JPH09235631A - Method for removing iron from iron-containing molten aluminum - Google Patents
Method for removing iron from iron-containing molten aluminumInfo
- Publication number
- JPH09235631A JPH09235631A JP4373196A JP4373196A JPH09235631A JP H09235631 A JPH09235631 A JP H09235631A JP 4373196 A JP4373196 A JP 4373196A JP 4373196 A JP4373196 A JP 4373196A JP H09235631 A JPH09235631 A JP H09235631A
- Authority
- JP
- Japan
- Prior art keywords
- molten
- added
- compound
- alloy
- molten aluminum
- 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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Classifications
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- 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
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はＡｌまたはＡｌ合金
を精製する方法に関し、詳細にはＡｌまたはＡｌ合金ス
クラップを溶解したＡｌ溶湯から不純物元素であるＦｅ
を除去する方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for purifying Al or an Al alloy, and more specifically, Fe which is an impurity element from an Al melt obtained by melting Al or Al alloy scrap.
It is about the method of removing.
【０００２】[0002]
【従来の技術】Ａｌ及びＡｌ合金は、その優れた表面美
麗性，軽量性，加工性等から建築材料，自動車材料，飲
料缶など多方面にわたって利用されており、最近では資
源の有効利用の観点からリサイクルが積極的に進められ
ている。但し、ＡｌまたはＡｌ合金のスクラップを回収
する際にはＡｌまたはＡｌ合金以外の金属材料または非
金属材料が混入することが一般的であり、Ｆｅ等の不純
物元素が混入すると共晶化合物が粗大化する等の不都合
が生じ、強度，靭性，表面処理性などが著しく劣化する
という問題がある。そこで不純物の分離・除去に関する
技術が種々提案されており、例えばＦｅの除去技術につ
いては、固体選別法，偏析法，電気分解法，化合物法等
が知られている。2. Description of the Related Art Al and Al alloys have been used in various fields such as building materials, automobile materials, and beverage cans due to their excellent surface beauty, light weight, workability, etc., and recently, effective utilization of resources has been considered. Since then, recycling is being actively promoted. However, when recovering scraps of Al or Al alloy, it is common to mix metal materials or non-metal materials other than Al or Al alloys, and if an impurity element such as Fe is mixed, the eutectic compound becomes coarse. There is a problem in that strength, toughness, surface treatability, etc. are significantly deteriorated. Therefore, various techniques regarding separation / removal of impurities have been proposed. For example, as a technique for removing Fe, a solid sorting method, a segregation method, an electrolysis method, a compound method and the like are known.
【０００３】固体選別法は、Ｆｅ製品を磁力により選別
して除去する方法であり、Ｆｅ製品がＡｌ製品と分別可
能な状態で夫々独立して存在している場合はよいが、Ａ
ｌ製品にＦｅ製のねじや釘などに係合している場合には
磁力を用いての選別除去はできないので、Ｆｅを完全に
は除去することができず、別の除去法を併用する必要が
ある。The solid sorting method is a method of magnetically sorting and removing Fe products, and it is good if Fe products exist independently of Al products in a state where they can be separated.
l If the product is engaged with Fe screws or nails, it cannot be selectively removed using magnetic force, so Fe cannot be completely removed, and another removal method must be used in combination. There is.
【０００４】偏析法は、Ａｌ溶湯を冷却していくと純度
の高いＡｌが先に凝固する原理を用いる方法であり、例
えば特開昭６１−１６６９２９号公報等に開示されてい
るが、生産性が非常に悪いという問題を有していた。The segregation method is a method that uses the principle that high-purity Al solidifies first as the molten aluminum is cooled, and is disclosed in, for example, Japanese Patent Application Laid-Open No. 61-166929. Had the problem of being very bad.
【０００５】電気分解法は、電気分解によって不純物を
陽極に残し、高純度Ａｌを陰極に集める方法であり、例
えば特公昭６２−１０３１５号公報に開示されている
が、非常に多量の電力を消費するという問題がある。The electrolysis method is a method in which impurities are left in the anode by electrolysis and high-purity Al is collected in the cathode, which is disclosed in, for example, Japanese Patent Publication No. 62-10315, but consumes a very large amount of power. There is a problem of doing.
【０００６】化合物法は、不純物であるＦｅと不溶性化
合物を形成し得る元素を溶湯中に添加することにより、
Ｆｅを含有する複合化合物として除去する方法であり、
生産性に優れ、エネルギー消費量も少ない。しかしなが
ら、例えば特公昭５７−２１３４号公報に示されている
技術に従い、Ｍｎを添加元素とした場合には多量のＭｎ
を添加する必要があり、かえって添加元素によりＡｌ溶
湯が汚染されることが指摘されていた。In the compound method, an element capable of forming an insoluble compound with Fe as an impurity is added to the molten metal,
A method of removing it as a composite compound containing Fe,
Excellent productivity and low energy consumption. However, for example, according to the technique disclosed in Japanese Patent Publication No. 57-2134, when Mn is an additive element, a large amount of Mn is added.
It has been pointed out that the Al melt must be contaminated by the additive element.
【０００７】[0007]
【発明が解決しようとする課題】本発明は上記事情に着
目してなされたものであって、生産性に優れ、エネルギ
ー消費量も少ない上記化合物法において、添加元素によ
りＡｌまたはＡｌ合金溶湯を汚染することなく、不純物
であるＦｅを除去し得る方法を提供しようとするもので
ある。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances and contaminates Al or Al alloy molten metal with an additive element in the above compound method having excellent productivity and low energy consumption. The present invention aims to provide a method capable of removing Fe, which is an impurity, without doing so.
【０００８】[0008]
【課題を解決するための手段】上記課題を解決した本発
明とは、Ｆｅを含有するＡｌまたはＡｌ合金スクラップ
を溶解したＡｌ溶湯からＦｅを除去する方法であって、
該Ａｌ溶湯中にＺｒ及びＭｎをＺｒ／Ｍｎ比（質量比：
以下同様）が０．５〜１．５となる範囲で添加すること
によりＦｅを含有する複合化合物を形成し、該複合化合
物を分離して除去することを要旨とするものである。The present invention, which has solved the above-mentioned problems, is a method for removing Fe from an Al melt in which Fe-containing Al or Al alloy scrap is melted,
Zr and Mn are added to the molten Al to form a Zr / Mn ratio (mass ratio:
The same shall apply hereinafter) in the range of 0.5 to 1.5 to form a composite compound containing Fe, and the composite compound is separated and removed.
【０００９】尚、Ｚｒ及びＭｎの合計添加量は、溶湯中
のＦｅ含有量に対して質量比で０．５〜２倍であること
が好ましく、またＺｒ及びＭｎを添加したＡｌ溶湯は、
該Ａｌ溶湯の流動性が良好である温度以上で、且つ前記
複合化合物の溶融温度以下で所定時間保持することが推
奨される。The total addition amount of Zr and Mn is preferably 0.5 to 2 times in mass ratio with respect to the Fe content in the molten metal, and the Al molten metal added with Zr and Mn is
It is recommended that the molten aluminum be held at a temperature not lower than the fluidity of the molten aluminum and not higher than the melting temperature of the composite compound for a predetermined time.
【００１０】[0010]
【発明の実施の形態】Ａｌ溶湯中のＦｅは極めて化合物
を形成しにくく、添加元素によりＡｌ溶湯を汚染するこ
となくＡｌ溶湯からＦｅを化合物として除去することは
非常に困難であると考えられてきた。しかしながら、本
発明者らが鋭意検討した結果、Ａｌ溶湯中にＺｒ及びＭ
ｎを同時に添加すると、Ｆｅは以下の反応等により複合
化合物を形成し、Ａｌ溶湯を汚染することなく分離・除
去し得ることを見出した。 Ａｌ＋Ｆｅ＋Ｚｒ → ＡｌＦｅＺｒ ６Ａｌ＋Ｆｅ＋Ｍｎ＋Ｚｒ → Ａｌ6 （Ｆｅ，Ｍｎ，
Ｚｒ）BEST MODE FOR CARRYING OUT THE INVENTION Fe in an Al melt is extremely difficult to form a compound, and it has been considered that it is very difficult to remove Fe as a compound from the Al melt without contaminating the Al melt with an additive element. It was However, as a result of diligent studies by the present inventors, Zr and M were contained in the molten aluminum.
It has been found that when n is added at the same time, Fe forms a complex compound by the following reaction or the like and can be separated and removed without contaminating the molten aluminum. Al + Fe + Zr → AlFeZr 6 Al + Fe + Mn + Zr → Al 6 (Fe, Mn,
Zr)
【００１１】尚、Ｚｒ及びＭｎをＡｌ溶湯中に添加する
にあたり、Ｚｒ／Ｍｎ比が０．５未満であるか、或いは
１．５を超える場合には、Ｚｒ及びＭｎを多量に添加す
ることが必要となり却ってＡｌ溶湯を汚染することとな
るので好ましくない。従ってＺｒ／Ｍｎ比は０．５〜
１．５になる様にＺｒとＭｎを添加することが必要であ
り、０．８〜１．２の範囲であると望ましい。When adding Zr and Mn to the molten aluminum, if the Zr / Mn ratio is less than 0.5 or exceeds 1.5, a large amount of Zr and Mn may be added. It is not preferable because it becomes necessary and contaminates the molten aluminum. Therefore, the Zr / Mn ratio is 0.5-
It is necessary to add Zr and Mn so as to be 1.5, and it is desirable that the range is 0.8 to 1.2.
【００１２】また、Ｚｒ及びＭｎの合計添加量として
は、化合物を生成する為の反応の頻度を考えるとＦｅ濃
度の０．５倍以上添加することが望ましく、溶湯中のＦ
ｅの０．８倍以上添加することがより好ましい。但し、
Ｚｒ及びＭｎを溶湯中のＦｅ含有量に対して、過度に多
く添加すると、Ｚｒ及びＭｎによる汚染が発生してしま
う。従って、Ｚｒ及びＭｎの添加量の上限値は、溶湯中
のＦｅに対して化学量論比で３倍程度までとすることが
望ましく、質量比で２倍までとすることがより好まし
い。The total amount of Zr and Mn added is preferably 0.5 times or more the Fe concentration in consideration of the frequency of the reaction for forming the compound.
It is more preferable to add 0.8 times or more of e. However,
If Zr and Mn are added in an excessively large amount with respect to the Fe content in the molten metal, contamination with Zr and Mn will occur. Therefore, the upper limit of the added amount of Zr and Mn is preferably up to about 3 times in stoichiometric ratio with respect to Fe in the molten metal, and more preferably up to 2 times in mass ratio.
【００１３】本発明は、Ａｌ溶湯中にＺｒ及びＭｎを添
加する方法を限定するものではなく、Ｚｒ及びＭｎを主
体とする合金として添加してもよく、Ｚｒ及びＭｎを個
別に添加してもよい。本発明ではＡｌ溶湯中にＺｒ及び
ＭｎをＦｅ量に応じて添加すればよいが、添加後に撹拌
すれば反応効率を高めることができ好ましい。The present invention does not limit the method of adding Zr and Mn to the molten aluminum, and may be added as an alloy mainly containing Zr and Mn, or Zr and Mn may be added individually. Good. In the present invention, Zr and Mn may be added to the molten Al in accordance with the amount of Fe, but it is preferable to stir after the addition because the reaction efficiency can be increased.
【００１４】また添加後にＦｅ含有複合化合物を形成さ
せるにあたっては、Ｚｒ及びＭｎを添加したＡｌ溶湯
を、該Ａｌ溶湯の流動性が良好である温度以上で、且つ
前記複合化合物の溶融温度以下で所定時間保持すること
が推奨される。Ａｌ溶湯の保持温度が低過ぎると、液相
よりも固相の方が多くなり、複合化合物生成の反応効率
が低下する。一方保持温度が高過ぎると、Ｆｅの残存量
が増加する傾向にある。この理由は、生成したＦｅ含有
複合化合物が再溶解するためであると考えられる。尚、
Ａｌ及びＡｌ合金の溶解温度は、６８０〜９００℃が一
般的であるので、保持温度は６５０℃以上とすることが
望ましい。一方保持温度の上限値は、上記複合化合物の
組成及びその融点にもよるが、７２０℃以下が好まし
く、７００℃以下であるとより好ましい。また保持時間
は可及的に長い程よいが、通常工程では１時間程度で十
分である。In addition, in forming the Fe-containing composite compound after addition, the Al melt containing Zr and Mn is prescribed at a temperature not lower than the temperature at which the Al melt has good fluidity and not higher than the melting temperature of the composite compound. It is recommended to hold for a time. When the holding temperature of the molten aluminum is too low, the solid phase is more than the liquid phase, and the reaction efficiency of forming the complex compound is reduced. On the other hand, if the holding temperature is too high, the residual amount of Fe tends to increase. It is considered that the reason for this is that the Fe-containing composite compound formed is redissolved. still,
Since the melting temperature of Al and Al alloy is generally 680 to 900 ° C., the holding temperature is preferably 650 ° C. or higher. On the other hand, the upper limit of the holding temperature depends on the composition of the composite compound and its melting point, but is preferably 720 ° C. or lower, and more preferably 700 ° C. or lower. The holding time is preferably as long as possible, but about 1 hour is sufficient in the normal process.
【００１５】Ｆｅを含む複合化合物が生成したＡｌ溶湯
から、上記複合化合物を分離・除去するにあたっては、
公知の方法を用いればよく、一般的な除去方法として
は、溶湯を鎮静化することにより複合化合物を湯面に
浮上させて除去する方法、Ａｌ溶湯と不活性なガス
（Ａｒ，Ｈｅ，Ｎｅ，Ｎ2 等）を、微細な気泡として溶
湯内に吹込み、該気泡に複合化合物を付着させて浮上分
離を促進する方法、耐火物製フィルターを用いてろ過
する方法等が例示でき、これらの方法を単独または組み
合わせて実施すれば良い。In separating and removing the above-mentioned composite compound from the molten Al containing the composite compound containing Fe,
A known method may be used. As a general removal method, a method of removing the composite compound by floating the complex compound on the molten metal surface by calming the molten metal, an Al molten metal and an inert gas (Ar, He, Ne, N 2 and the like) are blown into the molten metal as fine bubbles, and a composite compound is attached to the bubbles to promote floating separation, a method of filtering using a refractory filter, and the like. May be performed alone or in combination.
【００１６】本発明は前記化合物法を採用するものであ
るが、従来技術の特公昭５７−２１３４号公報に記載さ
れたＭｎ添加による方法と比較して、添加元素量が少量
でも効率良くＦｅ成分が除去できると共に、添加元素の
残留が非常に少ないという利点を有する。さらにＦｅを
含有する複合化合物中におけるＡｌ含有量も少量である
ため、溶湯中のＡｌのロスを可及的に抑制して不純物元
素のＦｅを分離・除去することが可能である。The present invention adopts the above compound method, but compared with the method by the addition of Mn described in Japanese Patent Publication No. 57-2134 of the prior art, the Fe component can be efficiently added even if the amount of added element is small. Has the advantage that it can be removed, and the residual amount of additional elements is very small. Further, since the Al content in the Fe-containing composite compound is also small, it is possible to separate and remove the impurity element Fe by suppressing the loss of Al in the molten metal as much as possible.
【００１７】以下、本発明を実施例によって更に詳細に
説明するが、下記実施例は本発明を限定する性質のもの
ではなく、前・後記の主旨に徴して設計変更することは
いずれも本発明の技術的範囲に含まれるものである。Hereinafter, the present invention will be described in more detail with reference to Examples. However, the following Examples are not intended to limit the present invention, and any design changes based on the gist of the preceding and following aspects will be described. It is included in the technical range of.
【００１８】[0018]
【実施例】実施例１ 原料として、Ｆｅを０．５〜２．０質量％含有するＪＩ
Ｓ１１００系Ａｌスクラップを使用し、これを１０トン
の反射型溶解炉（重油焚き）を用いて大気雰囲気下７２
０℃で溶解した。得られた溶湯にＺｒ／Ｍｎ比が１であ
るＺｒ−Ｍｎ合金を添加し、６８０℃で１時間保持し
た。等温保持後の溶湯をサンプリングして元素分析を行
った。いずれの溶湯にも、ＡｌＦｅＺｒ，Ａｌ6 （Ｍ
ｎ，Ｆｅ，Ｚｒ）等の化合物が生成していた。また、Ｆ
ｅ濃度とＺｒ−Ｍｎ合金の添加量の結果を図１に示す。 Example 1 JI containing 0.5 to 2.0 mass% of Fe as a raw material
S1100 system Al scrap is used, and this is used in a 10-ton reflective melting furnace (heavy oil-fired) in an air atmosphere.
Dissolved at 0 ° C. A Zr-Mn alloy having a Zr / Mn ratio of 1 was added to the obtained molten metal, and the mixture was kept at 680 ° C for 1 hour. The molten metal after isothermal holding was sampled for elemental analysis. AlFeZr, Al 6 (M
Compounds such as (n, Fe, Zr) were produced. Also, F
The results of the e concentration and the amount of Zr-Mn alloy added are shown in FIG.
【００１９】図１の結果から、Ｚｒ及びＭｎを添加する
ことにより、Ｆｅ濃度を効率良く低減できることが分か
る。尚、Ａｌ溶湯中におけるＦｅ濃度の初期値にもよる
が、例えばＦｅ濃度の初期値が２％の場合、Ｚｒ及びＭ
ｎの添加量はＦｅ濃度初期値の１／２に相当する１％以
上が好ましいことが分かる。From the results shown in FIG. 1, it can be seen that the Fe concentration can be efficiently reduced by adding Zr and Mn. Note that, depending on the initial value of the Fe concentration in the molten aluminum, for example, when the initial value of the Fe concentration is 2%, Zr and M
It is understood that the addition amount of n is preferably 1% or more, which corresponds to 1/2 of the initial Fe concentration value.
【００２０】実施例２ 下記の条件以外は実施例１と同様にしてＡｌ溶湯のサン
プリングを行い、Ｚｒ−Ｍｎ合金の添加量とＡｌ溶湯中
のＦｅ濃度との関係を調べた。結果は図２に示す。 原料 ：ＪＩＳ３００４系Ａｌスクラップ 溶解温度：７４０℃ 保持温度：６６５℃ 保持時間：４０分間 溶解炉 ：ＬＮＧだき５ｔ反射型溶解炉 添加元素：Ｚｒ及びＭｎ（母合金中のＺｒ／Ｍｎ比が
１．５） 図２の結果から、Ｚｒ及びＭｎを添加することにより、
Ｆｅ濃度を効率良く低減できることが分かる。 Example 2 The molten Al was sampled in the same manner as in Example 1 except for the following conditions, and the relationship between the added amount of the Zr-Mn alloy and the Fe concentration in the molten Al was investigated. The results are shown in Figure 2. Raw material: JIS3004 type Al scrap Melting temperature: 740 ° C Holding temperature: 665 ° C Holding time: 40 minutes Melting furnace: LNG fired 5t reflective melting furnace Additional elements: Zr and Mn (Zr / Mn ratio in the mother alloy is 1.5 ) From the results of FIG. 2, by adding Zr and Mn,
It can be seen that the Fe concentration can be efficiently reduced.
【００２１】実施例３ 下記の条件以外は実施例１と同様にしてＡｌ溶湯のサン
プリングを行い、Ｚｒ−Ｍｎ合金の添加量とＡｌ溶湯中
のＦｅ濃度との関係を調べた。結果は図３に示す。 原料 ：ＪＩＳ５０００系Ａｌスクラップ 溶解温度：７５０℃ 保持温度：６５５℃ 保持時間：３０分間 溶解炉 ：重油だき５ｔ反射型溶解炉 添加元素：Ｚｒ及びＭｎ（母合金中のＺｒ／Ｍｎ比が
０．５） 図３の結果から、Ｚｒ及びＭｎを添加することにより、
Ｆｅ濃度を効率良く低減できることが分かる。 Example 3 The molten aluminum was sampled in the same manner as in Example 1 except for the following conditions, and the relationship between the added amount of Zr—Mn alloy and the Fe concentration in the molten aluminum was investigated. The results are shown in FIG. Raw material: JIS 5000 series Al scrap Melting temperature: 750 ° C Holding temperature: 655 ° C Holding time: 30 minutes Melting furnace: Heavy oil fired 5t reflective melting furnace Additional elements: Zr and Mn (Zr / Mn ratio in the master alloy is 0.5 ) From the results of FIG. 3, by adding Zr and Mn,
It can be seen that the Fe concentration can be efficiently reduced.
【００２２】[0022]
【発明の効果】本発明は以上の様に構成されているの
で、生産性に優れ、エネルギー消費量も少ない化合物法
において、少量の添加でＦｅを含有する複合化合物を形
成でき、添加元素によりＡｌ溶湯を汚染することなくＦ
ｅを除去する方法が提供できることとなった。EFFECTS OF THE INVENTION Since the present invention is constituted as described above, it is possible to form a composite compound containing Fe with a small amount of addition in the compound method with excellent productivity and low energy consumption. F without contaminating the molten metal
It has become possible to provide a method for removing e.
【図１】Ｚｒ及びＭｎ合金（Ｚｒ／Ｍｎ比：１．０）の
添加量とＡｌ溶湯中のＦｅ濃度との関係を示すグラフで
ある。FIG. 1 is a graph showing the relationship between the amounts of Zr and Mn alloys (Zr / Mn ratio: 1.0) added and the Fe concentration in molten Al.
【図２】Ｚｒ及びＭｎ合金（Ｚｒ／Ｍｎ比：１．５）の
添加量とＡｌ溶湯中のＦｅ濃度との関係を示すグラフで
ある。FIG. 2 is a graph showing the relationship between the added amounts of Zr and Mn alloys (Zr / Mn ratio: 1.5) and the Fe concentration in the molten Al.
【図３】Ｚｒ及びＭｎ合金（Ｚｒ／Ｍｎ比：０．５）の
添加量とＡｌ溶湯中のＦｅ濃度との関係を示すグラフで
ある。FIG. 3 is a graph showing the relationship between the added amounts of Zr and Mn alloys (Zr / Mn ratio: 0.5) and the Fe concentration in the molten aluminum.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 増田 隆平 兵庫県神戸市西区高塚台１丁目５番５号 株式会社神戸製鋼所神戸総合技術研究所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ryuhei Masuda 1-5-5 Takatsukadai, Nishi-ku, Kobe City, Hyogo Prefecture Kobe Steel Works, Ltd. Kobe Research Institute
Claims (3)
ラップを溶解したＡｌ溶湯からＦｅを除去する方法であ
って、該Ａｌ溶湯中にＺｒ及びＭｎをＺｒ／Ｍｎ比が
０．５〜１．５となる範囲で添加することによりＦｅを
含有する複合化合物を形成し、該複合化合物を分離して
除去することを特徴とするＡｌ溶湯からＦｅを除去する
方法。1. A method for removing Fe from an Al melt in which Al or Al alloy scrap containing Fe is melted, wherein Zr and Mn are contained in the Al melt at a Zr / Mn ratio of 0.5 to 1.5. A method for removing Fe from an Al melt characterized by forming a composite compound containing Fe by adding in a range such that the composite compound is separated and removed.
Ｆｅ含有量に対して質量比で０．５〜２倍である請求項
１に記載の方法。2. The method according to claim 1, wherein the total addition amount of Zr and Mn is 0.5 to 2 times in mass ratio with respect to the Fe content in the molten metal.
Ａｌ溶湯の流動性が良好である温度以上で、且つ前記複
合化合物の溶融温度以下で保持する請求項１または２に
記載の方法。3. The method according to claim 1, wherein the molten Al containing Zr and Mn is maintained at a temperature not lower than a temperature at which the molten Al has good fluidity and not higher than the melting temperature of the composite compound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4373196A JPH09235631A (en) | 1996-02-29 | 1996-02-29 | Method for removing iron from iron-containing molten aluminum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4373196A JPH09235631A (en) | 1996-02-29 | 1996-02-29 | Method for removing iron from iron-containing molten aluminum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09235631A true JPH09235631A (en) | 1997-09-09 |
Family
ID=12671933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4373196A Withdrawn JPH09235631A (en) | 1996-02-29 | 1996-02-29 | Method for removing iron from iron-containing molten aluminum |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09235631A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100966806B1 (en) * | 2007-12-24 | 2010-06-29 | 재단법인 포항산업과학연구원 | Apparatus for elimination of iron in Aluminum melt and method there of |
| CN113286912A (en) * | 2019-01-16 | 2021-08-20 | 丰田自动车株式会社 | Method for regenerating aluminum alloy |
-
1996
- 1996-02-29 JP JP4373196A patent/JPH09235631A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100966806B1 (en) * | 2007-12-24 | 2010-06-29 | 재단법인 포항산업과학연구원 | Apparatus for elimination of iron in Aluminum melt and method there of |
| CN113286912A (en) * | 2019-01-16 | 2021-08-20 | 丰田自动车株式会社 | Method for regenerating aluminum alloy |
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