JPH05309471A - Method for casting copper anode - Google Patents
Method for casting copper anodeInfo
- Publication number
- JPH05309471A JPH05309471A JP3356792A JP35679291A JPH05309471A JP H05309471 A JPH05309471 A JP H05309471A JP 3356792 A JP3356792 A JP 3356792A JP 35679291 A JP35679291 A JP 35679291A JP H05309471 A JPH05309471 A JP H05309471A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- copper
- casting
- anode
- molten 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.)
- Granted
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)
Abstract
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 pouring molten copper into a mold to cast a copper anode, and in particular, a copper anode capable of preventing the occurrence of cast-in at the edge of the copper anode. -This is a casting method for dough.
【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。The conventional anodic mold M is, for example, a refined crude copper with a copper quality of about 99.3% which is produced from a refining furnace which is the final stage of the smelting process in a mold of a predetermined shape formed of cast steel or the like. It is produced by pouring molten metal, and its shape is generally the same as that of the anodic base 1, and the pedestal 1
An edge portion 2 surrounding the periphery of the base 2 and protruding upward from the upper surface 1a of the base portion 1 by a predetermined height (about 60 to 70 mm).
Have and. That is, the anodic mold M comprises the upper surface 1a of the base 1 and the recess S defined as the inner peripheral surface 2a of the edge 2 of the portion projecting upward from the upper surface 1a of the base. By pouring molten copper made of purified crude copper into the recess S, the 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 performing horizontal casting using the mold M according to the above-mentioned Walker method, when molten copper is poured into the mold, the cast anode
As shown in FIG. 1, a casting was formed on the upper peripheral edge portion a of the anode A corresponding to the 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。Further, the casting of the anodes causes troubles in the anodic aligning machine, such as obstructing the insertion of the seed plate (cathode) during the electrolytic refining of copper, and electrical contact by contact with the seed plate. This causes a short at the time of disassembly, which is a cause of deterioration of current efficiency. As a method for solving such a problem, conventionally, it is carried out by adjusting the molten metal temperature, the pouring speed, the pouring height, the mold temperature, the cooling water amount, etc., but all conditions are controlled to be constant. The current situation is that casting prevention technology 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。Therefore, an object of the present invention is to provide a copper anode without casting, which causes troubles in an anodic aligning machine during electrolytic refining of copper and causes shortage during electrolysis, resulting in deterioration of current efficiency. It is to provide a casting method of.
【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 can be achieved by the copper anodic casting method according to the present invention. That is, the present invention is a method of pouring molten copper into a mold to cast a copper anodic, prior to pouring molten copper into the mold, an oil containing a substance that becomes refractory powder after combustion is cast into the mold. It is a method of casting a copper anode that prevents the occurrence of cast-in by spraying or applying it on the inner periphery of the. The present invention will be specifically described below.
【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 a copper anodic is cast, oil containing a substance which becomes refractory powder after combustion is sprayed or applied to the inner periphery of the mold (FIGS. 1 and 2a) in advance. Here, the copper anode is electrolytic copper (about 99.99 wt%
It 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 during the production of the copper anode is crude copper composed of about 99.3 wt% Cu.
Since copper anodes do not cause shorts or the like during electrolysis, it is desirable that the outer peripheral edge portion of the copper anodes have a smooth surface. Therefore, in the present invention, an oil containing a substance that becomes refractory powder after combustion is provided around the inner side of the mold (FIGS. 1 and 2a).
It has been found that spraying or applying is 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 combustion is, for example, a silicon oil or an oil containing aluminum, which is brought into contact with a molten metal (about 1100 to 1200 ° C.) to form SiO after combustion.
2 , which becomes refractory powder such as Al 2 O 3 . When pouring the molten metal with this powder, around the inside of the mold (Figs. 1 and 2a)
The upper outer peripheral edge portion a of the copper anode obtained without casting at the interface between the molten metal and the molten metal can be extremely smooth.
【００１１】さらに、上記の現象は、鋳型内側周囲に付
着した耐火物粉が、耐火物粉自身を塗布するよりも極め
て効果的に、溶湯と鋳型との間に界在することによっ
て、溶湯との濡れ性を悪くし、また鋳型の内側周囲付近
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−ドを得るものと思われる。燃焼後耐火物粉となる
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
る。好ましい範囲は、５０〜３５０ｃＳｔである。より
好ましくは、９０〜１１０ｃＳｔである。これは、あま
り動粘度が高い場合は、スプレ−ガン等よる能率的な散
布ができないからである。上記オイルの例としては、ポ
リジメチルシキロサン等を用いる。Further, the above phenomenon is caused by the fact that the refractory powder adhered to the inner periphery of the mold intervenes between the molten metal and the mold much more effectively than when the refractory powder itself is applied. It is thought that the wettability of copper is deteriorated and the heat transfer coefficient in the vicinity of the inner periphery of the mold is lowered to obtain an extremely smooth copper anode without casting. The oil containing the substance that becomes refractory powder after combustion needs to be uniformly sprayed or applied around the inside of the mold. From this point, the viscosity characteristic is also important. A preferred range is 50 to 350 cSt. More preferably, it is 90 to 110 cSt. This is because if the kinematic viscosity is too high, efficient spraying with a spray gun or the like cannot be performed. As an example of the above-mentioned oil, polydimethylcyclosiloxane or the like is used.
【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 used in an amount of 5-10 with respect to the mold.
cc / sheet (25 to 50 c per 1 m 2 of the portion 2a in FIG. 1)
It is preferable to spray or apply c). If less than 5 cc / sheet, the intended purpose cannot be achieved and 10 cc / sheet
This is because if there are more than the number of sheets, there will only be too many. Further, it is a feature of the present invention that a very remarkable effect can be obtained by spraying or applying only on the inner periphery of the mold. Therefore, the amount of the oil used may be small. The above-mentioned coating and the like are performed using, for example, the 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] 26 molten copper (copper grade 99.3 wt%)
With a casting speed of 0 anodes / hr (84 to 86 T / hr), when casting, silicone oil (manufactured by Toshiba Silicone Co., Ltd.) is used before pouring the molten metal. 7 cc / one mold was sprayed by the spraying device shown in FIG. In FIG. 3, the oil is sprayed by the oil spraying device (50) on the mold M placed on the mold transporting means (100). Oil was supplied from the spray nozzle (51) through the oil supply pipe (52) by the control means (53) so that the oil could be sprayed onto the inner walls 2a1 to 2a9 of the mold.
【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, mold speed 8 to 8
Even if 10T / hr increase, compared to the one without spraying
The outer circumference of the cord was extremely smooth. When this anode is used for electrolysis to obtain electrolytic copper, the number of shorts is reduced by about 50% as compared with the conventional method, and the current efficiency is 9%.
6%, which is about 1% higher than the conventional one and is extremely good.
I understood that it was a de.
【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 equipment as in the example, the amount of blister copper was 76 T / hr (230 anodes / hr) and the casting speed was set.
As shown in Reference Photo 2, the left and right ends were not smooth, and a favorable anode was not obtained when the casting was carried out with a slower speed and without spraying silicone oil or the like.
【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 anodic casting method according to the present invention constructed as described above has the following effects. (1) An anode without casting can be obtained. (2) Conventionally, when the casting speed is increased, the occurrence of anodic casting becomes remarkable, so the number of anodic molds is 230
Although it was controlled to the number of sheets / hr, 260 sheets /
Can be up to hr. (3) The number of shorts of anode and cathode in the electrolysis process is halved. (4) Due to the effect of 3, the current efficiency of electrolysis is 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 the construction of a casting apparatus for an anod 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 Reference numeral 100 denotes a mold conveying means 50, an oil spraying device 51, a spraying nozzle 52, an oil supply pipe 53, and a control means.
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、
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
することを特徴とする銅アノ−ドの鋳造方法。1. A method of pouring molten copper into a mold to cast a copper anode, prior to pouring molten copper into the mold,
A method for casting copper anodes, characterized in that the occurrence of casting is prevented by spraying or applying an oil containing a substance which becomes refractory powder after combustion around the inside of the mold.
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 true JPH05309471A (en) | 1993-11-22 |
| JP2848474B2 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) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5536318A (en) * | 1994-05-09 | 1996-07-16 | Nippon Mining & Metals Co., Ltd. | Apparatus for coating molds with finning preventive agent |
| JPH11254086A (en) * | 1998-03-09 | 1999-09-21 | Acheson Ind Inc | Method and device for preparing mold wall for casting or forming to following casting cycle, atomized element with centrifugal separation and air control and using method for atomizing treatment for atomizing mold wall treating agent without substantially containing solvent |
-
1991
- 1991-12-26 JP JP3356792A patent/JP2848474B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5536318A (en) * | 1994-05-09 | 1996-07-16 | Nippon Mining & Metals Co., Ltd. | Apparatus for coating molds with finning preventive agent |
| US5702758A (en) * | 1994-05-09 | 1997-12-30 | Nippon Mining & Metals Co., Ltd. | Method for coating with finning preventive agent |
| JPH11254086A (en) * | 1998-03-09 | 1999-09-21 | Acheson Ind Inc | Method and device for preparing mold wall for casting or forming to following casting cycle, atomized element with centrifugal separation and air control and using method for atomizing treatment for atomizing mold wall treating agent without substantially containing solvent |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2848474B2 (en) | 1999-01-20 |
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