite) such as alumina, a glass fiber, a refractory fiber material such as alumina fiber and a binder can be used.
For example, the product name CERTEX-MN manufactured by Shinagawa Furnace Co., Ltd.
It is possible to use P, a BL boat manufactured by Shinagawa White Brick Co., Ltd., or the like in which a ceramic fiber is molded with an inorganic or organic binder.
【００１５】前記シール材７は、マッドガン先端部３ａ
の内周に可及的密に嵌挿される外径とされるが、望まし
くは図２に示すようにマッドガン先端部３ａ内への挿入
方向先端側の外径が小径となるよう角度α（α＝３〜８
°、好ましくは５〜６°）のテーパを付し、その大径側
の外周面がマッドガン先端部３ａの内周面に密嵌される
寸法に形成するのがよい。The sealing material 7 is the tip portion 3a of the mud gun.
The outer diameter is such that it is fitted into the inner periphery of the mud as closely as possible, but it is desirable that the outer diameter on the tip side in the insertion direction into the mud gun tip 3a be a small diameter as shown in FIG. = 3 to 8
It is preferable that the outer peripheral surface on the large diameter side is tightly fitted to the inner peripheral surface of the tip portion 3a of the mud gun.
【００１６】したがってマッドガン３によるマッド材６
の充填に先立ってマッドガン先端部３ａ内にシール材７
を挿着しておく。この場合、シール材７の外周にテーパ
が付されていると、細い方から挿入し、太い部分がマッ
ドガン先端部３ａの内周に密着して外れることなく保持
される。Therefore, the mud material 6 by the mud gun 3
Prior to filling the inside of the mud gun, the sealing material 7
Is inserted. In this case, if the outer periphery of the seal material 7 is tapered, the seal member 7 is inserted from the thin side, and the thick portion is held in close contact with the inner periphery of the mud gun tip portion 3a without coming off.
【００１７】ついでマッドガン先端部３ａを出銑口のマ
ッドガン嵌合部４に挿入し、マッドガン先端部３ａの先
端面を出銑口のマッドガン圧着部５に付き当て（図３
示）、ついでマッドガン３によりマッド材６を圧入する
と、マッドガン先端部３ａ内を図４の矢印のように圧送
されるマッド材６がマッドガン先端部３ａの通路面積を
狭めるように存在するシール材７の後端面７ａを加圧す
ることになり、これによりシール材７がマッドガン先端
部３ａ内で前進してその先端面７ｂがマッドガン圧着部
５の面荒れ状態になじんで圧着する（図４示）。Then, the mud gun tip portion 3a is inserted into the mud gun fitting portion 4 of the tap hole, and the tip surface of the mud gun tip portion 3a is attached to the mud gun crimping portion 5 of the tap hole (see FIG. 3).
Next, when the mud material 6 is press-fitted by the mud gun 3, the mud material 6 that is pressure-fed in the mud gun tip portion 3a as shown by the arrow in FIG. 4 exists so as to narrow the passage area of the mud gun tip portion 3a. The rear end surface 7a is pressed, whereby the sealing material 7 advances in the mud gun tip portion 3a, and the tip surface 7b conforms to the surface roughened state of the mud gun crimp portion 5 and crimps it (see FIG. 4).
【００１８】この状態においてマッド材６の充填が行わ
れるので、シール材７のマッドガン圧着部５への圧着状
態がマッド材６の充填圧により継続して維持され、マッ
ドガン先端部３ａとマッドガン圧着部５との間の隙間を
シール材７が継続的に塞いでマッド材６や溶銑滓が漏出
することを確実に防止する。Since the mud material 6 is filled in this state, the crimping state of the seal material 7 to the mud gun crimping portion 5 is continuously maintained by the filling pressure of the mud material 6, and the mud gun tip portion 3a and the mud gun crimping portion 5 are maintained. The gap between the sealant and the sealant 5 is continuously closed by the sealant 7 to reliably prevent the mud 6 and the molten pig iron from leaking out.
【００１９】なお上記シール材７のマッドガン先端部３
ａ内の挿着は、予めマッドガン先端部３ａ内に挿着して
おくようにするか、あるいはマッド材６がマッドガン先
端部３ａ内に残っている場合にはシール材７を挿入する
部分のマッド材６を排除してスペースを作ったうえシー
ル材７を挿入するようにすればよい。またシール材７の
マッドガン先端部３ａ内への挿着は人手により行うほ
か、専用の装置、工具類を用いて行うようにしてもよ
い。The mud gun tip 3 of the sealing material 7
As for the insertion in a, the mud gun tip portion 3a should be inserted in advance, or if the mud material 6 remains in the mud gun tip portion 3a, the sealing material 7 is to be inserted. The material 6 may be removed to create a space and then the sealing material 7 may be inserted. The sealing material 7 may be manually inserted into the tip portion 3a of the mud gun, or by a dedicated device or tools.
【００２０】[0020]
【発明の効果】以上説明したように本発明によれば、円
筒形状に形成されたシール材をマッドガンの先端部内に
挿着させるだけでシール材の取付けが完了するので、そ
の取付け作業がきわめて迅速かつ確実に行え、マッド材
充填時にはマッドガンから圧出されるマッド材の圧力を
利用してシール材の先端面が出銑口のマッドガン圧着部
に圧着されるのでシール材とマッドガン圧着部との密着
性がよく、マッドガン圧着部の面荒れに伴うマッド材の
漏出（所謂ボタ漏れ）や溶銑滓の漏出を完全に防止する
ことができる。これによりマッド材の出銑口へのスムー
ズな充填が可能となるとともに、マッド漏れによる充填
圧力不足を生じることが解消され、出銑口内のマッド材
の組織が一定となって出銑時間のばらつきを解消するこ
とができる。As described above, according to the present invention, the mounting of the sealing material is completed only by inserting the cylindrical sealing material into the tip portion of the mud gun. It is possible to perform surely, and when the mud material is filled, the tip of the sealing material is crimped to the mud gun crimping part of the tap hole by using the pressure of the mud material which is extruded from the mud gun. Therefore, it is possible to completely prevent the mud material from leaking (so-called button leak) and the molten pig iron from leaking due to the surface roughness of the mud gun crimping portion. This enables smooth filling of mud material into the taphole and eliminates the occurrence of insufficient filling pressure due to mud leakage, resulting in a uniform mud material structure in the taphole and variations in tapping time. Can be resolved.
【図１】本発明によるシール材とマッドガン先端部との
関係を示す斜視図。FIG. 1 is a perspective view showing a relationship between a sealing material and a tip portion of a mud gun according to the present invention.
【図２】シール材の断面図。FIG. 2 is a sectional view of a sealing material.
【図３】シール材を挿着したマッドガンを出銑口のマッ
ドガン圧着部に付き当てた状態を示す断面図。FIG. 3 is a cross-sectional view showing a state in which a mud gun having a sealing material inserted therein is pressed against a mud gun crimping portion of a tap hole.
【図４】同、マッド材圧入時の状態を示す断面図。FIG. 4 is a sectional view showing a state when the mud material is press-fitted.
【図５】出銑口のマッドガン圧着部の面荒れの状態を示
す断面図。FIG. 5 is a cross-sectional view showing a roughened state of the mud gun crimping portion of the tap hole.
１ 炉壁 ３ マッドガン ３ａ マッドガン先端部 ４ マッドガン嵌合部 ５ マッドガン圧着部 ６ マッド材 ７ シール材 ７ａ 後端面 ７ｂ 先端面 1 Furnace Wall 3 Mad Gun 3a Mad Gun Tip 4 Mad Gun Fitting 5 Mad Gun Crimping 6 Mad Material 7 Sealing Material 7a Rear End 7b Tip
───────────────────────────────────────────────────── フロントページの続き (72)発明者 松 元 昭 文 東京都千代田区丸の内一丁目１番２号 日 本鋼管株式会社内 (72)発明者 高 垣 法 義 東京都千代田区丸の内一丁目１番２号 日 本鋼管株式会社内 (72)発明者 森 侯 寿 東京都千代田区丸の内一丁目１番２号 日 本鋼管株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akifumi Matsumoto 1-2 1-2 Marunouchi, Chiyoda-ku, Tokyo Nihon Steel Pipe Co., Ltd. (72) Inventor Noritaka Takagaki 1-chome, Marunouchi, Chiyoda-ku, Tokyo No. 2 Nihon Steel Pipe Co., Ltd. (72) Inventor Houju Mori 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nihon Steel Pipe Co., Ltd.
Claims (6)
閉塞用マッドガンの先端部内周に可及的密に内嵌し得る
円筒形状を有し、マッドガンから吐出するマッド材の圧
力により前進して出銑口のマッドガン圧着部に圧着する
ようにしたことを特徴とする高炉マッドガンのシール
材。1. A mud gun made of a deformable refractory material, having a cylindrical shape that can be fitted as closely as possible to the inner circumference of the tip end of a mud gun for closing the taphole of a blast furnace, and the mud material discharged from the mud gun causes A seal material for a blast furnace mud gun, which is characterized in that it is moved forward and crimped to the mud gun crimping portion of the taphole.
ル材を出銑口閉塞用マッドガンの先端部内周に可及的密
に内嵌し、マッドガンから吐出するマッド材の圧力を前
記シール材の後端面に受圧させ、その圧力によりシール
材の先端面を出銑口のマッドガン圧着部に圧接させてシ
ールするようにしたことを特徴とする高炉マッドガンの
マッド材漏出防止方法。2. A cylindrical sealing material made of a deformable refractory material is fitted into the inner periphery of the tip portion of the mud gun for closing the taphole as closely as possible, and the pressure of the mud material discharged from the mud gun is applied to the sealing material. A method for preventing leakage of mud material in a blast furnace mud gun, characterized in that the pressure is applied to the rear end surface of the blast furnace and the tip surface of the sealing material is pressed against the mud gun crimping portion of the taphole for sealing.
入方向先端側が小径となるよう３〜８°のテーパが付さ
れている請求項１記載の高炉マッドガンのシール材。3. The sealing material for a blast furnace mud gun according to claim 1, wherein said sealing material is tapered by 3 to 8 ° so that the tip side in the insertion direction into the tip portion of the mud gun has a small diameter.
小径となるよう３〜８°のテーパが付されたシール材を
用いる請求項２記載の高炉マッドガンのマッド材漏出防
止方法。4. A mud material leakage prevention method for a blast furnace mud gun according to claim 2, wherein a sealing material is used which has a taper of 3 to 8 ° so that the tip side in the insertion direction into the mud gun tip portion has a small diameter.
る請求項１または３のいずれか１項記載の高炉マッドガ
ンのシール材。5. The seal material for a blast furnace mud gun according to claim 1, wherein the seal material is made of ceramic fiber.
る請求項２または４のいずれか１項記載の高炉マッドガ
ンのマッド材漏出防止方法。6. The method for preventing mud material leakage of a blast furnace mud gun according to claim 2, wherein the sealing material is made of ceramic fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11602895A JPH08311513A (en) | 1995-05-15 | 1995-05-15 | Seal material for mud gun in blast furnace and method for preventing leakage of mud material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11602895A JPH08311513A (en) | 1995-05-15 | 1995-05-15 | Seal material for mud gun in blast furnace and method for preventing leakage of mud material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08311513A true JPH08311513A (en) | 1996-11-26 |
Family
ID=14676978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11602895A Pending JPH08311513A (en) | 1995-05-15 | 1995-05-15 | Seal material for mud gun in blast furnace and method for preventing leakage of mud material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08311513A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100419769B1 (en) * | 1999-12-18 | 2004-02-21 | 주식회사 포스코 | A supplementary tool for closing the tap hole of the blast furnace |
| KR100419771B1 (en) * | 1999-12-24 | 2004-02-21 | 주식회사 포스코 | A supplementary device for closing the tap hole of the blast furnace |
| KR20040046111A (en) * | 2002-11-26 | 2004-06-05 | 주식회사 포스코 | Assistant ring type means used for closing tap hole of blast furnace |
| KR100798064B1 (en) * | 2001-11-15 | 2008-01-28 | 주식회사 포스코 | Mud gun supporting device when emergency closing tap hole |
| KR100896605B1 (en) * | 2002-10-01 | 2009-05-08 | 주식회사 포스코 | An apparatus for clogging a tapping hole of blast furnace in emergency |
| KR101287882B1 (en) * | 2011-10-11 | 2013-07-18 | 주식회사 포스코 | Nozzle tip of mud gun using eccentric ring |
| CN103911473A (en) * | 2013-12-20 | 2014-07-09 | 唐海首燕机械有限公司 | Method for increasing service life of casthouse device mud gun mouth of blast furnace |
| CN107249785A (en) * | 2014-12-23 | 2017-10-13 | 技术资源有限公司 | The method for sealing and repairing fire resisting tap |
-
1995
- 1995-05-15 JP JP11602895A patent/JPH08311513A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100419769B1 (en) * | 1999-12-18 | 2004-02-21 | 주식회사 포스코 | A supplementary tool for closing the tap hole of the blast furnace |
| KR100419771B1 (en) * | 1999-12-24 | 2004-02-21 | 주식회사 포스코 | A supplementary device for closing the tap hole of the blast furnace |
| KR100798064B1 (en) * | 2001-11-15 | 2008-01-28 | 주식회사 포스코 | Mud gun supporting device when emergency closing tap hole |
| KR100896605B1 (en) * | 2002-10-01 | 2009-05-08 | 주식회사 포스코 | An apparatus for clogging a tapping hole of blast furnace in emergency |
| KR20040046111A (en) * | 2002-11-26 | 2004-06-05 | 주식회사 포스코 | Assistant ring type means used for closing tap hole of blast furnace |
| KR101287882B1 (en) * | 2011-10-11 | 2013-07-18 | 주식회사 포스코 | Nozzle tip of mud gun using eccentric ring |
| CN103911473A (en) * | 2013-12-20 | 2014-07-09 | 唐海首燕机械有限公司 | Method for increasing service life of casthouse device mud gun mouth of blast furnace |
| CN107249785A (en) * | 2014-12-23 | 2017-10-13 | 技术资源有限公司 | The method for sealing and repairing fire resisting tap |
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