CN102228897A - Copper metal recovery method - Google Patents
Copper metal recovery method Download PDFInfo
- Publication number
- CN102228897A CN102228897A CN2011101180968A CN201110118096A CN102228897A CN 102228897 A CN102228897 A CN 102228897A CN 2011101180968 A CN2011101180968 A CN 2011101180968A CN 201110118096 A CN201110118096 A CN 201110118096A CN 102228897 A CN102228897 A CN 102228897A
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- China
- Prior art keywords
- fragmentation
- frequency conversion
- breakup
- production efficiency
- printed circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/82—Recycling of waste of electrical or electronic equipment [WEEE]
Abstract
The invention relates to a copper metal recovery method, and especially relates to a method of recovering copper metal from a waste printed circuit board. A waste printed circuit board is transmitted by a frequency conversion conveying apparatus for a primary fragmentation, distributed by a frequency conversion fragmentation and material distributing apparatus for a secondary fragmentation to obtain a secondary fragmentation material; the secondary fragmentation material is mixed with water, screened by an automatic vibrating screen; and fine mixture particles obtained from the screening are distributed by a table material distributing apparatus, sorted by a sorting table, to prepare copper powder. The frequency conversion conveying apparatus employed in the invention can give full play to fragmentation production power of a crusher, and has a simple structure and high production efficiency. The frequency conversion fragmentation and material distributing apparatus and the table material distributing apparatus can realize uniform distribution of materials and raise production efficiency. A traditional artificial screening is substituted by the automatic vibrating screen to increase production efficiency substantially. An integral method is simple for realization, and has high production efficiency and strong practicality and popularization value.
Description
Technical field
The present invention relates to a kind of recovery method of copper metal, particularly a kind of method that reclaims the copper metal from discarded printed circuit boards belongs to waste and old resource recovery technology field.
Background technology
Printed circuit board (PCB) (PCB) is the basis of electronics industry, is indispensable important component part in each electronic product.Along with the develop rapidly of science and technology, information, electron trade, each electronic product updates and speeds up, and has also produced a large amount of electron wastes thereupon in recent years, and the quantity of discarded printed circuit boards also increases year by year.Because the main component of discarded printed circuit boards is that metal material such as copper, silver and the thermosetting plastics that contains special additive are main nonmetallic materials, therefore, with reclaiming and the utilization rationally that realizes resources such as metal, the reduction environmental pollution is that the innoxious recovery research of the discarded printed circuit boards of purpose is one of present research focus.
The method that copper metal recovery in the waste and old printed circuit board adopts mechanical-physical to handle usually, earlier metal component is separated with nonmetallic ingredient by Mechanical Crushing, according to each constitutive property, carry out sorting then, obtain metal and nonmetal respectively as density, electrical etc.This processing method, the shortcoming that ubiquity production efficiency is not high.The concrete reason following points:
At first, in the concrete crushing operation of waste and old printed circuit board, printed circuit board (PCB) is transported in the disintegrating machine through conveyer belt, because the broken speed of disintegrating machine and the transporting velocity of conveyer belt are difficult to synchronously, the transporting velocity that needs to adjust conveyer belt in actual production adapts to the broken speed of disintegrating machine.Conveyer belt of the prior art is that its travelling speed is constant by fixed frequently motor-driven, and therefore, existing conveyer belt is inconvenient to regulate, and can have influence on production efficiency.
Secondly, after waste and old printed circuit board is transported to disintegrating machine, need to carry out secondary pulverizing again, realize fully peeling off of molding powder and copper powder with further pulverizing through elementary pulverizing.Because primary breakup is faster than the speed of secondary breakup, so the material behind the separate unit primary breaker primary breakup need be distributed in many secondary breakup machines and carries out secondary breakup.In the prior art, and also do not have suitable feeding-distribution device, the material behind the separate unit primary breaker primary breakup can be distributed in many secondary breakup machines and carry out secondary breakup, cause brokenly the production efficiency of operation lower.
The 3rd, after waste and old printed circuit board was pulverized and to be finished, it formed the mixture of molding powder and copper powder, then the mixture of molding powder and copper powder was added water and screened, carrying out again than coarse granule of sifting out is in small, broken bits, and the thinner particle by screen cloth then carries out further sorting.In the prior art, owing to there is not full automatic screening plant, screening adopts the mode of artificial screening to carry out usually, and the production efficiency of artificial screening is lower, the progress that influence is produced.
In addition, when carrying out sorting production, mainly be to drive shaking table by drive unit to rock back and forth, the mixture that molding powder and copper powder add water formation flows on the shaking table body bed surface, because the density of molding powder and copper powder is different, shake at current, blend stop, shaking table and to match down, can realize separating of molding powder and copper powder.In the middle of prior art, the separate unit shaking table normally works independently, and therefore needs to extract mixture with an independent electric pump respectively and cooperates the separate unit shaking table, and its production capacity to electric pump is a kind of waste, and production efficiency also can not get improving.
Adopt the method for mechanical-physical to handle waste and old printed circuit board, realize that be to improve each component organic efficiency, the prerequisite of enhancing productivity and key fully, efficiently separating of each component, and the deficiencies in the prior art have limited the development of copper metal recovery technology from discarded printed circuit boards to a certain extent.
Summary of the invention
The purpose of this invention is to provide a kind of method that from waste and old printed circuit board, reclaims the copper metal, this method is by being provided with frequency conversion conveying device, feeding-distribution device, full-automatic screening plant and shaking table feeding-distribution device, realize the efficient separation of copper metal, make the regeneration better of copper metal, reach simultaneously and enhance productivity, the purpose that reduces production costs.
In order to address the above problem, the technical solution adopted in the present invention is as follows: waste and old printed circuit board is delivered to primary breaker through the frequency conversion conveying device carries out primary breakup, get the primary breakup material; The primary breakup material carries out secondary breakup through the broken feeding-distribution device sub-material of frequency conversion to secondary breakup machine again, gets the secondary breakup material; The secondary breakup material is added water, get mixture; Mixture must be than crude mixture particle and thin compound particles through the screening of full-automatic vibration sieve; It is further in small, broken bits to deliver to the secondary breakup machine than the crude mixture particle, and to the sorting shaking table, further sorting gets copper powder to thin compound particles through shaking table feeding-distribution device sub-material.
The present invention is as follows with respect to the beneficial effect of prior art:
1, frequency conversion conveying device can adapt to the broken speed of disintegrating machine by the transporting velocity of adjusting conveyer belt, and both are mated, and gives full play to the broken production capacity of disintegrating machine, and the production efficiency height is practical, and simple in structure;
2, the broken feeding-distribution device of frequency conversion is set after the separate unit primary breaker, the material behind the separate unit primary breaker primary breakup can be distributed in many secondary breakup machines and carries out secondary breakup, realize the high-efficiency operation of producing;
3, printed circuit board (PCB) is pulverized finished the secondary breakup material that obtains and add water gained mixture and screen, can substitute traditional artificial screening mode fully through full-automatic vibration;
4, in the middle of prior art, the separate unit shaking table normally works independently, and by the shaking table feeding-distribution device is set, material can be assigned to many shaking tables and carries out sorting to enhance productivity.
The specific embodiment
Below by embodiment the present invention is described in further details, these embodiment only are used for illustrating the present invention, do not limit the scope of the invention.
At first waste and old printed circuit board is delivered to the conveyer belt of a frequency conversion conveying device, described frequency conversion conveying device, include the conveying belt body, carry the active rotating shaft of belt body to be connected to drive motors, drive motors is connected to frequency-variable controller, is provided with reduction box between the active rotating shaft of drive motors and conveying belt body; Regulate the rotating speed of the frequency-variable controller control drive motors of frequency conversion conveying device, make the transporting velocity of conveyer belt synchronous, material is delivered to the primary breakup crusher machine with the broken speed of primary breaker, must the primary breakup material.
After the separate unit primary breaker, connect the broken feeding-distribution device of a frequency conversion then, the broken feeding-distribution device of described frequency conversion includes hopper, end at hopper is provided with feeding mouth, the bottom interval of hopper is provided with at least two discharging openings, be provided with rotatable in the hopper the material in the hopper is pushed to the screw propulsion rod of the other end from feeding mouth one end, one termination of screw propulsion rod has drive unit, and drive unit is made of motor and decelerator, is connected to frequency converter on the described motor; Regulate the frequency converter of the broken feeding-distribution device of frequency conversion, control the speed that material flows out from each discharging opening of feeding-distribution device, the material behind this separate unit primary breaker primary breakup evenly is distributed in three secondary breakup machines carries out secondary breakup, get the secondary breakup material.
Again gained secondary breakup material is added water, get mixture, mixture is delivered to a full-automatic vibration sieve, described full-automatic vibration sieve includes support and circular screen frame, screen frame is arranged on the support by three resilient legs, is provided with screen cloth in the screen frame, and screen frame is connected to vibrator; Vibrator energising Vibration on Start-up sieve can't be by the flowing out from the sidepiece that the screen cloth top vibrates the top sieve cover than coarse granule of screen cloth, must be than the crude mixture particle; By falling from the screen cloth below of screen cloth, carefully compound particles than fine grained; Return than the crude mixture particle that to deliver to the secondary breakup machine further in small, broken bits.
At last screening is obtained extracting by an electric pump than thin compound particles, deliver to shaking table feeding-distribution device charging aperture, after sub-material, material is evenly distributed to four sorting shaking tables from 4 discharge hole for discharge of shaking table feeding-distribution device, and further sorting gets copper powder.
As calculated, adopt this method can obtain the about 82 %(weight of copper content) copper powder, the copper that wherein surpasses 95 % obtains reclaiming.
Claims (1)
1. the recovery method of a copper metal is made up of the following step: waste and old printed circuit board is delivered to primary breaker through the frequency conversion conveying device carries out primary breakup, get the primary breakup material; The primary breakup material carries out secondary breakup through the broken feeding-distribution device sub-material of frequency conversion to secondary breakup machine again, gets the secondary breakup material; The secondary breakup material is added water, get mixture; Mixture must be than crude mixture particle and thin compound particles through the screening of full-automatic vibration sieve; It is further in small, broken bits to deliver to the secondary breakup machine than the crude mixture particle, and to the sorting shaking table, further sorting gets copper powder to thin compound particles through shaking table feeding-distribution device sub-material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101180968A CN102228897B (en) | 2011-05-09 | 2011-05-09 | Copper metal recovery method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101180968A CN102228897B (en) | 2011-05-09 | 2011-05-09 | Copper metal recovery method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102228897A true CN102228897A (en) | 2011-11-02 |
| CN102228897B CN102228897B (en) | 2013-05-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101180968A Expired - Fee Related CN102228897B (en) | 2011-05-09 | 2011-05-09 | Copper metal recovery method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102228897B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104947155A (en) * | 2015-05-28 | 2015-09-30 | 中南大学 | Process for recovering copper from waste circuit board to prepare high purity and high strength copper foil based on electrochemical method |
| CN105256142A (en) * | 2015-11-05 | 2016-01-20 | 清远市进田企业有限公司 | Recycling technology of copper metal in waste circuit board |
| CN105307775A (en) * | 2013-06-07 | 2016-02-03 | 汉阳大学校产学协力团 | Metal liberation device of printed circuit board |
| CN110561653A (en) * | 2019-08-17 | 2019-12-13 | 临武县华湘再生资源回收有限公司 | waste plastic covered wire recycling and processing equipment |
| CN114951216A (en) * | 2022-05-12 | 2022-08-30 | 清远市金运再生资源有限公司 | Wet recovery system and method for metal in waste circuit board |
| TWI796107B (en) * | 2022-01-20 | 2023-03-11 | 菖鼎科技股份有限公司 | Recycling methods of waste printed circuit boards |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02218486A (en) * | 1989-02-21 | 1990-08-31 | Sanko:Kk | Recovery of metal copper from cutting refuse of printed circuit board |
| JP2000005702A (en) * | 1998-06-25 | 2000-01-11 | Dowa Mining Co Ltd | Method and device for recovering metal from solid waste |
| JP2000104126A (en) * | 1998-09-30 | 2000-04-11 | Shin Meiwa Ind Co Ltd | Recovering method of valuable metals containing copper from waste printed circuit board and system for recovery of valuable metal containing copper and separation of slag component from waste printed circuit board |
| JP2002233856A (en) * | 2001-02-06 | 2002-08-20 | Narifumi Uemura | Method and apparatus for separating metals from printed circuit board |
| CN1611308A (en) * | 2003-10-31 | 2005-05-04 | 登峰机械工业有限公司 | Copper foil recovery method for circuit board |
-
2011
- 2011-05-09 CN CN2011101180968A patent/CN102228897B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02218486A (en) * | 1989-02-21 | 1990-08-31 | Sanko:Kk | Recovery of metal copper from cutting refuse of printed circuit board |
| JP2000005702A (en) * | 1998-06-25 | 2000-01-11 | Dowa Mining Co Ltd | Method and device for recovering metal from solid waste |
| JP2000104126A (en) * | 1998-09-30 | 2000-04-11 | Shin Meiwa Ind Co Ltd | Recovering method of valuable metals containing copper from waste printed circuit board and system for recovery of valuable metal containing copper and separation of slag component from waste printed circuit board |
| JP2002233856A (en) * | 2001-02-06 | 2002-08-20 | Narifumi Uemura | Method and apparatus for separating metals from printed circuit board |
| CN1611308A (en) * | 2003-10-31 | 2005-05-04 | 登峰机械工业有限公司 | Copper foil recovery method for circuit board |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105307775A (en) * | 2013-06-07 | 2016-02-03 | 汉阳大学校产学协力团 | Metal liberation device of printed circuit board |
| CN105307775B (en) * | 2013-06-07 | 2017-04-26 | 汉阳大学校产学协力团 | Metal liberation device of printed circuit board |
| CN104947155A (en) * | 2015-05-28 | 2015-09-30 | 中南大学 | Process for recovering copper from waste circuit board to prepare high purity and high strength copper foil based on electrochemical method |
| CN104947155B (en) * | 2015-05-28 | 2017-04-26 | 中南大学 | Process for recovering copper from waste circuit board to prepare high purity and high strength copper foil based on electrochemical method |
| CN105256142A (en) * | 2015-11-05 | 2016-01-20 | 清远市进田企业有限公司 | Recycling technology of copper metal in waste circuit board |
| CN110561653A (en) * | 2019-08-17 | 2019-12-13 | 临武县华湘再生资源回收有限公司 | waste plastic covered wire recycling and processing equipment |
| TWI796107B (en) * | 2022-01-20 | 2023-03-11 | 菖鼎科技股份有限公司 | Recycling methods of waste printed circuit boards |
| CN114951216A (en) * | 2022-05-12 | 2022-08-30 | 清远市金运再生资源有限公司 | Wet recovery system and method for metal in waste circuit board |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102228897B (en) | 2013-05-08 |
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Granted publication date: 20130508 Termination date: 20210509 |
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| CF01 | Termination of patent right due to non-payment of annual fee |