JPS61246585A - Dust collecting hood for ladle smelting facility - Google Patents
Dust collecting hood for ladle smelting facilityInfo
- Publication number
- JPS61246585A JPS61246585A JP60085432A JP8543285A JPS61246585A JP S61246585 A JPS61246585 A JP S61246585A JP 60085432 A JP60085432 A JP 60085432A JP 8543285 A JP8543285 A JP 8543285A JP S61246585 A JPS61246585 A JP S61246585A
- Authority
- JP
- Japan
- Prior art keywords
- dust collection
- hood
- ladle
- dust
- electrode hole
- 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
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、取鍋精錬設備の鍋蓋電極孔からの含塵排ガ
スを吸引する集塵フードに関し、集塵効率の向上と鋼中
チッ素ピックアップの防止を目的とするものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a dust collection hood that sucks dust-containing exhaust gas from the ladle cover electrode hole of ladle refining equipment, and improves dust collection efficiency and improves nitrogen content in steel. The purpose is to prevent pickup.
近年鋼の高品質化に対する要求が大きくなっており、取
鍋精錬等の炉外精畦の重要度が増大している。取鍋Ｎ錬
ｌこは種々のものがあるが、ＡＳＩＡ−８ＫＦ法やＶＡ
Ｄ法等で代表されるように、電極棒を取鍋上方から配設
し、溶鋼を加熱しつつ処理する構成のものが一般的であ
る。In recent years, there has been a growing demand for higher quality steel, and the importance of outside furnace refining, such as ladle refining, has increased. There are various types of ladle Nriko, but the ASIA-8KF method and VA method
As typified by the D method, it is common that an electrode rod is placed from above the ladle and the molten steel is heated and treated.
第３図と第４図１こその構造を示す。Figures 3 and 4 show the structure of Figure 1 only.
取鍋（５０）には水冷構造の鍋蓋（５１）が覆設され、
この蓋（６１）を貫通して複数の電極棒（５２）が配設
されている。The ladle (50) is covered with a pot lid (51) having a water-cooled structure.
A plurality of electrode rods (52) are provided penetrating this lid (61).
このような構造の設備において、溶鋼加熱処理やバブリ
ング処理或はパウダーインジェクション処理時に含塵排
ガスが発生し、これが蓋（５１）の電極孔（５３）から
上昇流となって排出する。In equipment with such a structure, dust-containing exhaust gas is generated during molten steel heating treatment, bubbling treatment, or powder injection treatment, and this is discharged as an upward flow from the electrode hole (53) of the lid (51).
この含塵排ガスを集塵するために集塵フード（６０）が
設けられている。集塵フード（６０）は鍋蓋（５１）の
上を覆うように設けられており、電極孔（５３）からの
排ガスをとらえて集塵ダクト継ぎ込み口（６１）からダ
クトへと排出するようになっている。このフード（６０
）の上面には同様に電極棒（５２）を貫通するための電
極孔（６２）が形成されている。A dust collection hood (60) is provided to collect dust from this dust-containing exhaust gas. The dust collection hood (60) is provided to cover the top of the pot lid (51), and is configured to capture exhaust gas from the electrode hole (53) and discharge it from the dust collection duct connection port (61) to the duct. It has become. This hood (60
) is similarly formed with an electrode hole (62) for penetrating the electrode rod (52).
しかし、上記した従来の構成の集塵フードでは十分な集
塵効率が上がらない欠点があった。However, the conventional dust collection hood described above has the disadvantage that it does not provide sufficient dust collection efficiency.
その理由として、まず鍋蓋は高熱負荷を受けるため水冷
蓋となっているが、この水冷用配管が水冷蓋上に多数布
設しであるため、水冷蓋上の集塵フードは完全ｔこ密閉
とすることが困難であることがあげられる。また電極孔
が電極の数だけあるのに対し、集塵ダクト継ぎ込み口（
６１）が単数であることも集塵効率を悪くしている。更
にフード（６０）の高さが低く、電極孔（５３）からの
排ガス上昇流を完全にとらえることができないことも原
因となっている。The reason for this is that the pot lid is water-cooled because it is subjected to a high heat load, but since many water-cooling pipes are installed on the water-cooled lid, the dust collection hood on the water-cooled lid is completely sealed. It is difficult to do so. Also, while there are as many electrode holes as there are electrodes, the dust collection duct connection port (
The fact that 61) is singular also impairs dust collection efficiency. Another cause is that the height of the hood (60) is low and the upward flow of exhaust gas from the electrode holes (53) cannot be completely captured.
更ｌこ従来の構成では、フード（６０）は下部開放型で
鍋蓋（５１）上に直接取付けであるため、集塵風量を増
加すると鍋内の負圧を招き、電極孔、ランス孔及び鍋〜
水冷蓋間シール部等より空気巻き込みが発生し、溶鋼中
のチッ素ピックアップを生じる欠点があった。Furthermore, in this conventional configuration, the hood (60) is open at the bottom and is mounted directly on the pot lid (51), so increasing the dust collection air volume causes negative pressure inside the pot, causing damage to the electrode holes, lance holes, and pot~
There was a drawback that air entrainment occurred from the seal between the water-cooled lids, etc., and nitrogen was picked up in the molten steel.
本発明は上記した従来技術の欠点を改善するためになさ
れたもので、集塵効率が高く、チッ素ピックアップを生
じない集塵フードを提供しよ）とするものである。The present invention has been made in order to improve the above-mentioned drawbacks of the prior art, and aims to provide a dust collection hood that has high dust collection efficiency and does not cause nitrogen pick-up.
本発明の集塵フードは、下部開放型とせず。The dust collection hood of the present invention does not have an open bottom.
ボックス型状とし、これを鍋蓋から所定の距離をあけて
設置しである。この構成により鍋内を負圧とすることを
防止している。そして該ボックスの下側には排ガスを吸
引する吸引口が設けである。吸引口は鍋蓋の各電極孔に
対応させて設けてあり、各電極孔からの排ガス上昇流を
効果的に吸引するようｌこなっている。また灸吸引口に
対応して集塵ダクト継ぎ込み口が設けられており、集塵
効率を更ｌこ向上させている。It has a box shape and is installed at a predetermined distance from the pot lid. This configuration prevents negative pressure inside the pot. A suction port for sucking exhaust gas is provided at the bottom of the box. The suction ports are provided corresponding to each electrode hole of the pot lid, and are arranged in such a way as to effectively suck the upward flow of exhaust gas from each electrode hole. Additionally, a dust collection duct connection port is provided corresponding to the moxibustion suction port, further improving dust collection efficiency.
以下本発明の一実施例を図面ｌこ基づいて説明する。第
１図は正断■図、第２図は平面図である。図中（５０）
は取鍋、（５１）は鍋蓋、（Ｓ２）は電極棒％ （５３
）は電極孔である。An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a normal sectional view, and FIG. 2 is a plan view. In the figure (50)
is the ladle, (51) is the pot lid, (S2) is the electrode rod% (53
) is the electrode hole.
集塵フード本体（１）はボックス型状をしてセリ、鍋蓋
（５１）と所定の空［！ｉ （Ｓ）をあけて鍋蓋（５１
）の上方に設置しである。この空１！ｌ （８）は、即
ち大気層となっている。本体（１）には電極棒（５２）
が貫通し、上面側は電極孔ＧＯ１下面は電極孔であると
同時ｌこ吸引口（２）となっている。The dust collection hood body (1) is box-shaped and has a lid (51) and a predetermined space [!]. i Open (S) and remove the pot lid (51
). This sky 1! In other words, l (8) is an atmospheric layer. The main body (1) has an electrode rod (52)
The upper surface side is an electrode hole GO1, and the lower surface is an electrode hole and a suction port (2).
従って、この吸引口（２）は鍋蓋（５１）の各電極孔（
５３）の上方ｌこ対応して設置されることになる。Therefore, this suction port (2) is connected to each electrode hole (
53) will be installed corresponding to the upper part.
本体＋１１の高さｈは任意の高さとすることが可能で、
排ガス上昇流を十分に捕捉できる高さとする。本体（１
）の側周には集塵ダクト継ぎ込み口（３）が設けられて
いる。この継ぎ込み口（３）は、吸引口（２）の数だけ
設けられており、この実施例では電極棒（５２）及び吸
引口（２）の数が３であるから、継ぎ込み口（３）も３
個となっている。The height h of the main body +11 can be set to any height,
The height shall be sufficient to capture the upward flow of exhaust gas. Main body (1
) is provided with a dust collection duct connection port (3) on the side periphery. The number of connection ports (3) is equal to the number of suction ports (2), and since the number of electrode rods (52) and suction ports (2) is three in this embodiment, the number of connection ports (3) is equal to the number of suction ports (2). ) also 3
It is individual.
以上の構成にセいて、電極孔（５３）から排出される含
塵排ガスは吸引口（２）から吸引される。With the above configuration, the dust-containing exhaust gas discharged from the electrode hole (53) is sucked through the suction port (2).
本体（１）の高さは排ガスを捕捉するに十分な高さとす
ることができるから、該排ガスは効果的に本体（１）に
捕捉され、継ぎ込み口（３）から集塵ダクトへと送られ
る。継ぎ込み口（３）は吸引口（２）の数だけあるから
、この集塵も効率的ｌこ行われる。Since the height of the main body (1) can be made high enough to capture the exhaust gas, the exhaust gas is effectively captured in the main body (1) and sent to the dust collection duct from the inlet (3). It will be done. Since there are as many inlet ports (3) as there are suction ports (2), this dust collection is also performed efficiently.
本体（１）はまたボックス型状のため密閉性が優れてお
り、吸引の無駄がなく、これも集塵効率の向上に寄与し
ている。また鍋蓋（５１）に密着せず離間しているため
、取鍋（５０）内を負圧にすることなく、鍋内に空気の
巻き込みを生じることがない。The main body (1) is also box-shaped, so it has excellent airtightness, and there is no wasted suction, which also contributes to improving dust collection efficiency. Moreover, since it is not in close contact with the pot lid (51) but is spaced apart, the inside of the ladle (50) will not be under negative pressure, and air will not be drawn into the pot.
以上の結果、集塵効率の向上と共ｌこ、チッ素ピックア
ップの防止も図れる。As a result of the above, it is possible to improve the dust collection efficiency and also to prevent nitrogen pickup.
本発明者らの実験によれば、従来の集塵フードでは集塵
ダン３１００９ｇ開度ｌこ詔いても発塵が著しかったが
、上記した集塵フードでは集塵ダンパ開度７０〜８０係
で十分な集塵が行えた。また、これによる集塵機ブロア
の省電力効果も大きかった。更ｌこチッ素ビックアップ
速度も従来の０．３０ ｐｐｍ／ｍｉｎ から０．１
０ ｐｐｍ／ｍｉｎとほぼｉ程度まで低下した。According to experiments conducted by the inventors, the conventional dust collection hood generated significant dust even when the dust collection damper was opened at 31,009g, but the above-mentioned dust collection hood generated dust even when the dust collection damper was opened at 70 to 80 degrees. Sufficient dust collection was achieved. This also had a significant power saving effect on the dust collector blower. Furthermore, the nitrogen pickup speed has also been reduced from the conventional 0.30 ppm/min to 0.1
It decreased to 0 ppm/min, which is about i.
以上説明したように、本発明の集塵フードｌこよれば％
集塵効率が高く、また鍋内への空気巻き込みを生じずチ
ッ素ピックアップを抑制することができる等の効果があ
る。As explained above, the dust collection hood of the present invention has a percentage of
It has high dust collection efficiency, and has the effect of suppressing nitrogen pick-up without causing air to be drawn into the pot.
第１図は本発明の集塵フードの一実施例を示す正断面図
、第２図はその平面図％第３図と第４図は従来の集塵フ
ードの説明図である。
ロン・・・集塵フード本体％（２）・・・吸引口％（３
）・・・集塵ダクト継ぎ込み口、ＱＧ・・・電極孔。
特許出願人 日本ｖＡ管株式会社
発 明 者 塩 飽 晶 夫同
浜 １） 米 市第 １
図
第 ２ 図FIG. 1 is a front sectional view showing one embodiment of the dust collecting hood of the present invention, and FIG. 2 is a plan view thereof. FIGS. 3 and 4 are explanatory diagrams of a conventional dust collecting hood. Ron... Dust collection hood body % (2)... Suction port % (3
)...Dust collection duct connection port, QG...Electrode hole. Patent applicant: Japan vA Tube Co., Ltd. Inventor: Akira Shio
Hama 1) Komeichi Daiichi 1
Figure 2
Claims (1)
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60085432A JPS61246585A (en) | 1985-04-23 | 1985-04-23 | Dust collecting hood for ladle smelting facility |
| US06/782,525 US4674101A (en) | 1984-10-12 | 1985-10-01 | Arc-heating type extra-furnace refining apparatus |
| EP85112612A EP0177908B1 (en) | 1984-10-12 | 1985-10-04 | Arc-heating type extra-furnace refining apparatus |
| DE8585112612T DE3581579D1 (en) | 1984-10-12 | 1985-10-04 | SYSTEM FOR REFRESHING WITH AN ADDITIONAL ARC FURNACE. |
| KR1019850007457A KR900002573B1 (en) | 1984-10-12 | 1985-10-10 | Arc-heating type axtra-furnace refining apparatus |
| CA000492825A CA1273044A (en) | 1984-10-12 | 1985-10-11 | Arc heating type extra-furnace refining apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60085432A JPS61246585A (en) | 1985-04-23 | 1985-04-23 | Dust collecting hood for ladle smelting facility |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61246585A true JPS61246585A (en) | 1986-11-01 |
Family
ID=13858681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60085432A Pending JPS61246585A (en) | 1984-10-12 | 1985-04-23 | Dust collecting hood for ladle smelting facility |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61246585A (en) |
-
1985
- 1985-04-23 JP JP60085432A patent/JPS61246585A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208527654U (en) | A kind of dust-extraction unit for electrode rotary double-station LF furnace | |
| JPS61246585A (en) | Dust collecting hood for ladle smelting facility | |
| CN208555442U (en) | A kind of fume treatment dust suction hood | |
| CN214694320U (en) | Blast furnace blowing equipment for pyrometallurgy of antimony | |
| JPS6345672Y2 (en) | ||
| CN217921124U (en) | Dust collector that casting crane used | |
| CN205774653U (en) | A kind of energy-saving bell of LF ladle refining furnace | |
| CN207877772U (en) | A kind of refining furnace facilitating processing fuel residues | |
| CN2295178Y (en) | Electric-oven smoke collecting hood | |
| KR200265549Y1 (en) | Guided Canopy Hood | |
| CN211420216U (en) | Ladle refining furnace | |
| JPS6120661A (en) | Dust collector of ladle for refining | |
| CN2239606Y (en) | Local fume exhaust cover for d.c electric arc furnace | |
| CN212881485U (en) | Hot stove smoke and dust in ore deposit subsides collection device | |
| CN210108016U (en) | Dust removing device of tilting furnace | |
| CN108489289A (en) | Electrode hole flue gas anti-overflow device and its method when one kind is for the production of LF stoves | |
| CN217275556U (en) | Non-contact type burning gas-collecting range | |
| CN203065510U (en) | Steel ladle refining furnace | |
| CN210584278U (en) | Tail gas filtering structure for intermediate frequency furnace smelting | |
| CN216592824U (en) | Traveling crane through type factory building ring smoke collecting hood | |
| CN219582001U (en) | Recovery unit of electronic welding equipment | |
| CN218065978U (en) | Annular side suction type movable dust suction connector of intermediate frequency furnace | |
| CN208155093U (en) | Electrode hole flue gas anti-overflow device when one kind is for the production of LF furnace | |
| CN218155581U (en) | Cyclone type dust hood for intermediate frequency furnace | |
| CN211133373U (en) | Dust removal and cooling device for high-temperature furnace operating room |