JPS62243709A - Compound type melting installation - Google Patents
Compound type melting installationInfo
- Publication number
- JPS62243709A JPS62243709A JP61087280A JP8728086A JPS62243709A JP S62243709 A JPS62243709 A JP S62243709A JP 61087280 A JP61087280 A JP 61087280A JP 8728086 A JP8728086 A JP 8728086A JP S62243709 A JPS62243709 A JP S62243709A
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- scrap
- melting
- molten metal
- oxygen
- 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
- 238000002844 melting Methods 0.000 title claims abstract description 63
- 230000008018 melting Effects 0.000 title claims abstract description 63
- 150000001875 compounds Chemical class 0.000 title 1
- 238000009434 installation Methods 0.000 title 1
- 239000002184 metal Substances 0.000 claims abstract description 20
- 239000003575 carbonaceous material Substances 0.000 claims abstract description 16
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000001301 oxygen Substances 0.000 claims abstract description 15
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 15
- 238000007664 blowing Methods 0.000 claims abstract description 6
- 230000009977 dual effect Effects 0.000 claims description 5
- 239000000155 melt Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract description 7
- 238000002485 combustion reaction Methods 0.000 abstract description 4
- 239000002826 coolant Substances 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 9
- 238000010079 rubber tapping Methods 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 239000004020 conductor Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、共用する一つの溶解電源設備を備えた複式溶
解設備に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a multiple melting facility equipped with one shared melting power supply facility.
金属スクラップの溶解を行なう炉としては、従来、主に
アーク炉が使用されていたが、近年省電力化を図るため
、電力より安価な酸素や炭材エネルギーを利用した吹込
み溶解の採用が注目され、試みられつつある。In the past, arc furnaces were mainly used as furnaces for melting metal scrap, but in recent years, in order to save electricity, the use of blow melting that uses oxygen and carbon energy, which is cheaper than electricity, has been attracting attention. and is being attempted.
この吹込み溶解は、炉内に炭材・酸素などを吹込んで、
その反応熱を利用してスクラップを溶解させるものであ
り、このため、炉内に予め初期溶湯を確保しておく必要
がある。This blow melting involves blowing carbonaceous material, oxygen, etc. into the furnace.
The heat of reaction is used to melt the scrap, so it is necessary to secure an initial molten metal in the furnace in advance.
この点、従来の炭材吹込み溶解においては、（１）溶解
炉にスクラップを入れた後、溶解炉中でアーク溶解によ
りスクラップの一部を溶解して、吹込みに必要な初期ｗ
ｊＷＡを造る。In this regard, in conventional carbon material injection melting, (1) after putting scrap into a melting furnace, a part of the scrap is melted by arc melting in the melting furnace, and the initial w
jBuild a WA.
（２）出鋼時に全量を出鋼せずに、次の操業に必要な箔
だけ残湯を残しておく（残湯方式）。(2) At the time of tapping, the entire amount is not tapped, leaving only the foil necessary for the next operation (remaining metal method).
しかしながら、前者の（１）の方式にあっては、吹込み
開始時期が遅れるため、本格的な省電力化ならびに生産
性の向上を達成できないという問題がある。また、後者
の（２）の方式では、炉内に残湯を残すので、生産性が
悪い上に、出鋼後に炉床の補昨作業を行なうことができ
ないという問題がある。However, in the former method (1), there is a problem that full-scale power saving and productivity improvement cannot be achieved because the blowing start time is delayed. In addition, in the latter method (2), residual metal remains in the furnace, resulting in poor productivity and the problem that the hearth cannot be repaired after tapping.
本発明は、上記事情に鑑みてなされたもので、その目的
とするところは、出鋼時に全口出鋼することができる上
に、操業開始と同時に炭材・酸素などの吹込み溶解が可
能となり、省電力化を図ることができ、かつ電力料金の
安い時間帯、高い時間帯での操業のやり方に柔軟性をも
たせ、合理的な操業ができると共に、段端の共用化、稼
働率の向上等を図ることができる複式溶解設備を提供す
ることにある。゛
〔問題点を解決するための手段〕
上記目的を達成するために、本発明は、主として、炭素
や酸素などの燃料を吹込むことによりスクラップを溶解
する溶解炉と、該溶解炉でスクラップを溶解する際に必
要な初期溶湯を生産する供給炉と、該供給炉にて生産し
た初期溶湯を上記溶解炉に供給する供給機構と、上記溶
解炉及び供給炉が共用する一つの溶解電源設備とを備え
たものである。The present invention was made in view of the above circumstances, and its purpose is to be able to fully tap the steel at the time of tapping, and also to be able to melt by blowing carbonaceous material, oxygen, etc. at the same time as the start of operation. This makes it possible to save electricity, provide flexibility in operating methods during low and high electricity rates, and enable rational operations, as well as common use of stage ends and improved operating rates. The object of the present invention is to provide a dual melting equipment that can be improved. [Means for Solving the Problems] In order to achieve the above object, the present invention mainly provides a melting furnace that melts scrap by injecting fuel such as carbon or oxygen, and a method for melting scrap in the melting furnace. A supply furnace that produces the initial molten metal necessary for melting, a supply mechanism that supplies the initial molten metal produced in the supply furnace to the melting furnace, and one melting power supply facility that is shared by the melting furnace and the supply furnace. It is equipped with the following.
本発明の複式溶解設備にあっては、供給炉で生産された
初期溶湯を供給機構によって溶解炉に供給して、溶解炉
において順次炭材・酸素などを吹込んで炉内のスクラッ
プを溶解し、出鋼時には全口出鋼する。また、必要に応
じて、電力料金の安い夜間等の時間帯には、上記供給炉
に給電していた電力を、一つの共用の溶解電源設備によ
って、溶解炉に振向け、吹込み溶解と併用して、スクラ
ップを迅速にかつ大部に溶解する。In the dual melting equipment of the present invention, the initial molten metal produced in the supply furnace is supplied to the melting furnace by the supply mechanism, and the scrap in the furnace is melted by sequentially blowing carbon material, oxygen, etc. into the melting furnace, At the time of tapping, all the holes are tapped. In addition, if necessary, during times such as nighttime when electricity rates are low, the power that was being supplied to the above-mentioned supply furnace can be redirected to the melting furnace using one shared melting power source, and used for blow melting. to dissolve scrap quickly and in bulk.
以下、図面に基づいて本発明の一実施例を説明する。 Hereinafter, one embodiment of the present invention will be described based on the drawings.
図は本発明の一実施例で、二基の溶解炉と一基の初１１
１１ｍｒａ供給用の炉で構成された複式溶解設備の説明
図であり、図中符号１Ａ及び１Ｂは溶解炉の炉体であり
、各炉体１Ａ、１Ｂは、それぞれ炭材・酸素などの吸込
み溶解とアーク溶解件を併用できる構成とされている。The figure shows one embodiment of the present invention, with two melting furnaces and one melting furnace.
It is an explanatory diagram of a dual melting facility composed of a furnace for supplying 11 mra, and in the figure, symbols 1A and 1B are the furnace bodies of the melting furnace, and each furnace body 1A and 1B is used for suction melting of carbonaceous materials, oxygen, etc. The structure is such that it can be used in conjunction with arc melting.
そして、各炉体ＩＡ。And each furnace body IA.
１Ｂには、それぞれ出鋼用のスパウト（出鋼用樋）２Ａ
、２Ｂが設けられている。また、両炉体１Ａ。1B has a spout for tapping (steel tapping gutter) 2A, respectively.
, 2B are provided. Also, both furnace bodies 1A.
１Ｂの間には初期溶湯供給用の溶解炉の炉体３が設置さ
れている。この炉体３の出湯口３ａには、供給角樋４が
旋回自在に設けられており、この供給角樋４の先端部は
、旋回することにより、各スパウト２Ａ、２Ｂ上に位置
するようになっている。A furnace body 3 of a melting furnace for supplying initial molten metal is installed between 1B. A supply square gutter 4 is rotatably provided at the outlet 3a of the furnace body 3, and the tip of the supply square gutter 4 is positioned above each spout 2A, 2B by turning. It has become.
さらに、５は電極、６は二次側導体、７は給電用の可撓
ケーブル、８は電源（炉用変圧器）を示しており、これ
らの電極５．二次側導体６．可撓ケーブル７、￥ｌｉ源
８は３炉共用である。また、電極５、二次側導体６．炉
Ｍ９等の３炉共用の電極・炉蓋ｒｇＪ連装置１０は、移
動機構（図示せず）によって、上記各炉体１Ａ、１８．
３の上方位置に旋回移動可能に設けられている。Further, 5 is an electrode, 6 is a secondary conductor, 7 is a flexible cable for power supply, and 8 is a power source (furnace transformer). Secondary conductor 6. The flexible cable 7 and the li source 8 are shared by the three furnaces. In addition, an electrode 5, a secondary conductor 6. The electrode/furnace cover rgJ connection device 10, which is commonly used for three furnaces such as the furnace M9, is moved by a moving mechanism (not shown) to each of the furnace bodies 1A, 18.
It is rotatably provided at a position above 3.
上記のように構成された複式溶解設備において、まず通
常の省電力操業を行なう場合について説明する。図にお
いて、炉体１Ａを操業中（溶解中）、炉体１Ｂを操業待
機中（予熱中）とすると、今、操業中の炉体１Ａでは、
炭材・酸素などが吸込まれ、該炉体１Ａ内に装入されて
いるスクラップが溶解されている。一方、操業待機中の
炉体１Ｂでは、操業中の炉体１Ａからの高温の排ガスが
排ガスダクト（図示せず）を介して導入され、炉体１Ｂ
に装入されたスクラップが予熱されている。なお、この
場合、操業中の炉体１Ａにおいては、大間の可燃ガス（
Ｃｏ）が発生するので、操業￥ｌｌ１ｌ中の炉体１Ｂ内
に導入する前に、一旦燃焼室で燃焼させた後、この燃焼
ガスを炉体１Ｂ内に導いてもよい。First, a case will be described in which a normal power-saving operation is performed in the dual melting equipment configured as described above. In the figure, if the furnace body 1A is in operation (melting) and the furnace body 1B is on standby (preheating), then in the furnace body 1A currently in operation,
Carbon material, oxygen, etc. are sucked in, and the scrap charged into the furnace body 1A is melted. On the other hand, in the furnace body 1B that is on standby for operation, high-temperature exhaust gas from the furnace body 1A that is in operation is introduced via an exhaust gas duct (not shown), and
The scrap charged into the tank is preheated. In this case, in the furnace body 1A during operation, Oma's combustible gas (
Since Co) is generated, the combustion gas may be once combusted in the combustion chamber and then introduced into the furnace body 1B before being introduced into the furnace body 1B during operation.
そして、操業中の炉体１Ａの操業が終了する直前に供給
炉の炉体３から、吸込み溶解のための初期溶湯を供給用
１６４及びスパウト２Ｂを介して待機中の炉体１Ｂに供
給する。次いで、炉体１Ａの操業終了と１Ｆｉ１時に、
炉体１Ｂでの操業を開始する。Immediately before the operation of the furnace body 1A in operation ends, initial molten metal for suction melting is supplied from the furnace body 3 of the supply furnace to the waiting furnace body 1B via the supply 164 and the spout 2B. Next, at the end of the operation of the furnace body 1A and at 1Fi1,
Start operation in furnace body 1B.
すなわち、炉体１Ｂ内に炭材・ＲｌＫなどを吸込み、ス
クラップの溶解を開始する。一方、操業を終了した炉体
１Ａは、出鋼作業を行ない、この出鋼作業完了後、炉体
１Ａの補修を行なって新たにスクラップを装入し、操業
中の炉体１Ｂからの高温排ガスを導入してスクラップの
予熱を開始する。以上の工程を各炉体ＩＡ、ＩＢ間で交
互に繰返して省電力操業を行なう。なお、初期溶湯供給
用の炉体３では、適宜スクラップを装入し、上記各炉体
１Ａ、１Ｂ用の初期溶湯を保持してお（。That is, carbonaceous material, RlK, etc. are sucked into the furnace body 1B and melting of scrap is started. On the other hand, the furnace body 1A that has finished its operation performs steel tapping work, and after the completion of this steel tapping work, the furnace body 1A is repaired and new scrap is charged. to start preheating the scrap. The above steps are repeated alternately between each furnace body IA and IB to perform power saving operation. In the furnace body 3 for supplying initial molten metal, appropriate scrap is charged to hold the initial molten metal for each of the furnace bodies 1A and 1B.
７ ′
また、夜間などの電力料金が安い時間帯においては、電
極５．二次側導体６．炉蓋９等の３炉共用の電極・炉Ｕ
ｔ１［］連装装１０を図示しない移動装置によって上記
各炉体１Ａもしくは１Ｂ側に移動して、各炉体ＩＡ、１
Ｂで炭材・酸素などの吸込み溶解の前工程に通電溶解（
アーク溶解）を行ない、迅速かつ大」にスクラップの溶
解を行なうことが可能である。さらに、各炉体１Ａ、１
Ｂにおいてスクラップの予熱を行なう場合に、スクラッ
プの加熱効率を高めるため、排ガスが通りにくいスクラ
ップの中央部に、予熱工程前にアークにて通風路を形成
する、いわゆるポーリングを行なうこともできる。7' Also, during times when electricity rates are low, such as at night, electrode 5. Secondary conductor 6. Electrodes and furnace U that are shared by the three furnaces, such as the furnace lid 9
t1 [] The multiple mounting equipment 10 is moved to each of the above-mentioned furnace bodies 1A or 1B side by a moving device (not shown), and each of the furnace bodies IA, 1
In B, electrification melting (
It is possible to quickly and extensively melt scrap by performing arc melting). Furthermore, each furnace body 1A, 1
When preheating the scrap in step B, in order to increase the heating efficiency of the scrap, it is also possible to perform so-called poling, in which a ventilation path is formed using an arc in the center of the scrap, where it is difficult for exhaust gas to pass through, before the preheating step.
なお、本発明の実施例においては、三相交流アーク炉の
例で説明したが、これに限定されるものではなく、直流
アーク炉、燃焼炉などの溶解炉でｂ良いことは勿論であ
る。In the embodiments of the present invention, a three-phase AC arc furnace has been described as an example, but the present invention is not limited to this, and it goes without saying that a melting furnace such as a DC arc furnace or a combustion furnace may be used.
以上説明したように、本発明は、溶解炉に、炭材・酸素
などの吸込み溶解を行なうための初期溶湯を溶解、供給
する別の溶解炉（供給炉）を備えたことを特徴としてい
る。従って、
１）残湯を残すことなく全早出鋼でき、かつ操業（溶解
）開始と同時に炭材・酸素などの吸込み溶解を行なうこ
とができるため、大幅に省電力化を図ることができる。As described above, the present invention is characterized in that the melting furnace is equipped with another melting furnace (supply furnace) for melting and supplying initial molten metal for suctioning and melting carbonaceous material, oxygen, etc. Therefore, 1) All steel can be drawn out quickly without leaving any residual metal, and carbonaceous material, oxygen, etc. can be sucked and melted at the same time as the start of operation (melting), resulting in significant power savings.
２）初期溶湯用の供給炉と溶解炉の電源を共用するため
経済的である。2) It is economical because the power supply for the supply furnace for the initial molten metal and the melting furnace are shared.
３）昼間の電力料金の＾い時間帯には、炭材・酸素など
の吸込みによる省電力・脱電力操業を行ない、夜間など
の電力料金の安い時間帯には炭材・酸素などの吸込み溶
解のほか、電力を積極的に利用して迅速０人聞生産を行
なうことができ、柔軟性のある合理的な操業が可能とな
る。3) During daytime hours when electricity rates are low, power-saving and power-saving operations are performed by sucking in carbonaceous materials and oxygen, and during times when electricity rates are low such as at night, carbonaceous materials and oxygen are sucked in and dissolved. In addition, it is possible to perform production quickly and without any labor by actively utilizing electricity, which enables flexible and rational operation.
４）造塊工程などの溶解工程の模工程においてトラブル
が発生した際に、溶湯を溶解炉に戻す、いわゆる湯戻し
を行なう場合に、この濡戻しを供給炉に対して行なうこ
とができるから、溶解炉の操業を停止することがなく、
稼動率の向上を図れる。4) When a trouble occurs in a simulated melting process such as an ingot making process, when the molten metal is returned to the melting furnace, so-called hot water re-wetting, this re-wetting can be performed on the supply furnace. There is no need to stop the operation of the melting furnace,
It is possible to improve the operating rate.
図は本発明の一実施例を示す平面図である。
１Ａ、１Ｂ・・・用溶解炉の炉体、３・・・・・・溶解
炉（供給炉）の炉体、４・・・・・・供給用樋、８・旧
・・ｇ１ｓ！（炉用変圧器）。The figure is a plan view showing one embodiment of the present invention. 1A, 1B...Furnace body of melting furnace, 3...Furnace body of melting furnace (supply furnace), 4...Gutter for supply, 8...old...g1s! (furnace transformer).
Claims (2)
溶解する溶解炉と、該溶解炉でスクラップを溶解する際
に必要な初期溶湯を生産する供給炉と、該供給炉にて生
産した初期溶湯を上記溶解炉に供給する供給機構と、上
記溶解炉及び供給炉が共用する一つの溶解電源設備とを
備えたことを特徴とする複式溶解設備。(1) A melting furnace that melts scrap by blowing carbonaceous material and oxygen into it, a supply furnace that produces the initial molten metal necessary for melting scrap in the melting furnace, and an initial molten metal produced in the supply furnace. A dual melting facility comprising: a supply mechanism for supplying the melting furnace to the melting furnace; and one melting power supply facility shared by the melting furnace and the supply furnace.
特許請求の範囲第１項記載の複式溶解設備。(2) The multiple melting equipment according to claim 1, characterized in that the melting furnace is composed of a plurality of units.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61087280A JPS62243709A (en) | 1986-04-16 | 1986-04-16 | Compound type melting installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61087280A JPS62243709A (en) | 1986-04-16 | 1986-04-16 | Compound type melting installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62243709A true JPS62243709A (en) | 1987-10-24 |
Family
ID=13910373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61087280A Pending JPS62243709A (en) | 1986-04-16 | 1986-04-16 | Compound type melting installation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62243709A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002097512A (en) * | 2000-09-22 | 2002-04-02 | Daido Steel Co Ltd | Production method for molten steel |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60174812A (en) * | 1984-02-16 | 1985-09-09 | Kawasaki Steel Corp | Converter steel making method using large amount of ferrous cold charge |
| JPS62188716A (en) * | 1986-02-13 | 1987-08-18 | Ishikawajima Harima Heavy Ind Co Ltd | Melting method for scrap |
-
1986
- 1986-04-16 JP JP61087280A patent/JPS62243709A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60174812A (en) * | 1984-02-16 | 1985-09-09 | Kawasaki Steel Corp | Converter steel making method using large amount of ferrous cold charge |
| JPS62188716A (en) * | 1986-02-13 | 1987-08-18 | Ishikawajima Harima Heavy Ind Co Ltd | Melting method for scrap |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002097512A (en) * | 2000-09-22 | 2002-04-02 | Daido Steel Co Ltd | Production method for molten steel |
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