JPH0989470A - Method for preheating raw material by using a plurality of melting furnaces - Google Patents
Method for preheating raw material by using a plurality of melting furnacesInfo
- Publication number
- JPH0989470A JPH0989470A JP27055495A JP27055495A JPH0989470A JP H0989470 A JPH0989470 A JP H0989470A JP 27055495 A JP27055495 A JP 27055495A JP 27055495 A JP27055495 A JP 27055495A JP H0989470 A JPH0989470 A JP H0989470A
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- exhaust gas
- electric furnace
- raw material
- duct
- 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
- 239000002994 raw material Substances 0.000 title claims abstract description 63
- 238000002844 melting Methods 0.000 title claims abstract description 44
- 230000008018 melting Effects 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims description 13
- 239000002893 slag Substances 0.000 claims abstract description 15
- 238000010079 rubber tapping Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000002699 waste material Substances 0.000 description 3
- 230000005611 electricity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
Landscapes
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Furnace Details (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、主に、鉄屑等の原
料を電気炉で溶解せしめる際に発生する排ガスを、他の
電気炉内の原料に接触せしめて、次に溶解させるこの原
料を排ガスの熱によって効率良く、経済的に予熱できる
ようにした複数の溶解炉を利用した原料予熱方法に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a raw material such as iron scrap which is produced by melting an exhaust gas in an electric furnace in contact with a raw material in another electric furnace and then melts the raw material. The present invention relates to a raw material preheating method utilizing a plurality of melting furnaces capable of preheating efficiently and economically with the heat of exhaust gas.
【０００２】[0002]
【従来の技術】従来の溶解炉にあって、その排ガスを利
用して原料を予熱する手段としては、例えば、電気溶解
炉内で原料を溶解している時に発生する高温（摂氏１０
００度乃至１３００度程度）の排ガスを、天蓋に形成し
てある排気口からダクトを介して別体で設けた予熱炉の
下部に送給し、この予熱炉を通過した排ガスを予熱炉の
上部からダクトを介して次の予熱炉の下部に送給し、次
の予熱炉の上部からダクトを介して排気されるように
し、予熱炉内の原料を夫々予熱し、予熱後の原料を電気
溶解炉に投入するような手段が多く用いられている。2. Description of the Related Art In a conventional melting furnace, as a means for preheating the raw material by using the exhaust gas thereof, for example, a high temperature (10 degrees Celsius) generated while melting the raw material in an electric melting furnace is used.
Exhaust gas of about 00 to 1300 degrees) is sent from the exhaust port formed in the canopy to the lower part of the preheating furnace provided separately through a duct, and the exhaust gas passing through this preheating furnace is fed to the upper part of the preheating furnace. From the upper part of the next preheating furnace so that it is exhausted from the upper part of the next preheating furnace through the duct to preheat each raw material in the preheating furnace and electromelt the raw material after preheating. Means such as charging into a furnace are often used.
【０００３】また、排ガスを利用して原料を予熱する手
段としては、例えば、原料を溶解している電気炉で発生
する排ガスを、別の電気炉内にダクトを介して送給し、
この電気炉内に収納しておいた原料を排ガスで予熱せし
め、この排ガスを、電気炉に別途設けた開口部からダク
トを介して排ガス処理装置に送給するようにしている。As a means for preheating the raw material using the exhaust gas, for example, the exhaust gas generated in the electric furnace in which the raw material is melted is fed into another electric furnace through a duct,
The raw material stored in the electric furnace is preheated with the exhaust gas, and the exhaust gas is supplied to the exhaust gas processing device from an opening provided separately in the electric furnace through a duct.
【０００４】[0004]
【発明が解決しようとする課題】ところが、従来の原料
の予熱手段にあっては、原料置場から予熱炉へ、予熱炉
から予熱炉へ、そして、予熱炉から溶解炉へと原料を夫
々運搬する必要があり、効率良く溶解炉への原料投入が
行われ難い難点があった。However, in the conventional means for preheating the raw material, the raw material is transported from the raw material storage site to the preheating furnace, from the preheating furnace to the preheating furnace, and from the preheating furnace to the melting furnace. It was necessary, and it was difficult to efficiently feed the raw materials into the melting furnace.
【０００５】また、従来の原料の予熱手段にあっては、
電気炉にダクトを連結するための開口部を別途設ける必
要があり、このとき、開口部から電気炉内に二次空気が
入り込む虞れがあり、ひいては、排ガス処理装置に於い
て能力の高い排風機を用いなければならない難点等もあ
った。Further, in the conventional means for preheating the raw materials,
It is necessary to separately provide an opening for connecting the duct to the electric furnace.At this time, there is a risk that secondary air may enter the electric furnace through the opening, and as a result, exhaust gas with high capacity in the exhaust gas treatment device may be discharged. There were some difficulties such as having to use a wind blower.
【０００６】[0006]
【課題を解決するための手段】そこで、本発明は、上述
した技術的課題を解消すべく創出されたもので、請求項
１記載の原料予熱方法にあっては、溶解炉とした一方の
電気炉Ａから発生する排ガスを、予熱炉とした他方の電
気炉Ｂ内に、相互の排気口を連通するダクト１を介して
送給し、他方の電気炉Ｂ内に予め収納しておいた原料を
排ガスで予熱せしめ、この排ガスを、電気炉Ｂに設けて
ある排滓口Ｂ１に装着自在なダクト５，１５を介して排
ガス処理装置に送給する手段を採用した。Therefore, the present invention was created in order to solve the above-mentioned technical problem. In the raw material preheating method according to claim 1, one of the electric appliances which is a melting furnace is used. Exhaust gas generated from the furnace A is fed into the other electric furnace B, which is a preheating furnace, through the duct 1 that connects the exhaust ports to each other, and the raw material is stored in the other electric furnace B in advance. Was preheated with the exhaust gas, and the exhaust gas was sent to the exhaust gas treatment device through ducts 5 and 15 which were attachable to the slag outlet B1 provided in the electric furnace B.
【０００７】また、請求項２記載の原料予熱方法にあっ
ては、溶解炉とした一方の電気炉Ａから発生する排ガス
を、予熱炉とした他方の電気炉Ｂ内に、相互の排気口を
連通するダクト１を介して送給し、他方の電気炉Ｂ内に
予め収納しておいた原料を排ガスで予熱せしめ、この排
ガスを、電気炉Ｂに設けてある排滓口Ｂ１に装着自在な
ダクト５，１５を介して排ガス処理装置に送給し、次
に、一方の電気炉Ａでの原料の溶解、出湯作業が終了し
た後、他方の電気炉Ｂを溶解炉とし、一方の電気炉Ａを
予熱炉とし、溶解炉とした他方の電気炉Ｂから発生する
排ガスを、予熱炉とした一方の電気炉Ａ内にダクト１を
介して送給し、一方の電気炉Ａ内に収納せしめた原料を
排ガスで予熱せしめ、この排ガスを、一方の電気炉Ａに
設けてある排滓口Ａ１に装着せしめたダクト５，１７を
介して排ガス処理装置に送給する手段を採用した。Further, in the raw material preheating method according to the second aspect, exhaust gas generated from one electric furnace A which is a melting furnace is introduced into the other electric furnace B which is a preheating furnace so that mutual exhaust ports are provided. The raw material that has been fed through the communicating duct 1 and has been stored in advance in the other electric furnace B is preheated with exhaust gas, and this exhaust gas can be attached to the slag outlet B1 provided in the electric furnace B freely. After being fed to the exhaust gas treatment device through the ducts 5 and 15, and then the work of melting the raw materials and tapping in one of the electric furnaces A is completed, the other electric furnace B is used as a melting furnace and one of the electric furnaces is used. Exhaust gas generated from the other electric furnace B, which is a preheating furnace and A is a preheating furnace, is fed into one electric furnace A, which is a preheating furnace, through a duct 1 and is stored in the one electric furnace A. The raw material is preheated with exhaust gas, and the exhaust gas is discharged from the exhaust port A provided in one electric furnace A. Through the ducts 5 and 17, which was allowed attached employing a feed Kyusuru means to the exhaust gas processing device.
【０００８】[0008]
【発明の実施の形態】以下、本発明を図示例に基づいて
説明する。先ず、本発明の方法を実施する装置は、例え
ば、鉄屑等の原料を溶解する一対の電気炉Ａ，Ｂを使用
し、この一対の電気炉Ａ，Ｂは、その天蓋に形成してあ
る排気口相互をダクト１を介して連通せしめると共に、
このダクト１には、ダンパ２，３が所定位置に夫々設け
てある。そして、一対の電気炉Ａ，Ｂには、溶解された
原料内に含まれていた不純物（ノロ）等を排出するため
の排滓口Ａ１，Ｂ１が夫々設けてあり、この排滓口Ａ
１，Ｂ１に密接状に装着可能な密接部６を先端に有する
可動式のダクト５が設けてある。すなわち、この可動式
のダクト５は、その揺動動作（或いは、旋回動作）によ
って、一方の電気炉Ａの排滓口Ａ１にその密接部６を装
着せしめることができ、或いは、他方の電気炉Ｂの排滓
口Ｂ１にその密接部６を装着せしめることができるよう
に構成されている。しかも、このダクト５には、ダンパ
７が設けてある。更に、このダクト５の基端部分には、
排ガス処理装置に連通されるダクト８と、排気口相互を
連通するダクト１の中央部分に連通されるダクト９とが
接続されている。尚、このダクト９にもダンパ１０が設
けてある（図１参照）。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below based on illustrated examples. First, the apparatus for carrying out the method of the present invention uses, for example, a pair of electric furnaces A and B for melting raw materials such as iron scraps, and the pair of electric furnaces A and B is formed on its canopy. The exhaust ports can communicate with each other via duct 1,
The duct 1 is provided with dampers 2 and 3 at predetermined positions. The pair of electric furnaces A and B are respectively provided with slag openings A1 and B1 for discharging impurities (slag) contained in the melted raw material.
There is provided a movable duct 5 having a contact portion 6 which can be mounted in a close contact with 1 and B1 at its tip. That is, in the movable duct 5, the close contact portion 6 can be attached to the slag outlet A1 of the one electric furnace A by its swinging operation (or turning operation), or the other electric furnace The close contact portion 6 can be attached to the waste port B1 of B. Moreover, a damper 7 is provided on the duct 5. Furthermore, at the base end of this duct 5,
A duct 8 that communicates with the exhaust gas treatment device and a duct 9 that communicates with the central portion of the duct 1 that communicates the exhaust ports with each other are connected. A damper 10 is also provided on the duct 9 (see FIG. 1).
【０００９】ところで、一対の電気炉Ａ，Ｂの排滓口Ａ
１，Ｂ１には、ダクト１５，１７を夫々接続せしめてお
き、このダクト１５，１７の基端部分を排ガス処理装置
に連通されるダクト７に接続するようにしても良い。し
かも、ダクト１５，１７には、ダンパ１６，１８が夫々
設けられている（図２参照）。By the way, the slag outlet A of the pair of electric furnaces A and B
The ducts 15 and 17 may be connected to 1 and B1, respectively, and the base end portions of the ducts 15 and 17 may be connected to the duct 7 communicating with the exhaust gas treatment device. Moreover, dampers 16 and 18 are provided on the ducts 15 and 17 respectively (see FIG. 2).
【００１０】次に、前述のような装置を使用した本発明
の方法は、一方の電気炉Ａを溶解炉とし、他方の電気炉
Ｂを予熱炉とする。しかも、これら電気炉Ａ，Ｂには、
鉄屑等の原料を収納しておく。そして、一方の電気炉Ａ
を作動させて、原料を溶解せしめ、このとき発生する排
ガスを、排気口からダクト１を介して他方の電気炉Ｂ内
に送給する。このときダクト１のダンパ２，３は夫々開
いた状態としておき、ダクト９のダンパ１０は閉じた状
態としておく。それから、他方の電気炉Ｂ内に送給され
た排ガスで、他方の電気炉Ｂ内の原料を予熱し、この排
ガスを、他方の電気炉Ｂの排滓口Ｂ１に装着させたダク
ト５及び排ガス処理装置に連通されるダクト８を介して
排ガス処理装置に送給する。このときダクト５のダンパ
７は開いた状態としておく。Next, in the method of the present invention using the apparatus as described above, one electric furnace A is used as a melting furnace and the other electric furnace B is used as a preheating furnace. Moreover, in these electric furnaces A and B,
Store raw materials such as iron scraps. And one electric furnace A
Is operated to melt the raw material, and the exhaust gas generated at this time is fed from the exhaust port through the duct 1 into the other electric furnace B. At this time, the dampers 2 and 3 of the duct 1 are kept open, and the damper 10 of the duct 9 is kept closed. Then, the exhaust gas sent into the other electric furnace B preheats the raw material in the other electric furnace B, and this exhaust gas is attached to the exhaust port B1 of the other electric furnace B and the exhaust gas and the exhaust gas. The gas is fed to the exhaust gas treatment device via a duct 8 communicating with the treatment device. At this time, the damper 7 of the duct 5 is kept open.
【００１１】また、他方の電気炉Ｂ内に送給された排ガ
スで、他方の電気炉Ｂ内の原料が十分予熱されたとき
は、ダクト１のダンパ３及びダクト５のダンパ７を閉じ
た状態とすると共に、ダクト９のダンパ１０を開いた状
態とし、一方の電気炉Ａ内で発生する排ガスが他方の電
気炉Ｂ内を通過することなく排ガス処理装置に送給され
る。When the raw material in the other electric furnace B is sufficiently preheated by the exhaust gas fed into the other electric furnace B, the damper 3 of the duct 1 and the damper 7 of the duct 5 are closed. At the same time, the damper 10 of the duct 9 is opened, and the exhaust gas generated in one electric furnace A is fed to the exhaust gas treatment device without passing through the other electric furnace B.
【００１２】更に、一方の電気炉Ａでの原料の溶解、出
湯作業が終了した後は、他方の電気炉Ｂを溶解炉とし、
一方の電気炉Ａを予熱炉とする。しかも、一方の電気炉
Ａには、鉄屑等の原料を収納しておく。そして、他方の
電気炉Ｂを作動させて、予熱された原料を溶解せしめ、
このとき発生する排ガスを、排気口からダクト１を介し
て一方の電気炉Ａ内に送給する。このときダクト１のダ
ンパ２，３は夫々開いた状態としておき、ダクト９のダ
ンパ１０は閉じた状態としておく。それから、一方の電
気炉Ａ内に送給された排ガスで、一方の電気炉Ａ内の原
料を予熱し、この排ガスを、一方の電気炉Ａの排滓口Ａ
１に装着させたダクト５及び排ガス処理装置に連通され
るダクト８を介して排ガス処理装置に送給する。しか
も、一方の電気炉Ａ内の原料が予熱された後は、前述の
如き作業が繰り返される。Further, after the raw material melting and tapping work in one electric furnace A is completed, the other electric furnace B is used as a melting furnace.
One electric furnace A is used as a preheating furnace. In addition, one electric furnace A stores raw materials such as iron scraps. Then, the other electric furnace B is operated to melt the preheated raw material,
The exhaust gas generated at this time is fed from the exhaust port into the electric furnace A on one side through the duct 1. At this time, the dampers 2 and 3 of the duct 1 are kept open, and the damper 10 of the duct 9 is kept closed. Then, the raw material in one electric furnace A is preheated by the exhaust gas fed into one electric furnace A, and this exhaust gas is discharged from the exhaust port A of the one electric furnace A.
The gas is fed to the exhaust gas treatment device through the duct 5 attached to No. 1 and the duct 8 communicating with the exhaust gas treatment device. Moreover, after the raw material in one of the electric furnaces A is preheated, the above-mentioned work is repeated.
【００１３】尚、ダクト５は、一方の電気炉Ａの排滓口
Ａ１、或いは、他方の電気炉Ｂの排滓口Ｂ１に、密接部
６を介して交互に装着するようになるが、図２に示すよ
うに、一方の電気炉Ａの排滓口Ａ１と、他方の電気炉Ｂ
の排滓口Ｂ１とに夫々ダクト１５，１７を接続しておい
た場合は、これらダクト１５，１７に設けたダンパ１
６，１８の開閉によって操作される。The ducts 5 are alternately attached to the waste port A1 of the one electric furnace A or the waste port B1 of the other electric furnace B through the close contact portion 6, as shown in FIG. As shown in FIG. 2, the slag outlet A1 of one electric furnace A and the other electric furnace B
When the ducts 15 and 17 are connected to the slag outlet B1 of the damper 1 provided in the ducts 15 and 17, respectively.
It is operated by opening and closing 6,18.
【００１４】ところで、本発明の方法は、複数（３つ以
上）の電気炉を利用して実施することができるものであ
る。すなわち、複数の電気炉の内の一つを溶解炉とし、
その他の電気炉を予熱炉とし、溶解炉とした電気炉から
の排ガスを予熱炉とした電気炉内に順次（或いは、同時
に）送給し、予熱炉とした電気炉内の原料を予熱せしめ
るようにする。By the way, the method of the present invention can be carried out by utilizing a plurality of (three or more) electric furnaces. That is, one of the plurality of electric furnaces is a melting furnace,
The other electric furnace is used as a preheating furnace, and the exhaust gas from the electric furnace, which is a melting furnace, is sequentially (or simultaneously) fed into the electric furnace, which is a preheating furnace, to preheat the raw materials in the electric furnace, which is a preheating furnace. To
【００１５】[0015]
【発明の効果】従って、請求項１記載の原料予熱方法
は、溶解炉とした一方の電気炉Ａから発生する排ガス
を、予熱炉とした他方の電気炉Ｂ内に、相互の排気口を
連通するダクト１を介して送給し、他方の電気炉Ｂ内に
予め収納しておいた原料を排ガスで予熱せしめ、この排
ガスを、電気炉Ｂに設けてある排滓口Ｂ１に装着自在な
ダクト５，１５を介して排ガス処理装置に送給するの
で、予熱した原料を移動せしめることなく溶解できるよ
うになり、原料の溶解作業自体が簡単に行えるようにな
り、原料の熱損失も少なくなると共に、原料の溶解時間
の短縮、及び溶解に必要な電気エネルギーの節約に役立
ち、しかも、原料の予熱、溶解作業が効率良く、経済的
に行えるようになる。Therefore, in the raw material preheating method according to the first aspect of the present invention, the exhaust gas generated from one electric furnace A used as a melting furnace is connected to the other electric furnace B used as a preheating furnace so that the exhaust ports communicate with each other. A duct that can be attached to a slag outlet B1 provided in the electric furnace B by feeding the exhaust gas through a duct 1 to preheat the raw material previously stored in the other electric furnace B with the exhaust gas. Since the preheated raw material is melted without moving it since it is fed to the exhaust gas treatment device through 5, 15, the raw material melting operation itself can be easily performed, and heat loss of the raw material is reduced. In addition, it shortens the melting time of the raw material and saves the electric energy required for melting, and the preheating and melting work of the raw material can be performed efficiently and economically.
【００１６】特に、電気炉Ｂに設けてある排滓口Ｂ１に
装着自在なダクト５，１５を介して排ガスを排ガス処理
装置に送給するので、電気炉Ｂにダクト５，１５を連結
するための開口部を別途設ける必要がなくなり、電気炉
Ｂ内に二次空気が入り込む虞れがなくなり、ひいては、
排ガス処理装置に於いて能力の高い排風機を用いる必要
もないものとなる。In particular, since the exhaust gas is sent to the exhaust gas treating apparatus through the ducts 5 and 15 which can be attached to the exhaust port B1 provided in the electric furnace B, the ducts 5 and 15 are connected to the electric furnace B. It is no longer necessary to separately provide an opening for the electric furnace B, and there is no risk of secondary air entering the electric furnace B.
It is not necessary to use a high-performance exhaust fan in the exhaust gas treatment device.
【００１７】また、請求項２記載の原料予熱方法は、溶
解炉とした一方の電気炉Ａから発生する排ガスを、予熱
炉とした他方の電気炉Ｂ内に、相互の排気口を連通する
ダクト１を介して送給し、他方の電気炉Ｂ内に予め収納
しておいた原料を排ガスで予熱せしめ、この排ガスを、
電気炉Ｂに設けてある排滓口Ｂ１に装着自在なダクト
５，１５を介して排ガス処理装置に送給し、次に、一方
の電気炉Ａでの原料の溶解、出湯作業が終了した後、他
方の電気炉Ｂを溶解炉とし、一方の電気炉Ａを予熱炉と
し、溶解炉とした他方の電気炉Ｂから発生する排ガス
を、予熱炉とした一方の電気炉Ａ内にダクト１を介して
送給し、一方の電気炉Ａ内に収納せしめた原料を排ガス
で予熱せしめ、この排ガスを、一方の電気炉Ａに設けて
ある排滓口Ａ１に装着せしめたダクト５，１７を介して
排ガス処理装置に送給するので、予熱した原料を移動せ
しめることなく溶解できるようになり、原料の溶解作業
自体が簡単に行えるようになり、原料の熱損失も少なく
なると共に、原料の溶解時間の短縮、及び溶解に必要な
電気エネルギーの節約に役立ち、しかも、原料の予熱、
溶解作業が効率良く、経済的に行えるようになる。特
に、一対の電気炉Ａ，Ｂを交互に溶解炉、予熱炉とする
ので、電気炉Ａ，Ｂの残留熱を有効に利用できるように
なると共に、原料を能率良く溶解できるようになる。Further, in the raw material preheating method according to the second aspect of the present invention, the exhaust gas generated from one of the electric furnaces A, which is the melting furnace, is introduced into the other electric furnace B, which is the preheating furnace, so that the exhaust ports communicate with each other. The raw material that has been fed through 1 and stored in advance in the other electric furnace B is preheated with exhaust gas, and this exhaust gas is
After the exhaust gas treatment device is fed through the ducts 5 and 15 that can be attached to the slag outlet B1 provided in the electric furnace B, and then the raw material melting and tapping work in one electric furnace A are completed. , The other electric furnace B is used as a melting furnace, the one electric furnace A is used as a preheating furnace, and the exhaust gas generated from the other electric furnace B used as the melting furnace is provided with the duct 1 in the one electric furnace A used as the preheating furnace. The raw material stored in one of the electric furnaces A is preheated by the exhaust gas, and the exhaust gas is passed through the ducts 5 and 17 attached to the exhaust port A1 provided in the one electric furnace A. Since the preheated raw material can be melted without moving it because it is sent to the exhaust gas treatment equipment, the melting work of the raw material itself can be performed easily, heat loss of the raw material is reduced, and the melting time of the raw material is reduced. Of electricity and saving of electric energy required for melting Help, moreover, pre-heating of raw materials,
The melting work can be performed efficiently and economically. In particular, since the pair of electric furnaces A and B are alternately used as the melting furnace and the preheating furnace, the residual heat of the electric furnaces A and B can be effectively used and the raw materials can be efficiently melted.
【００１８】加えて、電気炉Ｂに設けてある排滓口Ｂ１
に装着自在なダクト５，１５を介して排ガスを排ガス処
理装置に送給するので、電気炉Ｂにダクト５，１５を連
結するための開口部を別途設ける必要がなくなり、電気
炉Ｂ内に二次空気が入り込む虞れがなくなり、ひいて
は、排ガス処理装置に於いて能力の高い排風機を用いる
必要もないものとなる。In addition, the slag outlet B1 provided in the electric furnace B
Since the exhaust gas is fed to the exhaust gas treatment device through the ducts 5 and 15 that can be attached to the electric furnace B, it is not necessary to separately provide an opening for connecting the ducts 5 and 15 to the electric furnace B, and the electric furnace B can be installed in the electric furnace B. There is no possibility that secondary air will enter, and it is therefore unnecessary to use a high-performance exhaust fan in the exhaust gas treatment device.
【図１】本発明の方法を実施する装置の概略平面図であ
る。1 is a schematic plan view of an apparatus for carrying out the method of the present invention.
【図２】本発明の他の方法を実施する装置の概略平面図
である。FIG. 2 is a schematic plan view of an apparatus for carrying out another method of the present invention.
Ａ 電気炉 Ｂ 電気
炉 Ａ１ 排滓口 Ｂ１ 排滓
口 １ ダクト ２ ダン
パ ３ ダンパ ５ ダクト ６ 密接
部 ７ ダンパ ８ ダク
ト ９ ダクト １０ ダン
パ １５ ダクト １６ ダン
パ １７ ダクト １８ ダン
パA electric furnace B electric furnace A1 slag outlet B1 slag outlet 1 duct 2 damper 3 damper 5 duct 6 close part 7 damper 8 duct 9 duct 10 damper 15 duct 16 damper 17 duct 18 damper
Claims (2)
排ガスを、予熱炉とした他方の電気炉内に、相互の排気
口を連通するダクトを介して送給し、他方の電気炉内に
予め収納しておいた原料を排ガスで予熱せしめ、この排
ガスを、電気炉に設けてある排滓口に装着自在なダクト
を介して排ガス処理装置に送給するようにしたことを特
徴とする溶解炉を利用した原料予熱方法。1. Exhaust gas generated from one electric furnace used as a melting furnace is fed into the other electric furnace used as a preheating furnace through a duct communicating exhaust ports with each other, and the other electric furnace is used. The pre-stored raw material is preheated with exhaust gas, and this exhaust gas is sent to the exhaust gas treatment device through a duct that can be attached to a slag outlet provided in the electric furnace. Raw material preheating method using a melting furnace.
排ガスを、予熱炉とした他方の電気炉内に、相互の排気
口を連通するダクトを介して送給し、他方の電気炉内に
予め収納しておいた原料を排ガスで予熱せしめ、この排
ガスを、電気炉に設けてある排滓口に装着自在なダクト
を介して排ガス処理装置に送給し、次に、一方の電気炉
での原料の溶解、出湯作業が終了した後、他方の電気炉
を溶解炉とし、一方の電気炉を予熱炉とし、溶解炉とし
た他方の電気炉から発生する排ガスを、予熱炉とした一
方の電気炉内にダクトを介して送給し、一方の電気炉内
に収納せしめた原料を排ガスで予熱せしめ、この排ガス
を、一方の電気炉に設けてある排滓口に装着せしめたダ
クトを介して排ガス処理装置に送給するようにしたこと
を特徴とする溶解炉を利用した原料予熱方法。2. Exhaust gas generated from one electric furnace used as a melting furnace is fed into the other electric furnace used as a preheating furnace through a duct connecting exhaust ports to each other, and the other electric furnace is used. The pre-stored raw material is preheated with exhaust gas, and this exhaust gas is sent to the exhaust gas treatment device through a duct that can be attached to the exhaust port provided in the electric furnace, and then one of the electric furnaces After the melting of the raw materials and the tapping work are completed, the other electric furnace is used as the melting furnace, one electric furnace is used as the preheating furnace, and the exhaust gas generated from the other electric furnace used as the melting furnace is used as the preheating furnace. Of the raw material stored in one of the electric furnaces is preheated by the exhaust gas, and the exhaust gas is attached to the exhaust port provided in the one electric furnace. The melting furnace is characterized in that the gas is fed to the exhaust gas treatment device via Preheating method for raw materials using
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27055495A JPH0989470A (en) | 1995-09-25 | 1995-09-25 | Method for preheating raw material by using a plurality of melting furnaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27055495A JPH0989470A (en) | 1995-09-25 | 1995-09-25 | Method for preheating raw material by using a plurality of melting furnaces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0989470A true JPH0989470A (en) | 1997-04-04 |
Family
ID=17487798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27055495A Pending JPH0989470A (en) | 1995-09-25 | 1995-09-25 | Method for preheating raw material by using a plurality of melting furnaces |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0989470A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102799649B1 (en) * | 2024-03-05 | 2025-04-25 | (주)칼텍에이엘 | Waste heat recovery type dust reduction continuous operation safe aluminum melting furnace |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05322449A (en) * | 1992-05-26 | 1993-12-07 | Nippon Steel Corp | Preheating control method in compound melting device |
| JPH06185879A (en) * | 1992-10-19 | 1994-07-08 | Nippon Steel Corp | Operation method of double arc furnace equipment |
-
1995
- 1995-09-25 JP JP27055495A patent/JPH0989470A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05322449A (en) * | 1992-05-26 | 1993-12-07 | Nippon Steel Corp | Preheating control method in compound melting device |
| JPH06185879A (en) * | 1992-10-19 | 1994-07-08 | Nippon Steel Corp | Operation method of double arc furnace equipment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102799649B1 (en) * | 2024-03-05 | 2025-04-25 | (주)칼텍에이엘 | Waste heat recovery type dust reduction continuous operation safe aluminum melting furnace |
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