JPH04247815A - Method for adjusting iron tapping speed - Google Patents
Method for adjusting iron tapping speedInfo
- Publication number
- JPH04247815A JPH04247815A JP2274691A JP2274691A JPH04247815A JP H04247815 A JPH04247815 A JP H04247815A JP 2274691 A JP2274691 A JP 2274691A JP 2274691 A JP2274691 A JP 2274691A JP H04247815 A JPH04247815 A JP H04247815A
- Authority
- JP
- Japan
- Prior art keywords
- rod
- iron tapping
- tapping
- refractory
- tapping speed
- 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
- 238000010079 rubber tapping Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title abstract description 20
- 229910052742 iron Inorganic materials 0.000 title abstract description 10
- 238000003780 insertion Methods 0.000 claims abstract description 20
- 230000037431 insertion Effects 0.000 claims abstract description 20
- 230000001681 protective effect Effects 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 2
- 239000002893 slag Substances 0.000 description 14
- 239000002184 metal Substances 0.000 description 11
- 229910052751 metal Inorganic materials 0.000 description 11
- 239000011162 core material Substances 0.000 description 6
- 229910000805 Pig iron Inorganic materials 0.000 description 3
- 238000002788 crimping Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011823 monolithic refractory Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Manufacture Of Iron (AREA)
- Blast Furnaces (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は出銑速度の調整方法に係
り、詳しくは、高炉出銑中の出銑口に耐火物系のロッド
を挿入し、出銑口の断面積を自由に変更し、出銑速度を
制御する出銑速度の調整方法に係るものである。[Industrial Application Field] The present invention relates to a method for adjusting the tapping speed, and more specifically, a refractory rod is inserted into the tap hole during blast furnace tapping to freely change the cross-sectional area of the tap hole. However, the present invention relates to a method for adjusting the tapping speed to control the tapping speed.
【０００２】0002
【従来の技術】従来から、高炉の出銑作業は大型の開孔
機と閉塞機により実施されているが、出銑口は溶銑や溶
滓によって損耗し、出銑口断面積が徐々に広くなり、溶
銑滓量が増大するため、出銑口部の炉内ガスを噴出する
ようになる。そこで、マットガン等の閉塞機により出銑
口耐火物を圧入した後、再度、出銑口開孔機により開口
し出銑させるが、この作業の度に炉内の液面レベルが変
動し、炉況が不安定なものとなり、また、高熱重筋作業
が必要となるという問題があった。[Prior Art] Traditionally, blast furnace tapping work has been carried out using large hole opening and closing machines, but the taphole is worn out by hot metal and slag, and the cross-sectional area of the taphole gradually widens. As a result, the amount of hot metal slag increases, and the gas in the furnace at the taphole begins to be blown out. Therefore, after press-fitting the taphole refractory using a plugging machine such as a mat gun, the taphole opening machine is used to open the taphole again and tap the iron. There was a problem in that the situation became unstable and heavy physical work at high temperatures was required.
【０００３】これら問題を解決する方法として、特開昭
４９−４７２０４号公報には高炉の出銑口に立上りサイ
フォン型の出銑導管を設け、サイフォンの高さを炉内圧
によって溶融鉄が上昇する以上の高さにするとともに、
サイフォンの常時溶銑が存在する位置に電磁ポンプを設
けて出銑滓を汲み上げることが提案されている。[0003] As a method to solve these problems, Japanese Patent Application Laid-open No. 49-47204 discloses that a rising siphon type tap pipe is installed at the tap hole of a blast furnace, and the height of the siphon is adjusted so that the molten iron rises depending on the furnace pressure. In addition to increasing the height of
It has been proposed that an electromagnetic pump be installed in the siphon at a position where hot metal is always present to pump out the tap iron slag.
【０００４】しかしながら、この出銑口を形成している
耐火物が溶銑滓によって損耗するので、その損耗部分に
不定形耐火物を圧入し、出銑口を開け直す作業が必要と
なり、その度にサイフォンの脱着をしなければならない
。脱の場合は溶銑滓が出ていてもいなくても良いが、着
の場合は出銑口を開孔した後、すなわち、溶銑滓が出て
いる時に圧着しなければならず、この圧着面のシ−ル技
術が未開発の為、このサイフォンは使えない。さらに、
非出銑時に溶銑がサイフォン内に凝固するという問題が
ある。[0004] However, since the refractory forming the taphole is worn out by the hot metal slag, it is necessary to press fit monolithic refractories into the worn part and reopen the taphole. The siphon must be attached and detached. In the case of stripping, it doesn't matter whether hot metal slag is coming out or not, but in the case of bonding, crimping must be done after the taphole is opened, that is, when hot metal slag is coming out, and the crimping surface must be crimped. This siphon cannot be used because the sealing technology has not yet been developed. moreover,
There is a problem that hot metal solidifies in the siphon during non-tapping.
【０００５】[0005]
【発明が解決しようとする課題】本発明は上記の問題を
解決することを目的とし、具体的には、出銑口内に芯材
や保護管等で補強した耐火物製ロッドを挿入して出銑速
度を制御して末期に生じる荒出等を阻止し、安定した出
銑を行なうことができる出銑速度の調整方法を提案する
ことを目的とする。[Problems to be Solved by the Invention] The purpose of the present invention is to solve the above-mentioned problems. Specifically, the present invention aims to solve the above-mentioned problems. The purpose of this invention is to propose a method for adjusting the tapping speed that can control the pig iron speed to prevent rough pouring that occurs at the final stage and to perform stable tapping.
【０００６】[0006]
【課題を解決するための手段】すなわち、本発明は中心
部に骨材からなる芯材若しくは外周面に保護管を設け、
補強した耐火物製ロッドを出銑中の出銑口にロッド挿入
装置により挿入し、ロッドの挿入深さ若しくは径を変更
して出銑速度を制御することを特徴とする。また、前記
ロッドを旋回可能な挿入装置により出銑口に挿入し回転
させて不均一な摩耗を防止することを特徴とする。さら
に、前記ロッドを側面に小孔を設けた中空若しくは中実
のロッドから構成し、このロッド間を接続可能な構造と
したことを特徴とする。なお、出銑速度の制御は目視に
よる判定で行なう他、混銑車や溶滓鍋等の秤量デ−タに
基づいて求められる情報によりロッドの挿入深さ若しく
は径を制御することにより行なうことができる。[Means for Solving the Problems] That is, the present invention provides a core material made of aggregate in the center or a protective tube on the outer peripheral surface,
A reinforced refractory rod is inserted into the tap hole during tapping using a rod insertion device, and the tapping speed is controlled by changing the insertion depth or diameter of the rod. Further, the rod is inserted into the tap hole and rotated by a rotatable insertion device to prevent uneven wear. Furthermore, the rod is configured to be a hollow or solid rod with a small hole provided in the side surface, and the rods are configured to be connectable. The tapping speed can be controlled by visual judgment, or by controlling the insertion depth or diameter of the rod based on information obtained from weighing data of the pig iron mixer, slag ladle, etc. .
【０００７】[0007]
【作用】以下、本発明の手段たる構成を作用とともに図
面を参照しながら説明すると、次の通りである。[Operations] Hereinafter, the construction and operation of the means of the present invention will be explained with reference to the drawings.
【０００８】なお、図１は本発明を実施する際に用いら
れる一つの装置の側面から見た一部断面を示す説明図で
あり、図２は本発明を実施する際に用いられる挿入ロッ
ドの一例を示す縦断面図であり、図３は他の実施例に用
いられる骨材を芯材とするロッドの一例を示す縦断面図
であり、図４は他の実施例に用いられる中空ロッドの構
造を示す斜視図である。Note that FIG. 1 is an explanatory diagram showing a partial cross section of one device used in carrying out the present invention as seen from the side, and FIG. FIG. 3 is a longitudinal sectional view showing an example of a rod having an aggregate core used in another embodiment, and FIG. 4 is a longitudinal sectional view of a hollow rod used in another embodiment. FIG. 3 is a perspective view showing the structure.
【０００９】図１に示すように符号１は高炉の炉体鉄皮
を示し、出銑口１２はこの炉体鉄皮１の内側の耐火れん
がを貫通している。この出銑口に出銑口耐火物１１を圧
入し、炉内熱によって焼成したところを出銑開孔機によ
って開孔したものから構成されている。As shown in FIG. 1, reference numeral 1 indicates a furnace shell of a blast furnace, and a tap hole 12 passes through refractory bricks inside the furnace shell 1. As shown in FIG. The taphole refractory 11 is press-fitted into the taphole, fired by the heat in the furnace, and then a hole is drilled by a taphole drilling machine.
【００１０】ロッド挿入装置８は、前後にロッド５を移
動する複数個のロ−ラ８ａが駆動モ−タ９により駆動さ
れ、ロッド５を回転させるロッド回転装置１０とロッド
５の角度を変更させる傾動装置１４とから構成されてお
り、旋回装置１３により出銑口前に装着、退避する。In the rod insertion device 8, a plurality of rollers 8a that move the rod 5 back and forth are driven by a drive motor 9, and a rod rotation device 10 that rotates the rod 5 changes the angle of the rod 5. It is composed of a tilting device 14, and is installed and retracted in front of the tap hole by a rotating device 13.
【００１１】上記出銑口１２にロッド５を挿入するには
、出銑口１２に図２若しくは図３に示すように耐火物１
５を保護管１６若しくは骨材１５ａで補強し、折損を防
止したロッド５をロッド挿入装置８の各ロ−ラ８ａを介
して出銑口１２内に挿入する。In order to insert the rod 5 into the taphole 12, a refractory 1 is inserted into the taphole 12 as shown in FIG. 2 or 3.
The rod 5 is reinforced with a protective tube 16 or aggregate 15a to prevent breakage, and is inserted into the tap hole 12 via each roller 8a of the rod insertion device 8.
【００１２】このロッド挿入装置８の駆動モ−タ９によ
ってロッド５の挿入、引抜を行ないロッドの挿入深さの
制御をしたり、あるいはロッド回転装置１０によってロ
ッド５や出銑口１２の不均一な摩耗を防止するため、ロ
ッド５を回転させることができるように構成する。The drive motor 9 of the rod insertion device 8 inserts and withdraws the rod 5 to control the rod insertion depth, or the rod rotation device 10 is used to control the unevenness of the rod 5 and the tap hole 12. In order to prevent excessive wear, the rod 5 is configured to be rotatable.
【００１３】ロッド５はその先端と後端とを差し込み式
などの接続式にしておけば順次継ぎ足して連続的に挿入
することも可能であり、また、旋回装置１３によって退
避させ交換することもできる。ロッド挿入装置８はロッ
ド径の変更に追随できる構造であることが好ましい。[0013] If the tip and rear end of the rod 5 are of a connecting type such as a plug-in type, it is possible to add them one by one and insert them continuously, or they can be evacuated and replaced by the rotation device 13. . It is preferable that the rod insertion device 8 has a structure that can follow changes in the rod diameter.
【００１４】出銑口の断面積が閉塞機（マットガン）ノ
ズル断面積以上になると出銑口耐火物１１が圧入できな
くなる。これを防止するため、図４に示すような中空ロ
ッド５を出銑口に挿入し、ロッドの中空部から出銑し出
銑口の拡大を防止する。[0014] When the cross-sectional area of the taphole exceeds the cross-sectional area of the nozzle of the plugger (mat gun), the taphole refractory 11 cannot be press-fitted. In order to prevent this, a hollow rod 5 as shown in FIG. 4 is inserted into the tap hole, and the tap hole is tapped from the hollow part of the rod to prevent the tap hole from expanding.
【００１５】傾動装置１４は出銑口の角度に合わすため
に用いられるものであり、傾動装置１４の上下方向に移
動することによりロッドの角度を調整する。また、樋カ
バ−６はロッド挿入装置８等を出銑樋７から流れる溶銑
の輻射熱から防ぐものであり、ロッド５が通ることがで
きるように、樋カバ−６に貫通口を設け、輻射熱を防止
する。前記ロッドの挿入深さ若しくは径の制御は、出銑
口からの溶銑の噴出状況を作業員が目視で観察し、噴出
状況が略一定になるように調整する他、出銑口から出銑
樋を経てその排出端で溶銑を受銑している混銑車又は滓
樋を経て排出される溶滓を受滓している溶滓鍋の秤量値
をもとに行なえばよく、出銑口にロッドが介在している
ため、出銑時の抵抗となり、従来のように荒出という現
象から出銑の停止に至ることが低減でき、出銑を長時間
行なうことができる。The tilting device 14 is used to match the angle of the tap hole, and by moving the tilting device 14 in the vertical direction, the angle of the rod is adjusted. In addition, the gutter cover 6 protects the rod insertion device 8 and the like from the radiant heat of the hot metal flowing from the tap hole 7, and a through hole is provided in the gutter cover 6 so that the rod 5 can pass through to prevent the radiant heat. To prevent. In order to control the insertion depth or diameter of the rod, the worker visually observes the spouting condition of hot metal from the taphole and adjusts it so that the spouting condition is approximately constant. This can be done based on the weighed value of the pig iron mixer that receives hot metal at its discharge end through the slag or the slag ladle that receives the slag that is discharged through the slag gutter. Because of the presence of the above, it becomes a resistance during tapping, and it is possible to reduce the phenomenon of excessive tapping that leads to stopping of tapping as in the past, and it is possible to perform tapping for a long time.
【００１６】以上説明した構造の出銑口周りに設けたロ
ッド挿入装置８によりロッドを挿入し、そのロッドの挿
入深さ若しくは径を変更若しくはロッドを回転させ不均
一な摩耗を防止し、出銑速度を制御すると、出銑、出銑
止等を繰り返し行なう必要がなく、炉内圧の変動が抑制
される。また、出銑時における溶滓排出作業の回数を低
減することができ、炉前の高熱重筋作業が著しく減少す
る。A rod is inserted by the rod insertion device 8 provided around the taphole having the structure described above, and the insertion depth or diameter of the rod is changed or the rod is rotated to prevent uneven wear and tap. By controlling the speed, there is no need to repeatedly perform tapping, tapping, etc., and fluctuations in furnace pressure are suppressed. Furthermore, the number of times of slag discharge work during tapping can be reduced, and the high-temperature heavy-duty work in front of the furnace is significantly reduced.
【００１７】[0017]
【発明の効果】以上詳しく説明したように、本発明は中
心部に骨材からなる芯材若しくは外周面に保護管を設け
、補強した耐火物製ロッドを出銑中の出銑口にロッド挿
入装置により挿入し、ロッドの挿入深さ若しくは径を変
更して出銑速度を制御することを特徴とする。Effects of the Invention As explained in detail above, the present invention provides a core made of aggregate in the center or a protective tube on the outer circumferential surface, and a reinforced refractory rod is inserted into the tap hole during tapping. The feature is that the rod is inserted by a device and the tapping speed is controlled by changing the insertion depth or diameter of the rod.
【００１８】本発明によれば、高炉出銑中の出銑口内に
芯材若しくは保護管により補強した耐火物製ロッドを挿
入し、出銑速度を制御するようにしたため、炉内の圧力
変動が抑制され安定操業が可能となり、また、出銑時の
溶滓排出作業の回数が少なくなるため、高熱重筋作業が
減少できる。According to the present invention, a refractory rod reinforced with a core material or a protective tube is inserted into the tap hole during blast furnace tapping to control the tap speed, thereby reducing pressure fluctuations in the furnace. In addition, the number of times of slag discharge work during tapping is reduced, so heavy heavy steel work at high temperatures can be reduced.
【図１】本発明を実施する際に用いられる一つの装置の
側面から見た一部断面を示す説明図である。FIG. 1 is an explanatory diagram showing a partial cross section of one device used in carrying out the present invention, viewed from the side.
【図２】本発明を実施する際に用いられる挿入ロッドの
一例を示す縦断面図である。FIG. 2 is a longitudinal sectional view showing an example of an insertion rod used in carrying out the present invention.
【図３】他の実施例に用いられる骨材を芯材とするロッ
ドの一例を示す縦断面図である。FIG. 3 is a longitudinal sectional view showing an example of a rod having an aggregate core used in another embodiment.
【図４】他の実施例に用いられる中空ロッドの構造を示
す斜視図である。FIG. 4 is a perspective view showing the structure of a hollow rod used in another embodiment.
１ 炉体鉄皮 ２ 耐火れんが ３ 溶銑 ４ 溶滓 ５ ロッド ６ 樋カバ− ７ 出銑樋 ８ ロッド挿入装置 ８ａ ロ−ラ ９ 駆動モ−タ １０ ロッド回転装置 １１ 出銑口耐火物 １２ 出銑口 １３ 旋回装置 １４ 傾動装置 １５ 耐火物 １５ａ 骨材からなる芯材 １６ 保護管 1 Furnace body shell 2 Firebrick 3 Hot metal 4 Slag 5 Rod 6 Gutter cover 7 Tapping trough 8 Rod insertion device 8a Roller 9 Drive motor 10 Rod rotation device 11 Taphole refractories 12 Tapping hole 13 Swivel device 14 Tilt device 15 Refractories 15a Core material made of aggregate 16 Protection tube
Claims (3)
周面に保護管を設け、補強した耐火物製ロッドを出銑中
の出銑口にロッド挿入装置により挿入し、前記ロッドの
挿入深さ若しくは径を変更して出銑速度を制御すること
を特徴とする出銑速度の調整方法。Claim 1: A reinforced refractory rod with a core made of aggregate in the center or a protective tube on the outer circumferential surface is inserted into a tap hole during tapping using a rod insertion device, and the insertion depth of the rod is A method for adjusting the tapping speed, which comprises controlling the tapping speed by changing the radius or diameter.
り出銑口に挿入し回転させて不均一な摩耗を防止するこ
とを特徴とする請求項１記載の出銑速度の調整方法。2. The method for adjusting the tapping speed according to claim 1, wherein the rod is inserted into the tap hole by a rotatable insertion device and rotated to prevent uneven wear.
若しくは中実のロッドから構成し、このロッド間を接続
可能な構造としたことを特徴とする請求項１または２記
載の出銑速度の調整方法。3. The tapping speed according to claim 1 or 2, wherein the rod is constituted by a hollow or solid rod with a small hole provided on the side surface, and the rods are connected to each other. How to adjust.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2274691A JPH04247815A (en) | 1991-01-23 | 1991-01-23 | Method for adjusting iron tapping speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2274691A JPH04247815A (en) | 1991-01-23 | 1991-01-23 | Method for adjusting iron tapping speed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04247815A true JPH04247815A (en) | 1992-09-03 |
Family
ID=12091263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2274691A Pending JPH04247815A (en) | 1991-01-23 | 1991-01-23 | Method for adjusting iron tapping speed |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04247815A (en) |
-
1991
- 1991-01-23 JP JP2274691A patent/JPH04247815A/en active Pending
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