JPH03104809A - Iron tapping hole in blast furnace - Google Patents
Iron tapping hole in blast furnaceInfo
- Publication number
- JPH03104809A JPH03104809A JP24006589A JP24006589A JPH03104809A JP H03104809 A JPH03104809 A JP H03104809A JP 24006589 A JP24006589 A JP 24006589A JP 24006589 A JP24006589 A JP 24006589A JP H03104809 A JPH03104809 A JP H03104809A
- Authority
- JP
- Japan
- Prior art keywords
- taphole
- bricks
- tapping hole
- blast furnace
- 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.)
- Pending
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title abstract description 36
- 229910052742 iron Inorganic materials 0.000 title abstract description 18
- 238000010079 rubber tapping Methods 0.000 title abstract description 10
- 239000011449 brick Substances 0.000 claims abstract description 61
- 239000011823 monolithic refractory Substances 0.000 claims abstract description 15
- 230000007774 longterm Effects 0.000 abstract 2
- 238000009415 formwork Methods 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 5
- 238000010276 construction Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 239000004570 mortar (masonry) Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Blast Furnaces (AREA)
Abstract
Description
【発明の詳細な説明】
[産業上の利用分野]
本発明は耐火物外装体を有する高炉出銑口に関し、特に
出銑口及びその周囲のレンガの損傷間隙を補修する際に
構築するのに最適な耐火物外装体を有する高炉出銑口に
関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a blast furnace taphole having a refractory exterior body, and is particularly suitable for construction when repairing a damaged gap in the taphole and the surrounding bricks. This invention relates to a blast furnace taphole having an optimal refractory exterior body.
[従来の技術コ
高炉底部の出銑口は、溶銑溶滓を抽出するところで、高
炉の周壁において唯一鉄皮が除かれ、耐火レンガが直接
外部に露出している部分である。[Conventional technology] The taphole at the bottom of the blast furnace is where hot metal slag is extracted, and is the only part of the peripheral wall of the blast furnace where the iron skin is removed and the refractory bricks are directly exposed to the outside.
第3図は従来の耐火物外装構造を有する高炉出銑口を示
す縦断面図であり、第4図はその出銑口周りのレンガの
配列を示す正面図である。FIG. 3 is a longitudinal sectional view showing a blast furnace taphole having a conventional refractory exterior structure, and FIG. 4 is a front view showing the arrangement of bricks around the taphole.
高炉底部の出銑口lOにおいては鉄皮12が省かれ、該
口の周囲にはフランジ状の鉄皮部分14が形成されてい
る。出銑口表面のアーチ状第1レンガ層22及びその内
側の第2レンガ層24は、アルミナ質の定形レンガから
なる。更に第3層より内部の皿ね出銑口の寸法に対応す
るレンガ層2Bはハイアルミナの定形レンガからなる。The iron skin 12 is omitted at the tap hole lO at the bottom of the blast furnace, and a flange-shaped iron skin portion 14 is formed around the tap. The arch-shaped first brick layer 22 on the taphole surface and the second brick layer 24 inside thereof are made of alumina shaped bricks. Furthermore, the brick layer 2B corresponding to the dimensions of the countersink taphole inside the third layer is made of high alumina shaped bricks.
またハイアルミナレ冫ガ層26の上下のレンガ層28は
カーボンの定形ブロックからなり、カーボンブロック層
28と鉄皮12との間には、不定形耐火物からなるスタ
ンプ層32か配設される。Further, the brick layers 28 above and below the high alumina brick layer 26 are made of regular blocks of carbon, and a stamp layer 32 made of a monolithic refractory is provided between the carbon block layer 28 and the iron skin 12.
出跣の湯道l6はアーチ状第1層22からハイアルミナ
レンガ層28を通り、炉内まで貫通する。湯道l6は出
銑に伴って開口と閉塞とが適当な間隔で操り返される。The protruding runner l6 passes through the arch-shaped first layer 22, the high alumina brick layer 28, and penetrates into the furnace. The runner l6 is opened and closed at appropriate intervals as the iron is tapped.
一般的に閉塞作業は、マッドガンによりマッドを湯道に
詰めることにより行われ、開孔作業は開孔機により湯道
内のマッドを穿孔することにより行われる。Generally, the closing operation is performed by filling the runner with mud using a mud gun, and the opening operation is performed by drilling the mud in the runner using a drilling machine.
このように出銑口10が鉄皮12で覆われていない為、
経時的な使用により出銑口周りのレンガ22−32に亀
裂やレンガ間目地の緩み等の損傷間隙が生じてくると、
該間隙を伝わって、出銑口10の露出レンガ表面から炉
内ガス(炉内圧3 − 4 kg/ eI12)が吹出
し、出銑作業に支障をきたす。特に、上述の如く湯道の
開口及び閉塞作業に伴って出銑口周りのレンガに望まし
くない衝撃が加わる為、該レンガには上記損傷間隙が生
じ易い。In this way, since the taphole 10 is not covered with the iron skin 12,
When the bricks 22-32 around the taphole become damaged due to use over time, such as cracks or loose joints between the bricks,
Through the gap, the furnace gas (furnace pressure 3-4 kg/eI12) blows out from the exposed brick surface of the tap hole 10, causing trouble in the tapping operation. In particular, as described above, undesirable impacts are applied to the bricks around the taphole as a result of the opening and closing of the runner, so that the bricks are susceptible to the above-mentioned damage gap.
上記亀裂及び目地の緩みを補修する為、従来の袖修方法
にあっては、出銑口10周辺の鉄皮12に設置された直
径25 − 40■の複数の圧人ノズル1g(第2図及
び第3図においては破線でそれらの一部を例示)を利用
している。炉内ガスの吹出しが認められた場合は、補修
すべきレンガ部分の見当をっけ、これに対応するノズル
l8から不定形耐火物(一般的にはモルタル)を圧入し
、亀裂、目地等の損傷間隙を塞いでいる。In order to repair the above-mentioned cracks and loosened joints, in the conventional sleeve repair method, a plurality of pressure nozzles 1g with a diameter of 25-40cm are installed on the steel shell 12 around the taphole 10 (see Fig. 2). and some of them are illustrated by broken lines in FIG. 3). If gas is found to be blowing out of the furnace, identify the brick part to be repaired, press-fit monolithic refractory material (generally mortar) through the corresponding nozzle l8, and repair cracks, joints, etc. Closes the damage gap.
また圧人ノズル18からの上記モルタルの圧入による補
修では追付かない限界の状態となった場合は、休風時に
、第1レンガ層22、第2レンガ層24、更に必要に応
じて第3のレンガ層26を解体し、損傷したレンガを同
一形状の新たな成型レンガと交換するようにしている。In addition, if the repair by press-fitting the mortar from the pressure nozzle 18 reaches the limit, the first brick layer 22, the second brick layer 24, and if necessary, the third The brick layer 26 is dismantled and the damaged bricks are replaced with new molded bricks of the same shape.
[発明が解決しようとする課題コ
上記従来の方法にあっては、しかし、交換した新たなレ
ンガと残置レンガとの整合性が悪い為、両レンガ間の幅
の広い目地が構造上の弱点となる。[Problem to be solved by the invention] In the above conventional method, however, due to poor consistency between the replaced new brick and the remaining brick, the wide joint between the two bricks becomes a structural weakness. Become.
例えば、このような整合性の悪いレンガ間の目地はモル
タルにより埋め込むが、上述の出銑口湯道I6の開口及
び閉塞に伴う衝撃によりこれらの目地にクラックが入り
やすい。この為、これらの目地が漏洩ガスにより選択的
に犯されて、同ガスの漏洩通路となってしまう。また整
合性の悪いレンガ間の目地に限らず、レンガ間の目地は
、レンガ本体と比較すれば漏洩ガスの通路になりゃすい
ことは避け難い。For example, such joints between bricks with poor alignment are filled with mortar, but cracks are likely to occur in these joints due to the impact caused by the above-mentioned opening and closing of the taphole runner I6. For this reason, these joints are selectively attacked by the leaking gas and become leakage paths for the gas. In addition, it is difficult to avoid not only joints between bricks with poor alignment but also joints between bricks that are more likely to become passages for leakage gas than the brick bodies.
本発明はかかる従来技術の欠点を解消する為になされた
ものであり、特に補修時に構築するのに最適な、ガス漏
れ抑止効果の高い耐火物外装体を有する高炉出銑口を提
供することを目的とする。The present invention has been made in order to eliminate the drawbacks of the prior art, and it is an object of the present invention to provide a blast furnace taphole having a refractory exterior body that is highly effective in preventing gas leakage and is particularly suitable for construction at the time of repair. purpose.
[課題を解決する為の手段]
上記目的を達成する為、本発明にあっては、高炉出銑口
の鉄皮よりも内側の残置レンガの間隙を埋める目地詰め
部分と、上記残置レンガから上記出銑口の露出表面まで
の層部分とを、上記出銑口において不定形耐火物を流し
込み成型した一体構遣の耐火物外装体とした。[Means for Solving the Problems] In order to achieve the above object, the present invention includes a joint filling portion that fills the gap between the remaining bricks inside the shell of the blast furnace taphole, and a joint filling portion that fills the gap between the remaining bricks and the The layer portion up to the exposed surface of the taphole was made into an integral refractory exterior body in which monolithic refractory was poured and molded in the taphole.
[作 用]
上記本発明に係るレンガ構造にあっては、残置レンガの
間隙を埋める目地詰め部分から出銑口の露出表面までが
、一体成型された固化後の不定形耐火物により占められ
る為、出銑口の露出表面及びその近傍にはレンガ目地が
存在しなくなる。[Function] In the brick structure according to the present invention, the area from the joint filling part that fills the gaps between the remaining bricks to the exposed surface of the taphole is occupied by the monolithic refractory after solidification that is integrally molded. , there are no brick joints on the exposed surface of the taphole or in its vicinity.
[実施例]
第]図は本発明に係る耐火物外装体を有する高炉出銑口
の一実施例を示す縦断面図であり、第2図はl.−i1
耐火物外装体の構築峙の中間状態を示す高炉出銑口の縦
断面図である。両図中、第3図及び第4図中の部材と同
一の部材には同一の符号が付されている。[Example] Figure 1 is a longitudinal sectional view showing an example of a blast furnace taphole having a refractory exterior body according to the present invention, and Figure 2 is a longitudinal sectional view showing an example of the blast furnace taphole having a refractory exterior body according to the present invention. -i1
FIG. 3 is a longitudinal cross-sectional view of the blast furnace taphole showing an intermediate state during construction of the refractory exterior body. In both figures, the same members as those in FIGS. 3 and 4 are given the same reference numerals.
第1図図示の如くこの耐火物外装体36は、高炉出銑口
10の鉄皮l2よりも内側の残置レンガ26、32の間
隙を埋める目地詰め部分36aと、上記残置レンガから
上記出銑口の露出表面までの層部分36bとを含み、出
銑口10において不定形耐火物を流し込み成型した一体
構造からなる。耐火物外装体36は、第3図図示のよう
な従来の構造の出銑口のレンガの損傷間隙を補修する際
に構築することができる。耐火物外装体3Gの構築は湯
道l6がマッドにより閉塞された状態において、例えば
次の手順に従って行う。As shown in FIG. 1, this refractory exterior body 36 includes a joint filler portion 36a that fills the gap between the remaining bricks 26 and 32 inside the shell l2 of the blast furnace taphole 10, and a joint filler portion 36a that fills the gap between the remaining bricks 26 and 32 from the remaining bricks to the taphole. It is made of an integral structure in which monolithic refractory is poured and molded in the taphole 10. The refractory sheath 36 may be constructed in repairing a damaged gap in the brick of a taphole in a conventional construction such as that shown in FIG. The refractory exterior body 3G is constructed in a state where the runner l6 is closed with mud, for example, according to the following procedure.
先ず、出銑口の第1及び第2レンガ層22、24を、プ
レー力等によりレンガを掘り起こすように取除く (取
外す)。第3図図示例とは異なり、不定形のレンガで出
銑口10表面を覆っているような場合は、レンガ取外し
範囲は、補修後のレンガ目地を出銑口ioの表面近傍に
存在させない為に、少なくとも鉄皮l2の内側に至るま
で、とする。また間取外し範囲は、残置レンガの損傷間
隙を検査し、その程度等を考慮しながら決定する。従っ
て例えば、レンガを鉄皮l2の内側まで取外した時点で
更に損傷の激しい部分が見出だされた場合は、更にレン
ガを掘り起こすようにする。First, the first and second brick layers 22 and 24 of the taphole are removed (removed) by using playing force or the like to dig up the bricks. Unlike the example shown in Figure 3, if the surface of the taphole 10 is covered with irregularly shaped bricks, the range of brick removal is such that the repaired brick joints will not exist near the surface of the taphole IO. At least up to the inside of the iron shell l2. In addition, the range of floor removal will be determined by inspecting the damaged gaps in the remaining bricks and taking into account the extent of the damage. Therefore, for example, if a more severely damaged part is found when the brick is removed to the inside of the iron skin 12, the brick is dug up further.
次に、出銑口10を圧入ノズル46付きの型枠42で閉
鎖し(第4図参照)、該型枠42と残置レンガとの間に
密閉空間を形成する。圧入型枠42は耐圧性の金属性枠
体からなり、耐火物外装体36の湯道16及び露出表面
の凹部38に対応するパイプ状部分及び枠部分を有する
。また圧入型枠42は出銑口周囲のフランジ状鉄皮部分
l4に適合するフランジ部44を有する。型枠42は、
そのフランジ部44を、出銑目周囲のフランジ状鉄皮部
分l4に溶接或いはボルト(図示せず)等により概ねシ
ール状態に取付けることにより、出銑口lOに固定する
。型枠42の圧人ノズル4Bは抽々のタイプの不定形耐
火物圧人装置に対応できるように、捩子48等のコネク
タ部を端部に具備しているものが望ましい。Next, the tap hole 10 is closed with a formwork 42 equipped with a press-fit nozzle 46 (see FIG. 4), and a sealed space is formed between the formwork 42 and the remaining bricks. The press-fit formwork 42 is made of a pressure-resistant metal frame, and has a pipe-shaped portion and a frame portion that correspond to the runner 16 of the refractory exterior body 36 and the recess 38 on the exposed surface. The press-fitting formwork 42 also has a flange portion 44 that fits into the flange-like steel skin portion l4 around the tap hole. The formwork 42 is
The flange portion 44 is fixed to the tap hole 10 by attaching it to the flange-shaped steel skin portion l4 around the tap hole by welding or bolts (not shown) in a generally sealed state. The presser nozzle 4B of the formwork 42 is preferably provided with a connector portion such as a screw 48 at the end so that it can be used with any type of monolithic refractory presser device.
次に、圧人ノズル46に不定形耐火物圧入装置(図示せ
ず)を接続し、該装置からノズルを介して密閉空間内に
約10一約20kg/co+2の圧で不定形耐火物34
を圧入する。この不定形耐火物34としては、例えばカ
ーボンを含むアルミナ質のモルタルを使用することがで
きる。密閉空間に供給される不定形耐火物34は、該密
閉空間を満たした後、上記の高圧力によりレンガの損傷
間隙内に強制的に押込まれる。第2図はこの時点におけ
る状態を示す図であり、不定形耐火物34は同図中矢印
で示されるようにレンガの損傷間隙に侵入する。Next, a monolithic refractory press-in device (not shown) is connected to the pressure nozzle 46, and the monolithic refractory 34 is injected into the sealed space through the nozzle at a pressure of about 10 to about 20 kg/co+2.
Press in. As the monolithic refractory 34, for example, alumina mortar containing carbon can be used. After filling the closed space, the monolithic refractory 34 supplied to the closed space is forced into the damaged gap in the bricks by the above-mentioned high pressure. FIG. 2 is a diagram showing the state at this point, and the monolithic refractory 34 has entered the damaged gap in the bricks as indicated by the arrow in the figure.
不定形耐火物34が固化した後、上記密閉空間には湯道
lBの付いた耐火物外装体36が形成される。After the monolithic refractory 34 is solidified, a refractory exterior body 36 with a runner IB is formed in the sealed space.
外装体3Bの目地詰め部分38aは上記各損傷間隙を埋
め、また層部分36bが上記残置レンガ26、32から
上記出銑口10の露出表面までを一体的に満たす。The joint filler portion 38a of the exterior body 3B fills each of the damaged gaps, and the layer portion 36b integrally fills the area from the remaining bricks 26, 32 to the exposed surface of the tap hole 10.
次に、出銑口10から圧人型枠42を取外すと、第1図
図示の本発明に係る耐火物外装体36を有する高炉出銑
口が得られる。Next, when the presser form 42 is removed from the taphole 10, a blast furnace taphole having the refractory exterior body 36 according to the present invention shown in FIG. 1 is obtained.
なお上記実施例においては、第1及び第2レンガ層22
、24(第3図参照)のみを取外して本発明に係る耐火
物外装体を構築しているが、既存レンガの取外し範囲は
上述の如く任意であり、必要に応じ更に第3レンガ層2
6の一部をも解体し、本発明に係る一体構造の耐火物外
装体を構築することも可能である。Note that in the above embodiment, the first and second brick layers 22
, 24 (see Figure 3) to construct the refractory exterior body according to the present invention, however, the range of removal of the existing bricks is arbitrary as described above, and if necessary, the third brick layer 2 may be removed.
It is also possible to disassemble a part of 6 and construct an integral refractory exterior body according to the present invention.
[発明の効果コ
本発明に係る耐火物外装体を有する高炉出銑口にあって
は、目地の存在しない一体構造耐火物外装体により、ガ
ス漏れ抑止期間を長くすることができる。従って、該部
の補修周期は長く (例えば従来0.5−1.0年であ
ったものが1.0−2.0年に)なり、また、出銑口湯
道の開口作業等の出銑作業も効率よく且つ安全に行える
ようになる。[Effects of the Invention] In the blast furnace taphole having the refractory exterior body according to the present invention, the gas leak suppression period can be extended due to the integral structure refractory exterior body having no joints. Therefore, the repair cycle for this part has become longer (for example, from 0.5 to 1.0 years in the past to 1.0 to 2.0 years), and the need for opening the taphole runner, etc. has increased. Pig work can also be carried out efficiently and safely.
第1図は本発明に係る耐火物外装体を有する高炉出銑口
の一実施例を示す縦断面図、第2図は同耐火物外装体の
構築時の中間状態を示す高炉出銑口の縦断面図、第3図
は従来の耐火物外装構造を有する高炉出銑口を示す縦断
面図、第4図はその出銑口周りのレンガの配列を示す正
面図である。
lO・・・出銑口
分 16・・・湯道
不定形耐火物
44・・・フランジ部
l2・・・鉄皮 l4・・・フランジ状鉄皮部22、2
4、26、28・・・レンガ層 34・・・36・・・
耐火物外装体 42・・・型枠46・・・ノズルFIG. 1 is a longitudinal sectional view showing an embodiment of a blast furnace taphole having a refractory exterior according to the present invention, and FIG. 2 is a longitudinal sectional view of the blast furnace taphole showing an intermediate state during construction of the refractory exterior FIG. 3 is a vertical cross-sectional view showing a blast furnace taphole having a conventional refractory exterior structure, and FIG. 4 is a front view showing the arrangement of bricks around the taphole. lO...Tapping port portion 16...Runnet monolithic refractory 44...Flange portion l2...Steel skin l4...Flanged steel skin portion 22, 2
4, 26, 28...Brick layer 34...36...
Refractory exterior body 42... Formwork 46... Nozzle
Claims (1)
める目地詰め部分と、上記残置レンガから上記出銑口の
露出表面までの層部分とを、上記出銑口において不定形
耐火物を流し込み成型した一体構造の耐火物外装体とし
たことを特徴とする高炉出銑口。A joint filling part that fills the gap between the remaining bricks inside the skin of the blast furnace taphole, and a layer part from the remaining bricks to the exposed surface of the taphole, are made of monolithic refractories at the taphole. A blast furnace taphole characterized by having a cast-molded integral refractory exterior body.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24006589A JPH03104809A (en) | 1989-09-18 | 1989-09-18 | Iron tapping hole in blast furnace |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24006589A JPH03104809A (en) | 1989-09-18 | 1989-09-18 | Iron tapping hole in blast furnace |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH03104809A true JPH03104809A (en) | 1991-05-01 |
Family
ID=17053967
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP24006589A Pending JPH03104809A (en) | 1989-09-18 | 1989-09-18 | Iron tapping hole in blast furnace |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH03104809A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014162643A1 (en) * | 2013-04-02 | 2014-10-09 | 新日鉄住金エンジニアリング株式会社 | Tap hole apparatus |
-
1989
- 1989-09-18 JP JP24006589A patent/JPH03104809A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014162643A1 (en) * | 2013-04-02 | 2014-10-09 | 新日鉄住金エンジニアリング株式会社 | Tap hole apparatus |
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