JPH08243730A - Device for removing slag - Google Patents
Device for removing slagInfo
- Publication number
- JPH08243730A JPH08243730A JP19158795A JP19158795A JPH08243730A JP H08243730 A JPH08243730 A JP H08243730A JP 19158795 A JP19158795 A JP 19158795A JP 19158795 A JP19158795 A JP 19158795A JP H08243730 A JPH08243730 A JP H08243730A
- Authority
- JP
- Japan
- Prior art keywords
- slag
- scraping plate
- molten metal
- gas
- scraping
- 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
- 239000002893 slag Substances 0.000 title claims abstract description 118
- 238000007790 scraping Methods 0.000 claims abstract description 59
- 239000002184 metal Substances 0.000 claims abstract description 58
- 229910052751 metal Inorganic materials 0.000 claims abstract description 58
- 239000003795 chemical substances by application Substances 0.000 claims description 21
- 238000002347 injection Methods 0.000 claims description 20
- 239000007924 injection Substances 0.000 claims description 20
- 238000007667 floating Methods 0.000 claims description 11
- 239000011810 insulating material Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 abstract description 3
- 230000000630 rising effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 26
- 238000000034 method Methods 0.000 description 10
- 238000007664 blowing Methods 0.000 description 8
- 238000006748 scratching Methods 0.000 description 6
- 230000002393 scratching effect Effects 0.000 description 6
- 101150006573 PAN1 gene Proteins 0.000 description 5
- 230000008439 repair process Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 101100298222 Caenorhabditis elegans pot-1 gene Proteins 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、高炉、または転炉
等から溶融金属容器（以下、鍋と呼称する）に注ぎ込ま
れた溶融金属の表面に浮遊する滓を機械的に掻き出し除
去する除滓装置であって、特に滓を効率的に除滓する装
置、および除滓すると共に肌湯面に保温剤を供給する装
置に関するものである。TECHNICAL FIELD The present invention relates to a slag for mechanically scraping out and removing slag floating on the surface of molten metal poured from a blast furnace, a converter or the like into a molten metal container (hereinafter referred to as a pot). More particularly, the present invention relates to a device for efficiently removing slag, and a device for removing slag and supplying a heat retaining agent to the surface of the skin.
【０００２】[0002]
【従来の技術】高炉から出銑された溶銑鍋内の溶銑、ま
たは転炉から出鋼された溶鋼鍋内の溶鋼は、図６のよう
に滓４で表面が覆われている。前記溶銑または溶鋼など
の溶融金属３の表面を覆って浮遊する滓４は、除去する
必要が発生する。前記の如き滓除去は製銑・製鋼工程に
おいて欠かすことができない作業の一つとなっている。
図６は代表的な機械式滓掻き設備の全体取り合い側面図
を示すもので、鍋１は鍋傾転装置５によって傾斜され、
溶融金属３上に浮遊する滓４が滓排出口２の方向へ、横
行移動する滓掻き装置８から延伸した掻き板支持アーム
９の先端にある掻き板１０によって、排滓鍋６内へ掻き
出される。ところが、図７から明らかなように、鍋１の
奥や壁際に浮遊する滓４は、掻き板支持アーム９が壁に
当たり構造的に届かないため、滓４を完全に除去するこ
とが困難である。また、溶融金属３の表面全体を覆って
いる状態にある滓４の掻き始めは、能率よく除去でき
る。しかしながら、滓４が徐々に減少し、点在する状態
になってくると、滓４を溶融金属３と一緒に掻いて除去
するようになる。この時、溶融金属３は掻き板１０の横
方向へ流れて逃げることに伴って、滓４も掻き板１０の
横へ逃げることとなり、除去が困難になり、長時間を要
することになる。そこで、溶融金属３の表面を狭めるべ
く、傾斜させている鍋１を一旦起こして点在している滓
を集め、再度鍋１を傾斜させて奥に保温材を投入し、掻
き板１０が届く位置まで寄せることが行われている。ま
た、掻き板１０で溶融金属３を旋回させて、滓４を手前
の滓排出口２に近付けて掻き出すことも行われている。
また、特公昭４９−７７６９号公報には、ポーラスプラ
グからガス吹きにより滓を集めることが記載されてお
り、特公昭５６−３１５００号公報、および特開昭６１
−２４６３０公報においても同様の技術が開示されてい
る。さらに、特開昭５５−８９６８５号公報には、ガス
吹き出し口がほぼ滓排出方向を指向した１以上のランス
を用い、不活性ガスまたは可燃性ガスジェットの一方も
しくは両方を滓浴面上に吹き付けて滓を除去することが
記載されている。2. Description of the Related Art The surface of molten iron in a molten iron pot tapped from a blast furnace or molten steel in a molten steel pot tapped from a converter is covered with a slag 4 as shown in FIG. The slag 4 that floats over the surface of the molten metal 3 such as the hot metal or molten steel needs to be removed. The above-mentioned slag removal is one of the operations indispensable in the pig-making and steel-making processes.
FIG. 6 shows a side view of the whole of a typical mechanical slag scraping equipment, in which the pan 1 is tilted by a pan tilting device 5,
The slag 4 floating on the molten metal 3 is scraped out into the slag ladle 6 by a scraping plate 10 at the tip of a scraping plate supporting arm 9 extending from a shaving scraping device 8 moving transversely toward the slag discharging port 2. Be done. However, as is clear from FIG. 7, it is difficult to completely remove the slag 4 that floats in the back of the pot 1 or on the wall because the scraping plate support arm 9 hits the wall and does not reach structurally. . Further, the scratching start of the slag 4 covering the entire surface of the molten metal 3 can be removed efficiently. However, when the slag 4 gradually decreases and becomes scattered, the slag 4 and the molten metal 3 are scratched and removed. At this time, as the molten metal 3 flows in the lateral direction of the scraping plate 10 and escapes, the slag 4 also escapes to the lateral side of the scraping plate 10, making removal difficult and requiring a long time. Then, in order to narrow the surface of the molten metal 3, the tilted pan 1 is once raised to collect the scattered slags, the pan 1 is tilted again, and the heat insulating material is put into the back, and the scraping plate 10 reaches. It is carried out to the position. Further, the scraping plate 10 is also used to swirl the molten metal 3 so that the slag 4 is brought close to the slag discharge port 2 in the front and is scraped out.
Further, Japanese Patent Publication No. 49-7769 describes that slag is collected from a porous plug by gas blowing, and Japanese Patent Publication No. 56-31500 and Japanese Patent Laid-Open Publication No. 61-31500.
A similar technique is disclosed in Japanese Patent No. 24630. Further, in Japanese Patent Laid-Open No. 55-89685, one or more lances whose gas outlets are oriented substantially in the slag discharge direction are used to spray one or both of an inert gas and a combustible gas jet onto the slag bath surface. To remove the slag.
【０００３】[0003]
【発明が解決しようとする課題】上記のような従来の除
滓技術において、溶融金属の表面を狭めるべく、傾斜さ
せている鍋を一旦起こして点在している滓を集め、再度
鍋を傾斜させて奥に保温材を投入し、掻き板が届く位置
まで寄せる場合、および掻き板で溶融金属を旋回させ
て、滓を手前の滓排出口に近付けて掻き出す場合には、
溶融金属表面がほぼ露出した状態で鍋を起伏させるた
め、溶融金属の温度低下が著しく、操業上好ましくな
く、熱エネルギー的にも非常に不利である。また、周囲
が高温状態になっている時間が長引き、作業員の労働環
境が悪化することとなる。さらに、残存量が少なくなっ
て、点在するようになった滓は、溶融金属と共に繰り返
し掻き出すことになり、歩留まりも低下することにな
る。また、特公昭４９−７７６９号公報に開示されてい
る技術は、噴射ガスによって溶融金属が強烈に攪拌され
る。そのため、ガスによって冷却されると共に、常に新
しい溶融金属面が曝されるので温度低下が著しく、ポー
ラスプラグのガス噴射口は、常時ガスを吹かしていない
限り閉塞する可能性があり、寿命が短く取替え等の補修
費用も高くなる。また、特公昭５６−３１５００号公
報、および特開昭６１−２４６３０５号公報記載の技術
においても、噴射ガスによる攪拌で溶融金属が冷却さ
れ、また、噴射ノズルを溶融金属に浸漬するため、溶損
劣化が著しく補修費用も高くなる等の問題がある。In the conventional slag technology as described above, in order to narrow the surface of the molten metal, the tilted pans are once raised, the scattered slags are collected, and the pans are tilted again. Then, when putting the heat insulating material in the back and bringing it to a position where the scraping plate can reach, and when swirling the molten metal with the scraping plate and bringing the slag close to the slag discharge port in front, and scraping it out,
Since the pan is undulated while the surface of the molten metal is almost exposed, the temperature of the molten metal is significantly lowered, which is not preferable in operation and is very disadvantageous in terms of thermal energy. In addition, the time when the surroundings are in a high temperature is prolonged, and the working environment of the worker deteriorates. Furthermore, the residual amount becomes small and the slag that has become scattered is repeatedly scraped out together with the molten metal, and the yield also decreases. Further, in the technique disclosed in Japanese Patent Publication No. Sho 49-7769, the molten metal is vigorously stirred by the injection gas. Therefore, as it is cooled by gas and the new molten metal surface is constantly exposed, the temperature drop is remarkable, and the gas injection port of the porous plug may be blocked unless gas is constantly blown, and the life is short and replacement is required. The cost of repairs will also increase. Further, in the techniques described in Japanese Patent Publication No. 56-31500 and Japanese Patent Laid-Open No. 61-246305, the molten metal is cooled by stirring with a jet gas, and the injection nozzle is immersed in the molten metal, so that melting loss is caused. There is a problem that the deterioration is remarkable and the repair cost is also high.
【０００４】また、特開昭５５−８９６８５号公報記載
の技術は、ガス吹き出し口入射角が排出方向に規定され
ているので、鍋の壁際から吹きだしガス衝突面までの間
にある滓は排出できないことになる。また、滓の量にも
よるが、大量の滓をガス吹きのみで短時間に除去しよう
とすると、高圧ガスを大量に噴射し、しかも噴射角を厳
密にコントロールする必要があり、また、エネルギー的
にも時間的にも損失が多い。滓が少量で全面に点在する
ような場合には、効率が悪くなり、さらに溶融金属を跳
ね出す危険性があり、厳重な防災対策が必要となり、地
金ロスにもつながることとなる。また、滓掻きの自動化
が近年進んでおり、滓の分布状態を画像処理によって認
識し、分布状態に応じて繰り返し滓掻きを行うなどの方
法が取られている。この方法の問題点として、滓が点在
しているために時間が掛かるうえ、完全な滓掻きは不可
能である。Further, in the technique disclosed in Japanese Patent Laid-Open No. 55-89685, since the incident angle of the gas outlet is regulated in the discharge direction, the slag between the wall of the pot and the blowing gas collision surface cannot be discharged. It will be. Also, depending on the amount of slag, if a large amount of slag is to be removed in a short time only by blowing gas, a large amount of high-pressure gas must be injected, and the injection angle must be strictly controlled. Also, there are many losses in terms of time. If a small amount of slag is scattered all over the surface, the efficiency becomes poor, and there is a risk of splashing molten metal, which requires strict disaster prevention measures and leads to loss of metal. In addition, automation of slag scraping has progressed in recent years, and methods such as recognizing the distribution state of slags by image processing and repeatedly scraping scraps according to the distribution state have been adopted. The problem with this method is that it is time consuming due to the scattered slag and that it is impossible to completely scrape it.
【０００５】本発明は、このような問題点を解決するた
めになされたものであり、溶融金属表面上に点在して排
除が困難な少量の滓を、能率良く効果的に排滓できる除
滓装置を得ること、および除滓すると共に、保温剤を肌
湯面に供給する装置を得ることを目的とする。The present invention has been made in order to solve the above problems, and can remove a small amount of slag scattered on the surface of a molten metal and difficult to remove efficiently and effectively. An object of the present invention is to obtain a slag device and a device for removing the slag and supplying the heat retaining agent to the surface of the skin.
【０００６】[0006]
【課題を解決するための手段】本願発明の除滓装置に係
る第１の発明は、溶融金属容器内の溶融金属の表面に浮
遊する滓を、往復運動する掻き板により掻き出す除滓装
置において、該掻き板の上部に気体噴射ノズルを併設
し、該気体噴射ノズルより噴射された気体の流れが、直
接或いは鍋壁面から反射し、溶融金属表面に浮遊してい
る滓を移動させるので、掻き板で掻ける範囲に滓を集め
ることができる。また、溶融金属全表面に点在して浮遊
する滓に対しても、滓は溶融金属表面より突出ているた
め、点在していても必然的に一塊に吹き寄せ集められ掻
き出し易くすることができる。第２の発明は、前記気体
噴射ノズルの噴射方向が遠隔操作により変更自在である
から、溶融金属表面の任意の箇所へ滓を吹き寄せること
ができる。第３の発明は、溶融金属容器内の溶融金属の
表面に浮遊する滓を、往復運動する掻き板により掻き出
す除滓装置において、該掻き板の上部に気体噴射ノズル
を併設し、該気体噴射ノズルより噴射された気体の流れ
により前記滓を寄せ集めると共に、保温材供給装置を設
けて滓を寄せ集め中または寄せ集め直後に、肌湯面に保
温剤を供給するので、溶融金属表面の放熱と寄せ集めら
れた滓の戻りを防止できる。第４の発明は、前記保温剤
を気体噴射ノズルにより掻き板近傍に供給するので、滓
が移動して露出した肌湯面を直ち覆い、放熱と寄せ集め
られた滓の戻りをさらに効率良く防止することができ
る。The first invention relating to the slag removing device of the present invention is a slag removing device for scraping a slag floating on the surface of molten metal in a molten metal container by a reciprocating scratching plate, A gas injection nozzle is provided above the scraping plate, and the flow of the gas sprayed from the gas spraying nozzle is reflected directly or from the wall surface of the pot to move the slag floating on the molten metal surface. You can collect slag in the area you can scratch with. Further, even if the slag is scattered over the entire surface of the molten metal and the slag is protruding from the surface of the molten metal, even if it is scattered, it can be inevitably blown into a lump and easily scraped out. . In the second aspect of the invention, since the injection direction of the gas injection nozzle can be changed by remote control, the slag can be blown to any position on the surface of the molten metal. A third invention is a slag removing device for scraping off a slag floating on the surface of a molten metal in a molten metal container by a reciprocating scraping plate, wherein a gas injection nozzle is provided above the scraping plate. While gathering the slag by the flow of the injected gas, a heat insulating material supply device is provided and the heat insulating agent is supplied to the surface of the skin bath during or immediately after the slag is gathered. It is possible to prevent the return of the gathered slag. In the fourth invention, since the heat retaining agent is supplied to the vicinity of the scraping plate by the gas injection nozzle, the slag is moved to directly cover the exposed surface of the skin bath, thereby more efficiently dissipating the heat and returning the gathered slag. Can be prevented.
【０００７】[0007]
【発明の実施の形態】図１は本発明の一実施形態に係る
除滓装置の要部構成を示す側面図であり、符号１〜１０
は上記従来のものと同一のものである。１１はパイプノ
ズルであり、掻き板支持アーム９に添えられて設けられ
ており、掻き板１０の近傍に気体が噴出するような状態
になっている。高炉、または転炉等から溶融金属３が注
入された鍋１は滓掻き工場に輸送されて来る。所定の位
置に停止した鍋１は、鍋傾転装置５により所定の角度に
傾転し、溶融金属３上に浮遊する滓４を滓掻き装置８か
ら延伸した掻き板支持アーム９の先端部に設けられた掻
き板１０によって粗掻きする。この結果、図５に示すよ
うに、溶融金属３の表面上に浮遊する滓４は、小さいも
のが点在し、滓排出口２側から遠い側の掻き出せない位
置には塊が集まった状態で残存することになる。そこ
で、上記のように構成された除滓装置においては、上記
滓４を粗掻きした後、鍋１は傾転角度を変更することな
く、当初の傾転状態としておき、掻き板支持アーム９を
上昇し掻き板１０を溶融金属３表面より若干上げた状
態、実施例では掻き板１０と溶融金属３表面との間隔を
１００mm程度離した状態にする。次に、パイプノズル１
１を機械的な構造で遠隔操作して壁際に向け、元バルブ
（図示せず）を開き、掻き板１０の届かない壁際近くに
気体を噴射する。溶融金属３の比重が概略７でありこれ
に対し、滓４の比重が約２．２であるため、滓４は溶融
金属３の表面より３分の２位は突出し浮遊している。噴
射した気体（エアー）は、直接或いは鍋壁面から反射
し、滓４に選択的に当たり、滓４は掻き板１０で掻き出
せる範囲に出て来る様になる。すなわち、パイプノズル
１１から気体を吹き出すことによって、図２（ａ）に示
すような滓排出口２側から遠い側の掻き出せない滓４
が、滓排出口２側に押し出されくる。前記図２（ａ）の
状態から掻き板支持アーム９を左右に操作しながら手前
に吹き寄せ点在している滓４をも図２（ｂ）に示す状態
へと一塊にする。その際、図３に示すように、パイプノ
ズル１１へ繋がる配管系に保温剤供給ホッパーを接続し
ておき、保温剤を供給できるようにする。そして、エア
ー吹きの最中に保温剤供給系統を運転して保温剤を供給
する。この結果、図４に示すように、移動しつつある滓
の後に続けて湯面に、または滓が移動して肌湯となった
湯面に直ちに保温剤１３を供給して覆い、溶融金属表面
の放熱と寄せ集められた滓の戻り防止が実現できる。そ
の後、エアーバルブ、保温剤の供給を停止し、掻き板１
０により滓掻きを行い滓排出口２から排滓し、滓掻きを
完了する。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a side view showing the configuration of the main part of a slag removing apparatus according to an embodiment of the present invention, and is denoted by reference numerals 1-10
Is the same as the above-mentioned conventional one. Reference numeral 11 denotes a pipe nozzle, which is provided along with the scraping plate supporting arm 9 and is in a state in which gas is ejected in the vicinity of the scraping plate 10. The pot 1 into which the molten metal 3 has been injected from the blast furnace, the converter or the like is transported to the slag scraping factory. The pan 1 stopped at a predetermined position is tilted at a predetermined angle by the pan tilting device 5, and the slag 4 floating on the molten metal 3 is attached to the tip of a scraping plate support arm 9 extended from the slag scraping device 8. The scraping plate 10 provided provides rough scratching. As a result, as shown in FIG. 5, the slag 4 floating on the surface of the molten metal 3 is scattered with small ones, and lumps are gathered at a position far from the slag discharge port 2 side that cannot be scraped. Will remain. Therefore, in the slag removing device configured as described above, after roughly scraping the slag 4, the pan 1 is kept in the initial tilted state without changing the tilt angle, and the scraping plate support arm 9 is set. The scraping plate 10 is lifted and slightly raised from the surface of the molten metal 3, and in the embodiment, the scratch plate 10 and the surface of the molten metal 3 are separated by about 100 mm. Next, the pipe nozzle 1
1 is remotely controlled by a mechanical structure to face the wall, and a main valve (not shown) is opened to inject gas near the wall that the scraping plate 10 cannot reach. Since the specific gravity of the molten metal 3 is approximately 7 and the specific gravity of the slag 4 is about 2.2, the slag 4 projects and floats at a position of two thirds above the surface of the molten metal 3. The sprayed gas (air) is reflected directly or from the wall surface of the pot and selectively hits the slag 4, and the slag 4 comes out within a range that can be scraped by the scraping plate 10. That is, by blowing out the gas from the pipe nozzle 11, the slag 4 on the side far from the slag discharge port 2 side as shown in FIG.
However, it is pushed out toward the slag discharge port 2 side. 2 (a), while operating the scraping plate support arm 9 to the left and right, the slag 4 scattered toward the front is also lumped to the state shown in FIG. 2 (b). At that time, as shown in FIG. 3, the heat retaining agent supply hopper is connected to the pipe system connected to the pipe nozzle 11 so that the heat retaining agent can be supplied. Then, the heat retaining agent supply system is operated during the air blowing to supply the heat retaining agent. As a result, as shown in FIG. 4, the warming agent 13 is immediately supplied to the molten metal surface to cover the molten metal surface continuously after the moving slag or to the molten metal surface where the slag has moved to become the skin hot water. It is possible to realize heat dissipation and prevent the returned slag from gathering together. After that, the air valve and the supply of heat retaining agent are stopped,
The scrap is scraped by 0, discharged from the scrap discharge port 2, and the scrap is completed.
【０００８】前記パイプノズル１１からの気体噴射方式
には２方式あり、積極的に溶融金属３に流れを生じさ
せ、溶融金属３に浮遊している滓４を衝突させ集める原
理であるインジェクション方式と滓４を直接エアーで吹
き寄せ、溶融金属３に浮遊している滓４を集める原理で
あるエアー吹き方式とすることができる。この滓吹き寄
せに使用するパイプノズル１１は、配管用炭素鋼鋼管を
使用し、噴射距離は、溶融金属３表面より７００mm程度
の上部、噴射流量はパイプノズル一本当たり２６０Nm3
/Hr 程度、噴射時間は約２分程度で十分吹き寄せ可能と
なった。従来は、粗掻き後、滓寄せのための鍋傾転に４
分程度要していたが、これが不要となった。また、パイ
プノズル１１は溶融金属３表面から高く離れた所にある
ため、輻射熱による影響も少なくノズルの構造としても
特殊な物でないため、劣化も少なく補修も容易である。
溶融金属３の表面のエアーブローであるため、溶融金属
３の温度低下は少ない。以上の通り、滓４は一定のパタ
ーンで粗掻きした後、滓掻き支持アーム９の動きとノズ
ルよりのエアー吹き寄せをパターン化し、排出口に滓４
を吹き寄せ、パターン化した掻き出しで排滓を完全に実
行できる。よって、設備的に高度な技術の画像処理等に
頼らずとも十分滓掻きの自動化は可能となる。There are two methods for injecting gas from the pipe nozzle 11, and there is an injection method which is a principle of positively causing a flow in the molten metal 3 and colliding and collecting slag 4 floating in the molten metal 3. The slag 4 may be blown directly with air to collect the slag 4 floating in the molten metal 3, which is an air blowing method. The pipe nozzle 11 used for this slag blowing uses a carbon steel pipe for piping, the injection distance is about 700 mm above the surface of the molten metal 3, and the injection flow rate is 260 Nm 3 per pipe nozzle.
/ Hr, and the injection time was about 2 minutes. Conventionally, after rough scraping, tilting the pan to gather slag 4
It took about a minute, but this is no longer needed. Further, since the pipe nozzle 11 is located at a high distance from the surface of the molten metal 3, the influence of radiant heat is small and the structure of the nozzle is not special, so there is little deterioration and repair is easy.
Since the surface of the molten metal 3 is blown by air, the temperature drop of the molten metal 3 is small. As described above, after the slag 4 is roughly scratched in a fixed pattern, the movement of the slag scratching support arm 9 and the air blown from the nozzle are patterned, and the slag 4 is discharged to the discharge port.
The slag can be completely carried out with the patterned scraping. Therefore, it is possible to automate the scraping sufficiently without relying on the image processing of a high technology in terms of equipment.
【０００９】上記実施形態において、保温剤の供給は、
掻き板の上部に併設した気体噴射ノズルより噴射された
気体の流れにより前記滓を寄せ集めると共に、保温剤を
供給するようにしているが、別に保温剤投入手段を独立
して、またはシュートなどを掻き板支持アームに並設し
て保温剤が投入できるようにしてもよい。In the above embodiment, the supply of the heat retaining agent is
While the slag is gathered together by the flow of the gas jetted from the gas jet nozzle attached to the upper part of the scraping plate, the heat insulating agent is supplied, but the heat insulating agent feeding means is separately provided or a chute or the like is used. It may be arranged in parallel with the scraping plate support arm so that the heat retaining agent can be put therein.
【００１０】[0010]
【発明の効果】以上のように本発明によれば、粗掻きし
た状態から、鍋の起伏をした後、保温剤を投入する作業
等を行わず、連続して保温剤投入および滓掻き作業が行
える。また、次工程で放熱防止のため、保温剤投入作業
を実施しているが、この作業の軽減、または削除が可能
となることから、作業時間の短縮により、溶融金属の温
度低下を防止し、以降の工程余裕が確保でき、さらに、
溶融金属の表面のエアーブローであるため、溶融金属の
温度低下させる度合いも少ない。また、設備費用も非常
に安価で、また、劣化が少なく補修も容易であり、補修
費用としても殆ど掛からないので、設備費が低廉化でき
るうえ、滓掻き効率も向上し、滓掻き時間の短縮も計れ
る。As described above, according to the present invention, from the state of rough scratching, after the pot is undulated, the work of adding the heat retaining agent is not performed, and the heat retaining agent and the scraping work can be continuously performed. You can do it. In addition, in order to prevent heat dissipation in the next step, a heat insulating agent is put in, but since this work can be reduced or deleted, the work time can be shortened and the temperature drop of the molten metal can be prevented. The process margin after that can be secured, and further,
Since the surface of the molten metal is blown by air, the temperature of the molten metal is not lowered so much. In addition, the equipment cost is very low, the deterioration is small and the repair is easy, and the repair cost is almost insignificant, so the equipment cost can be reduced, the scraping efficiency is improved, and the scraping time is shortened. Can be measured.
【図１】本発明の一実施形態に係る除滓装置の要部構成
を示す側面図である。FIG. 1 is a side view showing a main configuration of a slag removing apparatus according to an embodiment of the present invention.
【図２】本発明の一実施形態に係る除滓装置による滓吹
き寄せの進行状況を示す説明図である。FIG. 2 is an explanatory diagram showing the progress of slag sweeping by the slag removing apparatus according to the embodiment of the present invention.
【図３】本発明の他の実施形態に係る除滓装置の要部構
成を示す側面図である。FIG. 3 is a side view showing a main configuration of a slag removing device according to another embodiment of the present invention.
【図４】本発明の他の実施形態に係る除滓装置による滓
吹き寄せの進行状況を示す説明図である。FIG. 4 is an explanatory diagram showing a progress situation of slag blowing by a slag removing device according to another embodiment of the present invention.
【図５】滓を機械的に掻き寄せて凡そ排出した状態を示
す説明図である。FIG. 5 is an explanatory diagram showing a state in which a slag is mechanically scraped and is approximately discharged.
【図６】従来の除滓装置全体取り合い関係を示す側面図
である。FIG. 6 is a side view showing a general connection relationship of a conventional slag removing device.
【図７】除滓装置の滓掻き板部の側面を示す拡大図であ
る。FIG. 7 is an enlarged view showing a side surface of a slag scraping plate portion of the slag removing device.
１ 溶融金属容器（鍋） ２ 滓排出口 ３ 溶融金属 ４ 滓 ５ 鍋傾転装置 ６ 排滓鍋 ８ 滓掻き装置 ９ 掻き板支持アーム １０ 掻き板 １１ パイプノズル １２ 保温剤供給ホッパー １３ 保温剤 １４ エアー供給配管 DESCRIPTION OF SYMBOLS 1 Molten metal container (pot) 2 Slag discharge port 3 Molten metal 4 Slag 5 Pot tilting device 6 Dust pan 8 Slag scraping device 9 Scraping plate support arm 10 Scratching plate 11 Pipe nozzle 12 Heat retaining agent supplying hopper 13 Heat retaining agent 14 Air Supply piping
───────────────────────────────────────────────────── フロントページの続き (72)発明者 小平 悟史 東京都千代田区丸の内一丁目１番２号 日 本鋼管株式会社内 (72)発明者 三浦 進 広島県福山市鋼管町１ 鋼管鉱業株式会社 福山事業所内 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Satoshi Kodaira Satoshi Kodaira 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nihon Steel Pipe Co., Ltd. (72) Inventor Susumu Miura 1 Steel Pipe Town, Fukuyama City, Hiroshima Prefecture In the office
Claims (4)
する滓を、往復運動する掻き板により掻き出す除滓装置
において、該掻き板の上部に気体噴射ノズルを併設し、
該気体噴射ノズルより噴射された気体の流れにより前記
滓を寄せ集めることを特徴とする除滓装置。1. A slag removing device for scraping off a slag floating on the surface of a molten metal in a molten metal container by means of a reciprocating scraping plate, wherein a gas injection nozzle is provided above the scraping plate.
A slag removing device characterized in that the slag is gathered together by a flow of gas injected from the gas injection nozzle.
より変更自在であることを特徴とする請求項１記載の除
滓装置。2. The slag removing device according to claim 1, wherein the injection direction of the gas injection nozzle can be changed by remote control.
する滓を、往復運動する掻き板により掻き出す除滓装置
において、該掻き板の上部に気体噴射ノズルを併設し、
該気体噴射ノズルより噴射された気体の流れにより前記
滓を寄せ集めると共に、保温材供給装置を設けて滓を寄
せ集め中または寄せ集め直後に、肌湯面に保温剤を供給
することを特徴とする除滓装置。3. A slag removing device for scraping off a slag floating on the surface of a molten metal in a molten metal container by means of a reciprocating scraping plate, wherein a gas injection nozzle is provided above the scraping plate.
In addition to collecting the slag by the flow of the gas injected from the gas injection nozzle, a heat insulating material supply device is provided to supply the heat insulating agent to the surface of the skin bath during or immediately after collecting the slag. Slag removing device.
傍に供給することを特徴とする請求項３記載の除滓装
置。4. The slag removing device according to claim 3, wherein the heat retaining agent is supplied to the vicinity of the scraping plate by a gas injection nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19158795A JPH08243730A (en) | 1995-01-13 | 1995-07-27 | Device for removing slag |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7-4464 | 1995-01-13 | ||
| JP446495 | 1995-01-13 | ||
| JP19158795A JPH08243730A (en) | 1995-01-13 | 1995-07-27 | Device for removing slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08243730A true JPH08243730A (en) | 1996-09-24 |
Family
ID=26338233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19158795A Pending JPH08243730A (en) | 1995-01-13 | 1995-07-27 | Device for removing slag |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08243730A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100432042B1 (en) * | 2000-11-13 | 2004-05-20 | 주식회사 포스코 | Apparatus for excluding slag |
| FR2852022A1 (en) * | 2003-03-04 | 2004-09-10 | Ile Barbe Davene Soc Civ | Scouring of slag from the top of a bath of molten metal in a metallurgical vessel involves using a wave of water cooled air with an associated maneuvering device as the raking device |
| WO2006016202A1 (en) * | 2004-08-09 | 2006-02-16 | Société Civile Barbé-Davené | Metallurgical reactor deslagging blade |
| JP2006274414A (en) * | 2005-03-30 | 2006-10-12 | Jfe Steel Kk | Device for removing dross within snout |
| KR100815784B1 (en) * | 2001-10-31 | 2008-03-20 | 주식회사 포스코 | Apparatus for clearing slag of ladle |
| JP2013053363A (en) * | 2011-09-06 | 2013-03-21 | Kobe Steel Ltd | Method for removing slag from ladle |
| CN104759613A (en) * | 2015-04-15 | 2015-07-08 | 中冶南方工程技术有限公司 | Molten iron tank slag removal system and method |
| JPWO2017135074A1 (en) * | 2016-02-04 | 2018-06-28 | 新日鐵住金株式会社 | Additive charging method for molten metal and additive charging device for molten metal |
| CN112091206A (en) * | 2019-05-31 | 2020-12-18 | 宝山钢铁股份有限公司 | Safe and reliable molten iron pretreatment automatic slag skimming method and system |
-
1995
- 1995-07-27 JP JP19158795A patent/JPH08243730A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100432042B1 (en) * | 2000-11-13 | 2004-05-20 | 주식회사 포스코 | Apparatus for excluding slag |
| KR100815784B1 (en) * | 2001-10-31 | 2008-03-20 | 주식회사 포스코 | Apparatus for clearing slag of ladle |
| FR2852022A1 (en) * | 2003-03-04 | 2004-09-10 | Ile Barbe Davene Soc Civ | Scouring of slag from the top of a bath of molten metal in a metallurgical vessel involves using a wave of water cooled air with an associated maneuvering device as the raking device |
| WO2006016202A1 (en) * | 2004-08-09 | 2006-02-16 | Société Civile Barbé-Davené | Metallurgical reactor deslagging blade |
| JP2006274414A (en) * | 2005-03-30 | 2006-10-12 | Jfe Steel Kk | Device for removing dross within snout |
| JP2013053363A (en) * | 2011-09-06 | 2013-03-21 | Kobe Steel Ltd | Method for removing slag from ladle |
| CN104759613A (en) * | 2015-04-15 | 2015-07-08 | 中冶南方工程技术有限公司 | Molten iron tank slag removal system and method |
| JPWO2017135074A1 (en) * | 2016-02-04 | 2018-06-28 | 新日鐵住金株式会社 | Additive charging method for molten metal and additive charging device for molten metal |
| CN112091206A (en) * | 2019-05-31 | 2020-12-18 | 宝山钢铁股份有限公司 | Safe and reliable molten iron pretreatment automatic slag skimming method and system |
| CN112091206B (en) * | 2019-05-31 | 2021-07-16 | 宝山钢铁股份有限公司 | Safe and reliable molten iron pretreatment automatic slag skimming method and system |
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