JPS6024334A - Method for removing iron from aluminum or aluminum alloy - Google Patents
Method for removing iron from aluminum or aluminum alloyInfo
- Publication number
- JPS6024334A JPS6024334A JP13019483A JP13019483A JPS6024334A JP S6024334 A JPS6024334 A JP S6024334A JP 13019483 A JP13019483 A JP 13019483A JP 13019483 A JP13019483 A JP 13019483A JP S6024334 A JPS6024334 A JP S6024334A
- Authority
- JP
- Japan
- Prior art keywords
- aluminum
- molten
- alloy
- iron
- manganese
- 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
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 23
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims description 56
- 229910052742 iron Inorganic materials 0.000 title claims description 27
- 229910052782 aluminium Inorganic materials 0.000 title claims description 16
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims description 12
- 238000000034 method Methods 0.000 title claims description 10
- 229910052751 metal Inorganic materials 0.000 claims abstract description 31
- 239000002184 metal Substances 0.000 claims abstract description 31
- 239000002245 particle Substances 0.000 claims abstract description 18
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 17
- 239000012535 impurity Substances 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims abstract description 4
- 230000000694 effects Effects 0.000 claims abstract description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 16
- -1 aluminum-manganese Chemical compound 0.000 claims description 16
- 239000011572 manganese Substances 0.000 claims description 15
- 229910000914 Mn alloy Inorganic materials 0.000 claims description 6
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 230000004907 flux Effects 0.000 abstract description 15
- 229910045601 alloy Inorganic materials 0.000 abstract description 5
- 239000000956 alloy Substances 0.000 abstract description 5
- 239000010953 base metal Substances 0.000 abstract 3
- 229910018131 Al-Mn Inorganic materials 0.000 abstract 2
- 229910018461 Al—Mn Inorganic materials 0.000 abstract 2
- 150000001875 compounds Chemical class 0.000 abstract 2
- 229910000765 intermetallic Inorganic materials 0.000 description 10
- 238000002844 melting Methods 0.000 description 7
- 230000008018 melting Effects 0.000 description 7
- 238000011084 recovery Methods 0.000 description 4
- 238000004062 sedimentation Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 230000005587 bubbling Effects 0.000 description 3
- 238000004512 die casting Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はアルミニウム又はアルミニウム合金から鉄分を
除く方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for removing iron from aluminum or aluminum alloys.
アルミニウム又はアルミニウム合金中に不純物として鉄
分が一定の限度を越えて含有されてし）ると、上記鉄分
を含む粗大結晶の金属間化合物が形成されてしまう。If iron is contained as an impurity in aluminum or an aluminum alloy in excess of a certain limit, a coarse crystalline intermetallic compound containing the iron will be formed.
而して、このような過剰の鉄分は合金の脆性を増大させ
るので、製品の耐久性が損なわれ品質が低下すると云う
問題点があった。However, since such excessive iron content increases the brittleness of the alloy, there is a problem in that the durability of the product is impaired and the quality is degraded.
この問題点を解決するために提案されている公知の除鉄
方法例は、不純物としての鉄分を含むアルミニウム合金
の溶湯中に、上記アルミニウム合金中に含まれている鉄
分の量と略同量或いは若干多めにマンガンを含んだアル
ミニウムーマンガン合金の粒子を添加し、上記アルミニ
ウム合金溶湯より比重の大きいアルミニウムーマンガン
−鉄の金属間化合物を生成させ、所定の時間所定の温度
に溶湯を保持し、上記アルミニウムーマンガン−鉄の金
属間化合物を溶解炉の炉底に沈降分離させ、鉄分の少な
くなった上部の溶湯をくみ上げて使用すると云うもので
ある。An example of a known iron removal method that has been proposed to solve this problem is to remove iron in a molten aluminum alloy containing iron as an impurity in an amount approximately equal to or equal to the amount of iron contained in the aluminum alloy. Adding aluminum-manganese alloy particles containing slightly more manganese to generate an aluminum-manganese-iron intermetallic compound having a higher specific gravity than the molten aluminum alloy, and maintaining the molten metal at a predetermined temperature for a predetermined time, The above-mentioned aluminum-manganese-iron intermetallic compound is allowed to settle and separate at the bottom of the melting furnace, and the upper molten metal containing less iron is pumped up and used.
然しなから、アルミニウムーマンガン合金の粒子を充分
に溶湯と接触させ、アルミニウムーマンガン−鉄金属間
化合物を形成するためには相当の時間を必要とし、また
、アルミニウムーマンガン合金の粒子を添加するに際し
°Ｃ溶湯表面の酸化物等の不純物が粒子に何着して上記
溶湯内に混入し、アルミニウムーマンガン−鉄金属間化
合物の沈降分離が良好に行われないこともあって、効率
の良い除鉄が行われないと云う問題点があった。However, it takes a considerable amount of time to bring the particles of the aluminum-manganese alloy into sufficient contact with the molten metal to form an aluminum-manganese-iron intermetallic compound, and it also takes a considerable amount of time to bring the particles of the aluminum-manganese alloy into contact with the molten metal. At this time, impurities such as oxides on the surface of the °C molten metal may adhere to particles and mix into the molten metal, preventing the sedimentation and separation of aluminum-manganese-iron intermetallic compounds from being performed well. There was a problem that iron removal was not carried out.
本発明は叙上の観点に立ってなされたものであって、そ
の目的とするところは、アルミニウム又はアルミニウム
合金中から短時間に効率良（、且つ安価に鉄分を除去し
得る方法を提供しようとするものである。The present invention has been made based on the above-mentioned viewpoints, and its purpose is to provide a method that can efficiently (and inexpensively) remove iron from aluminum or aluminum alloys in a short time. It is something to do.
而して、本発明の上記目的は、高純度のマンガン粒子或
いはアルミニウムーマンガン合金粒子とアルミニウム或
いはアルミニウム・合金溶湯用フラックス（粉末）の混
合物に圧力をかけてタブレット状の成形体とし、この成
形体を不純物として鉄を含むアルミニウム合金溶湯中に
浸漬することによって達成される。The above object of the present invention is to press a mixture of high-purity manganese particles or aluminum-manganese alloy particles and flux (powder) for molten aluminum or aluminum alloy to form a tablet-shaped compact, and to form this compact into a tablet-like compact. This is accomplished by immersing the body in a molten aluminum alloy containing iron as an impurity.
以下、実施例に基づき具体的に説明する。Hereinafter, a detailed description will be given based on examples.
〔実施例１〕
純度９９．７％で約１〜３ｍｌの粒度を有するマンガン
金属粒子７０部と、重量比百分率でＮａＣ１４０％、Ｋ
Ｃｌ４０％及びＫ Ｆ ２０％から成るアルミニウム合
金溶湯用フラックス３０部を混合した混合体を円筒状の
金型に入れ、これに約１５００ｋｇ／ｃｎの圧力をかけ
てタブレット状の成形体を製造する。この場合、マンガ
ンの純度は高い方がよいが、経済的〜ゝ入手を考えると
、棚ね９９％以上であってよい。[Example 1] 70 parts of manganese metal particles having a purity of 99.7% and a particle size of about 1 to 3 ml, and 140% by weight of NaC, K
A mixture of 30 parts of a flux for molten aluminum alloy consisting of 40% Cl and 20% KF is placed in a cylindrical mold, and a pressure of about 1500 kg/cm is applied to the mold to produce a tablet-shaped molded body. In this case, the purity of manganese should be higher, but from the viewpoint of economical availability, the purity of manganese may be 99% or more.
また、マンガン粒子の大きさは、大きすぎると粉末フラ
ックスと共に加圧成形する場合に金型を傷め、一方小さ
すぎるとアルミニウム溶湯に溶解する傾向が大きくなる
ので、略０．１〜５ｆｌの範囲で望ましくは約１〜３顛
であってよい。In addition, the size of the manganese particles should be in the range of about 0.1 to 5 fl, since if it is too large, it will damage the mold when pressure-molded with powder flux, and if it is too small, it will have a greater tendency to dissolve in the molten aluminum. Desirably, it may be about 1 to 3 times.
また、マンガン粒子と粉末フラックスとの配合割合につ
いては、フラックスは概ね２０〜６０重量％である。フ
ラックスが多すぎては上記加圧成形体がアルミニウム溶
湯の表面に浮上してしまい、また少なすぎては成形性が
悪くなりまた溶湯の攪拌や浄化作用が小さくなってしま
う。Moreover, regarding the blending ratio of manganese particles and powder flux, the flux is approximately 20 to 60% by weight. If the amount of flux is too large, the press-molded body will float to the surface of the molten aluminum, while if it is too small, the moldability will deteriorate and the stirring and purifying effects of the molten metal will be reduced.
次に、１．５％の鉄を含む１２Ｓｉ−アルミニウムのダ
イカスト用アルミニウム二次合金１００ｋｇを溶解炉で
約７８０℃に加熱溶解し、上記の如くして得られた加圧
成形体２．２ ｋｇ （マンガン量は溶湯の１．５％）
を溶湯の底に沈める。Next, 100 kg of a secondary die-casting aluminum alloy of 12Si-aluminum containing 1.5% iron was heated and melted at about 780°C in a melting furnace, and 2.2 kg of the press-formed body obtained as described above was obtained. (The amount of manganese is 1.5% of the molten metal)
sink to the bottom of the molten metal.
然るときは、フラックスの作用で強くバブリング及び攪
拌または対流が生じ、成形体中のマンガンと溶湯中の鉄
とは効率よく接触し、アルミニウムーマンガン−鉄の金
属間化合物を性成する。In such a case, strong bubbling, stirring or convection occurs due to the action of the flux, and the manganese in the compact and the iron in the molten metal come into contact with each other efficiently, forming an intermetallic compound of aluminum-manganese-iron.
上記マンガン−フラックスが完全にバブリングを停止し
たならば、溶湯温度を約６１０”ｃに下げその温度で約
３０分保って、アルミニウムーマンガン−鉄 金属間化
合物を沈降分離し、然る後、鉄分の少なくなった上記溶
湯のうちの上部の溶湯のみを回収した。When the manganese flux has completely stopped bubbling, the temperature of the molten metal is lowered to about 610"C and maintained at that temperature for about 30 minutes to sediment and separate the aluminum-manganese-iron intermetallic compound, and then the iron Only the upper part of the molten metal, which had decreased in amount, was recovered.
なお、−上記溶解炉の底の沈着物はざくざくした状態の
固形物となるので回収すべき溶湯とは完全に区別するこ
とができる。The deposits at the bottom of the melting furnace are in the form of a coarse solid substance and can be completely distinguished from the molten metal to be recovered.
而して、上記方法によって回収された１２Ｓｉ−＾１の
残留鉄量は平均で０．４０％であり、また溶湯の回収率
は平均で約８０％であった。The amount of residual iron in the 12Si-^1 recovered by the above method was 0.40% on average, and the recovery rate of the molten metal was on average about 80%.
〔実施例２〕
３０％マンガン−アルミニウム合金粒子とフラックス（
実施例１で使用したのと同様なもの）との混合物を上記
と同様に金型に入れ、これに約１５００ｋｌ（／ ａａ
の圧力をかけてタブレット状の成形体を製造する。[Example 2] 30% manganese-aluminum alloy particles and flux (
The same mixture as that used in Example 1) was placed in a mold in the same manner as above, and about 1500 kl (/aa
A tablet-shaped molded body is manufactured by applying pressure.
次に、１．５％の鉄を含む１２Ｓｉ−アルミニウムのダ
イカスト用アルミニウム二次合金１００ ｋｇを溶解炉
で約７８０℃に溶解し、上記の如くして得られた加圧成
形体？、４ ｋｇ （マンガン量は溶湯の１．５％）を
上記溶湯の底に沈める。Next, 100 kg of 12Si-aluminum secondary aluminum alloy for die casting containing 1.5% iron was melted at about 780°C in a melting furnace, and the press-formed body obtained as described above was melted in a melting furnace. , 4 kg (the amount of manganese is 1.5% of the molten metal) is sunk to the bottom of the molten metal.
上記フラックスが完全にバブリングを停止したならば、
溶湯温度を約６１０℃に下げその温度で約３０分保って
、アルミニウムーマンガン−鉄 金属間化合物を沈降分
離し、然る後、鉄分の少なくなった上記溶湯のうち上部
の溶湯のみを回収した。Once the above flux has completely stopped bubbling,
The temperature of the molten metal was lowered to about 610°C and held at that temperature for about 30 minutes to sediment and separate the aluminum-manganese-iron intermetallic compound, and then only the upper part of the molten metal with a reduced iron content was recovered. .
炉底の沈着物はざくざ（した状態の固形物であるので回
収すべき溶湯とは完全に区別することができる。Since the deposits at the bottom of the furnace are solid matter in a rough state, they can be completely distinguished from the molten metal that should be recovered.
而して、上記方法によって回収された１２Ｓｉ−アルミ
ニウムの残留鉄量は平均で０．４１％であり、また溶湯
の回収率は平均で約７９％であった。The amount of residual iron in the 12Si-aluminum recovered by the above method was 0.41% on average, and the recovery rate of the molten metal was on average about 79%.
これに対して、１．５％鉄を含む１２Ｓｉ−アルミニウ
ムダイカスト用アルミニウム二次合金１００ｋｇを溶解
炉にて溶湯し、この溶湯中に上記アルミニウム合金中に
含まれている鉄分の量より若干多めにマンガンを含んだ
アルミニウムーマンガン合金の粒子を添加し、上記アル
ミニウム合金溶湯より比重の大きいアルミニウムーマン
ガン−鉄の金属間化合物を生成させ、６１０’ｃに溶湯
を保持し、上記アルミニウムーマンガン−鉄の金属間化
合物ヲ溶解炉の炉底に沈降分離させた後に鉄分の少なく
なった上部の溶湯を回収すると云う従来公知の方法によ
って除鉄を行った場合には、添加するマンガンの量も溶
湯重量の１．７％必要であり、また、沈降分離させるの
に約４時間の時間を費したが、回収された合金中の残留
鉄量は平均で０．５１％止まり、また溶湯の回収率も平
均で約６０％であった。On the other hand, 100 kg of 12Si-aluminum secondary alloy for aluminum die casting containing 1.5% iron was melted in a melting furnace, and the amount of iron contained in the molten metal was slightly higher than that contained in the aluminum alloy. Particles of aluminum-manganese alloy containing manganese are added to form an aluminum-manganese-iron intermetallic compound having a higher specific gravity than the molten aluminum alloy, and the molten metal is held at 610'c. When iron is removed by the conventionally known method of allowing the intermetallic compounds to settle and separate at the bottom of the melting furnace and then recovering the upper molten metal with a reduced iron content, the amount of manganese added also depends on the weight of the molten metal. Although it took about 4 hours to perform sedimentation and separation, the amount of residual iron in the recovered alloy was only 0.51% on average, and the recovery rate of the molten metal was also low. The average was about 60%.
本発明は叙上の如く構成されるので、本発明によるとき
には、従来の公知の方法に比し、マンガン使用−が少な
くてすみ、回収されたアルミニウム合金中の残留鉄量を
より低くすることができ、溶湯の回収率を約２０％向上
させると共に、沈降分離させる時間も大幅に短縮するこ
とができ、更に溶湯中に酸化物等が引き込まれることが
な（、フラックスにより溶湯が自然に浄化されるので、
極めて効率的に且つ安価にアルミニウム合金中から不純
物としての鉄分を除去することを得る。Since the present invention is configured as described above, the present invention requires less manganese than conventionally known methods, and it is possible to lower the amount of residual iron in the recovered aluminum alloy. This improves the recovery rate of the molten metal by about 20%, and significantly shortens the time for sedimentation and separation, and also prevents oxides from being drawn into the molten metal (the flux naturally purifies the molten metal). Because
It is possible to remove iron as an impurity from an aluminum alloy very efficiently and at low cost.
なお、本発明は叙上の実施例に限定されるものではなく
、マンガン粒子或いはアルミニウムーマンガンの粒度の
大きさ、アルミニウム合金用フラックスの配合比及び沈
降分離させる時間等は、その処理の仕方等によって適宜
に選択決定されるものであり、本発明はそれらの総てを
包摂するものである。Note that the present invention is not limited to the above embodiments, and the size of the manganese particles or aluminum-manganese particles, the blending ratio of the flux for aluminum alloys, the time for sedimentation separation, etc., the method of treatment, etc. The present invention includes all of them.
特許出願人 泉自動車工業株式会社 代理人（７５２４）最上正太部Patent applicant: Izumi Jidosha Kogyo Co., Ltd. Agent (7524) Shotabe Mogami
Claims (1)
金粒子とアルミニウム或いはアルシミニウム用金溶湯り
フランクスとの混合物に圧力をかけて成形体とし、上記
成形体を不純物として鉄分を含むアルミニウム又はアル
ミニウム合金溶湯中に浸漬し、上記成形体中のフラ・ノ
クスの作用により上記溶湯の攪拌効果を生じさせたこと
を特徴とするアルミニウム又はアルミニウム合金から鉄
分を除く方法。A mixture of high-purity manganese particles or aluminum-manganese alloy particles and molten gold franks for aluminum or aluminum is pressed to form a compact, and the compact is immersed in a molten aluminum or aluminum alloy containing iron as an impurity. . A method for removing iron from aluminum or an aluminum alloy, characterized in that the effect of stirring the molten metal is produced by the action of Fura Nox in the compact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13019483A JPS6024334A (en) | 1983-07-19 | 1983-07-19 | Method for removing iron from aluminum or aluminum alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13019483A JPS6024334A (en) | 1983-07-19 | 1983-07-19 | Method for removing iron from aluminum or aluminum alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6024334A true JPS6024334A (en) | 1985-02-07 |
Family
ID=15028332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13019483A Pending JPS6024334A (en) | 1983-07-19 | 1983-07-19 | Method for removing iron from aluminum or aluminum alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6024334A (en) |
Cited By (1)
| 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 |
-
1983
- 1983-07-19 JP JP13019483A patent/JPS6024334A/en active Pending
Cited By (1)
| 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 |
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