JPH0468364B2 - - Google Patents
Info
- Publication number
- JPH0468364B2 JPH0468364B2 JP59169159A JP16915984A JPH0468364B2 JP H0468364 B2 JPH0468364 B2 JP H0468364B2 JP 59169159 A JP59169159 A JP 59169159A JP 16915984 A JP16915984 A JP 16915984A JP H0468364 B2 JPH0468364 B2 JP H0468364B2
- Authority
- JP
- Japan
- Prior art keywords
- cutting
- converter
- deposits
- cutting blade
- furnace mouth
- 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 - Lifetime
Links
- 238000000034 method Methods 0.000 claims description 14
- 239000002737 fuel gas Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/4693—Skull removal; Cleaning of the converter mouth
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は転炉の傾動力を利用して転炉の傾動時
に炉口付着物を切削除去する方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method of cutting and removing deposits on the furnace mouth when the converter is tilted by using the tilting force of the converter.
転炉炉口付着物を除去する方法として、
実公昭55−24129号公報に開示の如く転炉を
囲繞する固定切削刃を設け転炉の傾動時に転炉
の傾動力を利用して、この固定切削刃で転炉炉
口付着物を切削除去する方法、
特開昭51−110401号公報に開示の如くノズル
から酸素ガスを付着物に吹付けて付着物を溶断
して除去する方法、
とが知られている。
As a method for removing deposits on the converter mouth, as disclosed in Utility Model Publication No. 55-24129, a fixed cutting blade is provided surrounding the converter, and when the converter is tilted, the tilting force of the converter is used to remove the fixed cutting blade. A method of cutting and removing deposits on the converter mouth using a cutting blade, and a method of blowing oxygen gas onto the deposits from a nozzle to melt and remove the deposits as disclosed in JP-A-51-110401. Are known.
〔解決すべき問題点〕
上記(1)の従来方法は転炉炉口付着物の切削除去
抵抗が大きいときには転炉の傾動不能等を生じ適
用できないという欠点があり、上記(2)の従来方法
は炉口付着物溶断時に炉口を損傷することがあ
り、又炉口付着物除去に長時間を要するという欠
点がある。[Problems to be solved] The conventional method (1) above has the disadvantage that it cannot be applied when the resistance to cutting off the deposits on the converter mouth is large, as the converter becomes unable to tilt. However, there are disadvantages in that the furnace mouth may be damaged when melting the deposits on the furnace mouth, and it takes a long time to remove the deposits on the furnace mouth.
前記問題解決のため、本発明は、転炉の傾動力
を利用して炉口付着物を切削除去する方法におい
て、前記切削除去に先立ち炉口付着物を加熱する
工程を具有しているところに特徴がある。
In order to solve the above problem, the present invention provides a method for cutting and removing deposits on the furnace mouth using the tilting force of a converter, which includes a step of heating the deposits on the furnace mouth prior to the cutting and removal. It has characteristics.
以下本発明方法を実施例により詳細に説明す
る。 The method of the present invention will be explained in detail below with reference to Examples.
先づ本発明方法を実施した切削除去装置につい
て簡単に説明する。
First, a cutting and removing device that implements the method of the present invention will be briefly described.
第１図はその切削除去装置の下面図、第２図は
駆動部分を除いた第１図の側面図、第３図検出演
算指令回路図である。 FIG. 1 is a bottom view of the cutting and removing device, FIG. 2 is a side view of FIG. 1 with the driving portion removed, and FIG. 3 is a detection calculation command circuit diagram.
この切削除去装置は、第１，２図に示すよう
に、転炉作業床１の下面に垂設した架台２から垂
下しているガイドローラボツクス３のローラ４に
より柄部５が滑動自在に支持され、かつ該柄部５
の先端に弧状の切削刃６を有するバイト７と、切
削刃６の基台８の下面に固定の加熱ヘツダー９か
ら切削刃６側に延出するノズル１０と前記ヘツダ
ー９と架台の燃料ガス供給連結部１２とを連結す
るフレキシブルチユーブ１３とを有する加熱装置
と、前記バイト７の柄部５に固定のラツク１４と
噛合う平歯車１５と該平歯車１５の支持軸１６に
減速機１７を介し連結している駆動用の油圧モー
ター１８とを有する駆動部分とを具備し、さらに
第３図に示すように、前記油圧モーター１８の正
回転、逆回転、停止を行う三方切換電磁弁１９、
油圧モーターの油圧が所定圧を越えると油を排出
するリリーフ弁２０、及び切削刃６即ちノズル１
０が転炉に向つて前進しているときのノズル１０
の位置を検出する位置検出器２１からの信号と燃
料ガスを噴射すべきノズル１０の位置を設定する
ガス噴射開始位置設定器２２からの信号とを比較
しガス供給パイプ２３に設けた流量調整器２４に
ガス供給開始の信号を出す比較器２５、切削刃６
が炉口付着物を切削除去する切削位置を設定する
切削位置設定器２６からの信号と前記切削刃６の
現在位置検出器２１からの信号とを比較し、切削
刃６を切削位置に停止させる信号を切削刃指令回
路２７に出すと共にノズル１０からの噴射量が所
定量になるように前記流量調節器２４に信号を出
す比較器２８とを有する検出制御装置を具備して
いる。尚２９′は焔検知器で、３０は該焔検知器
からの信号でガス供給を遮断する遮断弁である。 As shown in FIGS. 1 and 2, this cutting/removing device has a handle 5 that is slidably supported by rollers 4 of a guide roller box 3 that hangs down from a pedestal 2 that is suspended below the converter working floor 1. and the handle 5
A cutting tool 7 having an arc-shaped cutting blade 6 at the tip thereof, a nozzle 10 extending toward the cutting blade 6 from a heating header 9 fixed to the lower surface of a base 8 of the cutting blade 6, and a fuel gas supply for the header 9 and the mount. A heating device having a flexible tube 13 that connects the connecting portion 12, a spur gear 15 that meshes with the rack 14 fixed to the handle 5 of the cutting tool 7, and a reducer 17 connected to the support shaft 16 of the spur gear 15. As shown in FIG. 3, a three-way switching solenoid valve 19 for rotating the hydraulic motor 18 in the forward direction, in the reverse direction, and stopping the hydraulic motor 18, as shown in FIG.
A relief valve 20 that discharges oil when the oil pressure of the hydraulic motor exceeds a predetermined pressure, and a cutting blade 6, that is, a nozzle 1
Nozzle 10 when 0 is advancing towards the converter
A flow rate regulator installed in the gas supply pipe 23 compares a signal from a position detector 21 that detects the position of the fuel gas with a signal from a gas injection start position setting device 22 that sets the position of the nozzle 10 to inject fuel gas. 24, a comparator 25 that sends a signal to start gas supply, and a cutting blade 6
compares the signal from the cutting position setter 26 which sets the cutting position for removing the deposits at the furnace mouth with the signal from the current position detector 21 of the cutting blade 6, and stops the cutting blade 6 at the cutting position. It is equipped with a detection control device having a comparator 28 which outputs a signal to the cutting blade command circuit 27 and also outputs a signal to the flow rate regulator 24 so that the amount of injection from the nozzle 10 becomes a predetermined amount. Note that 29' is a flame detector, and 30 is a cutoff valve that shuts off the gas supply in response to a signal from the flame detector.
上記の切削除去装置は次のように作動する。 The cutting and removing device described above operates as follows.
第４図に示すように転炉Ａが炉口Ｂを真下にし
た排滓位置から矢印Ｗ方向に傾動している間に油
圧モーターを駆動して切削刃６を転炉Ａ方向へ前
進させ、炉口付着物Ｃの性状、堆積高さ等により
ガス噴射開始位置設定器２２から出された該位置
ｘに達したことを位置検出器２１からの信号に基
づき比較器２５で比較し検知し、流量調整器２４
を開いてノズル１０から燃料ガスを噴射し着火す
る。この時炉口付着物Ｃの転炉傾動前側は、この
着火した焔により加熱されるけれども、切削刃に
当接するまでにはなつてない。 As shown in FIG. 4, while the converter A is tilted in the direction of arrow W from the slag discharge position with the furnace mouth B directly below, the hydraulic motor is driven to advance the cutting blade 6 in the direction of the converter A. A comparator 25 compares and detects based on the signal from the position detector 21 that the position x outputted from the gas injection start position setter 22 has been reached based on the properties of the furnace mouth deposits C, the height of accumulation, etc. Flow rate regulator 24
is opened and fuel gas is injected from the nozzle 10 and ignited. At this time, the front side of the converter inclination of the deposit C at the furnace mouth is heated by the ignited flame, but it has not reached the point where it comes into contact with the cutting blade.
切削刃６、ノズル１０は引続いて前進し、一方
転炉もＷ方向に傾動している。そして切削刃が所
定切削位置ｙに達したことを、切削位置設定器２
６からの信号と前記位置検出器２１から信号とを
比較器２８で検知し、これを指令回路２７に入れ
て三方切換弁１９を切替えて切削刃６、ノズル１
０の進行を停止すると共に、流量整節器２４をさ
らに開いて燃料ガス供給量を増す。このとき炉口
付着物Ｃ（第４図）の傾動前側端が切削刃６に接
し切削が開始される。 The cutting blade 6 and nozzle 10 continue to move forward, while the converter is also tilted in the W direction. Then, the cutting position setter 2 indicates that the cutting blade has reached the predetermined cutting position y.
6 and the signal from the position detector 21 are detected by the comparator 28, and the signals are input to the command circuit 27 and the three-way switching valve 19 is switched to switch the cutting blade 6 and nozzle 1.
0 is stopped, and the flow regulator 24 is further opened to increase the amount of fuel gas supplied. At this time, the tilting front end of the furnace mouth deposit C (FIG. 4) comes into contact with the cutting blade 6, and cutting is started.
炉口付着物Ｃは切削刃で切削される前にノズル
１０から焔により加熱されて軟化した状態にな
り、その軟化した状態の付着物を切削刃で切削除
去することになる。 Before being cut by the cutting blade, the furnace mouth deposits C are heated by flame from the nozzle 10 and become softened, and the softened deposits are removed by cutting with the cutting blade.
１図の切削除去で切削除去できる付着物の厚さ
は加熱しない場合に比べて大巾に増加し、かつ切
削面は平坦度が向上している。 The thickness of deposits that can be removed by cutting and removing as shown in FIG. 1 is greatly increased compared to the case without heating, and the flatness of the cut surface is improved.
上記の実施例の方法により切削除去したときの
一回の切削厚さと平坦度への例を、加熱しないで
切削除去をしたときのそれを第５図に示す。本実
施例方法による切削厚さは、加熱しないときの約
２倍であり、平坦度も極めて良好であることを第
４図は示している。 FIG. 5 shows an example of the thickness and flatness of one cut when the method of the above embodiment is used to remove the material by cutting without heating. FIG. 4 shows that the cutting thickness obtained by the method of this embodiment is approximately twice that of the case without heating, and the flatness is also extremely good.
本発明によれば、切削除去に先立ち炉口付着物
を加熱するので、炉口付着物の切削抵抗が減じ、
加熱しないときには傾動不能になる切削厚さであ
つても転炉は傾動不能にならずに切削でき、しか
も切削面の平坦度は向上する。又従来の溶断除去
方法に比べると付着物除去に要する時間が大巾に
短縮でき、炉口損傷を生じることもないという諸
効果を奏する。
According to the present invention, since the furnace mouth deposits are heated prior to cutting and removal, the cutting resistance of the furnace mouth deposits is reduced.
Even if the cutting thickness is such that the converter cannot tilt when not heated, the converter can cut without becoming tiltable, and the flatness of the cut surface is improved. Moreover, compared to the conventional fusing removal method, the time required for removing deposits can be greatly shortened, and the furnace mouth is not damaged.
上記実施例適用の装置によれば、本発明方法を
自動的に実施でき又焔が仮に消えてもこれを検知
し燃料ガスの供給を停止するので安全に作業がで
きる利点がある。 According to the apparatus to which the above embodiment is applied, the method of the present invention can be carried out automatically, and even if the flame goes out, this is detected and the supply of fuel gas is stopped, so there is an advantage that work can be carried out safely.
第１図は実施例に用いた切削除去を装置の下面
図、第２図は駆動部分を除いた第１図の側面図、
第３図は検出演算指令回路図、第４図は転炉の傾
動と切削刃、ノズルの前進位置を示す説明図、第
５図は本発明方法の切削厚さと平坦度を従来方法
のそれらとを示す図である。
Ａ……転炉、Ｂ……炉口、Ｃ……付着物、６…
…切削刃、１０……ノズル。
Fig. 1 is a bottom view of the cutting and removal device used in the example, Fig. 2 is a side view of Fig. 1 excluding the driving part,
Fig. 3 is a detection calculation command circuit diagram, Fig. 4 is an explanatory diagram showing the tilting of the converter, the cutting blade, and the forward position of the nozzle, and Fig. 5 shows the cutting thickness and flatness of the method of the present invention compared to those of the conventional method. FIG. A... Converter, B... Furnace mouth, C... Deposits, 6...
...Cutting blade, 10...Nozzle.
Claims (1)
去する方法において、 前記切削除去に先立ち炉口付着物を加熱するこ
とを特徴とする転炉炉口付着物加熱切削除去方
法。[Claims] 1. A method for cutting and removing deposits on the furnace mouth using the tilting force of a converter, characterized in that the deposits on the furnace mouth are heated prior to the cutting and removal. Heat cutting removal method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16915984A JPS6148509A (en) | 1984-08-13 | 1984-08-13 | Method for removing deposit on throat of converter by heating and cutting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16915984A JPS6148509A (en) | 1984-08-13 | 1984-08-13 | Method for removing deposit on throat of converter by heating and cutting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6148509A JPS6148509A (en) | 1986-03-10 |
| JPH0468364B2 true JPH0468364B2 (en) | 1992-11-02 |
Family
ID=15881369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16915984A Granted JPS6148509A (en) | 1984-08-13 | 1984-08-13 | Method for removing deposit on throat of converter by heating and cutting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6148509A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2390247A1 (en) | 2010-05-26 | 2011-11-30 | Netherlands Organisation for Scientific Research (Advanced Chemical Technologies for Sustainability) | Preparation of caprolactone, caprolactam, 2,5-tetrahydrofuran dimethanol, 1,6-hexanediol or 1,2,6-hexanetriol from 5-hydroxymethyl-2-furfuraldehyde |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51110401A (en) * | 1975-03-25 | 1976-09-30 | Nippon Steel Corp | TENROROGUCHIFUCHAKUBUTSUNO JOKYOHOHO |
| JPS5524129U (en) * | 1978-08-03 | 1980-02-16 | ||
| JPS60197805A (en) * | 1984-03-22 | 1985-10-07 | Nippon Steel Corp | Method for controlling pressure in converter of converter waste gas treating device |
-
1984
- 1984-08-13 JP JP16915984A patent/JPS6148509A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51110401A (en) * | 1975-03-25 | 1976-09-30 | Nippon Steel Corp | TENROROGUCHIFUCHAKUBUTSUNO JOKYOHOHO |
| JPS5524129U (en) * | 1978-08-03 | 1980-02-16 | ||
| JPS60197805A (en) * | 1984-03-22 | 1985-10-07 | Nippon Steel Corp | Method for controlling pressure in converter of converter waste gas treating device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6148509A (en) | 1986-03-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |