CN102172475B - Silicon and silicon carbide separating and recovering device - Google Patents
Silicon and silicon carbide separating and recovering device Download PDFInfo
- Publication number
- CN102172475B CN102172475B CN 201110044908 CN201110044908A CN102172475B CN 102172475 B CN102172475 B CN 102172475B CN 201110044908 CN201110044908 CN 201110044908 CN 201110044908 A CN201110044908 A CN 201110044908A CN 102172475 B CN102172475 B CN 102172475B
- Authority
- CN
- China
- Prior art keywords
- silicon
- carborundum
- electrode
- electrophoresis
- tank
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Electrostatic Separation (AREA)
Abstract
The invention relates to a silicon and silicon carbide separating and recovering device. An inlet is connected with a vertical electrophoresis tank barrel; a positive electrode is arranged on an upper part in a vertical electrophoresis tank, and a negative electrode is arranged on the lower part in the vertical electrophoresis tank. A partition board divides the rear part of the vertical electrophoresis tank into an upper chamber and a lower chamber from the middle. The upper chamber is connected to a silicon outlet, and a lower chamber is connected to a silicon carbide outlet. The positive pole of an external power supply is connected to the positive electrode, and the negative pole of the external power supply is connected to the negative pole. In the invention, the partition board design is adopted in the middle of the electrophoresis tank, the silicon and silicon carbide, which are separated by an electric field, are discharged out continuously, and the purity and efficiency are improved.
Description
Technical field
The present invention relates to the recovery and utilization technology field of the accessory substance waste mortar of solar energy, electron trade silicon chip cutting processing, specifically a kind of for silicon chip dicing waste mortar silicon and carborundum separating and reclaiming device.
Background technology
At present, the industry cutting constantly gives off a large amount of waste mortars when producing the solar energy silicon rod, usually contains polyethylene glycol, carborundum and valuable high-purity silicon powder in these mortars.The generation of silicon bits has not only reduced the performance of cutting liquid, and causes the utilization rate of silicon to descend.Meanwhile, silicon chip has almost accounted for 50% cost in the photovoltaic generation industry.Therefore, how to reduce the silicon chip cost has become to reduce the solar cell totle drilling cost with the processes cost key link.
By valuable component in waste mortar is analyzed and market valuation, we find: contain 8%～9% HIGH-PURITY SILICON in waste mortar per ton, value is 40,000～4.5 ten thousand yuan; The polyethylene glycol that contains 35% left and right, value are 0.45 ten thousand yuan; Contain 33% silicon carbide micro-powder, value is 0.50 ten thousand yuan.Can find out the Maximum Value of monocrystalline silicon in contained each material of waste mortar.
Can find out from the energy strategy meaning and value assessment of monocrystalline silicon, the monocrystalline silicon that reclaims in waste mortar means a great.At present, people lay stress on the recovery aspect of polyethylene glycol and carborundum.In fact, it is the engineering of a system that waste mortar reclaims, and it also comprises separating of monocrystalline silicon micro mist and silicon carbide micro-powder.Only have work in every is all carried out, could truly reduce the silicon chip production cost.Mentioned the method for electrophoretic separation in patent 201010140008.X, adopt conventional electrophoretic apparatus to utilize electric field to realize separating of silicon and carborundum, its Main Problems is: the silicon of graininess and carborundum are not real ion, two kinds of particles shift in the horizontal direction positive/negative plate time space steric hindrance large, be affected by gravity greatly, separate unintelligible; Sample classification is collected difficult, obtains product purity low, need to increase repeated isolation work many times, and industrialization level is low.The present invention adopts the vertical electrophoresis device to reach the purpose of separating single crystal silicon micro mist and silicon carbide micro-powder, overcomes the problem of the gravity effect that horizontal strip electrophoresis brings, and improves product purity.Thereby for the sustainable development of China's photovoltaic generation industry provides strong technical support.
Summary of the invention
Purpose of the present invention is to provide the separator of silicon and carborundum in a kind of Novel silicon slice cutting waste mortar.
Silicon and carborundum separating and reclaiming device in a kind of silicon chip dicing waste mortar, import 1 is connected on Vertial electrophorestic tank cylindrical shell 2, is anode electrode above in Vertial electrophorestic tank, and the below is cathode electrode; Be provided with dividing plate 6 in the middle of the 1/5-1/3 part after electrophoresis tank, dividing plate is divided into two Room, up and down with electrophoresis tank; Upper chamber is connected to silicon and exports 3 places, and lower chamber is connected to carborundum and exports 4 places.External power supply 5 positive poles are connected on anode electrode, and negative pole is connected on cathode electrode.
Described electrophoresis tank can adopt injected plastics material integral body to shape, and perhaps adopts the metal material split to make.
Described electrode material can adopt metal and alloy or carbon or pottery to make.Netted, sheet, bar-shaped that electrode shape can adopt.
Silicon and carborundum separating and reclaiming device operation principle in described silicon chip dicing waste mortar, under certain conditions, the electronegative electrophoresis field force upwards that is subject to of silicon particle, electrolyte is heavy-fluid simultaneously, its density is larger, and under the heavy-fluid effect, the silicon particle is subject to buoyancy upwards simultaneously.Can overcome downward gravity under the acting in conjunction of electrophoresis field force and buoyancy.The silicon particle is attached on the anode electrode at top.And the carborundum particle positively charged effect that is subject to downward electric field force with this understanding, its density greater than heavy-fluid, can overcome buoyancy upwards under electric field force and action of gravitation simultaneously, thereby carborundum particle is attached on the cathode electrode of bottom.Adopt baffle design in the middle of slot electrode, made silicon and the carborundum opened through electric field separates realize continuous discharge, improved purity and efficient.
The technological progress that silicon of the present invention and carborundum separating and reclaiming device are obtained:
(1) the admittedly vertical electrophoresis separator that the present invention relates to has overcome the problem of the gravity effect that horizontal strip electrophoresis brings, and has improved product purity.
(2) the vertical electrophoresis separator admittedly that the present invention relates to, baffle design has been adopted in the centre, and the silicon that is conducive to separate and the continuous discharge of carborundum are raised the efficiency.
Description of drawings
Fig. 1: silicon of the present invention and carborundum separator electrophoresis tank structure chart.
Fig. 2: silicon of the present invention and carborundum separator fundamental diagram.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing 1, Fig. 2 is described in further detail the present invention.
Silicon involved in the present invention and carborundum separator operation principle are as follows: the waste mortar heavy-fluid suspension with handling well is entered in vertical electrophoresis separating tank 2 by separator inlet tube 1.By the electrode in external power supply 5 connection electrophoresis tanks.The Vertial electrophorestic tank top is anode electrode, and the below is cathode electrode.Control of Voltage under the acting in conjunction of heavy-fluid suspending power and electric field force, has been accumulated some silicon particles at 1V-10V near anode electrode, accumulated some carborundum particles near cathode electrode, has run into dividing plate 6 in flow process, and two parts particle is separated.
Embodiment 1:
Silicon and carborundum separating and reclaiming device in a kind of silicon chip dicing waste mortar, Vertial electrophorestic tank adopt the lucite injection molding to form.Anode adopts the titanium plate electrode, and negative electrode adopts the copper coin electrode.Import 1 is connected on Vertial electrophorestic tank cylindrical shell 2, is anode electrode above in Vertial electrophorestic tank, and the below is cathode electrode.Be provided with dividing plate 6 after electrophoresis tank in the middle of 1/5 part, dividing plate is divided into two Room, up and down with electrophoresis tank; Upper chamber is connected to silicon and exports 3 places, and lower chamber is connected to carborundum and exports 4 places.External power supply 5 positive poles are connected on anode electrode, and negative pole is connected on cathode electrode.
Embodiment 2:
Silicon and carborundum separating and reclaiming device in a kind of silicon chip dicing waste mortar, Vertial electrophorestic tank adopt stainless steel to process.Anode adopts coated titanium net electrode, and negative electrode adopts the graphite network pore electrod.。Import 1 is connected on Vertial electrophorestic tank cylindrical shell 2, is anode electrode above in Vertial electrophorestic tank, and the below is cathode electrode.Be provided with dividing plate 6 after electrophoresis tank in the middle of 1/3 part, dividing plate is divided into two Room, up and down with electrophoresis tank; Upper chamber is connected to silicon and exports 3 places, and lower chamber is connected to carborundum and exports 4 places.External power supply 5 positive poles are connected on anode electrode, and negative pole is connected on cathode electrode.
Embodiment 3:
Silicon and carborundum separating and reclaiming device in a kind of silicon chip dicing waste mortar, Vertial electrophorestic tank adopt the stainless steel parts processing to form.Anode adopts the stannic oxide ceramic bar electrode, and negative electrode adopts the graphite rod electrode.Import 1 is connected on Vertial electrophorestic tank cylindrical shell 2, is anode electrode above in Vertial electrophorestic tank, and the below is cathode electrode.Be provided with dividing plate 6 after electrophoresis tank in the middle of 1/4 part, dividing plate is divided into two Room, up and down with electrophoresis tank; Upper chamber is connected to silicon and exports 3 places, and lower chamber is connected to carborundum and exports 4 places.External power supply 5 positive poles are connected on anode electrode, and negative pole is connected on cathode electrode.
From above device as can be known, the present invention is directed to that in silicon chip dicing waste mortar, silicon has carried out separating recovery with carborundum.The admittedly vertical electrophoresis separator that the present invention relates to has overcome the problem of the gravity effect that horizontal strip electrophoresis brings, and has improved product purity.The vertical electrophoresis separator admittedly that the present invention relates to, baffle design has been adopted in the centre, and the silicon that is conducive to separate and the continuous discharge of carborundum are raised the efficiency.
Claims (4)
1. one kind is used for silicon and carborundum separating and reclaiming device, and it is characterized in that: import (1) is connected on Vertial electrophorestic tank cylindrical shell (2), is anode electrode above in Vertial electrophorestic tank, and the below is cathode electrode; Be provided with dividing plate (6) in the middle of the 1/5-1/3 part after electrophoresis tank, dividing plate is divided into two Room, up and down with electrophoresis tank; Upper chamber is connected to silicon outlet (3) and locates, and lower chamber is connected to carborundum outlet (4) and locates, and external power supply (5) positive pole is connected on anode electrode, and negative pole is connected on cathode electrode; Its operation principle is: under certain conditions, the electronegative electrophoresis field force upwards that is subject to of silicon particle, electrolyte is heavy-fluid simultaneously, its density is larger, under the heavy-fluid effect, the silicon particle is subject to buoyancy upwards simultaneously, can overcome downward gravity under the acting in conjunction of electrophoresis field force and buoyancy, the silicon particle is attached on the anode electrode at top; And the carborundum particle positively charged effect that is subject to downward electric field force with this understanding, its density is greater than heavy-fluid simultaneously, can overcome buoyancy upwards under electric field force and action of gravitation, thereby carborundum particle is attached on the cathode electrode of bottom, adopted baffle design in the middle of slot electrode, made silicon and the carborundum opened through electric field separates realize continuous discharge.
2. retracting device according to claim 1 is characterized in that: electrophoresis tank adopts injected plastics material integral body to shape, and perhaps adopts the metal material split to make.
3. retracting device according to claim 1 is characterized in that: electrode material adopts metal and alloy or carbon or pottery to make.
4. retracting device according to claim 1, it is characterized in that: electrode shape is netted, sheet or bar-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110044908 CN102172475B (en) | 2011-02-23 | 2011-02-23 | Silicon and silicon carbide separating and recovering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110044908 CN102172475B (en) | 2011-02-23 | 2011-02-23 | Silicon and silicon carbide separating and recovering device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102172475A CN102172475A (en) | 2011-09-07 |
| CN102172475B true CN102172475B (en) | 2013-06-05 |
Family
ID=44515834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110044908 Expired - Fee Related CN102172475B (en) | 2011-02-23 | 2011-02-23 | Silicon and silicon carbide separating and recovering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102172475B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110095316A (en) * | 2019-04-04 | 2019-08-06 | 天津大学 | A kind of particle acquisition device, detection system and detection method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1990093A (en) * | 2005-12-30 | 2007-07-04 | 财团法人工业技术研究院 | Multiple-sample microfluid dielectric electrophoretic separation apparatus |
-
2011
- 2011-02-23 CN CN 201110044908 patent/CN102172475B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1990093A (en) * | 2005-12-30 | 2007-07-04 | 财团法人工业技术研究院 | Multiple-sample microfluid dielectric electrophoretic separation apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102172475A (en) | 2011-09-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101538722A (en) | Device for recovering copper in old electronic printed circuit board and method | |
| CN103050745B (en) | Pretreatment method for lead plaster of waste lead-acid accumulators | |
| CN105226344B (en) | A kind of recovery method of cobalt in waste lithium ion batteries acid lithium and graphite | |
| CN205347594U (en) | Device based on scrape non - uniform electric field of board -like pulse and carry cadmium | |
| CN111085334A (en) | Method for recycling waste power batteries by reselection method and jigging equipment | |
| CN109904545A (en) | The method of diaphragm, copper foil and anode is recycled from applying waste lithium ionic power battery | |
| CN102161486B (en) | Device and method for separating and recovering silicon and silicon carbide in cutting waste mortar of silicon wafers | |
| CN210367939U (en) | Metal gallium circulation electrolysis equipment | |
| CN102172475B (en) | Silicon and silicon carbide separating and recovering device | |
| CN201864610U (en) | Folded plate type cathode strengthening electrochemical device for treating wastewater containing heavy metal | |
| CN202030529U (en) | Device for separating and recycling silicon and silicon carbide in waste silicon wafer cutting mortar | |
| CN108588423A (en) | A kind of comprehensive recovering process of waste and old Rare Earths Battery | |
| CN111701692A (en) | Efficient nickel-hydrogen battery module crushing and sorting device and method | |
| CN103046084B (en) | electrolytic reduction system and electrolytic reduction method | |
| CN209349045U (en) | Lithium battery screening installation after one kind is broken | |
| CN106868543A (en) | A kind of bullion content blister copper electrorefining system and method high | |
| CN217512041U (en) | Iron tailings and red mud electrochemical iron and aluminum extraction silicate removal system | |
| CN110193416A (en) | It is a kind of to strengthen the high electric field pulse preprocess method that chalcopyrite is broken and sorts | |
| CN204817211U (en) | Broken integrated device that selects separately of old and useless lithium cell | |
| CN107394301A (en) | A kind of waste and old electrokinetic cell physiochemical mutagens technique | |
| CN107293815B (en) | Method for separating electrode current collector and electrode material of lithium ion battery | |
| CN204251722U (en) | A kind of micro-electric current zine plate displacement electrolyzer of Spongy Cadmium and the electrolyzer of application thereof | |
| CN104357881B (en) | A kind of electrolysis system based on hermetically sealed selective powder electrolysis unit | |
| CN107282285A (en) | A kind of method for the positive pole and negative pole for separating lithium ion battery | |
| CN112501426A (en) | Method for separating micro-fine copper particles from lithium iron phosphate battery waste electrode powder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20210223 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |