JPH05312482A - Molten iron discharging refractory for electric furnace - Google Patents
Molten iron discharging refractory for electric furnaceInfo
- Publication number
- JPH05312482A JPH05312482A JP14097392A JP14097392A JPH05312482A JP H05312482 A JPH05312482 A JP H05312482A JP 14097392 A JP14097392 A JP 14097392A JP 14097392 A JP14097392 A JP 14097392A JP H05312482 A JPH05312482 A JP H05312482A
- Authority
- JP
- Japan
- Prior art keywords
- molten iron
- refractory
- electric furnace
- wear ring
- discharging
- 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
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Furnace Charging Or Discharging (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は電気炉の溶鉄排出用耐火
物に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refractory for discharging molten iron in an electric furnace.
【０００２】[0002]
【従来の技術】従来の電気炉の溶鉄排出用耐火物を図面
を参照しながら説明する。図３は電気炉の炉底部に取り
付けられた従来の溶鉄排出用耐火物のセット状況を示す
垂直断面図である。電気炉の炉底部に開口部４が有り、
その開口部４の内周壁面に添ってＭｇＯ質のセッティン
グブロック５が配設され、その内孔部にウェアリングチ
ューブ３及びターミナルブロック２でなる溶鉄排出用耐
火物Ａ’が装着され、セッティングブロック５と該溶鉄
排出用耐火物Ａ’との空隙６にはＭｇＯ質の粉末が充填
される。2. Description of the Related Art A conventional refractory for discharging molten iron in an electric furnace will be described with reference to the drawings. FIG. 3 is a vertical sectional view showing a state of setting a conventional molten iron discharging refractory attached to the bottom of an electric furnace. There is an opening 4 at the bottom of the electric furnace,
A setting block 5 of MgO quality is arranged along the inner peripheral wall surface of the opening 4, and a refractory A ′ for discharging molten iron composed of the wear ring tube 3 and the terminal block 2 is attached to the inner hole of the setting block 5. A void 6 between the molten iron discharging refractory A ′ and the molten iron discharging refractory A ′ is filled with MgO powder.
【０００３】溶鉄排出用耐火物Ａ’のターミナルブロッ
ク２の固定には、ターミナルブロック２の外周に鉄製ホ
ルダー１が装着されており、その鉄製ホルダー１と電気
炉底部とをボルト又はコッターにて締め付け、固定して
いる。To fix the terminal block 2 of the refractory A'for discharging molten iron, an iron holder 1 is mounted on the outer periphery of the terminal block 2, and the iron holder 1 and the electric furnace bottom are fastened with a bolt or a cotter. , Fixed.
【０００４】従来の溶鉄排出用耐火物Ａ’は図３に示す
ように４〜５個に小割化されたウェアリングチューブ３
と１個のターミナルブロック２とを空目地にて継ぎ合わ
せて一体物として使用されていた。As shown in FIG. 3, a conventional molten iron discharging refractory A'is a wear ring tube 3 which is divided into 4 to 5 pieces.
And one of the terminal blocks 2 were joined together at an empty joint to be used as one body.
【０００５】そして各々の材質としてはウェアリングチ
ューブ３は、不焼成のＭｇＯ質又ターミナルブロック２
は焼成されたＡｌ2Ｏ3−Ｃ質が適用されている。As the respective materials, the wear ring tube 3 is made of unburned MgO or the terminal block 2.
Is applied a calcined Al 2 O 3 -C material.
【０００６】[0006]
【発明が解決しようとする課題】しかして上述のような
従来の構造では以下のような問題点が有る。However, the conventional structure as described above has the following problems.
【０００７】特に流出側のウェアリングチューブ間、又
はウェアリングチューブとターミナルブロック間に目地
部が存在するために、その部への地金差しが発生し易
い。そうした場合、オリビンサンド等の詰物がその部位
でブリッジを形成し、開口不良が発生してしまうことが
ある。また地金差しが溶鉄排出用耐火物の外周部、即ち
粉末のＭｇＯ質充填材部迄進展してしまうと、溶鉄排出
用耐火物の取換え作業が非常に困難となってしまう。又
これについては溶鉄流入側の粉末ＭｇＯ質充填材部は特
に高熱に曝露されているため熱的に焼結し易く、特に溶
鉄流入側のウェアリングチューブは取り換えが容易では
ない。In particular, since there is a joint between the wear ring tubes on the outflow side or between the wear ring tube and the terminal block, a bullion is likely to occur at that joint. In that case, a filling material such as olivine sand may form a bridge at that portion, resulting in poor opening. Further, if the metal ingot extends to the outer peripheral portion of the molten iron discharging refractory, that is, to the powdered MgO-based filler, it becomes very difficult to replace the molten iron discharging refractory. Further, regarding this, the powdered MgO filler portion on the molten iron inflow side is exposed to particularly high heat, so that it is easy to thermally sinter, and especially the wear ring on the molten iron inflow side is not easy to replace.
【０００８】更には従来ウェアリングチューブは不焼成
のＭｇＯ−Ｃ質であるため、耐酸化性が低いことに起因
して、特に溶鉄流入側の上部目地部の局部溶損が激し
く、かつ耐スポール性が低いことも相重なり、最悪の場
合、上部のウェアリングチューブが浮上してしまうこと
もある。その結果、出鋼時間のばらつきあるいはスラグ
カットがしにくい等操業上の問題点を誘発することにな
る。Furthermore, since the conventional wear ring tube is made of non-fired MgO-C material, it has a low oxidation resistance, so that local melting loss is particularly severe at the upper joint portion on the molten iron inflow side and the spall resistance is high. The poor wearability also overlaps, and in the worst case, the upper wear ring tube may float up. As a result, operating problems such as variations in tapping time or difficulty in slag cutting are caused.
【０００９】本発明は、上記従来の問題点を解決し、操
業性及び施工性ともに優れる電気炉の溶鉄排出用耐火物
を提供することを目的とするものである。An object of the present invention is to solve the above-mentioned conventional problems and to provide a refractory for discharging molten iron of an electric furnace which is excellent in operability and workability.
【００１０】[0010]
【課題を解決するための手段】本発明の電気炉の溶鉄排
出用耐火物は、電気炉のタップホール部に装着されるウ
ェアリングチューブ並びにターミナルブロックを溶鉄の
流入側から流出側に至るまで材質にしてＡｌ2Ｏ3−Ｃ質
耐火物により継ぎ目を無くした一体化された構造とす
る。又は特に溶鉄流入側の上端部のウェアリングチュー
ブの外周部が焼結し易い一部を除いてそれより以下のウ
ェアリングチューブ並びにターミナルブロックを材質に
してＡｌ2Ｏ3−Ｃ質で一体化したことを特徴とするもの
である。The refractory for discharging molten iron of an electric furnace according to the present invention comprises a wear ring tube and a terminal block mounted in a tap hole portion of the electric furnace from the inflow side to the outflow side of the molten iron. Then, an integrated structure in which the seam is made of Al 2 O 3 -C refractory is removed. Or, in particular, except for the part where the outer periphery of the upper end of the wear ring on the molten iron inflow side where sintering is likely to occur, the following wear ring tube and terminal block are used as the material and integrated with Al 2 O 3 -C quality. It is characterized by that.
【００１１】[0011]
【作用】本発明の電気炉の溶鉄排出用耐火物は、電気炉
の炉底部のタップホール部に装着され、溶鉄の流入側か
ら流出側に至るまで、即ちウェアリングチューブとター
ミナルブロックを継ぎ目の無い一体構造としているた
め、目地部への地金差し、更にはその部の局部溶損、操
業的にも目地部への地金差しに起因する詰物のブリッジ
形成による開口不良が発生することが無い。材質的にも
Ａｌ2Ｏ3−Ｃ質の焼成耐火物にてウェアリングチューブ
並びにターミナルブロックを一体にて構成しているた
め、酸化損耗の心配も無く、耐スポーリング性も良好な
ことから、ウェアリングチューブの上部が浮き上がるこ
とも無い。以上のことより、一体構造化された溶鉄排出
用耐火物を取換える際も比較的容易に、そして効率良く
作業出来る。The refractory for discharging molten iron of the electric furnace of the present invention is installed in the tap hole portion of the furnace bottom of the electric furnace and extends from the inflow side of the molten iron to the outflow side, that is, the wear ring tube and the terminal block are joined together. Since there is no integrated structure, there is a possibility that an opening failure will occur due to the formation of a bridge of the filler due to the insertion of the metal into the joint, the local melting of the joint, and the operation of the metal insertion into the joint. There is no. In terms of material, since the wear tube and the terminal block are integrally formed of Al 2 O 3 -C quality fired refractory, there is no fear of oxidation damage and good spalling resistance. The upper part of the wear ring does not float up. From the above, it is possible to work relatively easily and efficiently even when replacing the refractory for molten iron discharge that is integrally structured.
【００１２】又、特に使用後の一体構造化した溶鉄排出
用耐火物を抜き取る際、溶鉄流入側のＭｇＯ質の充填材
部は焼結し易くかつウェアリングチューブとが地金でお
おわれ取り外しが困難な場合にはウェアリングチューブ
の上部のみ分割することで作業は容易となる。Further, especially when the refractory for discharging molten iron having an integrated structure after use is taken out, the MgO-containing filler portion on the molten iron inflow side is easily sintered and the wear ring tube is covered with bare metal and is difficult to remove. In such a case, the work will be easier by dividing only the upper part of the wear ring tube.
【００１３】[0013]
【実施例】本発明の電気炉の溶鉄排出用耐火物を図面を
参照しながら説明する。図１及び図２は本発明の溶鉄排
出用耐火物Ａの垂直断面図を示している。図１では、タ
ップホールの溶鉄の流入側から流出側に至る迄一体の構
造体となっており、又図２ではタップホールの溶鉄の流
入側の上端部の一部を小割化、分割３０ａし、他は図１
と同様一体の構造体となっている。EXAMPLE A refractory for discharging molten iron of an electric furnace of the present invention will be described with reference to the drawings. 1 and 2 are vertical sectional views of a refractory material A for discharging molten iron according to the present invention. In FIG. 1, the tap hole has an integrated structure from the molten iron inflow side to the outflow side, and in FIG. 2, a part of the upper end portion of the tap hole on the molten iron inflow side is divided into small pieces 30a. And the others are shown in Figure 1.
It is a one-piece structure like.
【００１４】図２の上部小割化、分割３０ａの長さとし
ては、１５０〜２００ｍｍが適切であり、溶鉄排出用耐
火物の外周のＭｇＯ質充填材の焼締部位の長さ方向より
若干長くする必要がある。It is appropriate that the length of the upper subdivision and division 30a in FIG. 2 is 150 to 200 mm, which is slightly longer than the lengthwise direction of the crimped portion of the MgO filler on the outer periphery of the molten iron discharging refractory. There is a need to.
【００１５】図１及び図２の各々のウェアリングチュー
ブ３０並びにターミナルブロック２０は、同一の化学成
分を保持するＡｌ2Ｏ3−Ｃ質耐火物で一体成形しても構
わないが、それぞれの使用条件に応じてＣ含有量及びＡ
ｌ2Ｏ3含有量等を変えた二層構造にすることが好まし
い。更に用途に応じては三層構造としてもかまわない。The wear ring tube 30 and the terminal block 20 shown in FIGS. 1 and 2 may be integrally formed of Al 2 O 3 -C refractory having the same chemical composition, but they are used respectively. C content and A according to conditions
It is preferable to have a two-layer structure in which the content of l 2 O 3 is changed. Furthermore, a three-layer structure may be used depending on the application.
【００１６】それぞれの用途に適したＡｌ2Ｏ3−Ｃ質の
化学成分値及び物性値を表１に示す。Table 1 shows the chemical component values and physical property values of the Al 2 O 3 -C substance suitable for each application.
【００１７】[0017]
【表１】 [Table 1]
【００１８】[0018]
【発明の効果】以上、詳述したように本発明の電気炉の
溶鉄排出用耐火物は電気炉のタップホールの溶鉄の流入
側から流出側に至る上から下迄目地部の無い一体構造体
で、かつ高耐酸化性並びに高耐スポール性を保持したＡ
ｌ2Ｏ3−Ｃ質を用いていることより、目地部への地金差
し、又それに起因する開口不良、最悪の場合の操業不良
等は問題発生すること無く、更には施工性も良好であ
り、一部上部のみＭｇＯ質の充填材の焼結等により、若
干取り除きに時間がかかったならば、溶鉄排出用耐火物
の上部１５０−２００ｍｍをのみ小割化することでそれ
らも解決出来る。As described in detail above, the refractory for discharging molten iron of the electric furnace of the present invention is an integral structure having no joint portion from the top to the bottom of the tap hole of the electric furnace from the inflow side to the outflow side of the molten iron. A with high oxidation resistance and high spall resistance
Since the quality of l 2 O 3 -C is used, there is no problem with insertion of metal into joints, poor opening due to it, poor operation in the worst case, and good workability. However, if it takes some time to remove it due to sintering of the MgO-based filler only in a part of the upper part, it can be solved by only splitting the upper part of the refractory for discharging molten iron into 150 to 200 mm.
【図１】従来の電気炉へのセット状況を示した説明図で
ある。FIG. 1 is an explanatory diagram showing a setting state in a conventional electric furnace.
【図２】本発明の溶鉄排出用耐火物の縦断面図である。FIG. 2 is a vertical sectional view of a refractory for discharging molten iron according to the present invention.
【図３】本発明溶鉄排出用耐火物の別の実施例の縦断面
図である。FIG. 3 is a vertical cross-sectional view of another embodiment of the refractory for discharging molten iron of the present invention.
１ 鉄製ホルダー ２ 20 ターミナルブロック ３ 30 ウエアリングチューブ 30ａ 分割 ４ 開口部 ５ セッティングブロック ６ 空隙 Ａ Ａ’ 溶鉄排出用耐火物 1 Iron holder 2 20 Terminal block 3 30 Wear ring tube 30a Divided 4 Opening 5 Setting block 6 Void A A'Refractory for molten iron discharge
Claims (2)
アリングチューブ並びにターミナルブロックで構成され
た溶鉄排出用耐火物に於いて、黒鉛−アルミナ系耐火物
によりウェアリングチューブ並びにターミナルブロック
を継ぎ目無く溶鉄の流入側から流出側に至るまで一体に
て成形，そして焼成されていることを特徴とする電気炉
の溶鉄排出用耐火物。1. A refractory for discharging molten iron composed of a wear ring tube and a terminal block mounted in a tap hole portion of an electric furnace, wherein the wear ring tube and the terminal block are seamlessly made of a graphite-alumina refractory material. A refractory for discharging molten iron in an electric furnace, which is integrally molded and fired from the inflow side to the outflow side of molten iron.
ューブの溶鉄流入側の上端部の一部のみ分割し、他は請
求項１と同様一体にて成形，そして焼成されていること
を特徴とする請求項１の電気炉の溶鉄排出用耐火物。2. The graphite-alumina refractory material is divided into only a part of the upper end portion of the wear ring tube on the molten iron inflow side, and the other parts are integrally molded and fired as in claim 1. A refractory for discharging molten iron in an electric furnace according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14097392A JPH05312482A (en) | 1992-05-06 | 1992-05-06 | Molten iron discharging refractory for electric furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14097392A JPH05312482A (en) | 1992-05-06 | 1992-05-06 | Molten iron discharging refractory for electric furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05312482A true JPH05312482A (en) | 1993-11-22 |
Family
ID=15281149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14097392A Pending JPH05312482A (en) | 1992-05-06 | 1992-05-06 | Molten iron discharging refractory for electric furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05312482A (en) |
-
1992
- 1992-05-06 JP JP14097392A patent/JPH05312482A/en active Pending
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