CN110898994A - Corona electric field electric separation equipment for electronic waste - Google Patents
Corona electric field electric separation equipment for electronic waste Download PDFInfo
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- CN110898994A CN110898994A CN201911259587.7A CN201911259587A CN110898994A CN 110898994 A CN110898994 A CN 110898994A CN 201911259587 A CN201911259587 A CN 201911259587A CN 110898994 A CN110898994 A CN 110898994A
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- roller
- electric field
- electronic waste
- rotating roller
- grounding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C7/00—Separating solids from solids by electrostatic effect
- B03C7/02—Separators
- B03C7/06—Separators with cylindrical material carriers
Abstract
The invention discloses an electronic waste corona electric field electric separation device which comprises a general support, wherein a grounding rotating roller is arranged at the upper part of the general support, a columnar static electrode is arranged above one side of the grounding rotating roller, a material collecting tank is arranged below the side of the grounding rotating roller, a material blocking brush is arranged on the lower wall of the grounding rotating roller, the grounding rotating roller is connected with a transmission device, and the columnar static electrode is connected with an electrostatic generator. The transmission device comprises a speed regulating motor and a motor base thereof, and the speed regulating motor is connected with the roller shaft of the grounding roller through a tooth-shaped conveyor belt. The electric separation equipment is used for separating mixed metal particles of copper and aluminum and two other mixed metal materials with different electric properties. The purity, efficiency and recovery utilization rate of the copper-aluminum mixed metal particles can be effectively improved; the equipment has the advantages of low manufacturing cost, small occupied area and easy construction, transportation and maintenance.
Description
Technical Field
The invention relates to electrostatic separation equipment, in particular to corona electric field electrostatic separation equipment for electronic waste.
Background
In the day of the increasing electronic waste, in order to reduce the environmental pollution and better utilize and recover the materials with higher metal content compared with the ores, the electronic waste is gradually the focus of research in all countries around the world. Among them, Light-Emitting diodes (LEDs) are widely used as semiconductor electronic components for converting electrical energy into optical energy, and have a profound effect. In the case of an annual multiplication of the yield of LED lighting products, a huge amount of scrap is also present. At present, the recovery of LED lighting products is still in an initial research stage, and the key point to be overcome is a separation process after crushing. It is worth noting that the LED semiconductor lighting product contains abundant aluminum, barium, chromium, copper, gallium, iron, lead, phosphorus, noble metal gold and silver, and therefore, the LED semiconductor lighting product has wide economic benefits and important environmental significance for recycling the LED lighting lamp.
The LED industry is in a period of robust development, and as technology matures and costs fall in the next few years, the industry will meet further peak seasons. However, at the same time, the LED waste recycling and environmental protection industry is under great pressure, and there are many original ways of extracting metal elements from the electronic waste, but on the basis of considering the sorting and recycling efficiency, it is theoretically feasible and efficient to sort the broken electronic products by using different conductivities of charged particles in the electrostatic field.
Two major technological breakthroughs have been made in the development history of the electric separation technology: the method is characterized in that firstly, a corona charging technology is used, and secondly, the composite electric field separation combining a corona electric field and an electrostatic field is invented.
Electrostatic separation technology of particulate material is considered to be a very modern recovery technology distinguished from pyrogenic, wet and biological processes. The development of relevant laws and regulations in the field of environmental protection has also been motivated by the use of efficient, clean ways to separate industrial plastic waste containing plastic and metal particles.
In the prior art, the particle material corona charging mode has the disadvantages of complex equipment structure, low separation efficiency and low purity.
Disclosure of Invention
The invention aims to provide an electronic waste corona electric field electric separation device.
The purpose of the invention is realized by the following technical scheme:
the corona electric field electric separation equipment for the electronic waste comprises a general support, wherein a grounding rotating roller is arranged at the upper part of the general support, a columnar static electrode is arranged above one side of the grounding rotating roller, a material collecting tank is arranged below the side of the grounding rotating roller, a material blocking brush is arranged on the lower wall of the grounding rotating roller, the grounding rotating roller is connected with a transmission device, and the columnar static electrode is connected with an electrostatic generator.
According to the technical scheme provided by the invention, the corona electric field electric separation equipment for the electronic waste provided by the embodiment of the invention can effectively improve the purity, efficiency and recycling rate of the separated copper-aluminum mixed metal particles; through the program adjustment of the flight trajectory of the particles, the main process parameters for separating other two types of particles can be conveniently and quickly obtained; the equipment has the advantages of low manufacturing cost, small occupied area and easy construction, transportation and maintenance; because the mode of corona charging hardly has an effect on metal particles, the application field of the single-static-electrode sorting equipment is expanded.
Drawings
Fig. 1 is a schematic three-dimensional structure diagram of an electronic waste corona electric field electrostatic separation apparatus according to an embodiment of the present invention;
FIG. 2a is a schematic front view of an embodiment of the present invention;
FIG. 2b is a schematic side view of an embodiment of the present invention;
FIG. 2c is a schematic top view of an embodiment of the present invention;
in the figure:
1-an overall support, 2-a material collecting tank, 3-a motor support, 4-a speed regulating motor, 5-a material blocking brush, 6-a grounding rotating roller, 7-a columnar static electrode, 8-a bolt fastener, 9-an electrostatic generator, 10-a tooth-shaped conveyor belt and 11-a rotating roller shaft.
Detailed Description
The embodiments of the present invention will be described in further detail below. Details which are not described in detail in the embodiments of the invention belong to the prior art which is known to the person skilled in the art.
The invention discloses an electronic waste corona electric field electric separation device, which has the preferred specific implementation modes that:
the grounding rotating roller is arranged on the upper portion of the overall support, a columnar static electrode is arranged above one side of the grounding rotating roller, a material collecting groove is formed in the lower portion of the side, a material blocking brush is arranged on the lower wall of the grounding rotating roller, the grounding rotating roller is connected with a transmission device, and the columnar static electrode is connected with an electrostatic generator.
The transmission device comprises a speed regulating motor and a motor base thereof, and the speed regulating motor is connected with the roller shaft of the grounding roller through a tooth-shaped conveyor belt.
And a feeding device is arranged above the grounding rotating roller.
The electronic selection equipment also comprises a miniature camera and a bracket thereof.
The periphery of the electric separation equipment is provided with an electrostatic protection net.
The electric separation equipment is used for separating two mixed metal materials with different electric properties.
Mixed metal particles of copper and aluminum of the two mixed metal materials of different electrical properties.
The corona electric field electric separation equipment for the electronic waste can separate copper and aluminum particle materials with higher purity and two mixed metal materials with different electric properties. The periphery is protected by an electrostatic protection net, and a micro camera support is arranged in the separation space, so that the monitoring of the separation process can be realized.
Due to the adoption of the technical scheme, the invention has the following advantages and effects:
the method can effectively improve the purity, efficiency and recovery utilization rate of the copper-aluminum mixed metal particles;
through the program adjustment of the flight trajectory of the particles, the main process parameters for separating other two types of particles can be conveniently and quickly obtained;
the equipment has the advantages of low manufacturing cost, small occupied area and easy construction, transportation and maintenance;
because the mode of corona charging hardly has an effect on metal particles, the application field of the single-static-electrode sorting equipment is expanded.
The specific embodiment is as follows:
as shown in fig. 1 to 2c, the main process parameters of the sorting device are finally determined by the dynamics analysis of the particle flight trajectory performed by the math software Matlab, and the specific calculation method is as follows: establishing a plane mechanics model → compiling and calculating the angle of the particle at the separation point on the surface of the roller → compiling and calculating the electric field intensity at the separation point → carrying in each parameter under the condition of single variable to carry out track simulation → finally confirming a group of parameters suitable for separating the copper-aluminum metal particles through comparative analysis of different parameters under different conditions. After the program is compiled, different double-track curves are obtained by adjusting parameters, and whether the parameter set is a proper parameter set can be judged by the falling point horizontal displacement difference. The specific sorting mode is as follows: the copper-aluminum mixed material to be separated is positioned in the material container above the grounding roller 6 and is slowly spread by the feeding device, evenly and singly thrown onto the surface of the grounding roller 6. Meanwhile, the rotating speed of the grounding rotating roller 6 is controlled by the speed regulating motor 4, wherein a driving shaft of the speed regulating motor 4 is connected with a rotating roller shaft 11 through a toothed conveyor belt 10, and the rotating speed is regulated to be determined and suitable, so that the rotating roller 6 with a certain rotating speed carries mixed metal particles on the surface to rotate. Meanwhile, the cylindrical static electrode 7 at the upper right of the rotating roller gives a proper voltage value due to the action of the static generator 9, so that a space electric field is discharged outwards. At this moment, the mixed copper-aluminum particles with a certain initial speed fly into the separation space from the separation point, the material blocking hairbrush 5 below the rotary roller 6 is a particle for preventing escape due to electrostatic adsorption, the flying track gradually changes according to the electrical property of different particles, and finally the particles fall into the corresponding particle receiving groove 2, so that the separation of the copper-aluminum particles is realized.
The principle of the specific embodiment is as follows:
the copper-aluminum mixed material to be separated is positioned in the material container above the grounding roller 6 and is slowly spread by the feeding device, evenly and singly thrown onto the surface of the grounding roller 6. Meanwhile, the rotating speed of the grounding rotating roller 6 is controlled by the speed regulating motor 4, wherein a driving shaft of the speed regulating motor 4 is connected with a rotating roller shaft 11 through a toothed conveyor belt 10, and the rotating speed is regulated to be determined and suitable, so that the rotating roller 6 with a certain rotating speed carries mixed metal particles on the surface to rotate. Meanwhile, the cylindrical static electrode 7 at the upper right of the rotating roller gives a proper voltage value due to the action of the static generator 9, so that a space electric field is discharged outwards. At this moment, the mixed copper-aluminum particles with a certain initial speed fly into the separation space from the separation point, the material blocking hairbrush 5 below the rotary roller 6 is a particle for preventing escape due to electrostatic adsorption, the flying track gradually changes according to the electrical property of different particles, and finally the particles fall into the corresponding particle receiving groove 2, so that the separation of the copper-aluminum particles is realized. The data source of each main part production and manufacturing is determined by the comparative analysis of experimental data and simulation data, and the external voltage value, the rotating speed of the rotating roller and the width of each receiving groove can be adjusted within a fixed range. In addition, the electric separation equipment can separate two mixed metal materials of copper and aluminum, and the separation equipment of the single-static-electrode model can also separate two mixed metal materials of other different electrical properties through compiling of a Matlab program and change of an initial value, so that the electric separation equipment has certain research value. The invention relies on the existing electrostatic separation technology, researches the technical difficulties existing in the existing LED semiconductor lighting product crushing separation, develops mechanical design and structural optimization, obtains the material separation process bag after the LED is crushed through multi-aspect debugging, and provides the enriched material for later-stage wet recovery, thereby improving the recovery efficiency. The high-voltage corona electric field sorting device is mainly suitable for a high-voltage corona electric field sorting technology of LED broken materials, and provides technical support for improving recycling of LED semiconductor lighting products.
In the specific application process, the invention should preferentially determine the main process parameters, and the electric field factors, the material self factors and the mechanical structure factors in the separation space influence the separation result. Through the establishment of a plane mechanics model, the flight trajectory dynamics of the material is plotted and analyzed by using relevant software, and the flight trajectory dynamics is compared and analyzed with data under different conditions, a group of process parameters which are suitable for separating copper and aluminum material particles and have good separation effect is finally determined, and a process for determining the process parameters is reserved for subsequent adjustment. And then establishing and assembling a three-dimensional model according to the determined main process parameters.
The invention can effectively improve the purity, efficiency and recovery utilization rate of the copper-aluminum mixed metal particle separation by optimizing the design of the existing electric separation equipment, and the convenient adjustment of program compilation lays a foundation for the research of equipment for separating other two mixed particles, thereby further verifying the application of the separation equipment to the mixed metal materials with non-electric property and opening up the application field of single-static-electrode separation equipment.
In conclusion, the electric separation equipment is suitable for separating two kinds of metal particles of copper and aluminum, and actually, the electric separation equipment can be applied to separation of mixed particles of two different metals except copper and aluminum by adjusting initial values (parameters) of a program, and has a wide application prospect as single-static-electrode electric separation equipment.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. The utility model provides an electron discarded object corona electric field electricity selects equipment, its characterized in that, includes the totality support, the upper portion of totality support is equipped with the ground connection and changes the roller, one side top that the ground connection changes the roller is equipped with the column static electrode, and the below of this side is equipped with the material collecting vat, the lower wall that the ground connection changes the roller is equipped with keeps off the material brush, the ground connection changes the roller and is connected with transmission, the column static electrode is connected with electrostatic generator.
2. The electronic waste corona electric field electrical separation equipment of claim 1, wherein the transmission device comprises a speed regulating motor and a motor base thereof, and the speed regulating motor is connected with the roller shaft of the grounding roller through a toothed conveyor belt.
3. The corona electric field electrostatic separation apparatus of claim 2, wherein a loading device is disposed above the ground roller.
4. The electronic waste corona electric field electrostatic separation apparatus of claim 3, further comprising a miniature camera and its support.
5. The electronic waste corona electric field electric separation device of claim 4, wherein an electrostatic protection net is arranged at the periphery of the electric separation device.
6. The electronic waste corona electric field electrical separation apparatus of any one of claims 1 to 5, wherein the apparatus is used to separate two mixed metal materials of different electrical properties.
7. The electronic waste corona electric field electrostatic screening apparatus of claim 6, wherein the two mixed metal materials of different electrical properties are mixed metal particles of copper and aluminum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911259587.7A CN110898994A (en) | 2019-12-10 | 2019-12-10 | Corona electric field electric separation equipment for electronic waste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911259587.7A CN110898994A (en) | 2019-12-10 | 2019-12-10 | Corona electric field electric separation equipment for electronic waste |
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| Publication Number | Publication Date |
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| CN110898994A true CN110898994A (en) | 2020-03-24 |
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| CN201911259587.7A Pending CN110898994A (en) | 2019-12-10 | 2019-12-10 | Corona electric field electric separation equipment for electronic waste |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1654129A (en) * | 2005-02-03 | 2005-08-17 | 上海交通大学 | High tension electrostatic separating apparatus and method for worn-out broken printed circuit board granules |
| CN1654124A (en) * | 2005-02-03 | 2005-08-17 | 上海交通大学 | Breaking and high tension electrostatic separating method for worn-out printed circuit board |
| CN101104158A (en) * | 2007-08-06 | 2008-01-16 | 路洪洲 | Method for extracting and separating mixed metal particles in high-voltage electrostatic field |
| CN201389494Y (en) * | 2009-02-17 | 2010-01-27 | 东莞市天图环保科技有限公司 | High-voltage electrostatic sorting and feeding device for waste PCB grains |
| CN107442549A (en) * | 2017-06-23 | 2017-12-08 | 中国矿业大学 | The dry separation recovery process of valuable component in a kind of waste printed circuit board |
-
2019
- 2019-12-10 CN CN201911259587.7A patent/CN110898994A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1654129A (en) * | 2005-02-03 | 2005-08-17 | 上海交通大学 | High tension electrostatic separating apparatus and method for worn-out broken printed circuit board granules |
| CN1654124A (en) * | 2005-02-03 | 2005-08-17 | 上海交通大学 | Breaking and high tension electrostatic separating method for worn-out printed circuit board |
| CN101104158A (en) * | 2007-08-06 | 2008-01-16 | 路洪洲 | Method for extracting and separating mixed metal particles in high-voltage electrostatic field |
| CN201389494Y (en) * | 2009-02-17 | 2010-01-27 | 东莞市天图环保科技有限公司 | High-voltage electrostatic sorting and feeding device for waste PCB grains |
| CN107442549A (en) * | 2017-06-23 | 2017-12-08 | 中国矿业大学 | The dry separation recovery process of valuable component in a kind of waste printed circuit board |
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Application publication date: 20200324 |
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