JPH0676612B2 - Hot metal pretreatment equipment - Google Patents
Hot metal pretreatment equipmentInfo
- Publication number
- JPH0676612B2 JPH0676612B2 JP6255290A JP6255290A JPH0676612B2 JP H0676612 B2 JPH0676612 B2 JP H0676612B2 JP 6255290 A JP6255290 A JP 6255290A JP 6255290 A JP6255290 A JP 6255290A JP H0676612 B2 JPH0676612 B2 JP H0676612B2
- Authority
- JP
- Japan
- Prior art keywords
- hot metal
- hole
- canopy
- lance
- injection lance
- 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
Landscapes
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は溶銑予備処理装置に関するものである。The present invention relates to a hot metal pretreatment device.
（従来技術） 溶銑鍋に収容した溶銑の脱珪、脱燐、脱硫等の予備処理
は、通常特開昭52−45126号公報に開示された装置によ
って行われている。(Prior Art) The pretreatment such as desiliconization, dephosphorization, and desulfurization of the hot metal contained in the hot metal ladle is usually carried out by the apparatus disclosed in JP-A-52-45126.
溶銑予備処理装置は、筒状本体とインジェクションラン
スを主構成とする。すなわち、筒状本体は、上端に天蓋
を有する下端開放型で、天蓋にランス昇降挿通用の貫通
孔を有し、側壁上部に排ガス吸引ダクトを接続し、処理
剤ホッパー・シュート装置等を天蓋に連設している。The hot metal pretreatment device mainly comprises a cylindrical body and an injection lance. That is, the tubular main body is an open lower end having a canopy at the upper end, has a through hole for inserting and removing a lance up and down in the canopy, connects an exhaust gas suction duct to the upper part of the side wall, and attaches a treating agent hopper / chute device to the canopy. It is connected.
そして、予備処理の際、昇降装置によって下端開口部を
溶銑鍋内の溶銑に浸漬して、インジェクションランスに
よる処理材（固酸、気酸、塩基度調整剤等のフラック
ス）の吹き込み処理時にスラグや溶銑が鍋外に飛散する
ことを防止すると共に発生ガスを吸引排出する。Then, at the time of pretreatment, the lower end opening is immersed in the hot metal in the hot metal ladle by the elevating device, and slag or a slag is injected at the time of injecting the processing material (solid acid, vaporic acid, flux such as basicity adjusting agent) by the injection lance. Prevents hot metal from scattering outside the pan and sucks out generated gas.
インジェクションランスは溶損が著しいので、交換可能
に該筒状本体から挿出入自在に設置される。またインジ
ェクションランスの浸漬部とその近傍部は、溶損変形と
地金やスラグの付着による増径変形をするため、交換時
の挿出入部には、ランス外周部に圧接させる固定式のシ
ール機構を設置することができない。従って該挿出入部
には単なるランス貫通孔しか設置できない。Since the injection lance has significant melting damage, it is replaceably installed so that it can be inserted into and removed from the tubular body. In addition, since the immersion part of the injection lance and its neighboring parts undergo melting damage deformation and increased diameter deformation due to adhesion of metal and slag, a fixed seal mechanism that press-contacts the outer periphery of the lance at the time of replacement. Can not be installed. Therefore, only a lance through hole can be installed in the insertion / removal portion.
天蓋に設けたランス昇降挿通用の貫通孔は、インジェク
ションランスの主に下半分の外周部が前記のように変形
することの他に、予備処理中にインジェクションランス
は大きく揺動することとあいまって、予想増径より若干
大きい孔径にしてランスの昇降挿通とランス揺動時の破
損防止を可能としてある。In addition to the deformation of the outer periphery of the lower half of the injection lance, as described above, the through hole for raising and lowering the lance provided on the canopy is combined with the fact that the injection lance swings significantly during pretreatment. With a hole diameter slightly larger than the expected diameter increase, it is possible to insert the lance up and down and prevent damage when the lance swings.
（発明が解決しようとする課題） 天蓋に設けたランス昇降挿通用の貫通孔は、上記の理由
により、溶銑予備処理時に該筒状本体の天蓋中央貫通孔
と、その上下近傍に位置するインジェクションランスの
外周部の直径との差を大きく拡張設計してあるため、排
気容量を多大に設計しても予備処理中に爆発的に発生す
る反応ガスの一部は、貫通孔から漏洩することが多い。(Problems to be solved by the invention) Due to the above reasons, the lance up-and-down through hole provided in the canopy is the canopy central through hole of the tubular body at the time of the hot metal pretreatment and the injection lances located near the top and bottom thereof. Because of the large difference in design with the diameter of the outer peripheral part, even if the exhaust volume is designed to be large, part of the reaction gas that explosively occurs during pretreatment often leaks from the through hole. .
本発明は、インジェクションランスを交換自在にすると
共に、天蓋中央貫通孔を破損させること無く、予備処理
中に発生する反応ガスがランス外周と貫通孔間のドーナ
ツ状隙間から漏洩するのを、確実に防止することを目的
とするものである。INDUSTRIAL APPLICABILITY The present invention makes it possible to replace the injection lance and ensure that the reaction gas generated during the pretreatment leaks from the donut-shaped gap between the lance outer periphery and the through hole without damaging the canopy central through hole. The purpose is to prevent.
（課題を解決するための手段） 上記目的を達成するために本発明の溶銑予備処理装置
は、上端に天蓋を有し下端開口部を溶銑鍋内の溶銑に浸
漬可能に設けた筒状本体と、該筒状本体の天蓋中央の貫
通孔を昇降挿通可能に設けたインジェクションランスと
を有する溶銑予備処理装置に於いて、 １）前記筒状本体の天蓋に設けた貫通孔の入口端縁と、
インジェクションランスの外周面との間を、平面移動開
閉可能に設けた一対のシール板と、各シール板をスプリ
ング機構を介して平面変位が復帰可能に支持して該シー
ル板の開閉方向に移動可能にした一対の開閉フレームと
を該筒状本体の天蓋上に設けると共に、前記貫通孔の孔
壁にシール用ガス噴出口を設けてなるガス漏洩防止装置
を設置したこと及び、 ２）上記１）の構成に加え、溶銑予備処理時に、筒状本
体の天蓋中央貫通孔とその上下近傍に位置するインジェ
クションランスの外周部に、その直径より大きい直径の
パイプを該ランスと同心的に設け、該パイプと該ランス
外周面間にシール材を配設したことにある。(Means for Solving the Problems) In order to achieve the above object, the hot metal pretreatment apparatus of the present invention is a tubular body having a canopy at the upper end and a lower end opening provided so as to be dipped in the hot metal in the hot metal ladle. A hot metal pretreatment device having an injection lance provided so that a through-hole in the center of the canopy of the tubular body can be inserted vertically, 1) an inlet end edge of the through-hole provided in the canopy of the tubular body,
A pair of seal plates that can be opened and closed in a plane are provided between the outer surface of the injection lance and the seal plates, and each seal plate is supported by a spring mechanism so that the plane displacement can be restored, and the seal plates can be opened and closed. A pair of open / close frames described above are provided on the canopy of the tubular main body, and a gas leakage prevention device is provided, which is provided with a gas outlet for sealing on the wall of the through hole, and 2) above 1). In addition to the above configuration, at the time of hot metal pretreatment, a pipe having a diameter larger than the diameter is provided concentrically with the lance on the outer periphery of the canopy central through hole of the tubular body and the injection lance located in the upper and lower portions thereof. And a sealing material is disposed between the outer peripheral surface of the lance.
（作用） 本発明において、前記一対のシール板は、各々対向端部
にインジェクションランスの外周面の半分に当接する半
円弧状の湾曲部を形成してシール状態を保持する。(Operation) In the present invention, each of the pair of seal plates has a semi-arcuate curved portion that abuts on one half of the outer peripheral surface of the injection lance at each of the opposing end portions to maintain the sealed state.
また、インジェクションランスの外周面への当接シール
状態を、該予備処理中にインジェクションランスが揺動
しても追従維持させるため、各シール板を開閉フレーム
にスプリング機構を介して平面変位が復帰可能に且つ上
下動を抑止して支持する。例えば、開閉フレームの両側
各々にスプリング機構の一端を軸連結し、各々スプリン
グ機構の他端をシール板の両側に軸連結して、前後左右
及びこれらの併合した平面変位動作とその復帰動作を可
能にすればよい。Further, since the contact seal state of the injection lance with the outer peripheral surface is kept following even if the injection lance swings during the pretreatment, each seal plate can be restored to the plane displacement via the spring mechanism on the opening / closing frame. In addition, it suppresses vertical movement and supports it. For example, one end of the spring mechanism is axially connected to both sides of the open / close frame, and the other end of the spring mechanism is axially connected to both sides of the seal plate, thereby enabling front-rear, left-right, and combined plane displacement operation and return operation thereof. You can do this.
スプリング機構としてしては、スプリングコイル装着ロ
ッド内蔵のシリンダー式スプリング機構、単なるスプリ
ングコイル、各種流体シリンダー式スプリング機構など
その他適宜な公知のスプリング機構を採用する。As the spring mechanism, a cylinder type spring mechanism with a built-in spring coil mounting rod, a simple spring coil, various fluid cylinder type spring mechanisms, and other appropriate known spring mechanisms are used.
またシール用ガス噴出口へのガス供給経路は、前記筒状
本体の例えば溶銑浸漬部分に内設した冷却パイプに供給
して戻した冷却ガスを、貫通孔を形成する例えばドーナ
ツ状チャンバーに導入し、このチャンバーの内周面つま
り孔壁周面にガス噴出口を設けて構成すれば、シール専
用に使用して大気放散するより利用効果がある。Further, the gas supply path to the gas outlet for sealing is introduced into, for example, a donut-shaped chamber forming a through hole, the cooling gas which is supplied and returned to a cooling pipe provided in, for example, the molten pig iron immersion portion of the tubular body. If the gas ejection port is provided on the inner peripheral surface of the chamber, that is, the peripheral surface of the hole wall, it is more effective than the exclusive use of the seal to dissipate into the atmosphere.
次に、上記インジェクションランスの増径部の設置範囲
は、少なくても該筒状本体の天蓋に設けた貫通孔とその
上下近傍とするものであるが、該貫通孔下方範囲は、溶
銑予備処理中に地金が付着しない領域であればよい。Next, the installation range of the increased diameter portion of the injection lance is at least the through hole provided in the canopy of the tubular main body and its upper and lower portions, but the lower range of the through hole is the hot metal pretreatment. It may be an area where the metal is not attached.
又、該増径部をランス本体の直径より大きい直径のパイ
プを配設する場合は、該パイプと該ランス外周面間に配
設するシール材としては、耐火物、リング状鉄板その他
適宜な材料を用いて溶銑予備処理中における下方からの
火炎が該パイプと該ランス外周面間に侵入することを防
止するのである。When a pipe having a diameter larger than the diameter of the lance body is arranged in the increased diameter portion, the sealing material arranged between the pipe and the outer peripheral surface of the lance may be a refractory material, a ring-shaped iron plate or any other suitable material. Is used to prevent a flame from below from entering between the pipe and the outer peripheral surface of the lance during the hot metal pretreatment.
（実施例） 本発明の実施例を第１図から第４図に基いて詳細に説明
する。10は、溶銑11を収容した溶銑鍋、12は、上端に天
蓋13を有し、下端開口部17を溶銑鍋10内の溶銑11に浸漬
する筒状本体であり、以下単にフリーボードと称する。(Embodiment) An embodiment of the present invention will be described in detail with reference to FIGS. 1 to 4. Reference numeral 10 is a hot metal ladle containing the hot metal 11, 12 is a cylindrical main body having a canopy 13 at the upper end, and a lower end opening 17 is immersed in the hot metal 11 in the hot metal ladle 10, and is simply referred to as a freeboard hereinafter.
フリーボード12は、上・中・下の３つに分離可能にして
あり、下の部分は浸漬部12aとし、上部には天蓋13を設
け、その中央にインジェクションランス14が昇降挿通可
能な貫通孔15を設け、側壁上部に排ガス吸引ダクト16を
接続し、処理剤ホッパーの下部シュート（図示せず）を
天蓋13に連通接続し、予備処理の際、昇降装置（図示せ
ず）によって下端開口部17を溶銑鍋10内の溶銑11内に浸
漬する。The freeboard 12 can be separated into three parts, upper, middle and lower, the lower part is the immersion part 12a, the canopy 13 is provided on the upper part, and the injection lance 14 is vertically inserted through the through hole. 15 is provided, an exhaust gas suction duct 16 is connected to the upper part of the side wall, a lower chute (not shown) of the processing agent hopper is connected to the canopy 13, and at the time of pretreatment, a lower end opening is made by an elevating device (not shown). 17 is immersed in the hot metal 11 in the hot metal ladle 10.
ガス漏洩防止装置は、前記貫通孔15の入口端縁とインジ
ェクションランス14外周面間の隙間をシールする開閉式
シール機構Ａと、ガス噴出式シール機構Ｇが主な構成で
ある。The gas leakage prevention device mainly includes an open / close type seal mechanism A for sealing a gap between the inlet edge of the through hole 15 and the outer peripheral surface of the injection lance 14, and a gas jet type seal mechanism G.
開閉式シール機構Ａは、前記天蓋13に設けた貫通孔15の
少なくとも入口端縁15aとインジェクションランス14外
周面との間を平面移動により開閉可能に設けた一対のシ
ール板20a,20bと、各シール板20a,20bをスプリング機構
21a,21bを介して平面変位が自在でかつ復帰可能に支持
して該シール板20a,20bの開閉方向に移動可能にした一
対の開閉フレーム22a,22bと、開閉フレーム22a,22b各々
の後部にピストンロッド23a,23bを連結したフレーム開
閉駆動用のシリンダー装置23と、開閉フレーム22a,22b
各々の開閉移動用のガイド24a,24bからなり、これら
は、フリーボード12の天蓋13の上に設ける。The open / close type seal mechanism A includes a pair of seal plates 20a, 20b which are openable and closable by planar movement between at least the inlet edge 15a of the through hole 15 provided in the canopy 13 and the outer peripheral surface of the injection lance 14, Spring mechanism for sealing plates 20a, 20b
A pair of open / close frames 22a, 22b that are movable in the open / close direction of the seal plates 20a, 20b by being supported in a plane-displaceable manner and returnable via 21a, 21b, and on the rear part of each of the open / close frames 22a, 22b. A cylinder device 23 for connecting and closing the piston rods 23a and 23b for opening and closing the frame, and opening and closing frames 22a and 22b.
The guides 24a and 24b for opening and closing each are provided on the canopy 13 of the freeboard 12.
前記シール板20a,20bは、開閉フレーム22a,22bに所定範
囲の前後左右代、平面移動可能に且つ上下動が抑止され
た状態で支持されている。また、前記一対のシール板20
a,20bは各々対向端部にインジェクションランス14の外
周面の半分に当接する半円弧状の湾曲部Wa,Wbを形成し
てシール状態を保持する。The seal plates 20a, 20b are supported by the open / close frames 22a, 22b in a predetermined range in the front-rear and left-right directions so that they can move in a plane and are prevented from moving up and down. In addition, the pair of seal plates 20
The a and 20b respectively form semi-arcuate curved portions Wa and Wb that abut on a half of the outer peripheral surface of the injection lance 14 at opposite ends to maintain a sealed state.
スプリング機構21a,21bは、各々一対設置しシール板20
a,20bの後部左右と軸支連結したシリンダーSa,Sbと、開
閉フレーム22a,22b前部左右と軸支連結したピストンロ
ッドR1，R2とピストンロッドR1，R2に固定連結したシリ
ンダ内ピストンP1，P2と、シリンダーSa,Sb内先端間に
装着したスプリングコイルCa,Cbとからなる。A pair of spring mechanisms 21a and 21b are installed, and the seal plate 20
Cylinders Sa and Sb axially connected to the left and right rear parts of a and 20b, and piston rods R 1 and R 2 and piston rods R 1 and R 2 fixedly connected to the left and right front parts of the opening and closing frames 22a and 22b. It consists of inner pistons P 1 and P 2 and spring coils Ca and Cb mounted between the inner tips of the cylinders Sa and Sb.
ガス噴出式シール機構Ｇは、天蓋13の中央に設けたイン
ジェクションランス14の昇降挿通用の貫通孔15を形成す
るドーナツ状チャンバー40と、このチャンバー40の内周
面つまり孔壁周面に設けたスリット状のシール用ガス噴
出口41と、シール用ガス噴出口41へのガス供給路からな
る。このシール用ガス噴出口41へのガス供給路は、前記
フリーボード12の浸漬部12aに内設した冷却パイプ50に
供給して戻した冷却ガスを、浸漬部12aの接合フランジ1
2b部の冷却チャンバー51連通管52を介してドーナツ状チ
ャンバー40に導入する経路である。The gas injection type seal mechanism G includes a doughnut-shaped chamber 40 having a through hole 15 for vertically inserting an injection lance 14 provided in the center of a canopy 13, and a slit-like chamber provided on an inner peripheral surface of the chamber 40, that is, a peripheral surface of the hole wall. And a gas supply path to the sealing gas ejection port 41. The gas supply path to the sealing gas ejection port 41 supplies the cooling gas supplied and returned to the cooling pipe 50 provided in the immersion part 12a of the freeboard 12 to the joint flange 1 of the immersion part 12a.
This is a path introduced into the doughnut-shaped chamber 40 through the communication pipe 52 of the cooling chamber 51 of the portion 2b.
インジェクションランス14において、増径部は、溶銑予
備処理時に該フリーボード12の天蓋中央貫通孔15とその
上下近傍に位置するインジェクションランスの胴部外周
部にその直径より大きい直径パイプ30を該ランスと同心
的に設け、該パイプの下端と該胴部外周面との間に耐火
物製のシール材31を充填配設して形成する。In the injection lance 14, the increased diameter portion has a pipe 30 having a diameter larger than the diameter of the canopy central through hole 15 of the freeboard 12 and the outer peripheral portion of the injection lance positioned vertically above and below the canopy central through hole 15 during the hot metal pretreatment. It is formed concentrically, and a sealant 31 made of refractory is filled and arranged between the lower end of the pipe and the outer peripheral surface of the body.
次に本実施例の一連の動作を説明する。Next, a series of operations of this embodiment will be described.
開閉式シール機構Ａは、シール板20a,20bを開状態に、
ガス噴出式シール機構Ｇは、シール用ガス噴出口41から
シールガスを貫通孔15内に噴出させた状態でフリーボー
ド12を下降させて、浸漬部12aを溶銑鍋10内の溶銑11に
浸漬する。The open / close type seal mechanism A opens the seal plates 20a and 20b,
The gas ejection type seal mechanism G lowers the freeboard 12 in a state in which the sealing gas is ejected from the sealing gas ejection port 41 into the through hole 15 and immerses the dipping portion 12a in the hot metal 11 in the hot metal ladle 10. .
次に貫通孔15からフリーボード12内にインジェクション
ランス14を下降挿入し、インジェクションランス14の下
端のガス噴出口からガスを噴出させながら、溶銑鍋10内
の溶銑11に所定深さ浸漬する。Next, the injection lance 14 is inserted downward from the through hole 15 into the freeboard 12, and the gas is ejected from the gas ejection port at the lower end of the injection lance 14 while being immersed in the hot metal 11 in the hot metal ladle 10 to a predetermined depth.
次に開閉式シール機構Ａは、シール板20a,20bを閉状態
にし、その半円弧状の湾曲部Wa,Wbをインジェクション
ランス14の増径部であるパイプ30の外周面に圧接せしめ
シールする。Next, in the open / close type seal mechanism A, the seal plates 20a, 20b are closed, and the semicircular arcuate curved portions Wa, Wb are pressed against the outer peripheral surface of the pipe 30, which is the increased diameter portion of the injection lance 14, to perform sealing.
この状態を維持し、インジェクションランスから精錬材
を溶銑中に吹き込み脱燐、脱硫等の処理を行う。この処
理過程でインジェクションランス14は、激しく首振り状
に揺動するが、貫通孔15上のシール板20a,20bはスプリ
ング機構21a,21bにより、揺動するインジェクションラ
ンス14の増径部外周面への湾曲部Wa,Wb圧接シールを追
従維持する。Maintaining this state, the refining material is blown into the hot metal from the injection lance to perform processing such as dephosphorization and desulfurization. In this process, the injection lance 14 swings violently in a swinging manner, but the seal plates 20a, 20b on the through hole 15 are moved to the outer peripheral surface of the increased diameter portion of the swinging injection lance 14 by the spring mechanisms 21a, 21b. The pressure contact seals of the curved portions Wa and Wb of the above are kept following.
これによって該脱燐、脱硫等の処理中に発生する反応ガ
スは、貫通孔15から外部に漏れることなく排ガス吸引ダ
クト16から吸引除去される。As a result, the reaction gas generated during the processing such as dephosphorization and desulfurization is sucked and removed from the exhaust gas suction duct 16 without leaking to the outside from the through hole 15.
該脱燐、脱硫等の処理を終了後は、前記開閉式シール機
構Ａのシール板20a,20bを開状態にし、インジェクショ
ンランス14を上昇挿出し、フリーボード12を上昇移動さ
せ浸漬部12aを溶銑鍋10内の溶銑11から所定高さ迄引き
上げて待機状態にする。After the completion of the dephosphorization, desulfurization, etc., the seal plates 20a, 20b of the opening / closing seal mechanism A are opened, the injection lance 14 is moved up and out, the free board 12 is moved up, and the dipping portion 12a is melted. The hot metal 11 in the pan 10 is pulled up to a predetermined height and put in a standby state.
（発明の効果） 本発明は、前記構成によってインジェクションランスを
交換自在にすると共に、天蓋中央貫通孔を破損させるこ
と無く、予備処理中に発生する反応ガスがランス外周と
貫通孔間のドーナツ状隙間から漏洩するのを確実に防止
するものである。(Effect of the Invention) According to the present invention, the injection lance is made replaceable by the above structure, and the reaction gas generated during the pretreatment is a donut-shaped gap between the outer periphery of the lance and the through hole without damaging the central through hole of the canopy. It surely prevents the leak from.
第１図は、本発明の一実施例を示す側面説明図、第２図
は、第１図の要部の拡大断面説明図、第３図は、第１図
の要部の拡大平面説明図、第４図は、インジェクション
ランスの増径部の拡大側面断面図である。 図において、 10:溶銑鍋、12:フリーボード 12b:接合フランジ、13:天蓋 14:インジェクションランス 15:貫通孔 20a,20b:シール板 21a,21b:スプリング機構 22a,22b:開閉フレーム 23:シリンダー装置 23a,23b:ピストンロッド 24a,24b:ガイド、30:パイプ 31:シール材 40:ドーナツ状チャンバー 50:冷却パイプ、51:冷却チャンバー 52:連通管 A:開閉式シール機構 Ca,Cb:スプリングコイル P1，P2：ピストン R1，R2：ピストンロッド Sa,Sb:シリンダーFIG. 1 is an explanatory side view showing an embodiment of the present invention, FIG. 2 is an enlarged sectional explanatory view of an essential part of FIG. 1, and FIG. 3 is an enlarged plan explanatory view of an essential part of FIG. FIG. 4 is an enlarged side sectional view of a diameter increasing portion of the injection lance. In the figure, 10: hot metal ladle, 12: freeboard 12b: joint flange, 13: canopy 14: injection lance 15: through holes 20a, 20b: seal plates 21a, 21b: spring mechanism 22a, 22b: open / close frame 23: cylinder device 23a, 23b: Piston rod 24a, 24b: Guide, 30: Pipe 31: Seal material 40: Donut chamber 50: Cooling pipe, 51: Cooling chamber 52: Communication pipe A: Open / close type seal mechanism Ca, Cb: Spring coil P 1, P 2: piston R 1, R 2: a piston rod Sa, Sb: cylinder
フロントページの続き (72)発明者 松尾 慎二 大分県大分市大字西ノ洲１ 新日本製鐵株 式会社大分製鐵所内 (72)発明者 宇梶 信生 大分県大分市大字西ノ洲１ 大分設備設計 株式会社内 (72)発明者 田渕 敏 大分県大分市大字西ノ洲１ 新日本製鐵株 式会社大分製鐵所内Front page continuation (72) Inventor Shinji Matsuo 1 Nishinozu, Oita-shi, Oita Pref. Inside the Oita Steel Co., Ltd., Nippon Steel Co., Ltd. (72) Inventor Satoshi Tabuchi 1 Nishinosu, Oita-shi, Oita New Nippon Steel Co., Ltd. Oita Works
Claims (2)
溶銑に浸漬可能に設けた筒状本体と、該筒状本体の天蓋
中央の貫通孔を昇降挿通可能に設けたインジェクション
ランスとを有する溶銑予備処理装置に於いて、前記筒状
本体の前記貫通孔の入口端縁とインジェクションランス
の外周面との間を平面移動により開閉可能に設けた一対
のシール板と、各シール板をスプリング機構を介して平
面変位が復帰可能に支持して該シール板の開閉方向に移
動可能にした一対の開閉フレームとを該筒状本体の天蓋
上に設けると共に、前記貫通孔の孔壁にガス噴出口を設
けたことを特徴とする溶銑予備処理装置。1. A tubular main body having a canopy at the upper end so that the opening at the lower end can be immersed in the hot metal in the hot metal ladle, and an injection lance provided through a through hole at the center of the canopy of the tubular main body so that it can be vertically inserted. In a hot metal pretreatment device having a pair of seal plates provided so as to be openable and closable by a plane movement between an inlet end edge of the through hole of the tubular body and an outer peripheral surface of an injection lance, and each seal plate. A pair of open / close frames, which are supported by a spring mechanism so that their plane displacement can be restored and are movable in the opening / closing direction of the seal plate, are provided on the canopy of the tubular main body, and the pair of open / close frames are provided on the hole wall of the through hole. A hot metal pretreatment device characterized in that a gas jet port is provided.
溶銑に浸漬可能に設けた筒状本体と、該筒状本体の天蓋
中央の貫通孔を昇降挿通可能に設けたインジェクション
ランスとを有する溶銑予備処理装置に於いて、前記筒状
本体の前記貫通孔の入口端縁とインジェクションランス
の外周面との間を平面移動により開閉可能に設けた一対
のシール板と、各シール板をスプリング機構を介して平
面変位が復帰可能に支持して該シール板の開閉方向に移
動可能にした一対の開閉フレームとを該筒状本体の天蓋
上に設けると共に、前記貫通孔の孔壁にガス噴出口を設
け、溶銑予備処理時に該筒状本体の天蓋中央貫通孔とそ
の上下近傍に位置するインジェクションランスの外周部
にその直径より大きい直径のパイプを該ランスと同心的
に設け、該パイプと該ランス外周面間にシール材を配設
したことを特徴とする溶銑予備処理装置。2. A tubular main body having a canopy at the upper end so that the lower end opening can be immersed in the hot metal in the hot metal ladle, and an injection lance provided with a through hole at the center of the canopy of the tubular main body so as to be vertically insertable. In a hot metal pretreatment device having a pair of seal plates provided so as to be openable and closable by a plane movement between an inlet end edge of the through hole of the tubular body and an outer peripheral surface of an injection lance, and each seal plate. A pair of open / close frames, which are supported by a spring mechanism so that their plane displacement can be restored and are movable in the opening / closing direction of the seal plate, are provided on the canopy of the tubular main body, and the pair of open / close frames are provided on the hole wall of the through hole. A gas ejection port is provided, and a pipe having a diameter larger than the diameter is provided concentrically with the lance on the outer peripheral portion of the canopy central through hole of the tubular body and the injection lance located in the upper and lower portions thereof at the time of hot metal pretreatment. Molten iron pretreatment apparatus, wherein a sealant is disposed between the lance outer peripheral surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6255290A JPH0676612B2 (en) | 1990-03-15 | 1990-03-15 | Hot metal pretreatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6255290A JPH0676612B2 (en) | 1990-03-15 | 1990-03-15 | Hot metal pretreatment equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03264613A JPH03264613A (en) | 1991-11-25 |
| JPH0676612B2 true JPH0676612B2 (en) | 1994-09-28 |
Family
ID=13203534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6255290A Expired - Lifetime JPH0676612B2 (en) | 1990-03-15 | 1990-03-15 | Hot metal pretreatment equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0676612B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20220125568A (en) * | 2021-03-05 | 2022-09-14 | 국도정밀(주) | Apparatus for reducing harmful gas exhausting of blast furance |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3175836B1 (en) * | 2014-07-29 | 2018-10-31 | Sakai Chemical Industry Co., Ltd. | Cosmetic material |
| CN108531678B (en) * | 2018-07-06 | 2023-06-20 | 鞍钢股份有限公司 | Installation method of spray gun for molten iron rotary blowing composite desulfurization |
-
1990
- 1990-03-15 JP JP6255290A patent/JPH0676612B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20220125568A (en) * | 2021-03-05 | 2022-09-14 | 국도정밀(주) | Apparatus for reducing harmful gas exhausting of blast furance |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03264613A (en) | 1991-11-25 |
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