CN202030529U - Device for separating and recycling silicon and silicon carbide in waste silicon wafer cutting mortar - Google Patents
Device for separating and recycling silicon and silicon carbide in waste silicon wafer cutting mortar Download PDFInfo
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- CN202030529U CN202030529U CN2011200454523U CN201120045452U CN202030529U CN 202030529 U CN202030529 U CN 202030529U CN 2011200454523 U CN2011200454523 U CN 2011200454523U CN 201120045452 U CN201120045452 U CN 201120045452U CN 202030529 U CN202030529 U CN 202030529U
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Abstract
The invention discloses a device for separating and recycling silicon and silicon carbide in waste silicon wafer cutting mortar. An inlet tube is connected with a vertical electrophoresis tank barrel; an anode electrode tube is arranged in the middle upper side of the vertical electrophoresis tank; a cathode electrode tube is arranged in the lower side of the vertical electrophoresis tank; a main electrode tube outlet of the anode electrode tube is connected with a silicon outlet tube; the other side of the silicon outlet tube is connected with a silicon outlet pump; the silicon outlet pump is connected with the inside of a silicon recycling tank; a main electrode tube of the cathode electrode tube is connected with a silicon carbide outlet tube; the other side of the silicon carbide outlet tube is connected with a silicon carbide outlet pump; the silicon carbide outlet pump is connected with the inside of a silicon carbide recycling tank; the anode of an external power is connected with the anode electrode tube; and the cathode of the external power is connected with the cathode electrode tube. A form of electrode tubes is adopted on the design of the electrodes; moreover, a plurality of small holes are arranged on the electrode tubes; therefore, when the silicon or silicon carbide is adhered on the electrodes, the carbon or silicon carbide penetrates through the small holes and enters the main electrode tubes and then is taken out of the electrophoresis tank under the effect of a pump connected with the outsides of the electrode tubes, thus realizing continuous discharge of the device. Moreover, the problem of gravity influences brought by horizontal electrophoresis is overcome and the product purity is improved.
Description
Technical field
The utility model relates to the recovery and utilization technology field of the by product waste mortar of sun power, electron trade silicon chip cutting processing, specifically is silicon and silicon carbide separating and reclaiming device in a kind of silicon chip dicing waste mortar.
Background technology
At present, the industry cutting constantly gives off a large amount of waste mortars when producing the sun power silicon rod, contains polyoxyethylene glycol, silicon carbide and valuable high-purity silicon powder in these mortars usually.The generation of silicon bits has not only reduced the performance of cutting liquid, and causes the rate of utilization 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 total cost with the processes cost key link.
By valuable component in the waste mortar being analyzed and the marketable value assessment, we find: contain 8%～9% HIGH-PURITY SILICON in the waste mortar per ton, value is 40,000～4.5 ten thousand yuan; Contain the polyoxyethylene glycol about 35%, value is 0.45 ten thousand yuan; Contain 33% silicon carbide micro-powder, value is 0.50 ten thousand yuan.As can be seen, the value maximum of silicon single crystal in contained each material of waste mortar.
From the energy strategy meaning of silicon single crystal and value assessment as can be seen, the silicon single crystal that reclaims in the waste mortar means a great.At present, people lay stress on the recovery aspect of polyoxyethylene glycol and silicon carbide.In fact, it is the engineering of a system that waste mortar reclaims, and it also comprises separating of silicon single crystal micro mist and silicon carbide micro-powder.Have only every work is all carried out, could truly reduce the silicon chip production cost.Mentioned method of electrophoretic separation among the patent 201010140008.X, adopt conventional electrophoresis apparatus to utilize electric field to realize separating of silicon and silicon carbide, the subject matter of its existence is: the silicon of graininess and silicon carbide are not real ion, two kinds of particles shift in the horizontal direction positive/negative plate time space steric hindrance big, be subjected to influence of gravity big, separate unintelligible; Sample classification is collected difficult, and it is low to obtain product purity, need increase repeated isolation work many times, and industrialization level is low.The utility model adopts vertical electrophoresis device separating single crystal silicon micro mist and silicon carbide micro-powder, select for use the heavy-fluid of density between silicon and silicon carbide as medium, has overcome the problem of the influence of gravity that horizontal strip electrophoresis brings, and has improved product purity.Thereby for the Sustainable development of China's photovoltaic generation industry provides powerful technical support.
The utility model content
The purpose of this utility model provides the tripping device of silicon and silicon carbide in a kind of silicon chip dicing waste mortar.
Silicon and silicon carbide separating and reclaiming device in a kind of silicon chip dicing waste mortar, inlet pipe 1 are connected on the vertical electrophoresis groove drum body 2, are anode electrode pipe 3 above in the vertical electrophoresis groove, and the below is a cathode electrode pipe 4.Anode electrode Guan Youyi root main electrode pipe and perpendicular auxiliary electrode pipe are formed, and there are some apertures anode electrode pipe below.The outlet of anode electrode pipe main electrode pipe connects silicon outlet pipe 5, and silicon outlet pipe opposite side connects silicon outlet pump 6, and silicon outlet pump is connected in the silicon withdrawing can 7; The cathode electrode pipe also is made up of a main electrode pipe and perpendicular auxiliary electrode pipe, there are some apertures cathode electrode pipe top, cathode electrode pipe main electrode pipe coupling silicon carbide outlet pipe 8, silicon carbide outlet pipe opposite side connects silicon carbide outlet pump 9, silicon carbide outlet pump is connected in the silicon carbide withdrawing can 10, external power supply 11 positive poles are connected on the anode electrode pipe, and negative pole is connected on the cathode electrode pipe.
Because silicon and silicon carbide particle diameter are thinner, be very easy to be adsorbed onto and be difficult for discharging on the electrode, in order to address this problem, the continuous operation of implement device, the utility model is in the design of electrode, adopted the form of electrode tube, and some apertures on electrode tube, have been opened, like this after silicon or silicon carbide are attached on the electrode, under the effect that is connected to the outer pump of electrode tube, thereby silicon or silicon carbide pass aperture and enter into the main electrode pipe and take electrolyzer out of, the serialization discharging of implement device.
Described electrophoresis chamber can adopt injectable plastic material integral body to shape, and perhaps adopts the metallic substance split to make.
Described electrode materials can adopt metal and alloy to make.
The silicon that the utility model is involved and its principle of work of silicon carbide tripping device are characterised in that: under the certain condition, the electronegative electrophoresis field force upwards that is subjected to of silicon particle, electrolytic solution is heavy-fluid simultaneously, its density is between silicon and silicon carbide, and the silicon particle is subjected to buoyancy upwards simultaneously under the heavy-fluid effect.Under the acting in conjunction of electrophoresis field force and buoyancy, can overcome downward gravity.Make on the anode electrode of silicon particle attached to the top.And the positively charged with this understanding effect that is subjected to downward electrical forces of carborundum particle, its density can overcome buoyancy upwards greater than heavy-fluid under the effect of electrical forces and gravity simultaneously, thereby makes on the cathode electrode of carborundum particle attached to the bottom.
The technical progress that the utility model waste mortar retrieving arrangement is obtained:
(1) solid-solid separation device that relates to of the utility model adopts the vertical electrophoresis tripping device, has overcome the problem of the influence of gravity that horizontal strip electrophoresis brings, and has improved product purity.
(2) the admittedly heavy-fluid vertical electrophoresis tripping device that relates to of the utility model, the electrode design novelty of employing realizes continuous operation, raises the efficiency.
Description of drawings
Fig. 1: silicon of the present utility model and silicon carbide tripping device workflow diagram.
Fig. 2: silicon of the present utility model and silicon carbide tripping device electrophoresis chamber structure iron.
Fig. 3: silicon of the present utility model and silicon carbide tripping device fundamental diagram.
Embodiment
Below in conjunction with embodiment and accompanying drawing 1, Fig. 2, Fig. 3 is described in further detail the utility model.
Silicon that the utility model is related and silicon carbide tripping device principle of work are as follows: the waste mortar heavy-fluid suspension with handling well is entered in the vertical electrophoresis separator tank 2 by tripping device inlet pipe 1.By the electrode tube in the external power supply 11 connection electrophoresis chambers.Vertical electrophoresis groove top is an anode electrode pipe 3, and the below is a cathode electrode pipe 4.Voltage control is at 1-10V, under the acting in conjunction of electrical forces and buoyancy, overcome downward gravity, some silicon particles have been accumulated near the anode electrode, under the draft effect of silicon outlet pump 6, enter in the electrode tube person in charge by the aperture below the anode electrode pipe 3, pump electrophoresis chamber by pump, by silicon outlet pipe 5 in the silicon withdrawing can 7.The positively charged with this understanding effect that is subjected to downward electrical forces of carborundum particle, its density is greater than heavy-fluid simultaneously, under the effect of electrical forces and gravity, overcome buoyancy upwards, thereby some carborundum particles have been accumulated near making cathode electrode pipe 4, under the draft effect of silicon carbide outlet pump 9, enter in the electrode tube person in charge by the aperture above the cathode electrode pipe, pump electrophoresis chamber by pump, by silicon carbide outlet pipe 8 in the silicon carbide withdrawing can 10.
Embodiment 1:
Silicon that the utility model is related and silicon carbide tripping device: electrophoresis chamber adopts synthetic glass injection molded.Electrode materials adopts stainless steel.Inlet pipe 1 is connected on the vertical electrophoresis groove drum body 2, it above in the vertical electrophoresis groove anode electrode pipe 3, the below is a cathode electrode pipe 4, anode electrode Guan Youyi root main electrode pipe and perpendicular auxiliary electrode pipe are formed, there is aperture anode electrode pipe below, the outlet of anode electrode pipe main electrode pipe connects silicon outlet pipe 5, and silicon outlet pipe opposite side connects silicon outlet pump 6, and silicon outlet pump is connected in the silicon withdrawing can 7; The cathode electrode pipe also is made up of a main electrode pipe and perpendicular auxiliary electrode pipe, there is aperture cathode electrode pipe top, cathode electrode pipe main electrode pipe coupling silicon carbide outlet pipe 8, silicon carbide outlet pipe opposite side connects silicon carbide outlet pump 9, silicon carbide outlet pump is connected in the silicon carbide withdrawing can 10, external power supply 11 positive poles are connected on the anode electrode pipe, and negative pole is connected on the cathode electrode pipe.
Embodiment 2:
Silicon that the utility model is related and silicon carbide tripping device: electrophoresis chamber adopts stainless steel to process.Electrode materials adopts the titanium material.Inlet pipe 1 is connected on the vertical electrophoresis groove drum body 2, it above in the vertical electrophoresis groove anode electrode pipe 3, the below is a cathode electrode pipe 4, anode electrode Guan Youyi root main electrode pipe and perpendicular auxiliary electrode pipe are formed, there is aperture anode electrode pipe below, the outlet of anode electrode pipe main electrode pipe connects silicon outlet pipe 5, and silicon outlet pipe opposite side connects silicon outlet pump 6, and silicon outlet pump is connected in the silicon withdrawing can 7; The cathode electrode pipe also is made up of a main electrode pipe and perpendicular auxiliary electrode pipe, there is aperture cathode electrode pipe top, cathode electrode pipe main electrode pipe coupling silicon carbide outlet pipe 8, silicon carbide outlet pipe opposite side connects silicon carbide outlet pump 9, silicon carbide outlet pump is connected in the silicon carbide withdrawing can 10, external power supply 11 positive poles are connected on the anode electrode pipe, and negative pole is connected on the cathode electrode pipe.
From the above description as can be known, the utility model device has been realized the Separation and Recovery of silicon and silicon carbide in the silicon chip dicing waste mortar.Admittedly vertical electrophoresis tripping device that the utility model relates to has overcome the problem of the influence of gravity that horizontal strip electrophoresis brings, and has improved product purity.This device electrode modern design realizes continuous operation, raises the efficiency.
Claims (4)
1. silicon and silicon carbide separating and reclaiming device in the silicon chip dicing waste mortar, it is characterized in that: inlet pipe (1) is connected on the vertical electrophoresis groove drum body (2), be that anode electrode pipe (3) below is cathode electrode pipe (4) above in the vertical electrophoresis groove, anode electrode Guan Youyi root main electrode pipe and perpendicular auxiliary electrode pipe are formed, there is aperture anode electrode pipe below, the outlet of anode electrode pipe main electrode pipe connects silicon outlet pipe (5), silicon outlet pipe opposite side connects silicon outlet pump (6), and silicon outlet pump is connected in the silicon withdrawing can (7); The cathode electrode pipe also is made up of a main electrode pipe and perpendicular auxiliary electrode pipe, there is aperture cathode electrode pipe top, cathode electrode pipe main electrode pipe coupling silicon carbide outlet pipe (8), silicon carbide outlet pipe opposite side connects silicon carbide outlet pump (9), silicon carbide outlet pump is connected in the silicon carbide withdrawing can (10), external power supply (11) positive pole is connected on the anode electrode pipe, and negative pole is connected on the cathode electrode pipe.
2. silicon and silicon carbide separating and reclaiming device in the silicon chip dicing waste mortar according to claim 1, it is characterized in that: electrode has adopted the form of electrode tube, the anode and cathode electrode tube is formed by a main electrode pipe and perpendicular auxiliary electrode pipe, and has opened some apertures on electrode tube.
3. silicon and silicon carbide separating and reclaiming device in the silicon chip dicing waste mortar according to claim 1 is characterized in that: electrophoresis chamber adopts injectable plastic material integral body to shape, and perhaps adopts the metallic substance split to make.
4. silicon and silicon carbide separating and reclaiming device in the silicon chip dicing waste mortar according to claim 2 is characterized in that: electrode adopts metal and alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200454523U CN202030529U (en) | 2011-02-23 | 2011-02-23 | Device for separating and recycling silicon and silicon carbide in waste silicon wafer cutting mortar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200454523U CN202030529U (en) | 2011-02-23 | 2011-02-23 | Device for separating and recycling silicon and silicon carbide in waste silicon wafer cutting mortar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202030529U true CN202030529U (en) | 2011-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200454523U Expired - Lifetime CN202030529U (en) | 2011-02-23 | 2011-02-23 | Device for separating and recycling silicon and silicon carbide in waste silicon wafer cutting mortar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202030529U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102161486A (en) * | 2011-02-23 | 2011-08-24 | 天津大学 | Device and method for separating and recovering silicon and silicon carbide in cutting waste mortar of silicon wafers |
-
2011
- 2011-02-23 CN CN2011200454523U patent/CN202030529U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102161486A (en) * | 2011-02-23 | 2011-08-24 | 天津大学 | Device and method for separating and recovering silicon and silicon carbide in cutting waste mortar of silicon wafers |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20111109 Effective date of abandoning: 20130227 |
|
| RGAV | Abandon patent right to avoid regrant |