JPS6142794B2 - - Google Patents
Info
- Publication number
- JPS6142794B2 JPS6142794B2 JP9317483A JP9317483A JPS6142794B2 JP S6142794 B2 JPS6142794 B2 JP S6142794B2 JP 9317483 A JP9317483 A JP 9317483A JP 9317483 A JP9317483 A JP 9317483A JP S6142794 B2 JPS6142794 B2 JP S6142794B2
- Authority
- JP
- Japan
- Prior art keywords
- cathode
- scraper
- silver
- rope
- support rod
- 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
Links
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 238000005868 electrolysis reaction Methods 0.000 claims description 11
- 239000000843 powder Substances 0.000 claims description 8
- 238000005260 corrosion Methods 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 claims description 3
- -1 branches Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 238000000151 deposition Methods 0.000 claims 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 15
- 229910052709 silver Inorganic materials 0.000 description 13
- 239000004332 silver Substances 0.000 description 13
- 238000007790 scraping Methods 0.000 description 7
- 239000003792 electrolyte Substances 0.000 description 6
- 239000002659 electrodeposit Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000004070 electrodeposition Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000005363 electrowinning Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Electrolytic Production Of Metals (AREA)
Description
【発明の詳細な説明】
本発明は、銀電解のように粒状、樹枝状又は粉
状に析出する金属を、連続して電解採取するため
の電解装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electrolytic device for continuous electrowinning of metals deposited in granular, dendritic, or powder form, such as in silver electrolysis.
銀電解は一般に所謂メービアス法と呼ばれる方
法で行なわれている。 Silver electrolysis is generally carried out by a method called the Möbius method.
ところがこの方法はバツチ式であり、１アノー
ドライフ毎に操業を停止してアノードの入替、析
出銀の回収を行なわねばならず、人手を要するた
め、生産能率を高くすることが困難である。この
ため特許第778549号（特公昭49―41241号）発明
のような、円環状の電解槽に円筒形のカソードと
アノードバスケツトを陰膜を介して円環状に配置
した電解装置が案出されている。この特許発明に
よれば円筒形カソードに粒状、樹枝状又は粉状に
電着した金属はカソード面に近接してカソードと
相対的に回転する複数本のスクレーパーにより掻
き落され、各スクレーパーの下部に取付けた掻寄
板によつて取出口に掻寄せられて排出され、一方
アノードバスケツトには粗金属塊が逐次補給さ
れ、アノードスライムは槽下部の漏斗部を伝つて
沈降して別の取出口から排出されるので、連続操
業が可能で生産能率を大幅に向上することができ
る。このような電解装置によつて銀電解を行なつ
た場合、陰極電流密度が低い場合は銀が樹枝状に
電着するので、この電着物を掻落すのは差程困難
でない。ところが生産能率を高めるために陰極電
流密度を高くしていくと、銀電着物は粒状ないし
粉状となり、掻落しが困難になることが判明し
た。樹枝状電着物であればカソード面に近接して
回転するスクレーパーで容易に払い落すことがで
きるが、粒状ないし粉状電着物の場合はスクレー
パーをカソード面に密着させないとうまく掻落す
ことができない。しかしながら円筒状カソードの
真円度の程度、スクレーパーの駆動のブレ等によ
つてスクレーパーとカソード面の密着を均一にす
ることは極めて困難である。このためカソード表
面のある部分はスクレーパーで強くこすられ、あ
る部分は弱くこすられたり離間するようになつて
しまう。 However, this method is a batch method, and the operation must be stopped for each anode life to replace the anode and collect deposited silver, which requires manpower, making it difficult to increase production efficiency. For this reason, an electrolysis device was devised, as disclosed in Patent No. 778549 (Japanese Patent Publication No. 49-41241), in which a cylindrical cathode and an anode basket are arranged in a ring shape in a ring-shaped electrolytic cell with a diaphragm interposed therebetween. There is. According to this patented invention, the metal electrodeposited on the cylindrical cathode in the form of particles, branches, or powder is scraped off by a plurality of scrapers that are close to the cathode surface and rotate relative to the cathode, and the metal is scraped off at the bottom of each scraper. An attached scraping plate collects the slime to the outlet and discharges it, while the anode basket is successively replenished with coarse metal lumps, and the anode slime sinks through the funnel at the bottom of the tank and is discharged from another outlet. Since it is discharged, continuous operation is possible and production efficiency can be greatly improved. When silver electrolysis is carried out using such an electrolytic device, if the cathode current density is low, silver is electrodeposited in a dendritic form, so it is not very difficult to scrape off this electrodeposit. However, it has been found that when the cathode current density is increased in order to increase production efficiency, the silver electrodeposit becomes granular or powdery, making it difficult to scrape off. Dendritic electrodeposit can be easily scraped off with a scraper that rotates close to the cathode surface, but granular or powder electrodeposit cannot be successfully scraped off unless the scraper is brought into close contact with the cathode surface. However, it is extremely difficult to achieve uniform contact between the scraper and the cathode surface due to the degree of roundness of the cylindrical cathode, fluctuations in the drive of the scraper, and the like. For this reason, some parts of the cathode surface are rubbed strongly by the scraper, while other parts are rubbed weakly or become separated.
スクレーパーが密着しないカソード表面は電着
物がある厚さになつてから初めてスクレーパーに
接触するようになるが、銀のように軟かい金属は
硬質の物質でこすると圧延されることからも判る
ように、もはや円滑な掻取りは期待できない。仮
に掻取られたとしても銀箔状になつて槽底に落下
し、掻寄板での移送、その他の個所で閉塞のトラ
ブルの原因となる。 The cathode surface, which the scraper does not come into contact with, comes into contact with the scraper only after the electrodeposit reaches a certain thickness, but as can be seen from the fact that soft metals like silver are rolled when rubbed with a hard substance. , smooth scraping can no longer be expected. Even if it were scraped off, it would turn into silver foil and fall to the bottom of the tank, causing troubles such as clogging when being transported on scraping boards or at other locations.
本発明者等は上記の欠点を解消すべく種々の掻
取方式を検討した結果、円筒状のカソード外面を
電着面とし、この電着面に弾性のロープを密着さ
せて回転せしめると電着物の掻取りが円滑に行な
えることを見出して本発明に到達した。 The present inventors investigated various scraping methods to solve the above-mentioned drawbacks, and found that if the outer surface of the cylindrical cathode is used as the electrodeposition surface and an elastic rope is tightly attached to this electrodeposition surface and rotated, the electrodeposited material can be removed. The present invention was achieved by discovering that scraping can be carried out smoothly.
即ち、本発明の電解装置は、円環状電解槽の内
筒近くに外面を電着面とする円筒状陰極を配置
し、該陰極の外面に近接して該陰極の軸方向に延
長し且つ陰極の一端及び他端より突出して陰極と
相対的に回転する複数本の支持棒を設け、隣り合
う支持棒の一方の一端と他方の他端の間に陰極外
面に密着するように表面平滑な絶縁性、耐蝕性の
弾性ロープを順次張り渡してスクレーパーを形成
したことを特徴とする。 That is, in the electrolysis device of the present invention, a cylindrical cathode whose outer surface is an electrodeposited surface is disposed near the inner cylinder of an annular electrolytic cell, and a cylindrical cathode that extends in the axial direction of the cathode in close proximity to the outer surface of the cathode. A plurality of support rods are provided that protrude from one end and the other end and rotate relative to the cathode, and an insulating material with a smooth surface is provided between one end of one of the adjacent support rods and the other end of the other support rod so as to be in close contact with the outer surface of the cathode. The scraper is characterized by being formed by sequentially stretching a resilient and corrosion-resistant elastic rope.
以下に本発明を図面を用いて詳細に説明する。 The present invention will be explained in detail below using the drawings.
第１図及び第２図は本発明の電解装置の例を示
す図で、第１図は平面図、第２図は第１図におけ
る一部縦断面図である。 1 and 2 are diagrams showing an example of the electrolysis device of the present invention, with FIG. 1 being a plan view and FIG. 2 being a partial vertical sectional view of FIG. 1.
第１図及び第２図において、内面にゴムライニ
ング又は樹脂ライニングした円環状電解槽Ａは外
筒１及び内筒２を有し、内筒２に近接してステン
レス製円筒状陰極３が内筒２と同心円上にブスバ
ー４により吊下げられている。陰極３と外筒１の
中間に陰極室と陽極室を区画する濾布製の隔膜５
が設けられ、外筒１と隔膜５の間の陽極室には外
筒１に沿つてアノードバスケツト６が円環状に配
置されている。陰極３と隔膜５の間には陰極３の
一端及び他端より突出する支持棒７ａ，７ｂ，７
ｃが３本のアーム８によつて陰極３に近接して陰
極３の中心線と平行に吊下げられており、アーム
８は回転軸９に接続され、回転軸９は図示しない
駆動装置と連結されている。隣り合う支持棒７
ａ，７ｂ，７ｃの間にロープ１０が陰極３の外円
筒面に密着するように張り渡され、スクレーパー
とされている。このロープの張り渡し方は第３図
に示す。即ち、前進側の支持棒７ａの一端（電解
槽上面側の端部）と後進側の支持棒７ｂの他端
（電解槽底側の端部）の間にロープ１０を張り渡
してある。同様に支持棒７ｂの一端と図示されな
い支持棒７ｃの下端にロープ１０を、支持棒７ｃ
の一端と支持棒７ａの他端にロープ１０を張り渡
してある。 In FIGS. 1 and 2, an annular electrolytic cell A whose inner surface is lined with rubber or resin has an outer cylinder 1 and an inner cylinder 2, and a stainless steel cylindrical cathode 3 is placed adjacent to the inner cylinder 2. 2 and is suspended by a bus bar 4 on a concentric circle. A diaphragm 5 made of filter cloth that partitions a cathode chamber and an anode chamber between the cathode 3 and the outer cylinder 1
An anode basket 6 is arranged in an annular shape along the outer cylinder 1 in the anode chamber between the outer cylinder 1 and the diaphragm 5. Between the cathode 3 and the diaphragm 5, there are support rods 7a, 7b, 7 protruding from one end and the other end of the cathode 3.
c is suspended by three arms 8 close to the cathode 3 and parallel to the center line of the cathode 3, the arms 8 are connected to a rotating shaft 9, and the rotating shaft 9 is connected to a drive device (not shown). has been done. Adjacent support rods 7
A rope 10 is stretched between a, 7b, and 7c so as to be in close contact with the outer cylindrical surface of the cathode 3, and serves as a scraper. The way this rope is stretched is shown in Figure 3. That is, a rope 10 is stretched between one end of the support rod 7a on the forward side (the end on the top side of the electrolytic cell) and the other end of the support rod 7b on the backward side (the end on the bottom side of the electrolytic cell). Similarly, a rope 10 is connected to one end of the support rod 7b and the lower end of the support rod 7c (not shown).
A rope 10 is stretched between one end of the support rod 7a and the other end of the support rod 7a.
本発明に用いるロープ１０の材質は弾性があ
り、且つ絶縁性、耐蝕性である他、表面が平滑で
ある必要がある。前者の性質は通常プラスチツク
製捻糸で満足できるが、捻糸は金属粉が付着し易
く、しかも陰極３に密着しているため付着した金
属粉に電着が起る。これを防止するには軟質のプ
ラスチツクパイプで被覆した表面平滑なものとす
る必要がある。 The material of the rope 10 used in the present invention must be elastic, insulating, corrosion resistant, and have a smooth surface. The former property is usually satisfied with plastic twisted thread, but metal powder tends to adhere to the twisted thread, and since it is in close contact with the cathode 3, electrodeposition occurs on the attached metal powder. To prevent this, it is necessary to cover the pipe with a soft plastic pipe and have a smooth surface.
陰極室の底部１１は平底で底部１１の一部を電
着物の取出口１２として開口してある。又、各支
持棒７ａ，７ｂ，７ｃの下端には掻寄板１３を取
付けてある。陽極室の下方は円環状に全面開放さ
れており、取出口に向かつて傾斜した底板１４を
有する。 The bottom 11 of the cathode chamber has a flat bottom, and a part of the bottom 11 is opened as an outlet 12 for taking out the electrodeposited material. Further, a scraper plate 13 is attached to the lower end of each support rod 7a, 7b, 7c. The lower part of the anode chamber is entirely open in an annular shape, and has a bottom plate 14 that slopes toward the outlet.
アノードバスケツト６に粗銀１５をボール状又
は板平片にして装入し、電解槽に電解液を満た
し、アノードバスケツト６と陰極３との間に電流
を流し、回転軸９を回転させながら電解を行なう
と、陰極３の外面に析出した銀はロープ１０によ
つて陰極から掻き落され、底部１１に落下する。
この落下した銀粉は掻寄板１３によつて取出口１
２に運ばれ、取出口１２から更に落下せしめ、別
途回収される。一方隔膜５で区画されているアノ
ードバスケツト６内に生ずるスライムは隔膜５に
よつて陰極室に入ることなくアノードバスケツト
６の目から下方に落下し、傾斜した底板１４に沿
つて降下し、取出口から排出される。 Coarse silver 15 is charged into an anode basket 6 in the form of a ball or a flat plate, the electrolyte is filled with an electrolytic solution, and a current is passed between the anode basket 6 and the cathode 3 to perform electrolysis while rotating the rotating shaft 9. When this is carried out, the silver deposited on the outer surface of the cathode 3 is scraped off from the cathode by the rope 10 and falls to the bottom 11.
This fallen silver powder is removed from the extraction port 1 by the scraping plate 13.
2, further fall from the outlet 12, and are collected separately. On the other hand, the slime generated in the anode basket 6 divided by the diaphragm 5 does not enter the cathode chamber due to the diaphragm 5, but falls downward from the openings of the anode basket 6, descends along the slanted bottom plate 14, and reaches the outlet. is discharged from.
電解液は電解により不純物濃度が上昇するの
で、連続的に一定量ずつ排液口１６から抜き出
し、浄液した後給液口１７から電解槽に繰り返
す。浄液した電解液は陰極室に繰り返し、陽極室
から抜き取るのがよい。なお析出銀の回収、アノ
ードスライムの回収に際しても電解液が一部抜き
出されるが、この電解液も一緒に浄液すればよ
い。 Since the impurity concentration of the electrolyte increases due to electrolysis, a certain amount of the electrolyte is continuously drawn out from the drain port 16, purified, and then transferred to the electrolytic cell via the liquid supply port 17. It is recommended that the purified electrolyte be repeatedly poured into the cathode chamber and then drawn out from the anode chamber. Note that a portion of the electrolyte is also extracted during recovery of deposited silver and anode slime, but this electrolyte may also be purified together.
上記の例は陰極３を固定し、支持棒７ａ，７
ｂ，７ｃが回転するようにしてあるが、陰極３が
内筒２の同心円上を回転するようにし、支持棒７
ａ，７ｂ，７ｃが停止していても良い。 In the above example, the cathode 3 is fixed and the support rods 7a, 7
b, 7c are configured to rotate, but the cathode 3 is configured to rotate on a concentric circle of the inner cylinder 2, and the support rod 7 is configured to rotate.
a, 7b, and 7c may be stopped.
本発明の装置によれば、陰極３の真円度が多少
悪くても又、支持棒７ａ，７ｂ，７ｃの回転ブレ
があつてもロープ１０と陰極３の密着状態が適度
に保たれ、電着金属の掻き残しがない。そのため
金属がフレーク状で掻落されることがなく、閉塞
等のトラブルが解消されて長期間の連続運転が可
能となり、生産能率を大いに向上することができ
た。又、本発明によればアノード、カソード間隔
を狭くすることができるので槽電圧を低くするこ
とができ、電力原単位を低減できる効果もある。 According to the device of the present invention, even if the circularity of the cathode 3 is somewhat poor, or even if there is rotational wobbling of the support rods 7a, 7b, 7c, the close contact between the rope 10 and the cathode 3 is maintained appropriately, and the electric current is There is no leftover deposited metal. As a result, the metal is not scraped off in the form of flakes, and problems such as blockage are eliminated, allowing continuous operation for a long period of time and greatly improving production efficiency. Further, according to the present invention, since the distance between the anode and the cathode can be narrowed, the cell voltage can be lowered, and the electric power consumption rate can be reduced.
尚、上記説明は銀電解について行なつたが、本
発明装置はこれに限定されるものでなく、粒状、
樹枝状又は粉状に析出する金属であれば全て適用
し得る。 Although the above explanation has been made regarding silver electrolysis, the device of the present invention is not limited to this, and can be used for silver electrolysis.
Any metal that precipitates in dendritic or powder form can be applied.
図は本発明電解槽の一実施例を示したもので、
第１図は平面図、第２図は第１図の一部縦断面
図、第３図は陰極とその外周面に接するよう張設
したロープとの関係を示した第１図の一部側面図
である。
Ａ…円環状電解槽、１…外筒、２…内筒、３…
陰極、４…ブスバー、５…隔膜、６…アノードバ
スケツト、７ａ，７ｂ，７ｃ…支持棒、８…アー
ム、９…回転軸、１０…ロープ、１１…底部、１
２…取出口、１３…掻寄板、１４…底板、１５…
粗銀、１６…排液口、１７…給液口。
The figure shows an embodiment of the electrolytic cell of the present invention.
Fig. 1 is a plan view, Fig. 2 is a partial vertical sectional view of Fig. 1, and Fig. 3 is a partial side view of Fig. 1 showing the relationship between the cathode and a rope stretched in contact with its outer peripheral surface. It is a diagram. A... Annular electrolytic cell, 1... Outer cylinder, 2... Inner cylinder, 3...
Cathode, 4... Bus bar, 5... Diaphragm, 6... Anode basket, 7a, 7b, 7c... Support rod, 8... Arm, 9... Rotating shaft, 10... Rope, 11... Bottom, 1
2... Outlet port, 13... Scraping plate, 14... Bottom plate, 15...
Crude silver, 16...liquid drain port, 17...liquid supply port.
Claims (1)
陰極の外面に金属を粒状、樹枝状又は粉状に析出
せしめる連続電解装置において、前記陰極に近接
して陰極の軸方向に延長し陰極一端及び他端より
突出し、陰極と相対的に回転する複数本の支持棒
を設け、隣り合う支持棒の一方の一端と他方の他
端の間に陰極外面に密着するように表面平滑な絶
縁性、耐蝕性の弾性ロープを張り渡してスクレー
パーを形成したことを特徴とする粒状、樹枝状又
は粉状に析出する金属の連続電解装置。1. In a continuous electrolysis device in which metal is deposited in the form of particles, branches, or powder on the outer surface of a cylindrical cathode placed near the inner cylinder of an annular electrolytic cell, a cathode extending in the axial direction of the cathode close to said cathode is used. A plurality of support rods are provided that protrude from one end and the other end and rotate relative to the cathode, and a smooth insulating surface is provided between one end of the adjacent support rod and the other end of the other so as to be in close contact with the outer surface of the cathode. A continuous electrolytic device for depositing metal in granular, dendritic or powder form, characterized in that a corrosion-resistant elastic rope is stretched to form a scraper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58093174A JPS602688A (en) | 1983-05-25 | 1983-05-25 | Continuous electrolyzing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58093174A JPS602688A (en) | 1983-05-25 | 1983-05-25 | Continuous electrolyzing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS602688A JPS602688A (en) | 1985-01-08 |
| JPS6142794B2 true JPS6142794B2 (en) | 1986-09-24 |
Family
ID=14075202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58093174A Granted JPS602688A (en) | 1983-05-25 | 1983-05-25 | Continuous electrolyzing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS602688A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01109187U (en) * | 1988-01-14 | 1989-07-24 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2478130B1 (en) * | 2009-09-16 | 2015-04-08 | Davey Products PTY Ltd | A salt water chlorinator |
| WO2017191605A1 (en) * | 2016-05-05 | 2017-11-09 | University Of Pretoria | Production of metals |
-
1983
- 1983-05-25 JP JP58093174A patent/JPS602688A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01109187U (en) * | 1988-01-14 | 1989-07-24 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS602688A (en) | 1985-01-08 |
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