JPS5839711A - Opening method for tap hole of blast furnace - Google Patents
Opening method for tap hole of blast furnaceInfo
- Publication number
- JPS5839711A JPS5839711A JP13800081A JP13800081A JPS5839711A JP S5839711 A JPS5839711 A JP S5839711A JP 13800081 A JP13800081 A JP 13800081A JP 13800081 A JP13800081 A JP 13800081A JP S5839711 A JPS5839711 A JP S5839711A
- Authority
- JP
- Japan
- Prior art keywords
- mud
- round steel
- taphole
- steel bar
- tap hole
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/12—Opening or sealing the tap holes
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Blast Furnaces (AREA)
Abstract
Description
【発明の詳細な説明】 この発明は、高炉の出銑口開孔方法に関する。[Detailed description of the invention] The present invention relates to a method for opening a tap hole in a blast furnace.
さらに詳しくは、高炉の出銑作業に際しトラブルを生ず
ることなく出銑口の開孔を遂行することができる出銑口
開孔方法に関するものである。More specifically, the present invention relates to a method for opening a tap hole that can be performed without causing any trouble during tapping work in a blast furnace.
高炉から溶銑を出銑する際には出銑口を開孔しなければ
ならないが、この出銑口の開孔には従来様々の方法が用
いられており、これら従来方法を大別、列挙すれば下記
のとおりである。When tapping hot metal from a blast furnace, a tap hole must be opened, and various methods have been used to open the tap hole. The following is an example.
（イ） 出銑終了後、マッドガンにより、マッドを投射
して出銑口を閉塞し、１〜２時間軒過後出銑口開孔機を
用いて錐掘りを行った上、丸棒鋼をハンマー打撃により
打込み出銑口を貫通せしめ、て出銑する方法。(b) After tapping, the taphole is blocked by projecting mud using a mud gun, and after 1 to 2 hours of evacuation, a hole is drilled using a taphole drilling machine, and the round steel bar is hammered. A method of tapping the pig iron by driving it through the tap hole.
（ロ） 上述の如く出銑口を閉塞し、一定時間経過後出
銑口開孔機で丸棒鋼又は錐を貫通せしめ、そのまま出銑
口開孔機をセットした状態で保持しておき、所要時に丸
棒鋼等を出銑口開孔機で引抜いて出銑する方法。(b) Close the taphole as described above, and after a certain period of time, use the taphole opening machine to penetrate the round bar or drill, and keep the taphole opening machine in the set state until the required time is reached. A method of tapping a round steel bar, etc., by pulling it out with a taphole opening machine.
（ハ） 上記（イ）の方法に訃いて、丸棒鋼を全く使用
せず錐のみ使用して開孔する方法。(c) A method that differs from the method in (a) above and uses only a drill bit to drill holes without using any round steel bars.
しかしながら、上記の方法はいずれも下記のような欠点
があった。However, all of the above methods have the following drawbacks.
すなわち、（イ）および（ハ）の方法においては、出銑
口開孔時にトラブルを発生する乙とが多く、これに対す
る特効的方法がない。すなわち１．「穴切れ」、「湯壁
」等のトラブルを生じた際は、酸素ノくイブにより開孔
を行ったり、あるいは丸棒鋼を順次打込みなから出銑状
態を回復するような方法をとらねばならず、出銑作業が
甚だ面倒なものとなり、さらに多大の資材を必要とする
。That is, in methods (a) and (c), trouble often occurs when opening the tap hole, and there is no specific method for dealing with this problem. That is, 1. When problems such as "cut holes" or "walls of hot water" occur, methods must be taken to restore the tapping condition, such as drilling the holes with an oxygen nozzle or sequentially driving round steel bars. However, the tapping operation becomes extremely troublesome and requires a large amount of materials.
また、（ロ）の方法においては、上記に比べて酸素パイ
プによる開孔の必要性は減少するものの、出銑作業工程
は依然複雑であり、労力、出銑用資材の低減の効果が少
ない。In addition, in the method (b), although the need for opening with an oxygen pipe is reduced compared to the above method, the tapping process is still complicated, and the effect of reducing labor and tapping materials is small.
さらに、丸棒鋼を出銑口開孔様に嵌着せしめた状態で放
置するものであるため、放置中に溶銑の差込みにより貫
通丸棒鋼が溶損し、炉内からの溶銑滓の自然流出にょる
出銑口開孔機の溶損事故を発生することがある。また、
溶損事故に至らないまでも出銑樋からの輻射熱のために
出銑口開孔機の機′能が低下し修理−頻度が上昇する。Furthermore, since the round steel bar is left fitted in the taphole opening, the penetrating round steel bar may be damaged by melting due to the insertion of hot metal while it is being left, resulting in natural outflow of hot metal slag from the furnace. Accidents of melting and damage to the taphole drilling machine may occur. Also,
Even if it does not lead to a meltdown accident, the functionality of the taphole opening machine deteriorates due to the radiant heat from the tap runner, increasing the frequency of repairs.
従来の作業方法には上記のような欠点があり、本発明は
前記（ロ）の開孔方法を改良し、上記の欠点を完全に解
消するためになされたもので、以下その実施の一例を図
面に基いて説明する。The conventional working method has the above-mentioned drawbacks, and the present invention has been made to improve the above-mentioned hole-opening method and completely eliminate the above-mentioned drawbacks.An example of its implementation will be described below. The explanation will be based on the drawings.
本発明の、方法は、以下の如くして実施される。The method of the present invention is carried out as follows.
すなわち、高炉６から溶銑８の出銑終了後マッドガンで
マッド１を出銑ロアに投射、圧入して出銑ロアを閉塞し
たのちマッド１の内端表面近傍のみが焼成された状態で
マッドガンを取外し、出銑口開孔機８で錐掘り （ドリ
リング）を行うことなく社素シホ４≠予め開孔機にセッ
トされた丸棒鋼２をドリフタ−５の前進力と軽いハンマ
ー打撃テマツド中心部に挿通せしめたのち第１図に示す
ととく出銑口開孔機を退避させる。That is, after tapping hot metal 8 from the blast furnace 6, the mud 1 is projected and press-fitted into the tap lower with a mud gun to close the tap lower, and the mud gun is removed with only the vicinity of the inner end surface of the mud 1 fired. , without performing drilling with the taphole driller 8 ≠ The round steel bar 2 set in advance in the taphole driller 8 is inserted into the center of the taphole by the forward force of the drifter 5 and a light hammer blow. After this, the taphole opening machine is evacuated as shown in Figure 1.
この場合、出銑ロアを閉塞したマッド１は未だ硬化して
いないので、上記の如くドリフタ−５の前進力と軽いハ
ンマリングのみによシ丸棒鋼２を挿通せしめることが可
能であり、また打込み丸棒鋼２は出銑口開孔機８に固定
しなくて良いので、丸棒鋼２を挿通せしめた後の開孔機
８の退避もきわめて簡単である。開孔機８は、丸棒鋼２
の挿通後できるだけ速かに所定の待機位置に退避させて
おくことが好ましい。In this case, since the mud 1 that has closed the tap lower has not yet hardened, it is possible to insert the round steel bar 2 only by the forward force of the drifter 5 and light hammering as described above, and Since the round steel bar 2 does not need to be fixed to the tap hole puncher 8, it is extremely easy to retreat the driller 8 after the round steel bar 2 has been inserted. The drilling machine 8 is a round steel bar 2
It is preferable to retreat to a predetermined standby position as quickly as possible after the insertion.
しかる後マッド１．は炉熱により焼成硬化し、次回出銑
まで出銑口閉鎖の用を果す。次回出銑時間になれば第２
図の如く、所定の専用治具４を使用して挿通丸棒＠！１
２を引抜く。Then Mad 1. is baked and hardened by the furnace heat, and serves the purpose of closing the taphole until the next taping. Next time it is time to tap the iron, the second
As shown in the figure, insert the round rod using the specified special jig 4! 1
Pull out 2.
治具４は、丸棒鋼２の外端に保合、把持する一端と、出
銑口開孔機８のドリフタ−５に連結、固定される他端と
に２分割されているので、それぞれを丸棒鋼２外端とド
リフタ−５とに予めセットしておき、出銑作業開始時に
出銑口開孔機８を出銑ロアに近接させてセットしたのち
、チェ７等の連結手段で両者を連結して一体ならしめ、
ドリフタ−５を後退させて丸棒鋼５を引抜き、出銑を行
うものである。The jig 4 is divided into two parts: one end that is held and gripped by the outer end of the round steel bar 2, and the other end that is connected and fixed to the drifter 5 of the taphole opening machine 8. The outer end of the round steel bar 2 and the drifter 5 are set in advance, and at the start of tapping work, the taphole opening machine 8 is set close to the tapping lower, and then the two are connected by a connecting means such as a checker 7. Connect and unite,
The drifter 5 is moved backward, the round steel bar 5 is pulled out, and the iron is tapped.
本発明の出銑口開孔方法は上記の如く行われるものであ
り、この方法を利用する乙とにより下記のような効果が
得られる。The taphole opening method of the present invention is carried out as described above, and by using this method, the following effects can be obtained.
（イ） 本発明方法は、出銑口開孔機の退避ができるこ
とを特徴としているので、溶銑滓の自然流出による開孔
機の溶損事故や輻射熱に起因する機能低下等を防止し、
出銑作業に伴う一連のトラブルを根絶することができる
。(a) The method of the present invention is characterized in that the taphole drilling machine can be evacuated, so it prevents damage to the drilling machine due to natural outflow of hot metal slag and functional deterioration caused by radiant heat.
A series of troubles associated with tapping work can be eradicated.
←） 出銑口閉塞直後の未硬化マッドへ直ちに丸棒鋼を
打込むので、丸棒鋼とタールマッドとの間の気密が高め
られ、溶銑滓の自然流出の防止ができる。←) Since the round steel bar is immediately driven into the unhardened mud immediately after the taphole is closed, the airtightness between the round steel bar and the tar mud is improved, and natural outflow of hot metal slag can be prevented.
（ハ） 出銑口開孔作業工程がきわめて簡易となり、作
業の省力、出銑用資材（クロスビット、中空ロンド、酸
素パイプ、丸棒鋼等）の大幅節減、出銑時間率の向上が
可能となり、高炉炉前作業の省力、生産性の向上に大き
く寄与する０
上述の如くこの発明に係る高炉出銑口開孔方法は、マッ
ドによって出銑ロア閉塞直後、マッド１の内端表面近傍
のみが焼成された状態でマッドガンを取外し、出銑口開
孔機８によって丸棒鋼２をマッド１中に挿通し出銑口開
孔機３を退避させて丸棒鋼２のみをマッド１中に放置し
、マッド１が焼成硬化したのち必要時に該丸棒鋼セを引
抜き出銑ロアを開孔せしめることを特徴とするものであ
り、出銑口開孔機８によって丸棒鋼２をマッド１中に挿
通したのち直ちに出銑口開孔機３を所定の位置に退避さ
せることを特徴とし、しかる後出銑ロアのマッド１中に
挿通せしめた丸棒鋼２の外端に所定の治具４の一端を係
合せしめ、治具４の他端を出銑口開孔機に連結し、挿通
丸棒鋼２と出銑口開孔機８を一体とならしめ丸棒鋼２を
引抜き出銑することを特徴とするもので、大変有用であ
る。(c) The process of drilling the tap hole becomes extremely simple, making it possible to save labor, significantly reduce the amount of materials used for tapping (cross bits, hollow irons, oxygen pipes, round steel bars, etc.), and improve the tapping time rate. As described above, in the blast furnace taphole opening method according to the present invention, only the vicinity of the inner end surface of the mud 1 is closed immediately after the taphole is clogged by the mud. The mud gun is removed in the fired state, the round steel bar 2 is inserted into the mud 1 by the taphole opening machine 8, the taphole opening machine 3 is evacuated, and only the round steel bar 2 is left in the mud 1. After the mud 1 is fired and hardened, the round steel bar 2 is pulled out and a hole is opened for the taphole when necessary. It is characterized by immediately retracting the taphole opening machine 3 to a predetermined position, and then engaging one end of a predetermined jig 4 with the outer end of the round steel bar 2 inserted into the mud 1 of the tap lower. The other end of the jig 4 is connected to a tap hole opening machine, the inserted round steel bar 2 and the tap hole opening machine 8 are integrated, and the round steel bar 2 is pulled out and tapped. And it's very useful.
図面はこの発明に係る高炉出銑口開孔方法の一実施態様
を示すもので、第１図は丸棒鋼を挿通し出銑口開孔機を
退避させた状態を示す断面図、第２図は出銑口開孔作業
状態を示す説明図である。
１ マッド
２ 丸棒鋼
３ 出銑口開孔機
７ 出銑口The drawings show an embodiment of the method for opening a blast furnace taphole according to the present invention, and FIG. 1 is a cross-sectional view showing a state in which a round steel bar is inserted and the taphole opening machine is retracted, and FIG. FIG. 2 is an explanatory diagram showing a tap hole opening operation state. 1 Mud 2 Round steel bar 3 Tap hole opening machine 7 Tap hole
Claims (1)
近傍のみが焼成された状態で、マッドガンを取外し、出
銑口開孔様によって丸棒鋼をマッド中に挿通し出銑口開
孔機を退避させて丸棒鋼のみをマッド中に放置し、マッ
ドが焼成硬化したのち必要時に該丸棒鋼を引抜き出銑口
を開孔せしめることを特徴とする出銑口開孔方法。 ２ 出銑口開孔機によって丸棒鋼をマッド中に挿通した
のち直“ちに出銑口開孔機を所定の位置に退避させるこ
とを特徴とする特許請求の範囲第１項記載の出銑口開孔
方法。 ８ 出銑口のマッド中に挿通せしめた丸棒鋼の外端に所
定の治具の一端を係合せしめ、治具ａ他端を出銑口開孔
機に連結し１挿通丸棒鋼と出銑口開孔機を一体と々らし
め丸棒鋼を引抜き出銑することを特徴とする特許請求の
範囲第１項記載の出銑口開孔方法。[Scope of Claims] 1 Immediately after the taphole is blocked by the mud, with only the vicinity of the inner end surface of the mud fired, the mud gun is removed, and a round steel bar is inserted into the mud and pulled out through the taphole opening. A taphole opening method characterized by retracting the taphole opening machine and leaving only the round steel bar in the mud, and after the mud has been fired and hardened, the round steel bar is pulled out to open the taphole when necessary. . 2. The tap iron according to claim 1, characterized in that the tap hole puncher is immediately retracted to a predetermined position after the round steel bar is inserted into the mud by the tap hole puncher. Taphole opening method. 8 Engage one end of a prescribed jig with the outer end of the round steel bar inserted into the mud of the taphole, connect the other end of jig a to the taphole opening machine, and insert it once. 2. The taphole opening method according to claim 1, wherein the round steel bar and the taphole opening machine are integrated together to draw out and tap the round steel bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13800081A JPS5839711A (en) | 1981-09-01 | 1981-09-01 | Opening method for tap hole of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13800081A JPS5839711A (en) | 1981-09-01 | 1981-09-01 | Opening method for tap hole of blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5839711A true JPS5839711A (en) | 1983-03-08 |
Family
ID=15211718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13800081A Pending JPS5839711A (en) | 1981-09-01 | 1981-09-01 | Opening method for tap hole of blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5839711A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0128432A2 (en) * | 1983-06-08 | 1984-12-19 | Paul Wurth S.A. | Tap hole drilling machine for shaft furnaces |
| KR100913158B1 (en) * | 2007-11-21 | 2009-08-19 | 주식회사 포스코 | Method for opening tap hole of blast furnace and device thereof |
-
1981
- 1981-09-01 JP JP13800081A patent/JPS5839711A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0128432A2 (en) * | 1983-06-08 | 1984-12-19 | Paul Wurth S.A. | Tap hole drilling machine for shaft furnaces |
| KR100913158B1 (en) * | 2007-11-21 | 2009-08-19 | 주식회사 포스코 | Method for opening tap hole of blast furnace and device thereof |
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