JP3129714B1 - Structure of bottom electrode of DC arc furnace - Google Patents
Structure of bottom electrode of DC arc furnaceInfo
- Publication number
- JP3129714B1 JP3129714B1 JP11288026A JP28802699A JP3129714B1 JP 3129714 B1 JP3129714 B1 JP 3129714B1 JP 11288026 A JP11288026 A JP 11288026A JP 28802699 A JP28802699 A JP 28802699A JP 3129714 B1 JP3129714 B1 JP 3129714B1
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- Prior art keywords
- edge
- arc furnace
- furnace
- electrode
- bottom electrode
- Prior art date
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- Discharge Heating (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Furnace Details (AREA)
Abstract
【要約】
【課題】 耐久性があり炉底交換回数を減少可能な直流
アーク炉の炉底電極の構造の提供。
【解決手段】 金属円棒の電極本体とされ、アーク炉の
炉底に設けられた少なくとも一つの孔に設置され、該電
極本体に一つの環縁が設けられた、上記電極本体、連接
シートとされ、環状の収納槽を具備し、該収納槽が内壁
部と外壁部を具備し、該収納槽の内壁部と外壁部の上端
が内向きと外向きに延伸されて内凸縁と外凸縁が形成さ
れ、該内凸縁が該環縁の下表面に結合され、該外凸縁が
該炉底に結合され、該収納槽が径方向において該環縁と
炉底の孔の内縁の間にほぼ位置する、上記連接シート、
以上を具備したことを特徴とする、直流アーク炉の炉底
電極の構造としている。To provide a hearth electrode structure of a DC arc furnace that is durable and can reduce the number of times of hearth replacement. SOLUTION: The electrode body, the connecting sheet, which is an electrode body of a metal rod, is installed in at least one hole provided in a furnace bottom of an arc furnace, and has one ring edge provided in the electrode body. The storage tank has an inner wall and an outer wall, and the upper ends of the inner wall and the outer wall of the storage tank extend inward and outward to form an inner convex edge and an outer convex. An edge is formed, the inner convex edge is coupled to a lower surface of the annular edge, the outer convex edge is coupled to the hearth, and the storage tank is radially formed between the annular edge and the inner edge of the hole in the hearth. The connection sheet, which is located substantially between,
The structure of a bottom electrode of a DC arc furnace characterized by having the above is provided.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は直流アーク炉の炉底
電極の構造に係り、特に、長い使用寿命を有する直流ア
ーク炉の炉底電極の構造に関する。The present invention relates to a structure of a bottom electrode of a DC arc furnace, and more particularly to a structure of a bottom electrode of a DC arc furnace having a long service life.
【０００２】[0002]
【従来の技術】アーク炉は金属冶練工業において熟知さ
れた金属冶練設備である。一般的には、直流アーク炉は
その炉体内部に炉頂電極と炉底電極が設置され、並びに
その間に適当な電力が加えられてアークを発生し、炉体
内部に放置された金属材料を溶融させる。周知の技術に
はフランスＣＬＥＣＩＭ社が１９９１年５月に提出した
直流アーク炉の設計があり、それはアメリカ合衆国パテ
ントＮｏ．５１９１５９２を取得しており、その技術内
容は以下のように分析、説明される。即ち、図１に示さ
れるように、それは炉体１０を具備し、該炉体１０の内
部には炉頂電極１２があり、それは炉体１０の上方に位
置し、炉体１０内部には炉底１６上に固定された複数の
炉底電極１４があり、炉頂電極１２と炉底電極１４が適
宜電源に連接されて電力が電極１２、１４に加えられこ
れによりアークが発生し、それにより金属冶練作業を進
行する。2. Description of the Related Art An arc furnace is a metal smelting facility well known in the metal smelting industry. Generally, a DC arc furnace is provided with a furnace top electrode and a furnace bottom electrode inside the furnace body, and an appropriate electric power is applied between them to generate an arc, and the metal material left inside the furnace body is removed. Let melt. A well-known technique is the design of a DC arc furnace filed by the French company CLECIM in May 1991, which is a US patent no. 5191592 has been obtained, and its technical content is analyzed and described as follows. That is, as shown in FIG. 1, it comprises a furnace body 10, inside the furnace body 10 is a furnace top electrode 12, which is located above the furnace body 10 and inside the furnace body 10 There are a plurality of furnace bottom electrodes 14 fixed on the bottom 16 and the furnace top electrode 12 and the furnace bottom electrode 14 are connected to a power source as appropriate, and power is applied to the electrodes 12, 14 thereby generating an arc, thereby producing an arc. Perform metal smelting work.
【０００３】図９には周知の炉底電極１４と炉体１０の
間の結合関係が示されている。炉底電極１４は炉底１６
に設けられた穿孔２０を貫通し、各一つの炉底電極１４
に凸縁構造２２が設けられ、ボルト２４により炉底電極
１４が炉底１６に固定され、炉底１６もピン２６で炉体
１０の底面開孔２８に結合され、こうして炉底電極１４
が炉体１０内部に穿入する。図１０から図１２に示され
るように、各一つの炉底電極１４はいずれも一つの長い
電極本体３０を具備し、その下半部に環縁３２が設けら
れ、該環縁３２の上方に一つの環状の連接シート３４が
固定され、並びにボルト３６で環縁３２と連接シート３
４が固定されて一体とされている。連接シート３４の内
径は電極本体３０の外径より大きく、その間に環状空間
３８が形成される。連接シート３４はボルト２４で炉底
１６に固定され、且つ連接シート３４の外径は炉底の穿
孔２０の外径より大きいために、完全に炉底の穿孔２０
を遮蔽する。炉体１０と炉底電極１４の間に電気絶縁隔
離状態を形成するために、連接シート３４と炉底１６の
間に絶縁環４２が設けられ、且つ連接シート３４と炉底
電極１４の環縁３２の間に絶縁環４４が設けられる。連
接シート３４の内径表面に絶縁嵌め輪４６が套設されて
いる。このほか、炉底１６の上に粉状の耐火材料４８が
敷設され（図１２と図１３参照）、炉体１０を保護す
る。FIG. 9 shows the connection between the well-known furnace bottom electrode 14 and the furnace body 10. The furnace bottom electrode 14 is
Through the perforations 20 provided in each of the furnace bottom electrodes 14.
The bottom electrode 14 is fixed to the bottom 16 by bolts 24, and the bottom 16 is also connected to the bottom opening 28 of the furnace body 10 with the pin 26, and thus the bottom electrode 14 is
Penetrates into the furnace body 10. As shown in FIGS. 10 to 12, each one of the furnace bottom electrodes 14 includes one long electrode main body 30, and a lower edge portion is provided with a ring edge 32. One annular connecting sheet 34 is fixed, and the ring 32 and the connecting sheet 3
4 are fixed and integrated. The inner diameter of the connecting sheet 34 is larger than the outer diameter of the electrode body 30, and an annular space 38 is formed therebetween. Since the connecting sheet 34 is fixed to the furnace bottom 16 with the bolts 24 and the outer diameter of the connecting sheet 34 is larger than the outer diameter of the hole 20 in the hearth, the hole 20 in the hearth is completely removed.
Shield. In order to form an electrically insulating state between the furnace body 10 and the bottom electrode 14, an insulating ring 42 is provided between the connecting sheet 34 and the furnace bottom 16, and an annular edge of the connecting sheet 34 and the bottom electrode 14. An insulating ring 44 is provided between 32. An insulating fitting ring 46 is provided on the inner surface of the connecting sheet 34. In addition, a powdery refractory material 48 is laid on the furnace bottom 16 (see FIGS. 12 and 13) to protect the furnace body 10.
【０００４】冶練作業時に、溶融金属液中の比較的重た
い雑物、例えば鉛は、炉底１６へと沈み、並びに粉状の
耐火材料４８に浸透し、炉底１６に接触する。これは図
１３に示されるとおりである。炉底１６には適宜、排鉛
孔４９が設けられており鉛液の排出に供される。鉛液排
出の過程で、適切な案内装置が欠乏しているために、炉
底電極１４に接触することがよくある。炉体１０内部の
溶融金属液と炉底電極１４は冶練作業中、電位的には異
なる位相であり、このため、鉛液が炉底電極１４に接触
する時に短絡現象が発生することがあり、相関部品の使
用寿命を短縮し、直流アーク炉の冶練作業コストを増加
し、例えば、ＣＥＬＣＩＭ社の設計したアーク炉の平均
使用寿命は１５００炉程度であり、このリミットに近づ
くと、実際の使用状況を検査して適切な時期に炉底電極
を交換しなければならなかかった。During the kneading operation, relatively heavy impurities such as lead in the molten metal liquid sink into the furnace bottom 16 and penetrate into the powdery refractory material 48 and come into contact with the furnace bottom 16. This is as shown in FIG. The furnace bottom 16 is appropriately provided with a lead discharge hole 49 for discharging lead liquid. In the process of draining the lead solution, it often contacts the bottom electrode 14 due to the lack of a suitable guiding device. The molten metal liquid inside the furnace body 10 and the furnace bottom electrode 14 have different phases in potential during the kneading operation, and therefore, when the lead solution comes into contact with the furnace bottom electrode 14, a short circuit phenomenon may occur. The service life of the correlated parts is shortened, and the cost of the DC arc furnace is increased. For example, the average service life of the arc furnace designed by CELCIM is about 1500 furnaces. It was necessary to check the usage and replace the bottom electrode at the appropriate time.
【０００５】[0005]
【発明が解決しようとする課題】本発明の目的は、一種
の直流アーク炉の炉底電極の構造を提供することにあ
り、それは、内部に鉛液案内装置を具えて有効に絶縁破
壊とそれによりもたらされる電極短絡の状況の発生を防
止してアーク炉作業のコストを低減できる構造であるも
のとする。SUMMARY OF THE INVENTION An object of the present invention is to provide a kind of structure of a bottom electrode of a direct current arc furnace, which is provided with a lead liquid guiding device inside to effectively prevent dielectric breakdown and the like. To prevent the occurrence of a situation of electrode short-circuit caused by the above, and reduce the cost of the arc furnace operation.
【０００６】[0006]
【課題を解決するための手段】請求項１の発明は、金属
円棒の電極本体とされ、アーク炉の炉底に設けられた少
なくとも一つの孔に設置され、該電極本体に一つの環縁
が設けられた、上記電極本体、連接シートとされ、環状
の収納槽を具備し、該収納槽が内壁部と外壁部を具備
し、該収納槽の内壁部と外壁部の上端が内向きと外向き
に延伸されて内凸縁と外凸縁が形成され、該内凸縁が該
環縁の下表面に結合され、該外凸縁が該炉底に結合さ
れ、該収納槽が径方向において該環縁と炉底の孔の内縁
の間にほぼ位置する、上記連接シート、以上を具備した
ことを特徴とする、直流アーク炉の炉底電極の構造とし
ている。請求項２の発明は、前記収納槽の外壁部の内側
面から炉底の孔の孔壁にかけて階段状の不連続表面が形
成されたことを特徴とする、請求項１に記載の直流アー
ク炉の炉底電極の構造としている。請求項２の発明は、
前記収納槽の外壁部と炉底の孔の内径の間に階段状の不
連続表面が形成されたことを特徴とする、請求項１に記
載の直流アーク炉の炉底電極の構造としている。請求項
３の発明は、前記直流アーク炉の炉底電極の構造がさら
に一つの環状の連接フランジを具備し、該連接フランジ
が連接シートの外凸縁と炉底の間に設置されたことを特
徴とする、請求項１に記載の直流アーク炉の炉底電極の
構造としている。請求項４の発明は、前記連接シートの
内凸縁と電極本体の環縁の下表面の間に一つの絶縁環が
設けられたことを特徴とする、請求項１に記載の直流ア
ーク炉の炉底電極の構造としている。請求項５の発明
は、前記直流アーク炉の炉底電極の構造において、さら
に一つの環状の固定フランジを具備し、該固定フランジ
が電極本体の環縁の上表面の上に設置されたことを特徴
とする、請求項１に記載の直流アーク炉の炉底電極の構
造としている。請求項６の発明は、前記収納槽が電極本
体内に洩れだす溶融鉛液を収容し、該収納槽の底部に収
納した溶融鉛液の排出用の少なくとも一つの排鉛孔が設
けられたことを特徴とする、請求項１に記載の直流アー
ク炉の炉底電極の構造としている。請求項７の発明は、
前記連接シートの外凸縁に孔が設けられてボルトを利用
しての炉底への結合に供されることを特徴とする、請求
項１に記載の直流アーク炉の炉底電極の構造としてい
る。請求項８の発明は、前記炉底が、アーク炉の炉体の
底端に設けられた開孔に結合されることで炉体に結合さ
れ、前記炉底と炉体の底端の開孔の間に一つの絶縁環が
設けられたことを特徴とする、請求項１に記載の直流ア
ーク炉の炉底電極の構造としている。請求項９の発明
は、前記連接フランジの内縁が収納槽の外壁部と炉底の
孔の孔壁の間に位置し、収納溝の外壁部の内側面から連
接フランジの内縁さらに炉底の孔の孔壁にかけて階段状
の不連続の表面が形成されたことを特徴とする、請求項
３に記載の直流アーク炉の炉底電極の構造としている。
請求項１０の発明は、前記連接フランジの外縁が径方向
に外向きに延伸されて連接シートの外凸縁の外径を超過
し、連接フランジの外縁から連接シートの外凸縁の外径
にかけて階段状の不連続の表面が形成されたことを特徴
とする、請求項３に記載の直流アーク炉の炉底電極の構
造としている。請求項１１の発明は、前記連接フランジ
と連接シートの外凸縁の間に一つの絶縁環が設けられた
ことを特徴とする、請求項３に記載の直流アーク炉の炉
底電極の構造としている。請求項１２の発明は、前記連
接フランジと炉底の間に一つの絶縁環が設けられたこと
を特徴とする、請求項３に記載の直流アーク炉の炉底電
極の構造としている。請求項１３の発明は、前記連接フ
ランジに孔が設けられてボルトを利用しての炉底への結
合に供されることを特徴とする、請求項３に記載の直流
アーク炉の炉底電極の構造としている。請求項１４の発
明は、前記固定フランジと電極本体の環縁の間に絶縁環
が設置されたことを特徴とする、請求項５に記載の直流
アーク炉の炉底電極の構造としている。請求項１５の発
明は、前記固定フランジの内側縁に一つの絶縁嵌め輪が
套設されたことを特徴とする、請求項５に記載の直流ア
ーク炉の炉底電極の構造としている。請求項１６の発明
は、前記固定フランジの外側縁が径方向に外向きに突出
して収納槽の内壁部の外壁部と対向する面を超過し、固
定フランジの外側縁から収納溝の内壁部の外壁部と対向
する面にかけて階段状の不連続の表面が形成されたこと
を特徴とする、請求項５に記載の直流アーク炉の炉底電
極の構造としている。請求項１７の発明は、前記固定フ
ランジの、環縁、及び連接シートの内凸縁に整合する孔
が設けられ、ボルトによるこれら三者の結合に供される
ことを特徴とする、請求項５に記載の直流アーク炉の炉
底電極の構造としている。請求項１８の発明は、前記連
接フランジの外縁部分に一つの斜面が形成され、該斜面
が炉底に形成された排鉛孔の位置にほぼ整合するよう設
けられ、該斜面が該排鉛孔より排出された鉛液を案内す
ることを特徴とする、請求項１０に記載の直流アーク炉
の炉底電極の構造としている。請求項１９の発明は、前
記電極本体の環縁の外縁表面に絶縁嵌め輪が套設された
ことを特徴とする、請求項１５に記載の直流アーク炉の
炉底電極の構造としている。According to a first aspect of the present invention, there is provided an electrode body made of a metal rod, which is installed in at least one hole provided in a bottom of an arc furnace, and which has one rim in the electrode body. Provided, the electrode body, a connection sheet, an annular storage tank, the storage tank has an inner wall and an outer wall, and the upper ends of the inner wall and the outer wall of the storage tank are inward. Extending outward to form an inner convex edge and an outer convex edge, the inner convex edge is coupled to the lower surface of the ring edge, the outer convex edge is coupled to the furnace bottom, and the storage tank is Wherein the connecting sheet, which is substantially located between the ring edge and the inner edge of the hole in the furnace bottom, is provided with a hearth electrode structure of a DC arc furnace. The invention according to claim 2 is the inside of the outer wall portion of the storage tank.
A step-shaped discontinuous surface is formed from the surface to the hole wall of the furnace bottom hole.
2. The direct-current arc according to claim 1, wherein
The furnace bottom electrode of the furnace is used. The invention of claim 2 is
2. The structure of a bottom electrode of a DC arc furnace according to claim 1, wherein a step-like discontinuous surface is formed between an outer wall portion of the storage tank and an inner diameter of a hole in the furnace bottom. The invention according to claim 3 is that the structure of the bottom electrode of the DC arc furnace further comprises one annular connecting flange, and the connecting flange is provided between the outer convex edge of the connecting sheet and the furnace bottom. A DC arc furnace according to claim 1, wherein the furnace bottom electrode has a structure. The invention according to claim 4 is characterized in that one insulating ring is provided between the inner convex edge of the connecting sheet and the lower surface of the ring edge of the electrode main body. It has a furnace bottom electrode structure. The invention according to claim 5 is characterized in that, in the structure of the bottom electrode of the DC arc furnace, one further annular fixing flange is provided, and the fixing flange is installed on the upper surface of the annular edge of the electrode body. A DC arc furnace according to claim 1, wherein the furnace bottom electrode has a structure. In the invention according to claim 6, the storage tank stores the molten lead liquid leaking into the electrode body, and at least one lead discharging hole for discharging the molten lead liquid stored in the bottom of the storage tank is provided. The structure of the bottom electrode of the direct current arc furnace according to claim 1, characterized in that: The invention of claim 7 is
The structure of the bottom electrode of the direct current arc furnace according to claim 1, wherein a hole is provided in an outer convex edge of the connecting sheet and is used for coupling to a furnace bottom using a bolt. I have. The invention according to claim 8 is characterized in that the furnace bottom is connected to a furnace body by being connected to an opening provided at a bottom end of a furnace body of an arc furnace, and the furnace bottom is connected to an opening at a bottom end of the furnace body. 2. The structure of the bottom electrode of the DC arc furnace according to claim 1, wherein one insulating ring is provided between the furnace rings. The invention according to claim 9 is that the inner edge of the connecting flange is formed between the outer wall of the storage tank and the furnace bottom.
It is located between the hole walls of the hole and extends from the inner surface of the outer wall
Stepped over the inner edge of the contact flange and the hole wall of the furnace bottom hole
Wherein a discontinuous surface is formed.
3. The structure of the bottom electrode of the DC arc furnace described in 3.
According to a tenth aspect of the present invention, an outer edge of the connecting flange is formed in a radial direction.
Stretched outward to exceed the outer diameter of the outer convex edge of the connecting sheet
From the outer edge of the connecting flange to the outer diameter of the outer convex edge of the connecting sheet.
Characterized by the formation of a step-like discontinuous surface over
The structure of the bottom electrode of the DC arc furnace according to claim 3,
It is made. The invention according to claim 11 is characterized in that one insulating ring is provided between the connecting flange and the outer protruding edge of the connecting sheet, wherein the structure of the bottom electrode of the DC arc furnace according to claim 3 is provided. I have. According to a twelfth aspect of the present invention, there is provided the structure of the bottom electrode of the DC arc furnace according to the third aspect, wherein one insulating ring is provided between the connecting flange and the furnace bottom. The invention according to claim 13 is characterized in that the connecting flange is provided with a hole and is used for connection to the furnace bottom using bolts, wherein the bottom electrode of the DC arc furnace according to claim 3 is provided. It has a structure. According to a fourteenth aspect of the present invention, there is provided the structure of the bottom electrode of the DC arc furnace according to the fifth aspect, wherein an insulating ring is provided between the fixed flange and a ring edge of the electrode body. According to a fifteenth aspect of the present invention, there is provided the structure of the bottom electrode of the DC arc furnace according to the fifth aspect, wherein one insulating fitting ring is provided on an inner edge of the fixed flange. According to a sixteenth aspect of the present invention, the outer edge of the fixing flange projects radially outward.
Over the surface of the inner wall of the storage tank facing the outer wall,
Facing the outer wall of the inner wall of the storage groove from the outer edge of the fixed flange
That a step-like discontinuous surface is formed over the surface
The bottom electrode of the DC arc furnace according to claim 5, characterized in that:
It has a pole structure. The invention according to claim 17 is characterized in that holes are provided which are aligned with the ring edge of the fixing flange and the inwardly projecting edge of the connecting sheet, and are used for coupling these three members by bolts. The structure of the bottom electrode of the DC arc furnace described in (1). The invention of claim 18 is that one slope is formed at an outer edge portion of the connecting flange, and the slope is provided so as to substantially match a position of a lead hole formed in a furnace bottom, and the slope is provided with the lead hole. 11. The structure of the bottom electrode of the DC arc furnace according to claim 10, wherein the discharged lead liquid is guided. According to a nineteenth aspect of the present invention, there is provided the structure of the bottom electrode of the direct current arc furnace according to the fifteenth aspect, wherein an insulating fitting ring is provided on an outer peripheral surface of a ring edge of the electrode body.
【０００７】[0007]
【発明の実施の形態】本発明の直流アーク炉の炉底電極
の構造は、金属円棒電極本体を具え、該金属円棒電極本
体は、アーク炉の炉底上に設けられた少なくとも一つの
孔内に挿入される。該電極の下半部に一つの環縁が設け
られ、その上に連接シートが取り付けられている。該連
接シートは、円形の収納槽と該収納槽の二側辺より内向
き及び外向きに突出する内凸縁と外凸縁を具備し、該連
接は該内凸縁を以てボルトを利用して環縁の下方の表面
に結合される。該外凸縁と炉底の間に連接フランジが設
けられ、並びにボルトで該連接シートと連接フランジが
該炉底の上に固定される。該連接シートの収納槽は径方
向に該環縁と該炉底の孔の内縁の間に位置し、その間の
距離を増長する。連接フランジと電極環縁の下表面に絶
縁環が設けられて絶縁隔離を行う。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the bottom electrode of a DC arc furnace according to the present invention comprises a metal rod electrode body, and the metal rod electrode body has at least one metal rod electrode body provided on the bottom of the arc furnace. Inserted into the hole. An annular edge is provided in the lower half of the electrode, on which the connecting sheet is attached. The connection sheet includes a circular storage tank and an inner convex edge and an outer convex edge that project inward and outward from two sides of the storage tank, and the connection uses a bolt with the inner convex edge. Bonded to the lower surface of the annulus. A connecting flange is provided between the outer convex edge and the furnace bottom, and the connecting sheet and the connecting flange are fixed on the furnace bottom with bolts. The connecting sheet storage tank is radially located between the ring edge and the inner edge of the hole in the furnace bottom to increase the distance therebetween. An insulating ring is provided on the lower surface of the connecting flange and the electrode ring to perform insulation isolation.
【０００８】[0008]
【実施例】図２は本発明の直流アーク炉の炉底電極装置
１１４とアーク炉の炉体１０の関係を示す分解斜視図で
ある。該図に示されるように、炉底電極装置１１４は、
アーク炉の炉底１６の穿孔２０を貫通し、各一つの炉底
電極装置１１４に凸縁構造１２２が設けられ、該凸縁構
造１２２を貫通するボルト２４により炉底電極装置１１
４が炉底１６に固定されている。炉底１６はピン２６で
炉体１０の底面の開孔２８に固定され、こうして炉底電
極装置１１４が炉体１０内部に穿入させられている。FIG. 2 is an exploded perspective view showing the relationship between the bottom electrode device 114 of the DC arc furnace and the furnace body 10 of the arc furnace according to the present invention. As shown in FIG.
A protruding edge structure 122 is provided in each one of the bottom electrode devices 114 through the perforations 20 of the bottom 16 of the arc furnace.
4 is fixed to the furnace bottom 16. The furnace bottom 16 is fixed to an opening 28 on the bottom surface of the furnace body 10 with a pin 26, and thus the furnace bottom electrode device 114 is penetrated into the furnace body 10.
【０００９】図３から図５に示されるように、各一つの
炉底電極装置１１４は、長い電極本体１３０を具備し、
その下半部に環縁１３２があり、内部に冷却液循環通路
が設けられて、該炉底電極装置１１４の冷却に供され
る。この冷却手段に関しては、周知の技術に属し且つ本
発明の重点ではないため説明を省略する。また環縁１３
２に複数の貫通孔２００が設けられている。環縁１３２
の下方に環状の連接シート１３４が設けられ、この実施
例によると、該連接シート１３４は、二つの同じ半円形
部材２０２、２０４で組成されているが、単一部材で組
成することも可能である。連接シート１３４は鉛液を収
容するための一つの円形の収納槽２０６を具備し、この
収納槽２０６は径方向において外側に位置する外壁部
（符号なし）と径方向の内側に位置する内壁部（符号な
し）で組成されている。収納槽２０６の外壁部と内壁部
よりそれぞれ外向き及び内向きに外凸縁２０８と内凸縁
２１０が延伸されている。内凸縁２１０は炉底電極装置
１１４の環縁１３２の下に当接し、且つ環縁１３２に設
けられた孔２００に対応する複数の貫通孔２１２を具
え、ボルト１４０により該連接シート１３４が環縁１３
２の下表面に連接される。連接シート１３４の内凸縁２
１０の寸法は収納槽２０６の内側辺縁をほぼ環縁１３２
の外縁に整合させるよう形成され、その目的は、順調に
鉛液５０を収納槽２０６内に導入させることにある。こ
れは図６に示されるとおりである。収納槽２０６の底面
には排鉛孔２４０が設けられ、鉛液の排出に供される。As shown in FIGS. 3 to 5, each one of the bottom electrodes 114 has a long electrode body 130,
An annular rim 132 is provided in the lower half thereof, and a cooling liquid circulation passage is provided therein to cool the furnace bottom electrode device 114. The description of the cooling means is omitted because it belongs to a known technique and is not the focus of the present invention. In addition, rim 13
2, a plurality of through holes 200 are provided. Rim 132
Is provided below the annular connecting sheet 134. According to this embodiment, the connecting sheet 134 is composed of two identical semi-circular members 202, 204, but can also be composed of a single member. is there. The connection sheet 134 has one circular storage tank 206 for storing lead liquid, and the storage tank 206 has an outer wall portion (not denoted by reference numeral) located outside in the radial direction and an inner wall portion located inside in the radial direction. (No sign). The outer convex edge 208 and the inner convex edge 210 extend outward and inward from the outer wall portion and the inner wall portion of the storage tank 206, respectively. The inner convex edge 210 abuts below the annular edge 132 of the furnace bottom electrode device 114 and has a plurality of through holes 212 corresponding to the holes 200 provided in the annular edge 132. Rim 13
2 connected to the lower surface. Inner convex edge 2 of connecting sheet 134
The size of 10 is such that the inner edge of the storage tank 206 is substantially
The purpose is to introduce the lead liquid 50 into the storage tank 206 smoothly. This is as shown in FIG. A lead discharge hole 240 is provided on the bottom surface of the storage tank 206, and is used for discharging lead liquid.
【００１０】環縁１３２の上表面に、環状の固定フラン
ジ２１４が取り付けられ、該固定フランジ２１４にネジ
孔２１６が設けられて、ボルト１４０が貫通して固定フ
ランジ２１４と環縁１３２が結合される。環縁１３２と
固定フランジ２１４と連接シート１３４の内凸縁２１０
の間に絶縁環２１５と２１７が設けられ、環縁１３２の
外縁表面にも一つの絶縁嵌め輪１４６が套設されてほぼ
収納槽２０６の内壁部と整合する。絶縁環２１５、２１
７は緊密に環縁１３２の外縁に当接し、絶縁環２１５が
その間に挟み置かれて、緊密に環縁１３２を被覆する。
固定フランジ２１４の内縁表面にも絶縁嵌め輪２１８が
套設され、こうして固定フランジ２１４と炉底電極装置
１１４の環縁１３２が十分に絶縁隔離される。本発明に
より、固定フランジ２１４の外縁部分３０１は径方向に
突伸して環縁１３２の外縁表面よりある距離突出してお
り、即ち収納槽２０６の内壁部を超過して収納槽２０６
の内側に進入し、環縁１３２の外縁表面との間に一つの
不連続の階段状の表面を形成している。溶融鉛液が固定
フランジ２１４を通過して収納槽２０６内に流入する
時、鉛液はこの突出する外縁部分３０１の形成する不連
続表面により液滴状に収納槽２０６内に滴入し、連続す
る鉛液流の形成が防止される。連続する鉛液流は炉体内
部の鉛液を含む溶融金属液と炉底電極装置１１４及びそ
の連接シート１３４の間の短絡の現象をもたらし、液滴
状の鉛液が収納槽２０６内に滴入して炉体内部の溶融金
属液と分離されることにより、短絡の状況がなくなる。
望ましくは、固定フランジ２１４の外縁部分３０１に鉛
液の流動を案内する斜面３０３が設けられる。An annular fixing flange 214 is mounted on the upper surface of the ring 132, and a screw hole 216 is provided in the fixing flange 214 so that the bolt 140 passes through and the fixing flange 214 and the ring 132 are joined. . The annular rim 132, the fixed flange 214, and the inner convex edge 210 of the connecting sheet 134
Insulating rings 215 and 217 are provided therebetween, and one insulating fitting ring 146 is also provided on the outer edge surface of the ring edge 132 so as to substantially match the inner wall of the storage tank 206. Insulating rings 215, 21
7 closely abuts the outer edge of the rim 132 and the insulating ring 215 is sandwiched therebetween to cover the rim 132 tightly.
An insulating fitting ring 218 is also provided on the inner edge surface of the fixing flange 214, and thus the fixing flange 214 and the ring edge 132 of the hearth electrode device 114 are sufficiently insulated and isolated. According to the present invention, the outer edge portion 301 of the fixing flange 214 extends radially and protrudes a certain distance from the outer edge surface of the annular rim 132, that is, exceeds the inner wall of the storage tank 206.
And forms one discontinuous stepped surface with the outer edge surface of the annular edge 132. When the molten lead liquid passes through the fixing flange 214 and flows into the storage tank 206, the lead liquid drops into the storage tank 206 in a droplet form by the discontinuous surface formed by the protruding outer edge portion 301, The formation of a flowing lead liquid stream is prevented. The continuous lead liquid flow causes a phenomenon of a short circuit between the molten metal liquid containing the lead liquid inside the furnace body and the furnace bottom electrode device 114 and the connection sheet 134, and the lead liquid in the form of droplets drops in the storage tank 206. As a result, the molten metal liquid inside the furnace body is separated from the molten metal liquid, thereby eliminating the situation of short circuit.
Preferably, an inclined surface 303 for guiding the flow of the lead liquid is provided on the outer edge portion 301 of the fixing flange 214.
【００１１】連接シート１３４の外凸縁２０８と炉底１
６の間に環状の連接フランジ２２０が挟み置かれる。こ
の実施例では、連接フランジ２２０と連接シート１３４
の両者が共同で炉底電極装置１１４の凸縁構造１２２を
構成している。連接シート１３４の外凸縁２０８、連接
フランジ２２０及び炉底１６にそれぞれ整合する孔２２
２２、２２４、２２６が設けられてボルト２２８の貫通
に供されて連接シート１３４と連接フランジ２２０が炉
底１６に固定され、これにより炉底電極装置１１４がア
ーク炉の炉体１０に結合される。孔２２４と孔２２６内
には雌ネジが設けられてボルト２２８との結合に供され
る。連接フランジ２２０と炉底１６及び連接シート１３
４の外凸縁２０８の間にはいずれも絶縁環２３０、２３
２が設けられて三者の絶縁隔離がなされている。The outer convex edge 208 of the connecting sheet 134 and the hearth 1
6, an annular connecting flange 220 is sandwiched therebetween. In this embodiment, the connecting flange 220 and the connecting sheet 134 are used.
Together form the protruding edge structure 122 of the hearth electrode device 114. Holes 22 matching the outer convex edge 208 of the connecting sheet 134, the connecting flange 220 and the hearth 16, respectively
22, 224, 226 are provided and used for the penetration of bolts 228 to fix the connecting sheet 134 and the connecting flange 220 to the furnace bottom 16, thereby connecting the furnace bottom electrode device 114 to the furnace body 10 of the arc furnace. . A female screw is provided in the holes 224 and 226 and is used for coupling with the bolt 228. Connecting flange 220, furnace bottom 16 and connecting sheet 13
Insulation rings 230, 23
2 are provided to insulate the three parties.
【００１２】この実施例によると、連接フランジ２２０
の内縁面と外縁面がそれぞれ内向き及び外向きに延伸さ
れて固定フランジ２１４の外凸縁２０８の内縁面（即ち
収納槽２０６の外壁部）と外縁面より突出しており、両
者の間に階段状の不連続表面が形成され、その目的と機
能は前述したとおりであり、鉛液を液滴状として収納槽
２０６内に滴下させ、連続した鉛液流を形成させずに短
絡現象の発生を防止する。このほか連接フランジ２２０
の上表面のその外縁面に隣接する部分に一つの斜面３０
５が形成され、それは炉底１６に排設された排鉛孔４９
に整合する位置とされて排出された鉛液を連接フランジ
２２０の外縁面に沿って案内して滴下させる。According to this embodiment, the connecting flange 220
Are extended inward and outward, respectively, and project from the inner edge surface of the outer convex edge 208 of the fixed flange 214 (that is, the outer wall portion of the storage tank 206) and the outer edge surface. A discontinuous surface is formed, the purpose and function of which are as described above. The lead liquid is dropped into the storage tank 206 in the form of droplets, and a short-circuit phenomenon occurs without forming a continuous lead liquid flow. To prevent. In addition, connecting flange 220
One slope 30 at the portion of the upper surface adjacent to its outer edge
5 is formed, which is a lead hole 49 provided in the furnace bottom 16.
The lead liquid discharged at the position matching the position is guided along the outer edge surface of the connecting flange 220 and is dropped.
【００１３】また、炉底１６の穿孔２０の内径は連接フ
ランジ２２０の内縁面の内径より小さく、これにより炉
底１６と連接フランジ２２０の内縁面の間にも階段状の
不連続の表面が形成され、その機能も、鉛液が連続した
鉛液流を形成するのを防止し、それにより短絡現象の発
生を防止することにある。Further, the inner diameter of the perforation 20 in the furnace bottom 16 is smaller than the inner diameter of the inner edge surface of the connecting flange 220, whereby a step-like discontinuous surface is formed between the furnace bottom 16 and the inner edge surface of the connecting flange 220. The function is also to prevent the lead liquid from forming a continuous lead liquid flow, thereby preventing the occurrence of a short circuit phenomenon.
【００１４】このほか、図７と図８に示される本発明の
第２実施例に示されるように、実際の使用において、連
接フランジ２２０と炉底１６の間に絶縁環２３０を必ず
しも設置する必要はない。In addition, as shown in a second embodiment of the present invention shown in FIGS. 7 and 8, in actual use, it is necessary to install an insulating ring 230 between the connecting flange 220 and the furnace bottom 16. There is no.
【００１５】直流アーク炉の炉底１６上には一層の粉状
の耐火材料４８が敷設され（図５と図６参照）、炉底電
極装置１１４及び炉体１０を保護するのに用いられる。A layer of powdered refractory material 48 is laid on the furnace bottom 16 of the DC arc furnace (see FIGS. 5 and 6) and is used to protect the furnace bottom electrode device 114 and the furnace body 10.
【００１６】このほか、本発明によると、特に、収納槽
２０６の設置、凸縁構造１２２（或いは炉底の穿孔２０
の内縁）及び電極本体１３０間の径方向の距離が有効に
増長され、周知の構造と比較すると、より有効に短絡の
可能性を減少でき、これにより短絡により発生する穿孔
からの漏洩の状況も減少できる。In addition, according to the present invention, in particular, the installation of the storage tank 206, the projection structure 122 (or the hole 20
The radial distance between the inner edge of the electrode and the electrode body 130 is effectively increased, and the possibility of short-circuiting can be more effectively reduced as compared with the known structure. Can be reduced.
【００１７】このほか、本発明によると、炉底１６と炉
体１０の底面の開孔２８の間に一つの絶縁環３０７が増
設され（図２参照）、その作用は炉底１６と炉体１０の
間の絶縁隔離作用を提供して、炉底電極装置１１４に対
してさらなる保護措置を形成することにある。In addition, according to the present invention, one insulating ring 307 is additionally provided between the furnace bottom 16 and the opening 28 on the bottom surface of the furnace body 10 (see FIG. 2). 10 to provide further protection for the bottom electrode arrangement 114 by providing an insulation isolation action.
【００１８】本発明の実施により、直流アーク炉の炉底
電極の使用寿命は約５千回以上に増加可能で、これによ
り炉底交換の回数が減り、炉底交換作業時間及び材料の
消耗を節約でき、その経済性は周知の直流アーク炉より
高い。According to the practice of the present invention, the service life of the bottom electrode of the DC arc furnace can be increased to about 5,000 times or more, thereby reducing the number of times of replacement of the bottom, reducing the work time and the consumption of materials for the bottom replacement. Savings and economics are higher than known DC arc furnaces.
【００１９】[0019]
【発明の効果】総合すると、本発明の直流アーク炉の炉
底電極の構造は、周知のものより耐久性があり、経済性
及び使用上の必要に符合し、このため本発明は新規性と
産業上の利用価値を有している。本発明に基づきなしう
る細部の修飾或いは改変であって本発明と同じ効果を達
成可能な設計的事項はいずれも本発明の請求範囲に属す
るものとする。In summary, the structure of the bottom electrode of the DC arc furnace according to the present invention is more durable than the known ones, and meets the needs of economy and use. Has industrial utility value. Any design modifications that can be made based on the present invention and that can achieve the same effects as the present invention are all included in the claims of the present invention.
【図１】周知の直流アーク炉の構造断面図である。FIG. 1 is a structural sectional view of a known DC arc furnace.
【図２】本発明の炉底電極と直流アーク炉の炉体間の結
合関係を示す分解斜視図である。FIG. 2 is an exploded perspective view showing a connection relationship between a furnace bottom electrode of the present invention and a furnace body of a DC arc furnace.
【図３】本発明の炉底電極の斜視図である。FIG. 3 is a perspective view of a furnace bottom electrode according to the present invention.
【図４】本発明の炉底電極の分解斜視図である。FIG. 4 is an exploded perspective view of a furnace bottom electrode according to the present invention.
【図５】本発明の直流アーク炉の炉底電極を直流アーク
炉の炉底に結合した状態を示す断面図である。FIG. 5 is a cross-sectional view showing a state in which a bottom electrode of the DC arc furnace of the present invention is connected to the bottom of the DC arc furnace.
【図６】本発明の直流アーク炉の炉底電極の内部に溶融
鉛液が流入した状態を示す断面図である。FIG. 6 is a cross-sectional view showing a state in which a molten lead liquid has flowed into a bottom electrode of the DC arc furnace according to the present invention.
【図７】本発明の直流アーク炉の炉底電極の第２実施例
の分解斜視図である。FIG. 7 is an exploded perspective view of a second embodiment of the bottom electrode of the DC arc furnace according to the present invention.
【図８】本発明の第２実施例の炉底電極を直流アーク炉
の炉底に結合した状態を示す断面図である。FIG. 8 is a sectional view showing a state in which the bottom electrode of the second embodiment of the present invention is connected to the bottom of a DC arc furnace.
【図９】周知の直流アーク炉の炉底電極と直流アーク炉
の炉体間の結合関係を示す分解斜視図である。FIG. 9 is an exploded perspective view showing a connection relationship between a bottom electrode of a known DC arc furnace and a furnace body of the DC arc furnace.
【図１０】周知の直流アーク炉の炉底電極の斜視図であ
る。FIG. 10 is a perspective view of a bottom electrode of a known DC arc furnace.
【図１１】周知の直流アーク炉の炉底電極の分解斜視図
である。FIG. 11 is an exploded perspective view of a bottom electrode of a known DC arc furnace.
【図１２】周知の直流アーク炉の炉底電極を直流アーク
炉の炉底に結合した状態を示す断面図である。FIG. 12 is a cross-sectional view showing a state in which a bottom electrode of a known DC arc furnace is connected to a furnace bottom of the DC arc furnace.
【図１３】周知の直流アーク炉の炉底電極の構造におい
て絶縁層が破壊され溶融金属がその内部に流入し、金属
液が連接シートに接触する状態を示す断面図である。FIG. 13 is a cross-sectional view showing a state in which an insulating layer is broken in a known bottom electrode structure of a DC arc furnace, a molten metal flows into the inside thereof, and a metal liquid contacts a connecting sheet.
１０ 炉体 １２ 炉頂電極 １４ 炉底電極 １６ 炉底 ２０ 穿孔 ２２ 電極凸縁構造 ２４ ボルト ２６ ピン ２８ 開孔 ３０ 電極本体 ３２ 環縁 ３４ 連接シート ３６ ボルト ３８ 環状空間 ４２ 絶縁環 ４４ 絶縁環 ４６ 絶縁嵌め輪 ４８ 粉状の耐火材料 ５０ 溶融鉛液 １１４ 炉底電極装置 １２２ 凸縁構造 １３０ 電極本体 １３２ 電極環縁 １３４ 連接シート １４０ ボルト １４６ 絶縁嵌め輪 ２００ 貫通孔 ２０２ 半円形部材 ２０４ 半円形部材 ２０６ 収納槽 ２０８ 外凸縁 ２１０ 内凸縁 ２１２ 貫通孔 ２１４ 固定フランジ ２１５ 絶縁環 ２１６ ネジ孔 ２１７ 絶縁環 ２１８ 絶縁嵌め輪 ２２０ 連接フランジ ２２２ 貫通孔 ２２４ 孔 ２２６ 孔 ２２８ ボルト ２３０ 絶縁環 ２３２ 絶縁環 ２４０ 排鉛孔 ３０１ 外縁部分 ３０３ 斜面 ３０５ 斜面 ３０７ 絶縁環 ４９ 排鉛孔 DESCRIPTION OF SYMBOLS 10 Furnace body 12 Furnace top electrode 14 Furnace bottom electrode 16 Furnace bottom 20 Drilling 22 Electrode protruding structure 24 Bolt 26 Pin 28 Opening 30 Electrode main body 32 Ring edge 34 Connecting sheet 36 Bolt 38 Annular space 42 Insulation ring 44 Insulation ring 46 Insulation Fitting ring 48 Powdered refractory material 50 Molten lead liquid 114 Furnace bottom electrode device 122 Projecting edge structure 130 Electrode main body 132 Electrode rim 134 Connecting sheet 140 Bolt 146 Insulating fitting ring 200 Through hole 202 Semicircular member 204 Semicircular member 206 Storage Tank 208 Outer convex edge 210 Inner convex edge 212 Through hole 214 Fixed flange 215 Insulation ring 216 Screw hole 217 Insulation ring 218 Insulation fitting ring 220 Connecting flange 222 Through hole 224 hole 226 hole 228 Bolt 230 Insulation ring 232 Insulation ring 240 Lead hole 301 Outer edge part 303 Slope 305 Slope Surface 307 Insulation ring 49 Lead drain hole
Claims (19)
炉底に設けられた少なくとも一つの孔に設置され、該電
極本体に一つの環縁が設けられた、上記電極本体、 連接シートとされ、環状の収納槽を具備し、該収納槽が
内壁部と外壁部を具備し、該収納槽の内壁部と外壁部の
上端が内向きと外向きに延伸されて内凸縁と外凸縁が形
成され、該内凸縁が該環縁の下表面に結合され、該外凸
縁が該炉底に結合され、該収納槽が径方向において該環
縁と炉底の孔の内縁の間にほぼ位置する、上記連接シー
ト、 以上を具備したことを特徴とする、直流アーク炉の炉底
電極の構造。1. An electrode body comprising a metal rod, provided in at least one hole provided in a bottom of an arc furnace, and provided with one ring edge in the electrode body. The storage tank has an inner wall portion and an outer wall portion, and the upper ends of the inner wall portion and the outer wall portion of the storage tank extend inward and outward to form an inner convex edge and an outer edge. A convex edge is formed, the inner convex edge is coupled to a lower surface of the annular edge, the outer convex edge is coupled to the hearth, and the storage tank is radially inner edge of the annular edge and a hole in the hearth. The connection sheet, which is located substantially between the electrodes, The structure of a bottom electrode of a DC arc furnace, comprising:
孔の孔壁にかけて階段状の不連続表面が形成されたこと
を特徴とする、請求項１に記載の直流アーク炉の炉底電
極の構造。2. The furnace bottom from the inner surface of the outer wall of the storage tank.
Step-shaped discontinuous surface formed over the hole wall
The bottom electrode of the DC arc furnace according to claim 1, characterized in that:
Polar structure .
らに一つの環状の連接フランジを具備し、該連接フラン
ジが連接シートの外凸縁と炉底の間に設置されたことを
特徴とする、請求項１に記載の直流アーク炉の炉底電極
の構造。3. The structure of the bottom electrode of the DC arc furnace further comprises one annular connecting flange, wherein the connecting flange is provided between the outer convex edge of the connecting sheet and the furnace bottom. The structure of the bottom electrode of the DC arc furnace according to claim 1.
縁の下表面の間に一つの絶縁環が設けられたことを特徴
とする、請求項１に記載の直流アーク炉の炉底電極の構
造。4. The bottom of a DC arc furnace according to claim 1, wherein one insulating ring is provided between an inner convex edge of the connecting sheet and a lower surface of a ring edge of the electrode body. Electrode structure.
いて、さらに一つの環状の固定フランジを具備し、該固
定フランジが電極本体の環縁の上表面の上に設置された
ことを特徴とする、請求項１に記載の直流アーク炉の炉
底電極の構造。5. The structure of the bottom electrode of the DC arc furnace, further comprising one annular fixing flange, wherein the fixing flange is installed on an upper surface of a ring edge of the electrode body. The structure of the bottom electrode of the DC arc furnace according to claim 1.
鉛液を収容し、該収納槽の底部に収納した溶融鉛液の排
出用の少なくとも一つの排鉛孔が設けられたことを特徴
とする、請求項１に記載の直流アーク炉の炉底電極の構
造。6. The storage tank contains molten lead liquid leaking into the electrode body, and at least one lead discharge hole for discharging the molten lead liquid stored in the bottom of the storage tank is provided. The structure of the bottom electrode of the DC arc furnace according to claim 1, wherein:
てボルトを利用しての炉底への結合に供されることを特
徴とする、請求項１に記載の直流アーク炉の炉底電極の
構造。7. The direct current arc furnace according to claim 1, wherein a hole is formed in an outer convex edge of the connecting sheet to be connected to a furnace bottom using bolts. Bottom electrode structure.
けられた開孔に結合されることで炉体に結合され、前記
炉底と炉体の底端の開孔の間に一つの絶縁環が設けられ
たことを特徴とする、請求項１に記載の直流アーク炉の
炉底電極の構造。8. The furnace bottom is connected to a furnace body by being connected to an opening provided at a bottom end of a furnace body of an arc furnace, and the furnace bottom is connected to an opening at the bottom end of the furnace body. The structure of a bottom electrode of a direct current arc furnace according to claim 1, wherein one insulating ring is provided on the bottom.
部と炉底の孔の孔壁の間に位置し、収納溝の外壁部の内
側面から連接フランジの内縁さらに炉底の孔の孔壁にか
けて階段状の不連続の表面が形成されたことを特徴とす
る、請求項３に記載の直流アーク炉の炉底電極の構造。 9. An inner wall of the connection flange is an outer wall of a storage tank.
Between the bottom wall and the bottom wall of the furnace bottom.
From the side to the inner edge of the connecting flange and to the hole wall of the hole in the furnace bottom
And a step-shaped discontinuous surface is formed.
The structure of the bottom electrode of the DC arc furnace according to claim 3.
向きに延伸されて連接シートの外凸縁の外径を超過し、
連接フランジの外縁から連接シートの外凸縁の外径にか
けて階段状の不連続の表面が形成されたことを特徴とす
る、請求項３に記載の直流アーク炉の炉底電極の構造。 10. An outer edge of the connecting flange is radially outward.
It is stretched in the direction and exceeds the outer diameter of the outer convex edge of the connecting sheet,
From the outer edge of the connecting flange to the outer diameter of the outer convex edge of the connecting sheet
And a step-shaped discontinuous surface is formed.
The structure of the bottom electrode of the DC arc furnace according to claim 3.
縁の間に一つの絶縁環が設けられたことを特徴とする、
請求項３に記載の直流アーク炉の炉底電極の構造。11. An insulating ring is provided between the connecting flange and an outer convex edge of the connecting sheet.
The structure of the bottom electrode of the DC arc furnace according to claim 3.
絶縁環が設けられたことを特徴とする、請求項３に記載
の直流アーク炉の炉底電極の構造。12. The structure of a bottom electrode of a DC arc furnace according to claim 3, wherein one insulating ring is provided between the connection flange and the furnace bottom.
ルトを利用しての炉底への結合に供されることを特徴と
する、請求項３に記載の直流アーク炉の炉底電極の構
造。13. The structure of a bottom electrode of a DC arc furnace according to claim 3, wherein a hole is provided in the connecting flange to be connected to a bottom using a bolt. .
間に絶縁環が設置されたことを特徴とする、請求項５に
記載の直流アーク炉の炉底電極の構造。14. The structure of the bottom electrode of the DC arc furnace according to claim 5, wherein an insulating ring is provided between the fixed flange and a ring edge of the electrode body.
縁嵌め輪が套設されたことを特徴とする、請求項５に記
載の直流アーク炉の炉底電極の構造。15. The structure of the bottom electrode of the DC arc furnace according to claim 5, wherein one insulating fitting ring is provided on an inner edge of the fixing flange.
外向きに突出して収納槽の内壁部の外壁部と対向する面
を超過し、固定フランジの外側縁から収納溝の内壁部の
外壁部と対向する面にかけて階段状の不連続の表面が形
成されたことを特徴とする、請求項５に記載の直流アー
ク炉の炉底電極の構造。 16. An outer edge of the fixing flange extends radially.
A surface that projects outward and faces the outer wall of the inner wall of the storage tank
From the outer edge of the fixing flange to the inner wall of the storage groove.
Step-shaped discontinuous surface is formed over the surface facing the outer wall
6. The direct current arc according to claim 5, wherein:
Of the bottom electrode of the furnace.
シートの内凸縁に整合する孔が設けられ、ボルトによる
これら三者の結合に供されることを特徴とする、請求項
５に記載の直流アーク炉の炉底電極の構造。17. The fixing flange according to claim 5, wherein a hole is provided which is aligned with an annular edge of the fixing flange and an inwardly projecting edge of the connecting sheet, and is used for connecting the three with bolts. Of the bottom electrode of a DC arc furnace.
斜面が形成され、該斜面が炉底に形成された排鉛孔の位
置にほぼ整合するよう設けられ、該斜面が該排鉛孔より
排出された鉛液を案内することを特徴とする、請求項１
０に記載の直流アーク炉の炉底電極の構造。18. A slope is formed at an outer edge portion of the connecting flange, and the slope is provided so as to substantially match a position of a lead hole formed in a furnace bottom, and the slope is discharged from the lead hole. The lead liquid guided is guided.
0. The structure of the bottom electrode of the DC arc furnace according to 0.
嵌め輪が套設されたことを特徴とする、請求項１５に記
載の直流アーク炉の炉底電極の構造。19. The structure of the bottom electrode of a DC arc furnace according to claim 15, wherein an insulating fitting ring is provided on an outer peripheral surface of a ring edge of the electrode body.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11288026A JP3129714B1 (en) | 1999-10-08 | 1999-10-08 | Structure of bottom electrode of DC arc furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11288026A JP3129714B1 (en) | 1999-10-08 | 1999-10-08 | Structure of bottom electrode of DC arc furnace |
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| Publication Number | Publication Date |
|---|---|
| JP3129714B1 true JP3129714B1 (en) | 2001-01-31 |
| JP2001108378A JP2001108378A (en) | 2001-04-20 |
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ID=17724866
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115127353A (en) * | 2022-06-15 | 2022-09-30 | 中冶赛迪工程技术股份有限公司 | Long-life transverse air-cooled direct-current arc furnace bottom electrode |
-
1999
- 1999-10-08 JP JP11288026A patent/JP3129714B1/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115127353A (en) * | 2022-06-15 | 2022-09-30 | 中冶赛迪工程技术股份有限公司 | Long-life transverse air-cooled direct-current arc furnace bottom electrode |
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| Publication number | Publication date |
|---|---|
| JP2001108378A (en) | 2001-04-20 |
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