JP2020128580A - Liquid feeding method of feeding electrolytic solution into electrolysis tank for electrorefining - Google Patents

Liquid feeding method of feeding electrolytic solution into electrolysis tank for electrorefining Download PDF

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JP2020128580A
JP2020128580A JP2019021889A JP2019021889A JP2020128580A JP 2020128580 A JP2020128580 A JP 2020128580A JP 2019021889 A JP2019021889 A JP 2019021889A JP 2019021889 A JP2019021889 A JP 2019021889A JP 2020128580 A JP2020128580 A JP 2020128580A
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liquid supply
liquid
electrolytic
electrolysis tank
electrolytic cell
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JP7309123B2 (en
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智暁 米山
Tomoaki Yoneyama
智暁 米山
洋平 山口
Yohei Yamaguchi
洋平 山口
和己 竹中
Kazumi Takenaka
和己 竹中
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Sumitomo Metal Mining Co Ltd
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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
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Abstract

To provide a liquid feeding method of feeding a liquid into an electrolysis tank, which method improves the quality of electrolytic copper and decreases lifting of slime caused by feeding a liquid into an electrolysis tank when liquid circulation is carried out in the electrolysis tank, without requiring a large-scale plant modification.SOLUTION: The liquid feeding method of feeding an electrolytic solution into an electrolysis tank for electrorefining nonferrous metal by arranging a plurality of electrodes parallel to each other in an electrolysis tank for electrorefining, and installing a liquid feed pipe comprising at least two liquid feed ports or openings in the normal direction relative to the surfaces of the electrodes, is characterized in that at least two liquid feed ports include a liquid feed port or an opening disposed at the front end of the liquid feed pipe installed along the bottom of the electrolysis tank from one of the electrolysis tank walls disposed in the normal direction relative to the surfaces of the electrodes to the lower part of the other of the electrolysis tank walls and a liquid feed port or an opening disposed at the front end of a liquid feed pipe branched from the middle part of the liquid feed pipe and installed parallel to the liquid feed pipe.SELECTED DRAWING: Figure 1

Description

本発明は、非鉄金属を電解精製もしくは電解採取する工程において、不純物の混入を低減する電解液の給液方法に関する。 The present invention relates to a method of supplying an electrolytic solution for reducing contamination of impurities in a step of electrolytically refining or electrolytically extracting a non-ferrous metal.

銅などの金属の電解精製では、電解槽に陰極板（以下、カソードと称す）と、陽極板（以下、アノードと称す）の各極板を交互に配置し、電解槽内に装入し、所定量の電解液で槽内を満たして通電する。この際に用いられる電解槽は、特許文献１及び特許文献２に記載されたような、電極表面に対し直交方向の電解槽側壁の一方に給液する方法が一般的である。また、アノードの表面近傍の電解液は、通電により銅濃度が高くなり、したがって比重が大きくなり、アノードの表面近傍から電解液の下降流が発生する。これに伴い、電解槽底部には高銅濃度の電解液が蓄積しやすく正常な通電を妨げる。そこで、電解液成分を均一化するために、特許文献１〜３に記載の方法のように効率的に液循環する方法が開発されてきた。 In electrolytic refining of metals such as copper, a cathode plate (hereinafter, referred to as a cathode) and an anode plate (hereinafter, referred to as an anode) are alternately arranged in an electrolyzer, and placed in the electrolyzer. The inside of the tank is filled with a predetermined amount of electrolytic solution to conduct electricity. As the electrolytic bath used at this time, a method of supplying liquid to one of the side walls of the electrolytic bath in a direction orthogonal to the electrode surface is generally used as described in Patent Document 1 and Patent Document 2. Further, the electrolytic solution near the surface of the anode has a high copper concentration due to energization, and therefore has a large specific gravity, and a downward flow of the electrolytic solution is generated from near the surface of the anode. Along with this, an electrolytic solution having a high copper concentration easily accumulates at the bottom of the electrolytic cell, which prevents normal energization. Therefore, in order to homogenize the components of the electrolytic solution, a method for efficiently circulating the liquid has been developed as in the methods described in Patent Documents 1 to 3.

このような液循環に伴う負の効果は、スライムなどの固形物の巻き込みが電解精製中に発生しがちなことである。特許文献１及び特許文献２に記載されるように、一カ所から大量の電解液を流すと、給液口付近からカソード付近までスライムを巻き上げてカソード（電気銅など）に不純物として取り込ませる恐れ（巻き込みリスク）が増大する。一方、特許文献３にように、複数個所から給液を行うと、一カ所当たりの流量が小さくなりスライム巻き込みリスクは低減するが、給液口の小経化により配管が閉塞する恐れが高まることから、スライムの巻き上げを抑制しながらも、液循環を維持する手法が求められていた。 The negative effect of such liquid circulation is that entrainment of solids such as slime is likely to occur during electrolytic refining. As described in Patent Documents 1 and 2, when a large amount of electrolytic solution is flown from one place, slime may be rolled up from the vicinity of the liquid supply port to the vicinity of the cathode and taken into the cathode (electrolytic copper or the like) as an impurity ( Risk of involvement) increases. On the other hand, when the liquid is supplied from a plurality of locations as in Patent Document 3, the flow rate per location is reduced and the risk of entraining slime is reduced, but the risk of clogging of the pipe increases due to the smaller diameter of the liquid supply port. Therefore, there has been a demand for a method of maintaining the liquid circulation while suppressing the winding of slime.

特開平１０−１８３３８９号公報JP, 10-183389, A 特許６０６５７０６号公報Japanese Patent No. 6065706 特開２０１７−０５７５０８号公報JP, 2017-0557508, A

本発明は上記の問題点を鑑み、大掛かりな設備改造を必要とせずに、液循環を実施した場合でも、電解槽への給液による固形物の巻き上げを低減する給液方法を提供することを目的とする。 In view of the above problems, the present invention provides a liquid supply method that reduces the hoisting of solids due to the liquid supply to the electrolytic cell, even when liquid circulation is performed without requiring major facility modification. To aim.

上記目的を達成するため、本発明の第１の発明は非鉄金属の電解精製用電解槽への電解液の給液方法であって、前記電解精製用電解槽内に、複数の電極を平行に配置し、前記電極の表面における法線方向に敷設された給液配管に、少なくとも２口の開口部である給液口を有することを特徴とする電解精製用電解槽への電解液の給液方法である。 In order to achieve the above object, the first invention of the present invention is a method for supplying an electrolytic solution to an electrolytic cell for electrolytic purification of non-ferrous metal, wherein a plurality of electrodes are arranged in parallel in the electrolytic cell for electrolytic purification. A liquid supply pipe that is disposed and has a liquid supply port that is at least two openings in a liquid supply pipe that is laid in a direction normal to the surface of the electrode. Is the way.

本発明の第２の発明は、第１の発明における前記少なくとも２口の給液口が、前記電極の表面における法線方向にある電解槽壁の一方側から前記電解槽壁から電解槽底に沿って他方の電解槽壁の下部まで敷設された給液配管の先端部に設けられた開口部である給液口と、前記給液配管の中間部から分岐し、前記給液配管と平行に敷設された給液配管の先端部に設けられた開口部である給液口を含むことを特徴とする電解精製用電解槽への電解液の給液方法である。 2nd invention of this invention WHEREIN: The said at least 2 liquid supply ports in 1st invention are from the one side of the electrolytic cell wall in the normal direction in the surface of the said electrode to the electrolytic cell bottom from the said electrolytic cell wall. A supply port that is an opening provided at the tip of the liquid supply pipe laid down to the lower part of the other electrolytic cell wall along the side, and branched from the middle part of the liquid supply pipe, in parallel with the liquid supply pipe. A method for supplying an electrolytic solution to an electrolytic cell for electrolytic refining, comprising a solution supply port which is an opening provided at a tip of a laid solution supply pipe.

本発明の第３の発明は、第１及び第２の発明における全ての給液口が、前記電解液を同じ方向に給液するように設けられた開口部であることを特徴とする電解槽への給液方法である。 A third invention of the present invention is an electrolytic cell, wherein all the liquid supply ports in the first and second inventions are openings provided so as to supply the electrolytic solution in the same direction. Is a liquid supply method to.

本発明によれば、銅の電解精製を行う際に、液循環を実施した場合でも電解槽への給液による固形物の巻き上げを低減することを可能とする。 According to the present invention, when electrolytically refining copper, even when liquid circulation is performed, it is possible to reduce winding up of solid matter due to liquid supply to the electrolytic cell.

電解槽給液箇所を示す模式図で、（ａ）は上面図、（ｂ）は図１（ａ）の「ａ−ａ´線」における断面図である。It is a schematic diagram which shows the electrolytic cell liquid supply location, (a) is a top view, (b) is sectional drawing in the "a' line" of FIG. 1(a). 給液部Ｐの実施態様の一つを示す外観図である。It is an external view which shows one of the aspects of the liquid supply part P. 同一方向に給液を行なう給液部Ｐの実施態様を示す外観図で、（ａ）は給液配管の敷設方向に対して直角な方向に給液を行なう例で、（ｂ）は給液配管の敷設方向に給液を行なう例である。FIG. 2 is an external view showing an embodiment of a liquid supply part P that supplies liquid in the same direction, (a) is an example in which liquid supply is performed in a direction perpendicular to the installation direction of the liquid supply pipe, and (b) is liquid supply. This is an example of supplying liquid in the laying direction of piping. 実施例と比較例での分岐給液口１０Ｂ付近における電解槽中のＳＳ濃度の測定結果である。It is a measurement result of SS concentration in the electrolytic cell in the vicinity of the branch supply port 10B in the example and the comparative example. 実施例と比較例での給液口１０Ａ付近における電解槽中のＳＳ濃度の測定結果である。It is a measurement result of SS concentration in the electrolytic cell in the vicinity of the liquid supply port 10A in the example and the comparative example.

本実施の形態の実施例に係る電解槽は、電解槽内に複数の電極を平行に配置し、その電極の表面における法線方向へと敷設された給液配管が、開口部として少なくとも２口の給液口を有することを特徴とする。 In the electrolytic cell according to the example of the present embodiment, a plurality of electrodes are arranged in parallel in the electrolytic cell, and the liquid supply pipe laid in the normal direction on the surface of the electrode has at least two ports as openings. It is characterized by having a liquid supply port of.

図１に本実施例に係る電解精製中における電解槽１の模式図を示す。（ａ）は上面図で、（ｂ）は図１（ａ）の「ａ−ａ´線」における断面図である。１は本実施例に係る電解槽、３はアノード、４はカソード、５はカソードとアノードで構成される電極で、右側がカソード表面、左側がアノード表面とする配置の電極、及び右側がアノード表面、左側がカソード表面とする配置の電極で構成され、１０Ａは給液口、１０Ｂは分岐給液口、１０ａは給液配管、１０ｂは給液配管１０ａから分岐し、給液配管１０ａと並列になるように設置された分岐給液配管、１１は上部排液口、１５は分岐部、ｗ１、ｗ２は電解槽壁（電極面の法線方向の槽壁）である。 FIG. 1 shows a schematic view of an electrolytic cell 1 during electrolytic refining according to this example. 1A is a top view, and FIG. 1B is a cross-sectional view taken along the “a′′ line” in FIG. 1 is an electrolytic cell according to this embodiment, 3 is an anode, 4 is a cathode, 5 is an electrode composed of a cathode and an anode, the right side is a cathode surface, the left side is an electrode arranged as an anode surface, and the right side is an anode surface , 10A is a liquid supply port, 10B is a branch liquid supply port, 10a is a liquid supply pipe, 10b is a branch from the liquid supply pipe 10a, and is parallel to the liquid supply pipe 10a. The reference numeral 11 is an upper drain port, 15 is a branch portion, and w 1 and w 2 are electrolytic cell walls (cell walls in the direction normal to the electrode surface).

図１において、給液部を構成する給液配管１０ａは、電極の表面における法線方向の電解槽壁の一方側ｗ１の槽内側に、電解液の液面より上方から電解槽壁ｗ１に沿って電解液に浸漬、電解槽底部Ｂｏ、若しくはその近傍で、電解槽底部Ｂｏに沿って他方側の電解槽壁ｗ２に向かって敷設されている。さらに、給液配管１０ａが電解槽底部Ｂｏに沿っている途中で（図では電解槽の中央部付近で）、その給液配管１０ａから分岐、好ましくは、給液配管と分岐した給液配管とが同じ高さになるように敷設された分岐給液配管１０ｂを有し、その先端部に給液配管１０ａの開口部である給液口１０Ａと同一方向、若しくは槽底に平行な方向に設けられる分岐給液口１０Ｂ、さらに、給液口１０Ａや分岐給液口１０Ｂは槽底に降り積もってくるスライムによる配管詰まりの防止策を施した上で、電解液液面方向に開口していても良い。 In FIG. 1, the liquid supply pipe 10a constituting the liquid supply unit is located inside the electrolytic cell wall w 1 on the one side w 1 of the surface of the electrode in the direction normal to the electrolytic cell wall w 1 from above the liquid surface of the electrolytic solution. Is soaked in an electrolytic solution along the bottom of the electrolytic bath, and is laid at or near the bottom portion Bo of the electrolytic bath toward the wall w 2 of the electrolytic bath on the other side along the bottom portion Bo of the electrolytic bath. Further, while the liquid supply pipe 10a is along the electrolytic bath bottom portion Bo (in the vicinity of the center of the electrolytic bath in the figure), the liquid supply pipe 10a is branched, and preferably, the liquid supply pipe branched from the liquid supply pipe 10a. Have a branch liquid supply pipe 10b laid so as to have the same height, and are provided at the tip thereof in the same direction as the liquid supply port 10A which is the opening of the liquid supply pipe 10a, or in the direction parallel to the tank bottom. The branched liquid supply port 10B, and further the liquid supply port 10A and the branched liquid supply port 10B are provided with a measure for preventing clogging of the pipe due to slime accumulated on the bottom of the tank, and then opened in the electrolyte liquid surface direction. good.

給液口が一カ所のみであると、電解液の電解槽への供給時の生産性を考慮する場合、その吐出流量を大きくせざるを得ず、そのため、それまでの電解精製により発生（アノードから剥離あるいは電解液中で析出したもの）し、電解槽底に泥状に貯まっていたスライムの巻き上がりを助長する結果となり、電着時にスライムが電気銅中に巻き込まれ、電気銅の純度が低下するリスクがある。 If there is only one liquid supply port, the discharge flow rate must be increased when considering the productivity when supplying the electrolytic solution to the electrolytic cell. The result is that the slime that has accumulated in the mud at the bottom of the electrolytic cell is rolled up, and the slime is caught in the electrolytic copper during electrodeposition, and the purity of electrolytic copper is improved. There is a risk of decline.

そこで、本実施例では電解槽への電解液の供給は、電極表面の法線方向の電解槽壁付近で電解槽底部付近に設けた給液口１０Ａと、その給液口１０Ａを備える給液配管１０ａから分岐し、給液配管１０ａの途中（たとえば分岐１ヶ所の場合は、電解槽中央付近）から並列に分岐させた給液配管１０ｂとその端部の開口部である分岐給液口１０Ｂの２口の給液口、即ち、同一配管から分岐させた給液口を設置する事で、大きな設備改造なく一カ所当たりの給液口の流量を低減できる。 Therefore, in the present embodiment, the electrolytic solution is supplied to the electrolytic cell by supplying the liquid supply port 10A provided near the electrolytic cell bottom near the electrolytic cell wall in the normal direction of the electrode surface and the liquid supply port including the liquid supply port 10A. A liquid supply pipe 10b branched from the pipe 10a and branched in parallel from the middle of the liquid supply pipe 10a (for example, in the case of one branch, near the center of the electrolytic cell) and a branch liquid supply port 10B which is an opening at the end thereof. By installing the two liquid supply ports, that is, the liquid supply ports branched from the same pipe, the flow rate of the liquid supply port per one place can be reduced without major facility modification.

本実施例で設けた２口の給液口は、図１（ａ）で見られるように同一方向への給液を行なうものであるが、その際に電解槽内の液流れが不均一に陥らないように給液流量が適時調整可能なような流量調節機構（例えば、電磁弁などの制御可能なもの）を備えることが望ましい。 The two liquid supply ports provided in this embodiment are for supplying liquid in the same direction as seen in FIG. 1(a), but at that time, the liquid flow in the electrolytic cell becomes uneven. It is desirable to provide a flow rate adjusting mechanism (for example, a controllable one such as a solenoid valve) so that the supply flow rate can be adjusted in a timely manner so as not to fall.

さらに、本実施例における給液部の代表例を図２と図３に示す。図２は給液部Ｐにおける２口の給液口１０Ａと分岐給液口１０Ｂが、異なる方向に電解液を給液する形式のものであり、分岐部１５において、内部に流量弁を設け、給液口１０Ａへの流量と分岐給液口１０Ｂへの流量を各々制御可能にしても良い。
又、図３には、同一方向に給液する形式の給液部Ｐを示している。（ａ）は分岐部１５において分岐給液配管を設置せずに、分岐部１５が分岐給液配管を兼ねて分岐部側方に分岐給液口１０Ｂを備えることで、給液配管１０ａの先端部側方に開口された給液口１０Ａと同一方向への給液を可能としている。 Further, a representative example of the liquid supply unit in this embodiment is shown in FIGS. 2 and 3. FIG. 2 shows a type in which the two liquid supply ports 10A and the branch liquid supply ports 10B in the liquid supply part P supply the electrolytic solution in different directions. In the branch part 15, a flow valve is provided inside. The flow rate to the liquid supply port 10A and the flow rate to the branch liquid supply port 10B may be controllable.
Further, FIG. 3 shows a liquid supply portion P of a type that supplies liquid in the same direction. (A) does not install a branch liquid supply pipe in the branch part 15, but the branch part 15 doubles as a branch liquid supply pipe and is provided with a branch liquid supply port 10B on the side of the branch part. It is possible to supply the liquid in the same direction as the liquid supply port 10A opened on the side of the part.

一方、図３（ｂ）に示す給液部Ｐは、分岐部１５で分岐した分岐給液配管１０ｂが給液配管１０ａと並列になるように設置され、給液口１０Ａと同一方向に給液する分岐給液口１０Ｂを先端に備える形式となっている。 On the other hand, the liquid supply part P shown in FIG. 3B is installed such that the branched liquid supply pipe 10b branched at the branch part 15 is parallel to the liquid supply pipe 10a, and the liquid supply part 10A is supplied in the same direction as the liquid supply port 10A. The branch supply port 10B is provided at the tip.

本実施態様において用いる電解槽及び給液部について、図１で示す給液部Ｐは、単一の給液配管を用いた例を挙げて説明してきたが、電解槽の大きさによっては、２箇所以上の給液部を備えることが可能である。その場合、個々の給液部を流れる電解液の流量を、個々に又は併せて調節、制御して給液する。 Regarding the electrolytic cell and the liquid supply section used in the present embodiment, the liquid supply section P shown in FIG. 1 has been described with reference to an example using a single liquid supply pipe. However, depending on the size of the electrolytic cell, 2 It is possible to provide the liquid supply part in more than one place. In that case, the flow rate of the electrolytic solution flowing through each of the liquid supply units is adjusted or controlled individually or in combination to supply the liquid.

以下、実施例により本実施の形態をさらに説明する。 The present embodiment will be further described below with reference to examples.

長さ５６００ｍｍ×幅１２６０ｍｍ×深さ１５３０ｍｍの図１に示す電解槽１を用い、図３（ｂ）に示す給液部Ｐを、その電解槽１の電解槽壁ｗ１の幅方向中央に電解槽１の上方から槽底Ｂｏ方向に向かって電解槽壁ｗ１の内側に沿って、先端に給液口１０Ａが位置するＬ字型の給液配管１０ａを設置した。その給液配管１０ａの中間部に設けた分岐部１５に分岐給液配管１０ｂを、分岐給液口１０Ｂが給液配管１０ａと並列になるように設置し、給液口一カ所当たりの給液量を小さく、かつ同一流量となるよう設置した。 Using the electrolytic cell 1 shown in FIG. 1 having a length of 5600 mm×a width of 1260 mm×a depth of 1530 mm, the liquid supply part P shown in FIG. 3( b) is electrolyzed at the center of the electrolytic cell wall w 1 of the electrolytic cell 1 in the width direction. An L-shaped liquid supply pipe 10a having a liquid supply port 10A at the tip was installed along the inner side of the electrolytic cell wall w 1 from above the tank 1 toward the tank bottom Bo. The branch liquid supply pipe 10b is installed in the branch portion 15 provided in the middle of the liquid supply pipe 10a so that the branch liquid supply port 10B is in parallel with the liquid supply pipe 10a. The volume was small and the flow rate was the same.

電解槽１に精製アノード５６枚とステンレスカソード５５枚を、交互に表面の電極面が向かい合うように電極を構成して装入した。その電極が装入、設置された電解槽１に、電解液を満たし、さらに電解液を給液しながら通電した。なお、電解液の組成は銅４５〜５０ｇ／Ｌ、硫酸１８０〜１９０ｇ／Ｌ、液温６０〜６５℃とし、給液量は３０Ｌ／分とした。
通電開始７日後に、２カ所の給液口付近（図１（ｂ）の破線丸で示すサンプリング位置Ｘ、Ｍ）の電解槽液面からの高さ５００ｍｍ、９００ｍｍから電解液をサンプリングし、ＳＳ濃度（採取した体積に占める浮遊固形物の質量）を測定した。
図４、図５にその測定結果を示し、各測定点とも３回ずつの測定値の平均を示した。 56 pieces of refined anodes and 55 pieces of stainless steel cathodes were placed in the electrolytic cell 1 with the electrodes arranged so that the surfaces of the electrodes alternately face each other. The electrolytic cell 1 in which the electrode was installed and installed was filled with an electrolytic solution, and then the electrolytic solution was supplied with electricity to supply electricity. The composition of the electrolytic solution was 45 to 50 g/L of copper, 180 to 190 g/L of sulfuric acid, the liquid temperature was 60 to 65° C., and the liquid supply amount was 30 L/min.
Seven days after the start of energization, the electrolytic solution was sampled from the heights of 500 mm and 900 mm above the liquid surface of the electrolytic cell near the two liquid supply ports (sampling positions X and M indicated by the dashed circles in Fig. 1(b)), and SS The concentration (mass of suspended solids in the collected volume) was measured.
The measurement results are shown in FIG. 4 and FIG. 5, and the average of the measurement values of three times at each measurement point is shown.

（比較例）
図１と同じ大きさの電解槽において、給液部が電解槽壁ｗ２の一カ所のみに給液口１０Ａを備えたこと以外は、実施例１と同じ条件で電解を行った。
その結果を図４、図５に示す。 (Comparative example)
In the electrolytic cell having the same size as in FIG. 1, electrolysis was performed under the same conditions as in Example 1 except that the liquid supply section was provided with the liquid supply port 10A only at one location in the electrolytic cell wall w 2 .
The results are shown in FIGS. 4 and 5.

図５の結果から判るように、分岐給液配管１０ｂと分岐給液口１０Ｂを設置した場合は、設置していない比較例と比較して給液口１０Ａ付近の電解槽壁側のＳＳ濃度が大きく低減していることが判る。
一方、図４の結果から判るように、分岐給液口１０Ｂが設置されたサンプリング位置Ｍ（位置は図１（ｂ）参照）付近のＳＳ濃度に大きな変化はなく、分岐配管設置からの悪影響は見られなかった。
以上の結果から、本実施例を用いることで、槽底に積もったスライムを巻き上げずに、電解槽への電解液の供給が可能である。 As can be seen from the results of FIG. 5, when the branch liquid supply pipe 10b and the branch liquid supply port 10B were installed, the SS concentration on the electrolytic cell wall side near the liquid supply port 10A was higher than that in the comparative example in which they were not installed. It can be seen that it is greatly reduced.
On the other hand, as can be seen from the results of FIG. 4, there is no large change in the SS concentration near the sampling position M (the position is shown in FIG. 1B) where the branch liquid supply port 10B is installed, and there is no adverse effect from the installation of the branch pipe. I couldn't see it.
From the above results, by using this example, it is possible to supply the electrolytic solution to the electrolytic cell without winding up the slime accumulated on the cell bottom.

１ 電解槽
２ 電解液
２ａ 電解液液面
３ アノード
４ カソード
５ 電極
１０Ａ 給液口
１０Ｂ 分岐給液口
１０ａ 給液配管
１０ｂ 分岐給液配管
１１ 上部排液口
１５ 分岐部
Ｂｏ 電解槽底部
Ｐ 給液部
ｗ１、ｗ２ 電解槽壁（電極面の法線方向の槽壁） 1 Electrolyzer 2 Electrolyte 2a Electrolyte Liquid Level 3 Anode 4 Cathode 5 Electrode 10A Liquid Supply Port 10B Branch Liquid Supply Port 10a Liquid Supply Pipe 10b Branch Liquid Supply Pipe 11 Upper Discharge Port 15 Branch Port Bo Electrolytic Tank Bottom P Liquid Supply Parts w 1 and w 2 electrolytic cell wall (cell wall in the direction normal to the electrode surface)

Claims (3)

非鉄金属の電解精製用電解槽への電解液の給液方法であって、
前記電解精製用電解槽内に、複数の電極を平行に配置し、
前記電極の表面における法線方向へ敷設された給液配管が、開口部として少なくとも２口の給液口を有することを特徴とする電解精製用電解槽への電解液の給液方法。 A method for supplying an electrolytic solution to an electrolytic cell for electrolytic refining of non-ferrous metal,
In the electrolytic cell for electrolytic refining, a plurality of electrodes are arranged in parallel,
A method for supplying an electrolytic solution to an electrolytic cell for electrolytic refining, characterized in that the solution supply pipe laid in the normal direction on the surface of the electrode has at least two solution supply ports as openings. 前記少なくとも２口の給液口が、前記電極の表面における法線方向にある電解槽壁の一方側から他方の電解槽壁の下部まで電解槽底に沿って敷設された給液配管の先端部に設けられた開口部である給液口と、
前記給液配管の中間部から分岐し、前記給液配管と平行に敷設された給液配管の先端部に設けられた開口部である給液口を含むことを特徴とする請求項１に記載の電解精製用電解槽への電解液の給液方法。 The at least two liquid supply ports are laid along the electrolytic cell bottom from one side of the electrolytic cell wall in the direction normal to the surface of the electrode to the lower part of the other electrolytic cell wall, and the tip of the liquid supply pipe. And a liquid supply port which is an opening provided in
The liquid supply port, which is an opening provided at a front end of the liquid supply pipe, which is branched from an intermediate portion of the liquid supply pipe and laid parallel to the liquid supply pipe, is included. Method of supplying electrolytic solution to the electrolytic cell for electrolytic refining of. 全ての給液口が、前記電解液を同じ方向に給液するように設けられた開口部であることを特徴とする請求項１又は２に記載の電解精製用電解槽への電解液の給液方法。 3. All the liquid supply ports are openings provided so as to supply the electrolytic solution in the same direction, and supply of the electrolytic solution to the electrolytic cell for electrolytic refining according to claim 1 or 2. Liquid method.
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