CN103233244A - Method for extracting copper by utilizing waste browning liquid - Google Patents
Method for extracting copper by utilizing waste browning liquid Download PDFInfo
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- CN103233244A CN103233244A CN2013101816883A CN201310181688A CN103233244A CN 103233244 A CN103233244 A CN 103233244A CN 2013101816883 A CN2013101816883 A CN 2013101816883A CN 201310181688 A CN201310181688 A CN 201310181688A CN 103233244 A CN103233244 A CN 103233244A
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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
The invention discloses a method for extracting copper by utilizing waste browning liquid. The method comprises the following steps of: adding flocculating agent to the waste browning liquid, so that large particles and organic substances with multiple potential adsorption points in the waste liquid are preliminarily settled; filtering the treated waste browning liquid to remove filter residues; adding chlorine salt to the filtrate; placing the solution to an electrolytic cell, coating indium oxide on the surface of a titanium mesh as an anode, carrying out electrolysis by using red copper as a cathode to recycle copper; or adding gelatin, thiourea and casein to the solution for electrolysis to recycle block copper. The method for extracting copper by utilizing waste browning liquid can be used for carrying out electrolysis by carrying out simple flocculating settling filter treatment or adding additive, is simple to operate, low in treatment cost and capable of recycling high-quality copper.
Description
Technical field
The present invention relates to a kind of method of utilizing useless brown liquid extraction copper.
Background technology
The brown technology is an indispensable operation of PCB inner plating.Along with high precision, highly dense unicircuit need, the multilayer circuit board development that the manufacturing technology trend of track making sheet is more accurate.Thereby increased the generation of consumption and the brown waste liquid of brown liquid.
Brown liquid itself is that sulfuric acid and the hydrogen peroxide by wherein carries out the microetch effect to copper foil surface; and under participating in, organic additive forms the rete that one deck increases interlayer pressing performance and protection copper face; follow cupric ion to dissolve in the brown liquid system in the process; when cupric ion is excessive; wherein univalent copper ion fails when in time being protected by organic complexing agent disproportionation reaction to take place; easily form pink circle at copper face, turn white and the unequal problem of brown copper face color and luster; therefore, the brown liquid that need upgrade in time is normal to guarantee the brown operation.
Contain many toxic organic compounds in the useless brown liquid and comprise that a large amount of triazole classs, polyethylene glycols etc. have the macromole of lone-pair electron such as N, S, P, a part forms title complex with cupric ion, the free existence in the solution of part.At present, have some data that it is handled, wherein there is big, the heavy copper poor quality of reagent consumption in chemical deposition method, economic benefit is low and secondary pollution problems and not welcome by market.That the brown liquid waste disposal also tends to handle is more economical, reclaim copper quality height and environmental protection requirement.
About the report to brown method of wastewater treatment in the PCB industry, " a kind of brown liquid regeneration device " disclosed in CN 201713399U, this technology main thought is the thinking of underpressure distillation and recrystallization, shortcoming such as wherein not only there is apparatus expensive in underpressure distillation, energy consumption is higher and but re-treatment is limited, the author also investigates the large-scale underpressure distillation developer of several families, accomplish the exploitation existing problems of corrosion-resistant, as in reactor, directly to reclaim crystalline solid equipment, the difficult extensive application.
And in utilizing electrolysis treatment brown waste liquid process, because brown liquid itself has characteristics such as strong complexing, strong film forming, directly the brown waste liquid is carried out electrolysis, easily form one deck rete at electrode surface, the electrode reaction of restriction organism and cupric ion.General adopt certain technology, destroy this complexing film-forming components earlier, carry out electrolysis again, like this can be so that cupric ion be reduced out at negative electrode, but these method gained electrolytic coppers are based on powder copper, as described in following several technology.
A kind of " light/ozone-electricity-absorption reaction device and method of copper is carried in the degraded of brown waste liquid " disclosed in CN 102583840 A, earlier by making with the organism in the useless brown liquid of light ozone cooperative degraded, after making that the cupric ion of complex state dissociates out, carry out electrolysis deposit copper again, this method is to a certain degree obtaining a kind of method of handling useless brown liquid preferably, but exists operation not very convenient.
Disclosing in CN 102603102 A and disclosing a kind of " a kind of technology from brown waste liquid electrolysis copper " among a kind of " brown liquid processing method " and CN 102560533 A is respectively to add metallic compound and the tensio-active agent that cationic polymers forms eletrolyzable complex copper or tool oxidation capacity to be used for decomposing organic matter and to improve heavy bronzing brightness waste liquid, but does not solve the brown waste liquid in the influence of electrode surface film forming.
Having related to " method that useless brown liquid is handled in a kind of electrocatalysis " in 2O1210587062.X is to add in waste liquid ionic catalyst organic while in the catalyzing oxidizing degrading waste liquid under the effect of electricity, is implemented in the catholyte copper.Relate to the mutual relationship of electric driving and concentration difference in the electrocatalysis process, influenced entire reaction efficient.
Summary of the invention
The objective of the invention is to utilize flocculation agent to make that macrobead is dignified with the organism major part with many current potentials adsorption site in solution, these particles and charged particle can be reduced after the filtration by diffusion or reach electrode surface in the electricity driving forming a skim, rete can be reduced to a certain extent to the restriction of heavy copper; Add a spot of villaumite again chlorion is provided, utilizing chlorion is the particle that has than the electronegative monatomic composition of suboxide reduction potential, easier pole plate on the sunny side moves and reacts at anode surface and produces the chlorine-bearing compound with oxidisability in electrolytic process, further limited organism in the anode film forming, improved the effective collision of cupric ion and electrode like this, added heavy copper additives then and carry out electrolysis again and can obtain block electrolytic copper.
A kind of method of utilizing useless brown liquid extraction copper provided by the invention may further comprise the steps:
1) in useless brown liquid, adds flocculation agent, make the macrobead in the waste liquid tentatively dignified with the organism with many current potentials adsorption site;
2) the useless brown liquid after the processing filters, and removes filter residue;
3) in filtrate, add villaumite;
4) above-mentioned solution is put into electrolyzer, uses the titanium net surface to apply Indium sesquioxide as anode, and red copper is recyclable copper as catholyte; Or after above-mentioned solution adds gelatin, thiocarbamide and casein food grade the block copper of electrolytic recovery.
Above-mentioned steps 1) in, flocculation agent is a kind of in polyacrylamide (PAM), polyaluminium sulfate, the bodied ferric sulfate, and its add-on is 1～2g/L.
Above-mentioned steps 3) in, villaumite is sodium-chlor or Repone K, and its add-on is 2～10g/L.
Above-mentioned steps 4) in, electrolysis is under the constant voltage of 6～12V, and interelectrode distance is the interior electrolysis of the groove of 8～10cm.
Above-mentioned steps 4) in, the mass ratio of described gelatin, thiocarbamide and casein food grade is 5:1:2, and its add-on is 0.002～0.01g/L.
Wherein the flocculation agent of Cai Yonging is to contain the inorganic polymer that atom has the polymkeric substance of lone-pair electron or has strong throwing out, utilize weird atom on this base polymer or lone-pair electron or the strong throwing out of group that macrobead and charged organic macromolecule coprecipitation in the waste liquid are got off, as organism polyacrylamide and inorganic polymer poly aluminium sulfate or polyiron sulfate.
Utilize polyacrylamide (to comprise anion-polyacrylamide, cationic-type polyacrylamide) contains the N and the high molecular chain-like structure that have lone-pair electron in, because it is electrically charged to attract and to oarse-grained package action co-precipitation, these macrobeads of Jiang Diing and charged macromole are at the filming function of electrode greatly being existed by the charged larger molecular organics of acid activation in the waste liquid.
Utilize polyaluminium sulfate or bodied ferric sulfate facile hydrolysis to produce charged colloidal particles and the chain-like structure of itself, make it in solution, produce strong throwing out, also can be so that under macrobead and the charged larger molecular organics precipitation, reduce these particles at the filming function of electrode, improved the contact rate of cupric ion at electrode surface.
After flocculation process is most macrobead and charged macromolecular organic compound sedimentation, also there is the few non-charged organism of number molecular weight in the solution, toward wherein adding a spot of villaumite, provide like this chlorion with suboxide reduction potential electricity drive under, the easier anode that is diffused into, analyse the chlorine reaction, occupied organism and be diffused into the anode surface reaction.
Anode: 2Cl--2e → Cl
2
2H
2O-?4e→4H
++O
2↑；
Negative electrode: Cu
2++ 2e → Cu;
2?H
++2e→H
2↑；
Simultaneously, at the anode annex, owing to separating out of chlorine can produce certain air supporting effect, limit organic close anode, chlorine is partly dissolved further oxidation of organic compounds in the water simultaneously, makes cupric ion dissociate out from complex compound.Can restore cupric ion at negative electrode like this.
Carry out electrolysis to adding villaumite in the brown waste liquid behind flocculation filtration, both can obtain electrolytic copper, generally be deposited in solution bottom with the powder brick, and the price of powder copper is low and be not received by the market, under this condition, adds the quality that the electrolytic copper additive can improve electrolytic copper.
Through repeatedly experimental studies have found that, formerly adding behind the flocculation filtration and adding mass concentration in the waste water system of villaumite is that the mixture (three's mass ratio is 5:1:2) of gelatin, thiocarbamide and the casein food grade of 0.002～0.01g/L can obtain block electrolytic copper well.
Beneficial effect of the present invention:
1. because the consumption of the three class additives that use is all less, and cheap, can reduce the cost of drugs of use like this, and improve electrolytic efficiency.
The present invention by simple flocculating settling filtration treatment after, both can add additive therein and carry out electrolysis, simple to operate, processing cost is low.
3. the mixture of additive gelatin, thiocarbamide and casein food grade can improve the quality of electrolytic copper.
Description of drawings
The schematic flow sheet of Fig. 1 the inventive method.
Embodiment
Embodiment 1
Under the normal temperature, in the useless brown liquid of 500mL (its copper ion concentration is 28.9g/L), the polyacrylamide solution of the 2wt% that adding 50mL has configured, stir the 10min after-filtration, add 1g sodium-chlor in the filtrate, after stirring, in insoluble titanium base is covered with the electrolyzer of Indium sesquioxide anode and red copper negative electrode, carry out electrolysis, the constant voltage of control 10V, current density is 497A/m
2, behind the electrolysis 1.5h, having reclaimed 14.35g copper, copper recovery is 97.8%, is mainly powdery copper.
Embodiment 2
In the useless brown liquid of 500mL (its copper ion concentration is 28.9g/L), the polyacrylamide solution of the 2 wt % that adding 50mL has configured, stir the 10min after-filtration, in filtrate, add 1g sodium-chlor, having prepared gelatin, thiocarbamide and the casein food grade blended solid that mass ratio is 5:1:2 at the boiling water adding 0.01g of 10mL all joins in the waste water of 500mL after finishing dissolving, after stirring, in being covered with the electrolyzer of Indium sesquioxide anode and red copper negative electrode, insoluble titanium base carries out electrolysis, the constant voltage of control 10V, current density is 489A/m
2, behind the electrolysis 1.5h, having reclaimed the block copper of 13.87g, copper recovery is 96%, copper mainly is attached on the red copper.
Embodiment 3
In the useless brown liquid of 500mL (its copper ion concentration is 41.3g/L), the polyacrylamide solution of the 1 wt % that adding 50mL has configured, stir the 10min after-filtration, in filtrate, add 5g Repone K, having prepared gelatin, thiocarbamide and the casein food grade blended solid that mass ratio is 5:1:2 at the boiling water adding 0.03g of 10mL all joins in the waste water of 500mL after finishing dissolving, after stirring, in being covered with the electrolyzer of Indium sesquioxide anode and red copper negative electrode, insoluble titanium base carries out electrolysis, the constant voltage of control 6V, current density is 425A/m
2, behind the electrolysis 2.5h, having reclaimed the block copper of 19.36g, copper recovery is 93.8%, copper mainly is attached on the red copper.
Embodiment 4
In the useless brown liquid of 500mL (its copper ion concentration is 39.7g/L), the polyaluminum sulfate aluminum solutions of the 1 wt % that adding 50mL has configured, stir the 10min after-filtration, in filtrate, add 3g sodium-chlor, having prepared gelatin, thiocarbamide and the casein food grade blended solid that mass ratio is 5:1:2 at the boiling water adding 0.05g of 10mL all joins in the waste water of 500mL after finishing dissolving, after stirring, in being covered with the electrolyzer of Indium sesquioxide anode and red copper negative electrode, insoluble titanium base carries out electrolysis, the constant voltage of control 8V, current density is 415A/m
2, behind the electrolysis 2.5h, having reclaimed the block copper of 18.54g, copper recovery is 93.4%, copper mainly is attached on the red copper.
Embodiment 5
In the useless brown liquid of 500mL (its copper ion concentration is 39.7g/L), the polymeric ferrous sulphate solution of the 1.5 wt % that adding 50mL has configured, stir the 10min after-filtration, in filtrate, add 4g sodium-chlor, having prepared gelatin, thiocarbamide and the casein food grade blended solid that mass ratio is 5:1:2 at the boiling water adding 0.04g of 10mL all joins in the waste water of 500mL after finishing dissolving, after stirring, in being covered with the electrolyzer of Indium sesquioxide anode and red copper negative electrode, insoluble titanium base carries out electrolysis, the constant voltage of control 12V, current density is 419A/m
2, behind the electrolysis 2.5h, having reclaimed the block copper of 18.93g, copper recovery is 95.3%, copper mainly is attached on the red copper.
The above, only preferred embodiment of the present invention, be not that the technology of the present invention scope is done any restriction, add to a plurality ofly etc. so all technical spirit according to the present invention are made any trickle modification, equivalent variations and modification and deposit chamber to above embodiment, all belong in the technical solution of the present invention scope.
Claims (5)
1. one kind is utilized useless brown liquid to extract the method for copper, it is characterized in that may further comprise the steps:
1) in useless brown liquid, adds flocculation agent, make the macrobead in the waste liquid tentatively dignified with the organism with many current potentials adsorption site;
2) the useless brown liquid after the processing filters, and removes filter residue;
3) in filtrate, add villaumite;
4) above-mentioned solution is put into electrolyzer, uses the titanium net surface to apply Indium sesquioxide as anode, and red copper is recyclable copper as catholyte; Or after above-mentioned solution adds gelatin, thiocarbamide and casein food grade the block copper of electrolytic recovery.
2. method according to claim 1 is characterized in that: above-mentioned steps 1), flocculation agent is a kind of in polyacrylamide, polyaluminium sulfate, the bodied ferric sulfate, and its add-on is 1～2g/L.
3. method according to claim 1, it is characterized in that: above-mentioned steps 3), villaumite is sodium-chlor or Repone K, and its add-on is 2～10g/L.
4. method according to claim 1 is characterized in that: above-mentioned steps 4), electrolysis is under the constant voltage of 6～12V, and interelectrode distance is electrolysis in the groove of 8～10cm.
5. method according to claim 1, it is characterized in that: above-mentioned steps 4), the mass ratio of described gelatin, thiocarbamide and casein food grade is 5:1:2, and its add-on is 0.002～0.01g/L.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103510106A (en) * | 2013-09-22 | 2014-01-15 | 中南大学 | Copper electrolysis additive and use method thereof |
| CN103510107A (en) * | 2013-09-24 | 2014-01-15 | 湖南凯天重金属污染治理工程有限公司 | Method for recovering copper from brownification waste liquid |
| CN104372376A (en) * | 2014-06-20 | 2015-02-25 | 商实企业有限公司 | Method for recovering copper from brown oxidation waste liquid |
| CN104724861A (en) * | 2013-12-24 | 2015-06-24 | 张逸 | Device for treating waste brownification liquid by electro-catalysis |
| CN105567980A (en) * | 2016-02-02 | 2016-05-11 | 周益辉 | Method for recovering copper from brown oxidation wastewater of printed circuit board |
| CN106191919A (en) * | 2016-07-13 | 2016-12-07 | 深圳市京中康科技有限公司 | A kind of technique reclaiming copper from brown oxide waste liquid |
| WO2017008526A1 (en) * | 2015-07-15 | 2017-01-19 | 成都虹华环保科技股份有限公司 | Integrated processing system and method for brown oxidation waste |
| CN106350678A (en) * | 2016-08-30 | 2017-01-25 | 盛隆资源再生（无锡）有限公司 | Method of recycling corrosion inhibitor and copper from brownification waste liquid |
| CN110093627A (en) * | 2019-04-22 | 2019-08-06 | 深圳市泓达环境科技有限公司 | A kind of method and device and additive recycling copper from brownification liquid |
| CN110294546A (en) * | 2019-05-07 | 2019-10-01 | 深圳市浩天源环保科技有限公司 | A kind of brown oxide waste liquid processing method |
| CN111304694A (en) * | 2019-11-13 | 2020-06-19 | 铜陵有色金属集团股份有限公司 | Method for directly electrolyzing scrap copper |
| CN112125449A (en) * | 2020-09-21 | 2020-12-25 | 深圳市祺鑫环保科技有限公司 | Treatment method of brownification waste liquid |
| CN112573726A (en) * | 2020-11-24 | 2021-03-30 | 苏州美源达环保科技股份有限公司 | Brown liquid wastewater treatment method |
| CN112695345A (en) * | 2020-12-10 | 2021-04-23 | 广东臻鼎环境科技有限公司 | Method for recovering brownification waste liquid of printed circuit board |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103510106A (en) * | 2013-09-22 | 2014-01-15 | 中南大学 | Copper electrolysis additive and use method thereof |
| CN103510107A (en) * | 2013-09-24 | 2014-01-15 | 湖南凯天重金属污染治理工程有限公司 | Method for recovering copper from brownification waste liquid |
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| CN104724861A (en) * | 2013-12-24 | 2015-06-24 | 张逸 | Device for treating waste brownification liquid by electro-catalysis |
| CN104372376A (en) * | 2014-06-20 | 2015-02-25 | 商实企业有限公司 | Method for recovering copper from brown oxidation waste liquid |
| WO2017008526A1 (en) * | 2015-07-15 | 2017-01-19 | 成都虹华环保科技股份有限公司 | Integrated processing system and method for brown oxidation waste |
| CN105567980A (en) * | 2016-02-02 | 2016-05-11 | 周益辉 | Method for recovering copper from brown oxidation wastewater of printed circuit board |
| CN106191919A (en) * | 2016-07-13 | 2016-12-07 | 深圳市京中康科技有限公司 | A kind of technique reclaiming copper from brown oxide waste liquid |
| CN106350678A (en) * | 2016-08-30 | 2017-01-25 | 盛隆资源再生（无锡）有限公司 | Method of recycling corrosion inhibitor and copper from brownification waste liquid |
| CN106350678B (en) * | 2016-08-30 | 2018-08-17 | 盛隆资源再生（无锡）有限公司 | A method of recycling corrosion inhibiter and copper from brown oxide waste liquid |
| CN110093627A (en) * | 2019-04-22 | 2019-08-06 | 深圳市泓达环境科技有限公司 | A kind of method and device and additive recycling copper from brownification liquid |
| CN110294546A (en) * | 2019-05-07 | 2019-10-01 | 深圳市浩天源环保科技有限公司 | A kind of brown oxide waste liquid processing method |
| CN111304694A (en) * | 2019-11-13 | 2020-06-19 | 铜陵有色金属集团股份有限公司 | Method for directly electrolyzing scrap copper |
| CN112125449A (en) * | 2020-09-21 | 2020-12-25 | 深圳市祺鑫环保科技有限公司 | Treatment method of brownification waste liquid |
| CN112573726A (en) * | 2020-11-24 | 2021-03-30 | 苏州美源达环保科技股份有限公司 | Brown liquid wastewater treatment method |
| CN112695345A (en) * | 2020-12-10 | 2021-04-23 | 广东臻鼎环境科技有限公司 | Method for recovering brownification waste liquid of printed circuit board |
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Effective date of registration: 20201125 Address after: 518101 workshop 201, building 10, Fuhua Industrial Zone, Nanbo Avenue, Tangwei community, Fuhai street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Qixin Environmental Protection Technology Co.,Ltd. Address before: 518126 Guangdong city of Shenzhen province Baoan District Shu AFP Industrial Park C1 Building 1 layer Patentee before: SHENZHEN QIXIN TIANZHENG ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. |