CN201809445U - Fused salt electrolyzing device for reducing SiO2 into Si - Google Patents
Fused salt electrolyzing device for reducing SiO2 into Si Download PDFInfo
- Publication number
- CN201809445U CN201809445U CN2010202834791U CN201020283479U CN201809445U CN 201809445 U CN201809445 U CN 201809445U CN 2010202834791 U CN2010202834791 U CN 2010202834791U CN 201020283479 U CN201020283479 U CN 201020283479U CN 201809445 U CN201809445 U CN 201809445U
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- Prior art keywords
- fused salt
- crucible
- casing
- lead
- silicon
- 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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- 150000003839 salts Chemical class 0.000 title claims abstract description 34
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title abstract description 11
- 235000012239 silicon dioxide Nutrition 0.000 title abstract description 5
- 239000000377 silicon dioxide Substances 0.000 title abstract description 5
- 229910052681 coesite Inorganic materials 0.000 title abstract 2
- 229910052906 cristobalite Inorganic materials 0.000 title abstract 2
- 229910052682 stishovite Inorganic materials 0.000 title abstract 2
- 229910052905 tridymite Inorganic materials 0.000 title abstract 2
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 19
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 20
- 229910052710 silicon Inorganic materials 0.000 abstract description 20
- 239000010703 silicon Substances 0.000 abstract description 20
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 239000002994 raw material Substances 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 2
- 229910002804 graphite Inorganic materials 0.000 abstract description 2
- 239000010439 graphite Substances 0.000 abstract description 2
- 239000011261 inert gas Substances 0.000 abstract description 2
- 239000002912 waste gas Substances 0.000 abstract description 2
- 230000009970 fire resistant effect Effects 0.000 abstract 2
- 229910052814 silicon oxide Inorganic materials 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 229960001866 silicon dioxide Drugs 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 2
- 239000011157 advanced composite material Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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Abstract
The utility model provides a fused salt electrolyzing device for reducing SiO2 into Si, which comprises a casing, a fused salt crucible and a furnace cover. A cavity is arranged in the casing, a fire-resistant heat insulating layer is arranged on the inner wall of the casing, a resistance wire is arranged in the fire-resistant heat insulating layer, the fused salt crucible is arranged inside the casing, and the furnace cover provided with a through hole is arranged on the casing. The fused salt electrolyzing device is characterized in that the fused salt crucible is connected with an anode lead arranged outside the casing by a lead, a porous crucible is arranged inside the fused salt crucible, an insulating cover is arranged on the porous crucible, a cavity is arranged inside the porous crucible, and a cathode is arranged inside the porous crucible and connected with a cathode lead arranged outside the casing by a lead. The fused salt electrolyzing device solves the problems of long electrolysis time, high energy consumption, severe pollution, difficult silicon collection and the like, directly prepares silicon with higher purity by means of electrolysis by using silicon oxide as a raw material, can effectively prevent the silicon from being oxidized since electrolysis reaction is carried out under protection of inert gas, and generates little waste gas, fused salt can be reused, a reactor and the crucibles are all made of graphite with low price, and both reaction temperature and energy consumption are low.
Description
Technical field
The utility model relates to a kind of fused salt electrolysis device, and particularly a kind of fused salt electrolysis silicon-dioxide is carried the electrolyzer of silicon, belongs to technical field of electrochemical metallurgy.
Background technology
Silicon is the important source material of making semi-conductor and advanced composite material.The industrial process of silicon generally adopts improvement siemens method at present.Yet this method but exists energy consumption height, with serious pollution problem, and is very limited with the silicon output of this method production simultaneously, and production cost is high, causes factory can't produce silicon in enormous quantities.Adopt the improvement Siemens Method to produce silicon in addition, its refuse that emits can serious environment pollution.Adopt electrolytic process system silicon, again can be owing to the high-ohmic that silicon-dioxide and silicon had, thus cause the increasing of electrolysis difficulty.The silicon that generates owing to reduction can deposit in addition, in case will increase the difficulty of its collection and processing behind the siliceous deposits.Therefore still there is not a kind of SiO of being applicable at present
2Be reduced to the fused salt electrolysis device of Si.
Summary of the invention
For solving high pollution, the high energy consumption that existing silicon production exists, and silicon electrolysis difficulty is big, and siliceous deposits easily takes place, and problem such as depositing silicon collection and treatment difficulty, and it is a kind of with SiO that the utility model provides
2Be reduced to the fused salt electrolysis device of Si.
The utility model is finished by following technical proposal: a kind of with SiO
2Be reduced to the fused salt electrolysis device of Si, comprise that band cavity, its inwall are provided with refractory insulating layer in it, establish the housing of resistance wire in the refractory insulating layer, place the intravital fused salt crucible of shell, be located at the bell of band through hole on the housing its, it is characterized in that the fused salt crucible links to each other by the outer positive wire of lead and housing, is provided with and establishes insulating cover on it, establishes in it porous crucible of cavity in the fused salt crucible, negative electrode places in the porous crucible, and links to each other by the outer cathode wire of lead and housing.So that energising is when being heated to more than 600 ℃, making alive carries out electrolysis, and resultant-Si is all accumulated in the porous crucible and conveniently comes out of the stove.
The porous crucible is provided with reference electrode outward in the described fused salt crucible, and draws outside the housing by lead.
Insulating cover on the described porous crucible is provided with material and adds through hole, with SiO
2Raw material is sent in the cavity in it by through hole.
Through hole on the described bell is divided into air inlet port, production well, electrode patchhole, so that feed rare gas element by air inlet port and production well in cavity, thereby resultant---Si is not oxidized in protection.
Described electrode patchhole is divided into reference electrode lead patchhole, cathode wire patchhole and positive wire and inserts.
The utlity model has following advantage and effect: adopt such scheme, overcome in the preparation silicon process and exist electrolysis time long, the energy consumption height, seriously polluted, problems such as silicon collection difficulty.And adopting silicon-dioxide as raw material, fused salt directly electrolytic preparation goes out purity than higher silicon.Electrolytic reaction simultaneously is to carry out under protection of inert gas, can prevent effectively that silicon is oxidized, and waste gas produces small.The utility model equipment is simple, and reactor and crucible all adopt cheap graphite as raw material.Temperature of reaction is low, and energy consumption is low, is an ideal silicon electrolyzer in fact.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
As Fig. 1, the utility model provide with SiO
2Be reduced to the fused salt electrolysis device of Si, comprise that band cavity 17, its inwall are provided with refractory insulating layer 3 in it, establish the housing 1 of resistance wire 2 in the refractory insulating layer 3, place the fused salt crucible 5 in the housing 1, be located at the bell 7 of band through hole on the housing 1 its, wherein fused salt crucible 5 links to each other with housing 1 positive wire outward by lead 13, to be used as anode, be provided with and establish insulating cover 14 on it, establish in it porous crucible 15 of cavity 18 in the fused salt crucible 5, negative electrode 16 places in the porous crucible 15, and links to each other with housing 1 cathode wire outward by lead; Be provided with reference electrode 4 outside the porous crucible 15 in the described fused salt crucible 5, and draw outside the housing by lead; Insulating cover 14 on the described porous crucible 15 is provided with material and adds through hole, with SiO
2Raw material is sent in the cavity 18 in it by through hole; Through hole on the described bell 7 is divided into air inlet port 8, production well 11, reference electrode 4 lead patchholes 9, cathode wire patchhole 10 and positive wire patchhole 12.
Claims (5)
1. one kind with SiO
2Be reduced to the fused salt electrolysis device of Si, comprise that band cavity, its inwall are provided with refractory insulating layer in it, establish the housing of resistance wire in the refractory insulating layer, place the intravital fused salt crucible of shell, be located at the bell of band through hole on the housing its, it is characterized in that the fused salt crucible links to each other by the outer positive wire of lead and housing, is provided with and establishes insulating cover on it, establishes in it porous crucible of cavity in the fused salt crucible, negative electrode places in the porous crucible, and links to each other by the outer cathode wire of lead and housing.
2. according to claim 1 with SiO
2Be reduced to the fused salt electrolysis device of Si, it is characterized in that the porous crucible is provided with reference electrode outward in the described fused salt crucible, and draw outside the housing by lead.
3. according to claim 1 with SiO
2Be reduced to the fused salt electrolysis device of Si, it is characterized in that the insulating cover on the described porous crucible is provided with material adding through hole.
4. according to claim 1 with SiO
2Be reduced to the fused salt electrolysis device of Si, it is characterized in that the through hole on the described bell is divided into air inlet port, production well, electrode patchhole.
5. according to claim 4 with SiO
2Be reduced to the fused salt electrolysis device of Si, it is characterized in that described electrode patchhole is divided into reference electrode lead patchhole, cathode wire patchhole and positive wire and inserts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202834791U CN201809445U (en) | 2010-08-06 | 2010-08-06 | Fused salt electrolyzing device for reducing SiO2 into Si |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202834791U CN201809445U (en) | 2010-08-06 | 2010-08-06 | Fused salt electrolyzing device for reducing SiO2 into Si |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201809445U true CN201809445U (en) | 2011-04-27 |
Family
ID=43892385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202834791U Expired - Fee Related CN201809445U (en) | 2010-08-06 | 2010-08-06 | Fused salt electrolyzing device for reducing SiO2 into Si |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201809445U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103060849A (en) * | 2013-01-22 | 2013-04-24 | 中南大学 | Upper part seal structure of aluminium electrolytic tank |
| CN104263372A (en) * | 2014-10-20 | 2015-01-07 | 风禾尽起科技(北京)有限公司 | Preparation method of carbon-silicone solution |
| CN104476653A (en) * | 2014-11-28 | 2015-04-01 | 中南大学 | Three-dimensional (3D) printing and manufacturing method of porous niobium parts |
| CN105384175A (en) * | 2015-12-25 | 2016-03-09 | 苏州格瑞动力电源科技有限公司 | Purification method of industrial waste silicon |
| CN106702435A (en) * | 2017-03-30 | 2017-05-24 | 安徽工业大学 | Porous medium auxiliary molten salt electrolysis metal refining device |
| CN107345304A (en) * | 2016-05-04 | 2017-11-14 | 沈阳铝镁设计研究院有限公司 | A kind of preparation method of the silicon electrolytic cell for preparing HIGH-PURITY SILICON and its silicon |
| CN110565107A (en) * | 2019-09-27 | 2019-12-13 | 东北大学 | method and device for regulating and controlling electrochemical deposition silicon preferred orientation growth in high-temperature molten salt |
-
2010
- 2010-08-06 CN CN2010202834791U patent/CN201809445U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103060849A (en) * | 2013-01-22 | 2013-04-24 | 中南大学 | Upper part seal structure of aluminium electrolytic tank |
| CN103060849B (en) * | 2013-01-22 | 2015-06-03 | 中南大学 | Upper part seal structure of aluminium electrolytic tank |
| CN104263372A (en) * | 2014-10-20 | 2015-01-07 | 风禾尽起科技(北京)有限公司 | Preparation method of carbon-silicone solution |
| CN104263372B (en) * | 2014-10-20 | 2018-02-06 | 风禾尽起科技(北京)有限公司 | A kind of preparation method of carbon silicon solution |
| CN104476653A (en) * | 2014-11-28 | 2015-04-01 | 中南大学 | Three-dimensional (3D) printing and manufacturing method of porous niobium parts |
| CN105384175A (en) * | 2015-12-25 | 2016-03-09 | 苏州格瑞动力电源科技有限公司 | Purification method of industrial waste silicon |
| CN107345304A (en) * | 2016-05-04 | 2017-11-14 | 沈阳铝镁设计研究院有限公司 | A kind of preparation method of the silicon electrolytic cell for preparing HIGH-PURITY SILICON and its silicon |
| CN107345304B (en) * | 2016-05-04 | 2019-07-23 | 沈阳铝镁设计研究院有限公司 | A kind of preparation method for the silicon electrolytic cell and its silicon preparing HIGH-PURITY SILICON |
| CN106702435A (en) * | 2017-03-30 | 2017-05-24 | 安徽工业大学 | Porous medium auxiliary molten salt electrolysis metal refining device |
| CN106702435B (en) * | 2017-03-30 | 2018-10-09 | 安徽工业大学 | A kind of porous media auxiliary fused-salt electrolytic refining metal device |
| CN109023435A (en) * | 2017-03-30 | 2018-12-18 | 安徽工业大学 | A kind of application method of porous media auxiliary fused-salt electrolytic refining metal device |
| CN109023435B (en) * | 2017-03-30 | 2019-07-23 | 安徽工业大学 | A kind of application method of porous media auxiliary fused-salt electrolytic refining metal device |
| CN110565107A (en) * | 2019-09-27 | 2019-12-13 | 东北大学 | method and device for regulating and controlling electrochemical deposition silicon preferred orientation growth in high-temperature molten salt |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20110427 Termination date: 20140806 |
|
| EXPY | Termination of patent right or utility model |