JPS6138757Y2 - - Google Patents
Info
- Publication number
- JPS6138757Y2 JPS6138757Y2 JP1982188299U JP18829982U JPS6138757Y2 JP S6138757 Y2 JPS6138757 Y2 JP S6138757Y2 JP 1982188299 U JP1982188299 U JP 1982188299U JP 18829982 U JP18829982 U JP 18829982U JP S6138757 Y2 JPS6138757 Y2 JP S6138757Y2
- Authority
- JP
- Japan
- Prior art keywords
- burner
- gas
- air
- discharge port
- discharge ports
- 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
Links
- 238000010438 heat treatment Methods 0.000 claims description 19
- 238000005192 partition Methods 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 3
- 238000003892 spreading Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 33
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000009529 body temperature measurement Methods 0.000 description 5
- 238000009749 continuous casting Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000011449 brick Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000036284 oxygen consumption Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Landscapes
- Pre-Mixing And Non-Premixing Gas Burner (AREA)
- Continuous Casting (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Description
【考案の詳細な説明】
本考案は溶融金属用容器、例えば製鋼用の鍋，
連鋳タンデイツシユ等を加熱する装置に関する。[Detailed description of the invention] This invention is a container for molten metal, such as a ladle for steel manufacturing.
This invention relates to a device for heating a continuous casting tundish, etc.
以下連鋳用タンデイツシユについて説明する。 The tundish for continuous casting will be explained below.
従来から連鋳タンデイツシユの加熱は、通常コ
ークス炉ガスを燃料とするバーナによつて行われ
ていた。このように、溶鋼注入前に、タンデイツ
シユを加熱しておくと、溶鋼の放熱が少なく、従
つて注入する溶鋼温度を許容範囲内で極力低くす
ることができ、これにより転炉での酸素原単位，
レンガ原単位等を低減させることができ、且つ低
温鋳造により、良品質の鋳片が得られるという利
点がある。 Conventionally, continuous casting tandates have been heated by burners that typically use coke oven gas as fuel. In this way, by heating the tandate before pouring molten steel, the heat radiation of the molten steel is reduced, and the temperature of the molten steel injected can be kept as low as possible within the allowable range, thereby reducing the oxygen consumption rate in the converter. ，
It has the advantage that brick consumption can be reduced, and high-quality slabs can be obtained by low-temperature casting.
上記タンデイツシユの加熱温度には許容限界が
あり、スラグの融点が乱1150℃であることから
1100℃程度が上限になり、溶鋼のノズルづまり防
止上から950℃位が下限になる。 There is a permissible limit for the heating temperature of the tundish mentioned above, and the melting point of the slag is 1150℃.
The upper limit is about 1100℃, and the lower limit is about 950℃ to prevent molten steel from clogging the nozzle.
而して、従来は第１図に示すように、ガス供給
配管１５と空気供給配管１６とを備えているバー
ナボデイ１９の下面側に、垂直下方に向つている
ガスノズル１７とその両側に設けてある空気ノズ
ル１８とを配設している加熱装置を用いてタンデ
イツシユを加熱していたが、第２図に示すよう
に、バーナボデイ１９から出る火炎２０による加
熱ガスの流れは、直下に向い直下部Ｈが主として
加熱され、バーナボデイ１９とバーナボデイ１９
間の部分やタンデイツシユの底壁の隅部Ｌは、昇
温がおくれ、温度が直下部に比べて低いという欠
点があつた。従来のバーナボデイで加熱した場合
の温度上昇分布を調査したところ、底部のバーナ
ボデイ直下部と隅部との温度差が100℃以上もつ
いていた。 Conventionally, as shown in FIG. 1, a gas nozzle 17 facing vertically downward and a gas nozzle 17 provided on both sides thereof are provided on the lower surface side of a burner body 19 equipped with a gas supply pipe 15 and an air supply pipe 16. The tundish was heated using a heating device equipped with an air nozzle 18, but as shown in FIG. is mainly heated, burna body 19 and burna body 19
There was a drawback that the temperature rise was delayed in the space between the two and the corner L of the bottom wall of the tundish, and the temperature was lower than that directly below. When we investigated the temperature rise distribution when heating with a conventional burner body, we found that there was a temperature difference of more than 100°C between the bottom of the burner body directly below and the corner.
そのため、バーナボデイ直下での燃焼，発熱を
おさえ、火炎を長炎化して、極力均一加熱に近づ
ける努力をしているが、この長炎化による加熱方
法では、燃焼ガスが未燃焼気味になるため、省エ
ネ上からも作業環境上からも問題がある。 Therefore, efforts are being made to suppress combustion and heat generation directly below the burner body and make the flame as long as possible to achieve as close to uniform heating as possible. This poses problems both in terms of energy conservation and the working environment.
本考案は上述した問題点を解決するためになさ
れたもので、その要旨は、ガス配管１と空気配管
２とを取付けたバーナボデイ５の吐出側に複数の
バーナ吐出部を有する加熱装置であつて、該バー
ナボデイ５の底部中央部に補助バーナガス吐出口
１４を設け、該補助バーナガス吐出口１４の両側
に補助バーナエアー吐出口１３を設け、更にそれ
ぞれの該補助バーナエアー吐出口１３の外側に仕
切板１２のひろがり角度θを加熱面とバーナの位
置関係より任意に設定可能にしたスリツト状のガ
ス吐出口７及びエアー吐出口８を並列かつ交互に
配置した事を特徴とする溶融金属用容器の加熱装
置である。 The present invention has been made to solve the above-mentioned problems, and its gist is a heating device having a plurality of burner discharge parts on the discharge side of a burner body 5 to which a gas pipe 1 and an air pipe 2 are attached. , an auxiliary burner gas outlet 14 is provided at the center of the bottom of the burner body 5, an auxiliary burner air outlet 13 is provided on both sides of the auxiliary burner gas outlet 14, and a partition plate is provided on the outside of each auxiliary burner air outlet 13. Heating of a container for molten metal characterized by slit-shaped gas discharge ports 7 and air discharge ports 8 arranged in parallel and alternately, the spreading angle θ of which can be arbitrarily set according to the positional relationship between the heating surface and the burner. It is a device.
次に本考案装置を第３図〜第５図に示す一実施
例にもとづき説明する。 Next, the device of the present invention will be explained based on an embodiment shown in FIGS. 3 to 5.
第４図は本考案のバーナボデイを底部からみた
下面図であり、第５図イは、本考案のバーナボデ
イの正面図である第３図イのＡ−A′部分断面拡
大図、第５図ロは第４図の吐出口に至る流路説明
用のバーナボデイ断面部分図である。 Fig. 4 is a bottom view of the burner body of the present invention seen from the bottom, Fig. 5 (a) is a partial sectional enlarged view taken along line A-A' of Fig. 3 (a), which is a front view of the burner body of the present invention, and Fig. 5 (b) is a bottom view of the burner body of the invention. 4 is a cross-sectional partial view of the burner body for explaining the flow path leading to the discharge port in FIG. 4. FIG.
本実施例装置は、バーナボデイの底部中央部に
補助バーナガス吐出口１４を設け、該補助バーナ
ガス吐出口１４の両側に補助バーナエアー吐出口
１３を設け、それぞれの該補助バーナエアー吐出
口１３の外側にガス吐出口７を設け、それぞれの
ガス吐出口７の外側にエアー吐出口８を設け、さ
らに同様のガス吐出口７′、エアー吐出口８′をそ
れぞれの外側に設けてある。 The apparatus of this embodiment is provided with an auxiliary burner gas discharge port 14 at the center of the bottom of the burner body, and auxiliary burner air discharge ports 13 provided on both sides of the auxiliary burner gas discharge port 14 on the outside of each of the auxiliary burner air discharge ports 13. A gas discharge port 7 is provided, an air discharge port 8 is provided on the outside of each gas discharge port 7, and a similar gas discharge port 7' and an air discharge port 8' are provided on the outside of each gas discharge port 7.
前記の補助バーナガス吐出口１４，ガス吐出口
７，７′は、それぞれ、第５図イに示す補助バー
ナガス流入口１１，ガス流入口９，９′に連通し
ており、各流入口１１，９，９′はガス配管１に
通じている。 The auxiliary burner gas discharge port 14 and the gas discharge ports 7 and 7' communicate with the auxiliary burner gas inlet 11 and the gas inflow ports 9 and 9', respectively, shown in FIG. , 9' communicate with the gas pipe 1.
同様に、補助バーナエアー吐出口１３，エアー
吐出口８，８′は、それぞれ補助バーナエアー流
入口１１、エアー流入口１０，１０′に連通して
おり、各流入口は空気配管２に通じている。そし
て、ガスとエアーの各流通路は仕切板で仕切つて
あり、ガス吐出口，エアー吐出口に至る通路は、
ガス流入口，エアー流入口から、下方、かつ外方
に向う平行な仕切板１２で区分けしてある。 Similarly, the auxiliary burner air outlet 13 and the air outlets 8 and 8' communicate with the auxiliary burner air inlet 11 and the air inlet 10 and 10', respectively, and each inlet communicates with the air pipe 2. There is. Each gas and air flow path is separated by a partition plate, and the path leading to the gas discharge port and air discharge port is
They are separated by parallel partition plates 12 that face downward and outward from the gas inlet and air inlet.
上述した構成をもつ本実施例装置により、連鋳
タンデイツシユを加熱した結果、ガスとエアーと
のミキシングが良く、火炎長が１ｍと長くなり、
しかも燃焼が良く、火焔が外方に拡がつてタンデ
イツシユの全体をほぼ均一に加熱できた。 As a result of heating the continuous casting tundish with the apparatus of this embodiment having the above-mentioned configuration, the mixing of gas and air was good, and the flame length was as long as 1 m.
Moreover, the combustion was good, and the flame spread outwards, heating the entire tandaisu almost uniformly.
本実施例装置により加熱したタンデイツシユの
各個所の温度測定結果を第６図イに示す。尚第６
図ロ，ハは同図イの各測温箇所○ニ〜○ルを示す説明
図で、ロは側面図、ハは正面図であり、ハに於い
てＡ位置は○ホ，○リの測温点を示し、Ｂ位置は○ホ，
○リを除く他の測温位置を示す。 The temperature measurement results at various locations in the tundish heated by the apparatus of this embodiment are shown in FIG. 6A. The 6th
Figures B and C are explanatory diagrams showing each temperature measurement point ○ni~○ in the same figure A, where B is a side view and C is a front view. Indicates the hot point, B position is ○ho,
○ Indicates other temperature measurement positions except for li.
第６図から、測温点○ニ〜○ヌ間の温度差が小さく
なりタンデイツシユ全体を均一に加熱することが
できるという顕著な効果があることが明らかであ
る。 It is clear from FIG. 6 that there is a remarkable effect that the temperature difference between the temperature measuring points ◯◯◯◯◯◯◯ is small and the entire tundish can be heated uniformly.
上記の実施例において、仕切板１２のひろがり
角度θ（第３図参照）が55゜未満のときは、バー
ナ直下部が主として加熱され、該θが80゜を超え
るときはTD蓋の加熱に熱エネルギーが消費され
て、燃焼ガスの一部は下部までまわりきらずTD
上部から排ガスとなつて逃げ、熱エネルギーの損
失を生じることが判つた。従つて、該θが55゜〜
80゜の範囲にあるように仕切板の傾斜を設定する
のがよい。又、高級鋼化対策として、堰をつける
ことも多く、これらの条件を考慮した均一加熱を
試験実施した結果からこのθの範囲を見出した。 In the above embodiment, when the expansion angle θ of the partition plate 12 (see Fig. 3) is less than 55°, the area directly below the burner is mainly heated, and when the angle θ exceeds 80°, the TD lid is heated. Energy is consumed and some of the combustion gas does not reach the bottom and is TD.
It was found that the gas escaped from the upper part as exhaust gas, causing a loss of thermal energy. Therefore, the θ is 55°~
It is best to set the slope of the partition plate so that it is within an 80° range. In addition, as a measure to improve the quality of steel, weirs are often installed, and the range of θ was found from the results of uniform heating tests that took these conditions into account.
又、ガス吐出口の巾を10〜20ｍ／ｍ，エアー吐
出口の巾を20〜30ｍ／ｍにするときにはCOG中
のタール分の付着が防止されることが知られた。 It has also been found that when the width of the gas discharge port is 10 to 20 m/m and the width of the air discharge port is 20 to 30 m/m, the adhesion of tar in COG can be prevented.
本考案の加熱装置によれば、ガス吐出口７，エ
アー吐出口８を並列かつ交互に設けたので、ミキ
シングが良くなり、燃焼がよくしかも火炎長が１
ｍと長くなり加熱効率が向上した。又ガス吐出口
等の仕切板を外方に傾斜させたので火炎も外拡が
りになり、両者相俊つてタンデイツシユの均一加
熱ができるという効果がある。これに伴い溶鋼温
度，成分，介在物を適正に維持できるため鋳片品
質も向上させる等の効果もある、という、良品質
の鋳片製造過程で大きな効果を有する。 According to the heating device of the present invention, since the gas discharge ports 7 and the air discharge ports 8 are provided in parallel and alternately, mixing is improved, combustion is improved, and the flame length is 1.
The heating efficiency was improved. Furthermore, since the partition plates for the gas discharge ports and the like are tilted outward, the flame also spreads outward, which has the effect of allowing both to work together to uniformly heat the tundish. Along with this, the temperature, composition, and inclusions of the molten steel can be maintained appropriately, which has the effect of improving the quality of the slab, which has a great effect on the process of producing high-quality slabs.
さらに、従来の加熱装置では270Nm3／Hr×
2.5Hr要していたものが200Nm3／Hr×2.5Hrと約
25％もの省エネ効果を達成することができた。 Furthermore, the conventional heating device had a heat capacity of 270 Nm 3 /Hr x
What previously took 2.5 hours now takes about 200Nm3 /Hr x 2.5Hr.
We were able to achieve energy savings of 25%.
第１図は従来のバーナボデイの概略断面図、第
２図は従来のバーナボデイによるタンデイツシユ
の加熱状況を示す説明図、第３図，イは本考案の
バーナボデイの正面図、ロはその側面図、第４図
は本考案バーナボデイの底面図、第５図イは第３
図のＡ−A′部分断面拡大図、ロは第４図の吐出
口に至る流路説明用のバーナボデイ断面部分図、
第６図イは本考案装置による加熱時の昇温曲線を
示す図であり、ロは測温位置を示す容器の側面
図、ハは測温位置を示す容器の正面図である。
１：ガス配管、２：空気配管、５：バーナボデ
イ、７：ガス吐出口、８：エアー吐出口、９：ガ
ス流入口、１０：エアー流入口、１１：補助バー
ナガス流入口、１１′：補助バーナエアー流入
口、１２：仕切板、１３：補助バーナエアー吐出
口、１４：補助バーナガス吐出口。
Fig. 1 is a schematic cross-sectional view of a conventional burner body, Fig. 2 is an explanatory diagram showing how a tundish is heated by the conventional burner body, Fig. 3, A is a front view of the burner body of the present invention, B is its side view, and Fig. Figure 4 is a bottom view of the burner body of the present invention, and Figure 5 A is the third view.
A-A' partial cross-sectional enlarged view in the figure, B is a partial cross-sectional view of the burner body for explaining the flow path leading to the discharge port in Figure 4,
FIG. 6A is a diagram showing a temperature rise curve during heating by the device of the present invention, B is a side view of the container showing the temperature measurement position, and C is a front view of the container showing the temperature measurement position. 1: Gas piping, 2: Air piping, 5: Burner body, 7: Gas discharge port, 8: Air discharge port, 9: Gas inlet, 10: Air inlet, 11: Auxiliary burner gas inlet, 11': Auxiliary burner Air inlet, 12: Partition plate, 13: Auxiliary burner air outlet, 14: Auxiliary burner gas outlet.
Claims (1)
デイ５の吐出側に複数のバーナ吐出部を有する加
熱装置であつて、該バーナボデイ５の底部中央部
に補助バーナガス吐出口１４を設け、該補助バー
ナガス吐出口１４の両側に補助バーナエアー吐出
口１３を設け、更にそれぞれの該補助バーナエア
ー吐出口１３の外側に仕切板１２のひろがり角度
θを加熱面とバーナの位置関係より任意に設定可
能にしたスリツト状のガス吐出口７及びエアー吐
出口８を並列かつ交互に配置した事を特徴とする
溶融金属用容器の加熱装置。 This heating device has a plurality of burner discharge parts on the discharge side of a burner body 5 to which a gas pipe 1 and an air pipe 2 are attached, and an auxiliary burner gas discharge port 14 is provided at the center of the bottom of the burner body 5. Auxiliary burner air discharge ports 13 are provided on both sides of the outlet 14, and slits are provided on the outside of each of the auxiliary burner air discharge ports 13 so that the spreading angle θ of the partition plate 12 can be arbitrarily set according to the positional relationship between the heating surface and the burner. A heating device for a container for molten metal, characterized in that gas discharge ports 7 and air discharge ports 8 are arranged in parallel and alternately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18829982U JPS5994759U (en) | 1982-12-13 | 1982-12-13 | Heating device for containers for molten metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18829982U JPS5994759U (en) | 1982-12-13 | 1982-12-13 | Heating device for containers for molten metal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5994759U JPS5994759U (en) | 1984-06-27 |
| JPS6138757Y2 true JPS6138757Y2 (en) | 1986-11-07 |
Family
ID=30406251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18829982U Granted JPS5994759U (en) | 1982-12-13 | 1982-12-13 | Heating device for containers for molten metal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5994759U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5330838B2 (en) * | 2009-01-19 | 2013-10-30 | 新日鉄住金エンジニアリング株式会社 | Combustion burner for combustible gas generated from waste gasification |
-
1982
- 1982-12-13 JP JP18829982U patent/JPS5994759U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5994759U (en) | 1984-06-27 |
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