JPH11199019A - Turning chute for putting in auxiliary material - Google Patents
Turning chute for putting in auxiliary materialInfo
- Publication number
- JPH11199019A JPH11199019A JP152298A JP152298A JPH11199019A JP H11199019 A JPH11199019 A JP H11199019A JP 152298 A JP152298 A JP 152298A JP 152298 A JP152298 A JP 152298A JP H11199019 A JPH11199019 A JP H11199019A
- Authority
- JP
- Japan
- Prior art keywords
- turning
- chute
- auxiliary material
- tapping
- tip
- 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
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Chutes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、副原料投入用旋回
シュートに係わり、特に、転炉、電気炉、取鍋等、大容
量の溶融金属精錬容器から別容器へ溶融金属を移送する
際に、該溶融金属へ精錬用副原料を効率良く投入する技
術に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a revolving chute for feeding auxiliary materials, and more particularly to a method for transferring molten metal from a large-capacity molten metal refining vessel, such as a converter, an electric furnace, a ladle, to another vessel. The present invention also relates to a technique for efficiently introducing auxiliary materials for refining into the molten metal.
【０００２】[0002]
【従来の技術】製鋼工場においては、従来より、精錬容
器に保持した溶鋼の精錬を効率良く行うため、出鋼時
に、該溶鋼に精錬用副原料（溶鋼やスラグの還元剤、酸
化剤、組成調整剤等であり、以下、単に副原料という）
を投入することがある。その際、投入された副原料は、
十分に撹拌されるように処置され、その投入歩留（例え
ば、（有効使用量／投入量）×１００で表わす）の向上
が図られていた。ところが、溶鋼より比重の軽い副原料
（例えば、Ｆｅ−Ｓｉ、Ａｌ等の脱酸材）は、溶鋼中に
溶解する前に、溶鋼上に存在するスラグにトラップさ
れ、溶鋼上に浮上した状態であることが多い。そこで、
現在は、副原料を投入するシュートの先端を水平方向に
旋回させることによって、出鋼時に他の容器との間で生
じている溶鋼流に、該副原料を直接当てるようにして接
触機会を増し、前記投入歩留を高めることが行われてい
る。2. Description of the Related Art Conventionally, in a steelmaking plant, in order to efficiently perform refining of molten steel held in a refining vessel, at the time of tapping, the molten steel is subjected to refining auxiliary materials (a reducing agent, an oxidizing agent, Modifier, etc., hereinafter simply referred to as auxiliary material)
May be input. At that time, the added auxiliary material is
The treatment was carried out so as to be sufficiently stirred, and the input yield (for example, represented by (effective use amount / input amount) × 100) was improved. However, the auxiliary material having a lower specific gravity than the molten steel (for example, a deoxidizing material such as Fe-Si or Al) is trapped in the slag existing on the molten steel before being dissolved in the molten steel, and floated on the molten steel. There are many. Therefore,
At present, by turning the tip of the chute into which the auxiliary material is charged in a horizontal direction, the auxiliary material is directly applied to the molten steel flow generated between other containers during tapping, thereby increasing the chance of contact. In order to increase the input yield, it has been carried out.
【０００３】しかしながら、転炉のような容量の大きい
容器から取鍋に出鋼する場合には、出鋼の開始時と終了
時で該容器の傾動角が大きく変化し、出鋼流の軌跡が変
わる。また、出鋼孔の溶損により、該出鋼孔の断面積や
断面形状が変化することによっても出鋼流の軌跡が変わ
る。そのため、従来の旋回シュートを用いたのでは、出
鋼流に副原料が常時当たるとは限らず、副原料投入歩留
が所望の値（理想では、ほぼ１００％）にならないとい
う問題があった。However, when tapping a ladle from a vessel having a large capacity such as a converter, the tilt angle of the vessel greatly changes at the start and end of tapping, and the trajectory of the tapping flow changes. change. Further, the trajectory of the tapping flow also changes due to a change in the cross-sectional area or cross-sectional shape of the tapping hole due to erosion of the tapping hole. Therefore, if the conventional swirling chute is used, there is a problem that the auxiliary material does not always hit the tapping flow, and the auxiliary material input yield does not reach a desired value (ideally, almost 100%). .
【０００４】[0004]
【発明が解決しようとする課題】本発明は、かかる事情
に鑑み、従来から使用している旋回シュートに簡単な工
夫を加えるだけで、溶融金属の出湯流の軌跡が変化して
も、副原料が確実に該出湯流に当る副原料投入用旋回シ
ュートを提供することを目的としている。SUMMARY OF THE INVENTION In view of the foregoing, the present invention has been made in consideration of the above-mentioned problems. It is an object of the present invention to provide a revolving chute for charging an auxiliary material, which surely hits the tapping flow.
【０００５】[0005]
【課題を解決するための手段】発明者は、上記目的を、
旋回シュートの構造に簡単で、且つ安価な改良を加える
だけで達成することに鋭意努力し、その成果を本発明と
して完成した。すなわち、本発明は、精錬容器から取鍋
へ出湯される溶融金属の流に精錬用副原料を投入する旋
回シュートであって、前記旋回シュートを、上下方向の
傾斜角が一定で、一端を中心とし、他端を水平方向に旋
回可能な旋回部と、該旋回部の前記他端に連結され、そ
の上下方向の傾斜角を変更自在とした先端部とで形成さ
せてなることを特徴とする副原料投入用旋回シュートで
ある。Means for Solving the Problems The inventor has set forth the above object,
The present inventors have made intensive efforts to achieve a simple and inexpensive improvement to the structure of the turning chute, and have completed the results as the present invention. That is, the present invention relates to a revolving chute for feeding a refining auxiliary material into a flow of molten metal discharged from a refining vessel to a ladle, wherein the revolving chute has a constant vertical inclination angle, and is centered at one end. The other end is formed by a turning part capable of turning in the horizontal direction, and a tip part which is connected to the other end of the turning part and whose tilt angle in the vertical direction can be changed freely. This is a turning chute for charging auxiliary materials.
【０００６】また、本発明は、前記先端部の上下方向の
傾斜角を変更するシリンダを備えたり、あるいは前記先
端部に、該副原料の通過促進手段を追設したことを特徴
とする副原料投入用旋回シュートである。さらに、本発
明は、前記副原料の通過促進手段を、前記先端部内の副
原料通路に沿て気体を吹込む気体噴射ノズルであること
を特徴とする副原料投入用旋回シュートである。Further, the present invention is characterized in that the auxiliary material is provided with a cylinder for changing the vertical inclination angle of the tip portion, or the auxiliary material is provided with a passage promoting means at the tip portion. It is a turning chute for throwing. Further, the present invention is a turning chute for feeding an auxiliary material, wherein the means for promoting the passage of the auxiliary material is a gas injection nozzle which blows gas along an auxiliary material passage in the distal end portion.
【０００７】加えて、本発明は、前記気体を、不活性ガ
スとしたり、あるいは前記溶融金属を溶鋼としてなるこ
とを特徴とする副原料投入用旋回シュートでもある。本
発明によれば、既設の旋回シュートに、その上下方向の
傾斜角を自在に変更できる先端部を連設したので、溶融
金属の出湯初期と末期とで精錬容器の傾転角を変更して
も、該先端部の傾斜角も変化させられるようになる。そ
の結果、出湯流が取鍋内に落下する位置に追随して、副
原料の落下位置を調整することが可能となり、該出湯流
と投入副原料とが混ざり合い、副原料の投入歩留が向上
するようになる。また、該先端部には、副原料の通過を
促進させる加速手段も設けるようにしたので、上記効果
は一層促進される。[0007] In addition, the present invention is also a turning chute for charging an auxiliary material, wherein the gas is an inert gas or the molten metal is a molten steel. According to the present invention, the tip of the existing turning chute, which can freely change the tilt angle in the vertical direction, is continuously provided, so the tilt angle of the refining vessel is changed between the initial stage and the final stage of molten metal tapping. Also, the inclination angle of the tip can be changed. As a result, it becomes possible to adjust the falling position of the auxiliary material by following the position where the tapping water falls into the ladle, and the tapping water flow and the input auxiliary material are mixed, and the input yield of the auxiliary material is reduced. Be improved. In addition, since the leading end is provided with an accelerating means for accelerating the passage of the auxiliary material, the above effect is further promoted.
【０００８】[0008]
【発明の実施の形態】以下、発明をなすに至った経緯も
まじえ、本発明の実施形態を、製鋼工場の転炉で精錬し
た溶鋼を取鍋に出鋼する際に、該溶鋼に副原料として金
属アルミニウムを投入する例で説明する。精錬容器の転
炉は、正立した状態で精錬を行い、所定の目標成分に到
達したことを確認後、炉体を傾動し、炉の肩部に設けら
れた出鋼孔を通じて炉下に配置された取鍋に出鋼する。
転炉の上端には原料である溶銑やスクラップを装入し、
また、精錬時に発生するガスを排出するための炉口が設
けられているので、出鋼時に過度に傾動すると、炉口か
ら溶鋼やスラグが溢れ出て操業トラブルを来してしま
う。そこで、通常は、出鋼開始時には傾動角を小さく
し、出鋼の進行に伴って傾動角を大きくしている。その
ため、転炉の出鋼孔から排出される溶鋼流の軌跡は、転
炉の傾動角に応じて変動する（図２、図３参照）。従来
は、この溶鋼流に、傾斜角の固定した旋回シュート（図
示せず）を用いて副原料を投入していたので、副原料
は、溶鋼流落下位置に直接当たることもあるし、取鍋内
のスラグ面上に落下していた。これでは、投入した副原
料の前記した投入歩留が不安定になることが避けられな
い。ちなみに、従来法によるＡｌ歩留は各チャージを平
均して３３％程度であった。BEST MODE FOR CARRYING OUT THE INVENTION In consideration of the circumstances that led to the invention, the present invention will be described in detail below. When the molten steel refined in a converter of a steelmaking plant is put out to a ladle, an auxiliary material is added to the molten steel. Will be described with an example in which metal aluminum is charged. The converter in the refining vessel performs refining in an upright state, after confirming that the target components have been reached, tilts the furnace body and places it under the furnace through a tap hole provided on the shoulder of the furnace. Tapping into the ladle.
At the top of the converter, hot metal and scrap as raw materials are charged,
Further, since a furnace port for discharging gas generated at the time of refining is provided, if the steel plate is tilted excessively at the time of tapping, molten steel or slag overflows from the furnace port, causing an operation trouble. Therefore, usually, at the start of tapping, the tilt angle is reduced, and as the tapping progresses, the tilt angle is increased. Therefore, the trajectory of the molten steel flow discharged from the tapping hole of the converter fluctuates according to the tilt angle of the converter (see FIGS. 2 and 3). Conventionally, the auxiliary raw material has been introduced into the molten steel flow using a swivel chute (not shown) having a fixed inclination angle. Therefore, the auxiliary raw material may directly hit the molten steel flow drop position, Had fallen on the inside slag surface. In this case, it is inevitable that the above-mentioned yield of the added auxiliary material becomes unstable. Incidentally, the Al yield by the conventional method was about 33% on average for each charge.
【０００９】本発明は、かかる状況を打破し、常に投入
する副原料が直接に溶鋼流落下位置に落下できるように
したものであり、具体的には、図１に示すような構造の
旋回シュートである。すなわち、本発明に係る旋回シュ
ート５は、転炉の近傍に固定したフレーム１５に支持さ
れ、旋回用モータ９で回転自在にした傾斜角一定の旋回
部１１と、該旋回部１１の先端に連結され、その傾斜角
を変更自在とした先端部１２とで形成されている。この
旋回部１１と先端部１２との連結部１６は、ピン等によ
って軸支された構造になっており、自在に屈曲が可能で
ある。そして、この連結部１６を中心にして、先端部１
２の旋回部１３に対する上下方向の傾斜角を変化させる
ように、図１に示す状態でシリンダ１０が設けてある。
従って、溶鋼流４の軌跡の変化に応じこのシリンダ１０
を操作し、前記傾斜角を変更すれば、副原料１４を溶鋼
流４の所望位置に当てることができるのである。The present invention is intended to overcome such a situation and to allow the auxiliary material to be always supplied to directly fall to the molten steel flow falling position. Specifically, the turning chute having the structure shown in FIG. It is. That is, the turning chute 5 according to the present invention is supported by a frame 15 fixed in the vicinity of the converter, and is connected to a turning portion 11 having a fixed inclination angle and rotatable by a turning motor 9, and a tip of the turning portion 11. And a tip portion 12 whose inclination angle can be freely changed. The connecting portion 16 between the turning portion 11 and the tip portion 12 has a structure supported by a pin or the like, and can be freely bent. Then, with the connecting portion 16 as a center, the tip 1
The cylinder 10 is provided in the state shown in FIG. 1 so as to change the vertical inclination angle with respect to the second turning portion 13.
Therefore, according to the change of the trajectory of the molten steel flow 4, this cylinder 10
Is operated to change the inclination angle, the auxiliary material 14 can be applied to a desired position of the molten steel flow 4.
【００１０】なお、この旋回シュート５は、通常、鋼製
であり、しかも作業環境の点で筒状であることが好まし
いが、セラミック製であっても良く、形状も上面が解放
されていても良い。先端部１２の傾斜角の変更手段とし
ては、前記シリンダ１０に限らず、ロッドやチェーンに
よって吊下げる構造等、公知の手段が使用できる。ま
た、先端部１２は、連結部１６を中心に上下方向に傾斜
可能であるが、通常の精錬装置では、旋回部１１の中心
軸の延長線より上方に０〜２０°の範囲で傾斜させて使
用すれば足る。その理由は、以下の通りである。The revolving chute 5 is usually made of steel and is preferably cylindrical in view of the working environment. However, it may be made of ceramic, and the shape and the upper surface may be open. good. The means for changing the inclination angle of the distal end portion 12 is not limited to the cylinder 10 but may be any known means such as a structure suspended by a rod or a chain. The tip portion 12 can be tilted up and down around the connecting portion 16, but in a normal refining device, the tip portion 12 is tilted at an angle of 0 to 20 ° above the extension of the central axis of the turning portion 11. It is sufficient if used. The reason is as follows.
【００１１】従来の副原料投入シュートは、上下方向に
４５〜６０°の傾斜角を有しており、その旋回による副
原料落下位置の水平面上の軌跡は、図４に記号Ａで示す
ように、シュート旋回中心を中心とした円弧状となる。
これに対して出鋼流の落下位置の軌跡は、図４のＣのよ
うな直線的な形状となるので、出鋼開始時と出鋼の末期
においては、副原料の落下位置が出鋼流の落下位置に一
致しない。一方、本発明によれば、出鋼開始時と、出鋼
の末期にシュートの先端を、固定傾斜角の部分の延長線
より上方に向けて副原料を投入するので、副原料はより
遠くに落下するので、その落下位置の軌跡を出鋼流の落
下位置の軌跡と合致させることができる。なお、上向き
角度の上限を２０°と定めるのは、通常の転炉と副原料
投入装置の位置関係では、いかなる出鋼流位置に対して
も最大２０°もあれば、副原料の落下位置を出鋼流の落
下位置に合致させることが可能となるからである。The conventional auxiliary material input chute has an inclination angle of 45 to 60 degrees in the vertical direction, and the locus of the auxiliary material falling position on the horizontal plane due to the turning thereof is as shown by symbol A in FIG. , And becomes an arc shape centered on the chute turning center.
On the other hand, the trajectory of the falling position of the tapping flow has a linear shape as shown in FIG. 4C. Therefore, at the start of tapping and at the end of tapping, the falling position of the auxiliary material is determined by the tapping flow. Does not match the falling position of. On the other hand, according to the present invention, at the start of tapping, and at the end of tapping, the tip of the chute is charged with the auxiliary material directed upward from the extension of the portion of the fixed inclination angle, so that the auxiliary material is farther away. Since it falls, the locus of the falling position can be matched with the locus of the falling position of the tapping flow. In addition, the upper limit of the upward angle is set to 20 ° in the normal positional relationship between the converter and the auxiliary raw material charging device, if there is a maximum of 20 ° for any tapping flow position, the falling position of the auxiliary raw material is determined. This is because it is possible to match the falling position of the tapping flow.
【００１２】次に、本発明では、かかる旋回シュート５
にさらに工夫を凝らし、副原料１４の通過を促進させる
手段も備えるようにした。副原料はシュート上方に設け
られたホッパから切り出され、通常は垂直の落下部を経
由して、一定傾斜角の旋回部１１に入るので、先端部１
２に入る時点で相当の落下の運動エネルギーを持ってい
る。したがって、仮に先端部１２を最大の上向角度２０
°（旋回部に対する相対角度）としても、先端部は水平
に対して４０°程度で傾斜しているので、ここで副原料
が詰まることは滅多にはあり得ない。しかしながら、先
端部１２では、副原料の受ける転がり摩擦力は、旋回部
に比べて大きいので、特に比表面積の大きいショットア
ルミなどの場合は、落下速度が減殺され、それがため
に、副原料の落下位置が所望位置に届かないことがあり
得る。そこで、本発明では、この転がり摩擦力を低減す
る手段を設けることで、副原料の通過を促進させるよう
にもした。簡易には、公知の機械的な振動手段（例え
ば、バイブレータ）を旋回部に取付けることでも良い
が、図１に示すように、噴射ノズル１３を介しての気体
吹き込みが有効である。気体としては、副原料を酸化し
てしまわないように、アルゴン・ガス等の不活性ガスが
好ましい。なお、気体の噴射は、先端部の付け根からシ
ュートの落下方向に向ける方法、先端部の内面に多数の
孔を設けてそこから噴射する方法などが好ましく採用で
きる。また、接続的に噴射する方法、パルスジェットの
ように間欠的に噴射する方法のいずれでも良い。Next, in the present invention, the turning chute 5
Further, the invention is further devised to provide a means for promoting the passage of the auxiliary material 14. The auxiliary material is cut out from a hopper provided above the chute, and usually enters the turning section 11 having a constant inclination angle via a vertical drop section.
At the time of entering 2, it has considerable kinetic energy of falling. Therefore, if the tip 12 is assumed to have the maximum upward angle 20
Even in terms of ° (relative angle with respect to the swirling part), the tip is inclined at about 40 ° with respect to the horizontal, so that the clogging of the auxiliary material here is rarely possible. However, at the tip portion 12, the rolling frictional force received by the auxiliary material is larger than that of the turning portion. Therefore, particularly in the case of shot aluminum or the like having a large specific surface area, the falling speed is reduced. The falling position may not reach the desired position. Therefore, in the present invention, the provision of the means for reducing the rolling frictional force promotes the passage of the auxiliary material. For simplicity, a well-known mechanical vibration means (for example, a vibrator) may be attached to the revolving part, but gas blowing through the injection nozzle 13 is effective as shown in FIG. As the gas, an inert gas such as an argon gas is preferable so as not to oxidize the auxiliary material. In addition, as the method of injecting the gas, a method of directing the chute from the base of the tip in the dropping direction, a method of providing a large number of holes on the inner surface of the tip and injecting the gas therefrom, and the like can be preferably adopted. In addition, either a method of connecting injection or a method of intermittent injection such as pulse jet may be used.
【００１３】[0013]
【実施例】精錬容器として容量２００トンの転炉１を用
い、取鍋６に脱炭精錬済の溶鋼２を出鋼した。その際、
副原料１４として溶鋼２を脱酸する金属アルミニウム３
００ｋｇを、本発明に係る図１の旋回シュート５を用い
て逐次投入した。図２は、出鋼初期の状況を示してい
る。そこでは、転炉１の傾動角が小さいため、出鋼流４
の軌跡は、大きくふくらんでいる。そのため、この出鋼
流４に副原料１４を直接当てるため、旋回シュート５の
先端部１２の傾斜角を２０°にし、且つ噴射ノズル１３
から窒素ガスを５ｍ3 ／ｍｉｎで流した。一方、図３
は、出鋼終期の状況を示し、先端部１２は、旋回部１１
とほぼ同軸にあり、前記傾斜角は、ほぼ０°である。そ
の理由は、出鋼流４を取鍋６の中央で受けるために、転
炉１の傾動に合わせて、受鋼台車７を前後進させ、出鋼
流４と副原料１４の合流点８を転炉の出鋼孔３の直下に
したからである。つまり、この場合は、旋回シュート５
の先端部１２を上昇させる必要がなく、またアルゴン・
ガスの吹込みも停止している。EXAMPLE A converter 1 having a capacity of 200 tons was used as a refining vessel, and a decarburized and refined molten steel 2 was discharged from a ladle 6. that time,
Metal aluminum 3 for deoxidizing molten steel 2 as auxiliary material 14
00 kg was sequentially charged using the turning chute 5 of FIG. 1 according to the present invention. FIG. 2 shows the situation at the beginning of tapping. Here, since the tilt angle of the converter 1 is small, the tapping flow 4
Trajectory is large and bulging. Therefore, in order to apply the auxiliary material 14 directly to the tapping stream 4, the tip 12 of the revolving chute 5 has an inclination angle of 20 ° and the injection nozzle 13
, A nitrogen gas was flowed at 5 m 3 / min. On the other hand, FIG.
Shows the situation at the end of tapping, and the tip 12 is
And the inclination angle is substantially 0 °. The reason is that in order to receive the tapping stream 4 at the center of the ladle 6, the steel receiving trolley 7 is moved forward and backward in accordance with the tilt of the converter 1, and the confluence 8 of the tapping stream 4 and the auxiliary material 14 is determined. This is because it is located immediately below the tap hole 3 of the converter. That is, in this case, the turning chute 5
There is no need to raise the tip 12 of
Gas injection is also stopped.
【００１４】かかる操業の結果、前記副原料１４の投入
歩留は、従来の傾斜角固定式の旋回シュートを用いた場
合に比べ、大幅に向上した。ちなみに、平均５２％が達
成できたのである。なお、上記実施例は、溶融金属を溶
鋼として製鋼操業での使用を説明したが、本発明は、そ
れに限らず、非鉄金属精錬や化学工業の分野にも適用で
きる。As a result of this operation, the yield of the auxiliary raw material 14 has been greatly improved as compared with the conventional case using a fixed tilt angle type swivel chute. Incidentally, an average of 52% was achieved. Although the above embodiment has described the use of molten metal as molten steel in steelmaking operations, the present invention is not limited to this and can be applied to the fields of non-ferrous metal refining and the chemical industry.
【００１５】[0015]
【発明の効果】以上述べたように、本発明により、溶融
金属を精錬容器から取鍋へ出湯する際に、精錬用副原料
を確実に出湯流と接触させるばかりでなく、該シュート
での詰りや減速も防止できるようになった。その結果、
副原料の投入歩留りを、従来より大幅に向上させること
ができた。As described above, according to the present invention, when the molten metal is discharged from the refining vessel to the ladle, not only does the auxiliary material for refining surely come into contact with the tapping stream, but also the clogging by the chute. And deceleration can be prevented. as a result,
The input yield of auxiliary raw materials was able to be significantly improved compared to the conventional case.
【図１】本発明に係る旋回シュートの縦断面図である。FIG. 1 is a longitudinal sectional view of a turning chute according to the present invention.
【図２】転炉からの出鋼当初に、図１の旋回シュートを
使用している状況を示す側面図である。FIG. 2 is a side view showing a situation where the turning chute of FIG. 1 is used at the beginning of tapping from the converter.
【図３】転炉からの出鋼終期での、本発明に係る旋回シ
ュートの使用状況状態を示す側面図である。FIG. 3 is a side view showing the state of use of the turning chute according to the present invention at the end of tapping from the converter.
【図４】取鍋に保持した溶鋼面上での副原料の落下軌跡
を示す平面図である。FIG. 4 is a plan view showing a falling trajectory of an auxiliary material on a molten steel surface held by a ladle.
１ 転炉 ２ 溶鋼 ３ 出鋼孔 ４ 出鋼流（溶鋼流） ５ 旋回シュート ６ 取鍋 ７ 受鋼台車 ８ 合流点 ９ 旋回用モータ １０ シリンダ １１ 旋回部 １２ 先端部 １３ 噴射ノズル １４ 副原料 １５ フレーム １６ 連結部 １７ スラグ １８ ピン DESCRIPTION OF SYMBOLS 1 Converter 2 Molten steel 3 Tapping hole 4 Tapping flow (Molten steel flow) 5 Turning chute 6 Ladle 7 Receiving trolley 8 Confluence point 9 Turning motor 10 Cylinder 11 Turning section 12 Tip section 13 Injection nozzle 14 Secondary material 15 Frame 16 Connecting part 17 Slug 18 Pin
Claims (6)
の流に精錬用副原料を投入する旋回シュートであって、 前記旋回シュートを、上下方向の傾斜角が一定で、一端
を中心とし、他端を水平方向に旋回可能な旋回部と、該
旋回部の前記他端に連結され、その上下方向の傾斜角を
変更自在とした先端部とで形成させてなることを特徴と
する副原料投入用旋回シュート。1. A revolving chute for charging a refining auxiliary material into a flow of molten metal discharged from a refining vessel to a ladle, wherein the revolving chute has a constant vertical inclination angle and one end as a center. And a turning part having the other end turnable in a horizontal direction, and a tip part connected to the other end of the turning part and having a freely variable vertical inclination angle. Swivel chute for material input.
るシリンダを備えたことを特徴とする請求項１記載の副
原料投入用旋回シュート。2. The turning chute according to claim 1, further comprising a cylinder for changing a vertical inclination angle of said tip portion.
を追設したことを特徴とする請求項１又２記載の副原料
投入用旋回シュート。3. The turning chute according to claim 1, further comprising a means for accelerating the passage of the auxiliary material at the tip end.
部内の副原料通路に沿て気体を吹込む気体噴射ノズルで
あることを特徴とする請求項１〜３いずれかに記載の副
原料投入用旋回シュート。4. The auxiliary raw material according to claim 1, wherein said auxiliary raw material passage promoting means is a gas injection nozzle for blowing a gas along an auxiliary raw material passage in said distal end portion. Revolving chute for loading.
を特徴とする請求項１〜４いずれかに記載の副原料投入
用旋回シュート。5. The turning chute according to claim 1, wherein the gas is an inert gas.
徴とする請求項１〜５いずれかに記載の副原料投入用旋
回シュート。6. The turning chute according to claim 1, wherein said molten metal is formed of molten steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP152298A JPH11199019A (en) | 1998-01-07 | 1998-01-07 | Turning chute for putting in auxiliary material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP152298A JPH11199019A (en) | 1998-01-07 | 1998-01-07 | Turning chute for putting in auxiliary material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11199019A true JPH11199019A (en) | 1999-07-27 |
Family
ID=11503846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP152298A Pending JPH11199019A (en) | 1998-01-07 | 1998-01-07 | Turning chute for putting in auxiliary material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11199019A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001073138A3 (en) * | 2000-03-24 | 2002-03-14 | Qual Chem Ltd | Steelmaking |
| KR100733356B1 (en) * | 2001-05-18 | 2007-06-29 | 주식회사 포스코 | Kneader charging device of converter |
| JP2007181845A (en) * | 2006-01-05 | 2007-07-19 | Jfe Steel Kk | Apparatus for supplying mold powder for continuous casting |
| JP2007191346A (en) * | 2006-01-18 | 2007-08-02 | Nippon Steel Materials Co Ltd | Method for refining silicon |
| KR100829960B1 (en) * | 2001-12-07 | 2008-05-16 | 주식회사 포스코 | Apparatus for inserting Sub-material Utilized in Electric Furnace |
| KR200453677Y1 (en) | 2008-11-27 | 2011-05-23 | 현대제철 주식회사 | Input chute of assistant material for ladle furnace |
| JP2015143373A (en) * | 2014-01-31 | 2015-08-06 | Ｊｆｅスチール株式会社 | Auxiliary material input swing chute and auxiliary material input method |
| KR101696738B1 (en) * | 2015-08-31 | 2017-01-16 | 주식회사 포스코 | Sub-material injection device in refining furnace |
| WO2017188159A1 (en) * | 2016-04-25 | 2017-11-02 | 新日鐵住金株式会社 | Molten iron desulfurization method and desulfurization apparatus |
| CN109436653A (en) * | 2018-11-27 | 2019-03-08 | 亳州司尔特生态肥业有限公司 | A kind of easing gear |
| KR20190036276A (en) * | 2017-09-27 | 2019-04-04 | 주식회사 포스코 | Apparatus for inserting of raw material |
| CN110669898A (en) * | 2019-11-08 | 2020-01-10 | 莱芜钢铁集团有限公司 | Method for replacing 120-ton converter chute |
-
1998
- 1998-01-07 JP JP152298A patent/JPH11199019A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001073138A3 (en) * | 2000-03-24 | 2002-03-14 | Qual Chem Ltd | Steelmaking |
| KR100733356B1 (en) * | 2001-05-18 | 2007-06-29 | 주식회사 포스코 | Kneader charging device of converter |
| KR100829960B1 (en) * | 2001-12-07 | 2008-05-16 | 주식회사 포스코 | Apparatus for inserting Sub-material Utilized in Electric Furnace |
| JP2007181845A (en) * | 2006-01-05 | 2007-07-19 | Jfe Steel Kk | Apparatus for supplying mold powder for continuous casting |
| JP2007191346A (en) * | 2006-01-18 | 2007-08-02 | Nippon Steel Materials Co Ltd | Method for refining silicon |
| JP4671872B2 (en) * | 2006-01-18 | 2011-04-20 | 新日鉄マテリアルズ株式会社 | Silicon refining method |
| KR200453677Y1 (en) | 2008-11-27 | 2011-05-23 | 현대제철 주식회사 | Input chute of assistant material for ladle furnace |
| JP2015143373A (en) * | 2014-01-31 | 2015-08-06 | Ｊｆｅスチール株式会社 | Auxiliary material input swing chute and auxiliary material input method |
| KR101696738B1 (en) * | 2015-08-31 | 2017-01-16 | 주식회사 포스코 | Sub-material injection device in refining furnace |
| WO2017188159A1 (en) * | 2016-04-25 | 2017-11-02 | 新日鐵住金株式会社 | Molten iron desulfurization method and desulfurization apparatus |
| JPWO2017188159A1 (en) * | 2016-04-25 | 2018-09-27 | 新日鐵住金株式会社 | Method and apparatus for desulfurizing molten iron |
| CN109072320A (en) * | 2016-04-25 | 2018-12-21 | 新日铁住金株式会社 | The sulfur method and desulfurizer of molten iron |
| KR20190036276A (en) * | 2017-09-27 | 2019-04-04 | 주식회사 포스코 | Apparatus for inserting of raw material |
| CN109436653A (en) * | 2018-11-27 | 2019-03-08 | 亳州司尔特生态肥业有限公司 | A kind of easing gear |
| CN110669898A (en) * | 2019-11-08 | 2020-01-10 | 莱芜钢铁集团有限公司 | Method for replacing 120-ton converter chute |
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