JP3228764B2 - Steelmaking arc furnace and tapping method - Google Patents
Steelmaking arc furnace and tapping methodInfo
- Publication number
- JP3228764B2 JP3228764B2 JP24848991A JP24848991A JP3228764B2 JP 3228764 B2 JP3228764 B2 JP 3228764B2 JP 24848991 A JP24848991 A JP 24848991A JP 24848991 A JP24848991 A JP 24848991A JP 3228764 B2 JP3228764 B2 JP 3228764B2
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- tapping
- degrees
- furnace body
- steelmaking
- 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.)
- Expired - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ティースパウト方式の
出鋼樋を備えた製鋼用アーク炉、およびその出鋼方法に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steelmaking arc furnace provided with a steel spout type tapping gutter and a tapping method therefor.
【０００２】[0002]
【従来の技術】製鋼用アーク炉の出湯方式には、（イ）
図６に示すような、炉側面２に取りつけられた出湯樋
４を経て取鍋に受鋼する樋出鋼方式、（ロ） 図７に示
すような、炉底６から溶鋼を出湯するボトムタッピング
方式、（ハ） 図８に示すような、出湯樋８の取付け角
度を大きくとったティースパウト方式、等がある。2. Description of the Related Art The tapping method of a steelmaking arc furnace includes the following (a).
As shown in FIG. 6, a gutter tapping system in which steel is received in a ladle via a tapping gutter 4 attached to the furnace side 2, and (b) bottom tapping for tapping molten steel from the furnace bottom 6 as shown in FIG. System (c) As shown in FIG. 8, there is a tea spout system in which the mounting angle of the tapping gutter 8 is large.
【０００３】[0003]
【発明が解決しようとする課題】上記（ハ）のティース
パウト方式において、スラグを炉内に残して取鍋に流出
させないためには、（１） 出湯口の位置、口径、角度
を適正に設定することが必要であり、（２） さらに、
出湯時の炉体の傾動操作を適正に行わなければならな
い。本発明は、これらの点に関して、その適正範囲を提
供することを目的とするものである。In the tea spout method (c) described above, in order to prevent slag from leaving in the furnace and flowing out to the ladle, (1) properly set the position, diameter and angle of the tap hole. (2)
The furnace body must be properly tilted when tapping. An object of the present invention is to provide an appropriate range in these respects.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成するため
の本発明に係る製鋼用アーク炉およびその出鋼方法は、
次の通りである。ティースパウト方式の出鋼樋を備えた
製鋼用アーク炉において、出湯口の位置を、出湯に際し
て、炉体を１５−４０度傾斜させたとき炉内の溶湯の中
に浸漬される位置とするとともに、炉体を３５−４０度
傾斜させたとき鋼浴の最深部に位置する位置とし、出湯
口の口径を、直径１５０−２５０ｍｍの範囲に設定し、
炉内から樋に至る出湯口の流路を耐火物製チューブで構
成し、該耐火製チューブを、炉のシルレベルに対して２
５−３０度の範囲で傾斜させた、ことを特徴とする製鋼
用アーク炉。ティースパウト方式の出鋼樋を備え、出湯
口の位置を、出湯に際して、炉体を１５−４０度傾斜さ
せたとき炉内の溶湯の中に浸漬される位置とするととも
に、炉体を３５−４０度傾斜させたとき鋼浴の最深部に
位置する位置とし、出湯口の口径を、直径１５０−２５
０ｍｍの範囲に設定し、炉内から樋に至る出湯口の流路
を耐火物製チューブで構成し、該耐火製チューブを、炉
のシルレベルに対して２５−３０度の範囲で傾斜させ
た、製鋼用アーク炉における出鋼方法において、全出湯
量の約半分までは炉体の傾斜角度を２０度以下にして出
湯を行い、残り半分の出湯時には、炉体を２０度から速
やかに傾動させて、３５−４０度の範囲で出湯を行い、
炉内に残る溶湯が１０−２０％となった時点で、炉体を
速やかに水平にもどす、ことを特徴とする製鋼用アーク
炉の出鋼方法。SUMMARY OF THE INVENTION In order to achieve the above object, an arc furnace for steel making and a tapping method according to the present invention are provided.
It is as follows. In a steelmaking arc furnace equipped with a teaspout tapping gutter, the tapping hole is positioned so that, when tapping, the furnace body is immersed in the molten metal in the furnace when the furnace body is inclined by 15 to 40 degrees. , The furnace body is inclined at 35-40 degrees and the position located at the deepest part of the steel bath, the diameter of the tap hole is set in the range of 150-250 mm in diameter,
The flow path of the tap hole from the furnace to the gutter is constituted by a refractory tube.
An arc furnace for steelmaking, characterized by being inclined in a range of 5 to 30 degrees. A tapping spout of a tea spout system is provided, and the tap hole is positioned so that it is immersed in the molten metal in the furnace when the furnace body is tilted by 15 to 40 degrees at the time of tapping. When the steel bath is inclined at 40 degrees, it is located at the deepest part of the steel bath.
0 mm range, the flow path of the tap hole from the furnace to the gutter was configured with a refractory tube, the refractory tube was inclined in the range of 25-30 degrees to the sill level of the furnace, In the tapping method in a steelmaking arc furnace, tapping is performed by setting the inclination angle of the furnace body to 20 degrees or less for up to about half of the total tapping amount, and when tapping the remaining half, the furnace body is quickly tilted from 20 degrees. , The tapping in the range of 35-40 degrees,
A method for tapping an arc furnace for steelmaking, wherein the furnace body is quickly returned to a horizontal position when the molten metal remaining in the furnace reaches 10 to 20%.
【０００５】[0005]
【作用】上記の構成をもつ製鋼用アーク炉を用い、上記
の出鋼方法にて出鋼を行えば、スラグを炉内に残したま
ま溶鋼のみを取鍋に取出すことができ、しかも炉体の冷
却パネル等を損傷することもない。By using the steelmaking arc furnace having the above structure and tapping by the tapping method described above, only the molten steel can be taken out from the ladle with the slag remaining in the furnace. There is no damage to the cooling panel and the like.
【０００６】[0006]
【実施例】図１−図２は本発明の一実施例に係る製鋼用
アーク炉を示しており、図３−図５はその製鋼用アーク
炉を用いた出鋼方法を示している。1 to 2 show an arc furnace for steel making according to an embodiment of the present invention, and FIGS. 3 to 5 show a tapping method using the arc furnace for steel making.
【０００７】図１−図２において、アーク炉１０は炉底
１２、炉側壁で炉底と同様の構造を有する炉側壁下部１
４、炉側壁で水冷パネルから成る炉側壁上部１６、炉側
壁下部１４に取付けられた出鋼樋１８から成る。In FIG. 1 to FIG. 2, an arc furnace 10 has a furnace bottom 12 and a furnace side wall lower part 1 having the same structure as the furnace bottom.
4. An upper part 16 of the furnace side wall made of a water-cooled panel, and a tapping gutter 18 attached to a lower part 14 of the furnace side wall.
【０００８】アーク炉１０の炉底１２は、鉄板の炉殻２
０、この炉殻２０の内側に耐火レンガで構築された炉底
２２、炉底２２の上に耐火物のスタンピングで構築され
た炉床２４から成る。The furnace bottom 12 of the arc furnace 10 is made of an iron plate furnace shell 2.
0, a furnace bottom 22 made of refractory brick inside the furnace shell 20, and a hearth 24 built on the furnace bottom 22 by stamping of refractory.
【０００９】アーク炉１０の側壁は、湯面（鋼浴シルレ
ベル）より２００−４００ｍｍより下側の炉側壁下部１
４が炉底と同じ構成とされ、それより上側の炉側壁上部
１６は、炉殻２０に水冷パネル２６を支持させた構造か
ら成る。The side wall of the arc furnace 10 has a lower side wall 1 of 200 to 400 mm below the surface of the molten metal (steel bath sill level).
4 has the same structure as the furnace bottom, and the upper part 16 of the furnace side wall above the furnace bottom has a structure in which a furnace shell 20 supports a water-cooling panel 26.
【００１０】出鋼樋１８は、炉側壁の下側の部分１４で
炉内と連通するように設けられる。出鋼樋１８は、炉側
壁の下側の部分１４を貫通するように設けられた耐火物
から成る出鋼口チューブ２８によって、炉内と連通され
る。A tapping gutter 18 is provided at the lower portion 14 of the furnace side wall so as to communicate with the inside of the furnace. The tapping gutter 18 is communicated with the inside of the furnace by a tapping port tube 28 made of a refractory provided so as to penetrate the lower portion 14 of the furnace side wall.
【００１１】出湯口３０（出鋼口チューブ２８の炉内側
への開口端）の位置は、出湯に際して、炉体を１５−４
０度傾斜させたとき炉内の溶湯の中に浸漬される位置と
されるとともに、炉体を３５−４０度傾斜させたとき鋼
浴の最深部に位置する位置とされている。The position of the tap hole 30 (open end of the tap hole tube 28 toward the inside of the furnace) is set at 15-4 when the tapping is performed.
When the furnace body is inclined at 0 degree, it is immersed in the molten metal in the furnace, and when the furnace body is inclined at 35-40 degrees, it is located at the deepest part of the steel bath.
【００１２】１５−４０度の数値をとる理由は、炉体傾
斜が約１５度で出鋼が始められ、出鋼の最終段階で約４
０度に炉体が傾斜されるので、出鋼の始めから終りま
で、出湯口３０が溶鋼中にあり、上面のスラグに出湯口
３０がさらされないようにするためである。たとえば、
もし炉体を１５度傾ける前に溶鋼表面がくる位置に出湯
口３０を設けると、出湯初期に表面にあるスラグが取鍋
に流れ出てしまうので、そのような事態を避けるためで
ある。The reason for taking the value of 15-40 degrees is that tapping is started at a furnace body inclination of about 15 degrees and about 4 degrees at the final stage of tapping.
Since the furnace body is inclined at 0 degrees, the tap hole 30 is in the molten steel from the beginning to the end of tapping, so that the tap hole 30 is not exposed to the slag on the upper surface. For example,
If the tap hole 30 is provided at a position where the molten steel surface comes before the furnace body is tilted by 15 degrees, the slag on the surface flows out to the ladle in the early stage of tapping, so that such a situation is avoided.
【００１３】また、３５−４０度の数値の理由は、出湯
の最終段階で、炉体はこの角度範囲に在る角度に傾けら
れるので、そのときにも出湯口が鋼浴の最深部にあっ
て、スラグが取鍋に流れ出ないようにするためである。Also, the reason for the numerical value of 35-40 degrees is that the furnace body is inclined at an angle within this angle range at the final stage of tapping, so that the tap hole is also located at the deepest part of the steel bath. This is to prevent slag from flowing into the ladle.
【００１４】また、出湯口の口径は１５０−２５０ｍｍ
に選定されている。その理由は、１５０ｍｍより小径だ
と溶湯が流れ出るのに時間がかかりすぎるからであり、
また２５０ｍｍより大だと溶湯の流れが速すぎてスラグ
を巻き込むおそれがあるからである。The diameter of the tap hole is 150-250 mm.
Has been selected. The reason is that if the diameter is smaller than 150 mm, it takes too much time for the molten metal to flow out,
On the other hand, if it is larger than 250 mm, the flow of the molten metal is too fast and slag may be involved.
【００１５】炉内から出鋼樋１８に至る出鋼口チューブ
２８は、耐火物製のチューブから成るが、その角度は炉
のシルレベルに対して、したがって水平面に対して２５
−３０度の範囲に選定されている。その理由は、出湯に
あたって、スラグを流出させないためである。すなわ
ち、炉のシルレベルに対して出鋼口チューブ２８を２５
−３０度傾けておけば、出湯初期に炉体を１５−２０度
傾けたときにも、出湯口３０はなおスラグより下側の鋼
浴中に位置し、出湯初期のスラグの流出が防げる。The tapping tube 28 from the furnace to the tapping gutter 18 comprises a tube of refractory material, the angle of which is 25 degrees with respect to the sill level of the furnace and thus with respect to the horizontal.
It is selected in the range of -30 degrees. The reason for this is to prevent slag from flowing out when tapping. That is, the tap hole tube 28 is set at 25 with respect to the sill level of the furnace.
If the furnace body is inclined at −30 degrees, even when the furnace body is inclined 15-20 degrees at the beginning of tapping, the tap hole 30 is still located in the steel bath below the slag, and the outflow of slag at the beginning of tapping can be prevented.
【００１６】つぎに、上記装置を用いて実施される本発
明の出鋼方法（したがって、上記本発明装置の作用でも
ある）を、図３−図５を参照して説明する。出鋼するに
は、炉体を１５度以上に傾ける。図３は炉体を１０度傾
けた状態を示しており、傾動角度１０度では溶湯は流出
しない。Next, the tapping method of the present invention (therefore, this is also an operation of the present invention) carried out by using the above-described apparatus will be described with reference to FIGS. For tapping, the furnace body is tilted to 15 degrees or more. FIG. 3 shows a state where the furnace body is tilted at 10 degrees, and the molten metal does not flow out at a tilt angle of 10 degrees.
【００１７】出鋼するために、まず、図４に示すよう
に、炉体を１５−２０度に傾動させ、２０度以下で全出
湯量の約半分までの出湯を行う。傾動角度２０度以下で
はスラグは流出しないのでゆっくり傾動すればよい。出
鋼初期に２０度以上傾動すると、水冷パネル２６を溶損
するので、２０度以上の傾動は許されない。For tapping, first, as shown in FIG. 4, the furnace body is tilted to 15 to 20 degrees, and tapping is performed at 20 degrees or less to about half of the total tapping amount. If the tilt angle is 20 degrees or less, the slag does not flow out, so that it is sufficient to tilt slowly. If the tilt is more than 20 degrees at the beginning of tapping, the water-cooled panel 26 is melted, and the tilt of more than 20 degrees is not allowed.
【００１８】つぎに、鋼板の出湯時には、図５に示すよ
うに、炉体を２０度から速やかに傾動させ、３５−４０
度の範囲で出湯を行う。この間は２０度から連続的に傾
動を緩慢に大にしていってもよいが、傾動が遅れるとス
ラグが流出するので、スラグ流出防止上速やかに３５−
４０度にするのが望ましい。また、３５−４０度傾けて
も出鋼口は鋼浴最深部にあるので、鋼浴が全量出てスラ
グのみが炉内に残っている状態になるまでは、スラグが
流出することはない。Next, at the time of tapping the steel plate, the furnace body is quickly tilted from 20 degrees as shown in FIG.
Perform hot water in a range of degrees. During this time, the tilt may be gradually increased continuously from 20 degrees. However, if the tilt is delayed, the slag flows out.
It is desirable to set it to 40 degrees. Even when the steel tap is inclined at 35 to 40 degrees, the tapping port is located at the deepest part of the steel bath. Therefore, the slag does not flow out until the steel bath is completely discharged and only the slag remains in the furnace.
【００１９】炉内に残る溶湯が１０−２０％となった時
点で炉体を速やかに水平にもどし、１０−２０％の溶湯
を炉内に残したまま流動を停止させる。これによって、
スラグは全量が炉内に残り、スラグが溶鋼とともに取鍋
に流出することはない。When the molten metal remaining in the furnace reaches 10-20%, the furnace body is quickly returned to a horizontal position, and the flow is stopped while the molten metal of 10-20% remains in the furnace. by this,
All of the slag remains in the furnace, and the slag does not flow out to the ladle together with the molten steel.
【００２０】なお、上記説明においては、製鋼用アーク
炉を例にとって説明したが、本発明は製鋼用アーク炉に
限らず、金属溶解炉全搬に応用可能であり、本発明の製
鋼用アーク炉の概念の中に金属溶解炉を含むものとす
る。In the above description, a steelmaking arc furnace has been described as an example. However, the present invention is not limited to a steelmaking arc furnace, but can be applied to a metal melting furnace as a whole. The concept of includes a metal melting furnace.
【００２１】[0021]
【発明の効果】本発明によれば、次の効果を得る。 （イ） スラグを炉内に残して取鍋に流出させないよう
にすることができる。 （ロ） そのための、製鋼用アーク炉の出鋼樋近傍の構
造の適正範囲および出鋼方法の適正仕様を提供できた。 （ハ） スラグの流出を防止して、後工程における２次
精錬の効率を高め、さらに鋼材の品質を向上させる。 （ニ） 既存の樋出鋼方式のアーク炉を、大きな設備改
造を伴うことなく、ティースパウト方式の炉に変更でき
る。According to the present invention, the following effects can be obtained. (A) The slag can be left in the furnace so as not to flow out to the ladle. (B) For this purpose, the appropriate range of the structure near the tapping gutter of the steelmaking arc furnace and the appropriate specifications of the tapping method could be provided. (C) Prevent the slag from flowing out, increase the efficiency of secondary refining in the post-process, and further improve the quality of steel products. (D) Existing guttering-type arc furnaces can be changed to teaspout-type furnaces without major equipment modifications.
【図１】本発明の一実施例に係る製鋼用アーク炉の出湯
口近傍部分の断面図である。FIG. 1 is a sectional view of a part near a taphole of a steelmaking arc furnace according to one embodiment of the present invention.
【図２】図１の出湯口近傍の炉内から見た正面図であ
る。FIG. 2 is a front view of the vicinity of the tap hole in FIG. 1 as viewed from inside the furnace.
【図３】本発明の一実施例に係る製鋼用アーク炉の出鋼
方法における炉体傾動角度１０度の炉体および溶湯断面
図である。FIG. 3 is a sectional view of a furnace body and a molten metal having a furnace body tilting angle of 10 degrees in a tapping method of a steelmaking arc furnace according to one embodiment of the present invention.
【図４】炉体傾動角度２０度の炉体および溶湯断面図で
ある。FIG. 4 is a sectional view of a furnace body and a molten metal at a furnace body tilt angle of 20 degrees.
【図５】炉体傾動角度４０度の炉体および溶湯断面図で
ある。FIG. 5 is a sectional view of a furnace body and a molten metal having a furnace body tilt angle of 40 degrees.
【図６】従来の樋出鋼方式の製鋼用アーク炉の断面図で
ある。FIG. 6 is a sectional view of a conventional steelmaking arc furnace of the guttering method.
【図７】従来のボトムタッピング方式の製鋼用アーク炉
の断面図である。FIG. 7 is a sectional view of a conventional bottom tapping type steelmaking arc furnace.
【図８】従来のティースパウト方式の製鋼用アーク炉の
断面図である。FIG. 8 is a sectional view of a conventional teaspout type steelmaking arc furnace.
１０ アーク炉 １２ 炉底 １４ 炉側壁下部 １６ 炉側壁上部 １８ 出鋼樋 ２０ 炉殻 ２６ 水冷パネル ２８ 出鋼口チューブ ３０ 出湯口 DESCRIPTION OF SYMBOLS 10 Arc furnace 12 Furnace bottom 14 Lower part of furnace side wall 16 Upper part of furnace side wall 18 Steel tapping gutter 20 Furnace shell 26 Water cooling panel 28 Steel tapping port tube 30 Taphole
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭50−92807（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C21C 5/52 F27B 3/06 F27B 3/08 F27B 3/19 ────────────────────────────────────────────────── (5) References JP-A-50-92807 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) C21C 5/52 F27B 3/06 F27B 3 / 08 F27B 3/19
Claims (2)
鋼用アーク炉において、 出湯口の位置を、出湯に際して、炉体を１５−４０度傾
斜させたとき炉内の溶湯の中に浸漬される位置とすると
ともに、炉体を３５−４０度傾斜させたとき鋼浴の最深
部に位置する位置とし、 出湯口の口径を、直径１５０−２５０ｍｍの範囲に設定
し、 炉内から樋に至る出湯口の流路を耐火物製チューブで構
成し、該耐火製チューブを、炉のシルレベルに対して２
５−３０度の範囲で傾斜させた、 ことを特徴とする製鋼用アーク炉。1. A steelmaking arc furnace provided with a teaspout tapping gutter, wherein the position of the taphole is immersed in the molten metal in the furnace when the furnace body is inclined by 15-40 degrees when tapping. At the deepest point of the steel bath when the furnace body is tilted at 35-40 degrees, and the diameter of the tap hole is set within the range of 150-250 mm in diameter, and it reaches the gutter from inside the furnace. The flow path of the tap hole is constituted by a refractory tube, and the refractory tube is connected to the sill level of the furnace by 2 mm.
An arc furnace for steelmaking, which is inclined in a range of 5 to 30 degrees.
斜させたとき炉内の溶湯の中に浸漬される位置とすると
ともに、炉体を３５−４０度傾斜させたとき鋼浴の最深
部に位置する位置とし、 出湯口の口径を、直径１５０−２５０ｍｍの範囲に設定
し、 炉内から樋に至る出湯口の流路を耐火物製チューブで構
成し、該耐火製チューブを、炉のシルレベルに対して２
５−３０度の範囲で傾斜させた、 製鋼用アーク炉における出鋼方法において、 全出湯量の約半分までは炉体の傾斜角度を２０度以下に
して出湯を行い、 残り半分の出湯時には、炉体を２０度から速やかに傾動
させて、３５−４０度の範囲で出湯を行い、 炉内に残る溶湯が１０−２０％となった時点で、炉体を
速やかに水平にもどす、 ことを特徴とする製鋼用アーク炉の出鋼方法。2. A steel spout type tapping gutter, wherein a tap hole is positioned to be immersed in the molten metal in the furnace when the furnace body is inclined by 15 to 40 degrees upon tapping. When the furnace body is inclined at 35-40 degrees, it is located at the deepest part of the steel bath. The diameter of the tap hole is set in the range of 150-250 mm in diameter, and the flow path of the tap port from the furnace to the gutter is set. Refractory tubing, with the refractory tubing 2
In the tapping method in a steelmaking arc furnace inclined at a range of 5 to 30 degrees, tapping is performed by setting the inclination angle of the furnace body to 20 degrees or less until about half of the total tapping amount, and when tapping the other half, The furnace body is quickly tilted from 20 degrees, and tapping is performed in the range of 35-40 degrees, and when the molten metal remaining in the furnace reaches 10-20%, the furnace body is quickly returned to horizontal. A method for tapping an arc furnace for steelmaking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24848991A JP3228764B2 (en) | 1991-09-03 | 1991-09-03 | Steelmaking arc furnace and tapping method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24848991A JP3228764B2 (en) | 1991-09-03 | 1991-09-03 | Steelmaking arc furnace and tapping method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0565520A JPH0565520A (en) | 1993-03-19 |
| JP3228764B2 true JP3228764B2 (en) | 2001-11-12 |
Family
ID=17178927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24848991A Expired - Fee Related JP3228764B2 (en) | 1991-09-03 | 1991-09-03 | Steelmaking arc furnace and tapping method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3228764B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108130399B (en) * | 2017-02-28 | 2023-10-20 | 安徽工业大学 | Electric furnace capable of protecting tapping and method for protecting tapping by electric furnace |
| CN112632861B (en) * | 2020-10-21 | 2023-12-29 | 中冶南方工程技术有限公司 | Method for making tilting plan of eccentric bottom tapping of electric arc furnace |
-
1991
- 1991-09-03 JP JP24848991A patent/JP3228764B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0565520A (en) | 1993-03-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106048129B (en) | Converter high-carbon low-phosphorus terminal point control metallurgical method under a kind of phosphorus high ferro water condition | |
| US5238484A (en) | Plant for the production of molten metals and method | |
| JP3228764B2 (en) | Steelmaking arc furnace and tapping method | |
| US4761178A (en) | Process for heating molten steel contained in a ladle | |
| TW562864B (en) | A method for operating a steelmaking furnace during a steelmaking process | |
| JP3305951B2 (en) | Ladle for refining molten metal | |
| US4358313A (en) | Process for refining molten pig iron and steel | |
| RU2112045C1 (en) | Method of steel melting in converter | |
| JP2877026B2 (en) | How to protect the refining tuyere | |
| RU2097434C1 (en) | Method of converter steel melting | |
| JPH05331521A (en) | Steel tapping hole in refining furnace for steel-making | |
| RU1812212C (en) | Method of steel deoxydation in tilting open-hearth furnace | |
| JP2838190B2 (en) | Method for tapping molten metal from metal furnace | |
| RU2159289C1 (en) | Method of steel melting in converter | |
| RU2152442C1 (en) | Method of treatment of molten steel with slag | |
| SU981376A1 (en) | Method for smelting manganese-containing steels | |
| JP2806205B2 (en) | Split refining method and equipment | |
| SU516746A1 (en) | The method of alloying cast iron | |
| RU2133279C1 (en) | Method of steel melting in converter | |
| SU996456A1 (en) | Method for producing steel | |
| JPS622607B2 (en) | ||
| SU1730174A1 (en) | Method for charging open-hearth furnace with burden | |
| JP2949698B2 (en) | Cast iron manufacturing method | |
| JPH01263214A (en) | Construction of non-tilting furnace steel tapping type converter | |
| JPH0535842U (en) | Converter type metallurgical reactor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |