JP2848474B2 - Copper anodic casting method - Google Patents
Copper anodic casting methodInfo
- Publication number
- JP2848474B2 JP2848474B2 JP3356792A JP35679291A JP2848474B2 JP 2848474 B2 JP2848474 B2 JP 2848474B2 JP 3356792 A JP3356792 A JP 3356792A JP 35679291 A JP35679291 A JP 35679291A JP 2848474 B2 JP2848474 B2 JP 2848474B2
- Authority
- JP
- Japan
- Prior art keywords
- copper
- mold
- casting
- anode
- oil
- 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.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D25/00—Special casting characterised by the nature of the product
- B22D25/02—Special casting characterised by the nature of the product by its peculiarity of shape; of works of art
- B22D25/04—Casting metal electric battery plates or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C23/00—Tools; Devices not mentioned before for moulding
- B22C23/02—Devices for coating moulds or cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mold Materials And Core Materials (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は鋳型に溶銅を注湯して銅
アノ−ドを鋳造する方法であり、特に銅アノ−ドの縁部
における鋳張り発生を防止することのできる銅アノ−ド
の鋳造方法である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of casting copper anodic by pouring molten copper into a mold, and particularly to a copper anodic capable of preventing the occurrence of casting at the edge of the copper anodic. This is a method of casting a metal.
【０００２】[0002]
【従来の技術】銅電解用アノ−ドの鋳造方法としては図
１に図示されるように、水平に配置された鋳型Ｍに溶銅
を注湯するウォルカ−方式が広く利用されている。2. Description of the Related Art As a method for casting an anode for copper electrolysis, as shown in FIG. 1, a Walker method in which molten copper is poured into a horizontally arranged mold M is widely used.
【０００３】従来のアノ−ド用鋳型Ｍは、鋳鋼などで形
成された所定形状の鋳型に、例えば、溶錬工程の最終段
階である精製炉から出た銅品位９９．３％前後の精製粗
銅を注湯することにより作製されるが、その形状は一般
に、アノ−ドと同形状とされる基台部１と、該基台部１
の該周辺を取り囲み、かつ基台部１の上面１ａより所定
高さ（約６０〜７０ｍｍ）だけ上方へと突出した縁部２
とを有する。即ち、アノ−ド用鋳型Ｍは、基台部１の上
面１ａと、基台部上面１ａより上方へと突出した部分の
縁部２の内側周囲面２ａとして画成された凹所Ｓを備
え、該凹所Ｓに精製粗銅からなる溶銅を注湯することに
より図２に示す銅アノ−ドＡが形成される。[0003] A conventional anode mold M is prepared by adding a purified crude copper having a copper grade of about 99.3% discharged from a refining furnace, which is the final stage of a smelting process, to a mold having a predetermined shape made of cast steel or the like. And a base 1 having the same shape as the anode, and a base 1 having the same shape as the anode.
Edge 2 surrounding the periphery and projecting upward from the upper surface 1a of the base 1 by a predetermined height (about 60 to 70 mm).
And That is, the anode mold M has an upper surface 1a of the base 1 and a recess S defined as an inner peripheral surface 2a of the edge 2 of a portion projecting upward from the upper surface 1a of the base. By pouring molten copper made of purified blister copper into the recess S, a copper anode A shown in FIG. 2 is formed.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記ウ
ォルカ−方式に従って、鋳型Ｍを使用して水平鋳造を行
う場合、溶銅を鋳型に注湯したとき、鋳造されたアノ−
ドＡには、図１に図示するように、鋳型Ｍと溶湯の界面
部位に相当するアノ−ドＡの上側外周縁部ａに鋳張りが
形成された。このような鋳張りの発生を防止するのは非
常に困難である。However, when horizontal casting is performed using the mold M in accordance with the above-mentioned Wolker method, when molten copper is poured into the mold, the cast anolyte is cast.
As shown in FIG. 1, a casting was formed on an upper outer peripheral edge a of an anode A corresponding to an interface between the mold M and the molten metal. It is very difficult to prevent such casting.
【０００５】又、かかるアノ−ドの鋳張りは、銅の電解
精製に際して、種板（カソ−ド）の挿入を阻害するなど
のアノ−ド整列機でのトラブルや、種板と接触し電気分
解時のショ−トの原因となり、電流効率の悪化要因とな
っている。このような問題を解決する方法として、従来
は溶湯温度、注湯速度、注湯高さ、及び鋳型温度、冷却
水量などを調整することによって行われているが、いず
れも条件を一定に制御するのが困難であり鋳張り防止技
術は確立されていないのが、現状である。[0005] In addition, such anodic casting involves troubles in an anodic aligning machine such as obstruction of insertion of a seed plate (cathode) during electrolytic refining of copper, and electric contact with the seed plate. This causes a short circuit at the time of disassembly and causes a deterioration in current efficiency. Conventionally, as a method for solving such a problem, a melt temperature, a pouring speed, a pouring height, a mold temperature, a cooling water amount, and the like are adjusted. It is difficult at present and the technology for preventing casting has not been established.
【０００６】従って本発明の目的は、銅の電解精製に際
して、アノ−ド整列機でのトラブルや、電気分解時のシ
ョ−ト原因となり電流効率の悪化をもたらす、鋳張りの
ない銅アノ−ドの鋳造方法を提供することである。SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a copper anode without casting, which causes a trouble in an anode aligner and a short circuit at the time of electrolysis during electrolytic refining of copper, resulting in deterioration of current efficiency. Is to provide a casting method.
【０００７】[0007]
【問題を解決するための手段】上記目的は、本発明に係
る銅アノ−ドの鋳造方法にて達成される。即ち、本発明
は、鋳型に溶銅を注湯して銅アノ−ドを鋳造する方法に
おいて、溶銅を鋳型に注湯するに先立って、燃焼後耐火
物粉となる物質を含むオイルを鋳型の内側周囲に散布あ
るいは塗布することにより鋳張り発生を防止する銅アノ
−ドの鋳造方法である。以下本発明について具体的に説
明する。The above object is achieved by a method for casting a copper anode according to the present invention. That is, the present invention relates to a method for casting copper anodic by pouring molten copper into a mold, wherein before the molten copper is poured into the mold, oil containing a substance which becomes refractory powder after combustion is cast. This is a method for casting copper anodic to prevent the occurrence of casting by spraying or applying to the inside periphery of the copper anode. Hereinafter, the present invention will be described specifically.
【０００８】本発明においては、銅アノ−ドを鋳造する
に際し、予め、鋳型の内側周囲（図１、２ａ）に、燃焼
後耐火物粉となる物質を含むオイルを散布或は塗布す
る。ここで銅アノ−ドは、電気銅（約９９．９９ｗｔ％
Ｃｕ）を製造する場合の電気分解用アノ−ドとなるもの
である。In the present invention, when casting a copper anode, an oil containing a substance which becomes a refractory powder after combustion is sprayed or applied beforehand around the inside of the mold (FIGS. 1 and 2a). Here, the copper anode is electrolytic copper (about 99.99% by weight).
This is an anode for electrolysis when producing Cu).
【０００９】銅アノ−ドを製造する際に、鋳型に注湯す
る溶銅は、約９９．３ｗｔ％Ｃｕからなる粗銅である。
銅アノ−ドは、電気分解に際し、ショ−ト等が生じない
ため、その外周縁部は、滑らかな表面をなしていること
が望ましい。そこで本発明では、燃焼後耐火物粉となる
物質を含むオイルを鋳型の内側周囲（図１、２ａ）に、
散布或は塗布することが極めて効果的であることを見出
した。The molten copper poured into the mold when producing the copper anode is blister copper made of about 99.3 wt% Cu.
Since the copper anode does not cause a short or the like during the electrolysis, it is preferable that the outer peripheral edge has a smooth surface. Therefore, in the present invention, an oil containing a substance that becomes refractory powder after combustion is applied around the inside of the mold (FIGS. 1 and 2a).
Spraying or applying has been found to be extremely effective.
【００１０】燃焼後耐火物粉となる物質を含むオイルと
は、例えばシリコンオイルやアルミを含むオイル等、溶
湯（約１１００〜１２００℃）と接触し、燃焼後ＳｉＯ
2、Ａｌ2Ｏ3等の耐火物粉となるものである。この粉に
より、溶湯を注湯した際、鋳型内側周囲（図１、２ａ）
と溶湯との界面に鋳張りが発生せず得られる銅アノ−ド
の上側外周縁部ａは、極めて滑らかなものができるので
ある。The oil containing a substance which becomes refractory powder after burning is brought into contact with a molten metal (about 1100 to 1200 ° C.) such as silicon oil or oil containing aluminum, etc.
2. It becomes a refractory powder such as Al 2 O 3 . When the molten metal is poured by this powder, around the inside of the mold (Fig. 1, 2a)
The upper outer peripheral edge a of the copper anode obtained without casting at the interface between the metal and the molten metal can be made extremely smooth.
【００１１】さらに、上記現象は鋳型内側周囲に付着し
た耐火物粉が、耐火物自信を塗布するよりも極めて効果
的に、溶湯と鋳型の間に介在することによって、溶湯の
濡れ性を悪くし、また鋳型内側周囲付近の熱伝達率を低
下させ、鋳張りのない極めて滑らかな銅アノードを得る
ものと思われる。耐火物粉となる物質を含むオイルは、
鋳型内側周囲に均一に散布或は塗布することを要する。
この点から粘度特性も重要であり、９０〜１１０ｃｓｔ
の範囲とする。これはあまり動粘度が高い場合は、スプ
レーガン等による能率的散布ができないからである。上
記オイルの例としてはポリジメチルシロキサン等を用い
る。[0011] Furthermore, the above-mentioned phenomenon causes the refractory powder adhering to the inside of the mold to intervene between the molten metal and the mold much more effectively than applying the refractory itself, thereby deteriorating the wettability of the molten metal. It is also believed that the heat transfer coefficient near the inner periphery of the mold is reduced to obtain a very smooth copper anode without casting. Oils that contain refractory powders
It needs to be sprayed or applied uniformly around the inside of the mold.
Viscosity characteristics from this point also Ri important, 90～110Cst
Range . This is because if the kinematic viscosity is too high, efficient spraying with a spray gun or the like cannot be performed. Polydimethylsiloxane or the like is used as an example of the oil.
【００１２】更に、上記オイルは、鋳型に対し５〜１０
ｃｃ／枚（図１の２ａの部分１ｍ2あたり２５〜５０ｃ
ｃ）程度散布或は塗布することが好ましい。５ｃｃ／枚
より少なくては、所期の目的が達成できず、１０ｃｃ／
枚より多い場合は、過多になるだけだからである。また
鋳型内側周囲にのみ散布あるいは塗布等すれば極めて顕
著な効果があることが、本発明の特徴である。従って上
記オイルの使用量も少なくて良いのである。上記の塗布
等は、例えば、特願平２−３１７４１２号に開示した装
置を用いて行う。Further, the oil is added to the mold in an amount of 5 to 10
cc / sheet (25 to 50c per 1 m 2 of 2a in FIG. 1)
c) It is preferable to spray or apply to the extent. If it is less than 5 cc / sheet, the intended purpose cannot be achieved and 10 cc /
If the number is more than the number, the number will only be excessive. It is a feature of the present invention that a very remarkable effect can be obtained by spraying or coating only around the inside of the mold. Therefore, the amount of the oil used may be small. The above-described coating and the like are performed using, for example, an apparatus disclosed in Japanese Patent Application No. 2-317412.
【００１３】[0013]
【実施例】粗銅（銅品位９９．３ｗｔ％）の溶湯を２６
０アノ−ド枚／ｈｒ（８４〜８６Ｔ／ｈｒ）の鋳造スピ
−ドで、鋳造する際に、上記溶湯を注湯する前にシリコ
−ンオイル（東芝シリコ−ン（株）製）を図３に示す散
布装置により７ｃｃ／鋳型一枚散布した。図３におい
て、鋳型搬送手段（１００）上にの乗せられた鋳型Ｍに
オイル散布装置（５０）により散布する。散布ノズル
（５１）からオイルが、鋳型内壁２ａ１〜２ａ９に散布
できるように制御手段（５３）により、制御し、オイル
供給管（５２）を介して、オイルを供給した。EXAMPLE A molten copper (copper grade: 99.3 wt%) was melted into 26
FIG. 3 shows a silicon oil (manufactured by Toshiba Silicone Co., Ltd.) before casting the molten metal at the time of casting at a casting speed of 0 anode sheets / hr (84 to 86 T / hr). 7 cc / one mold was sprayed by the spraying device shown in FIG. In FIG. 3, the oil is sprayed on the mold M placed on the mold conveying means (100) by an oil spraying device (50). The control means (53) controlled the oil so as to be able to spray oil from the spray nozzle (51) to the mold inner walls 2a1-2a9, and supplied the oil via the oil supply pipe (52).
【００１４】参考写真１に示すように鋳型スピ−ド８〜
１０Ｔ／ｈｒ増にしても、散布しないものに比べアノ−
ドの外周が極めて平滑なものが得られた。またこのアノ
−ドを使用して、電気分解をして電気銅を得た際、ショ
−ト数が、従来法に比べ約５０％低減し、電流効率も９
６％と従来よりも約１％上昇し、極めて、良好なアノ−
ドであることを把握した。As shown in Reference Photo 1, the mold speed 8 ~
Even if it increases by 10T / hr, it is better
An extremely smooth outer periphery of the metal was obtained. In addition, when electrolytic copper is obtained by electrolysis using this anode, the number of shorts is reduced by about 50% as compared with the conventional method, and the current efficiency is 9%.
6%, about 1% higher than before, extremely good ano-
I knew it was
【００１５】[0015]
【比較例】実施例と同じ鋳造装置を用いて、粗銅の量を
７６Ｔ／ｈｒ（２３０アノ−ド枚／ｈｒ）と鋳造スピ−
ドを遅くし、シリコ−ンオイル等を散布せず鋳造したと
ころ参考写真２に示すように、左右両端が滑らかでな
く、好ましいアノ−ドは得られなかった。Comparative Example Using the same casting apparatus as in the example, the amount of blister copper was set to 76 T / hr (230 anode sheets / hr) and the casting speed was increased.
When casting was carried out without spraying silicone oil or the like, the right and left ends were not smooth as shown in Reference Photo 2, and a favorable anode could not be obtained.
【００１６】[0016]
【発明の効果】以上のごとく構成される本発明に従った
銅アノ−ドの鋳造方法は、以下のような効果を有する。 （１）鋳張りのないアノ−ドが得られる。 （２）従来、鋳造スピ−ドをアップするとアノ−ドの鋳
張り発生が顕著になるため、アノ−ド鋳型枚数は２３０
枚／ｈｒに制御されていたが、本発明により２６０枚／
ｈｒにまでアップできる。 （３）電解工程でのアノ−ドとカソ−ドのショ−ト数が
半減する。 （４）３の効果により、電解の電流効率が９５％から９
６％に１％アップする。The copper anode casting method according to the present invention having the above-described structure has the following effects. (1) An anode without casting is obtained. (2) Conventionally, when the casting speed is increased, the occurrence of anodic casting becomes remarkable.
Was controlled at a rate of 260 sheets / hr.
hr. (3) The number of anode and cathode shots in the electrolytic process is reduced by half. (4) Due to the effect of 3, the electrolysis current efficiency is increased from 95% to 9
Increase 1% to 6%.
【図１】は、鋳型の斜視図である。FIG. 1 is a perspective view of a mold.
【図２】は、アノ−ドの斜視図である。FIG. 2 is a perspective view of an anode.
【図３】は、銅電解用アノ−ドの鋳造装置の構成を示す
斜視図である。FIG. 3 is a perspective view showing a configuration of a casting apparatus for an anode for copper electrolysis.
Ｍは、鋳型 １は、基台部 １ａは、基台部上面 ２は、縁部 ２ａは、内側周囲面 Ｓは、凹所 Ａは、銅アノ−ド ２ａ1〜２ａ2は、内側周囲面 １００は、鋳型搬送手段 ５０は、オイル散布装置 ５１は、散布ノズル ５２は、オイル供給管 ５３は、制御手段をを示す。M is the mold 1, the base part 1a has base portion upper surface 2, the edge 2a, the inner peripheral surface S, the recess A is copper anode - de 2a 1 to 2A region 2, an inner peripheral surface 100 denotes a mold conveying means 50; an oil spraying device 51; a spraying nozzle 52; and an oil supply pipe 53, a control means.
フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) B22D 25/04 B22C 3/00Continuation of front page (58) Field surveyed (Int.Cl. 6 , DB name) B22D 25/04 B22C 3/00
Claims (1)
する方法において、溶銅を鋳型に注湯するに先立って、
溶銅との接触による燃焼後耐火物粉となる物質を含みか
つ粘度が９０〜１１０ｃｓｔのオイルを鋳型の内側周囲
に散布あるいは塗布することにより鋳張り発生を防止す
ることを特徴とする銅アノードの鋳造方法。1. A method of casting molten copper into a mold to cast a copper anode, wherein prior to pouring the molten copper into the mold,
Does it contain refractory powder after combustion by contact with molten copper ?
A method for casting a copper anode, comprising spraying or applying oil having a viscosity of 90 to 110 cst around the inside of a mold to prevent the occurrence of casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3356792A JP2848474B2 (en) | 1991-12-26 | 1991-12-26 | Copper anodic casting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3356792A JP2848474B2 (en) | 1991-12-26 | 1991-12-26 | Copper anodic casting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05309471A JPH05309471A (en) | 1993-11-22 |
| JP2848474B2 true JP2848474B2 (en) | 1999-01-20 |
Family
ID=18450795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3356792A Expired - Fee Related JP2848474B2 (en) | 1991-12-26 | 1991-12-26 | Copper anodic casting method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2848474B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3124447B2 (en) * | 1994-05-09 | 2001-01-15 | 日鉱金属株式会社 | Method and apparatus for applying anti-casting agent |
| DE19810032A1 (en) * | 1998-03-09 | 1999-09-16 | Acheson Ind Inc | Method and device for preparing the mold walls of a mold for primary shaping or shaping for the next molding cycle, spray element with centrifugal atomization and air guidance and use of such a spray element for spraying essentially solvent-free mold wall treatment agents |
-
1991
- 1991-12-26 JP JP3356792A patent/JP2848474B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05309471A (en) | 1993-11-22 |
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