JPH02125809A - Method for removing stuck metal at furnace top opening hole in converter - Google Patents
Method for removing stuck metal at furnace top opening hole in converterInfo
- Publication number
- JPH02125809A JPH02125809A JP27702388A JP27702388A JPH02125809A JP H02125809 A JPH02125809 A JP H02125809A JP 27702388 A JP27702388 A JP 27702388A JP 27702388 A JP27702388 A JP 27702388A JP H02125809 A JPH02125809 A JP H02125809A
- Authority
- JP
- Japan
- Prior art keywords
- metal
- converter
- top opening
- tapping
- opening hole
- 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
- 238000000034 method Methods 0.000 title claims description 21
- 239000002184 metal Substances 0.000 title abstract description 30
- 229910052751 metal Inorganic materials 0.000 title abstract description 30
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 23
- 239000001301 oxygen Substances 0.000 claims abstract description 23
- 238000010079 rubber tapping Methods 0.000 claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- 238000007599 discharging Methods 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims 1
- 238000007664 blowing Methods 0.000 abstract description 5
- 238000009628 steelmaking Methods 0.000 abstract description 2
- 239000010953 base metal Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（イ〉産業上の利用分野
本発明は、転炉炉口に付着した地金を除去する方法に関
するものである。DETAILED DESCRIPTION OF THE INVENTION (A) Industrial Application Field The present invention relates to a method for removing metal attached to the mouth of a converter furnace.
（ロ）従来技術
転炉作業は近年大幅に高能率化されてきてはいるか、炉
口付着地金の除去作業は手作業によるところが多く、所
要時間もかかり、高能率操業の阻害要因となっている。(b) Conventional technology Has the efficiency of converter operation been improved significantly in recent years? However, the removal of metal attached to the furnace mouth is often done manually, takes time, and is an impediment to high-efficiency operation. There is.
また、少量スラグによる脱炭工程を中心とした予備処理
銑による吹錬を実施すると、炉口地金の付着量は増大す
ることが予想される。そこで、炉口地金を効率的に除去
する方法の開発か要求されるようになった。Furthermore, if blowing using pretreated pig iron is carried out mainly through the decarburization process using a small amount of slag, it is expected that the amount of deposited metal at the furnace mouth will increase. Therefore, there was a need to develop a method to efficiently remove furnace mouth metal.
従来、転炉炉口地金を除去する方法には以下のようなも
のがある。ます、第１の方法として、上方より送酸設備
を用いて、酸素による溶断を行うものかある。この方法
では、溶出した地金が炉底に停留し、炉底耐大物を溶損
させる。また、溶出した地金には酸化物が多量に含有さ
れ、直ちに注銑すると、爆発のおそれがある。そのため
、完全に凝固するまで待機しなければならないので、能
率が低下する。さらに、この方法では炉口を観察しなが
ら溶断することができないので、地金付着のない部分の
耐火物を溶損させるおそれかある。Conventionally, there are the following methods for removing converter mouth metal. The first method is to perform fusing with oxygen using oxygen supply equipment from above. In this method, the leached metal remains at the bottom of the furnace, causing the large resistant materials at the bottom to be eroded. In addition, the leached metal contains a large amount of oxides, and there is a risk of explosion if it is poured immediately. Therefore, it is necessary to wait until it is completely solidified, which reduces efficiency. Furthermore, with this method, it is not possible to melt and cut the furnace mouth while observing it, so there is a risk that the refractories in areas where metal is not attached may be eroded and damaged.
第２の方法として、転炉をいろいろな角度で傾動させる
ことにより、固定した金具に炉口地金を接触させ掻き落
とすものがある。この方法では、掻き落とした地金が炉
外に排出され、鉄分の損失となる。また、炉口より離れ
た炉内壁に付着した地金を除去することができない。A second method involves tilting the converter at various angles to bring the metal in the furnace mouth into contact with a fixed metal fitting and scrape it off. In this method, the scraped metal is discharged outside the furnace, resulting in a loss of iron content. In addition, it is impossible to remove metal attached to the inner wall of the furnace away from the furnace mouth.
上記第１または第２のいずれの方法においても、地金除
去作業の通常の装入・注銑・吹錬・出鋼・排滓等の作業
を並行して行うことはできす、作業時間を余分にとる必
要があり、製鋼能率が低下する。In either of the first or second methods above, it is not possible to carry out normal metal removal work such as charging, pouring, blowing, tapping, and slag removal in parallel, and the work time is It is necessary to take extra, which reduces steelmaking efficiency.
（ハ）発明が解決しようとする課題
本発明が解決しようとする課題は、転炉炉口付近に付着
する地金を安全確実に除去し、しかも炉口付近および炉
床の耐火物に損傷を与えない地金除去方法を得ることに
ある。(c) Problems to be Solved by the Invention The problems to be solved by the present invention are to safely and reliably remove the base metal adhering to the vicinity of the converter mouth, and to prevent damage to the refractories in the vicinity of the furnace mouth and the hearth. The purpose is to obtain a method for removing bullion that does not cause damage.
（ニ）課題を解決するための手段
本発明の転炉炉口の地金除去方法は、転炉の出鋼中に炉
口付近に酸素ランスを接近させること、該酸素ランスに
より炉口付近に酸素を吹き付けること、出鋼口より連続
して溶鋼を排出することからなる手段によって、上記課
題を解決している。(d) Means for Solving the Problems The method for removing metal from the converter mouth of the present invention includes bringing an oxygen lance close to the vicinity of the furnace mouth during tapping of the converter; The above problems are solved by means of blowing oxygen and continuously discharging molten steel from a tapping port.
（ホ）実施例
第１図および第２図を参照して、本発明の転炉炉口の地
金除去方法の実施例について説明する。(E) Embodiment An embodiment of the method for removing metal from the converter mouth of the present invention will be described with reference to FIGS. 1 and 2.
第１図に示すように、本発明の方法においては、まず転
炉１の出鋼中に炉口１１付近に酸素ランス２を接近させ
る。酸素ランス２は台車３上に支持されて搬送される。As shown in FIG. 1, in the method of the present invention, first, the oxygen lance 2 is brought close to the furnace mouth 11 during tapping of the converter 1. The oxygen lance 2 is supported on a trolley 3 and transported.
次いで、酸素ランス２より炉口１１内に酸素を吹き付け
る。吹き付けられた酸素は炉口１１付近に付着した地金
と反応して溶融させる。溶融した地金は溶鋼とともに出
鋼口１２から連続して排出される。Next, oxygen is blown into the furnace mouth 11 from the oxygen lance 2. The blown oxygen reacts with the base metal attached near the furnace mouth 11 and melts it. The molten metal is continuously discharged from the tapping port 12 together with the molten steel.
第２図に、本発明の方法に用いる酸素ランス２の一例を
示す。酸素ランス２の外筒２１に冷却水を循環させてラ
ンスを冷却する。FIG. 2 shows an example of an oxygen lance 2 used in the method of the present invention. Cooling water is circulated through the outer cylinder 21 of the oxygen lance 2 to cool the lance.
酸素ランス２より流星５００ＯＮｍ３／ｈｒの酸素を転
炉１の炉口１１内に３０秒間供給しな。その結果、幅約
３００ｍｍ、深さ２００Ｂにわたって地金が溶解した。500ONm3/hr of oxygen was supplied from the oxygen lance 2 into the furnace mouth 11 of the converter 1 for 30 seconds. As a result, the base metal was melted over a width of about 300 mm and a depth of 200 B.
この作業を５分間継続したところ、炉口付近の地金はす
べて溶解除去できた。After continuing this operation for 5 minutes, all the metal near the furnace mouth was melted and removed.
（へ）効果 本発明の方法によれば、以下の効果が得られる。(to) Effect According to the method of the present invention, the following effects can be obtained.
■ 出鋼作業と並行して地金除去作業を実施できるので
、転炉作業の時間ロスかない。■ Since metal removal work can be carried out in parallel with steel tapping work, there is no time loss during converter work.
■ 溶出地金がすべて出鋼されるのて歩留が向上する。■ Yield is improved because all of the eluted metal is tapped.
■ 出鋼中に酸素を供給するので地金の保有熱のため、
酸素の消費量が少なくてすむ。■ Since oxygen is supplied during tapping, due to the retained heat of the metal,
Less oxygen is consumed.
第１図は本発明の方法の実施例の説明図。第２図は本発
明の方法に用いる酸素ランスの縦断面図。
１：転 炉 ２：Ｇ素うンス
３：台 車 １１：炉 口
１２：出鋼口 ２１：外 筒
２２：耐火物
特許出願人 住友金属工業株式会社FIG. 1 is an explanatory diagram of an embodiment of the method of the present invention. FIG. 2 is a longitudinal sectional view of an oxygen lance used in the method of the present invention. 1: Converter 2: G-processor 3: Cart 11: Furnace port 12: Tap port 21: Outer tube 22: Refractory patent applicant Sumitomo Metal Industries, Ltd.
Claims (1)
、該酸素ランスにより炉口付近に酸素を吹き付けること
、出鋼口より連続して溶鋼を排出することからなる転炉
炉口の地金除去方法。A method for controlling the opening of a converter, which consists of bringing an oxygen lance close to the furnace opening during tapping of the converter, spraying oxygen near the furnace opening with the oxygen lance, and continuously discharging molten steel from the tapping opening. Bullion removal method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27702388A JPH02125809A (en) | 1988-11-01 | 1988-11-01 | Method for removing stuck metal at furnace top opening hole in converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27702388A JPH02125809A (en) | 1988-11-01 | 1988-11-01 | Method for removing stuck metal at furnace top opening hole in converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02125809A true JPH02125809A (en) | 1990-05-14 |
Family
ID=17577694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27702388A Pending JPH02125809A (en) | 1988-11-01 | 1988-11-01 | Method for removing stuck metal at furnace top opening hole in converter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02125809A (en) |
-
1988
- 1988-11-01 JP JP27702388A patent/JPH02125809A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE59507244D1 (en) | Method and device for operating a double-vessel arc furnace | |
| JPH02125809A (en) | Method for removing stuck metal at furnace top opening hole in converter | |
| JP2002332513A (en) | Method for removing metal on nose of melting vessel furnace | |
| JP2524083Y2 (en) | Lance for blowing and furnace mouth metal cutting | |
| JPS5930468A (en) | Removing method of clogging in nozzle | |
| JPH08127812A (en) | Method for removing stuck metal on converter | |
| JPS6217112A (en) | Method for coating inner wall of converter with slag | |
| JP2005526906A (en) | Method and apparatus for producing stainless steel, in particular special steels containing chromium or chromium nickel | |
| JP2003253322A (en) | Method for melting stainless steel in electric furnace | |
| JPH11279619A (en) | Method for removing lance deposit for refing molten metal and device therefor | |
| JP2562768B2 (en) | Melting method of molten metal container | |
| JP2554502Y2 (en) | Ladle refining snorkel | |
| JP2912834B2 (en) | Steelmaking method using electric furnace | |
| JPH10219329A (en) | Lance and method for removing stuck metal in furnace using the lance | |
| JPH0578730A (en) | Method for removing metal in vessel in equipment for stirring and refining molten metal | |
| JPS622607B2 (en) | ||
| JPS59185719A (en) | Slag-off method in converter having bottom blowing installation | |
| JP2000096119A (en) | Blow-refining method for restraining sticking of metal in converter type refining furnace | |
| JP2000096122A (en) | Operation method for restraining sticking of metal in refining furnace | |
| JPH11140525A (en) | Converter blowing method restraining deposition of metal of furnace opening hole part and side wall in furnace and lance device for converter | |
| JPS62240709A (en) | Equipment for temperature rising of molten steel in ladle | |
| SU1617002A1 (en) | Method of melting steel in converter | |
| JP3770076B2 (en) | Slag coating method for dedicated dephosphorization furnace | |
| RU2116355C1 (en) | Method of converter charging and device for its embodiment | |
| JP3375528B2 (en) | Recovery and reuse of ingots on converter mouth |