JPS63192812A - Cu removing method in molten iron - Google Patents
Cu removing method in molten ironInfo
- Publication number
- JPS63192812A JPS63192812A JP62025109A JP2510987A JPS63192812A JP S63192812 A JPS63192812 A JP S63192812A JP 62025109 A JP62025109 A JP 62025109A JP 2510987 A JP2510987 A JP 2510987A JP S63192812 A JPS63192812 A JP S63192812A
- Authority
- JP
- Japan
- Prior art keywords
- carbon
- molten iron
- scrap
- flux
- hot metal
- 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
- 238000000034 method Methods 0.000 title claims description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title abstract description 18
- 229910052742 iron Inorganic materials 0.000 title abstract description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000002893 slag Substances 0.000 claims abstract description 18
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 16
- 230000004907 flux Effects 0.000 claims abstract description 16
- 238000002844 melting Methods 0.000 claims abstract description 11
- 230000008018 melting Effects 0.000 claims abstract description 11
- 229910052936 alkali metal sulfate Inorganic materials 0.000 claims abstract description 9
- 238000003756 stirring Methods 0.000 claims abstract description 5
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910001882 dioxygen Inorganic materials 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims description 27
- 239000002184 metal Substances 0.000 claims description 27
- 239000002245 particle Substances 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 8
- 239000003575 carbonaceous material Substances 0.000 claims description 6
- 239000000571 coke Substances 0.000 abstract description 8
- 239000011449 brick Substances 0.000 abstract description 3
- 238000009628 steelmaking Methods 0.000 abstract description 3
- 229910052783 alkali metal Inorganic materials 0.000 abstract description 2
- 150000001340 alkali metals Chemical class 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract 4
- 239000007832 Na2SO4 Substances 0.000 abstract 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 abstract 1
- 238000006477 desulfuration reaction Methods 0.000 abstract 1
- 230000023556 desulfurization Effects 0.000 abstract 1
- 229910052938 sodium sulfate Inorganic materials 0.000 abstract 1
- 235000011152 sodium sulphate Nutrition 0.000 abstract 1
- 239000010949 copper Substances 0.000 description 25
- 239000007789 gas Substances 0.000 description 6
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 4
- 229910000805 Pig iron Inorganic materials 0.000 description 3
- 238000007664 blowing Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 235000012255 calcium oxide Nutrition 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 238000005262 decarbonization Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000010436 fluorite Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 230000002195 synergetic effect Effects 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、高Ｃｕが混入している安価な車中スクラップ
を炭材と酸素ガスおよび／または空気を用いて溶解して
得られた溶銑を、高級スクラップや銑鉄で稀釈すること
なしに、〔Ｃｕ〕を目的とする許容値以下にする溶銑の
脱Ｃｕ方法に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention is directed to hot metal obtained by melting inexpensive car scrap containing high Cu using carbon material, oxygen gas, and/or air. The present invention relates to a method for removing Cu from hot metal in which [Cu] is reduced to below a target tolerance value without diluting with high-grade scrap or pig iron.
Ａ：黒鉛ルツボ実験で、Ｎａｇ ＳＯ４と該ＮａｔＳＯ
，の３のコークス粉を混ぜたフラックスを入れて脱Ｃｕ
する方法は公知である。（日本鉄鋼協会第５３回講演大
会講演大要（３９）溶銑の脱銅に関する研究参照）
Ｂ：黒鉛ルツボ実験で、Ｎａｇ ＳＯ４を添加すると共
に、粒状カーボンでカバーしながら脱Ｃｕする方法は公
知である。A: In the graphite crucible experiment, NagSO4 and the NatSO
Add flux mixed with coke powder from step 3 to remove Cu.
Methods for doing so are known. (Refer to the Abstracts of the 53rd Conference of the Iron and Steel Institute of Japan (39) Research on copper removal from hot metal) B: In the graphite crucible experiment, there is a known method for removing Cu while adding Nag SO4 and covering with granular carbon. be.
（ＢＬＡＳＴ ＦＵＲＮＡＣＥ ＆ ５ＴＥＥＬ ＰＬ
ＡＮＴ ＦＯＲ０ＣＴＯＢＥＲ，ＲＥＭＯＶＡＬ ＯＦ
ＣＯＰＰＥＲＦＲＯＭ ＩＲＯＮ（ＯＰＰＥＲ−ＣＡ
ＲＢＯＮ ＭＥＬＴＳ ＢＹ ＴＨＥ ＵＳＥ ＯＦ
ＳＯＤＩＵＭ ５ＵＬＦＩＤＥＳＬＡＧＳ参照）
〔発明が解決しようとする問題点〕
上記Ａの方法は、粒状カーボンの粒径によって急激な爆
発的反応が起り危険であるという問題がある。(BLAST FURNACE & 5TEEL PL
ANT FOR0CTOBER, REMOVAL OF
COPPERFROM IRON (OPPER-CA
RBON MELTS BY THE USE OF
(Refer to SODIUM 5ULFIDE SLAGS) [Problems to be Solved by the Invention] The above method A has the problem that a rapid explosive reaction occurs due to the particle size of the granular carbon, which is dangerous.
Ｂの方法においては浴面上の残留スラグ量によって脱Ｃ
ｕ率は大巾に変動するという問題がある。In method B, decarbonization is achieved by the amount of slag remaining on the bath surface.
The problem is that the u rate fluctuates widely.
本発明は、上記問題点を解決するためになされたもので
あって、スクラップを炭材と酸素ガスおよび／または空
気で溶解して得られた溶銑を耐火物の容器を用いて脱Ｃ
ｕする方法において、該溶銑の浴面上のスラグを１０
ｋｇ／ｔ以下まで除滓した後、アルカリ金属の硫酸塩を
含有するフラックスと、粒径が１ ｗ＋ｓ以上の炭素含
有物質を添加し、該溶銑を撹拌しながら脱Ｃｕ処理する
ことを特徴とする溶銑の脱Ｃｕ方法を提供するものであ
る。The present invention has been made to solve the above problems, and the present invention is to decarbonize the molten pig iron obtained by melting scrap with carbon material and oxygen gas and/or air using a refractory container.
In this method, the slag on the bath surface of the hot metal is
After removing the slag to below kg/t, a flux containing an alkali metal sulfate and a carbon-containing substance having a particle size of 1 W+s or more are added, and the hot metal is stirred to remove Cu. The present invention provides a method for removing Cu from hot metal.
ここで、前記耐火物とは、カーボン煉瓦以外の製鋼用耐
火物をいう。スクラップとは、自動車の解体屑を主とす
るプレス屑、ヘビー屑、シュレッダ−屑、ダライ粉、銑
鉄屑等をいう。Here, the refractory refers to a steelmaking refractory other than carbon bricks. Scrap refers to press scraps, heavy scraps, shredder scraps, milling powder, pig iron scraps, etc., which are mainly automobile dismantling scraps.
又、スクラップ溶解時に用いる炭材とは、塊吠コークス
、粉状コークス、石炭および微粉炭等を言い、Ｓがα７
％程度含育した低級品であってもよい。In addition, the carbon materials used during scrap melting include lump coke, powdered coke, coal, and pulverized coal, and S is α7.
It may also be a low-grade product containing about %.
本発明におけるスラグの除滓コントロールは重要な要件
である。すなわち、スクラップを溶解して得られた溶銑
を脱Ｃｕ処理する前の浴面上のスラグは１０ｋｇ／ｔ以
下に除滓しなければ脱Ｃｕ率は大巾に低下する。そこで
、スラグ量を１０ｈｇ／ｔ以下とした。（第１図）
本発明で用いるアルカリ金属の硫酸塩を含有するフラッ
クスとしてはＮａｇ ＳＯ４、Ｋｍ ＳＯ４等がある。Slag removal control in the present invention is an important requirement. That is, unless the slag on the bath surface is reduced to 10 kg/t or less before the Cu removal treatment of the hot metal obtained by melting the scrap, the Cu removal rate will be significantly reduced. Therefore, the slag amount was set to 10 hg/t or less. (Fig. 1) Examples of the flux containing an alkali metal sulfate used in the present invention include Nag SO4 and Km SO4.
更に脱Ｃｕ処理時に用いる炭素含有物質としては、コー
クス、黒鉛、石炭、カーボン等、Ｃが主成分のものであ
れば良いが、その粒径を１■■以上にコア ） ｃｙ−
ルしなければ溶銑に添加時にアルカリ金属の硫酸塩と爆
発的に反応が起り、溶銑が飛散し極めて危険である。そ
こで、その粒径を１■１以上とした。Furthermore, the carbon-containing substance used during the Cu removal process may be one whose main component is C, such as coke, graphite, coal, carbon, etc., but the particle size should be 1■■ or more (core).
If this is not done, an explosive reaction will occur with the alkali metal sulfate when added to hot metal, causing the hot metal to scatter and be extremely dangerous. Therefore, the particle size was set to 1×1 or more.
炭素含を物質の添加量としては、アルカリ金属の硫酸塩
を含有するフラックスＷｋ １００ ｋｇ／ｌ に対し
て１０ｋｇ／ｌから３５ ｋｇ／ を程度添加するのが
好ましい。しかしながらフラックス添加前のＣが飽和よ
り低い場合は、さらに飽和になるように増量する必要が
ある。（第２図）
炭素含を物質の添加時期としては、アルカリ金属の硫酸
塩を含有するフラックス添加前に添加してもよいが、フ
ラックスと共に添加してもよい。The amount of the carbon-containing substance added is preferably about 10 kg/l to 35 kg/l per 100 kg/l of the flux Wk containing an alkali metal sulfate. However, if the C content before addition of the flux is lower than saturation, it is necessary to increase the amount to further saturate the flux. (Fig. 2) The carbon-containing substance may be added before the addition of the flux containing the alkali metal sulfate, or may be added together with the flux.
いずれにしても、フラックスおよび炭素含有物質の添加
時期としては、スラグの除滓コントロ、−ル後であるこ
とが必要である。添加方法としては、上置方式でもよい
が、アルカリ金属の硫酸塩は蒸発しやすいので分段方式
が好ましい。また、Ｎ、。In any case, it is necessary to add the flux and the carbon-containing substance after the slag removal control. Although the addition method may be a top-down method, a staged method is preferred since alkali metal sulfates are easily evaporated. Also, N.
Ａｒ ガスをキャリアガスとしてインジェクシジンする
方式等も良い。A method of injecting Ar gas as a carrier gas may also be used.
溶銑の撹拌方法としては、転炉形式の炉の場合は、炉底
羽口からＮ、 、 Ａｒ、 Ｃｏｔ 、 ＣＯ等のガス
を導入して撹拌するのが一般的である。又鍋中で処理す
る場合は、同様のガスを鍋底部に設けたポーラスプラグ
を用いて撹拌するか、上部よりパイプ状の浸漬ランスを
用いて撹拌してもよい。In the case of a converter-type furnace, hot metal is generally stirred by introducing a gas such as N, Ar, Cot, or CO through the bottom tuyere. When processing in a pot, the same gas may be stirred using a porous plug provided at the bottom of the pot, or may be stirred from the top using a pipe-shaped immersion lance.
溶銑中の（Ｃ）と脱Ｃｕ率の関係を第２図に示すが（Ｃ
）が高い方が脱Ｃｕ率は向上する。又（Ｓ）と脱Ｃｕ率
の関係を第３図に示すが、（Ｓ〕が高い程脱Ｃｕ率は向
上する傾向にあることも知見した。Figure 2 shows the relationship between (C) in hot metal and the Cu removal rate.
) is higher, the Cu removal rate is improved. Furthermore, the relationship between (S) and the Cu removal rate is shown in FIG. 3, and it was also found that the higher the (S), the more the Cu removal rate tends to improve.
従って、Ｓの高い安価な炭材を用いてスクラップを溶解
し、得られた高Ｓの溶銑の脱Ｃｕに特に育効である。更
に、脱Ｃｕ処理する場合の容器としてはカーボンライニ
ングしたものでは熱ａスおよび消費が多いことから、Ｍ
ｇＯ，マグカーボンレンガ等の通常の製鋼用耐火物でラ
イニングしたものの方が好ましい。Therefore, it is particularly effective for removing Cu from high S hot metal obtained by melting scrap using an inexpensive carbon material with high S content. Furthermore, when using a carbon-lined container for Cu-removal treatment, it consumes a lot of heat and heat, so M
It is preferable to use a refractory lined with ordinary steel-making refractories such as gO or mag carbon bricks.
以上の如く、本発明者等は、安価な市中スクラップを溶
解した後、高Ｃｕ溶銑の脱Ｃｕについて種々実験を重ね
た結果、溶銑の浴面上のスラグ除滓コントロールとアル
カリ金属の硫酸塩を含有するフラックスと粒径コントロ
ールした炭素含有物質の添加によって脱Ｃｕ１脱Ｓが同
時に効率よく進行することに加えて脱Ｐ作用も進行する
ことを知見した。As described above, the present inventors conducted various experiments on removing Cu from high-Cu hot metal after melting inexpensive commercial scrap, and as a result, the inventors found that the control of slag removal on the hot metal bath surface and the sulfate of alkali metal It has been found that by adding a flux containing carbon and a carbon-containing substance whose particle size is controlled, not only deCu1 and S removal proceed efficiently at the same time, but also deP action proceeds.
〈実施例１〉
炉底に羽口を有し％ ０４ 、 Ｎｔ 、 Ａ ｒ ガ
スが底吹き可能ｆＬマグカーボンでライニングした上下
吹き転炉を用い、市中スクラップ２ ｔｏｎをコークス
０．４５ｔｏｎとＯ，ガス ４５ＯＮ♂を使って溶解し
、表１に示す成分の溶銑を得た。<Example 1> Using a top-bottom blowing converter lined with fL Mag carbon that has tuyeres at the bottom and allows bottom-blowing of % 04 , Nt , and Ar gases, 2 tons of municipal scrap was mixed with 0.45 tons of coke and O , gas 45ON♂ was used to obtain hot metal having the components shown in Table 1.
この溶銑を、該上下吹き転炉に入れたままスクラップ溶
解時に発生したスラグを５ｋｇ／ｌまで除滓した後、Ｎ
ａｇ ＳＯ４１１００ｈ／ｌ と粒径３龍のコークス３
０ ｋｇ／ ｔを分役し、炉底よりＮ、ガスα５ Ｎｎ
ｔ’／ｌ 、ｍｉｎで撹拌しながら脱Ｃｕ処理を行った
。This hot metal was kept in the top-bottom blowing converter and the slag generated during scrap melting was removed to 5 kg/l, and then N
ag SO41100h/l and particle size 3 dragon coke 3
0 kg/t is divided into parts, and N and gas α5 Nn are added from the bottom of the furnace.
The Cu removal process was performed while stirring at t'/l, min.
得られた溶湯を表１に示す。Table 1 shows the obtained molten metal.
表１ 溶湯成分・温度
〈実施例２〉
実施例１と同様の方法でＸ Ｎａｇ ＳＯ４の代りに、
Ｋ、ＳＯ４を１００ ｋｇ／ｔ添加した。処理前後の成
分を表２に示す。Table 1 Molten metal components and temperature (Example 2) In the same manner as in Example 1, instead of X Nag SO4,
K and SO4 were added at 100 kg/t. Table 2 shows the components before and after treatment.
（以下余白）
表２ 溶湯成分・温度
く比較例１〉
実施例１と同条件であるが、スクラップ溶解後のＣａＯ
／Ｓ ｊＯ，＝ １．７のスラグを２０ ｈｇ／ を残
した状歯で同様の処理を実施した。結果を表３に示す。(Left below) Table 2 Molten metal composition/temperature Comparative Example 1> Same conditions as Example 1, but CaO after scrap melting
A similar treatment was performed on a tooth with a slag of /S jO, = 1.7, with 20 hg/ remaining. The results are shown in Table 3.
表３．溶湯成分・温度 脱Ｃｕは悪化した。Table 3. Molten metal composition/temperature Cu removal worsened.
く比較例２〉
実施例１と同様であるが、α１〜α３龍のコークスを用
いた。その結果、フラックス添加と共に爆発音がし、粒
鉄が飛散した。Comparative Example 2> Same as Example 1, but α1 to α3 coke was used. As a result, an explosion was heard as the flux was added, and granulated iron was scattered.
以上説明した如く本発明は、高Ｃｕ含を量の安価な車中
スクラップを高Ｓを含有した安価な炭材と酸素および／
または空気を用いて従来の炉で溶解でき、しかも耐火物
容器内で溶銑の浴面上のスラグをｌＯｈ客／ｔ以下まで
除滓コントロールした後、アルカリ金属の硫酸塩を含有
するフラックスと粒径１■■以上の炭素含を物質を添加
して撹拌することにより、脱Ｃｕ１脱Ｐ１脱Ｓ処理が同
時に進行し、これらの相乗効果によって極めて安価なス
クラップ溶湯が得られるという効果がある。As explained above, the present invention uses inexpensive car scrap with a high Cu content, an inexpensive carbon material with a high S content, and oxygen and/or
Alternatively, it can be melted in a conventional furnace using air, and after controlling the slag on the surface of the hot metal bath in a refractory container to less than 1Oh customer/ton, it is possible to melt the flux containing alkali metal sulfate and the particle size. By adding and stirring a substance containing 1■■ or more carbon, the Cu, P, and S removal processes proceed at the same time, and the synergistic effect of these processes produces an extremely inexpensive molten scrap.
又、該脱Ｃｕ処理後の溶湯のスラグを除去した後継続し
て転炉内で生石灰とドロマイトおよびホタル石を投入し
て脱Ｃ精錬すれば更に低置な鋼の製造方法が可能である
。In addition, if the slag of the molten metal after the Cu-removal treatment is removed and the carbon-removed smelting is continued by charging quicklime, dolomite, and fluorite in a converter, an even lower-temperature steel manufacturing method is possible.
第１図はスクラップ溶解時の残留スラグ量と脱Ｃｕ率の
関係を示す図、第２図は処理後（Ｃ）と脱Ｃｕ率の関係
を示す図、！３図は脱Ｃｕ率に及ぼす（Ｓ）の影響を示
す図である。Figure 1 is a diagram showing the relationship between the amount of slag remaining during scrap melting and the Cu removal rate, and Figure 2 is a diagram showing the relationship between the amount of slag after treatment (C) and the Cu removal rate. FIG. 3 is a diagram showing the influence of (S) on the Cu removal rate.
Claims (1)
して得られた溶銑を耐火物容器内で脱Ｃｕする方法にお
いて、該溶銑の浴面上のスラグを１０ｋｇ／ｔ以下まで
除滓した後、アルカリ金属の硫酸塩を含有するフラック
スと、粒径が１ｍｍ以上の炭素含有物質を添加し、該溶
銑を撹拌しながら脱Ｃｕ処理することを特徴とする溶銑
の脱Ｃｕ方法。In a method of removing Cu from hot metal obtained by melting scrap with carbon material and oxygen gas and/or air in a refractory container, after removing slag on the bath surface of the hot metal to 10 kg/t or less, A method for removing Cu from hot metal, which comprises adding a flux containing an alkali metal sulfate and a carbon-containing substance having a particle size of 1 mm or more, and removing Cu from the hot metal while stirring the hot metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62025109A JPS63192812A (en) | 1987-02-05 | 1987-02-05 | Cu removing method in molten iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62025109A JPS63192812A (en) | 1987-02-05 | 1987-02-05 | Cu removing method in molten iron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63192812A true JPS63192812A (en) | 1988-08-10 |
Family
ID=12156759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62025109A Pending JPS63192812A (en) | 1987-02-05 | 1987-02-05 | Cu removing method in molten iron |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63192812A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009110627A1 (en) * | 2008-03-05 | 2009-09-11 | Ｊｆｅスチール株式会社 | Process for removal of copper contained in steel scraps |
-
1987
- 1987-02-05 JP JP62025109A patent/JPS63192812A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009110627A1 (en) * | 2008-03-05 | 2009-09-11 | Ｊｆｅスチール株式会社 | Process for removal of copper contained in steel scraps |
| JP2010133002A (en) * | 2008-03-05 | 2010-06-17 | Jfe Steel Corp | Method for removing copper contained in steel scraps |
| KR101276921B1 (en) * | 2008-03-05 | 2013-06-19 | 제이에프이 스틸 가부시키가이샤 | Method for removing copper in steel scraps |
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