JPH1112666A - Method for removing impurity element in molten copper or copper alloy and refining agent - Google Patents
Method for removing impurity element in molten copper or copper alloy and refining agentInfo
- Publication number
- JPH1112666A JPH1112666A JP16905697A JP16905697A JPH1112666A JP H1112666 A JPH1112666 A JP H1112666A JP 16905697 A JP16905697 A JP 16905697A JP 16905697 A JP16905697 A JP 16905697A JP H1112666 A JPH1112666 A JP H1112666A
- Authority
- JP
- Japan
- Prior art keywords
- oxide
- copper
- borax
- molten metal
- mol
- 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
- 239000012535 impurity Substances 0.000 title claims abstract description 28
- 229910000881 Cu alloy Inorganic materials 0.000 title claims abstract description 20
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 16
- 239000010949 copper Substances 0.000 title claims abstract description 16
- 238000007670 refining Methods 0.000 title claims abstract description 16
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims description 18
- 229910021538 borax Inorganic materials 0.000 claims abstract description 18
- 239000004328 sodium tetraborate Substances 0.000 claims abstract description 18
- 235000010339 sodium tetraborate Nutrition 0.000 claims abstract description 18
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910001948 sodium oxide Inorganic materials 0.000 claims abstract description 14
- FUJCRWPEOMXPAD-UHFFFAOYSA-N lithium oxide Chemical compound [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910001947 lithium oxide Inorganic materials 0.000 claims abstract description 10
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000004327 boric acid Substances 0.000 claims abstract description 9
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910001950 potassium oxide Inorganic materials 0.000 claims abstract description 5
- 238000002844 melting Methods 0.000 claims description 12
- 230000008018 melting Effects 0.000 claims description 12
- 239000011651 chromium Substances 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 abstract description 24
- 239000002184 metal Substances 0.000 abstract description 24
- 239000011248 coating agent Substances 0.000 abstract description 19
- 229910052804 chromium Inorganic materials 0.000 abstract description 15
- 229910052726 zirconium Inorganic materials 0.000 abstract description 15
- 230000003647 oxidation Effects 0.000 abstract description 5
- 238000007254 oxidation reaction Methods 0.000 abstract description 5
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 3
- 229910052718 tin Inorganic materials 0.000 abstract description 3
- 239000011812 mixed powder Substances 0.000 abstract description 2
- 229910052759 nickel Inorganic materials 0.000 abstract description 2
- 229910052725 zinc Inorganic materials 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 description 11
- 239000000463 material Substances 0.000 description 10
- 239000002994 raw material Substances 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910000906 Bronze Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
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、銅又は銅合金の鋳
塊を製造するに係り、使用した原料に含まれたＣｒ，Ｚ
ｒ等の不純物元素を溶湯から除去し、成分の安定した清
浄な鋳塊を製造することができる不純物元素の除去方法
及び精錬剤に関するものであり、銅又は銅合金の溶解、
鋳造の分野に広く利用される。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the production of ingots of copper or copper alloy and relates to Cr, Z contained in used raw materials.
The present invention relates to a method for removing an impurity element and a refining agent capable of producing a clean ingot having stable components by removing an impurity element such as r from a molten metal, and dissolving copper or a copper alloy.
Widely used in the field of casting.
【０００２】[0002]
【従来の技術】銅又は銅合金（以下「銅合金」と総称す
る）の鋳塊を製造する際、通常は原料として電気銅や添
加元素を金属或は母合金の状態で用いるほか、安価であ
るためスクラップも用いられている。これらの原料は、
予め使用量を配合して溶解炉で溶解して成分を分析した
後、所定の成分になるように成分を調整して鋳造され
る。この時使用する銅合金のスクラップは、鋳塊を加工
用素材になるまで加工する際に発生する工程内返材のほ
かに、需要家にてプレス等で更に加工した後に溶解原料
として戻されたものがある。2. Description of the Related Art In the production of ingots of copper or copper alloy (hereinafter collectively referred to as "copper alloy"), in general, copper or an additive element is used as a raw material in the form of a metal or a mother alloy. Because of this, scrap is also used. These ingredients are
After mixing the used amount in advance and dissolving in a melting furnace to analyze the components, the components are adjusted so as to be a predetermined component and then cast. The copper alloy scrap used at this time was returned as a molten raw material after being further processed by a press or the like at a customer, in addition to in-process return material generated when processing the ingot until it became a processing material. There is something.
【０００３】近年、電子工業界における加工用銅合金素
材に対する要求は、材料の強度及び電気伝導度等の特性
を向上させることであり、そのため銅にＣｒ，Ｚｒを始
めとして、種々の元素を添加した銅合金が開発されてい
るが、使用用途に合った材料を都度選択するため、少量
多品種の材料が同一個所で加工される場合が多くなって
きている。銅合金のスクラップは、加工後に品種毎に分
けられ、直接溶解原料として使用される場合が多いた
め、そうした異品種の材料が混入する場合が多くなり、
万一原料内に混入すると溶解時の成分が安定せず、成分
調整をすることなく再度製錬を余儀なくされる場合が生
じる。従来、高周波溶解炉などにおける溶解中に不純物
を除去する方法としては炭酸ナトリウムを添加すること
によるＳ除去が提案されているが、各種不純物を効果的
に除去する方法がなかったので、不純物を多く含んだ材
料は、転炉に装入され、通常の電気銅製造のプロセスに
従って再製錬されるため、製造コストが大幅に上昇する
だけでなく、溶解炉として溝型低周波炉のように出湯時
に残湯が必要な場合は、多量の成分不良が発生する恐れ
がある。従って、こうした不純物の混入を出来るだけ防
止するための現場管理が必要となるので、一旦原料中に
混入し、溶解時に成分分析を行って不純物が発見された
場合、これを容易に直接除去できる方法が望まれてい
る。更に、種々の元素が混じり合った材料から特定の元
素を安易に取り除くことが可能であるならば、原料のリ
サイクルの観点からも重要な技術となり得ると考えられ
る。In recent years, there has been a demand for a copper alloy material for processing in the electronics industry to improve the properties such as strength and electric conductivity of the material. Therefore, various elements such as Cr and Zr are added to copper. Copper alloys have been developed. However, in order to select a material suitable for the intended use each time, a small amount of many kinds of materials are often processed in the same place. Copper alloy scraps are divided by type after processing and are often used directly as raw materials, so that materials of different types are often mixed,
If mixed into the raw materials, the components at the time of dissolution will not be stable, and the smelting will have to be performed again without adjusting the components. Conventionally, as a method for removing impurities during melting in a high-frequency melting furnace or the like, S removal by adding sodium carbonate has been proposed. However, since there is no method for effectively removing various impurities, impurities are often removed. The contained material is charged into the converter and re-smelted according to the normal electrolytic copper manufacturing process, which not only significantly increases the production cost, but also allows the melting furnace to be used at the time of tapping, like a grooved low-frequency furnace. If residual hot water is required, a large amount of component failure may occur. Therefore, it is necessary to perform on-site management to prevent the contamination of such impurities as much as possible. Therefore, if impurities are found in the raw materials once they have been analyzed by component analysis at the time of dissolution, they can be easily and directly removed. Is desired. Further, if it is possible to easily remove a specific element from a material in which various elements are mixed, it is considered that the technique can be an important technique from the viewpoint of recycling of raw materials.
【０００４】[0004]
【発明が解決しようとする課題】本発明は係る点に鑑み
て為されたものであり、上述した問題が発生した場合、
溶解炉内炉もしくは保持炉、取鍋などの保持容器中の溶
湯中に含まれるＣｒ，Ｚｒ等の不純物元素を除去する方
法及び精錬剤を提供するものである。SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and when the above-described problem occurs,
An object of the present invention is to provide a method and a refining agent for removing impurity elements such as Cr and Zr contained in a molten metal in a holding vessel such as a furnace in a melting furnace or a holding furnace or a ladle.
【０００５】[0005]
【課題を解決するための手段】本発明の要旨とするとこ
ろは次の如くである。 （１）溶解炉で溶解されたもしくは保持容器に保持され
た銅もしくは銅合金溶湯表面を、ほう砂及びほう酸の少
なくとも１種と、残部でかつ５モル％以上４０モル％未
満の、酸化リチウム、酸化カリウム及び前記ほう砂に含
まれる酸化ナトリウムからなる群から選択された少なく
とも１種とから実質的になる被覆剤で被覆し、溶湯中に
溶解したＣｒ，Ｚｒ等の不純物元素を除去することを特
徴とする銅又は銅合金溶湯中の不純物元素の除去方法。 （２）ほう砂及びほう酸の少なくとも１種と、残部でか
つ５モル％以上４０モル％未満の、酸化リチウム、酸化
カリウム及び前記ほう砂に含まれる酸化ナトリウムから
なる群から選択された少なくとも１種とから実質的にな
ることを特徴とするＣｒ，Ｚｒ等を不純物として含有す
る銅又は銅合金の精錬剤。 （３）前記（１），（２）のほう砂に含まれる酸化ナト
リウムに代えてあるいはこの酸化ナトリウムとともに単
独の酸化ナトリウムも使用することができる。The gist of the present invention is as follows. (1) The surface of the copper or copper alloy melt melted in the melting furnace or held in the holding vessel is mixed with at least one of borax and boric acid and the balance and lithium oxide of 5 mol% or more and less than 40 mol%, Coating with a coating agent consisting essentially of at least one selected from the group consisting of potassium oxide and sodium oxide contained in the borax to remove impurity elements such as Cr and Zr dissolved in the molten metal. A method for removing impurity elements in a molten copper or copper alloy. (2) At least one of borax and boric acid, and at least one selected from the group consisting of lithium oxide, potassium oxide, and sodium oxide contained in the borax, with the balance being 5 mol% or more and less than 40 mol%. And a copper or copper alloy refining agent containing Cr, Zr, etc. as impurities. (3) A single sodium oxide can be used instead of or together with the sodium oxide contained in the borax of (1) and (2).
【０００６】ほう砂及び／又はほう酸に酸化リチウム等
の酸化物を添加した精錬剤により溶湯表面を被覆する
と、これらの混合粉末は溶湯表面で溶融し、この面を被
覆して大気からの酸化を防ぐと共に、これらの酸化物と
溶湯中の不純物元素であるＣｒ及びＺｒが反応して複合
酸化物となり被覆剤に吸収され、溶湯中の不純物を低減
させることが可能となる。ここでほう酸のみでも、或い
は酸化リチウム等の酸化剤のみでも上記の精錬効果は現
れない。さらに、この精錬剤はＳｎ，Ｐ，Ｚｎ，Ｎｉ等
とは反応せず、Ｃｒ，Ｚｒ等は除去する選択作用性を有
する。したがって、例えばＣｒ，Ｚｒが主たる含有元素
である銅合金を本法で溶解すると純銅が得られ、Ｃｒ，
Ｓｎ，Ｐが主たる含有元素である銅合金を本法で溶解す
るとりん青銅が得られる。上記の選択性の傾向からＴｉ
とも反応性があると考えられる。When the surface of a molten metal is coated with a refining agent obtained by adding an oxide such as lithium oxide to borax and / or boric acid, these mixed powders melt on the surface of the molten metal and cover this surface to prevent oxidation from the atmosphere. At the same time, these oxides react with Cr and Zr, which are impurity elements in the molten metal, to form a composite oxide, which is absorbed by the coating material, and the impurities in the molten metal can be reduced. Here, the above-mentioned refining effect does not appear even if only boric acid or only an oxidizing agent such as lithium oxide is used. Further, this refining agent does not react with Sn, P, Zn, Ni, etc., and has a selective action of removing Cr, Zr, etc. Therefore, for example, when a copper alloy containing Cr and Zr as main elements is melted by this method, pure copper is obtained, and Cr, Zr is obtained.
Phosphor bronze can be obtained by dissolving a copper alloy in which Sn and P are the main elements contained by this method. From the above selectivity tendency, Ti
Are considered to be reactive.
【０００７】ここで、総量を規定した理由について述べ
る。ほう酸中の酸化リチウム等を総量で５モル％以上４
０モル％未満と規定した理由は、５モル％以下になると
酸化物とＣｒ，Ｚｒの不純物元素の反応が著しく低減す
るためである。一方、４０モル％以上になると、不純物
元素との反応は良好であるが、酸化物が多くなるに従っ
て粘性が低下する。溶解炉及び保持炉は通常傾動させ
て、タンディッシュに溶湯を注湯し鋳造されるため、こ
れら複合酸化物を鋳造前に除去することが必要であるが
粘性が低いため被覆剤を除去する作業が容易でないこと
及び被覆剤が不安定となりガスを発生させるためであ
る。上述のように酸化ナトリウムは、ほう砂に含まれる
ものであってもよいので、本発明においてはほう砂（Ｎ
ａ2 Ｂ4 Ｏ7 ，化合物全体に対して酸化ナトリウム＝３
３．３モル％）を単独で使用することができる。また、
ほう砂に酸化ナトリウムを添加してもよいことは言うま
でもない。Here, the reason for defining the total amount will be described. 5 mol% or more of lithium oxide etc. in boric acid in total 4
The reason why the content is specified as less than 0 mol% is that when the content is less than 5 mol%, the reaction between the oxide and the impurity elements of Cr and Zr is remarkably reduced. On the other hand, when the content is 40 mol% or more, the reaction with the impurity element is good, but the viscosity decreases as the amount of oxide increases. Since the melting furnace and holding furnace are usually tilted and the molten metal is poured into the tundish and cast, it is necessary to remove these complex oxides before casting, but the work to remove the coating agent due to low viscosity Is not easy, and the coating agent becomes unstable and gas is generated. As described above, sodium oxide may be contained in borax. Therefore, in the present invention, borax (N
a 2 B 4 O 7 , sodium oxide = 3 relative to the whole compound
(3.3 mol%) alone. Also,
It goes without saying that sodium oxide may be added to borax.
【０００８】さらに、精錬剤の使用法は上述の方法や他
に、炭素被覆を施して溶解した銅合金溶湯を保持炉等に
移し、続いて本発明の精錬剤の被覆を行う方法、この移
湯の際に精錬剤と溶湯を同時に保持炉等に注湯し、その
後比重差により浮上した精錬剤による被覆状態を保持す
る方法等任意の使用法を採用することができる。Further, the method of using the refining agent is the above-mentioned method or the method of transferring the molten copper alloy which has been coated with carbon and melted to a holding furnace, and then coats the refining agent of the present invention. Any method such as a method in which the refining agent and the molten metal are simultaneously poured into a holding furnace or the like at the time of hot water, and thereafter the state of covering with the refining agent that floats due to a difference in specific gravity is maintained.
【０００９】[0009]
【作用】本発明によれば、溶解中にＣｒ，Ｚｒ等の不純
物元素が除去できるのみならず、溶湯と大気を完全に遮
断するように精錬剤で被覆すると溶湯の酸化防止にも役
立つ。以下、実施例により本発明を詳しく説明する。According to the present invention, not only impurity elements such as Cr and Zr can be removed during melting, but coating with a refining agent so as to completely shut off the molten metal from the atmosphere helps to prevent oxidation of the molten metal. Hereinafter, the present invention will be described in detail with reference to examples.
【００１０】[0010]
【実施例】真空雰囲気が可能な高周波溶解炉を用いて試
験を行った。所定の原料約１０ｋｇをカーボン製るつぼ
に装入し、溶解する際に酸化を防ぐためＡｒ雰囲気で溶
解し、１１３０℃になったところで図１（表１）に組成
を示す所定の被覆剤により溶湯を被覆した。被覆した直
後より溶湯内の不純物量を知るために所定時間経過後に
サンプリングを行い、溶湯の不純物濃度変化を調査し
た。図１（表１）に使用した原料、被覆剤及び被覆直後
及び被覆６０分後の不純物の濃度を示す。但し、Ｚｒ濃
度は被覆１０分後の値である。表中Ｎｏ．１〜４はＣ
ｒ，Ｚｒが残留したりん青銅の溶湯、Ｎｏ．５，６はＣ
ｒ，又はＺｒが残留した黄銅の溶湯、Ｎｏ．７，８はＣ
ｒ，又はＺｒが残留した洋白の溶湯である。本発明の成
分範囲の被覆剤を使用すると、Ｃｒ及びＺｒの量が大き
く低減している。また、溶湯表面を被覆している間、溶
湯の酸化が防止されること及び被覆後の除去作業が容易
にできる。EXAMPLE A test was conducted using a high-frequency melting furnace capable of forming a vacuum atmosphere. About 10 kg of a predetermined raw material is charged into a carbon crucible and melted in an Ar atmosphere in order to prevent oxidation when melting. When the temperature reaches 1130 ° C., the molten metal is melted by a predetermined coating agent having a composition shown in FIG. 1 (Table 1). Was coated. Immediately after coating, sampling was performed after a predetermined time had elapsed in order to know the amount of impurities in the molten metal, and changes in the impurity concentration of the molten metal were investigated. FIG. 1 (Table 1) shows the raw materials used, the coating agent, and the impurity concentrations immediately after coating and 60 minutes after coating. However, the Zr concentration is a value 10 minutes after coating. No. in the table. 1-4 are C
r, Zr residual phosphor bronze melt, no. 5 and 6 are C
r, or a molten brass with Zr remaining, 7, 8 is C
This is a nickel-white molten metal in which r or Zr remains. The use of the coating agent in the component range of the present invention greatly reduces the amounts of Cr and Zr. Further, while coating the surface of the molten metal, oxidation of the molten metal can be prevented, and the removal operation after the coating can be easily performed.
【００１１】[0011]
【発明の効果】本発明によれば、溶湯中に混入したＣ
ｒ，Ｚｒの不純物元素を溶解時に直接除去することがで
きるため鋳塊の品質が安定すると共に成分不良等による
歩留まり低下が防げるばかりでなく、不純物を多く含ん
だ安価なスクラップでも使用することが可能となる。According to the present invention, C mixed in the molten metal
Since the impurity elements of r and Zr can be directly removed at the time of melting, the quality of the ingot is stabilized, and not only can the yield be prevented from being reduced due to defective components, but also inexpensive scraps containing a large amount of impurities can be used. Becomes
【図１】実施例及び比較例における配合成分、使用した
被覆材の種類、被覆前及び被覆６０分後の不純物濃度を
示す図表（表１）である。FIG. 1 is a table (Table 1) showing the blending components, the types of coating materials used, and the impurity concentrations before and after coating for 60 minutes in Examples and Comparative Examples.
Claims (4)
保持された銅もしくは銅合金溶湯表面を、ほう砂及びほ
う酸の少なくとも１種と、残部でかつ５モル％以上４０
モル％未満の、酸化リチウム、酸化カリウム及び前記ほ
う砂に含まれる酸化ナトリウムからなる群から選択され
た少なくとも１種以上とから実質的になる被覆剤で被覆
し、溶湯中に溶解したＣｒ，Ｚｒ等の不純物元素を除去
することを特徴とする銅又は銅合金溶湯中の不純物元素
の除去方法。1. A surface of a copper or copper alloy melt melted in a melting furnace or held in a holding vessel is mixed with at least one of borax and boric acid, and the balance of at least 5 mol% or more.
Less than mol% of at least one selected from the group consisting of lithium oxide, potassium oxide, and sodium oxide contained in the borax. A method for removing impurity elements in a molten copper or copper alloy, comprising removing impurity elements such as.
代えてもしくは該酸化ナトリウムとともに単独の酸化ナ
トリウムを使用する請求項１記載の不純物除去方法。2. The impurity removing method according to claim 1, wherein a single sodium oxide is used instead of or together with the sodium oxide contained in the borax.
残部でかつ５モル％以上４０モル％未満の、酸化リチウ
ム、酸化カリウム及び前記ほう砂に含まれる酸化ナトリ
ウムからなる群から選択された少なくとも１種以上とか
ら実質的になることを特徴とするＣｒ，Ｚｒ等を不純物
として含有する銅又は銅合金の精錬剤。3. At least one of borax and boric acid,
Cr which substantially consists of at least one selected from the group consisting of lithium oxide, potassium oxide, and sodium oxide contained in the borax, with the balance being 5 mol% or more and less than 40 mol%. For refining copper or copper alloys containing, Zr, etc. as impurities.
代えてもしくは該酸化ナトリウムとともに単独の酸化ナ
トリウムを使用する請求項３記載の銅又は銅合金の精錬
剤。4. The refining agent for copper or copper alloy according to claim 3, wherein a single sodium oxide is used instead of or together with the sodium oxide contained in the borax.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16905697A JPH1112666A (en) | 1997-06-25 | 1997-06-25 | Method for removing impurity element in molten copper or copper alloy and refining agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16905697A JPH1112666A (en) | 1997-06-25 | 1997-06-25 | Method for removing impurity element in molten copper or copper alloy and refining agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1112666A true JPH1112666A (en) | 1999-01-19 |
Family
ID=15879531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16905697A Pending JPH1112666A (en) | 1997-06-25 | 1997-06-25 | Method for removing impurity element in molten copper or copper alloy and refining agent |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1112666A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106367610A (en) * | 2016-08-31 | 2017-02-01 | 安徽枫慧金属股份有限公司 | High-efficiency aluminum solution purifying method |
| CN115558789A (en) * | 2022-08-31 | 2023-01-03 | 昆明理工大学 | Recovery method of waste copper-lithium composite belt |
-
1997
- 1997-06-25 JP JP16905697A patent/JPH1112666A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106367610A (en) * | 2016-08-31 | 2017-02-01 | 安徽枫慧金属股份有限公司 | High-efficiency aluminum solution purifying method |
| CN115558789A (en) * | 2022-08-31 | 2023-01-03 | 昆明理工大学 | Recovery method of waste copper-lithium composite belt |
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