JPS637308A - Closing method for blast furnace tap hole - Google Patents
Closing method for blast furnace tap holeInfo
- Publication number
- JPS637308A JPS637308A JP15258386A JP15258386A JPS637308A JP S637308 A JPS637308 A JP S637308A JP 15258386 A JP15258386 A JP 15258386A JP 15258386 A JP15258386 A JP 15258386A JP S637308 A JPS637308 A JP S637308A
- Authority
- JP
- Japan
- Prior art keywords
- rod
- mud
- tapping
- ceramic
- 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
- 238000000034 method Methods 0.000 title claims description 9
- 239000000919 ceramic Substances 0.000 claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- 238000010304 firing Methods 0.000 claims description 3
- 238000010079 rubber tapping Methods 0.000 abstract description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 16
- 229910052742 iron Inorganic materials 0.000 abstract description 8
- 239000002893 slag Substances 0.000 abstract description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052760 oxygen Inorganic materials 0.000 abstract description 4
- 239000001301 oxygen Substances 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- 230000000149 penetrating effect Effects 0.000 abstract description 3
- 238000001354 calcination Methods 0.000 abstract 2
- 230000008018 melting Effects 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 229910000805 Pig iron Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 235000002595 Solanum tuberosum Nutrition 0.000 description 1
- 244000061456 Solanum tuberosum Species 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 238000005245 sintering 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、高炉出銑口の閉塞方法に関する。[Detailed description of the invention] Industrial applications The present invention relates to a method for closing a blast furnace taphole.
従来の技術とその問題点
高炉出銑口は周知の如くマッドガンを使用しマッドが充
填され、このマッドが上記出銑口内で炉内及び炉壁から
の熱によって焼成され、出銑口を閉塞している。通常マ
ッドはＳ！０２、ＡＱ２０３を主成分とし、これにコー
クス、炭化珪素とバインダーとしてタールを添加した所
謂タールマッドである。このようなマッドを充填した出
銑口では、閉塞から開孔までの出銑間隔が例えば３０〜
６０分といった短い場合、出銑口内充填のマッドを炉外
壁から炉内壁に至るまで均一に焼成することは困難であ
り、口内部の乾燥、焼成不足は開孔時の生吹き、出銑時
の急激な口径拡大ひいては深度不足といった出銑口トラ
ブルを沼き、炉況悪化の原因となっている。また出銑缶
の増大及び出銑回数の増加には高品質のマットで対処す
ることができるが、出銑時間の延長、出銑回数の低減に
は材料品質面だけでは限度があり、現状の閉塞方法から
脱皮した出銑口閉塞技術の確立が望まれている。Conventional technology and its problems As is well known, a blast furnace taphole is filled with mud using a mud gun, and this mud is burned in the taphole by heat from the furnace and the furnace wall, blocking the taphole. ing. Normal mud is S! 02, AQ203 as a main component, coke, silicon carbide, and tar as a binder are added to this so-called tar mud. In a taphole filled with such mud, the tap interval from blockage to opening is, for example, 30 to 30 minutes.
If the time is short, such as 60 minutes, it is difficult to uniformly fire the mud filled inside the taphole from the outer wall of the furnace to the inner wall of the furnace. Rapid diameter expansion and taphole problems such as insufficient depth are causing the deterioration of furnace conditions. In addition, it is possible to cope with the increase in the number of tap cans and the number of times of tapping with high-quality mats, but there is a limit to extending the time of tapping and reducing the number of times of tapping due to material quality alone. It is desired to establish a taphole closure technology that is a departure from the previous closure method.
一方、操業面からも出銑口は時間の経過につれで拡大変
化するため、高炉内の造銑速度と出銑口からの出銑速度
の間で出銑滓バランスの確保が重要な課題となってくる
。このため出銑口の材料は耐摩耗性に優れたものでなけ
ればならず口径、深度の管理の出来る技術開発が望まれ
ている。On the other hand, from an operational point of view, the taphole expands and changes over time, so ensuring a balance between the tap iron production rate in the blast furnace and the tapping rate from the taphole is an important issue. It's coming. For this reason, the material for the taphole must have excellent wear resistance, and there is a need for technological development that can control diameter and depth.
このような問題を解決するため、出銑口を溶銑、溶滓に
対する化学的安定性と耐摩耗性を同時に満足する緻密な
セラミック管から構成することが考えられる。In order to solve these problems, it is conceivable to construct the tap hole from a dense ceramic tube that satisfies chemical stability against hot metal and slag and wear resistance at the same time.
本発明者は出銑口のセラミック化を目的として鋭意研究
を重ね、その過程で出銑口を一時的に閉塞したり、ある
いは口径を絞ったりすることで炉内残銑レベルを回復さ
せ、再び口径を大きくし長時間の出銑を続ける技術を確
立することに成功した。The inventor of the present invention has carried out extensive research with the aim of making the taphole a ceramic material, and in the process, temporarily blocking the taphole or narrowing the diameter will restore the level of residual pig iron in the furnace, and once again. They succeeded in establishing a technology to increase the diameter and continue tapping iron for a long time.
問題点を解決するための手段
本発明は、出銑ロヘマツドを充填し、このマッドの焼成
中に、該マット内に、スチールロッドを心棒として内蔵
するセラミックロッドを貫通保持させ、このセラミック
ロッドの後端に、セラミック製バルブ閤構を備えたこと
を特徴とする高炉出銑口の閉塞方法に係る。Means for Solving the Problems The present invention is characterized in that a tap iron mud is filled, and during the firing of this mud, a ceramic rod having a steel rod as a mandrel is penetrated and held in the mat, and after this ceramic rod is filled. The present invention relates to a method for closing a blast furnace taphole, characterized in that the end thereof is provided with a ceramic valve locking structure.
作 用
本発明による閉塞方法によれば、出銑口を開孔すると、
開孔された出銑口は、溶銑、溶滓に対し化学的に安定で
且つ耐摩耗性のよい中空セラミックロッドから構成され
るので、従来法でみられるような、材料の焼結不足によ
る生吹き、出銑時の急激な口径拡大、炉内での深度不足
といったトラブルは一切なくなり、更に出銑口の拡大が
ないため出銑滓バランスが確保され長時間出銑が可能と
なる。更にまたセラミック類のバルブ機構の操作で一時
的にバルブを閉塞したりあるいは口径を絞ったりするこ
とによって炉内残銑レベルを回復させることも可能とな
り、１日の出銑回数を１回にすることもできる。According to the closing method according to the present invention, when the taphole is opened,
The drilled taphole is made of a hollow ceramic rod that is chemically stable against hot metal and molten slag and has good wear resistance, so it does not cause problems caused by insufficient sintering of the material, which occurs in conventional methods. Problems such as sudden diameter expansion during blowing and tapping, and insufficient depth in the furnace are completely eliminated.Furthermore, since there is no expansion of the tap hole, the balance of the tap iron slag is ensured and long-term tapping is possible. Furthermore, by operating the ceramic valve mechanism, it is possible to temporarily close the valve or narrow the diameter to restore the residual pig iron level in the furnace, reducing the number of taps per day to one. can.
実 施 例
以下に本発明の一実施例を添附図面にもとづき説明する
と次の通りである。Embodiment An embodiment of the present invention will be described below based on the accompanying drawings.
本発明閉塞方法に於ては、最初に炉壁（１）を貫通する
出銑口（２）に、常法通りマッドガン（図示せず）の適
用のもとにマット（３）が充填され、次にこのマッド（
３）の焼成中、例えば５〜１５分経過後に、開孔Ｒ（図
示せず）の適用のもとに、スチールロッド（４）を心棒
として内蔵するセラミックロッド（５）が、マッド（３
）内に打込まれ、これに貫通保持される。第１因にマッ
ド（３）の充填状況が、また第３図に、セラミックロッ
ド（５）の貫通保持状況が、それぞれ示されている。な
おセラミックロッド（５）の打込みに先立ち、第２図に
示すようにマット（３）をドリル（６）の適用のもとに
芋掘しておくことができる。このような芋掘により打込
み精度の向上を、セラミックロッド（５）の損閤防止を
同時に達成できる。芋掘の深さは、炉壁（１）の厚みに
よっても異なるが、炉壁厚みの１／２〜１／３例えば１
．５〜２．Ｏｍ程度が適当である。セラミックロッド（
５）の心棒を構成するスチールロッド（４）の先端には
、セラミックロッド（５）の先端保護及び打込み時の先
導を目的として、円錐状の先端ヘッド（４ａ）を形成で
きる。セラミックロッド（５）の成形原料としては、溶
銑、溶滓に対する化学的安定性と耐摩耗性が同時に得ら
れるような材質のものであればよく、例えばＡ Ｑ ２
０３、ＭＱ○、ムライト、ＺｒＯ２、ＳＩＣ，Ｓ！０２
、黒鉛等を用い得る。In the closure method of the present invention, the tap hole (2) penetrating the furnace wall (1) is first filled with matte (3) under the application of a mud gun (not shown) in the usual manner; Next, this mud (
During the firing of step 3), for example after 5 to 15 minutes, the ceramic rod (5), which incorporates the steel rod (4) as a mandrel, is heated to the mud (3
) and is held through it. The first factor is the filling condition of the mud (3), and FIG. 3 shows the penetrating and holding condition of the ceramic rod (5). In addition, prior to driving the ceramic rod (5), the mat (3) can be drilled using a drill (6) as shown in FIG. By this kind of digging, it is possible to simultaneously improve the driving accuracy and prevent loss of the ceramic rod (5). The depth of the potato digging varies depending on the thickness of the hearth wall (1), but for example 1/2 to 1/3 of the hearth wall thickness.
．． 5-2. Approximately Om is appropriate. Ceramic rod (
A conical tip head (4a) can be formed at the tip of the steel rod (4) constituting the mandrel in 5) for the purpose of protecting the tip of the ceramic rod (5) and guiding it during driving. The raw material for forming the ceramic rod (5) may be any material as long as it has chemical stability against hot metal and molten slag and wear resistance at the same time, such as AQ2.
03, MQ○, Mullite, ZrO2, SIC, S! 02
, graphite, etc. can be used.
マッド（３）内に貫通保持されたセラミックロッド（５
）の後端には、第４図に示されるようにセラミック類の
バルブ機構〈７）が備えられ、このバルブ機構（７）の
備付けにより、出銑口（２）の閉塞を完了する。このバ
ルブ機構（７）は図示のように、セラミック裂端末管（
８）を介してセラミックロッド（５）の後端に備えるこ
とが便利であり、端末管（８）は例えばレンガ積みされ
た固定部（９）により炉壁（１）に固定され、更に必要
に応じ無機系の適宜の結合剤を用いてセラミックロッド
（５）の後端に結合される。バルブ殿構（７）としては
、開度を無段階又は多段階的に制御できるような構成の
ものを用いることが好ましい。A ceramic rod (5) held through the mud (3)
) is equipped with a ceramic valve mechanism (7) as shown in FIG. 4, and by installing this valve mechanism (7), the tap hole (2) is completely closed. This valve mechanism (7) is connected to a ceramic fissure end tube (
8) at the rear end of the ceramic rod (5), the terminal tube (8) being fixed to the furnace wall (1), for example by means of a brickwork fixing part (9), and furthermore as required. It is bonded to the rear end of the ceramic rod (5) using a suitable inorganic bonding agent. As the valve structure (7), it is preferable to use one having a structure in which the degree of opening can be controlled steplessly or in multiple steps.
出銑に際しては、第５図に示されるように酸素ランスバ
イブ（１０）を用い、これをバルブ機構（７）から端末
管（８）内に挿し込み、スチールロッド（４）を溶解さ
せると、セラミックロッド（５）は中空管状となり、よ
って出銑口は開孔される。When tapping, as shown in Fig. 5, an oxygen lance vibrator (10) is used, which is inserted into the terminal pipe (8) through the valve mechanism (7) to melt the steel rod (4). The ceramic rod (5) has a hollow tubular shape, so that the tap hole is opened.
而して出銑は中空管状のセラミックロッド（５）の中空
部（５ａ）を通じて行なわれ、セラミックロッド（５）
の持つ溶銑、溶滓に対する化学的安定性と耐摩耗性によ
り出銑中に於ける出銑口の拡大はなくなり、安定した出
銑を保つことができる。Therefore, the tapping is performed through the hollow part (5a) of the hollow tubular ceramic rod (5).
Due to its chemical stability against hot metal and molten slag and wear resistance, the tap hole does not expand during tapping, and stable tapping can be maintained.
更に残銑レベルの下った場合は一時的にバルブ機構（７
）を絞って炉内の残銑レベルを回復させることにより、
長時間出銑を続けることができる。If the residual pig iron level drops further, the valve mechanism (7
) to restore the residual pig iron level in the furnace.
It is possible to continue tapping iron for a long time.
更にバルブ別構（７）を完全閉塞した場合でも、セラミ
ックロッド（５）の中空部（５ａ）内の溶滓を、第５図
に示すｙｎ孔と同様に酸素ランスバイブを用いて溶解す
ることにより再開孔でき、安定した出銑が可能となる。Furthermore, even if the separate valve structure (7) is completely closed, the molten slag in the hollow part (5a) of the ceramic rod (5) can be melted using an oxygen lance vibrator in the same way as in the yn hole shown in Fig. 5. This allows the hole to be reopened and stable tapping becomes possible.
効 果 本発明閉塞方法によれば、次の通りの効果が得られる。effect According to the closure method of the present invention, the following effects can be obtained.
ｉ） 出銑口径と深度が常に一定に保たれ出銑が安定す
る。i) The tap diameter and depth are always kept constant and the tap is stable.
１１） 出銑口の摩耗が殆んどないので、長時間出銑
が可能となり、出銑回数が１日に１回といった連続出銑
操業が可能となる。11) Since there is almost no wear on the taphole, it is possible to tap the iron for a long time, and continuous tapping operation such as once a day is possible.
ｉｉｉ ） 閉塞、開孔操作が容易となり、出銑労動
負荷を低減し得る。iii) Closing and opening operations become easier, and the labor load for tapping can be reduced.
ｉｖ ） 出銑口耐火物の使用量を削減できる。iv) The amount of taphole refractories used can be reduced.
第１図乃至第４図は本発明の一実施状況を工程順に示す
概略説明図、第５図は開孔状況を示す概略説明図である
。
図に於て、（１）は炉壁、（２）は出銑口、（３）はマ
ッド、（４）はスチールロッド、（５）はセラミックロ
ッド、（６）はドリル、（７）はバルブ機構、（１０）
は酸素ランスバイブである。
（以 上）
第４図
第５図FIGS. 1 to 4 are schematic explanatory diagrams showing one implementation state of the present invention in the order of steps, and FIG. 5 is a schematic explanatory diagram showing a hole opening state. In the figure, (1) is the furnace wall, (2) is the taphole, (3) is the mud, (4) is the steel rod, (5) is the ceramic rod, (6) is the drill, and (7) is the Valve mechanism, (10)
is an oxygen lance vibe. (That's all) Figure 4 Figure 5
Claims (1)
、該マッド内に、スチールロッドを心棒として内蔵する
セラミックロッドを貫通保持させ、このセラミックロッ
ドの後端に、セラミック製バルブ機構を備えたことを特
徴とする高炉出銑口の閉塞方法。(1) Fill the taphole with mud, and while the mud is firing, a ceramic rod with a built-in steel rod as a mandrel is penetrated and held in the mud, and a ceramic valve mechanism is attached to the rear end of the ceramic rod. A method for closing a blast furnace taphole, characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15258386A JPS637308A (en) | 1986-06-27 | 1986-06-27 | Closing method for blast furnace tap hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15258386A JPS637308A (en) | 1986-06-27 | 1986-06-27 | Closing method for blast furnace tap hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS637308A true JPS637308A (en) | 1988-01-13 |
Family
ID=15543635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15258386A Pending JPS637308A (en) | 1986-06-27 | 1986-06-27 | Closing method for blast furnace tap hole |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS637308A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01127611A (en) * | 1987-11-09 | 1989-05-19 | Kawasaki Steel Corp | Method for plugging iron tapping hole in blast furnace |
| FR2630130A1 (en) * | 1988-04-18 | 1989-10-20 | Jasniak Romain | Device and process for closing the casting hole of a blast furnace |
| US4909487A (en) * | 1988-02-03 | 1990-03-20 | Dango & Dienenthal Maschinenbau Gmbh | Process and notch gun for closing the tapholes of furnaces |
| WO1994025630A1 (en) * | 1993-04-28 | 1994-11-10 | Paul Wurth S.A. | Method of forming a taphole flow channel |
| DE102008036790A1 (en) | 2008-08-07 | 2010-02-11 | Tmt Tapping-Measuring-Technology Gmbh | Tapping channel for the discharge of iron and metal melts and liquid slag from metallurgical containers, in particular blast furnaces and furnaces |
-
1986
- 1986-06-27 JP JP15258386A patent/JPS637308A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01127611A (en) * | 1987-11-09 | 1989-05-19 | Kawasaki Steel Corp | Method for plugging iron tapping hole in blast furnace |
| US4909487A (en) * | 1988-02-03 | 1990-03-20 | Dango & Dienenthal Maschinenbau Gmbh | Process and notch gun for closing the tapholes of furnaces |
| FR2630130A1 (en) * | 1988-04-18 | 1989-10-20 | Jasniak Romain | Device and process for closing the casting hole of a blast furnace |
| WO1994025630A1 (en) * | 1993-04-28 | 1994-11-10 | Paul Wurth S.A. | Method of forming a taphole flow channel |
| DE102008036790A1 (en) | 2008-08-07 | 2010-02-11 | Tmt Tapping-Measuring-Technology Gmbh | Tapping channel for the discharge of iron and metal melts and liquid slag from metallurgical containers, in particular blast furnaces and furnaces |
| DE102008036790B4 (en) * | 2008-08-07 | 2014-05-15 | Tmt Tapping-Measuring-Technology Gmbh | Tapping channel for the discharge of iron and metal melts and liquid slag from metallurgical containers, such as blast furnaces and furnaces |
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