JPS63195205A - Method for charging raw material in bell type blast furnace - Google Patents
Method for charging raw material in bell type blast furnaceInfo
- Publication number
- JPS63195205A JPS63195205A JP2797087A JP2797087A JPS63195205A JP S63195205 A JPS63195205 A JP S63195205A JP 2797087 A JP2797087 A JP 2797087A JP 2797087 A JP2797087 A JP 2797087A JP S63195205 A JPS63195205 A JP S63195205A
- Authority
- JP
- Japan
- Prior art keywords
- raw material
- furnace
- armor plate
- blast furnace
- armor
- 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
- 239000002994 raw material Substances 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims description 4
- 238000001514 detection method Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052742 iron Inorganic materials 0.000 abstract description 2
- 239000000571 coke Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000005204 segregation 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、ベル式炉頂装入装置において、大ベルから落
下する原料のムーバブルアーマプレートへの衝突位置を
精度よく検出することにより、高炉内の原料分布を制御
する方法に関するものである。Detailed Description of the Invention [Industrial Application Field] The present invention is a bell-type furnace top charging device that accurately detects the collision position of raw material falling from a large bell against a movable armor plate. The present invention relates to a method for controlling the distribution of raw materials within a container.
一般にベル式炉頂装入装置においては、原料分布が所望
の形状となるように調節するためにムーバブルアーマが
設置されている。Generally, in a bell-type furnace top charging device, a movable armor is installed in order to adjust the raw material distribution to a desired shape.
第１図は、このベル式炉頂装入装置の全体図である。大
ベルホッパ内の原料９は大ベル２が開くと同時に炉内に
装入される。炉内への原料落下位置は、原料が衝突する
アーマプレート１１をもつムーバブルアーマ１の位置を
任意に変えることにより、調整可能である。このように
アーマプレートｌの設定位置は、炉内の原料分布に大き
な影響を与え、炉内ガス分布等高炉操業を左右する。FIG. 1 is an overall view of this bell-type furnace top charging device. The raw material 9 in the large bell hopper is charged into the furnace at the same time as the large bell 2 is opened. The position at which the raw material falls into the furnace can be adjusted by arbitrarily changing the position of the movable armor 1 having the armor plate 11 against which the raw material collides. As described above, the setting position of the armor plate l has a great influence on the distribution of raw materials in the furnace, and influences the operation of the blast furnace, such as the gas distribution in the furnace.
しかし、従来、大ベルからアーマプレートへの原料の落
下位置は明確に把握されていたとは言い難く、経験的に
アーマプレートの位置を設定し。However, in the past, it was difficult to say that the position where the raw material fell from the large bell to the armor plate was clearly understood, so the position of the armor plate was determined empirically.
しかるのち、ウェイト懸吊式プロフィール計６等で原料
分布を測定したり、ガスサンプラ７によって、炉内原料
８の分布を推定していた。Thereafter, the distribution of the raw material was measured using a weight-suspended profile meter 6 or the like, and the distribution of the raw material 8 in the furnace was estimated using the gas sampler 7.
このような問題点を解決するため、１高炉におけるベル
式装入方法」 （特公昭５９−４１４８１）が提案され
ている。これは原料を質点として地えた力学の式から大
ベルからの落下曲線式を求め、−これからムーバブルア
ーマの使い方をコントロールしようとするものである。In order to solve these problems, a bell-type charging method for blast furnaces (Japanese Patent Publication No. 59-41481) has been proposed. This is an attempt to determine the fall curve formula from a large bell from a mechanical formula based on the raw material as a mass point, and to control the use of movable armor from this.
しかしながら、特公昭５９−４１４８１においては、落
下曲線式に多くの不確定要因を含んでいるため、長期間
に亘ってこの式から落下曲線を推定することは困難であ
る。However, in Japanese Patent Publication No. 59-41481, the fall curve formula includes many uncertain factors, so it is difficult to estimate the fall curve from this formula over a long period of time.
具体的には、大ベル２と大ベルホッパ内原料９との摩擦
係数用は、鉱石とコークスで違ってくるし、原料の粒度
構成、さらにはライナー等の摩耗状況によっても変化す
る。さらに原料の初速度ｖｏも上記の原因で畠然変化し
てしまう、また、大ベル２の周方向に亘って原料の粒度
１重量偏析があるため、全周に亘って落下曲線を推定す
るには無理がある。Specifically, the coefficient of friction between the large bell 2 and the raw material 9 in the large bell hopper differs between ore and coke, and also changes depending on the particle size structure of the raw material and the state of wear of the liner and the like. Furthermore, the initial velocity vo of the raw material changes drastically due to the above reasons, and there is particle size 1 weight segregation of the raw material over the circumferential direction of the large bell 2, so it is difficult to estimate the falling curve over the entire circumference. It's impossible.
以上のような原因のため、原料を質点として把えた力学
の式から求めた落下曲線は実際のものとは相違し、これ
を用いた原料分布制御には限界があると言わざるを得な
い。Due to the above-mentioned causes, the drop curve obtained from the mechanical formula that considers the raw material as a mass point differs from the actual one, and it must be said that there are limits to the raw material distribution control using this.
本発明は、従来推定の城を出なかった大ベルからの落下
曲線を精度よく測定することにより、炉内原料分布を制
御し、ひいては高炉操業ｆＩｔ＆ｉを向上しようとする
ものである。The present invention aims to control the raw material distribution in the furnace and improve the blast furnace operation fIt&i by accurately measuring the falling curve from the large bell, which has not exceeded the conventional estimation.
すなりち本発明では大ベルから落下した原料がアーマプ
レートに衝突する際の衝撃力をアーマ駆動部に取り付け
られたトルク計等により検出する。この検出器からの信
号の有無によって、原料のアーマプレートへの衝突の有
無を判定でき、また検出信号の大きさからアーマプレー
トの当り位置を推定することができる。この当りとアー
マ位置から原料の落下曲線を精度よく推定することがで
きる。これらの情報に基づいて、炉内原料分布制御を行
う。In the present invention, the impact force when the raw material falling from the large bell collides with the armor plate is detected by a torque meter or the like attached to the armor drive section. Depending on the presence or absence of a signal from this detector, it is possible to determine whether or not the raw material has collided with the armor plate, and from the magnitude of the detection signal, it is also possible to estimate the impact position of the armor plate. The falling curve of the raw material can be estimated with high accuracy from this hit and the armour position. Based on this information, the raw material distribution in the furnace is controlled.
以下本発明の具体的内容を作用と共に説明する。第２図
はムーバブルアーマの平面図、第３図はその側面図であ
る。アーマプレート１１は吊り金具１２に引掛けられて
おり、吊り金具１２は鉄皮１９に上端を支持され、ブツ
シュロッドＬ３はピン１２ａによってアーマプレートの
下端を支持している。アーマプレート１１の位置の設定
はブツシュロッド１３．レバー１４、軸１５を介して駆
動リング１６を炉周方向に移動することにより行われる
。この移動は、油圧シリンダ等により行われ、またアー
マプレートは炉周方向に亘って多数設置されているため
、駆動リングは数分割して多数の油圧シリンダで数枚の
アーマプレートを同時に動かすことが多い。The specific content of the present invention will be explained below along with its operation. FIG. 2 is a plan view of the movable armor, and FIG. 3 is a side view thereof. The armor plate 11 is hung on a hanging metal fitting 12, the upper end of the hanging metal fitting 12 is supported by an iron skin 19, and the bushing rod L3 supports the lower end of the armor plate by a pin 12a. The position of the armor plate 11 is set by the bushing rod 13. This is done by moving the drive ring 16 in the furnace circumferential direction via the lever 14 and shaft 15. This movement is performed by hydraulic cylinders, etc., and since many armor plates are installed along the circumference of the furnace, the drive ring can be divided into several parts and multiple hydraulic cylinders can move several armor plates at the same time. many.
大ベルからの原料の落下は、アーマプレート１１が静止
の状態、つまり駆動リング１６を保持した状態で行われ
る。従って、原料がアーマプレートｌｌに衝突した際の
外力は、ブツシュロッド１３からレバー１４に伝わり、
軸１５にねじり変形を与える。従って、このねじり変形
量を測定できるトルク検出器１７を輌１５に設け、この
検出信号により、原料のアーマプレートｌｌへの衝突の
有無を知ることができる。The raw material is dropped from the large bell while the armor plate 11 is stationary, that is, the drive ring 16 is held. Therefore, the external force when the raw material collides with the armor plate ll is transmitted from the bushing rod 13 to the lever 14,
Torsional deformation is applied to the shaft 15. Therefore, a torque detector 17 capable of measuring the amount of torsional deformation is provided in the vehicle 15, and from this detection signal, it is possible to know whether or not the raw material has collided with the armor plate ll.
さらには吊り金具１２は上下２点支持された両端ビン１
２ａ、１２ｂ （第１図）支持構造の梁であるため、原
料のアーマプレート１１への衝突位置、つまり梁に加わ
る外力の位置によって、ブツシュロッド１３に加わる外
力が変わる。故にトルク検出器１７の検出量によって、
原料がアーマプレートに当る位置を知ることが可能であ
る。モしてアーマプレートｌｌの位置は、駆動リング１
６の移動量やレバー１４の回転角によって容易に測定可
能であるから、衝突位置を求めることができ、これと大
ベル２の下端を２次曲線等の回帰曲線で結ぶことにより
、大ベルからの原料落下曲線を求めることが可能である
。Furthermore, the hanging fitting 12 is supported at two points, upper and lower, by the bin 1 at both ends.
2a, 12b (FIG. 1) Since these are beams of the support structure, the external force applied to the bushing rod 13 changes depending on the collision position of the raw material against the armor plate 11, that is, the position of the external force applied to the beam. Therefore, depending on the amount detected by the torque detector 17,
It is possible to know where the raw material hits the armor plate. The position of the armor plate ll is determined by the drive ring 1.
6 and the rotation angle of the lever 14, the collision position can be determined, and by connecting this and the lower end of the large bell 2 with a regression curve such as a quadratic curve, it is possible to determine the collision position from the large bell. It is possible to obtain the raw material fall curve of
本発明により測定した最大トルク量とアーマプレート位
置（吊金具角度）との関係を第４図に示す０図中実線は
鉱石、破線はコークスに関するものである０例えば鉱石
の測定値に関して見れば。The relationship between the maximum torque amount measured by the present invention and the armor plate position (hanging fitting angle) is shown in FIG. 4. The solid line in FIG. 4 is for ore, and the broken line is for coke.
アーマプレート位置が■、■ではトルクは検出されず、
原料はアーマプレートに衝突していないことが容易に分
かる。■の位置で最大トルクを検出しており、アーマプ
レート最下端に衝突しており、以下アーマプレートを炉
内側へ押し出すに従い、トルク量は、はぼ線形関係で減
少している。Torque is not detected when the armor plate position is ■ or ■.
It is easily seen that the raw material does not collide with the armor plate. The maximum torque is detected at the position (2), where it collides with the lowest end of the armor plate, and as the armor plate is pushed further into the furnace, the torque amount decreases in a more or less linear relationship.
またコークスは、鉱石よりもより炉外側でアーマプレー
トと衝突していることが分かり、鉱石よりも遠方に落下
している。これはコークスの粒度が鉱石よりも大きく、
大ベル上からの初期速度が大きいことと、鉱石よりも大
ベルとの摩擦係数が小さいためと思われる。It was also found that the coke collided with the armor plate further outside the furnace than the ore, and fell further away than the ore. This is because the coke particle size is larger than the ore.
This seems to be because the initial velocity from the top of the large bell is high and the coefficient of friction with the large bell is smaller than that of the ore.
この測定結果をもとに、原料落下曲線を描いたのが第５
図である。各アーマプレート位置■〜■における原料の
当り位置は次のようにして求めた。最大トルク検出位置
（この例では鉱石で■、コークスで■の位置）でアーマ
プレート吊金具の支点であるブツシュロッドの高さに衝
突しているものと仮矩し、このトルク量をもとに順次筒
中な材料力学計算によってアーマプレートとの衝突位置
を求めることができる。このようにして求めた各アーマ
プレート位置における原料衝突位置を２次の回帰式で推
定したのが、鉱石に関して実線。Based on this measurement result, the material fall curve was drawn in the fifth step.
It is a diagram. The contact position of the raw material at each armor plate position (■) to (■) was determined as follows. It is assumed that the maximum torque detection position (in this example, the position ■ for ore and the position ■ for coke) is colliding with the height of the bush rod, which is the fulcrum of the armor plate hanging fixture, and the torque is sequentially calculated based on this torque amount. The collision position with the armor plate can be determined by in-cylinder material mechanics calculations. The raw material collision position at each armor plate position obtained in this way was estimated using a quadratic regression equation, and the solid line for ore is shown.
コークスに関して破線である。これからもコークスが鉱
石よりも遠方に飛んでいることが分かる。Dashed line for coke. From now on, we can see that coke is flying farther than ore.
また周方向に亘って多数のトルク計を付けることにより
、周方向の原料落下分布も推定できた。この情報をもと
に各アーマプレートの押し出し量を調整し、炉内原料の
周方向アンバランスも解消することができた。Furthermore, by attaching a large number of torque meters along the circumferential direction, it was also possible to estimate the distribution of material fall in the circumferential direction. Based on this information, we were able to adjust the extrusion amount of each armor plate and eliminate the circumferential unbalance of the raw materials in the furnace.
以上のように本発明により、大ベルからの原料落下位置
を精度よく推定することができるようになり、ムーバブ
ルアーマの制御効果が明確となり、高炉内の原料分布制
御が容易となった。これにより、炉内ガス流れ等高炉操
業を容易にコントロールできるようになり、ガス利用率
の向上、燃料費の低減等多大の成果を上げることができ
た。As described above, according to the present invention, it has become possible to accurately estimate the position where the raw material falls from the large bell, the control effect of the movable armor has become clear, and the raw material distribution control in the blast furnace has become easier. This has made it possible to easily control blast furnace operations such as the flow of gas inside the furnace, resulting in significant results such as improved gas utilization and reduced fuel costs.
第１図はベル式炉頂装入装置全体図、第２図はムーバブ
ルアーマ全体平面図、第３図はムーバブルアーマ全体側
面図、第４図はトルク検出例を示すグラフ、第５図は大
ベルからの落下曲線を表わす説明図である。
１・・・ムーバブルアーマ ２・・・大ベル６・・・プ
ロフィール計 ７・・・ガスサンプラ８・・・炉内原
料
９・・・大ベルホッパ内原料
１１・・・アーマプレー） １２・・・吊金具１３・
・・ブツシュロッドFigure 1 is an overall view of the bell-type furnace top charging device, Figure 2 is a plan view of the entire movable armor, Figure 3 is a side view of the entire movable armor, Figure 4 is a graph showing an example of torque detection, and Figure 5 is a large It is an explanatory view showing a falling curve from a bell. 1... Movable armor 2... Large bell 6... Profile meter 7... Gas sampler 8... Raw material in the furnace 9... Raw material in the large bell hopper 11... Armor play) 12... Hanging Metal fittings 13・
・Butschrod
Claims (1)
バブルアーマを使用して炉内に大ベルから原料を装入す
るに際し、アーマプレートに加わる外力を測定し、該測
定信号から アーマプレートへの原料衝突の有無を検出すると共に、
アーマプレートの当り位置を検出して大ベルからの落下
曲線を推定し、該検出および推定に基づいて高炉内の原
料分布を制御することを特徴とするベル式高炉における
原料装入方法。[Claims] 1. When charging raw materials into the furnace from a large bell using a movable armor having a link mechanism installed at the mouth of the blast furnace, the external force applied to the armor plate is measured, and the external force applied to the armor plate is measured. In addition to detecting the presence or absence of material collision with the armor plate from the measurement signal,
A method for charging raw materials in a bell-type blast furnace, characterized by detecting the contact position of an armor plate, estimating a falling curve from a large bell, and controlling the distribution of raw materials in the blast furnace based on the detection and estimation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2797087A JPS63195205A (en) | 1987-02-09 | 1987-02-09 | Method for charging raw material in bell type blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2797087A JPS63195205A (en) | 1987-02-09 | 1987-02-09 | Method for charging raw material in bell type blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63195205A true JPS63195205A (en) | 1988-08-12 |
Family
ID=12235740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2797087A Pending JPS63195205A (en) | 1987-02-09 | 1987-02-09 | Method for charging raw material in bell type blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63195205A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998005196A1 (en) | 1996-08-01 | 1998-02-12 | M & M Laboratory Co., Ltd. | Water-holding carrier for plants |
| US6427378B1 (en) | 1995-09-05 | 2002-08-06 | Yasuhiro Obonai | Support for cultivating plant and method of growing plant |
| JP2020015935A (en) * | 2018-07-24 | 2020-01-30 | 日本製鉄株式会社 | Method of measuring drop position of blast furnace burden, method of charging blast furnace burden, and charging system for blast furnace burden |
-
1987
- 1987-02-09 JP JP2797087A patent/JPS63195205A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6427378B1 (en) | 1995-09-05 | 2002-08-06 | Yasuhiro Obonai | Support for cultivating plant and method of growing plant |
| WO1998005196A1 (en) | 1996-08-01 | 1998-02-12 | M & M Laboratory Co., Ltd. | Water-holding carrier for plants |
| US6286254B1 (en) | 1996-08-01 | 2001-09-11 | Mebiol Inc. | Water-holding carrier for plants |
| JP2020015935A (en) * | 2018-07-24 | 2020-01-30 | 日本製鉄株式会社 | Method of measuring drop position of blast furnace burden, method of charging blast furnace burden, and charging system for blast furnace burden |
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