JP2003166008A - Method and device for substituting gas in exhaust-gas treatment apparatus accompanying melting/reducing furnace - Google Patents
Method and device for substituting gas in exhaust-gas treatment apparatus accompanying melting/reducing furnaceInfo
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- JP2003166008A JP2003166008A JP2001364620A JP2001364620A JP2003166008A JP 2003166008 A JP2003166008 A JP 2003166008A JP 2001364620 A JP2001364620 A JP 2001364620A JP 2001364620 A JP2001364620 A JP 2001364620A JP 2003166008 A JP2003166008 A JP 2003166008A
- Authority
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- Japan
- Prior art keywords
- gas
- gas treatment
- exhaust
- exhaust gas
- reduction furnace
- 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.)
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- Manufacture Of Iron (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、固体還元剤充填型
溶融還元炉に付帯する排ガス処理装置のガス置換方法及
び装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas replacement method and apparatus for an exhaust gas treatment apparatus attached to a solid reducing agent-filled smelting reduction furnace.
【０００２】[0002]
【従来の技術】固体還元剤充填型溶融還元炉は、亜鉛を
含む鉄スクラップを電気炉で溶解、精錬したときに発生
するダストを溶融・還元して、その中に含まれる鉄分な
どを有用資源として回収するのに用いられている。その
装置の概略は、特開２００１−１６４３０６号公報に示
されている。この固体還元剤充填型溶融還元炉は、図３
にその概略構成を示すように、羽口４を備えた溶融還元
炉１に塊コークス等の固体還元剤５を充填し、炉頂装入
設備６から固体還元剤を装入しながら、前記羽口４から
熱風２とともに粉状原料３を吹き込み、粉状原料３を還
元し出銑口７から溶融した銑鉄、スラグを取り出すもの
である。図３に示すように、この固体還元剤充填型溶融
還元炉１には、その炉頂近傍に排ガス１１を抜き出す煙
道１２が連接されており、該煙道１２から導き出される
排ガス１１を除塵し還元性ガスを回収するとともに、亜
鉛回収装置１６によって亜鉛分を金属酸化物あるいは水
酸化物の形で回収する排ガス処理装置１０が付設されて
いる。2. Description of the Related Art A solid reducing agent-filled smelting reduction furnace melts and reduces the dust generated when an iron scrap containing zinc is melted and refined in an electric furnace, and the iron contained in it is a useful resource. It is used to collect as. The outline of the apparatus is shown in Japanese Patent Laid-Open No. 2001-164306. This solid reducing agent-filled smelting reduction furnace is shown in FIG.
As shown in the schematic configuration thereof, a smelting reduction furnace 1 equipped with tuyere 4 is filled with a solid reducing agent 5 such as lump coke, and while the solid reducing agent is charged from a furnace top charging equipment 6, The powdery raw material 3 is blown together with the hot air 2 from the mouth 4, the powdery raw material 3 is reduced, and the molten pig iron and slag are taken out from the tapping port 7. As shown in FIG. 3, in the solid reducing agent-filled smelting reduction furnace 1, a flue 12 for extracting the exhaust gas 11 is connected in the vicinity of the furnace top, and the flue gas 11 led out from the flue 12 is dedusted. An exhaust gas treatment device 10 for recovering the reducing gas and recovering the zinc component in the form of a metal oxide or a hydroxide by a zinc recovery device 16 is additionally provided.
【０００３】すなわち、溶融還元炉１から発生するＣＯ
(一酸化炭素)に富んだ排ガスは、炉頂から煙道１２を経
てベンチュリ・スクラバ１３に導かれて除塵・洗浄さ
れ、さらに電気集塵装置１４でダストが除去された後、
排風機１５を経てガスの回収装置(図示せず)へ導かれ
る。一方、前記煙道１２には、水冷方式の亜鉛回収装置
１６が設けられている。そこでは排ガス１１中の金属酸
化物蒸気が水１８で急冷されて固体粒となり、亜鉛回収
装置１６の底部へ落下し、金属酸化物粒子を含むスラリ
ー１９となって溜まるようになっている。このスラリー
１９を亜鉛回収装置１６の底部から抜き出し、シックナ
ー１７で水を分離すれば、亜鉛を金属酸化物あるいは水
酸化物として回収できる。なお、シックナー１７から出
た水はポンプ２０により冷却水として再利用されるよう
になっている。That is, CO generated from the smelting reduction furnace 1
Exhaust gas rich in (carbon monoxide) is introduced from the furnace top through the flue 12 to the Venturi scrubber 13 for dust removal and cleaning, and after the dust is removed by the electric dust collector 14,
It is guided to a gas recovery device (not shown) via the exhaust fan 15. On the other hand, the flue 12 is provided with a water cooling type zinc recovery device 16. There, the metal oxide vapor in the exhaust gas 11 is rapidly cooled with water 18 to become solid particles, which fall to the bottom of the zinc recovery device 16 and accumulate as a slurry 19 containing metal oxide particles. By extracting the slurry 19 from the bottom of the zinc recovery device 16 and separating water with the thickener 17, zinc can be recovered as a metal oxide or a hydroxide. The water discharged from the thickener 17 is reused as cooling water by the pump 20.
【０００４】このような排ガス処理装置の操業に当たっ
ては、電気集塵機１４の定期点検など当該装置を円滑に
運転するために定期点検が欠かせない。そのようなとき
には、排ガス処理装置の系内を一旦不活性ガス、たとえ
ばＮ２ガスに置換した後、大気に置き換える操作が必要
になる、また、突発的に起こる事故のときにも、点検の
ために同様の操作が必要になる。そのようなとき、従来
は排ガス処理装置１０に複数設けられたＮ２供給口２４
を利用してＮ２ガスを吹き込み、ブリーダ２１から系内
のガスを抜くことによって排ガス処理装置１０内に充満
しているＣＯガスをＮ２ガスと置換していた。なお、ブ
リーダ２１は、上記排ガス処理装置１０と溶融還元炉１
とを連結する煙道１２に設けられている。In the operation of such an exhaust gas treatment apparatus, periodical inspection such as periodical inspection of the electrostatic precipitator 14 is essential for smooth operation of the apparatus. In such a case, it is necessary to temporarily replace the inside of the exhaust gas treatment system with an inert gas, for example, N 2 gas, and then replace it with the atmosphere. Also, in the event of a sudden accident, for inspection. The same operation is required. At such time, conventionally, a plurality of N 2 supply ports 24 provided in the exhaust gas treatment device 10 are provided.
The utilizing blowing N 2 gas, a CO gas that fills the exhaust gas treatment apparatus 10 by removing the gas in the system from the bleeder 21 was replaced with N 2 gas. The bleeder 21 includes the exhaust gas treatment device 10 and the smelting reduction furnace 1 described above.
It is provided in the flue 12 which connects with.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、かかる
手段は、ブリーダ２１側が負圧になることを利用した、
いわば自然換気に近い状態での操作である。そのため、
排ガス処理装置１０の系内のＮ２ガス置換に長時間を要
するばかりでなく、その後のＮ２から空気に置換すると
きに押し込みファン２３に大きな負荷がかかるという問
題があった。また、ときとして押し込みファン２３で空
気を押し込みすぎて、固体還元剤充填型溶融還元炉１内
を正圧にしてしまい、羽口４や出銑口７から熱風や銑鉄
等の溶融物が吹き出すという危険があった。However, such means utilizes the fact that the bleeder 21 side has a negative pressure.
It is, so to speak, an operation in a state close to natural ventilation. for that reason,
There is a problem that not only it takes a long time to replace the N 2 gas in the system of the exhaust gas treatment device 10, but also a large load is applied to the pushing fan 23 when the N 2 is replaced with air thereafter. In addition, sometimes the pushing fan 23 pushes air too much to make the inside of the solid reducing agent-filled smelting reduction furnace 1 at a positive pressure, and the molten matter such as hot air or pig iron is blown out from the tuyere 4 or the taphole 7. There was a danger.
【０００６】本発明は、休風時あるいは休止時の固体還
元剤充填型溶融還元炉の点検等にまつわる従来技術の問
題点を解決することを目的とし、系内のガス置換が短時
間で済み、また、点検等のための作業環境を整えるため
の大気吹き込みのための押し込みファンの負荷が小さ
く、かつ、点検等の際に溶融還元炉の操業を危険に曝す
ことのない固体還元剤充填型溶融還元炉に付帯する排ガ
ス処理装置のガス置換方法及び装置を提案することを目
的とする。An object of the present invention is to solve the problems of the prior art related to the inspection of a solid reducing agent-filled smelting reduction furnace when the air is off or at rest, and gas replacement in the system can be completed in a short time. In addition, the load of the pushing fan for injecting air to prepare the working environment for inspection etc. is small, and the solid reducing agent filled type melting that does not endanger the operation of the melting reduction furnace during inspection etc. It is an object of the present invention to propose a gas replacement method and device for an exhaust gas treatment device attached to a reduction furnace.
【０００７】[0007]
【課題を解決するための手段】本発明者等は、上記課題
を解決するために、ブリーダ側から積極的にガスを引い
てやれば、小さいエネルギーで固体還元剤充填型溶融還
元炉に付帯する排ガス処理装置内のガスを置換でき、か
つ固体還元剤充填型溶融還元炉の炉頂圧力を正圧になら
ないように制御できることを見出して本発明をなすに至
った。本発明は、この知見を利用したものであって、固
体還元剤充填型溶融還元炉の排ガス処理装置内のガスを
置換するに当たり、上記排ガス処理装置のガス導入口か
ら置換ガスを固体ガス還元剤充填型溶融還元炉の炉頂圧
が正圧にならないように導入するとともに、上記排ガス
処理装置と前記溶融還元炉を連結する煙道に設けられた
ブリーダにおいて前記ガス導入口から導入された置換ガ
スを吸引・排出するものである。In order to solve the above-mentioned problems, the inventors of the present invention attach a solid reducing agent-filled smelting reduction furnace with a small amount of energy by positively drawing gas from the bleeder side. The present invention has been completed by finding that the gas in the exhaust gas treatment device can be replaced and the top pressure of the solid reducing agent-filled smelting reduction furnace can be controlled so as not to be a positive pressure. The present invention utilizes this knowledge, and when replacing the gas in the exhaust gas treatment device of a solid reducing agent-filled smelting reduction furnace, the replacement gas is replaced with a solid gas reducing agent from the gas inlet of the exhaust gas treatment device. A replacement gas introduced from the gas inlet in the bleeder provided in the flue that connects the exhaust gas treatment device and the smelting reduction furnace while introducing it so that the top pressure of the filling type smelting reduction furnace does not become a positive pressure. To suck and discharge.
【０００８】上記発明は、溶融還元炉付帯排ガス処理装
置に置換ガス導入手段を設けるとともに、上記排ガス処
理装置と溶融還元炉を連結する煙道に設けられたブリー
ダにガス吸引手段を設けてなる固体還元剤充填型溶融還
元炉の排ガス処理装置によって実施することができる。According to the above invention, a solid gas is provided in which a replacement gas introduction means is provided in the smelting reduction furnace-attached exhaust gas treatment apparatus and a gas suction means is provided in a bleeder provided in a flue connecting the exhaust gas treatment apparatus and the smelting reduction furnace. It can be carried out by an exhaust gas treatment device of a reducing agent-filled smelting reduction furnace.
【０００９】[0009]
【発明の実施の形態】以下、図面を参照して本発明の実
施形態を説明する。図１は、本発明を実施するための設
備構成の概略図である。本例でも従来例の場合と同様
に、固体還元剤充填型溶融還元炉１に排ガス処理装置１
０が付設されている。固体還元剤充填型溶融還元炉１の
構成は従来例の場合とまったく同一である。一方、排ガ
ス処理装置１０には、図３で示したものと同一の不活性
ガス供給口２４か、又は排ガス処理装置１０の煙道の下
流側部分に不活性ガス導入口３５かが設けられている。
なお、置換ガスとして使用する不活性ガスとしてはＮ２
ガスを利用するのが経済的である。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic diagram of an equipment configuration for carrying out the present invention. Also in this example, as in the case of the conventional example, the exhaust gas treatment device 1 is installed in the solid reducing agent-filled smelting reduction furnace 1.
0 is attached. The configuration of the solid reducing agent-filled smelting reduction furnace 1 is exactly the same as that of the conventional example. On the other hand, the exhaust gas treatment device 10 is provided with the same inert gas supply port 24 as shown in FIG. 3 or an inert gas introduction port 35 at the downstream side portion of the flue of the exhaust gas treatment device 10. There is.
The inert gas used as the replacement gas is N 2
It is economical to use gas.
【００１０】また、本発明を実施するために、緊急ガス
放出用のブリーダ２１にガス吸引手段が設けられる。こ
のガス吸引手段としては、図２に示すように、ブリーダ
２１内にガス噴射管２６を設け、これに弁２７、２８、
２９を介して高圧Ｎ２配管に接続したエジェクター２５
を利用できる。なおこのエジェクター２５には圧力計３
０、３１を設けて本発明によるガス吸引操作が監視でき
るようにする。Further, in order to carry out the present invention, the bleeder 21 for releasing the emergency gas is provided with a gas suction means. As the gas suction means, as shown in FIG. 2, a gas injection pipe 26 is provided in the bleeder 21 and valves 27, 28,
Ejector 25 connected to high-pressure N 2 pipe via 29
Is available. The ejector 25 has a pressure gauge 3
0, 31 are provided so that the gas suction operation according to the invention can be monitored.
【００１１】本発明に係る排ガス処理装置のガス置換方
法を実施するためには、まずブリーダ２１のブリーダ蓋
３４を開き、不活性ガス供給口２４（図３で示す不活性
ガス供給口２４と同一）、あるいは図１に示す不活性ガ
ス導入口３５から、置換ガスとしてたとえばＮ２ガスを
導入する。具体的には、不活性ガス供給口２４からＮ ２
ガスを圧入するか、あるいは不活性ガス導入口３５に高
圧Ｎ２配管（図示しない）を接続してＮ２ガスを導入す
る。それとともに、ブリーダ２１内に開口しているエジ
ェクター２５の弁２７〜２９を操作して作動状態とし、
エジェクター２５による吸引効果によってブリーダを通
って排ガス処理装置１０内のガスが排出されるようにす
る。Gas replacement method of exhaust gas treatment apparatus according to the present invention
In order to carry out the method, first, the bleeder lid of the bleeder 21
34, open the inert gas supply port 24 (the inert gas shown in FIG.
Same as the gas supply port 24) or the inert gas shown in FIG.
As a replacement gas, for example, NTwoGas
Introduce. Specifically, from the inert gas supply port 24 to N Two
Press the gas in or press the inert gas inlet 35
Pressure NTwoConnect a pipe (not shown) to connect NTwoIntroduce gas
It Along with that, the edge opening in the bleeder 21
The valves 27 to 29 of the vector 25 are operated to activate the
The suction effect of the ejector 25 allows the bleeder to pass through.
So that the gas in the exhaust gas treatment device 10 is discharged.
It
【００１２】その際、圧力計３０によってエジェクター
２５のガス吸引力を計測するとともに、圧力計３１によ
ってブリーダ２１、ひいては溶融還元炉１の炉頂圧を計
測する。そして、この炉頂圧が正圧にならないように、
積極的には大気圧に対して−１０００〜２０００Ｐａと
なるようブリーダ蓋３４の開度を調節する。また大気へ
の置換に際しては、押し込みファン２３の回転速度等を
調整する。この大気への置換の際にも、エジェクター２
５を作動状態とすることによりエジェクター２５による
吸引効果によってＮ２ガスへの置換と同様、大気へ置換
を問題なく行うことができる。なお、上記ブリーダ２１
内は、別途に設けたパージ用のガス噴射管３２（これに
は弁３３及び図示しないＮ２配管がなされている）を設
け、これによりＮ２ガス吹き込みを行うことにより、塵
埃や金属酸化物のブリーダ内への付着が防止できるよう
にするのがよい。At this time, the gas suction force of the ejector 25 is measured by the pressure gauge 30, and the bleeder 21, and hence the top pressure of the smelting reduction furnace 1, is measured by the pressure gauge 31. And so that this furnace top pressure does not become positive pressure,
The opening degree of the bleeder lid 34 is positively adjusted so as to be -1000 to 2000 Pa with respect to the atmospheric pressure. When the air is replaced with the atmosphere, the rotation speed of the pushing fan 23 is adjusted. Even when replacing with this atmosphere, the ejector 2
By setting 5 as the operating state, the replacement by the atmosphere can be performed without any problem by the suction effect of the ejector 25, similarly to the replacement by the N 2 gas. The bleeder 21
A gas injection pipe 32 for purging (a valve 33 and an N 2 pipe not shown in the drawing) provided separately is provided inside, and N 2 gas is blown by the gas injection pipe 32 to dust or metal oxide. It is better to prevent the sticking of the slag inside the bleeder.
【００１３】本発明は、上記のように排ガス処理装置の
後端側からＮ２などの不活性ガス、大気等の置換ガスを
導入するとともに、その前端側にあるブリーダにエジェ
クター等のガス吸引装置によって排ガス処理装置内に導
入されたガスを吸引するようにし、さらにその際、溶融
還元炉側の炉頂圧が大気圧に対して正圧にならないよう
に制御して操業するものである。それにより、排ガス処
理装置内のガス置換を容易、かつ、短時間に行えるよう
になる。また、その際の大気導入のために用いられる押
し込みファンの負荷も軽減され、かつ排ガス処理装置内
のガス置換を短時間で行える。また、溶融還元炉の炉頂
圧が大気圧に対して正圧とはならないから溶融還元炉の
操業を危険にさらすこともない。また、ブリータ側で排
気されているため、排ガス処理装置内の作業環境がＣＯ
の流入等による危険状態になることもない。ちなみに本
発明方法によれば、従来方に比べ押し込みファンの動力
が約１／３に軽減され、また、Ｎ２ガスへの置換時間が
約１／２に短縮された。According to the present invention, as described above, an inert gas such as N 2 or a replacement gas such as the atmosphere is introduced from the rear end side of the exhaust gas treatment device, and a gas suction device such as an ejector is introduced into the bleeder at the front end side thereof. The gas introduced into the exhaust gas treatment apparatus is sucked by the method, and at that time, the furnace top pressure on the smelting reduction furnace side is controlled so as not to become a positive pressure with respect to the atmospheric pressure, and the operation is performed. This makes it possible to easily replace the gas in the exhaust gas treatment device in a short time. Further, the load of the pushing fan used for introducing the atmosphere at that time is also reduced, and the gas replacement in the exhaust gas treatment device can be performed in a short time. Further, since the top pressure of the smelting reduction furnace does not become a positive pressure with respect to the atmospheric pressure, the operation of the smelting reduction furnace is not endangered. Also, since the bleeder is exhausted, the working environment in the exhaust gas treatment device is CO
There is no danger of the inflow of water. By the way, according to the method of the present invention, the power of the pushing fan is reduced to about 1/3 as compared with the conventional method, and the replacement time with N 2 gas is reduced to about 1/2.
【００１４】[0014]
【発明の効果】本発明により、従来法では問題であった
排ガス処理装置の保守、点検のために排ガス処理装置系
内を所定のガス雰囲気に置換する作業の負荷の軽減、及
び所要時間の短縮ならびに大気への置換が容易となり、
かつ作業の安全性が向上した。According to the present invention, the load of the work of replacing the inside of the exhaust gas treatment equipment system with a predetermined gas atmosphere for maintenance and inspection of the exhaust gas treatment equipment, which was a problem in the conventional method, is reduced, and the required time is shortened. Also, it becomes easier to replace it with air,
And work safety has improved.
【図１】 本発明を実施するための設備構成の概略図で
ある。FIG. 1 is a schematic diagram of an equipment configuration for carrying out the present invention.
【図２】 本発明を実施するためのブリーダ内へのガス
吸引装置の配置を示す設備構成概略図である。FIG. 2 is a schematic diagram of an equipment configuration showing an arrangement of a gas suction device in a bleeder for carrying out the present invention.
【図３】 従来の固体還元剤充填型溶融還元炉及びそれ
に付帯する排ガス処理装置の設備構成を示す概略図であ
る。FIG. 3 is a schematic diagram showing a facility configuration of a conventional solid reducing agent-filled smelting reduction furnace and an exhaust gas treatment apparatus incidental thereto.
１：固体還元剤充填型溶融還元炉 ２：熱風 ３：粉状原料 ４：羽口 ５：固体還元剤 ６：炉頂装入装置 ７：出銑鋼 １０：排ガス処理装置 １１：排ガス １２：煙道 １３：ベンチュリ・スクラバ １４：電気集塵機 １５：排風機 １６：亜鉛回収装置 １７：シックナー １８：水 １９：スラリー ２０：ポンプ ２１：ブリーダ ２２：空気供給口 ２３：押し込みファン ２４：不活性ガス供給口 ２５：エジェクター ２６：ガス噴射管 ２７〜２９：弁 ３０：圧力計 ３１：圧力計 ３２：ガス噴射管（パージ用） ３３：弁 ３４：ブリーダ蓋 ３５：不活性ガス導入口 1: Solid reducing agent-filled smelting reduction furnace 2: hot air 3: Powdery raw material 4: Tuyere 5: Solid reducing agent 6: Furnace top charging device 7: tap steel 10: Exhaust gas treatment device 11: Exhaust gas 12: Flue 13: Venturi Scrubber 14: Electric dust collector 15: Blower 16: Zinc recovery device 17: Thickener 18: Water 19: Slurry 20: Pump 21: Breeder 22: Air supply port 23: Push-in fan 24: Inert gas supply port 25: Ejector 26: Gas injection pipe 27-29: valve 30: Pressure gauge 31: Pressure gauge 32: Gas injection pipe (for purging) 33: valve 34: bleeder lid 35: Inert gas inlet
───────────────────────────────────────────────────── フロントページの続き (72)発明者 水藤 政人 岡山県倉敷市水島川崎通１丁目（番地な し） 川崎製鉄株式会社水島製鉄所内 Ｆターム(参考） 4K012 CB00 CB07 4K056 AA01 CA02 DB00 DC00 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Masato Mizuto 1-chome, Mizushima Kawasaki-dori, Kurashiki-shi, Okayama Shi) Kawasaki Steel Co., Ltd. Mizushima Steel Works F-term (reference) 4K012 CB00 CB07 4K056 AA01 CA02 DB00 DC00
Claims (2)
理装置内のガスを置換するに当たり、 上記排ガス処理装置のガス導入口から置換ガスを固体ガ
ス還元剤充填型溶融還元炉の炉頂圧が正圧にならないよ
うに導入するとともに、 上記排ガス処理装置と前記溶融還元炉を連結する煙道に
設けられたブリーダにおいて前記ガス導入口から導入さ
れた置換ガスを吸引・排出することを特徴とする溶融還
元炉付帯排ガス処理装置のガス置換方法。1. When replacing a gas in an exhaust gas treatment device of a solid reducing agent-filled smelting reduction furnace, a replacement gas is supplied from a gas inlet of the exhaust gas treatment device to a top pressure of the solid gas reducing agent-filled smelting reduction furnace. Is introduced so that it does not become a positive pressure, and the replacement gas introduced from the gas introduction port is sucked and discharged in a bleeder provided in a flue connecting the exhaust gas treatment device and the smelting reduction furnace. Gas replacement method for exhaust gas treatment equipment with smelting reduction furnace.
ス導入手段を設けるとともに、上記排ガス処理装置と溶
融還元炉を連結する煙道に設けられたブリーダにガス吸
引手段を設けてなることを特徴とする固体還元剤充填型
溶融還元炉の排ガス処理装置。2. A smelting reduction furnace-equipped exhaust gas treatment apparatus is provided with a replacement gas introduction means, and a bleeder provided in a flue connecting the exhaust gas treatment apparatus and the smelting reduction furnace is provided with a gas suction means. An exhaust gas treatment device for a solid reducing agent-filled smelting reduction furnace.
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|---|---|---|---|
| JP2001364620A JP4099817B2 (en) | 2001-11-29 | 2001-11-29 | Gas replacement method and apparatus for smelting reduction furnace-attached exhaust gas treatment apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001364620A JP4099817B2 (en) | 2001-11-29 | 2001-11-29 | Gas replacement method and apparatus for smelting reduction furnace-attached exhaust gas treatment apparatus |
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| Publication Number | Publication Date |
|---|---|
| JP2003166008A true JP2003166008A (en) | 2003-06-13 |
| JP4099817B2 JP4099817B2 (en) | 2008-06-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014114469A (en) * | 2012-12-07 | 2014-06-26 | Jfe Steel Corp | Dust removal water quantity control method of shaft furnace effluent gas, and dust removal water quantity control apparatus |
| CN105157433A (en) * | 2015-09-09 | 2015-12-16 | 蒋艳 | Environment-friendly corundum smelting furnace |
-
2001
- 2001-11-29 JP JP2001364620A patent/JP4099817B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014114469A (en) * | 2012-12-07 | 2014-06-26 | Jfe Steel Corp | Dust removal water quantity control method of shaft furnace effluent gas, and dust removal water quantity control apparatus |
| CN105157433A (en) * | 2015-09-09 | 2015-12-16 | 蒋艳 | Environment-friendly corundum smelting furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4099817B2 (en) | 2008-06-11 |
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