JP4397961B1 - Silver electrolytic recovery equipment - Google Patents
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Abstract
【課題】銀の電解回収装置において、円筒状回転陰極を繰返し再使用し得るようにするべく、陰極に電着した銀を容易に剥離することができる装置を提供する。
【解決手段】電解層１、制御装置２、陽極４及び円筒状陰極３から構成された銀の電解回収装置において、前記円筒状陰極３は、下縁部全周に絶縁キャップが嵌着され、前記円筒状陰極の外周表面一箇所の縦方向には、複数の帯状絶縁材を、間隙を設けて着脱可能に装着し、前記帯状絶縁材を外すことにより電着した銀を円筒状陰極から容易に剥離できるようにする。
【選択図】図１An apparatus for easily removing silver electrodeposited on a cathode is provided in a silver electrolytic recovery apparatus so that a cylindrical rotating cathode can be reused repeatedly.
In a silver electrolysis recovery device comprising an electrolytic layer, a control device, an anode, and a cylindrical cathode, the cylindrical cathode is fitted with an insulating cap all around the lower edge. In the longitudinal direction at one place on the outer peripheral surface of the cylindrical cathode, a plurality of strip-shaped insulating materials are detachably mounted with gaps, and the electrodeposited silver can be easily removed from the cylindrical cathode by removing the strip-shaped insulating materials. To be able to peel off.
[Selection] Figure 1
Description
本発明は、銀を含有する溶液から銀を電解回収するための装置に係り、特に円筒状陰極表面に電着した銀を陰極から容易に剥離することができるようにした銀の電解回収装置に関するものである。 The present invention relates to an apparatus for electrolytically recovering silver from a solution containing silver, and more particularly to an apparatus for electrolytically recovering silver that can easily peel silver deposited on the surface of a cylindrical cathode from the cathode. Is.
銀めっき液、写真定着液等の銀を含有する廃液から銀を回収する手段として、電解法が広く実施されている。
銀を含有する溶液から銀を電解回収する装置として、例えば、電解槽、この電解槽内に配置された陽極、この陽極を包囲して前記電解槽内に配置された取り外し可能な陰極、および前記陰極および陽極のための、前記電解槽の外側に設けられた電気接続具を備え、前記電解槽は導電性の接触面を有し、前記陰極の変形可能な部分を前記接触面に対して把持して陰極の接続具から陰極への電気的接続を行う把持装置を備えた銀の回収装置が知られている。（例えば、特許文献１参照）
As a means for recovering silver from a waste solution containing silver such as a silver plating solution and a photographic fixing solution, an electrolysis method is widely practiced.
As an apparatus for electrolytically recovering silver from a solution containing silver, for example, an electrolytic cell, an anode disposed in the electrolytic cell, a removable cathode disposed in the electrolytic cell surrounding the anode, and the above Electrical connection provided outside the electrolytic cell for the cathode and the anode, the electrolytic cell having a conductive contact surface, and gripping the deformable part of the cathode with respect to the contact surface Thus, a silver recovery device including a gripping device that performs electrical connection from the cathode connector to the cathode is known. (For example, see Patent Document 1)
また、銀を含有する溶液から銀を電解回収するための装置として、例えば、電解槽；槽内に位置した陽極；槽内に位置した参照電極；槽内に位置した脱着しうる陰極（この陰極は陽極に対向した内面及び参照電極に対向した外面を有する）；陰極の外面での銀の析出を抑制するための手段を含む銀の電解回収装置が知られている。（例えば、特許文献２参照） Further, as an apparatus for electrolytically recovering silver from a solution containing silver, for example, an electrolytic cell; an anode positioned in the cell; a reference electrode positioned in the cell; a detachable cathode positioned in the cell (this cathode) Has an inner surface facing the anode and an outer surface facing the reference electrode); a silver electrowinning device is known that includes means for inhibiting silver deposition on the outer surface of the cathode. (For example, see Patent Document 2)
そしてまた、Ｔｉ製回転陰極を使用して金めっき廃液及び金めっき後の洗浄水から金を回収する装置が開示されている。この装置では、電着金の剥離脱落防止する方法としてＴｉ回転電極の表裏面を弗化水素酸または塩酸或いは硝弗酸で酸化膜を除去するものである。
（例えば、特許文献３参照）
And the apparatus which collect | recovers gold | metal | money from the washing | cleaning water after gold-plating waste liquid and gold | metal plating using the rotating cathode made from Ti is disclosed. In this apparatus, as a method for preventing peeling of the electrodeposited gold, the oxide film is removed with hydrofluoric acid, hydrochloric acid or nitric hydrofluoric acid on the front and back surfaces of the Ti rotating electrode.
(For example, see Patent Document 3)
しかしながら、上記した特許文献１及び特許文献２に開示されているような円筒形状の陰極を使用する電解回収装置においては、陰極材料そのものが薄く、上縁には多数の切込みが設けられているので電解槽への装着、取外等の作業にたいへん手間が掛かった。
また、析出した銀が陰極より剥離する場合があり、それにより陽極と陰極とが短絡し、陽極の消耗が促進され、電解の継続に支障をきたすものであった。
更に、特許文献３の貴金属電解回収装置は、Ｔｉ回転電極へ剥離脱落せずに密着するものと考えられるが、前記のＴｉ回転電極へ電着した貴金属は、電極の表面全体に亘って上端から下端までびっしりと、付着されているのでＴｉ回転電極を再使用するためＴｉ回転電極から貴金属を剥すのにヘラやハンマーを使用しても容易に剥離することができないという問題点があった。
However, in the electrolytic recovery apparatus using the cylindrical cathode as disclosed in Patent Document 1 and Patent Document 2 described above, the cathode material itself is thin and a large number of cuts are provided on the upper edge. It took a lot of work to install and remove the battery from the electrolytic cell.
Further, the precipitated silver may be peeled off from the cathode, whereby the anode and the cathode are short-circuited, the consumption of the anode is promoted, and the continuation of electrolysis is hindered.
Furthermore, the precious metal electrolysis recovery device of Patent Document 3 is considered to adhere to the Ti rotating electrode without peeling off, but the noble metal electrodeposited on the Ti rotating electrode is from the upper end over the entire surface of the electrode. Since the Ti rotating electrode is reused because it is tightly attached to the lower end, there has been a problem that even if a spatula or a hammer is used to peel the noble metal from the Ti rotating electrode, it cannot be easily peeled off.
本発明は、ステンレス、チタン等の円筒状回転陰極を使用した銀の電解回収装置において、円筒状回転陰極を繰返し再使用し得るようにするべく、陰極に電着した銀を容易に剥離することができるように改良した銀の電解回収装置を提供することを目的とする。 In the present invention, in a silver electrolytic recovery apparatus using a cylindrical rotating cathode such as stainless steel or titanium, the electrodeposited silver is easily peeled off so that the cylindrical rotating cathode can be reused repeatedly. It is an object of the present invention to provide a silver electrolytic recovery apparatus improved so as to be capable of achieving the above.
本発明者らは、上記の問題を解決すべく、以下の発明を完成させた。
すなわち、本発明は、
（１）電解層、制御装置、陽極及び円筒状陰極から構成された銀の電解回収装置において、
前記円筒状陰極は、下縁部全周に絶縁キャップが嵌着され、前記円筒状陰極の外周表面一箇所の縦方向には、複数の帯状絶縁材を、間隙を設けて着脱可能に装着し、前記帯状絶縁材を外すことにより電着した銀を円筒状陰極から容易に剥離できるようにしたことを特徴とする銀の電解回収装置、
（２）円筒状陰極の上部がガス抜き孔を有する蓋体であることを特徴とする請求項１記載の銀の電解回収装置、
（３）絶縁キャップ及び帯状絶縁材が合成樹脂又はゴムであることを特徴とする請求項１〜請求項２のいずれかに記載の銀の電解回収装置、
（４）帯状絶縁材は、ネジにより円筒状陰極の外周表面一箇所の縦方向に着脱自在に装着されていることを特徴とする請求項１〜請求項３のいずれかに記載の銀の電解回収装置、
（５）電解槽中の円筒状陰極の外側に陽極を配置したことを特徴とする請求項１〜請求項４のいずれかに記載の銀の電解回収装置、
（６）円筒状陰極表面に電着した銀は、帯状絶縁材のネジを外し、帯状絶縁材を取り除くことにより円筒状に剥離できるように構成したことを特徴とする請求項１〜請求項５いずれかに記載の銀の電解回収装置、
に関するものである。
In order to solve the above problems, the present inventors have completed the following invention.
That is, the present invention
(1) In an electrolytic recovery device for silver composed of an electrolytic layer, a control device, an anode and a cylindrical cathode,
The cylindrical cathode has an insulating cap fitted to the entire periphery of the lower edge portion, and a plurality of strip-shaped insulating materials are detachably mounted in the longitudinal direction at one place on the outer peripheral surface of the cylindrical cathode with a gap. The silver electrolytic recovery apparatus, wherein the electrodeposited silver can be easily peeled off from the cylindrical cathode by removing the strip-shaped insulating material,
(2) The silver electrolytic recovery device according to claim 1, wherein the upper part of the cylindrical cathode is a lid having a gas vent hole,
(3) The silver electrolytic recovery apparatus according to any one of claims 1 to 2, wherein the insulating cap and the strip-shaped insulating material are synthetic resin or rubber.
(4) The silver electrolysis according to any one of claims 1 to 3, wherein the strip-shaped insulating material is detachably mounted in a longitudinal direction on one outer peripheral surface of the cylindrical cathode by a screw. Collection device,
(5) The silver electrolytic recovery apparatus according to any one of claims 1 to 4, wherein an anode is disposed outside the cylindrical cathode in the electrolytic cell.
(6) The silver electrodeposited on the surface of the cylindrical cathode can be peeled off into a cylindrical shape by removing the strip-shaped insulating material and removing the strip-shaped insulating material. The silver electrolytic recovery device according to any one of the above,
It is about.
本発明によれば、特殊加工した円筒状陰極を採用することで銀の電解回収液から円筒状陰極に析出した銀を極めて容易に剥離回収することができる。また、銀を剥離回収した後の円筒状陰極は繰返し再使用することができる。 According to the present invention, by using a specially processed cylindrical cathode, silver deposited on the cylindrical cathode from the silver electrolytic recovery solution can be separated and recovered very easily. Further, the cylindrical cathode after the silver is peeled and recovered can be reused repeatedly.
以下、本発明について図面に従ってさらに詳細に説明する。
図１は本発明に係る銀の電解回収装置の斜視図である。
図１に示すように、電解槽１は、制御装置２が一体となっていてこの制御装置２によって電流制御が行われている。電解槽１の内部中央部には、円筒状陰極３が陰極固定棒１０によって回転するようにネジ１３によって固定されている。この円筒状陰極３は銀の析出が済んだ後、ネジ１３を外すことにより電解槽１から容易に取り外しすることができる。また、円筒状陰極３の外周には、陽極４が相対するように設置されている。
Hereinafter, the present invention will be described in more detail with reference to the drawings.
FIG. 1 is a perspective view of a silver electrolytic recovery apparatus according to the present invention.
As shown in FIG. 1, the electrolytic cell 1 is integrated with a control device 2, and current control is performed by the control device 2. A cylindrical cathode 3 is fixed to the inner central portion of the electrolytic cell 1 by screws 13 so as to be rotated by a cathode fixing rod 10. The cylindrical cathode 3 can be easily removed from the electrolytic cell 1 by removing the screw 13 after the silver is deposited. Further, the anode 4 is installed on the outer periphery of the cylindrical cathode 3 so as to face each other.
本発明においては、円筒状陰極３へ析出した銀を簡単に剥離できるようにすること、および電解中に陰極から剥がれ落ちないよう円筒状陰極３に加工を施してあることが主たる特徴でもある。 The main features of the present invention are that the silver deposited on the cylindrical cathode 3 can be easily peeled off, and that the cylindrical cathode 3 is processed so as not to peel off from the cathode during electrolysis.
すなわち、本発明の銀の電解回収装置における円筒状陰極３は、図２に示すように上面は蓋１１によって覆われている。また、蓋１１には複数のガス抜き孔１２が設けられ、中央中心部には、陰極固定棒１０へネジ１３により固定する開口部が設けてある。
図３に示すように円筒状陰極３の下面には蓋はなく開口されている。そして円筒状陰極３の下縁部全周に亘り絶縁キャップ７が嵌着されている。
That is, the upper surface of the cylindrical cathode 3 in the silver electrolytic recovery apparatus of the present invention is covered with the lid 11 as shown in FIG. The lid 11 is provided with a plurality of vent holes 12, and an opening for fixing the cathode fixing rod 10 to the cathode 10 with a screw 13 is provided at the center.
As shown in FIG. 3, the bottom surface of the cylindrical cathode 3 is opened without a lid. An insulating cap 7 is fitted over the entire circumference of the lower edge of the cylindrical cathode 3.
一方、円筒状陰極３の外周表面５の縦方向一箇所には帯状絶縁材６が複数個間隙８を空けて着脱できるようにネジ９によって止めてある。
帯状絶縁材６を間隙を空けずに連続して装着しておいた場合、析出した銀は、帯状絶縁材６を境にして陰極から剥離し、電解の途中で脱落しまうため間隙８を設けておくことが重要である。
On the other hand, a strip-shaped insulating material 6 is fixed at one longitudinal position of the outer peripheral surface 5 of the cylindrical cathode 3 with screws 9 so that a plurality of gaps 8 can be attached and detached.
When the strip-shaped insulating material 6 is continuously mounted without leaving a gap, the deposited silver peels off from the cathode with the strip-shaped insulating material 6 as a boundary and falls off during the electrolysis, so that a gap 8 is provided. It is important to keep
本発明において、円筒状陰極３を構成する材料としては、例えば、チタン、ステンレス等が挙げられる。また、陽極を構成する材料としては、網状チタンへ白金又は白金合金をめっきしたものが挙げられる。 In the present invention, examples of the material constituting the cylindrical cathode 3 include titanium and stainless steel. Moreover, as a material which comprises an anode, what plated platinum or a platinum alloy to reticulated titanium is mentioned.
本発明において、円筒状陰極３に析出した銀を剥離し易くするため円筒状陰極３に設ける絶縁キャップ７及び帯状絶縁材６を構成する材料としては、例えば、ポリエチレン、ポリプロピレン、ポリカーボネート、ナイロン及びポリエステル等の合成樹脂、天然ゴム、ポリウレタンゴム、二トリルゴム及びシリコンゴム等のゴムが挙げられる。 In the present invention, examples of the material constituting the insulating cap 7 and the strip-shaped insulating material 6 provided on the cylindrical cathode 3 in order to facilitate the peeling of silver deposited on the cylindrical cathode 3 include, for example, polyethylene, polypropylene, polycarbonate, nylon and polyester. And synthetic rubbers such as natural rubber, polyurethane rubber, nitrile rubber and silicone rubber.
次に、本発明に係る銀の電解回収装置による銀を含有する廃液からの銀の回収について説明する。回収装置の対象となる廃液は、主にめっき工場から排出される使用後の銀めっき液或いは電子部品等から銀を溶解剥離した回収液である。
まず、円筒状陰極３の下縁部全周に亘りポリエチレン製絶縁キャップ７を嵌着する。更に円筒状陰極３の外周表面５の縦方向二箇所へ同じくポリエチレン製帯状絶縁材６をネジ９によって固定する。その際、前記帯状絶縁材６は図２に示すようにつなぎ合わせないよう間隙８を設けておく、このように調製した円筒状陰極３は電解槽１の陰極固定棒１０へネジ１３により着装する。
Next, recovery of silver from a waste liquid containing silver by the silver electrolytic recovery apparatus according to the present invention will be described. The waste liquid that is the target of the recovery apparatus is a recovered silver plating liquid or a recovered liquid obtained by dissolving and peeling silver from an electronic component or the like that is mainly discharged from a plating factory.
First, a polyethylene insulating cap 7 is fitted over the entire lower edge of the cylindrical cathode 3. Further, a polyethylene strip-like insulating material 6 is similarly fixed with screws 9 at two longitudinal positions on the outer peripheral surface 5 of the cylindrical cathode 3. At that time, the strip-like insulating material 6 is provided with a gap 8 so as not to be joined as shown in FIG. 2. The cylindrical cathode 3 thus prepared is attached to the cathode fixing rod 10 of the electrolytic cell 1 with screws 13. .
次いで、電解槽１へ銀回収廃液１４を充填し、制御装置の電源を入れ廃液中に含有する銀を電気分解により円筒状陰極３へ析出させた結果、銀は陰極から剥離、離脱することはなかつた。
円筒状陰極３は電解槽１から取り出し帯状絶縁材６のネジ９を外し、帯状絶縁材６を除去することによって析出した電解銀１６は、図４に示すように円筒状陰極３から容易に剥離することができた。
Next, the electrolytic tank 1 is filled with the silver recovery waste liquid 14 and the power of the control device is turned on to deposit silver contained in the waste liquid onto the cylindrical cathode 3 by electrolysis. As a result, the silver is peeled off and separated from the cathode. Nakatatsu.
The cylindrical cathode 3 is taken out from the electrolytic cell 1, the screw 9 of the strip insulating material 6 is removed, and the electrolytic silver 16 deposited by removing the strip insulating material 6 is easily peeled off from the cylindrical cathode 3 as shown in FIG. We were able to.
１ 電解槽
２ 制御装置
３ 円筒状陰極
４ 陽極
５ 外周表面
６ 帯状絶縁材
７ 絶縁キャップ
８ 間隙
９ ネジ
１０ 陰極固定棒
１１ 蓋
１２ ガス抜き孔
１３ ネジ
１４ 下部開口
１５ 銀回収廃液
１６ 電解銀
DESCRIPTION OF SYMBOLS 1 Electrolysis tank 2 Control apparatus 3 Cylindrical cathode 4 Anode 5 Outer peripheral surface 6 Band-shaped insulating material 7 Insulation cap 8 Gap 9 Screw 10 Cathode fixing rod 11 Lid 12 Gas vent 13 Screw 14 Lower opening 15 Silver recovery waste liquid 16 Electrolytic silver
Claims (6)
The silver electrodeposited on the surface of the cylindrical cathode is configured to be peeled into a cylindrical shape by removing the strip-shaped insulating material and removing the strip-shaped insulating material. The silver electrolytic recovery apparatus as described.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008314464A JP4397961B1 (en) | 2008-12-10 | 2008-12-10 | Silver electrolytic recovery equipment |
| MYPI2011002617A MY158210A (en) | 2008-12-10 | 2009-12-09 | Electrolytic recovery device for gold or silver |
| SG2011042603A SG172087A1 (en) | 2008-12-10 | 2009-12-09 | Electrolytic recovery device for gold or silver |
| TW98142085A TWI412628B (en) | 2008-12-10 | 2009-12-09 | Gold or silver electrolytic recovery unit |
| PCT/JP2009/070622 WO2010067828A1 (en) | 2008-12-10 | 2009-12-09 | Electrolytic recovery device for gold or silver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008314464A JP4397961B1 (en) | 2008-12-10 | 2008-12-10 | Silver electrolytic recovery equipment |
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| Publication Number | Publication Date |
|---|---|
| JP4397961B1 true JP4397961B1 (en) | 2010-01-13 |
| JP2010138435A JP2010138435A (en) | 2010-06-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4472021B1 (en) * | 2009-11-24 | 2010-06-02 | 小島化学薬品株式会社 | Gold electrolytic recovery equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5848571B2 (en) * | 2011-10-04 | 2016-01-27 | Ｄｏｗａエコシステム株式会社 | Electrolytic recovery device |
| JP5852916B2 (en) * | 2012-04-03 | 2016-02-03 | アサヒプリテック株式会社 | Precious metal recovery method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4472021B1 (en) * | 2009-11-24 | 2010-06-02 | 小島化学薬品株式会社 | Gold electrolytic recovery equipment |
| JP2011111629A (en) * | 2009-11-24 | 2011-06-09 | Kojima Kagaku Yakuhin Kk | Apparatus for electrolytically collecting gold |
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| JP2010138435A (en) | 2010-06-24 |
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