CN103215615B - A kind of recovery method of noble metal - Google Patents
A kind of recovery method of noble metal Download PDFInfo
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- CN103215615B CN103215615B CN201310122829.4A CN201310122829A CN103215615B CN 103215615 B CN103215615 B CN 103215615B CN 201310122829 A CN201310122829 A CN 201310122829A CN 103215615 B CN103215615 B CN 103215615B
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- waste water
- negative pole
- mesh grid
- electroplax
- pole electroplax
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Abstract
The invention discloses the recovery method of a kind of noble metal, comprise the following steps: the first step, the waterwater entrance of collection box is connected with the electroplating wastewater outlet pipe of production line, after the water of storage tank fills, start on and off switch；Second step, magnetic drive pump start transport wastewater in electrolyte tank；3rd step, flow in electrolyzer through the waste water of multilamellar backflow；Negative pole electroplax in 4th step, the 3rd step mesh grid absorption metal ion number can judge according to the numerical value of ammeter；5th step, the mesh grid of the full metal ion of absorption are taken out from electrolyzer, collect；6th step, through electrolysis after waste water discharge, the waste water of discharge is used for precious metal electroplating water, recycles.The recovery method of noble metal of the present invention is applicable to the electroplating wastewater such as gold plating waste water, silver-plated waste water, and operational approach is simple, and the noble metal response rate is high.
Description
Technical field
The present invention relates to noble metal and recycle field, particularly to the recovery method of a kind of noble metal.
Background technology
At present, electroplating industry quickly grows, particularly precious metal electroplating industry, (as gold-plated or silver-plated etc.), a lot of electronic products all need could use after gold-plated or silver-plated, but need substantial amounts of water to be rinsed cooling in electroplating process, a small amount of noble metal can be taken away by current during cooling rinsing, cause containing the harmful substance of generation when noble metal and plating in waste water, as entered in river, can severe contamination water quality of river.The harmful substance produced when existing electroplating wastewater processing is simply by plating neutralizes, but noble metal can not recycle.
Summary of the invention
It is an object of the invention to the drawbacks described above for prior art, it is provided that a kind of simple to operate, recovery method of noble metal that the noble metal response rate is high.
For solving the drawbacks described above of prior art, the technical scheme that the invention solves the problems that is: the recovery method of a kind of noble metal, comprises the following steps:
The first step, the waterwater entrance of collection box is connected with the electroplating wastewater outlet pipe of production line, after the water of storage tank fills, starts on and off switch；
Second step, magnetic drive pump start transport wastewater in electrolyte tank, make the waste water of conveying slowly be refluxed rising by the bottom of electrolyte tank by pipeline；
3rd step, flow in electrolyzer through the waste water of multilamellar backflow, owing to the negative pole electroplax in electrolyzer is between two positive pole electroplaxs, positive pole electroplax does not dissolves cation, plays the effect of repulsion, and negative pole electroplax is prone to dissolve and Liquidity limit, make adsorption of metal ions in the mesh grid of negative pole electroplax；
4th step, numerical value according to ammeter carry out judging the metal ion of the mesh grid absorption of negative pole electroplax number；
5th step, the mesh grid of the full metal ion of absorption are taken out from electrolyzer, collect；
6th step, through electrolysis after waste water discharge, the waste water of discharge is used for precious metal electroplating water, recycles.
A kind of improvement as the recovery method of noble metal of the present invention, when the numerical value of described ammeter is the biggest, the metal ion of the mesh grid absorption of negative pole electroplax is the most, and when the numerical value of ammeter reaches the maximum of setting value, then the metal ion of the mesh grid absorption of negative pole electroplax has adsorbed full.
As a kind of improvement of the recovery method of noble metal of the present invention, described positive pole electroplax is connected with electrolysis power positive pole, and described negative pole electroplax is connected with electrolysis power negative pole.The electric current of electrolysis power output is identical with the polarity of precious metal ion, increases the rectification effect of output electric current.
As a kind of improvement of the recovery method of noble metal of the present invention, the mesh grid of described negative pole electroplax is rose copper component.The mesh grid using rose copper to be woven into, has the absorbability that religion is strong to positive pole metal ion, it is easy to cathode metal ion is electrolysed.
As a kind of improvement of the recovery method of noble metal of the present invention, described electroplating wastewater is gold plating waste water or silver-plated waste water.
As a kind of improvement of the recovery method of noble metal of the present invention, the electrolysis power voltage of described gold plating waste water selects in following scope: 1V-5V.Depending on the value of electrolysis power voltage is according to the volume of electrolyte tank, the volume of electrolyte tank is the biggest, and the value of electrolysis power voltage is the biggest.
As a kind of improvement of the recovery method of noble metal of the present invention, the electrolysis power voltage of described silver-plated waste water selects in following scope: 1V-10V.Depending on the value of electrolysis power voltage is according to the volume of electrolyte tank, the volume of electrolyte tank is the biggest, and the value of electrolysis power voltage is the biggest.
The invention have the advantage that the recovery method of noble metal of the present invention is applicable to the electroplating wastewater such as gold plating waste water, silver-plated waste water, operational approach is simple, the noble metal response rate is high, the Purity of Noble Metals reclaimed is high, electroplating wastewater processing is effective, can be electrolysed by the potassium cyanide in electroplating wastewater, greatly reduce the electroplating wastewater pollution to environment；And the electroplating wastewater recycling after processing can be reduced the discharge of waste water, can economize on resources again.
Accompanying drawing explanation
Fig. 1 is workflow diagram of the present invention.
Detailed description of the invention
The invention will be further described the most with reference to the accompanying drawings.
As it is shown in figure 1, the recovery method of a kind of noble metal, comprise the following steps:
The first step, the waterwater entrance of collection box is connected with the electroplating wastewater outlet pipe of production line, after the water of storage tank fills, starts on and off switch；
Second step, magnetic drive pump start transport wastewater in electrolyte tank, make the waste water of conveying slowly be refluxed rising by the bottom of electrolyte tank by pipeline；
3rd step, flow in electrolyzer through the waste water of multilamellar backflow, owing to the negative pole electroplax in electrolyzer is between two positive pole electroplaxs, positive pole electroplax does not dissolves cation, plays the effect of repulsion, and negative pole electroplax is prone to dissolve and Liquidity limit, make adsorption of metal ions in the mesh grid of negative pole electroplax；
4th step, numerical value according to ammeter carry out judging the metal ion of the mesh grid absorption of negative pole electroplax number；
5th step, the mesh grid of the full metal ion of absorption are taken out from electrolyzer, collect；
6th step, through electrolysis after waste water discharge, the waste water of discharge is used for precious metal electroplating water, recycles.
Wherein, when the numerical value of ammeter is the biggest, the metal ion of the mesh grid absorption of negative pole electroplax is the most, and when the numerical value of ammeter reaches the maximum of setting value, then the metal ion of the mesh grid absorption of negative pole electroplax has adsorbed full.
Positive pole electroplax is connected with electrolysis power positive pole, and described negative pole electroplax is connected with electrolysis power negative pole.The electric current of electrolysis power output is identical with the polarity of precious metal ion, increases the rectification effect of output electric current.
The mesh grid of negative pole electroplax is rose copper component.The mesh grid using rose copper to be woven into, has the absorbability that religion is strong to positive pole metal ion, it is easy to cathode metal ion is electrolysed.
Electroplating wastewater is gold plating waste water or silver-plated waste water.
The electrolysis power voltage of gold plating waste water selects in following scope: 1V-5V.Depending on the value of electrolysis power voltage is according to the volume of electrolyte tank, the volume of electrolyte tank is the biggest, and the value of electrolysis power voltage is the biggest.
The electrolysis power voltage of silver-plated waste water selects in following scope: 1V-10V.Depending on the value of electrolysis power voltage is according to the volume of electrolyte tank, the volume of electrolyte tank is the biggest, and the value of electrolysis power voltage is the biggest.
Embodiment one: the recovery method of a kind of noble metal, comprise the following steps:
The first step, the waterwater entrance of collection box is connected with the gold plating waste water outlet pipe of production line, after the water of storage tank fills, starts on and off switch；
Second step, magnetic drive pump start transport wastewater in electrolyte tank, make the waste water of conveying slowly be refluxed rising by the bottom of electrolyte tank by pipeline；
3rd step, flow in electrolyzer through the waste water of multilamellar backflow, owing to the negative pole electroplax in electrolyzer is between two positive pole electroplaxs, positive pole electroplax does not dissolves cation, plays the effect of repulsion, and negative pole electroplax is prone to dissolve and Liquidity limit, make adsorption of metal ions in the mesh grid of negative pole electroplax；
4th step, numerical value according to ammeter carry out judging the metal ion of the mesh grid absorption of negative pole electroplax number；
5th step, the mesh grid of the full metal ion of absorption are taken out from electrolyzer, collect；
6th step, through electrolysis after waste water discharge, the waste water of discharge is used for precious metal electroplating water, recycles.
Wherein, when the numerical value of ammeter is the biggest, the metal ion of the mesh grid absorption of negative pole electroplax is the most, and when the numerical value of ammeter reaches the maximum of setting value, then the metal ion of the mesh grid absorption of negative pole electroplax has adsorbed full.
Positive pole electroplax is connected with electrolysis power positive pole, and described negative pole electroplax is connected with electrolysis power negative pole.The electric current of electrolysis power output is identical with the polarity of precious metal ion, increases the rectification effect of output electric current.
The mesh grid of negative pole electroplax is rose copper component.The mesh grid using rose copper to be woven into, has the absorbability that religion is strong to positive pole metal ion, it is easy to cathode metal ion is electrolysed.
The electrolysis power voltage of gold plating waste water selects in following scope: 1V-5V.Depending on the value of electrolysis power voltage is according to the volume of electrolyte tank, the volume of electrolyte tank is the biggest, and the value of electrolysis power voltage is the biggest.
Embodiment two: the recovery method of a kind of noble metal, comprise the following steps:
The first step, the waterwater entrance of collection box is connected with the silver-plated waste water outlet pipe of production line, after the water of storage tank fills, starts on and off switch；
Second step, magnetic drive pump start transport wastewater in electrolyte tank, make the waste water of conveying slowly be refluxed rising by the bottom of electrolyte tank by pipeline；
3rd step, flow in electrolyzer through the waste water of multilamellar backflow, owing to the negative pole electroplax in electrolyzer is between two positive pole electroplaxs, positive pole electroplax does not dissolves cation, plays the effect of repulsion, and negative pole electroplax is prone to dissolve and Liquidity limit, make adsorption of metal ions in the mesh grid of negative pole electroplax；
4th step, numerical value according to ammeter carry out judging the metal ion of the mesh grid absorption of negative pole electroplax number；
5th step, the mesh grid of the full metal ion of absorption are taken out from electrolyzer, collect；
6th step, through electrolysis after waste water discharge, the waste water of discharge is used for precious metal electroplating water, recycles.
Wherein, when the numerical value of ammeter is the biggest, the metal ion of the mesh grid absorption of negative pole electroplax is the most, and when the numerical value of ammeter reaches the maximum of setting value, then the metal ion of the mesh grid absorption of negative pole electroplax has adsorbed full.
Positive pole electroplax is connected with electrolysis power positive pole, and described negative pole electroplax is connected with electrolysis power negative pole.The electric current of electrolysis power output is identical with the polarity of precious metal ion, increases the rectification effect of output electric current.
The mesh grid of negative pole electroplax is rose copper component.The mesh grid using rose copper to be woven into, has the absorbability that religion is strong to positive pole metal ion, it is easy to cathode metal ion is electrolysed.
The electrolysis power voltage of silver-plated waste water selects in following scope: 1V-10V.Depending on the value of electrolysis power voltage is according to the volume of electrolyte tank, the volume of electrolyte tank is the biggest, and the value of electrolysis power voltage is the biggest.
Noble metal collection box control method of the present invention is applicable to the electroplating wastewater such as gold plating waste water, silver-plated waste water, operational approach is simple, the noble metal response rate is high, the Purity of Noble Metals reclaimed is high, electroplating wastewater processing is effective, can be electrolysed by the potassium cyanide in electroplating wastewater, greatly reduce the electroplating wastewater pollution to environment；And the electroplating wastewater recycling after processing can be reduced the discharge of waste water, can economize on resources again.
It should be noted that the prompting of book and teaching according to the above description, above-mentioned embodiment can also be changed and revise by those skilled in the art in the invention.Therefore, the invention is not limited in detailed description of the invention disclosed and described above, should also be as some equivalent modifications of the present invention and change falling in the scope of the claims of the present invention.Although additionally, employ some specific terms in this specification, but these terms are merely for convenience of description, the present invention is not constituted any restriction.
Claims (3)
1. the recovery method of a noble metal, it is characterised in that comprise the following steps:
The first step, the waterwater entrance of collection box is connected with the electroplating wastewater outlet pipe of production line, after the water of storage tank fills, starts on and off switch；Described electroplating wastewater is gold plating waste water or silver-plated waste water；
Second step, magnetic drive pump start transport wastewater in electrolyte tank, make the waste water of conveying slowly be refluxed rising by the bottom of electrolyte tank by pipeline；
3rd step, flow in electrolyzer through the waste water of multilamellar backflow, owing to the negative pole electroplax in electrolyzer is between two positive pole electroplaxs, positive pole electroplax does not dissolves cation, plays the effect of repulsion, and negative pole electroplax is prone to dissolve and Liquidity limit, make adsorption of metal ions in the mesh grid of negative pole electroplax；Described positive pole electroplax is connected with electrolysis power positive pole, and described negative pole electroplax is connected with electrolysis power negative pole；The mesh grid of described negative pole electroplax is rose copper component；
4th step, numerical value according to ammeter carry out judging the metal ion of the mesh grid absorption of negative pole electroplax number；When the numerical value of described ammeter is the biggest, the metal ion of the mesh grid absorption of negative pole electroplax is the most, and when the numerical value of ammeter reaches the maximum of setting value, then the metal ion of the mesh grid absorption of negative pole electroplax has adsorbed full；
5th step, the mesh grid of the full metal ion of absorption are taken out from electrolyzer, collect；
6th step, through electrolysis after waste water discharge, the waste water of discharge is used for precious metal electroplating water, recycles.
The recovery method of noble metal the most according to claim 1, it is characterised in that the electrolysis power voltage of described gold plating waste water selects in following scope: 1V-5V.
The recovery method of noble metal the most according to claim 1, it is characterised in that the electrolysis power voltage of described silver-plated waste water selects in following scope: 1V-10V.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310122829.4A CN103215615B (en) | 2013-04-10 | 2013-04-10 | A kind of recovery method of noble metal |
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| CN201310122829.4A CN103215615B (en) | 2013-04-10 | 2013-04-10 | A kind of recovery method of noble metal |
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| CN103215615A CN103215615A (en) | 2013-07-24 |
| CN103215615B true CN103215615B (en) | 2016-08-03 |
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Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5937353B2 (en) * | 1975-04-18 | 1984-09-08 | カブシキガイシヤ サンセイキセイサクシヨ | Electrolytic silver recovery equipment |
| US5238543A (en) * | 1992-05-08 | 1993-08-24 | Industrial Technology Research Institute | Recovery of silver from photographic film and photographic development waste solution |
| CN1165872A (en) * | 1996-05-17 | 1997-11-26 | 刘武青 | Magnetic plating appts. |
| FR2761085B1 (en) * | 1997-03-24 | 1999-04-16 | Commissariat Energie Atomique | ELECTROLYTIC PROCESS FOR RECOVERING AND RECYCLING MONEY FROM A NITRIC SOLUTION |
| CN2361643Y (en) * | 1999-02-02 | 2000-02-02 | 周汉兴 | Device for fluidized eletrolytic recovery of gold |
| AU2002951283A0 (en) * | 2002-09-09 | 2002-09-19 | Occtech Engineering Pty Ltd | Process and apparatus for recovery of cynanide and metals |
| KR20080108886A (en) * | 2007-06-11 | 2008-12-16 | 아사히 프리텍 가부시키가이샤 | Metal recovery equipment |
| US8529737B2 (en) * | 2008-03-25 | 2013-09-10 | Tanah Process Ltd. | Portable device for regulating hardness of drinking water |
| CN201962389U (en) * | 2011-02-28 | 2011-09-07 | 郑传勇 | Heavy metal recovery and electrolysis device |
| CN102808200A (en) * | 2011-05-30 | 2012-12-05 | 苏州市鼎尚海珍品有限公司 | Electrolysis recovery apparatus |
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Owner name: DONGGUAN HUASHENG ELECTROPLATE MECHANICAL EQUIPMEN Free format text: FORMER OWNER: ZHANG DENGFENG Effective date: 20140522 |
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Effective date of registration: 20140522 Address after: 523000 Guangdong city of Dongguan Province Hong Mei Zhen Hong Road No. 1 Applicant after: Dongguan HuaSheng Electroplating Machinery Co., Ltd. Address before: 523000 Guangdong city of Dongguan Province Hong Mei Zhen Hong Road No. 1 Applicant before: Zhang Dengfeng |
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