JPH0192309A - Opening/closing device in molten metal vessel - Google Patents
Opening/closing device in molten metal vesselInfo
- Publication number
- JPH0192309A JPH0192309A JP24955587A JP24955587A JPH0192309A JP H0192309 A JPH0192309 A JP H0192309A JP 24955587 A JP24955587 A JP 24955587A JP 24955587 A JP24955587 A JP 24955587A JP H0192309 A JPH0192309 A JP H0192309A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- molten metal
- valve body
- molten steel
- valve
- 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 39
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 39
- 239000011148 porous material Substances 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000011819 refractory material Substances 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 48
- 229910000831 Steel Inorganic materials 0.000 abstract description 44
- 239000010959 steel Substances 0.000 abstract description 44
- 238000010079 rubber tapping Methods 0.000 abstract description 34
- 239000002893 slag Substances 0.000 abstract description 14
- 238000007664 blowing Methods 0.000 abstract description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract 9
- 229910052757 nitrogen Inorganic materials 0.000 abstract 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000012530 fluid Substances 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
- 239000000203 mixture Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/14—Closures
- B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
- B22D41/42—Features relating to gas injection
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- 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］
この発明は、転炉又は取鍋等の溶湯容器に収容された溶
湯を出湯する溶湯容器の開閉装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a molten metal container opening/closing device for tapping molten metal contained in a molten metal container such as a converter or a ladle.
［従来の技術］
例えば、転炉吹錬においては、転炉内の溶鋼が所定成分
及び温度に至ると、吹錬を終了し、転炉全体を徐々に傾
動させつつ炉上部側壁の出鋼口を介して取鍋へ溶鋼を出
鋼する。出鋼にあたっては、溶鋼のみが流出するように
してスラグの流出を極力阻止し、取鍋内へのスラグ混入
を防止する。また、適宜の手段により出鋼口近傍を外気
から遮断して出鋼溶鋼の酸化を防止する。[Prior Art] For example, in converter blowing, when the molten steel in the converter reaches a predetermined composition and temperature, the blowing ends, and the entire converter is gradually tilted while the tapping port on the upper side wall of the furnace is opened. The molten steel is tapped into the ladle through the . When tapping, only molten steel flows out to prevent slag from flowing out as much as possible, thereby preventing slag from entering the ladle. In addition, the vicinity of the tapping port is isolated from the outside air by appropriate means to prevent oxidation of the tapped molten steel.
従来の出鋼技術においては、炉体容量に比較して小径の
出鋼口を形成し、スラグが溶鋼と共に流出し難いように
している。出鋼を停止する場合は、傾動した転炉を正立
状態に戻し、スラグを炉内に残留させる。In conventional steel tapping technology, a tapping port is formed that has a small diameter compared to the capacity of the furnace body to prevent slag from flowing out together with molten steel. When tapping is to be stopped, the tilted converter is returned to an upright position and the slag remains in the furnace.
また、転炉を正立状態に戻さない場合は、所定最の溶鋼
を出鋼したところで、作業者又は適宜の装置により出鋼
口に栓をし、出鋼口を塞ぐ。In addition, if the converter is not returned to the upright position, after a predetermined amount of molten steel has been tapped, the tap port is plugged by an operator or an appropriate device to block the tap port.
［発明が解決しようとする問題点］
しかしながら、従来の出鋼技術においては、傾動した転
炉を迅速に立て直すことができず、スラグが流出するこ
とがある。[Problems to be Solved by the Invention] However, in conventional steel tapping techniques, it is not possible to quickly rebuild a tilted converter, and slag may flow out.
一方、出鋼口に栓をする技術では、溶鋼流出中の出鋼口
に直接栓をするので、作業の安全性及び操作性が劣悪で
あり、作業中に外気に接触して出鋼溶鋼が酸化してしま
う。また、栓に使用される部材は、凝固金属及びスラグ
が付着しているので、繰返し使用することができず、１
回限りで廃棄される。更に、出鋼路内にて溶鋼が凝固し
、出鋼口がノズル詰まりを起すという問題点がある。On the other hand, with the technology of plugging the tap hole, the tap hole is directly plugged while the molten steel is flowing out, so the safety and operability of the work are poor, and the molten steel comes into contact with the outside air during work. It will oxidize. In addition, the members used for the stopper have solidified metal and slag attached to them, so they cannot be used repeatedly.
It will be discarded once. Furthermore, there is a problem in that the molten steel solidifies in the tap path, causing the tap port to become clogged.
この発明はかかる事情に鑑みてなされたものであって、
ノズル詰まりを生じることなく、安全かつ確実にスラグ
流出を停止することができ、繰返し使用することができ
る溶鋼容器の開閉装置を提供することを目的とする。This invention was made in view of such circumstances, and
It is an object of the present invention to provide an opening/closing device for a molten steel container that can safely and reliably stop the outflow of slag without causing nozzle clogging and can be used repeatedly.
［問題点を解決するための手段］
この発明に係る溶湯容器の開閉装置は、ガス吹込み用の
多数の細孔と共に溶湯通流路が形成され、溶湯容器の出
湯路を遮るために設けられた耐火物からなる弁体と、こ
の弁体を摺動可能に保持する耐火物からなる弁箱と、出
湯路を遮る出湯停止位置と出湯路を弁体の溶湯通流路に
連通させて開放する出湯位置との間で弁体を摺動させる
摺動手段と、溶湯停止位置にて出湯路内にガスを吹込む
ために弁体の細孔にガスを供給するガス供給手段と、を
有することを特徴とする。この場合に前記弁体の溶湯通
流路は、流入側よりも流出側が広くなるように形成され
ていることが好ましい。[Means for Solving the Problems] The opening/closing device for a molten metal container according to the present invention has a molten metal flow path formed together with a large number of pores for blowing gas, and is provided to block the outlet path of the molten metal container. A valve body made of a refractory material, a valve body made of a refractory material that slidably holds the valve body, a tap stop position that blocks the hot water tap path, and a hot water tap path that is opened by communicating with the molten metal flow path of the valve body. and a gas supply means for supplying gas to the pores of the valve body in order to blow gas into the tap path at the molten metal stop position. Features. In this case, the molten metal flow path of the valve body is preferably formed so that the outflow side is wider than the inflow side.
［作用］
この発明に係る溶湯容器の開閉装置においては、容器内
の溶湯を出湯する場合は、弁体を摺動手段によりスライ
ドさせ、弁体の溶湯通流路を容器の出湯路に合致させる
。一方、出湯を停止する場合は、弁体を摺動手段により
スライドさせて出湯路を弁体で遮ると共に、ガス供給手
段により弁体の細孔にガスを供給し、出湯停止時の出湯
路内にガスを吹込む。このため、出湯路内の溶鋼がガス
により撹拌されて出湯路の内壁に溶湯が凝固付着しなく
なる。更に、弁体の溶湯通流路が流入側よりも流出側の
ほうが広くなっているので、溶湯の放出が容易になり、
通流路の内壁に溶湯が付着凝固することが阻止される。[Function] In the opening/closing device for a molten metal container according to the present invention, when tapping the molten metal in the container, the valve body is slid by the sliding means so that the molten metal flow path of the valve body matches the tap path of the container. . On the other hand, when stopping the hot water tap, the valve body is slid by the sliding means to block the hot water tap path with the valve body, and at the same time, gas is supplied to the pores of the valve body by the gas supply means, and the hot water tap path is closed when the hot water tap is stopped. Inject gas into. Therefore, the molten steel in the tapping path is agitated by the gas, and the molten metal does not solidify and adhere to the inner wall of the tapping path. Furthermore, the molten metal flow path of the valve body is wider on the outflow side than on the inflow side, making it easier to release the molten metal.
Molten metal is prevented from adhering to and solidifying on the inner wall of the flow path.
［実施例］
近時、複合吹錬用転炉において撹拌ガスによる底吹き技
術が急速に発達し、ノズル詰まりを生じることなく、底
吹きガス量を広範囲に亘って制御することができるマル
チホールプラグく以下、ＭＨＰという）が開発されてい
る。ＭＨＰは、非多孔質の耐火物でつくられ、この耐火
物中に多数の細孔が形成されており、これらの細孔にガ
ス溜めからガスを供給するように構成されている。[Example] Recently, bottom blowing technology using stirred gas has developed rapidly in converters for complex blowing, and a multi-hole plug has been developed that can control the amount of bottom blowing gas over a wide range without clogging the nozzle. (hereinafter referred to as MHP) has been developed. The MHP is made of a non-porous refractory material, and has a large number of pores formed in the refractory material, and is configured to supply gas from a gas reservoir to these pores.
ＭＨＰのガス溜めは圧力箱として機能するので、ガス溜
めから多数の細孔にガスを分配することができる。従っ
て、細孔の毛細管現象により溶鋼の逆流を阻止すると共
に、少量のガスを吹込むことを可能にした点にＭＨＰの
特徴がある。Since the gas reservoir of the MHP functions as a pressure box, gas can be distributed from the gas reservoir to a large number of pores. Therefore, the characteristics of MHP are that it prevents the backflow of molten steel by the capillary phenomenon of the pores, and also makes it possible to blow a small amount of gas into the molten steel.
発明者等は、かかるＭＨＰ技術に看目し、出鋼停止部材
にＭＨＰ技術を応用する実験を繰返した結果、出鋼口の
ノズル詰まり防止に有効であることを見出だした。The inventors took notice of this MHP technology and repeated experiments applying the MHP technology to a tapping stop member, and found that it is effective in preventing nozzle clogging of the tapping port.
以下、添付の図面を参照してこの発明の実施例について
具体的に説明する。Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
第１図はこの発明の実施例に係る溶湯容器の開閉装置を
示す縦断面図、第２図は同じく溶湯容器の開閉装置の一
部を切り欠いて示す横断面図、第３図は出鋼時の転炉及
び取鍋を示す模式図である。FIG. 1 is a longitudinal sectional view showing a molten metal container opening/closing device according to an embodiment of the present invention, FIG. 2 is a cross sectional view showing a partially cut away molten metal container opening/closing device, and FIG. 3 is a tapping device. It is a schematic diagram showing a converter and a ladle at the time.
転炉１０は、図示しない傾動装置により支持されている
。炉体外周のトラニオンリング１２が傾動装置の回転軸
に連結され、転炉１０が直立状態から略９０°まで傾動
するようになっている。出鋼口１４が転炉１０の上部側
壁に設けられ、炉体傾動時に出鋼口１４の出湯路１６を
介して溶鋼１８が流出するようになっている。転炉内溶
ｗ４１８はスラグ１９により覆われている。The converter 10 is supported by a tilting device (not shown). A trunnion ring 12 on the outer periphery of the furnace body is connected to a rotating shaft of a tilting device, so that the converter 10 can tilt up to approximately 90° from an upright position. A tapping port 14 is provided on the upper side wall of the converter 10, and molten steel 18 flows out through a tap passage 16 of the tapping port 14 when the furnace body is tilted. The melt w418 in the converter is covered with slag 19.
一方、取鋼２０が転炉設備の下方に配設されている。取
鍋２０は、台車（図示せず）上に載置されており、溶鋼
が装入されると、転炉工場から連続鋳造工場まで搬送さ
れるようになっている。また、取１２０の受鋼箇所下方
には図示しない昇降装置が設けられ、取１２０が昇降さ
れるようになっている。溶鋼酸化防止用の蓋２４が取１
２０に被せられ、排気路２６を介して図示しない排気装
置により出鋼中の取ｗＡ２０内のガスを排気するように
なっている。転炉１０の出鋼口１４と取鍋２０の蓋２４
とは開閉装置２２により接続されており、出鋼溶鋼が大
気中に露出しないようにシールされている。すなわち、
蓋２４の上部が図示しないエアシリンダにより□昇降可
能に支持されており、開閉装置２２にＭ２４の上部が押
付けられるようになっている。On the other hand, a steel plate 20 is disposed below the converter equipment. The ladle 20 is placed on a truck (not shown), and when molten steel is charged therein, the ladle 20 is transported from the converter factory to the continuous casting factory. Further, a lifting device (not shown) is provided below the steel receiving portion of the truss 120, so that the truss 120 can be raised and lowered. The lid 24 for preventing oxidation of molten steel is removed.
20 , and the gas in the workpiece wA 20 during tapping is exhausted through an exhaust path 26 by an exhaust device (not shown). The tapping port 14 of the converter 10 and the lid 24 of the ladle 20
The opening and closing device 22 is connected to the opening/closing device 22, and the opening/closing device 22 is sealed to prevent exposed molten steel from being exposed to the atmosphere. That is,
The upper part of the lid 24 is supported by an air cylinder (not shown) so that it can move up and down, and the upper part of the M24 is pressed against the opening/closing device 22.
第１図及び第２図に示すように、出鋼口１４の出湯路１
６が開閉装置２２の下端部にて開口している。開閉装置
２２の鉄皮内には耐火煉瓦が内張すされ、弁箱３２が形
成されている。この弁箱３２の上部に開口する通路３３
が出湯路１６に連通している。開閉装置２２の弁体３４
が弁箱３２内で略水平方向にスライドするように設けら
れている。弁体３４は非多孔質の耐火物、例えば、耐溶
損性に優れるマグネシアカーボン質の耐火物によりつく
られている。溶湯通流路３６が、弁体３４の上下方向に
貫通している。弁体３４の厚さは、約３００ａｍである
。通流路３６は、その流入側の径が出湯路１６の径に略
一致しており、その流出側の径が大きく広がる、いわゆ
るラッパ状をなしている。ガス管４０．４２が弁体３４
内に夫々分岐して埋込まれており、多数の細孔４４がこ
のガス管４０．４２から上方に延び、弁体３４の上面に
て夫々開口している。すなわち、ガス管４０゜４２がガ
ス溜めの機能を有すると共に、細孔４４が出湯路１６に
ガスを吹込む機能を有しており、ガス管４０．４２及び
細孔４４によりＭＨＰが構成されている。また、弁体３
４と弁箱３２との摺動部に溶鋼が浸入することを阻止す
るために、弁体３４の通流路３６の周囲にもガスが供給
されるようになっている。ガスホース３８がガス管４０
に接続され、このガスホース３８に窒素ガス供給８ｉ（
図示せず）が接続されている。ガスホース３８は、弁体
３４の摺動動作に追従できるように耐熱性のフレキシブ
ル材料、例えば、ステンレス製フレキシブルホースでつ
くられている。As shown in FIGS. 1 and 2, the tapping path 1 of the tapping port 14
6 opens at the lower end of the opening/closing device 22. The iron skin of the opening/closing device 22 is lined with refractory bricks to form a valve box 32. A passage 33 that opens at the top of this valve box 32
is connected to the hot water outlet 16. Valve body 34 of opening/closing device 22
is provided to slide approximately horizontally within the valve box 32. The valve body 34 is made of a non-porous refractory, for example, a magnesia carbon refractory having excellent erosion resistance. A molten metal passage 36 passes through the valve body 34 in the vertical direction. The thickness of the valve body 34 is approximately 300 am. The flow path 36 has a so-called trumpet-like shape in which the diameter on the inflow side substantially matches the diameter of the outlet path 16 and the diameter on the outflow side widens. The gas pipes 40 and 42 are the valve body 34
A large number of pores 44 extend upward from the gas pipes 40, 42 and open at the upper surface of the valve body 34, respectively. That is, the gas pipes 40 and 42 have the function of a gas reservoir, and the pores 44 have the function of blowing gas into the outlet path 16, and the gas pipes 40 and 42 and the pores 44 constitute an MHP. There is. In addition, the valve body 3
In order to prevent molten steel from entering the sliding portion between the valve body 34 and the valve body 32, gas is also supplied around the flow path 36 of the valve body 34. Gas hose 38 is gas pipe 40
This gas hose 38 is connected to a nitrogen gas supply 8i (
(not shown) are connected. The gas hose 38 is made of a heat-resistant flexible material, such as a stainless steel flexible hose, so that it can follow the sliding movement of the valve body 34.
スクリュウ４６が水平に延び、その先端が弁体３４の側
部に遊び部材４７を介して連結される一方、その一部が
ケース５０に固定されたナツト４８に螺合されている。A screw 46 extends horizontally, and its tip is connected to the side of the valve body 34 via a play member 47, while a portion thereof is screwed into a nut 48 fixed to the case 50.
スクリュウ４６の後端にはハンドル５２が取付けられ、
ハンドル５２を回転するとスクリュウ４６が回転しつつ
前進又は後進し、弁体３４が回転することなく前後方向
に摺動するようになっている。なお、開閉装置２２と蓋
２４との間にはシール部材２８が介装され、溶鋼の流出
領域への外気の浸入が阻止されるようになっている。A handle 52 is attached to the rear end of the screw 46,
When the handle 52 is rotated, the screw 46 rotates and moves forward or backward, and the valve body 34 slides back and forth without rotating. A sealing member 28 is interposed between the opening/closing device 22 and the lid 24 to prevent outside air from entering the molten steel outflow area.
このように構成された開閉装置により溶鋼を出鋼する場
合は、吹錬終了後に、弁体３４により出湯路１６を遮断
した状態で細孔４４から窒素ガスを吹込みつつ、出鋼口
１４の側に炉体を傾動させると共に、取鍋２０を上昇さ
せ、開閉装置２２の開口を取鍋２０の蓋２４の開口に重
ね合せる。更に、蓋２４の上部を上昇させて開閉装置２
２の下面に押付ける。このようにして転炉出鋼口と取鍋
受鋼口とが連結されると、排気路２６を介して取鍋２０
内を排気する。次いで、ハンドル５２を回して弁体３４
を摺動し、通流路３６を出湯路１６に合致させる。これ
により、出鋼が開始される。When tapping molten steel using the opening/closing device configured in this way, after blowing is completed, the tap hole 14 is opened while blowing nitrogen gas through the fine hole 44 with the tap passage 16 blocked by the valve body 34. While tilting the furnace body to the side, the ladle 20 is raised to overlap the opening of the opening/closing device 22 with the opening of the lid 24 of the ladle 20. Furthermore, the upper part of the lid 24 is raised to close the opening/closing device 2.
Press it against the bottom surface of 2. When the converter tapping port and the ladle receiving port are connected in this way, the ladle 2
Exhaust the inside. Next, turn the handle 52 to release the valve body 34.
to align the flow path 36 with the outlet path 16. As a result, steel tapping is started.
やがて、取鍋２０内に所定量の溶鋼が収容されると、ハ
ンドル５２を回して弁体３４を前方へ摺動 ・させ
、通流路１６を遮ると共に、ガスホース３８゜ガス１１
４０．４２を介して細孔４４に供給される窒素ガス圧を
約４ｋ（Ｊ／ｃｔＡに上昇させる。供給窒素ガスは、ガ
ス管４０．４２に一旦流入し、ガス管４０．４２から夫
々の細孔４４に分配され、細孔４４から出湯路１６に噴
出する。ガスが吹込まれると、出湯路１６内の溶鋼が撹
拌されると共に排除されるので、通流路１６の内壁に溶
鋼が凝固付着しなくなる。Eventually, when a predetermined amount of molten steel is accommodated in the ladle 20, the handle 52 is turned to slide the valve body 34 forward, blocking the flow path 16 and opening the gas hose 38 to the gas 11.
The pressure of the nitrogen gas supplied to the pores 44 through the gas pipes 40.42 is increased to approximately 4 k (J/ctA).The supplied nitrogen gas once flows into the gas pipes 40.42, It is distributed to the pores 44 and ejected from the pores 44 to the outlet passage 16. When the gas is blown, the molten steel in the outlet passage 16 is stirred and removed, so that the molten steel is on the inner wall of the flow passage 16. It will not coagulate and adhere.
次いで、次チャージの取鍋が準備され、出鋼準′備が整
うと、ハンドル５２を回して弁体３４を摺動させ、通流
路３６を出湯路１６に合致させる。Next, when the ladle for the next charge is prepared and preparations for tapping are completed, the handle 52 is turned to slide the valve body 34 and align the flow path 36 with the tapping path 16.
これにより、出鋼が開始する。やがて、転炉１０内の残
留溶鋼１８が少なくなると、ハンドル５２を回して弁体
３４を摺動させ、出湯路１６を遮り、スラグ１９の流出
を阻止する。そして、傾動した炉体を立て直し、更に、
出鋼口１４の反対側に炉体を傾動し、炉の装入口から溶
融スラグ１９を図示しないタンデイツシュに注入する。As a result, steel tapping starts. Eventually, when the residual molten steel 18 in the converter 10 decreases, the handle 52 is turned to slide the valve body 34 to block the tapping path 16 and prevent the slag 19 from flowing out. Then, the tilted furnace body was rebuilt, and furthermore,
The furnace body is tilted to the side opposite to the tapping port 14, and molten slag 19 is injected into a tundish (not shown) from the charging port of the furnace.
上記実施例によれば、スラグが取鋼内に流出することな
く、従来よりも安全かつ確実に出鋼することができると
共に、出鋼中の溶鋼の酸化を防止することができる。According to the above-mentioned embodiment, the slag does not flow into the tapped steel, making it possible to tap the steel more safely and reliably than in the past, and to prevent oxidation of the molten steel during tapping.
また、上記実施例によれば、ち密な組織で摩擦抵抗が小
さなマグネシアカーボン質の耐火物を弁体に採用すると
共に、弁体と弁箱との摺動部にガスを吹込むので、摺動
部への溶鋼の浸入を阻止することができ、弁体を円滑に
摺動させることができる。Further, according to the above embodiment, a magnesia carbon refractory material with a dense structure and low frictional resistance is used for the valve body, and gas is blown into the sliding part between the valve body and the valve body, so that the sliding It is possible to prevent molten steel from entering the valve body, and the valve body can be slid smoothly.
更に、上記実施例によれば、弁体の溶湯通流路を流入側
よりも流出側のほうを広くしているので、溶鋼の流出が
容易になり、通流路の内壁に溶鋼が付着凝固することを
有効に阻止することができる。Furthermore, according to the above embodiment, since the molten metal flow path of the valve body is made wider on the outflow side than on the inflow side, the molten steel flows out easily, and the molten steel does not adhere to the inner wall of the flow path and solidify. This can be effectively prevented.
なお、上記実施例では転炉出鋼の場合について説明した
が、これに限らず精錬用取鍋又は溶銑鍋等の他の溶湯容
器にも用いることができ、従来では高温条件の理由から
開閉バルブの使用が不可能とされていた溶銑及びその他
の熱流体に使用するも可能である。Although the above embodiment describes the case of steel tapping in a converter, the use is not limited to this and can also be used in other molten metal containers such as a refining ladle or a hot metal ladle. It can also be used for hot metal and other hot fluids that were considered impossible to use.
また、上記実施例では摺動手段としてハンドル付のスク
リュウを採用したが、これに限らず摺動手段に、電動式
、油圧式又は空圧式のシリンダを用いることもでき、更
に、ワイヤ及びウィンチを組合わせた駆動装置、ラック
及びビニオンを組合わせた駆動装置を採用することもで
きる。Further, in the above embodiment, a screw with a handle was used as the sliding means, but the sliding means is not limited to this, but an electric, hydraulic or pneumatic cylinder may also be used, and wires and a winch may also be used. It is also possible to employ a combined drive, a combined rack and binion drive.
また、上記実施例では吹込みガスに窒素ガスを採用した
が、これに限らずアルゴンガス又は二酸化炭素ガス等の
他の非酸化性ガスを用いても同様の効果を得ることがで
きる。Further, in the above embodiment, nitrogen gas was used as the blowing gas, but the same effect can be obtained by using other non-oxidizing gases such as argon gas or carbon dioxide gas.
［発明の効果］
この発明によれば、ノズル詰まりを生じることなく、安
全かつ確実にスラグ流出を停止することができる。また
、弁体に実質的に溶湯が凝固付着しなくなるので、弁体
を繰返し使用することができ、コスト低減を図ることが
できる。[Effects of the Invention] According to the present invention, slag outflow can be stopped safely and reliably without causing nozzle clogging. Further, since the molten metal is substantially prevented from solidifying and adhering to the valve body, the valve body can be used repeatedly, and costs can be reduced.
第１図はこの発明の実施例に係る溶湯容器の開閉装置を
示す縦断面図、第２図は同じく溶湯容器の開閉装置の一
部を切り欠いて示す横断面図、第３図は出鋼時の転炉及
び取鋼を示す模式図である。
１０；転炉、１４；出鋼口、１６；出湯路、１８；溶鋼
、１９；スラグ、２０；取鍋、２２；開閉装置、３２；
弁箱、３３．３６：通流路、３４；弁体、３８：ガスホ
ース、４０．４２：ガス管、４４：細孔、４６；スクリ
ュウ、４８；ナツト、５２；ハンドル
出願人代理人 弁理士 鈴江武彦
第１図FIG. 1 is a longitudinal sectional view showing a molten metal container opening/closing device according to an embodiment of the present invention, FIG. 2 is a cross sectional view showing a partially cut away molten metal container opening/closing device, and FIG. 3 is a tapping device. FIG. 10; Converter, 14; Steel tapping port, 16; Tap channel, 18; Molten steel, 19; Slag, 20; Ladle, 22; Switching device, 32;
Valve box, 33.36: Flow passage, 34; Valve body, 38: Gas hose, 40.42: Gas pipe, 44: Pore, 46; Screw, 48; Nut, 52; Handle Applicant's representative Patent attorney Suzue Takehiko Figure 1
Claims (2)
成され、溶湯容器の出湯路を遮るために設けられた耐火
物からなる弁体と、この弁体を摺動可能に保持する耐火
物からなる弁箱と、出湯路を遮る出湯停止位置と出湯路
を弁体の溶湯通流路に連通させて開放する出湯位置との
間で弁体を摺動させる摺動手段と、溶湯停止位置にて出
湯路内にガスを吹込むために弁体の細孔にガスを供給す
るガス供給手段と、を有することを特徴とする溶湯容器
の開閉装置。(1) A molten metal flow path is formed with a large number of pores for gas injection, and a valve body made of refractory material is provided to block the exit path of the molten metal container, and this valve body is slidably held. a valve box made of a refractory material, and a sliding means for sliding the valve body between a hot water tap stop position that blocks the hot water tap path and a hot water tap position that opens the hot water tap path by communicating with the molten metal flow path of the valve body; An opening/closing device for a molten metal container, comprising: gas supply means for supplying gas to the pores of the valve body in order to blow gas into the outlet path at the molten metal stopping position.
広くなるように形成されていることを特徴とする特許請
求の範囲第１項に記載の溶湯容器の開閉装置。(2) The opening/closing device for a molten metal container according to claim 1, wherein the molten metal passageway of the valve body is formed so that the outflow side is wider than the inflow side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24955587A JPH0192309A (en) | 1987-10-02 | 1987-10-02 | Opening/closing device in molten metal vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24955587A JPH0192309A (en) | 1987-10-02 | 1987-10-02 | Opening/closing device in molten metal vessel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0192309A true JPH0192309A (en) | 1989-04-11 |
Family
ID=17194739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24955587A Pending JPH0192309A (en) | 1987-10-02 | 1987-10-02 | Opening/closing device in molten metal vessel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0192309A (en) |
-
1987
- 1987-10-02 JP JP24955587A patent/JPH0192309A/en active Pending
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