CN113005296A - Method for recovering copper in copper-clad circuit board - Google Patents
Method for recovering copper in copper-clad circuit board Download PDFInfo
- Publication number
- CN113005296A CN113005296A CN202110245314.8A CN202110245314A CN113005296A CN 113005296 A CN113005296 A CN 113005296A CN 202110245314 A CN202110245314 A CN 202110245314A CN 113005296 A CN113005296 A CN 113005296A
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- Prior art keywords
- copper
- circuit board
- waste
- clad circuit
- crusher
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/005—Separation by a physical processing technique only, e.g. by mechanical breaking
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B15/00—Obtaining copper
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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
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Processing Of Solid Wastes (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a method for recovering copper in a copper-clad circuit board, which comprises the following steps: 1): feeding the waste copper-clad circuit board into vibration equipment for vibration; 2): conveying the copper-clad circuit board into a dry crusher for primary crushing to form large-particle waste particles; 3): feeding the waste particles into an adsorption bin, and absorbing screws in the waste particles away under the action of magnetic force; 4): feeding the waste particles into a wet crusher for crushing; 5): feeding the waste particles crushed in the step 4) into a shaking table, separating the waste particles by the shaking table, enabling the metal copper part to flow into a metal sedimentation tank and enabling the resin part to flow into a sewage residue tank; 6): and after the metal copper part is precipitated, clear water in the metal copper part is discharged. The copper recovery method provided by the invention is ingenious in design, and the waste copper-clad circuit board is subjected to dry crushing and wet crushing, so that resin particles and copper are separated, and the problem that a large amount of waste gas and waste water are generated in the existing copper recovery process is avoided, and the copper recovery method is clean and environment-friendly.
Description
Technical Field
The invention relates to a copper recovery technology, in particular to a method for recovering copper in a copper-clad circuit board.
Background
The circuit board is used as a basic component of various electrical appliances and equipment and is composed of a substrate and an electronic element, wherein the substrate is made by wrapping a copper sheet by a resin material; at present, a smelting method and a direct smelting method are generally adopted for recovering the waste circuit boards, and a large amount of waste water and waste gas are generated in the smelting process, so that the environment is seriously polluted.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention discloses a method for recovering copper in a copper-clad circuit board.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the invention discloses a method for recovering copper in a copper-clad circuit board, which comprises the following steps:
step 1): feeding the waste copper-clad circuit board into vibration equipment for vibration, wherein the vibration equipment is also communicated with a dust collector;
step 2): conveying the waste copper-clad circuit board obtained in the step 1 to a dry crusher for primary crushing to form large-particle waste particles;
step 3): conveying the waste material particles in the step 2) into an adsorption bin, and absorbing screws in the waste material particles under the action of magnetic force;
step 4): sending the waste particles obtained in the step 3) into a wet crusher for crushing so as to obtain small waste particles with small particles;
step 5): feeding the small waste particles crushed in the step 4) into a shaking table, separating by the shaking table, wherein the metal copper part flows into a metal sedimentation tank, and the resin part flows into a sewage residue tank;
step 6): and after the metal copper part is precipitated, discharging clear water in the metal copper part, thereby obtaining a metal copper product.
As one of the preferable schemes of the invention, the adsorption bin in the step 2) is a reversible adsorption bin, and an electromagnet is arranged in the adsorption bin.
The turnover adsorption bin is driven by the turnover mechanism to turn over by 90 degrees, the turnover mechanism comprises a support, a horizontal telescopic cylinder fixedly arranged on the support, a horizontal moving plate fixedly connected with a telescopic rod of the horizontal telescopic cylinder, a rack fixedly arranged on the horizontal moving plate, a gear meshed with the rack and a rotating shaft connected with the gear, and the adsorption bin is fixedly connected with the other end of the rotating shaft.
Further preferably, one side plate in the length direction of the adsorption bin is fixedly connected with the rotating shaft, and one side plate in the width direction of the adsorption bin is hinged to the bottom plate of the adsorption bin.
Further preferably, all be provided with the electro-magnet on the inside wall in absorption storehouse and the diapire.
Further preferably, a stirring mechanism is further arranged above the interior of the adsorption bin and used for stirring the waste copper-clad circuit boards so that screws in the waste particles are completely sucked away.
Further preferably, the horizontal telescopic cylinder is an oil cylinder or an air cylinder.
In a preferred embodiment of the present invention, the wet crusher comprises at least a first stage water crusher and a second stage water crusher, the first stage water crusher is charged with an aqueous solution containing a cleaning agent to crush, and the second stage water crusher is charged with clean water to crush.
As one of the preferable schemes of the invention, the clean water generated by the metal precipitation in the step 5) is input into the wet crusher.
Compared with the prior art, the invention has at least the following advantages:
the method for recovering copper from the waste copper-clad circuit board provided by the invention is ingenious in design, and resin particles and copper are sufficiently separated by carrying out dry crushing and wet crushing on the waste copper-clad circuit board, so that the problem that a large amount of waste gas and waste water are generated in the existing copper recovery process is avoided, and the method is clean and environment-friendly.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below.
FIG. 1 is a flow chart of a method for recovering copper from a copper-clad circuit board according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an adsorption bin and a turnover mechanism disclosed in the embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments and the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.
Referring to fig. 1-2, the embodiment of the invention discloses a method for recovering copper in a copper-clad circuit board, which comprises the following steps:
step 1): feeding the waste copper-clad circuit board into vibration equipment for vibration, wherein the vibration equipment is also communicated with a dust collector; the dirt on the waste circuit board can be shaken off from the waste circuit board in a vibration mode, and the dust generated by vibration can be sucked out through the dust suction equipment, so that the dirt in the waste circuit board can be reduced, the preparation for the following working procedures is made, and in addition, the screws can be loosened from the circuit board;
step 2): conveying the waste copper-clad circuit board obtained in the step 1 to a dry crusher for primary crushing to form large-particle waste particles; through preliminary crushing, the screws cannot be crushed due to small size;
step 3): conveying the waste particles in the step 2) into an adsorption bin 1, and absorbing screws in the waste particles under the action of magnetic force; some screws can be left on the collected waste copper-clad circuit board, and the step is designed to remove the screws so as to facilitate the subsequent separation of copper and resin;
step 4): sending the waste particles obtained in the step 3) into a wet crusher for crushing so as to obtain small waste particles with small particles;
step 5): feeding the small waste particles crushed in the step 4) into a shaking table, separating by the shaking table, wherein the metal copper part flows into a metal sedimentation tank, and the resin part flows into a sewage residue tank; wherein, after the resin part enters a sewage tank, suspended matter precipitates are sent to an industrial solid waste treatment plant for treatment;
step 6): and after the metal copper part is precipitated, discharging clear water in the metal copper part, thereby obtaining a metal copper product.
Wherein, adsorb storehouse 1 in step 2) for can overturning adsorb storehouse 1, adsorb and be provided with the electro-magnet in the storehouse 1, can overturn and adsorb storehouse 1 and drive by tilting mechanism and realize overturning 90, tilting mechanism includes support 2, the horizontal telescoping cylinder 3 who sets firmly on support 2, with the horizontal shifting plate 4 of the telescopic link fixed connection of horizontal telescoping cylinder 3, set firmly rack 5 on horizontal shifting plate 4, with rack 5 meshed gear 6, pivot 7 of being connected with gear 6, adsorb the other end fixed connection of storehouse 1 and pivot 7. The horizontal telescopic cylinder 3 adopts an oil cylinder or an air cylinder. In addition, the rotating shaft 7 penetrates through the supporting seat 8 and then is connected with the adsorption bin, the bracket 2 is further fixedly provided with a guide rail 9, and the horizontal moving plate 4 is in sliding connection with the guide rail 9.
Get into under the effect of magnetic force to the waste material granule in adsorbing storehouse 1, the screw in the waste material granule is adsorbed on the diapire or the lateral wall that adsorb storehouse 1, then horizontal telescopic cylinder drives horizontal moving plate 4 and removes, horizontal moving plate 4 and then drive 5 horizontal migration of rack, rack 5 removes and then drives gear 6 and rotates, gear 6 rotates and then drives pivot 7 and rotates, pivot 7 rotates and then drives and adsorb storehouse 1 and rotate 90, thereby make and adsorb storehouse 1 and erect, and then the waste material granule in the storehouse can pour.
One side plate in the length direction of the adsorption bin 1 is fixedly connected with the rotating shaft 7, and one side plate 11 in the width direction of the adsorption bin 1 is hinged with the bottom plate of the adsorption bin 1. After the adsorption bin 1 is turned over by 90 degrees, a side plate in the width direction of the adsorption bin 1 can be turned over outwards under the pressure of the waste particles, so that the waste particles are discharged from the bin conveniently.
Adsorb all to be provided with the electro-magnet on the inside wall in storehouse 1 and the diapire, produce the screw in the magnetic force adsorbs the waste material granule when the electro-magnet gets the electricity, and after the waste material granule processing in adsorbing storehouse 1 finishes, the electro-magnet loses the electricity under the control of controller to can collect the screw.
The upper portion in the absorption bin 1 is also provided with a stirring mechanism, and the stirring mechanism is used for stirring the waste copper-clad circuit board so that screws in the waste particles are completely sucked away. Wherein, the stirring head of the stirring mechanism is made of resin or other materials which are not absorbed by the magnet. The stirring can cause the screws in the waste particles to be sufficiently sucked away.
The wet crusher at least comprises a first-stage water-carrying crusher and a second-stage water-carrying crusher, the first-stage water-carrying crusher is internally added with aqueous solution with cleaning agent for crushing, and the second-stage water-carrying crusher is internally added with clear water for crushing. Can also clearly fall oily material through the waste material of first area water rubbing crusher ground large granule to can further smash the waste material through second level water rubbing crusher, thereby make things convenient for the copper recovery in next step. By at least two-stage wet crushing, finer particles can be obtained, so that copper and resin can be more sufficiently separated subsequently, and the separation rate is improved.
And 5) inputting clear water generated by the metal precipitation into the wet crusher, so that water resources can be recycled, and the waste of the water resources is avoided.
Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A method for recovering copper in a copper-clad circuit board is characterized by comprising the following steps: the method comprises the following steps:
step 1): feeding the waste copper-clad circuit board into vibration equipment for vibration, wherein the vibration equipment is also communicated with a dust collector;
step 2): conveying the waste copper-clad circuit board obtained in the step 1 to a dry crusher for primary crushing to form large-particle waste particles;
step 3): conveying the waste material particles in the step 2) into an adsorption bin, and absorbing screws in the waste material particles under the action of magnetic force;
step 4): sending the waste particles obtained in the step 3) into a wet crusher for crushing so as to obtain small waste particles with small particles;
step 5): feeding the small waste particles crushed in the step 4) into a shaking table, separating by the shaking table, wherein the metal copper part flows into a metal sedimentation tank, and the resin part flows into a sewage residue tank;
step 6): and after the metal copper part is precipitated, discharging clear water in the metal copper part, thereby obtaining a metal copper product.
2. The method for recovering copper from a copper-clad circuit board according to claim 1, wherein: in the step 2), the adsorption bin is a reversible adsorption bin, and an electromagnet is arranged in the adsorption bin.
3. The method for recovering copper from a copper-clad circuit board according to claim 2, wherein: the turnover adsorption bin is driven by the turnover mechanism to turn over by 90 degrees, the turnover mechanism comprises a support, a horizontal telescopic cylinder fixedly arranged on the support, a horizontal moving plate fixedly connected with a telescopic rod of the horizontal telescopic cylinder, a rack fixedly arranged on the horizontal moving plate, a gear meshed with the rack and a rotating shaft connected with the gear, and the adsorption bin is fixedly connected with the other end of the rotating shaft.
4. The method for recovering copper from a copper-clad circuit board according to claim 3, wherein: one side plate in the length direction of the adsorption bin is fixedly connected with the rotating shaft, and one side plate in the width direction of the adsorption bin is hinged to the bottom plate of the adsorption bin.
5. The method for recovering copper from a copper-clad circuit board according to claim 3, wherein: and electromagnets are arranged on the inner side wall and the bottom wall of the adsorption bin.
6. The method for recovering copper from a copper-clad circuit board according to claim 3, wherein: and a stirring mechanism is also arranged above the interior of the adsorption bin and is used for stirring the waste copper-clad circuit boards so as to completely suck away the screws in the waste particles.
7. The method for recovering copper from a copper-clad circuit board according to claim 3, wherein: the horizontal telescopic cylinder adopts an oil cylinder or an air cylinder.
8. The method for recovering copper from a copper-clad circuit board according to claim 1, wherein: the wet crusher at least comprises a first-stage water-carrying crusher and a second-stage water-carrying crusher, the first-stage water-carrying crusher is internally added with aqueous solution with a cleaning agent for crushing, and the second-stage water-carrying crusher is internally added with clear water for crushing.
9. The method for recovering copper from a copper-clad circuit board according to claim 1, wherein: inputting clear water generated by the metal precipitation in the step 5) into the wet crusher.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110245314.8A CN113005296A (en) | 2021-03-05 | 2021-03-05 | Method for recovering copper in copper-clad circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110245314.8A CN113005296A (en) | 2021-03-05 | 2021-03-05 | Method for recovering copper in copper-clad circuit board |
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| Publication Number | Publication Date |
|---|---|
| CN113005296A true CN113005296A (en) | 2021-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110245314.8A Pending CN113005296A (en) | 2021-03-05 | 2021-03-05 | Method for recovering copper in copper-clad circuit board |
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| CN (1) | CN113005296A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115213401A (en) * | 2022-06-14 | 2022-10-21 | 苏州鑫达资源再生利用有限公司 | Circuit board copper powder high-purity recovery processing device and recovery process |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2084055A (en) * | 1978-10-04 | 1982-04-07 | Knezevich Michael | Particles of reclaimed materials |
| CN102172597A (en) * | 2010-12-24 | 2011-09-07 | 广州有色金属研究院 | Discarded circuit board full-value recycling method |
| CN105032899A (en) * | 2015-08-07 | 2015-11-11 | 周群刚 | Waste circuit board resource utilization process |
| WO2017077512A1 (en) * | 2015-11-05 | 2017-05-11 | Attero Recycling Pvt. Ltd. | Process for recycling epoxy resins from electronic waste and product thereof |
| CN109500051A (en) * | 2018-10-18 | 2019-03-22 | 东莞理工学院 | A kind of waste printed circuit board recycling and reusing method |
| CN110434158A (en) * | 2019-08-26 | 2019-11-12 | 华南理工大学 | A kind of technique that mechanical approach processing waste printed circuit board prepares copper alloy powder |
| CN110496691A (en) * | 2019-07-04 | 2019-11-26 | 苏州鑫达资源再生利用有限公司 | The recovery method of copper in a kind of old circuit board |
| CN211563299U (en) * | 2019-10-15 | 2020-09-25 | 西安今盛电气设备有限公司 | Waste metal recovery device |
| CN212310399U (en) * | 2020-05-31 | 2021-01-08 | 扬州金帆科技发展有限公司 | Circuit board resource cleaning treatment device |
-
2021
- 2021-03-05 CN CN202110245314.8A patent/CN113005296A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2084055A (en) * | 1978-10-04 | 1982-04-07 | Knezevich Michael | Particles of reclaimed materials |
| CN102172597A (en) * | 2010-12-24 | 2011-09-07 | 广州有色金属研究院 | Discarded circuit board full-value recycling method |
| CN105032899A (en) * | 2015-08-07 | 2015-11-11 | 周群刚 | Waste circuit board resource utilization process |
| WO2017077512A1 (en) * | 2015-11-05 | 2017-05-11 | Attero Recycling Pvt. Ltd. | Process for recycling epoxy resins from electronic waste and product thereof |
| CN109500051A (en) * | 2018-10-18 | 2019-03-22 | 东莞理工学院 | A kind of waste printed circuit board recycling and reusing method |
| CN110496691A (en) * | 2019-07-04 | 2019-11-26 | 苏州鑫达资源再生利用有限公司 | The recovery method of copper in a kind of old circuit board |
| CN110434158A (en) * | 2019-08-26 | 2019-11-12 | 华南理工大学 | A kind of technique that mechanical approach processing waste printed circuit board prepares copper alloy powder |
| CN211563299U (en) * | 2019-10-15 | 2020-09-25 | 西安今盛电气设备有限公司 | Waste metal recovery device |
| CN212310399U (en) * | 2020-05-31 | 2021-01-08 | 扬州金帆科技发展有限公司 | Circuit board resource cleaning treatment device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115213401A (en) * | 2022-06-14 | 2022-10-21 | 苏州鑫达资源再生利用有限公司 | Circuit board copper powder high-purity recovery processing device and recovery process |
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