JPH0456715A - Heating device for vacuum degassing vessel - Google Patents
Heating device for vacuum degassing vesselInfo
- Publication number
- JPH0456715A JPH0456715A JP16678790A JP16678790A JPH0456715A JP H0456715 A JPH0456715 A JP H0456715A JP 16678790 A JP16678790 A JP 16678790A JP 16678790 A JP16678790 A JP 16678790A JP H0456715 A JPH0456715 A JP H0456715A
- Authority
- JP
- Japan
- Prior art keywords
- burner
- degassing tank
- degassing vessel
- heating
- heating device
- 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
- 238000010438 heat treatment Methods 0.000 title claims abstract description 30
- 238000009849 vacuum degassing Methods 0.000 title claims abstract description 16
- 238000007872 degassing Methods 0.000 claims abstract description 47
- 238000002485 combustion reaction Methods 0.000 abstract description 17
- 239000002184 metal Substances 0.000 abstract description 13
- 229910052751 metal Inorganic materials 0.000 abstract description 13
- 239000002737 fuel gas Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- 239000002912 waste gas Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 19
- 229910000831 Steel Inorganic materials 0.000 description 11
- 239000010959 steel Substances 0.000 description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 8
- 239000001301 oxygen Substances 0.000 description 8
- 229910052760 oxygen Inorganic materials 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 239000000446 fuel Substances 0.000 description 5
- 229910052717 sulfur Inorganic materials 0.000 description 4
- 239000010953 base metal Substances 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007670 refining Methods 0.000 description 3
- 230000003028 elevating effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical class [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- QVGXLLKOCUKJST-NJFSPNSNSA-N oxygen-18 atom Chemical compound [18O] QVGXLLKOCUKJST-NJFSPNSNSA-N 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、製鋼工場において、溶鋼の２次精錬を行うた
めの吸上方式のＤＨまたはＲＨ式真空脱ガス装置に係わ
り、特に真空脱ガス槽が溶鋼の処理を中断している間に
該真空脱ガス槽の内部を加熱するために使用する真空脱
ガス槽の加熱装置に関するものである。Detailed Description of the Invention <Industrial Application Field> The present invention relates to a suction type DH or RH type vacuum degassing device for performing secondary refining of molten steel in a steel factory, and particularly relates to a vacuum degassing device for performing secondary refining of molten steel. The present invention relates to a heating device for a vacuum degassing tank used to heat the inside of the vacuum degassing tank while the tank is suspending processing of molten steel.
〈従来の技術〉
真空脱ガス装置は、溶鋼の２次精錬に際し、真空脱ガス
槽（以下脱ガス槽）の内部温度が低いと溶鋼の処理が困
難になることと、地金の付着が激しくなることから、た
とえ脱ガス槽が処理中断中（以下非処理時という）でも
内部を加熱して保温するとともに付着、残留している地
金を溶解して除去する必要があり、また耐火物積換え等
の補修作業の後にも所定の温度まで昇温する必要がある
。<Prior art> Vacuum degassing equipment is used to process molten steel during secondary refining of molten steel. Therefore, even if the degassing tank is in a state where processing is interrupted (hereinafter referred to as non-processing time), it is necessary to heat the inside to keep it warm, as well as melt and remove any adhered or remaining metal. Even after repair work such as replacement, it is necessary to raise the temperature to a predetermined temperature.
この加熱装置として、例えば第３図に示す如きものがあ
る。第３図（ａ）は、脱ガス槽Ａの下部に設けた２つの
浸漬管Ｓ、Ｓの下方にそれぞれ下部バーナＢ、Ｂを配置
し、該バーナＢ、Ｂから燃料ガスＧと燃焼用空気＾ｉｒ
を脱ガス槽Ａ内に導入して燃焼させ、脱ガス槽Ａ内を保
温または予熱するものである。この場合の燃焼排ガスは
煙道りから排出する。As this heating device, there is one shown in FIG. 3, for example. In Fig. 3(a), lower burners B and B are arranged below two immersion pipes S and S provided at the lower part of the degassing tank A, respectively, and fuel gas G and combustion air are supplied from the burners B and B. ＾ir
is introduced into the degassing tank A and combusted, and the inside of the degassing tank A is kept warm or preheated. In this case, the combustion exhaust gas is discharged from the flue.
また、第３図ｂ）に示すものは特開平２−７７５１７号
により開示されたものであり、脱ガス槽Ａ上部の煙道り
に、バーナ台車ＢＣに積載したバーナＢを挿入して燃料
を燃焼させ、脱ガス槽Ａ内を加熱するものである。この
場合の燃焼排ガスは浸漬管Ｓ、Ｓを介して、該浸漬管Ｓ
、Ｓが挿入される地金ボックスＥ内に放出される。The system shown in Fig. 3b) is disclosed in Japanese Patent Application Laid-Open No. 2-77517, in which a burner B loaded on a burner truck BC is inserted into the flue above the degassing tank A to supply fuel. It burns and heats the inside of the degassing tank A. In this case, the combustion exhaust gas is passed through the immersion pipes S, S.
, S is released into the bullion box E into which it is inserted.
そして、地金ボックスＥからは排ガスダクトＤ′により
装置外に導かれて放出される。また、地金ボックスＥに
は脱ガス槽Ａ内に付着した地金Ｍが落下堆積するので、
台車Ｃにより該地金ボックスを搬出し所定の場所で排出
する。Then, from the metal box E, the gas is guided to the outside of the apparatus through the exhaust gas duct D' and discharged. In addition, since the bullion M attached in the degassing tank A falls and accumulates in the bullion box E,
The bullion box is carried out by the cart C and discharged at a predetermined location.
さらにまた、第３図（Ｃ）に示したものは特開平１−３
１９６２５号により開示された地金Ｍの除去方法で、脱
ガス槽Ａの上部にバーナＢ１を挿入して不足する酸素雰
囲気中で燃料を燃焼させるとともに、脱ガス槽Ａの下部
からもバーナＢｔに酸素を導入し、前記燃料の未燃燐分
を燃焼させて地金Ｍを溶解除去する。Furthermore, what is shown in FIG. 3(C) is JP-A-1-3
In the method for removing metal M disclosed in No. 19625, burner B1 is inserted into the upper part of degassing tank A to burn fuel in an oxygen-deficient atmosphere, and burner Bt is also inserted from the lower part of degassing tank A. Oxygen is introduced to burn the unburned phosphorus in the fuel and dissolve and remove the metal M.
〈発明が解決しようとする課題〉
前記第３図（ａ）に示すものにあっては、浸漬管Ｓとバ
ーナＢとの間の隙間から冷風が侵入するので熱効率が悪
く、脱ガス槽Ａ内を８００〜１０００°Ｃ程度にしか昇
温することができない。従って、予熱や保温の効果が得
られず、次に処理する溶鋼の温度低下を免れることがで
きない、まして地金を溶解除去することは不可能である
。<Problems to be solved by the invention> In the case shown in FIG. can only be heated to about 800-1000°C. Therefore, the effects of preheating and heat retention cannot be obtained, and the temperature of the molten steel to be processed next cannot be avoided, and furthermore, it is impossible to melt and remove the base metal.
また第３図（ｂ）に示す装置では、煙道りにバーナＢを
挿入するため煙道りの近辺のみが高温となり易く、特に
地金付着の激しい脱ガス槽Ａ下部の加熱が不足し、地金
Ｍの除去を十分行うことができない。In addition, in the apparatus shown in FIG. 3(b), since the burner B is inserted into the flue, only the vicinity of the flue tends to become high temperature, and the lower part of the degassing tank A, where there is particularly heavy metal adhesion, is insufficiently heated. The metal M cannot be removed sufficiently.
さらに第３図（Ｃ）に示す方法は、上部のバーナＢ１に
よる未燃焼燃料を、付着した地金Ｍの下方に設けたバー
ナＢ、から酸素を吹き込み燃焼させるものであるが、比
重が空気より重い酸素は下に流れ未燃焼ガスと十分混合
しないため不完全燃焼上なり、−酸化炭素を発生する恐
れがあるばかりでなく熱効率が悪くなる。Furthermore, in the method shown in FIG. 3(C), the unburned fuel produced by the upper burner B1 is combusted by blowing oxygen into it from the burner B installed below the adhered metal M. Heavy oxygen flows downward and does not mix sufficiently with unburned gas, resulting in incomplete combustion, which not only poses a risk of generating carbon oxides but also reduces thermal efficiency.
また、下方に設けたバーナＢｇの位置（よ固定されたも
のになるため、脱ガス槽Ａ内の任意の位置を重点的に加
熱することができない。Further, since the position of the burner Bg provided below is fixed, it is not possible to intensively heat any arbitrary position within the degassing tank A.
以上の如〈従来の技術は、いずれも脱ガス槽Ａ内の加熱
が十分にできなく、特に地金付着の激しい下部の加熱が
不足するものであり改善が望まれていた。As described above, all of the conventional techniques are unable to heat the inside of the degassing tank A sufficiently, and in particular, the heating of the lower part where the base metal is heavily deposited is insufficient, and an improvement has been desired.
また、脱ガス槽内の耐火物を積換えた際の予熱は、１５
０°Ｃ程度の低温で一定時間保持する必要があるが、こ
の予熱に対しても前記従来の技術ではバーナの取付位置
、ならびにその容量が固定的であるため、所定の温度で
しかも脱ガス槽内を満遍なく加熱することは困難であっ
た。In addition, the preheating time when reloading the refractories in the degassing tank is 15
It is necessary to maintain the temperature at a low temperature of about 0°C for a certain period of time, but in the conventional technology mentioned above, the installation position of the burner and its capacity are fixed. It was difficult to heat the inside evenly.
本発明は、前述の如き従来の技術の課題を解決し脱ガス
槽内を所定の温度で、しかも満遍なく加熱できる真空脱
ガス槽の加熱装置を提供することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide a heating device for a vacuum degassing tank that can solve the problems of the conventional techniques as described above and can evenly heat the inside of the degassing tank to a predetermined temperature.
〈課題を解決するための手段〉
本発明は、脱ガス槽上部から可燃性ガスを用いて脱ガス
槽内部を加熱する真空脱ガス槽の加熱装置において、前
記脱ガス槽の上部に昇降自在な加熱用バーナを挿脱可能
に配置することにより、前記従来の技術の課題を解決し
、さらに、前記加熱バーナを加熱容量の異なる２種類以
上のバーナとすることにより一層の効果を得ることがで
きた。<Means for Solving the Problems> The present invention provides a heating device for a vacuum degassing tank that heats the inside of the degassing tank using combustible gas from the top of the degassing tank. By arranging the heating burner so that it can be inserted and removed, the problems of the conventional technology can be solved, and further effects can be obtained by using two or more types of heating burners with different heating capacities. Ta.
〈作 用〉
本発明の真空脱ガス槽の加熱装置は、脱ガス槽の上部に
可燃性ガスを燃焼する昇降自在な加熱バーナを挿脱可能
に配置し、該バーナを必要に応じて脱ガス槽内に挿入し
、脱ガス槽内の所要位置に設定して加熱することができ
、加熱終了時には脱ガス槽から取出すことができる。<Function> The heating device for a vacuum degassing tank of the present invention has a heating burner that burns combustible gas and can be moved up and down removably arranged in the upper part of the degassing tank, and the burner can be used for degassing as needed. It can be inserted into the tank, set at a desired position in the degassing tank, and heated, and can be taken out from the degassing tank when heating is completed.
また、前記バーナは加熱容量の異なる２種類以上のもの
としであるため、必要な加熱容量のバーナを選択的に使
用することができる。Further, since the burners are of two or more types having different heating capacities, it is possible to selectively use a burner having a required heating capacity.
〈実施例〉
第１図および第２図は本発明の実施例を示す図面で、第
１図は全体構成の説明図、第２図はバーナ昇降手段の説
明図である。<Embodiment> FIGS. 1 and 2 are drawings showing an embodiment of the present invention, in which FIG. 1 is an explanatory diagram of the overall configuration, and FIG. 2 is an explanatory diagram of a burner lifting means.
第１図においてＩＯＡは主バーナ、ＩＯＢは補助バーナ
であり、また１は燃料ガスの配管、２は富化用酸素の配
管、３は燃焼用空気の配管を示す、ここで、酸素配管２
は富化を必要とするときのみ設置する。４ａ、４ｂ、４
Ｃは流量調整弁でいずれも遠隔操作可能となっている。In FIG. 1, IOA is the main burner, IOB is the auxiliary burner, 1 is the fuel gas piping, 2 is the enrichment oxygen piping, and 3 is the combustion air piping. Here, the oxygen piping 2
is installed only when enrichment is required. 4a, 4b, 4
C is a flow rate adjustment valve, both of which can be remotely controlled.
また５は主バーナ１０Ａに各配管１．２．３を接続する
ためのフレキシブルホースである。Moreover, 5 is a flexible hose for connecting each piping 1.2.3 to the main burner 10A.
さらに１’、２’、３’はそれぞれ補助バーナ１０Ｂ用
の燃料ガス配管、酸素配管、燃焼用空気配管を示し、４
ａ’、４ｂ’、４ｃ’はそれぞれの流量調整弁であり、
６はそれぞれの配管と補助バーナＩＯＢを接続するため
のフレキシブルホースである。Further, 1', 2', and 3' respectively indicate fuel gas piping, oxygen piping, and combustion air piping for the auxiliary burner 10B;
a', 4b', and 4c' are respective flow rate adjustment valves,
6 is a flexible hose for connecting each pipe to the auxiliary burner IOB.
この第１図では図示省略しであるが、各バーナ１０Ａ、
ＩＯＢは第２図に例示する如き昇降手段により昇降自在
に支持されている。Although not shown in FIG. 1, each burner 10A,
The IOB is supported so as to be freely raised and lowered by means of raising and lowering as illustrated in FIG.
第２図において、１１はガイドポールでこの例ではＨ形
鋼を使用し、作業床Ｆ上を走行する台車１７上に立設し
である。そして１２は主バーナＩＯＡの支持部材であり
、前記ガイドボール１１であるＨ形鋼のフランジ内面を
転勤するコロ１３（合計８個）によりガイドされて昇降
する。すなわち、支持部材１２は電動ドラム１６に巻付
けられたワイヤーロープ１４をガイドシーブ１５．１５
を介して巻取り、巻戻すことにより主バーナＩＯＡとと
もに昇降可能となっている。In FIG. 2, a guide pole 11 is made of H-beam steel in this example, and is erected on a cart 17 that runs on a work floor F. Reference numeral 12 denotes a support member for the main burner IOA, which moves up and down while being guided by rollers 13 (eight in total) that move around the inner surface of the flange of the H-section steel, which is the guide ball 11. That is, the support member 12 guides the wire rope 14 wound around the electric drum 16 through the guide sheave 15.15.
By winding up and unwinding the main burner IOA, it can be moved up and down together with the main burner IOA.
なお、バーナの昇降手段はこの例にこだわるものではな
く、また、その移動も例えば水平に旋回するスイング方
式等が使用できるものである。Note that the means for elevating and lowering the burner is not limited to this example, and for example, a swing method for horizontally rotating can be used for the movement.
また、この第２図には主バーナＩＯＡのみを示したが、
補助バーナＩＯＢも同様に構成した昇降手段をこの台車
１７に積載しである。Also, although only the main burner IOA is shown in this Figure 2,
The auxiliary burner IOB is also loaded with a similarly configured elevating means on this truck 17.
このように構成された主バーナＩＯＡおよび、または補
助バーナＩＯＢは第１図に示すように脱ガス槽Ａ内に挿
入後、所定の位置に降ろされて点火される。The main burner IOA and/or the auxiliary burner IOB configured in this manner are inserted into the degassing tank A as shown in FIG. 1, and then lowered to a predetermined position and ignited.
そして燃焼排ガスは浸漬管Ｓを介して地金ボックス２０
内に放出される。この地金ボックス２０はこの例では上
部フード２１と下部の地金容器２１′ とに２分割され
ており、図示省略した脱ガス槽Ａの下部槽交換台車に積
載されて移動、および昇降するが、脱ガス槽Ａを加熱し
ない非使用時は、上部フード２１はこの近傍の作業床下
面に吊下げられて待機し、地金容器２１′のみが下部槽
交換台車により装置外に搬送されて地金を排出するよう
になっている。Then, the combustion exhaust gas is passed through the dip pipe S to the metal box 20.
released within. In this example, the bullion box 20 is divided into two parts, an upper hood 21 and a lower bullion container 21', and is loaded onto a lower tank exchange cart of the degassing tank A (not shown) and moved and raised and lowered. When the degassing tank A is not heated and is not in use, the upper hood 21 is suspended from the underside of the work floor near this area and stands by, and only the metal container 21' is transported outside the equipment by the lower tank exchange cart and placed on the ground. It is supposed to drain money.
さらに、２２は燃焼排ガスのダクトであり燃焼排ガスは
該ダクト２２により屋外まで導かれて放散される。Furthermore, 22 is a duct for combustion exhaust gas, and the combustion exhaust gas is guided to the outdoors through the duct 22 and dissipated.
この例では、排ガスダクト２２の途中にエジェクタ２３
を設け、送風機２４により昇圧された空気をエジェクタ
配管２５を介してエジェクタ２３内に矢印Ｘ方向に吹込
んで燃焼排ガスを吸引するようにしである。In this example, an ejector 23 is installed in the middle of the exhaust gas duct 22.
is provided, and the air pressurized by the blower 24 is blown into the ejector 23 in the direction of arrow X through the ejector pipe 25 to suck the combustion exhaust gas.
また、２６は燃焼排ガスと燃焼用各ガス（燃料、酸素、
空気）との熱交換を行う熱交換器で、燃焼排ガスの顕熱
を回収して加熱装置の熱効率を高めている。In addition, 26 is a combustion exhaust gas and each combustion gas (fuel, oxygen,
This is a heat exchanger that exchanges heat with air) and recovers sensible heat from combustion exhaust gas to increase the thermal efficiency of the heating device.
なお、熱交換器２６を用いない場合、排ガスダクト２２
から排ガス管３ａを分岐させて燃焼用空気の代わりに使
用することもできる。この場合、図示省略したが必要に
応じて配管３ａの途中に昇圧用の送風機を設置する。Note that if the heat exchanger 26 is not used, the exhaust gas duct 22
It is also possible to branch off the exhaust gas pipe 3a and use it instead of combustion air. In this case, although not shown in the drawings, a pressure increasing blower is installed in the middle of the piping 3a as necessary.
次に、主バーナＩＯＡと補助バーナＩＯＢの使用につい
て説明すると、先ず脱ガス槽内耐火物を積換えた後のよ
うに所定時間（例えば２４時間）の予熱が必要な場合は
、補助バーナＩＯＢのみを脱ガス槽Ａ内に挿入し、必要
であれば昇降動作をさせながら脱ガス槽内が約１５０°
Ｃになるように加熱し、保持することにより耐火物中の
水分を除去する。このとき、脱ガス槽内の温度が余り高
くなりすぎると図示省略した冷風管から脱ガス槽内に冷
風を吹込む。Next, to explain the use of the main burner IOA and the auxiliary burner IOB, first, when preheating for a predetermined period of time (for example, 24 hours) is required, such as after reloading refractories in the degassing tank, only the auxiliary burner IOB is used. Insert it into the degassing tank A, and move it up and down if necessary until the inside of the degassing tank is at about 150°.
The water in the refractory is removed by heating it to a temperature of C and holding it. At this time, if the temperature inside the degassing tank becomes too high, cold air is blown into the degassing tank from a cold air pipe (not shown).
予熱完了後、主バーナＩＯＡを脱ガス槽Ａ内に挿入し、
脱ガス槽全体が約１４５０°Ｃ程度になるように、必要
に応じて核上バーナＩＯＡを昇降させながら満遍なく加
熱する。After preheating is completed, insert the main burner IOA into the degassing tank A,
The nuclear burner IOA is raised and lowered as necessary to heat the entire degassing tank evenly to about 1450°C.
この場合、脱ガス槽内の温度が８００°Ｃ以下では主バ
ーナＩＯＡの火炎が安定しないため、補助バーナＩＯＢ
は燃焼させておく方が望ましい。In this case, if the temperature inside the degassing tank is below 800°C, the flame of the main burner IOA will not be stable, so the auxiliary burner IOB
It is preferable to let it burn.
脱ガス槽Ａが非処理中の保温も同様にして行うが、この
場合は脱ガス槽内の温度がすでに高温であるため、主バ
ーナＩＯＡのみを使用する。ただし、主バーナＩＯＡの
みでは加熱容量が不足する場合は補助バーナＪＯＢも使
用することはもちろんで、また、補助バーナＩＯＢの非
使用時は巻上げて脱ガス槽外に出しておく。Heat retention while the degassing tank A is not being processed is carried out in the same way, but in this case, only the main burner IOA is used because the temperature inside the degassing tank is already high. However, if the heating capacity is insufficient with the main burner IOA alone, the auxiliary burner JOB may of course be used, and when the auxiliary burner IOB is not in use, it is rolled up and placed outside the degassing tank.
主バーナＩＯＡおよび補助バーナＩＱＢともに使用が終
われば、それぞれ巻上げた後台車１７を移動させて他の
作業の邪魔にならない位置で待機させる。When the use of both the main burner IOA and the auxiliary burner IQB is finished, the trolley 17 after hoisting each is moved and placed on standby at a position where it does not interfere with other work.
本発明による脱ガス槽の加熱装置を使用した場合、操業
１回あたりの地金付着量はＯ，ＯＳ〜０．１ｔとなった
が、これは従来の第３図（ａ）に示すものの約０．６ｔ
に比較すると大幅に減少させ得たことが判る。また付着
した地金もほとんど除去することができた。When the heating device for the degassing tank according to the present invention was used, the amount of metal deposited per operation was ~0.1 t, which was about the same as the conventional one shown in Figure 3 (a). 0.6t
It can be seen that this can be significantly reduced compared to . It was also possible to remove most of the attached metal.
なお真空脱ガス装置としては、１槽の脱ガス槽を間欠使
用するものと、２槽の脱ガス槽を処理位置と待機位置に
交互に入れ換えて使用するものがあるが、本発明による
真空脱ガス槽の加熱装置は、１槽方式の場合は処理位置
で、２検力式の場合は待機位置でそれぞれ使用が可能で
ある。There are two types of vacuum degassing equipment: one that uses one degassing tank intermittently and one that uses two degassing tanks that are alternately switched between a processing position and a standby position. The gas tank heating device can be used at the processing position in the case of a single tank system, and at the standby position in the case of a two-pot system.
また、加熱バーナは２木に限らず必要に応して増加する
こともできる。Further, the number of heating burners is not limited to two, but can be increased as needed.
〈発明の効果〉
以上の如く本発明によれば、真空脱ガス槽内を低温から
高温まで、しかも脱ガス槽内を満遍なく加熱することが
できるため、次の溶鋼の処理において溶鋼の温度低下が
少なく、地金の付着も少ない。<Effects of the Invention> As described above, according to the present invention, the inside of the vacuum degassing tank can be heated evenly from low to high temperatures, and therefore the temperature of the molten steel can be reduced in the next treatment of molten steel. There is also less metal adhesion.
さらに脱ガス槽内に付着、残留した地金も脱ガス槽の加
熱中に十分除去することができる。Furthermore, the base metal deposited and remaining in the degassing tank can also be sufficiently removed during heating of the degassing tank.
第１図および第２図は本発明による真空脱ガス槽の加熱
装置の実施例を示す図面で、第１ｔ！Ｉは全体構成の説
明図、第２図はバーナ昇降手段の説明図であり、第３図
は従来の技術の説明図である。
１・・・燃料ガス配管、 ２・・・富化用酸素配管、３
・・・燃焼用空気管、 ３′・・・燃焼排ガス分岐管、
４・・・流量調整弁、
５．６・・・フレキシブルホース、
１０Ａ・・・主バーナ、 ＩＯＢ・・・補助バーナ、
１】・・・ガイドポスト、 １２・・・支持部材、１３
・・・コロ、 １４・・・ワイヤーロープ、
１５・・・ガイドシーブ、 １６・・・電動ドラム、１
７・・・台車、 ２０・・・地金ボックス、
２１・・・上部フード、 ２１′・・・地金容器、２
２・・・燃焼排ガスダクト、
２３・・・エジェクタ、 ２４・・・送風機、２５・
・・エジェクタ配管、２６・・・熱交換器、Ａ・・・脱
ガス槽、 Ｓ・・・浸漬管。
第１図1 and 2 are drawings showing an embodiment of a heating device for a vacuum degassing tank according to the present invention. I is an explanatory diagram of the overall configuration, FIG. 2 is an explanatory diagram of burner lifting means, and FIG. 3 is an explanatory diagram of a conventional technique. 1... Fuel gas piping, 2... Oxygen enrichment piping, 3
...Combustion air pipe, 3'...Combustion exhaust gas branch pipe,
4...Flow rate adjustment valve, 5.6...Flexible hose, 10A...Main burner, IOB...Auxiliary burner,
1]...Guide post, 12...Supporting member, 13
...Koro, 14...Wire rope,
15... Guide sheave, 16... Electric drum, 1
7... Trolley, 20... Bullion box,
21... Upper hood, 21'... Bullion container, 2
2... Combustion exhaust gas duct, 23... Ejector, 24... Blower, 25...
... Ejector piping, 26... Heat exchanger, A... Degassing tank, S... Soaking tube. Figure 1
Claims (2)
部を加熱する真空脱ガス槽の加熱装置において、前記脱
ガス槽の上部に昇降自在な加熱用バーナを挿脱可能に配
置したことを特徴とする真空脱ガス槽の加熱装置。(1) In a heating device for a vacuum degassing tank that heats the inside of the degassing tank using flammable gas from the top of the degassing tank, a heating burner that can be raised and lowered is removably arranged at the top of the degassing tank. A heating device for a vacuum degassing tank characterized by:
バーナとしたことを特徴とする特許請求の範囲第１項記
載の真空脱ガス槽の加熱装置。(2) The heating device for a vacuum degassing tank according to claim 1, wherein the heating burner is two or more types of burners having different heating capacities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16678790A JPH0456715A (en) | 1990-06-27 | 1990-06-27 | Heating device for vacuum degassing vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16678790A JPH0456715A (en) | 1990-06-27 | 1990-06-27 | Heating device for vacuum degassing vessel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0456715A true JPH0456715A (en) | 1992-02-24 |
Family
ID=15837669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16678790A Pending JPH0456715A (en) | 1990-06-27 | 1990-06-27 | Heating device for vacuum degassing vessel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0456715A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001086007A1 (en) * | 1998-12-21 | 2001-11-15 | Nippon Steel Corporation | Ladle refining device and ladle refining method using it |
-
1990
- 1990-06-27 JP JP16678790A patent/JPH0456715A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001086007A1 (en) * | 1998-12-21 | 2001-11-15 | Nippon Steel Corporation | Ladle refining device and ladle refining method using it |
| US6666902B1 (en) | 2000-05-12 | 2003-12-23 | Nippon Steel Corporation | Ladle refining apparatus and ladle refining method using it |
| KR100455977B1 (en) * | 2000-05-12 | 2004-11-08 | 신닛뽄세이테쯔 카부시키카이샤 | Ladle refining device and ladle refining method using it |
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