JPH1054673A - Arc furnace with preheating device - Google Patents
Arc furnace with preheating deviceInfo
- Publication number
- JPH1054673A JPH1054673A JP8211734A JP21173496A JPH1054673A JP H1054673 A JPH1054673 A JP H1054673A JP 8211734 A JP8211734 A JP 8211734A JP 21173496 A JP21173496 A JP 21173496A JP H1054673 A JPH1054673 A JP H1054673A
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- arc furnace
- preheating device
- tower
- gate
- 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.)
- Granted
Links
Landscapes
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Furnace Details (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、予熱装置付きアー
ク炉に係わる。[0001] The present invention relates to an arc furnace with a preheating device.
【０００２】[0002]
【従来の技術】従来から、アーク炉の真上に塔体状の予
熱装置を備え、溶解原料を加熱してそれを溶解させると
共に、その時に生ずる排ガス熱を、次に溶解をすべき溶
解原料の予熱に利用し、省エネルギーを図り得るように
している。2. Description of the Related Art Conventionally, a tower-shaped preheating device has been provided directly above an arc furnace to heat a molten raw material and melt the raw material. It is used for pre-heating, so that energy can be saved.
【０００３】この種のアーク炉は、炉体内部にスクラッ
プを溶解するための空間を備える炉本体と、その炉本体
の上側を塞ぐ炉蓋とから構成され、炉蓋には上記溶解に
より生ずる排ガスを排出するための開口部が備えてあ
る。上記炉蓋にはスクラップの加熱用の電極が付設され
て、又スクラップの貯留空間を備える貯留槽が上記開口
部と連通する状態に付設してある。上記炉体は出湯のた
めに傾動自在に構成してあるものが知られている（特表
平３−５０５６２５号公報）。An arc furnace of this type includes a furnace body having a space for melting scrap inside a furnace body, and a furnace cover for closing the upper side of the furnace body. There is an opening for discharging the air. An electrode for heating the scrap is provided on the furnace lid, and a storage tank having a storage space for the scrap is provided so as to communicate with the opening. It is known that the above-mentioned furnace body is configured to be tiltable for tapping (Japanese Patent Application Laid-Open No. 3-505625).
【０００４】上記のようなアーク炉によれば、上記電極
からのアークによってスクラップを加熱して溶解させる
ことができる。しかもその時に生ずる高温の排ガスを上
記貯留空間に通してそこに貯留したスクラップを予熱で
きるので、排熱を利用して省エネルギーを図ることがで
きる。According to the above-described arc furnace, the scrap can be heated and melted by the arc from the electrode. In addition, since the high-temperature exhaust gas generated at that time can be passed through the storage space and the scrap stored therein can be preheated, energy can be saved by using the exhaust heat.
【０００５】しかし、このような装置では溶解するアー
ク炉の上方に塔体状の予熱装置を備えようとするとアー
ク炉の中央部に電極が備えられているために、塔体の平
面の面積が制約されて狭い面積しか採れない。そのため
に塔体を高くせざる得なかった。However, in such an apparatus, if an attempt is made to provide a tower-shaped preheating device above the melting arc furnace, an electrode is provided in the center of the arc furnace, so that the plane area of the tower body is reduced. It is limited and can only take a small area. The tower had to be raised for that.
【０００６】塔体が高くなるとその分の建家をさらに高
くしなければならなかったり、塔体内にスクラップを装
入するのに高い塔体の上方までスクラップをクレーンで
持ち上げねばならないという問題がある。そこで、塔体
の高さを下げようとして塔体面積を広げて、広げた面積
に合わせてアーク炉の炉体の径を広げると敷地面積が広
く成ったり、炉壁が電極から離れ過ぎるために炉壁付近
のスクラップにまでアーク熱が届かなかったりして、炉
壁付近のスクラップが最後まで溶け残ってしまい溶解時
間が掛かり過ぎるという問題がある。[0006] When the tower body is raised, there is a problem that the building must be further raised, and the scrap must be lifted by a crane above the high tower body in order to load the scrap into the tower body. . In order to reduce the height of the tower body, the area of the tower body is increased, and if the diameter of the furnace body of the arc furnace is increased in accordance with the expanded area, the site area becomes large, or the furnace wall becomes too far from the electrode. There is a problem in that the arc heat does not reach the scrap near the furnace wall, and the scrap near the furnace wall remains melted to the end and takes too much melting time.
【０００７】[0007]
【発明が解決しようとする課題】そこで、本発明は、予
熱装置付きアーク炉の塔体の高さを低くしても、炉径を
広げないでスクラップが沢山貯留できるようにすること
を目的とする。SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to make it possible to store a large amount of scrap without increasing the diameter of the furnace even if the height of the tower of the arc furnace with a preheating device is reduced. I do.
【０００８】[0008]
【課題を解決するための手段、発明の実施の形態及び発
明の効果】本発明は、アーク炉の上方に予熱装置を配置
し、前記予熱装置は、上方にスクラップの装入口を有
し、下方にアーク炉の炉蓋と接続させる開口を有し、前
記装入口と前記開口との間に内部空間を有する塔体を成
し、前記塔体の内部空間に通気孔を有する開閉可能なゲ
ートを設け、前記塔体の下部分に該塔体を移動するため
の台車を備え、前記アーク炉の上部に予熱装置を備えた
予熱装置付きアーク炉において、前記ゲートの一部分が
アーク炉の炉壁よりも外側にはみ出させて配置されてい
ることを特徴とする。Means for Solving the Problems, Embodiments of the Invention, and Effects of the Invention According to the present invention, a preheating device is disposed above an arc furnace, and the preheating device has a scrap inlet at an upper portion, and a lower portion at a lower portion. An opening to be connected to the furnace lid of the arc furnace, forming a tower having an internal space between the charging port and the opening, an openable and closable gate having a vent in the internal space of the tower. A trolley for moving the tower body in a lower portion of the tower body, and an arc furnace with a preheating device provided with a preheating device at an upper portion of the arc furnace, wherein a part of the gate is located above a furnace wall of the arc furnace. Are also arranged to protrude outside.
【０００９】本発明によると、アーク炉の炉壁からゲー
トの一部分を外方向にはみ出させて設けたので、塔体平
面の面積を広く採ることができるから高さを低くするこ
とができる。従って、その分だけ建家が低くて済むし、
スクラップも低い位置から装入できる。尚、炉壁から外
方向に塔体をはみ出させて設けたてあるので炉体をその
分だけ広げなくて済むから、炉壁付近までアーク熱が伝
わり易いしスクラップが溶け残らない。According to the present invention, since a part of the gate protrudes outward from the furnace wall of the arc furnace, the area of the tower body plane can be widened, so that the height can be reduced. Therefore, the building needs to be lower by that much,
Scrap can also be loaded from a low position. In addition, since the tower body is provided so as to protrude outward from the furnace wall, the furnace body does not need to be spread by that much, so that the arc heat is easily transmitted to the vicinity of the furnace wall and the scrap does not remain.
【００１０】又、前記台車は、前記塔体を炉心部方向に
位置させるように移動可能に設けると、炉体の大きさに
合わせて塔体の面積を大きく採れるからさらに塔体を低
くすることができるし、スクラップを炉の中心に装入で
きるから熱効率がよく溶解時間も早い。[0010] Further, when the bogie is provided so as to be movable so as to position the tower in the direction of the core, the tower can have a larger area in accordance with the size of the furnace, so that the tower is further lowered. In addition, since the scrap can be charged into the center of the furnace, the heat efficiency is high and the melting time is short.
【００１１】さらに、前記アーク炉は出湯口を通る中心
線に対して左右非対象にし、相対的に膨らんだ炉壁側に
電極をずらして配置し、その反対側の炉壁を前記中心線
に近づけて直線状の炉壁部を設けると、電極が配置して
ある反対側の炉壁に余分な膨らみがないから電極から離
れ過ぎることがなく電極からの熱がよく伝わりスクラッ
プを溶け残すことがない。又電極を中心から反対側の炉
壁に寄せてずらして設けてあるから、それだけ塔体の面
積を大きくとることができる。Further, the arc furnace is symmetrical with respect to the center line passing through the tap hole, and the electrodes are shifted to the side of the furnace wall which is relatively expanded, and the furnace wall on the opposite side is set to the center line. When a straight furnace wall is provided close to the furnace, the furnace wall on the opposite side where the electrodes are located does not have excessive bulges, so it will not be too far from the electrodes and heat from the electrodes will be transmitted well and the scrap will be melted away. Absent. Further, since the electrodes are provided shifted from the center toward the furnace wall on the opposite side, the area of the tower body can be increased accordingly.
【００１２】そして、前記塔体内の最下段ゲートは、該
ゲートを閉じた際に外側にはみださせた前記炉壁の天場
の真上に当たる部分の通気孔を塞ぐと、天場の真上の通
気孔が塞がれているから通気孔から天場上にスクラップ
が落ちてこない。従って、天場上にスクラップが堆積し
ないから台車をアーク炉の中央方向に移動しても炉蓋に
当たらない。When the lowermost gate in the tower body closes the vent hole just above the heaven on the furnace wall that protrudes outward when the gate is closed, the bottom of the heaven is closed. Since the upper air hole is closed, the scrap does not fall onto the ceiling from the air hole. Therefore, since the scrap does not accumulate on the ceiling, even if the truck is moved toward the center of the arc furnace, it does not hit the furnace lid.
【００１３】又、前記天場の上面に水冷パネル又は黒鉛
板を設けると、間違って落ちてきたスクラップは水冷パ
ネルで急冷されたり又は黒鉛板に弾かれてへばり着いた
りしないから上面に乗っているだけである。さらに、前
記水冷パネル又は黒鉛板の上面に堆積する堆積物をアー
ク炉内に落とすための落し手段を設けると、堆積するス
クラップ等を例えばプッシャーで押し込んだりしてアー
ク炉内に落とすことができる。If a water-cooled panel or a graphite plate is provided on the upper surface of the heaven, the scrap that has fallen by mistake will not be quenched by the water-cooled panel or will be repelled by the graphite plate and will not stick to the upper surface. I'm just there. Further, when a dropping means for dropping deposits deposited on the upper surface of the water-cooled panel or the graphite plate into the arc furnace is provided, scraps or the like to be deposited can be pushed into the arc furnace by, for example, a pusher.
【００１４】[0014]
【実施例】本発明の実施例を図に基づいて説明する。予
熱装置付きアーク炉は、図１，図２，図３に示すように
アーク炉２０の上方に炉蓋３０を介してその上方に予熱
装置１０を配置してある。アーク炉２０は、偏心アーク
炉（以下アーク炉という）２０を用いており僅かな傾動
角度で出湯でき形をしている。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. In the arc furnace with a preheating device, a preheating device 10 is disposed above an arc furnace 20 via a furnace lid 30 as shown in FIGS. The arc furnace 20 uses an eccentric arc furnace (hereinafter, referred to as an arc furnace) 20 and has a shape capable of tapping at a slight tilt angle.
【００１５】又、アーク炉２０は平面上で出湯口２４を
通る中心線に対して左右非対象の形をしており、紙面左
側に膨らんだ炉壁を有し、紙面右側に膨らみをカットし
た直線状の炉壁２３を中心線に近づけて設けてある。
尚、紙面左側の膨らみ側に電極×印をずらして配置し、
直線状の炉壁２３の上部に天場（この場合、側壁の天井
部の平いな面をう）２５を備えている。The arc furnace 20 has an asymmetric shape with respect to a center line passing through the tap hole 24 on a plane, has a furnace wall swelling on the left side of the drawing, and has a swelling cut on the right side of the drawing. A straight furnace wall 23 is provided close to the center line.
In addition, the electrode x mark is shifted and arranged on the bulge side on the left side of the paper,
A ceiling (in this case, a flat surface of the ceiling of the side wall) 25 is provided above the linear furnace wall 23.
【００１６】さらに、炉蓋３０は、炉体２１に当接させ
る下部の開口部３１を有すると共に上部に予熱装置１０
と当接させる開口部３２を設け、炉蓋３０の中心からず
らして電極差込孔３４を設けてある。この電極差込孔３
４に電極２２を抜き差し自在に設けてある。Further, the furnace lid 30 has a lower opening 31 to be brought into contact with the furnace body 21 and has a preheating device 10 in the upper part.
An opening 32 is provided for contact with the furnace cover 30, and an electrode insertion hole 34 is provided at a position shifted from the center of the furnace lid 30. This electrode insertion hole 3
4, the electrode 22 is provided so as to be freely inserted and removed.
【００１７】炉蓋３０の上方に上部開口部３２に合わせ
て予熱装置１０を備えてある。この際、予熱装置１０
は、下段のゲート１８を直線状の炉壁２３から外側に一
部分はみださせて設けてある。予熱装置１０は、上方に
扉１１ａを備えたスクラップの装入口１１を有し、下方
に炉蓋３０の上部開口３２と接続させるための開口１２
を有し、装入口１１と開口１２との間に内部空間１３を
有する塔体１４を設けてある。尚、塔体１４の内部空間
１３に通気孔を有した開閉可能な上段ゲート１７と下段
ゲート１８を設けてある。A preheating device 10 is provided above the furnace lid 30 so as to match the upper opening 32. At this time, the preheating device 10
The lower gate 18 is provided so as to partially protrude outward from the linear furnace wall 23. The preheating device 10 has a scrap charging port 11 provided with a door 11a at an upper part, and an opening 12 for connecting to an upper opening 32 of a furnace lid 30 at a lower part.
And a tower 14 having an internal space 13 between the charging inlet 11 and the opening 12. Note that an openable and closable upper gate 17 and a lower gate 18 having ventilation holes are provided in the internal space 13 of the tower 14.
【００１８】又、下段ゲート１８より下部の内部空間１
３ａから上段ゲート１７の上部の内部空間１３ｂに排ガ
スを送るためのバイパスダクト１５を備えると共に塔体
の中間部から外部に排ガスを排出させるための排出ダク
ト１６を備えてある。さらに、予熱装置１０は、予熱装
置１０や炉蓋３０を炉体２１の中心部まで横移動させる
ための台車１９を塔体１４の下部に備えてある。The internal space 1 below the lower gate 18
A bypass duct 15 for sending exhaust gas from 3a to an internal space 13b above the upper gate 17 is provided, and a discharge duct 16 for discharging exhaust gas from an intermediate portion of the tower body to the outside is provided. Further, the preheating device 10 is provided at the lower part of the tower body 14 with a carriage 19 for horizontally moving the preheating device 10 and the furnace lid 30 to the center of the furnace body 21.
【００１９】このような塔体１４を直線状の側壁２３か
ら一部はみ出させて配置させると直線状の側壁２３の天
場２５に予熱中の赤いスクラップが下段ゲート１８の通
気孔１８ａから落下して天場２５にへばり着いて固まっ
てしまうことがある。この状態で塔体１４内の加熱され
たスクラップをアーク炉２０の中心部に追加装入するた
めに台車１９を移動しようとして持ち上げた炉蓋３０の
端がスクラップに引っかかってしまい台車１９が移動で
きないことがある。そこで、塔体１４内の下段ゲート１
８を閉じた際に天場２５にスクラップが落ちてこないよ
うに天場２５の真上に当たる部分の下段ゲート１８の通
気孔１８ａを盲板１８ｃで塞いである。When such a tower body 14 is partially arranged so as to protrude from the straight side wall 23, a preheated red scrap falls from the ventilation hole 18 a of the lower gate 18 to the top 25 of the straight side wall 23. May come down to the heaven 25 and harden. In this state, the end of the furnace lid 30 that was lifted to move the truck 19 in order to additionally load the heated scrap in the tower body 14 into the center of the arc furnace 20 is caught by the scrap, and the truck 19 cannot move. Sometimes. Therefore, the lower gate 1 in the tower 14
The air hole 18a of the lower gate 18 at the portion directly above the heaven 25 is closed with a blind plate 18c so that the scrap does not fall into the heaven 25 when the 8 is closed.
【００２０】又、それでも天場２５の上に間違って載る
スクラップやスプラッシュを付着し難くするために、図
４に示すように水供給口２７と排水口２８が付設してあ
る水冷パネル２６を天場２５に覆いかぶせるように備え
て、水供給口２７から冷却水を供給して水冷パネル２６
を冷却してやる。さらに、水冷パネル２６の代わりに黒
鉛板２９を用いても黒鉛板２９にスクラップが付着し難
いからほぼ同様の効果が得られる。Still further, in order to make it difficult for scraps and splashes which are erroneously placed on the ceiling 25 to adhere, the water cooling panel 26 provided with a water supply port 27 and a drain port 28 as shown in FIG. The cooling water is supplied from the water supply port 27 so as to cover the
Let's cool down. Furthermore, even if a graphite plate 29 is used instead of the water-cooled panel 26, almost the same effect can be obtained because scraps are hardly adhered to the graphite plate 29.
【００２１】さらに、図１に示すように、水冷パネル２
７の上面にこぼれ落ちたスクラップをアーク炉２０内に
十分に押し込めるだけの距離Ｌのストロークを有するプ
ッシャー５０を水冷パネル２６又は黒鉛板２９の上方に
設けてある。このような予熱装置付アーク炉１の操業
は、先に電極２２を炉蓋３０の電極差込孔３４から引き
上げ側方に退避させてから、予熱装置１０と炉蓋３０を
アーク炉２０の上から横に移動し、アーク炉２０の内部
空間に他のバスケツトからスクラップを装入し、その後
予熱装置１０と炉蓋３０をアーク炉２０上の元の位置に
戻し、炉蓋３０をアーク炉２０に固定し、電極２２をア
ーク炉内に挿入してから、予熱装置１０の扉１１ａを開
けてバスケット６０からスクラップを上段ゲート１７の
上に装入し、上段ゲート１７を開けてスクラップを下段
ゲート１８の上に装入し、上段ゲート１７を閉じて次の
バスケット６０から上段ゲート１７の上にスクラップを
装入して扉１１ａを閉じる。尚、下段ゲート１８への装
入は、上段ゲート１７を開けておき下段ゲート１８に直
接に装入させてもよい。Further, as shown in FIG.
A pusher 50 having a stroke of a distance L enough to push the scrap spilled on the upper surface of the 7 into the arc furnace 20 is provided above the water cooling panel 26 or the graphite plate 29. In the operation of the arc furnace 1 with such a preheating device, the electrode 22 is first pulled up from the electrode insertion hole 34 of the furnace lid 30 and retracted to the side, and then the preheating device 10 and the furnace lid 30 are placed on the arc furnace 20. , The scrap is charged from another basket into the internal space of the arc furnace 20, and then the preheating device 10 and the furnace lid 30 are returned to the original positions on the arc furnace 20, and the furnace lid 30 is moved to the arc furnace 20. After the electrode 22 is inserted into the arc furnace, the door 11a of the preheating device 10 is opened, the scrap is loaded from the basket 60 onto the upper gate 17, the upper gate 17 is opened, and the scrap is removed from the lower gate. 18, the upper gate 17 is closed, scrap is loaded from the next basket 60 onto the upper gate 17, and the door 11 a is closed. The lower gate 18 may be directly charged into the lower gate 18 by opening the upper gate 17.
【００２２】次に電極２２に通電しアーク炉２０内のス
クラップをアーク熱或は酸素を負荷した燃焼熱によって
加熱し溶融する。この際に発生する排ガスはアーク炉２
０内を上昇して炉蓋３０を介して上方の予熱装置１０の
塔体１４内に入る。一部の排ガスは下段ゲート１８の通
気孔１８ａを通過して上昇し、下段ゲート１８の上のス
クラップを下方から加熱しながらスクラップの隙間を矢
印のように通り抜けて、その後排出ダクト１６から外部
に排出される。又、残りの排ガスは内部空間１３ａから
バイパス１５を通って塔体１４内の内部空間１３ｂに入
り上段ゲート１７の上のスクラップを上方から加熱しな
がらスクラップの隙間を矢印のように通り抜けて、その
後排出ダクト１６から外部に排出される。Next, the electrode 22 is energized and the scrap in the arc furnace 20 is heated and melted by arc heat or combustion heat loaded with oxygen. The exhaust gas generated at this time is supplied to the arc furnace 2
0 and enters the tower 14 of the preheating device 10 via the furnace lid 30. Some of the exhaust gas rises through the ventilation holes 18a of the lower gate 18, passes through the gap between the scraps as shown by the arrow while heating the scrap on the lower gate 18 from below, and then from the discharge duct 16 to the outside. Is discharged. Further, the remaining exhaust gas passes from the internal space 13a through the bypass 15 into the internal space 13b in the tower body 14 and passes through the gap of the scrap as shown by the arrow while heating the scrap above the upper gate 17 from above. It is discharged from the discharge duct 16 to the outside.
【００２３】このように、排ガスを下の方からと上の方
からとに分けて塔体１４内に送るからスクラップの上面
も下面も均一に予熱することができる。このようにして
スクラップが予熱されても下段ゲート１８に盲板１８ｃ
を設けてあるから天場２５上の水冷パネル２７上に赤い
スクラップが殆ど落ちてこないので水冷パネル２７上に
スクラップが堆積しない。As described above, the exhaust gas is sent into the tower 14 separately from the bottom and the top, so that both the upper surface and the lower surface of the scrap can be preheated uniformly. Even if the scrap is preheated in this way, the blind plate 18c
Is provided, the red scrap hardly falls on the water cooling panel 27 on the heaven 25, so that no scrap is accumulated on the water cooling panel 27.
【００２４】次に、追加装入するために電極２２を引き
上げ側方に退避させてから、炉蓋３０を持ち上げて塔体
１４の中心部とアーク炉２０の中心部が一致するように
台車１９を動かして塔体１４を移動する。この位置で下
段ゲート１８と上段ゲート１７を開き塔体１４内ですで
に加熱させてあるスクラップをアーク炉２０内に追加装
入する。このようにして追加装入が終了すると台車１９
を元の位置に戻し、炉蓋３０を元のように下げてアーク
炉に固定し、電極２２を再度アーク炉２０内に挿入して
送電を開始する。再び扉１１ａを開いて下段ゲート１８
と上段ゲート１７の上にスクラップを装入し扉１１ａを
閉じて終る。後はこの繰り返しである。Next, the electrode 22 is lifted and retracted to the side for additional charging, and then the furnace cover 30 is lifted up so that the bogie 19 is positioned so that the center of the tower 14 and the center of the arc furnace 20 coincide. To move the tower 14. At this position, the lower gate 18 and the upper gate 17 are opened, and the scrap already heated in the tower 14 is additionally charged into the arc furnace 20. When the additional charging is completed in this manner, the bogie 19
Is returned to the original position, the furnace lid 30 is lowered as before, fixed to the arc furnace, and the electrode 22 is inserted again into the arc furnace 20 to start power transmission. Open the door 11a again and lower gate 18
Then, the scrap is loaded on the upper gate 17, and the door 11a is closed to finish. The rest is the repetition.
【００２５】このようにして所定量の溶湯がアーク炉２
０内に溜るとアーク炉２０を傾動して出湯する。又、何
かの弾みで水冷パネル２６上にスクラップが載ってしま
った場合は、図１に示すように水冷パネル２６上に設け
てあるプッシャー５０でスクラップをアーク炉２０内に
押し込むことができる。尚、水冷パネル２６上のスクラ
ップは水冷パネル２６で急に冷やされてしまい水冷パネ
ル２６にへばり着いたりしないから容易にアーク炉２０
内に押し込むことができるし、プッシャー５０のストロ
ークＬを十分にとってあるから確実にスクラップをアー
ク炉２０内に押し込むことができる。In this manner, a predetermined amount of molten metal is supplied to the arc furnace 2.
When the temperature falls within 0, the arc furnace 20 is tilted to discharge hot water. Further, when the scrap is loaded on the water cooling panel 26 due to some impulse, the scrap can be pushed into the arc furnace 20 by a pusher 50 provided on the water cooling panel 26 as shown in FIG. The scrap on the water-cooled panel 26 is cooled rapidly by the water-cooled panel 26 and does not stick to the water-cooled panel 26, so that the arc furnace 20 can be easily cooled.
The scrap can be reliably pushed into the arc furnace 20 because the stroke L of the pusher 50 is sufficient.
【００２６】さらに、黒鉛板２９を用いた場合でも黒鉛
板２９にスクラップがへばり着き難いから水冷パネル２
６同様に容易にアーク炉２０内にプッシャー５０で押し
込むことができる。以上、本発明の実施例について説明
したが、本発明の趣旨の範囲を越えない限り種々の実施
ができる。例えば、水冷パネル２６や黒鉛板２９の代わ
りに耐火物の粉末を用いてもよいが、排ガスと共に塔体
１４内に吸い込まれる虞があるので実施例の方がよい。Further, even when the graphite plate 29 is used, since the scrap does not easily stick to the graphite plate 29, the water cooling panel 2
6 Similarly, it can be easily pushed into the arc furnace 20 by the pusher 50. Although the embodiments of the present invention have been described above, various embodiments can be made without departing from the scope of the present invention. For example, a refractory powder may be used instead of the water-cooled panel 26 or the graphite plate 29, but the embodiment is preferred because it may be sucked into the tower 14 together with the exhaust gas.
【００２７】又、前記プッシャー５０の代わりに、炉蓋
３０の内部にスクレーバの爪を配置し爪を支持軸を介し
て台車１９に取り付けておき、台車１９がアーク炉の中
央部に移動する際に爪でスクラップを掻き落とすように
してもよい。In place of the pusher 50, a scraper claw is arranged inside the furnace cover 30 and the claw is attached to the bogie 19 via a support shaft, so that when the bogie 19 moves to the center of the arc furnace. The scraps may be scraped off with a nail.
【図１】 実施例の予熱装置付きアーク炉の要部を表す
断面図。FIG. 1 is a cross-sectional view illustrating a main part of an arc furnace with a preheating device according to an embodiment.
【図２】 アーク炉を表す平面図。FIG. 2 is a plan view showing an arc furnace.
【図３】 左右非対称のアーク炉を表す平面図。FIG. 3 is a plan view showing a left-right asymmetric arc furnace.
【図４】 （ａ）は、水冷パネルを表す斜視図、（ｂ）
は（ａ）のＡ−Ａ断面図、（ｃ）は黒鉛板を表す斜視
図。FIG. 4A is a perspective view illustrating a water-cooled panel, and FIG.
1A is a cross-sectional view taken along line AA of FIG. 1A, and FIG. 1C is a perspective view showing a graphite plate.
１…予熱装置付きアーク炉、１０…塔体、１１…装入
口、１２…開口、１３…内部空間、１４…塔体、１５…
バイパスダクト、１６…排出ダクト、１７…上段ゲー
ト、１８…下段ゲート、盲板…１８ｃ、１９…台車、２
０…アーク炉、２１…炉体、２３…直線状の側壁、２４
…出湯口、２５…天場、２６…水冷パネル、２９…黒鉛
板、３０…炉蓋、５０…プッシャー、５５…スクレー
バ。DESCRIPTION OF SYMBOLS 1 ... Arc furnace with a preheating device, 10 ... Tower body, 11 ... Inlet, 12 ... Opening, 13 ... Inner space, 14 ... Tower body, 15 ...
Bypass duct, 16: exhaust duct, 17: upper gate, 18: lower gate, blind plate: 18c, 19: trolley, 2
0 ... arc furnace, 21 ... furnace body, 23 ... straight side wall, 24
... taphole, 25 ... heaven, 26 ... water-cooled panel, 29 ... graphite plate, 30 ... furnace lid, 50 ... pusher, 55 ... scraper.
フロントページの続き (72)発明者 丹羽 幸雄 愛知県江南市布袋町西布154 (72)発明者 中西 洋一 愛知県名古屋市南区扇田町60番地Continued on the front page (72) Inventor Yukio Niwa 154, Nishifu, Fubukuro-cho, Konan-shi, Aichi (72) Inventor Yoichi Nakanishi 60 Ogita-cho, Minami-ku, Nagoya-shi, Aichi
Claims (6)
方にアーク炉の炉蓋と接続させる開口を有し、前記装入
口と前記開口との間に内部空間を有する塔体を成し、 前記塔体の内部空間に通気孔を有する開閉可能なゲート
を設け、 前記塔体の下部分に該塔体を移動するための台車を備
え、 前記アーク炉の上部に予熱装置を備えた予熱装置付きア
ーク炉において、 前記ゲートの一部分がアーク炉の炉壁よりも外側にはみ
出させて配置されていることを特徴とする予熱装置付き
アーク炉。1. A preheating device is disposed above an arc furnace. The preheating device has a scrap charging port at an upper part, and has an opening at a lower part to be connected to a furnace lid of an arc furnace. Forming a tower having an internal space between the opening and the opening, providing an openable and closable gate having a vent in the internal space of the tower, and a cart for moving the tower to a lower portion of the tower In the arc furnace with a preheating device provided with a preheating device on the upper part of the arc furnace, with a preheating device characterized in that a part of the gate is disposed so as to protrude outside the furnace wall of the arc furnace Arc furnace.
に位置させるように移動可能に設けたことを特徴とする
請求項１記載の予熱装置付きアーク炉。2. The arc furnace with a preheating device according to claim 1, wherein the carriage is movably provided so as to position the tower body toward a center of the furnace.
して左右非対象にし、相対的に膨らんだ炉壁側に電極を
ずらして配置し、その反対側の炉壁を前記中心線に近づ
けて直線状の炉壁部を設けたことを特徴とする請求項１
又は２記載の予熱装置付きアーク炉。3. The arc furnace is symmetrical with respect to the center line passing through the tap hole, and the electrodes are displaced toward the relatively bulging furnace wall side, and the furnace wall on the opposite side is aligned with the center line. 2. A linear furnace wall portion is provided close to the furnace wall portion.
Or an arc furnace with a preheating device according to 2.
閉じた際に外側にはみださせた前記炉壁の天場の真上に
当たる部分の通気孔を塞いだことを特徴とする請求項１
又は３のいずれか記載の予熱装置付きアーク炉。4. The lowermost gate in the tower body is characterized in that it closes an air hole in a portion of the furnace wall, which is protruded outward when the gate is closed, and is located directly above a ceiling of the furnace wall. Claim 1
4. An arc furnace with a preheating device according to any one of the above items.
を設けたことを特徴とする請求項４記載の予熱装置付き
アーク炉。5. The arc furnace with a preheating device according to claim 4, wherein a water-cooled panel or a graphite plate is provided on an upper surface of the ceiling.
する堆積物をアーク炉内に落とすための落し手段を設け
たことを特徴とする請求項５記載の予熱装置付きアーク
炉。6. An arc furnace with a preheating device according to claim 5, further comprising a dropping means for dropping deposits deposited on the upper surface of the water-cooled panel or the graphite plate into the arc furnace.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21173496A JP3864460B2 (en) | 1996-08-09 | 1996-08-09 | Arc furnace with preheater |
| TW086102144A TW344789B (en) | 1996-03-07 | 1997-02-21 | Preheating device for melting materials and melting furnace having preheating device |
| MYPI97000726A MY125671A (en) | 1996-03-07 | 1997-02-26 | A preheating device of melting materials and a melting furnace with the preheating device attached thereto |
| KR1019970008041A KR100255885B1 (en) | 1996-03-07 | 1997-03-07 | Preheating device of molten material and melting furnace to which such preheating device is attached |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21173496A JP3864460B2 (en) | 1996-08-09 | 1996-08-09 | Arc furnace with preheater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1054673A true JPH1054673A (en) | 1998-02-24 |
| JP3864460B2 JP3864460B2 (en) | 2006-12-27 |
Family
ID=16610711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21173496A Expired - Lifetime JP3864460B2 (en) | 1996-03-07 | 1996-08-09 | Arc furnace with preheater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3864460B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002350062A (en) * | 2001-05-28 | 2002-12-04 | Daido Steel Co Ltd | Arc furnace equipped with preheating device |
-
1996
- 1996-08-09 JP JP21173496A patent/JP3864460B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002350062A (en) * | 2001-05-28 | 2002-12-04 | Daido Steel Co Ltd | Arc furnace equipped with preheating device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3864460B2 (en) | 2006-12-27 |
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