CN104263940B - The de-golden clothes of a kind of gold for reclaiming in waste and old circuit board are put - Google Patents
The de-golden clothes of a kind of gold for reclaiming in waste and old circuit board are put Download PDFInfo
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- CN104263940B CN104263940B CN201410454693.1A CN201410454693A CN104263940B CN 104263940 B CN104263940 B CN 104263940B CN 201410454693 A CN201410454693 A CN 201410454693A CN 104263940 B CN104263940 B CN 104263940B
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The de-golden clothes that the invention discloses a kind of gold for reclaiming in waste and old circuit board are put, including support and rack-mount de-gold reaction device and filtrate treatment trough, liquid outlet is set bottom described de-gold reaction device, this liquid outlet connects a native gold filter, described native gold filter is positioned at filtrate treatment trough, solution and solids after de-gold reaction enter in native gold filter and filter, and the bottom of described filtrate treatment trough sets waste liquid outlet, sets discharging opening bottom it.These de-golden clothes put simple in construction, prepare raw material common and cheap, easy to operate, pollution-free, suitable for scale production.
Description
Technical field
The present invention relates to a kind of circuit board recycling and processing device, the de-golden clothes particularly relating to a kind of gold for reclaiming in waste and old circuit board are put.
Background technology
Printed circuit board (PCB) is one of vitals of electronics industry, mainly provides to electronic devices and components and supports and interconnection function, from computer, television set, mobile phone to electronic toy etc., with the presence of circuit board in almost all of electronic product.Along with the development that electron trade is the swiftest and the most violent, electron wastes just with annual 18% speed increment, become the most fastest-rising rubbish.
In waste and old circuit board, the content of gold is significantly larger than in raw ore the content of gold, data show, the 1t circuit board that gives up can extract gold from about 80g, and reclaims gold from waste and old circuit board than the low cost of Extracting Gold from raw ore more much, also can save mineral raw material, reduce the environmental pollution in smelting process.Therefore, from waste and old circuit board, reclaim gold can bring certain economy, society and environmental benefit, there is the important meaning of sustainable development.
Existing circuit board reclaims the method that technique predominantly organic tool process, pyrometallurgy, hydrometallurgy or several technology of metal combine.Wherein, mechanical treatment is only capable of realizing metal and nonmetallic substantial separation, pyrometallurgy is directly to put into waste and old circuit board in smelting furnace to burn, generation is comprehended containing two English, furan and the poison gas of polychlorinated biphenyl material by this place, environment is caused serious pollution, and the response rate of valuable metal is low, it is the superseded technique prohibited of country.The main thinking of hydrometallurgy is to be pulverized by circuit board, separates metal and nonmetal, with oxidant, metal oxygen is melted into ion and enters solution, then solution is taked certain way, separated by various metals.
At present, the equipment reclaiming gold accordingly is caused the most need not because of the mechanism difference of hydrometallurgical recovery gold.
Chinese utility model patent ZL201320148880.8 provides a kind of golden retracting device for gold coated article, it it is the reclaimer of the gold of the principle of the application molten gold of gold coated article wet method, equipped with gold dissolving liquid body in desolvation groove, by the perforated cylinder that is arranged in desolvation groove equipped with gold coated article, during cylinder rotates, complete the molten gold of gold coated article, more molten gold solution is carried out reclaiming metals gold.Chinese utility model patent ZL201220427094.7 provides one to reclaim golden clothes and puts, and uses multi-stage absorption to reclaim Aurum metallicum the outer row's raffinate containing gold.Chinese utility model patent ZL01201749.3 provides device for fluidized eletrolytic recovery of gold, the waste liquid that this device is relatively low to the washings after gold-plated and other gold content, reclaims gold therein in the way of electrolysis.
Summary of the invention
The purpose of the present invention aims to provide a kind of simple in construction, and the de-golden clothes being used for reclaiming the gold in waste and old circuit board of low cost of manufacture are put.
It is an object of the invention to be achieved through the following technical solutions: the de-golden clothes of a kind of gold for reclaiming in waste and old circuit board are put, including support and rack-mount de-gold reaction device and filtrate treatment trough, liquid outlet is set bottom described de-gold reaction device, this liquid outlet connects a native gold filter, described native gold filter is positioned at filtrate treatment trough, solution and solids after de-gold reaction enter in native gold filter and filter, the bottom of described filtrate treatment trough sets waste liquid outlet, sets discharging opening bottom it.
Described de-gold reaction device is a cylinder, its two ends set rotating shaft, top sets feed inlet and outlet to be opened/closed, bottom sets liquid outlet, setting valve at liquid outlet, and liquid outlet removably connects with native gold filter, described de-gold reaction device is by the rack-mount bearing of the rotating shaft at two ends, rotating shaft is connected with the clutch end driving motor, is driven de-gold reaction device to rotate by driving motor.When carrying out de-gold reaction, close feed inlet and outlet and the liquid outlet of de-gold reaction device, drive motor to drive de-gold reaction device to rotate, until reaction terminates, then the liquid outlet of de-gold reaction device is gone to bottom, connect liquid outlet and the feed end of native gold filter, opening valve, de-gold solution, native gold and various gadget flow in native gold filter and filter, during discharging, unload native gold cartridge filter, the discharging opening of de-gold reaction device is rotated to bottom and carries out discharging.
nullDescribed native gold filter includes pipeline and cartridge filter，One end mouth of pipe of pipeline is connected with the charging aperture at the top of cartridge filter，The mouth of pipe of the other end is then as the inlet for being connected with de-gold reaction device liquid outlet，Described cartridge filter includes gadget recovery cylinder and native gold recovery cylinder，，Gadget recovery cylinder is positioned at the top of native gold recovery cylinder，The opening at native gold recovery cylinder top removably connects with the bottom of gadget recovery cylinder，The base plate of described gadget recovery cylinder is covered with the filter opening that can pass through solution and native gold but gadget can be stoped to pass through，The bottom of described native gold recovery cylinder is the filter screen merely by solution，The material flowed out from de-gold reaction device is introduced into gadget recovery cylinder，Gadget is stayed in gadget recovery cylinder，Solution and native gold are in filter opening stream enters native gold recovery cylinder，Native gold is stopped by filter screen to be stayed in native gold recovery cylinder，Solution and the solids less than native gold particle diameter are entered in filtrate treatment trough by filter screen and carry out standing sedimentation process.
Described filter screen can be nylon wire or the filter screen being made up of anticorrosive wear-resistant material.The mesh number of filter screen requires to stop native gold to flow out the outflow the most not affecting solution.In the present invention, the mesh number of described filter screen is 500 mesh.
The filter opening of described gadget recovery cylinder base plate is for being obliquely installed, and its gradient is 30 ~ 60 °, aperture 1mm ~ 1.8mm.
The bottom of described filtrate treatment trough is V-Bottom, discharging opening is set at its minimum point, solids falls in this V-Bottom, it is easy to discharge, the waste liquid outlet of described filtrate treatment trough is located on the cell wall of V-Bottom top edge, setting Support joint on the outer wall on filtrate treatment trough top, Support joint is fixed on support；Set reagent inlet on the sidewall on described filtrate treatment trough top, be used for adding the reagent such as flocculant.
The present invention can do following improvement: sets up agitating device, for stirring the material in filtrate treatment trough, makes filtrate can fully react with flocculant, and stirring can accelerate ion motion speed, and then can accelerate reaction rate such that it is able to form precipitation evenly and rapidly.
As one embodiment of the present of invention, described agitating device is sequentially connected with by oxygen increasing pump, air inlet pipe and gas distributor and constitutes, wherein, in described gas distributor is placed in filtrate treatment trough and close to V-Bottom top, in filtrate treatment trough is stretched in one end of described air inlet pipe and it is connected with the air inlet of gas distributor, oxygen increasing pump is then positioned at outside filtrate treatment trough, toward air inlet pipe and gas distributor conveying gas.
Described gas distributor includes at least gas distribution pipe, and wherein one end of every gas distribution pipe is closed, and the other end connects with the outlet side of described air inlet pipe, and the body of gas distribution pipe is provided with multiple qi-emitting hole, and described qi-emitting hole aperture is 1.5 ~ 2.5mm.
The present invention also can do and improve further below: set up de-gold solution reflux pipe, this reflux pipe includes acid-proof pump and feed tube, the liquid feeding end of described acid-proof pump connects with filtrate treatment trough lower liquid phase space, its liquid outlet then connects feed tube, the liquid outlet of feed tube is put into from the feed inlet and outlet of de-gold reaction device, start acid-proof pump to be recycled to by the de-gold solution in filtrate treatment trough in de-gold reaction device, process, to recycle de-gold solution for the de-gold carried out next time.
Present invention additionally comprises waste collection groove, be connected with the waste liquid outlet of filtrate treatment trough bottom.
Present invention additionally comprises precipitation collecting tank, be connected with the discharging opening of the bottom of described filtrate treatment trough.
Present invention additionally comprises garbage collection groove, described garbage collection groove, when de-gold reaction device discharging, is placed on the lower section of de-gold reaction device feed inlet and outlet.
Compared with prior art, the method have the advantages that
(1) what the present invention provided puts simple in construction for the golden de-golden clothes reclaiming in waste and old circuit board, prepares raw material common and cheap, easy to operate, pollution-free, suitable for scale production.
(2) the native gold filter of the present invention makes de-gold solution, native gold and various gadget well be separated.
(3) present invention arranges agitating device, makes filtrate can fully react with flocculant, and stirring can accelerate ion motion speed, and then can accelerate reaction rate such that it is able to form precipitation evenly and rapidly.
(4) present invention arranges de-gold solution reflux pipe, is recycled to by the de-gold solution in filtrate treatment trough in de-gold reaction device, processes for the de-gold carried out next time, to recycle de-gold solution.
Accompanying drawing explanation
Fig. 1 is the schematic diagram put for the golden de-golden clothes reclaiming in waste and old circuit board of the embodiment of the present invention.
Fig. 2 is the de-gold reaction device schematic diagram of the present invention.
Fig. 3 is the filtrate treatment trough device schematic diagram of the present invention.
Fig. 4 is the native gold filtering tube device schematic diagram of the present invention.
Fig. 5 is the top view of the gadget recovery cylinder of the native gold cartridge filter of the present invention.
Fig. 6 is the top view of the native gold recovery cylinder 222 of the native gold cartridge filter of the present invention.
Detailed description of the invention
Being used for shown in Fig. 1 to Fig. 4 is reclaimed the de-golden clothes of the gold in waste and old circuit board and is set to one embodiment of the present of invention, including support 9, de-gold reaction device 1, native gold filter 2 and filtrate treatment trough 3, de-gold reaction device 1 and filtrate treatment trough 3 are arranged on support 9, and de-gold reaction device 1 is positioned at the top of filtrate treatment trough 3.De-gold reaction device 1 is a cylinder 11, and its two ends set rotating shaft 12, and top sets feed inlet and outlet 13 to be opened/closed, and bottom sets liquid outlet 14, set valve at liquid outlet 14, and the charging aperture of native gold filter 2 removably connects with liquid outlet 14, generally uses threaded.De-gold reaction device 1 is arranged on the bearing of support 9 by the rotating shaft 12 at two ends, and rotating shaft 12 is connected with the variator 15 of the clutch end driving motor 16.During discharging, unload native gold filter 2, the feed inlet and outlet 13 of de-gold reaction device 1 is rotated and carries out discharging down.
Native gold filter 2 includes that pipeline 20 and cartridge filter 22, pipeline 20 one end mouth of pipe are connected with the charging aperture 223 at the top of cartridge filter 22 as shown in Figure 4, and the other end mouth of pipe then liquid outlet 14 with de-gold reaction device 1 removably connects, and generally uses threaded.Cartridge filter 22 includes gadget recovery cylinder 221 and native gold recovery cylinder 222, and the opening of native gold recovery cylinder 222 and the bottom of gadget recovery cylinder 221 are connected by flange or screw.As it is shown in figure 5, the base plate 224 of gadget recovery cylinder 221 is covered with the filter opening 225 that can pass through solution and native gold but gadget can be stoped to pass through, filter opening 225 is for being obliquely installed, and its gradient is 30 ~ 60 °, aperture 1mm ~ 1.8mm.As shown in Figure 6, the bottom of native gold recovery cylinder 222 is filter screen 226, and filter screen 226 is the nylon wire of high mesh number.The mesh number of filter screen 226 requires to stop native gold to flow out the outflow the most not affecting solution.Specifically, the mesh number of filter screen 226 is 500 mesh.After de-gold reaction terminates, the liquid outlet 14 of de-gold reaction device 1 is gone to bottom, and connect the inlet of the pipeline 20 of native gold filter 2, in now native gold recovery cylinder 222 hangs on filtrate treatment trough 3.Open valve, de-gold solution, native gold and various gadget flow in native gold filter 2 and filter, stop due to base plate 224, gadget is stayed in gadget recovery cylinder 221, solution and native gold are in filter opening 225 enters native gold recovery cylinder 222, native gold is stopped by filter screen 226 to be stayed in native gold recovery cylinder 222, and solution and the solids less than native gold particle diameter are entered by filter screen 226 and carry out standing sedimentation in filtrate treatment trough 3.
The bottom of filtrate treatment trough 3 is V-Bottom, sets discharging opening 34 at its minimum point, and solids falls in V-Bottom, it is simple to discharge.The waste liquid outlet 35 of filtrate treatment trough 3 is located on the cell wall of V-Bottom top edge, and the minimum point of waste liquid outlet 34 is tangent with the top edge of V-Bottom, and filtrate treatment trough 3 external wall of upper portion sets Support joint 32, and Support joint 32 is fixed and on support 9.Filtrate treatment trough 3 side wall upper part is provided with reagent inlet 31, for adding the reagent such as flocculation agent in groove.Waste liquid outlet 35 connects waste collection groove 4.
The present embodiment also includes agitating device, material in stirring filtrate treatment trough 3, this agitating device is sequentially connected with is constituted by oxygen increasing pump 8, air inlet pipe 81 and gas distributor 82, wherein, in gas distributor 82 is placed in filtrate treatment trough 3 and close to V-Bottom top, in filtrate treatment trough 3 is stretched in the outlet side of air inlet pipe 81 and it is connected with the air inlet of gas distributor 82.Gas distributor 82 is the gas distribution pipe of horizontally set, and wherein one end of gas distribution pipe is closed, and the other end connects with the outlet side of air inlet pipe 81, and it is the qi-emitting hole of 2mm that side tube wall towards bottom land of the body of gas distribution pipe is evenly distributed with aperture down, aperture.Oxygen increasing pump 8 is passed through gas by air inlet pipe 81 in gas distributor 82, and gas is entered in the liquid in filtrate treatment trough 3 by gas distributor 82 again, due to the disturbance of gas, is stirred liquid in groove, in order to uniformly and quickly form precipitation.
The present embodiment also includes de-gold solution reflux pipe, and it includes acid-proof pump 7 and feed tube 71.The liquid feeding end of acid-proof pump 7 connects with filtrate treatment trough 3 lower liquid phase space, i.e. filtrate treatment trough 3 sets refluxing opening 33 on the cell wall of V-Bottom top edge, and the liquid feeding end of acid-proof pump 7 is connected with this refluxing opening 33.The liquid outlet of acid-proof pump 7 then connects feed tube 71, the liquid outlet of feed tube 71 is put into from the feed inlet and outlet 11 of de-gold reaction device 1, start acid-proof pump 7 to be recycled to by the de-gold solution in filtrate treatment trough 3 in de-gold reaction device 1, process, to recycle de-gold solution for the de-gold carried out next time.
The present embodiment also includes garbage collection groove 6, and this garbage collection groove 6, when de-gold reaction device 1 discharging, is placed on the lower section of de-gold reaction device 1 feed inlet and outlet, for collecting the material drawn off in de-gold reaction device 1.
The present embodiment also includes precipitating collecting tank 5, and the charging aperture of this precipitation collecting tank 5 is connected with the discharging opening 34 of filtrate collecting tank 3, for collecting the precipitate of discharge in filtrate collecting tank 3.
When carrying out de-gold and processing, waste and old circuit board and de-gold solution add de-gold reaction device 1 from the feed inlet and outlet 13 of de-gold reaction device 1, close feed inlet and outlet 13, drive motor 15 to drive the de-gold reaction device 1 of de-gold reaction device 1 to rotate, until reaction terminates.Then, the liquid outlet 14 of de-gold reaction device 1 going to bottom, connect liquid outlet 14 and the pipeline 21 of native gold filter 2, open valve, de-gold solution, native gold and various gadget flow in native gold filter 2 and filter.Meanwhile, starting oxygen increasing pump 8 and be passed through gas toward the liquid in filtrate treatment trough 3, gas enters in liquid through gas distributor 82 distribution, due to the disturbance of gas, is stirred liquid, uniformly and quickly forms precipitation.During discharging, unload native gold filter 2, the feed inlet and outlet 13 of de-gold reaction device 1 is rotated to bottom, garbage collection groove 6 is placed in the lower section of feed inlet and outlet 13, then carries out discharging.De-gold solution can recycle before not losing efficacy, therefore can start acid-proof pump 7 to be recycled to by the de-gold solution in filtrate treatment trough 3 in de-gold reaction device 1, for de-gold reaction next time, until de-gold solution lost efficacy, then open waste liquid outlet 35 waste liquid is expelled in waste collection groove 4.
The present invention can summarize with other the concrete form without prejudice to the spirit or essential characteristics of the present invention.The embodiment above of the present invention all can only be considered the description of the invention rather than restriction, the most every any trickle amendment, equivalent variations and modification made above example according to the substantial technological of the present invention, belongs in the range of technical solution of the present invention.
Claims (8)
- null1. put for reclaiming the de-golden clothes of the gold in waste and old circuit board for one kind，It is characterized in that，Including support、And rack-mount de-gold reaction device and filtrate treatment trough，Liquid outlet is set bottom described de-gold reaction device，This liquid outlet connects a native gold filter，Described native gold filter is positioned at filtrate treatment trough，Solution and solids after de-gold reaction enter in native gold filter and filter，The bottom of described filtrate treatment trough sets waste liquid outlet，Discharging opening is set bottom it，Described de-gold reaction device is a cylinder，Its two ends set rotating shaft，Top sets feed inlet and outlet to be opened/closed，Bottom sets liquid outlet，Valve is set at liquid outlet，And liquid outlet removably connects with native gold filter，Described de-gold reaction device is by the rack-mount bearing of the rotating shaft at two ends，Rotating shaft is connected with the clutch end driving motor，De-gold reaction device is driven to rotate by driving motor，Described native gold filter includes pipeline and cartridge filter，One end mouth of pipe of pipeline is connected with the charging aperture at the top of cartridge filter，The mouth of pipe of the other end is then as the inlet for being connected with de-gold reaction device liquid outlet，Described cartridge filter includes gadget recovery cylinder and native gold recovery cylinder，Gadget recovery cylinder is positioned at the top of native gold recovery cylinder，The opening at native gold recovery cylinder top removably connects with the bottom of gadget recovery cylinder，The base plate of described gadget recovery cylinder is covered with the filter opening that can pass through solution and native gold but gadget can be stoped to pass through，The bottom of described native gold recovery cylinder is the filter screen merely by solution，The material flowed out from de-gold reaction device is introduced into gadget recovery cylinder，Gadget is stayed in gadget recovery cylinder，Solution and native gold are in filter opening stream enters native gold recovery cylinder，Native gold is stopped by filter screen to be stayed in native gold recovery cylinder，Solution and the solids less than native gold particle diameter are entered in filtrate treatment trough by filter screen and carry out standing sedimentation process.
- The de-golden clothes of the gold for reclaiming in waste and old circuit board the most according to claim 1 are put, it is characterised in that described filter screen is nylon wire or the filter screen being made up of anticorrosive wear-resistant material；The filter opening of described gadget recovery cylinder base plate is for being obliquely installed, and its gradient is 30 ~ 60 °, aperture 1mm ~ 1.8mm.
- The de-golden clothes of the gold for reclaiming in waste and old circuit board the most according to claim 1 are put, it is characterized in that, the bottom of described filtrate treatment trough is V-Bottom, discharging opening is set at its minimum point, solids falls in this V-Bottom, it is simple to discharge, and the waste liquid outlet of described filtrate treatment trough is located on the cell wall of V-Bottom top edge, setting Support joint on the outer wall on filtrate treatment trough top, Support joint is fixed on support；Set reagent inlet on the sidewall on described filtrate treatment trough top, be used for adding flocculant.
- The de-golden clothes of the gold for reclaiming in waste and old circuit board the most according to claim 1 are put, it is characterised in that also include agitating device, for stirring the material in filtrate treatment trough.
- The de-golden clothes of the gold for reclaiming in waste and old circuit board the most according to claim 4 are put, it is characterized in that, described agitating device is sequentially connected with by oxygen increasing pump, air inlet pipe and gas distributor and constitutes, wherein, in described gas distributor is placed in filtrate treatment trough and close to V-Bottom top, in filtrate treatment trough is stretched in one end of described air inlet pipe and being connected with the air inlet of gas distributor, oxygen increasing pump is then positioned at outside filtrate treatment trough, toward air inlet pipe and gas distributor conveying gas.
- The de-golden clothes of the gold for reclaiming in waste and old circuit board the most according to claim 5 are put, it is characterized in that, described gas distributor includes at least gas distribution pipe, wherein one end of every gas distribution pipe is closed, the other end connects with the outlet side of described air inlet pipe, the body of gas distribution pipe is provided with multiple qi-emitting hole, and described qi-emitting hole aperture is 1.5 ~ 2.5mm.
- The de-golden clothes of the gold for reclaiming in waste and old circuit board the most according to claim 1 are put, it is characterized in that, also include de-gold solution reflux pipe, this reflux pipe includes acid-proof pump and feed tube, the liquid feeding end of described acid-proof pump connects with filtrate treatment trough lower liquid phase space, its liquid outlet then connects feed tube, the liquid outlet of feed tube is put into from the feed inlet and outlet of de-gold reaction device, start acid-proof pump to be recycled to by the de-gold solution in filtrate treatment trough in de-gold reaction device, process for the de-gold carried out next time, to recycle de-gold solution.
- The de-golden clothes of the gold for reclaiming in waste and old circuit board the most according to claim 1 are put, it is characterised in that also including waste collection groove, precipitation collecting tank and garbage collection groove, described waste collection groove is connected with the waste liquid outlet of filtrate treatment trough bottom；Described precipitation collecting tank is connected with the discharging opening of the bottom of described filtrate treatment trough；Described garbage collection groove, when de-gold reaction device discharging, is placed on the lower section of de-gold reaction device feed inlet and outlet.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410454693.1A CN104263940B (en) | 2014-09-09 | 2014-09-09 | The de-golden clothes of a kind of gold for reclaiming in waste and old circuit board are put |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410454693.1A CN104263940B (en) | 2014-09-09 | 2014-09-09 | The de-golden clothes of a kind of gold for reclaiming in waste and old circuit board are put |
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| Publication Number | Publication Date |
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| CN104263940A CN104263940A (en) | 2015-01-07 |
| CN104263940B true CN104263940B (en) | 2016-08-24 |
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| CN201410454693.1A Active CN104263940B (en) | 2014-09-09 | 2014-09-09 | The de-golden clothes of a kind of gold for reclaiming in waste and old circuit board are put |
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| CN112410558A (en) * | 2020-10-22 | 2021-02-26 | 孟君 | Environmental protection treatment recovery plant of abandonment circuit board in municipal refuse |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103374659B (en) * | 2012-04-25 | 2016-12-14 | 鑫广再生资源(上海)有限公司 | Valuable, the refinement recovery method of rare metal in a kind of garbage |
| EP2662464A1 (en) * | 2012-05-09 | 2013-11-13 | Inter-Euro Technology Limited | Gold recovery |
| CN202766325U (en) * | 2012-08-27 | 2013-03-06 | 灵宝金源矿业股份有限公司 | Gold recycling device |
| CN203200350U (en) * | 2013-03-29 | 2013-09-18 | 张家港幸运金属工艺品有限公司 | Gold recycling device for gold-plated piece |
| CN103667707A (en) * | 2013-12-04 | 2014-03-26 | 江苏融源再生资源科技有限公司 | Method of recovering gold and silver from a waste circuit board |
| CN204198815U (en) * | 2014-09-09 | 2015-03-11 | 中国电器科学研究院有限公司 | A kind of degold device for reclaiming the gold in waste and old circuit board |
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Address after: 510302 No. 204 Xingang West Road, Haizhu District, Guangzhou City, Guangdong Province Patentee after: China Electrical Appliance Research Institute Co., Ltd. Address before: 510300 No. 204 West Xingang Road, Guangdong, Guangzhou Patentee before: China National Electric Apparatus Research Institute Co., Ltd. |
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Address after: 510302 Building 1, 204 Xingang West Road, Haizhu District, Guangzhou City, Guangdong Province Patentee after: China Electrical Appliance Research Institute Co.,Ltd. Address before: 510302 building 3, 204 Xingang West Road, Haizhu District, Guangzhou City, Guangdong Province Patentee before: China Electrical Appliance Research Institute Co.,Ltd. |