JPH0266110A - Device for plugging molten metal tapping hole at furnace bottom in molten metal refining furnace - Google Patents
Device for plugging molten metal tapping hole at furnace bottom in molten metal refining furnaceInfo
- Publication number
- JPH0266110A JPH0266110A JP21376088A JP21376088A JPH0266110A JP H0266110 A JPH0266110 A JP H0266110A JP 21376088 A JP21376088 A JP 21376088A JP 21376088 A JP21376088 A JP 21376088A JP H0266110 A JPH0266110 A JP H0266110A
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- furnace
- sandy
- tapping hole
- outlet
- 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
- 239000002184 metal Substances 0.000 title claims abstract description 18
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 18
- 238000010079 rubber tapping Methods 0.000 title abstract description 9
- 238000007670 refining Methods 0.000 title abstract description 4
- 238000007664 blowing Methods 0.000 claims abstract description 31
- 230000000149 penetrating effect Effects 0.000 claims abstract 2
- 238000003723 Smelting Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 abstract description 7
- 238000007599 discharging Methods 0.000 abstract 3
- 229910000831 Steel Inorganic materials 0.000 description 10
- 239000000945 filler Substances 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 239000011449 brick Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は炉底に向けて吊り下げた吹錬用上吹ランスを備
えると共に炉底の出湯口に開閉自在な開閉ゲートを備え
た溶融金属精錬炉の炉底出湯口閉塞装置に関するもので
ある。[Detailed Description of the Invention] <Industrial Application Field> The present invention provides a molten metal molten metal which is equipped with a top-blowing lance for blowing suspended toward the bottom of the furnace, and a gate that can be opened and closed at the outlet of the bottom of the furnace. This invention relates to a device for closing the bottom outlet of a refining furnace.
〈従来の技術〉
例えば転炉にて吹錬した溶鋼を取鍋に出鋼する場合、転
炉の炉体上部に設けた出湯口から炉体を傾動して出鋼す
る方式が採用されているが、この方式には下記の問題点
があった。<Conventional technology> For example, when molten steel blown in a converter is tapped into a ladle, a method is adopted in which the furnace body is tilted and tapped from a tap hole provided at the top of the converter body. However, this method had the following problems.
（１）出鋼の際の炉体傾動により炉底の高温溶鋼が炉壁
れんがの表面に接触しつつ炉体上部の出湯口近傍まで移
動するので溶鋼の温度降下が大きい。(1) Due to the tilting of the furnace body during tapping, the high-temperature molten steel at the bottom of the furnace comes into contact with the surface of the furnace wall bricks and moves to the vicinity of the tap opening at the top of the furnace body, resulting in a large temperature drop in the molten steel.
（２）炉体の炉壁れんがの上部まで溶鋼が接触するので
溶鋼の接触する領域を水冷化して壁面れんがの寿命を延
長させる手段を採ることが不可能であり、耐火物原単位
を削減することが困難である。(2) Since the molten steel comes into contact with the upper part of the furnace wall bricks in the furnace body, it is impossible to water-cool the area where the molten steel comes in contact to extend the life of the wall bricks, which reduces the refractory unit consumption. It is difficult to do so.
（３）炉体を傾動して出鋼する際、転炉内の溶鋼面上に
浮遊しているスラグが出湯口から流出し易くスラグカッ
トが難しい。(3) When tapping steel by tilting the furnace body, slag floating on the molten steel surface in the converter tends to flow out from the tap opening, making it difficult to cut the slag.
上記問題点を解決するため出鋼を炉体を傾動して行うの
ではなく直立させたまま炉底に設けた出湯口から出鋼す
る手段が知られている。In order to solve the above-mentioned problems, a method is known in which the steel is tapped from a tap hole provided at the bottom of the furnace while the furnace body is kept upright, rather than by tilting the furnace body.
すなわち特開昭５８−８１９１０号公報には、転炉また
は電気炉の炉底に設けた出湯口にスライディング式開閉
ゲートを備えたものが開示されており、また特開昭６２
−６３６１３号公報には転炉、ＡＯＤ炉の炉底に設けた
出湯口に開閉ゲートを設け、この開閉ゲートで閉止した
出湯口内に砂状詰物を装填して閉塞するものが開示され
ている。That is, Japanese Patent Application Laid-Open No. 58-81910 discloses a converter or electric furnace in which a sliding opening/closing gate is provided at the outlet provided at the bottom of the furnace.
Publication No. 63613 discloses a converter or an AOD furnace in which an opening/closing gate is provided at the tap hole provided at the bottom of the furnace, and sand-like filler is loaded into the tap hole which is closed by the opening/closing gate to block it. .
〈発明が解決しようとする課題〉
上記のように炉底に開閉ゲートを備えた出湯口を有する
転炉、′Ｎ、気炉等の溶融金属精錬炉のおいては出湯口
に砂状詰物を精錬の度毎に装填する必要があるが、前記
公報にはその装填手段については提案されていない。<Problems to be Solved by the Invention> As mentioned above, in a molten metal smelting furnace such as a converter, 'N, or air furnace, which has a tap with an opening/closing gate at the bottom of the furnace, it is difficult to fill the tap with sandy fillers. Although it is necessary to load the metal every time refining is carried out, the above-mentioned publication does not propose a loading means.
−ａに転炉は１００〜２００Ｔの溶鋼を吹錬するため大
型であり、その内容積が大きく出湯口への砂状詰物の装
填装置は大がかりとなるが、通常の許容時間である５〜
１０分間で砂状詰物を装填するのは困難を極める。-a The converter is large because it blows 100 to 200 T of molten steel, and its internal volume is large, requiring a large-scale device to load the sandy filler into the outlet, but the normal allowable time is 5 to 200 tons.
It is extremely difficult to load sandy filling in 10 minutes.
それというのも、例えば２００Ｔ転炉では炉底の厚みが
１５００ｍｍ、出湯口径が３００１ＷｌΦであるので砂
状詰物の比重を３とすれば砂状詰物の重量は３００ｋｇ
にもなり、転炉の炉口からの深さが１０ｍにも及ぶ炉底
に設けられた３００ＭΦ径の出湯口に吹錬の都度すなわ
ち１回／１時間の頻度で毎回３００ｋｇ以上の砂状詰物
を２〜３分といった短時間で迅速に装填するするには多
くの問題点が生じ、従来適切な手段が無かった。This is because, for example, in a 200T converter, the thickness of the bottom of the furnace is 1500 mm and the tap diameter is 3001 WlΦ, so if the specific gravity of the sandy filling is 3, the weight of the sandy filling is 300 kg.
At the same time, more than 300 kg of sandy filling is deposited into the 300 MΦ diameter tap hole installed at the bottom of the converter, which is 10 m deep from the furnace mouth, every time blowing is performed, that is, once per hour. Many problems arise in quickly loading the battery in a short period of 2 to 3 minutes, and there has been no suitable means to date.
本発明はこのような実状に鑑みてなされたものであり、
簡単な装置により迅速に炉底の出湯口に砂状詰物を装填
することができる溶融金属精錬炉の炉底出湯口閉塞装置
を提供することを目的とするものである。The present invention has been made in view of these circumstances,
It is an object of the present invention to provide a furnace bottom outlet closing device for a molten metal smelting furnace that can quickly load sandy filler into the furnace bottom outlet using a simple device.
く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は、炉底に向けて吊り
下げた吹錬用上吹ランスを備えると共に炉底の出湯口を
閉止する開閉ゲートを備えた溶融金属精錬炉において、
上記吹錬用上吹ランスには中心部を上下に貫通する砂状
詰物供給用パイプを設けるー・方、上記精錬炉の上方に
は出湯口内に装填する砂状詰物収納用ホッパを設置し、
上記ホ・ンパの下部に配設した砂状詰物切出装置の出口
部と上記吹錬用ランスの砂状詰物供給用パイプの上端部
とを砂状詰物供給用フレキシブルホースで連結し、上記
開閉ゲートで閉止した出湯口内に砂状詰物を装填するよ
うに構成したものである。Means for Solving the Problems> To achieve the above object, the present invention includes a top blowing lance for blowing suspended toward the bottom of the furnace, and an opening/closing gate for closing the outlet at the bottom of the furnace. In a molten metal smelting furnace,
The top blowing lance for blowing is provided with a pipe for supplying sandy filling that passes vertically through the center, and a hopper for storing sandy filling to be loaded into the outlet is installed above the smelting furnace. ,
The outlet of the sandy filling cutting device disposed at the lower part of the punch is connected to the upper end of the sandy filling supply pipe of the blowing lance with a flexible hose for supplying sandy filling, and the above opening/closing is performed. The structure is such that sand-like filling is loaded into a tap hole that is closed with a gate.
く作 用〉
本発明では上記手段により、精錬炉の上方に設置したホ
ッパから砂状詰物を切出装置により切出し、フレキシブ
ルホースを介して、吹錬用上吹ランスの中心部を上下に
貫通する砂状詰物供給用パイプに導き、上記パイプの先
端から直接炉底の出湯口内に装填するので迅速かつ確実
に出湯口を砂状詰物で閉塞することができる。Function> In the present invention, by the above means, the sand-like filling is cut out from the hopper installed above the smelting furnace by a cutting device, and is passed vertically through the center of the top blowing lance for blowing via a flexible hose. Since the sandy filling is introduced into the pipe for supplying the sandy filling and is directly loaded into the outlet at the bottom of the furnace from the tip of the pipe, the outlet can be quickly and reliably blocked with the sandy filling.
〈実施例〉 以下本発明の実施例を図面に従って説明する。<Example> Embodiments of the present invention will be described below with reference to the drawings.
第１図に示すように鉄皮１および内張耐火物２から主と
して構成される転炉炉体１０の内部には酸素供給路６ａ
および冷却水通路６ｂを有する吹錬用上吹ランス６が吊
り下げられており、炉底１１の中央部には出湯口１２が
設けである。９は酸素供給路６ａに連結した酸素供給管
であり、１７ａおよび１７ｂは冷却水通路６ｂに連結さ
れた給、排水管である。As shown in FIG. 1, a converter body 10 mainly composed of an iron shell 1 and a refractory lining 2 has an oxygen supply passage 6a inside.
A top blowing lance 6 for blowing having a cooling water passage 6b is suspended, and a tapping port 12 is provided in the center of the hearth bottom 11. 9 is an oxygen supply pipe connected to the oxygen supply path 6a, and 17a and 17b are supply and drain pipes connected to the cooling water path 6b.
吹錬用上吹ランス６の中央部には上下に貫通ずる砂状詰
物供給用パイプ７が設けてあり、また炉体１０の上方に
は砂状詰物５を収納したホッパ８が設置されている。A pipe 7 for supplying sandy filling material passing through the top and bottom blowing lances 6 is provided in the center of the top blowing lance 6, and a hopper 8 containing sandy filling material 5 is installed above the furnace body 10. .
ホッパ８の下部には切出装置１３が設けてあり、切出装
置１３の出口部と吹錬用上吹ランス６の中央部を貫通す
るパイプ７の上端部とは吹錬用上吹ランス６が上下動す
るのでフレキシブルホース１４で連結されている。１５
はフレキシブルホースの両端部に設けた連結用フランジ
である。A cutting device 13 is provided at the bottom of the hopper 8, and the upper end of the pipe 7 passing through the outlet of the cutting device 13 and the center of the top blowing lance 6 for blowing is connected to the top blowing lance 6 for blowing. Because it moves up and down, it is connected with a flexible hose 14. 15
are connecting flanges provided at both ends of the flexible hose.
炉底１１に設けた出湯口１２の下部には開閉ゲート３が
設けてあり、開閉ゲート３は炉底鉄皮に取付けたリンク
４および駆動シリンダ１６によって開閉可能になってい
る。An opening/closing gate 3 is provided below a tap hole 12 provided in the furnace bottom 11, and the opening/closing gate 3 can be opened and closed by a link 4 attached to the furnace bottom shell and a drive cylinder 16.
なお第１図においては、砂状詰物を収納するホッパを１
基設けるものについて説明したが、溶湯と接触する出湯
口１２の上部には焼結し難い珪砂等の砂状詰物を、また
下部には焼結し易いマグネシャクリンカやクロマイトサ
ンド等を装填するなど性状の異なる砂状詰物を使い分け
る等の必要がある場合には複数基設けて、各ホッパから
性状の異なる砂状詰物を、切出しフレキシブルホースを
介して砂状詰物供給用パイプを供給するようにすること
もできる。In addition, in Figure 1, the hopper that stores the sand-like filling is shown as 1.
As described above, the upper part of the outlet 12 that comes into contact with the molten metal is filled with sand-like filling such as silica sand, which is difficult to sinter, and the lower part is filled with magne sha clinker, chromite sand, etc., which is easy to sinter. If it is necessary to use sandy fillers with different properties, multiple hoppers may be provided, and sandy fillers with different properties may be fed from each hopper to a sandy filler supply pipe via a cut-out flexible hose. You can also do that.
また切出装置１３の出口部と砂状詰物供給用バイブロの
上端部とを連結するフレキシブルホース１４の傾斜角度
は、吹錬用上吹ランス６を炉内に吊り下げた状態におい
て砂状詰物５が滞留することなく流れ落ちる角度であれ
ばよく、場合によっては垂直にしてもよい。Further, the inclination angle of the flexible hose 14 connecting the outlet of the cutting device 13 and the upper end of the vibro for supplying sandy filling is such that when the top blowing lance 6 for blowing is suspended in the furnace, the sandy filling 5 is The angle may be any angle that allows water to flow down without stagnation, and may be vertical in some cases.
第１図において、砂状詰物５を出湯口１２に装填するに
際し、出湯口１２は、シリンダ１６の作動によりリンク
４を介して開閉ゲート３で閉止状態にしである。In FIG. 1, when the sand-like filling 5 is loaded into the tap 12, the tap 12 is closed by the opening/closing gate 3 via the link 4 by the operation of the cylinder 16.
ホッパ８内の砂状詰物５はロータリ式切出装置１３の駆
動により切出され、フレキシブルホース１４を介して吹
錬用上吹ランス６の中心部を上下に貫通する砂状詰物供
給用パイプ７に導かれ、パイプ７の先端から出湯口１２
が一杯になるまで供給される。The sandy filling 5 in the hopper 8 is cut out by the drive of a rotary cutting device 13, and a sandy filling supply pipe 7 vertically passes through the center of the top blowing lance 6 via a flexible hose 14. from the tip of the pipe 7 to the outlet 12.
will be supplied until it is full.
砂状詰物供給用パイプ７は出湯口１２の真上に位置して
いるので砂状詰物５は出湯口１２に確実に供給すること
ができ、かつ切出装置１３の切出し量を調節することに
より迅速に供給することができる。Since the sandy filler supply pipe 7 is located directly above the outlet 12, the sandy filler 5 can be reliably supplied to the outlet 12, and by adjusting the cutting amount of the cutting device 13. Can be supplied quickly.
〈発明の効果〉
以上説明したように本発明の装置によれば炉上に設けた
ホッパに収納した砂状詰物を切出装置の切出量を調節し
て切出し、炉内に吊り下げた吹錬用上吹ランスの中心部
に設けた砂状詰物供給用パイプを通して炉底の出湯口に
供給するので迅速かつ確実に装填して閉塞することが可
能になり、これによって転炉の炉底出鋼システムが有効
に達成される。<Effects of the Invention> As explained above, according to the apparatus of the present invention, the sand-like filling stored in the hopper provided on the furnace is cut out by adjusting the cutting amount of the cutting device, and the blower suspended in the furnace is cut out. Since the sandy filler is supplied to the outlet at the bottom of the furnace through a pipe installed in the center of the top blowing lance, it is possible to quickly and reliably load and close the outlet. steel system is effectively achieved.
第１図は本発明の実施例を示す縦断面図である。
１・・・鉄皮、 ２・・・内張耐火物、３・・
・開閉ゲート、 ４・・・リンク、５・・・砂状詰
物、 ６・・・吹錬用ランス、７・・・砂状詰物
供給用パイプ、
８・・・ホッパ、 ９・・・酸素供給管、１０・
・・転炉炉体、 １１・・・炉底、１２・・・出湯
口、 １３・・・切出装置、１４・・・フレキシ
ブルホース、
１５・・・連結用フランジ、１６・・・駆動シリンダ。
第１図FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention. 1... Iron skin, 2... Lining refractory, 3...
・Opening/closing gate, 4...Link, 5...Sandy filling, 6...Blowing lance, 7...Sandy filling supply pipe, 8...Hopper, 9...Oxygen supply tube, 10・
...Converter furnace body, 11... Hearth bottom, 12... Tap port, 13... Cutting device, 14... Flexible hose, 15... Connection flange, 16... Drive cylinder . Figure 1
Claims (1)
に炉底の出湯口を閉止する開閉ゲートを備えた溶融金属
精錬炉において、上記吹錬用上吹ランスには中心部を上
下に貫通する砂状詰物供給用パイプを設ける一方、上記
精錬炉の上方には出湯口内に装填する砂状詰物収納用ホ
ッパを設置し、上記ホッパの下部に配設した砂状詰物切
出装置の出口部と上記吹錬用ランスの砂状詰物供給用パ
イプの上端部とを砂状詰物供給用フレキシブルホースで
連結し、上記開閉ゲートで閉止した出湯口内に砂状詰物
を装填するように構成した溶融金属精錬炉の炉底出湯口
閉塞装置。In a molten metal smelting furnace equipped with a top blowing lance for blowing suspended toward the bottom of the furnace and an opening/closing gate for closing the tap outlet at the bottom of the furnace, the top blowing lance for blowing has a center part vertically extending upward and downward. A penetrating pipe for supplying sandy fillings is provided, while a hopper for storing sandy fillings to be loaded into the outlet is installed above the smelting furnace, and a sandy filling cutting device disposed below the hopper is installed. The outlet portion and the upper end of the sandy filling supply pipe of the blowing lance are connected by a sandy filling supply flexible hose, and the sandy filling is loaded into the outlet closed by the opening/closing gate. A device for closing the bottom outlet of a molten metal smelting furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21376088A JPH0266110A (en) | 1988-08-30 | 1988-08-30 | Device for plugging molten metal tapping hole at furnace bottom in molten metal refining furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21376088A JPH0266110A (en) | 1988-08-30 | 1988-08-30 | Device for plugging molten metal tapping hole at furnace bottom in molten metal refining furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0266110A true JPH0266110A (en) | 1990-03-06 |
Family
ID=16644573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21376088A Pending JPH0266110A (en) | 1988-08-30 | 1988-08-30 | Device for plugging molten metal tapping hole at furnace bottom in molten metal refining furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0266110A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0559196U (en) * | 1992-01-14 | 1993-08-06 | 川崎重工業株式会社 | Furnace bottom tapping device |
-
1988
- 1988-08-30 JP JP21376088A patent/JPH0266110A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0559196U (en) * | 1992-01-14 | 1993-08-06 | 川崎重工業株式会社 | Furnace bottom tapping device |
| JP2515541Y2 (en) * | 1992-01-14 | 1996-10-30 | 川崎重工業株式会社 | Furnace bottom tapping device |
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