CN203878234U - Polycrystalline silicon ingot edge tailings surface pretreatment device - Google Patents
Polycrystalline silicon ingot edge tailings surface pretreatment device Download PDFInfo
- Publication number
- CN203878234U CN203878234U CN201420130748.9U CN201420130748U CN203878234U CN 203878234 U CN203878234 U CN 203878234U CN 201420130748 U CN201420130748 U CN 201420130748U CN 203878234 U CN203878234 U CN 203878234U
- Authority
- CN
- China
- Prior art keywords
- cuboid
- charging basket
- pond body
- silicon ingot
- tailing
- 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 - Lifetime
Links
- 229910021420 polycrystalline silicon Inorganic materials 0.000 title abstract description 5
- 238000005260 corrosion Methods 0.000 claims abstract description 40
- 230000007797 corrosion Effects 0.000 claims abstract description 40
- 239000002253 acid Substances 0.000 claims abstract description 18
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 13
- 239000010703 silicon Substances 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000003513 alkali Substances 0.000 claims description 17
- 238000000746 purification Methods 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 abstract description 7
- 239000000428 dust Substances 0.000 abstract description 4
- 238000004140 cleaning Methods 0.000 abstract description 2
- 239000002210 silicon-based material Substances 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract 1
- 239000008213 purified water Substances 0.000 abstract 1
- 230000005587 bubbling Effects 0.000 description 9
- 239000007921 spray Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 238000005266 casting Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 238000011049 filling Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Silicon Compounds (AREA)
Abstract
The utility model discloses a polycrystalline silicon ingot edge tailings surface pretreatment device and is used for solving the problems of sever pollution of the environmental dust and low surface cleaning quality and efficiency existing in the prior art. The surface pretreatment device is characterized in that a liquid discharge pipeline (4) is arranged in the center of the bottom of a cuboid-shaped corrosion tank body (1), a liquid discharge control valve (5) is arranged on the liquid discharge pipeline (4), tank bottom recesses (2) are arranged at the bottoms of right and left sides of the cuboid-shaped corrosion tank body (1), electric heaters (3) are arranged in the tank bottom recesses (2), an acid liquid input pipe (8), a lye input pipe (9), a purified water inlet pipe (12) and a compressed air inlet pipe (13) are respectively arranged on the inner side wall of the cuboid-shaped corrosion tank body (1) and a charging basket support net enclosure platform (6) and a charging basket in which edge tailings silicon material is filled are arranged on the bottom of the cuboid-shaped corrosion tank body (1). The reuse rate of the edge tailings of the silicon ingot is greatly improved.
Description
Technical field
The present invention relates to a kind of silicon ingot surface processing device, particularly the surface processing device of a kind of polycrystal silicon ingot limit tailing.
Background technology
In polycrystalline silicon casting ingot process process, polycrystalline silicon ingot casting surface can be stained with the impurity such as silicon nitride, due to fractional condensation and the diffusion in ingot casting production, partial impurities even can be penetrated into the top layer on polycrystalline silicon ingot casting surface, after the evolution technique of silicon ingot, can produce a large amount of limit tailings, these limit tailings are generally wanted reuse.Before reuse, to clear up silicon material surface, its surface and top layer impurities are removed.Prior art is to utilize the method for sandblast or manual polishing to carry out pre-treatment, exists working strength large, and environment dust pollution is serious, and cleaning quality and efficiency is low problem all.
Summary of the invention
The invention provides a kind of polycrystal silicon ingot limit tailing surface preparation device, solved the environment dust pollution that prior art exists serious, removing surface quality and efficiency is low technical problem all.
The present invention solves above technical problem by the following technical programs:
A kind of polycrystal silicon ingot limit tailing surface preparation device, comprise cuboid corrosion pond body, bottom surface central authorities at cuboid corrosion pond body are provided with drain line, in drain line, be provided with discharge opeing control valve, groove at the bottom of the two medial surface bottoms, left and right of cuboid corrosion pond body are provided with pond, in groove at the bottom of pond, be provided with electric heater, in the body of cuboid corrosion pond, be communicated with respectively acid solution input tube, alkali lye input tube, water purification input tube and pressurized air input tube, on the bottom surface of cuboid corrosion pond body, be provided with charging basket and support guard platform, at charging basket, support on guard platform and be movably set with charging basket, in charging basket, be provided with limit tailing.
Pond mouth one side at cuboid corrosion pond body is provided with suction tube, in the bottom of cuboid corrosion pond body, is provided with temperature sensor.
A polycrystal silicon ingot limit tailing surface treatment method, comprises the following steps:
The first step, first startup are arranged on the exhausting system of pond mouth one side of cuboid corrosion pond body, make suction tube in negative pressure state, the charging basket of filling limit tailing is placed into the charging basket arranging on the bottom surface of cuboid corrosion pond body and supports on guard platform;
Second step, close discharge opeing control valve, open alkali lye input tube, by pre-configured concentration, it is 100-110 gram/every liter, temperature is that the alkali lye of 40-50 degree Celsius is squeezed in the body of cuboid corrosion pond, the alkali lye of squeezing into will flood the limit tailing arranging in charging basket, then, open pressurized air input tube and electric heater simultaneously, the alkali lye being driven in the body of cuboid corrosion pond is heated and bubbling, control alkali liquid temperature at 65-70 degree Celsius, after bubbling soak time 4 hours 30 minutes, open the alkali lye that discharge opeing control valve corrodes cuboid in the body of pond and drain;
The 3rd step, open water purification input tube, opposite side tailing sprays, and sprays 1 minute;
The 4th step, close discharge opeing control valve, open acid solution input tube, by pre-configured concentration, be 30%, temperature is that the acid solution of room temperature is squeezed in the body of cuboid corrosion pond, the acid solution of squeezing into will be flooded the limit tailing arranging in charging basket, then, open pressurized air input tube and electric heater simultaneously, the acid solution being driven in the body of cuboid corrosion pond is heated and bubbling, control acid liquor temperature at 30-40 degree Celsius, after bubbling soak time 2-4 minute, open the acid solution that discharge opeing control valve corrodes cuboid in the body of pond and drain;
The 5th step, open water purification input tube, opposite side tailing sprays, and sprays 1 minute;
The 6th step, cuboid is corroded in the body of pond and piles water purification, soak after 2 minutes, open discharge opeing control valve by sewage emptying.
The present invention has simple in structure, practical, has overcome the problem of dust polluting environment, has greatly improved the reclamation rate of silicon ingot limit tailing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is that the present invention is at the structural representation of overlooking in direction.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail:
A kind of polycrystal silicon ingot limit tailing surface preparation device, comprise cuboid corrosion pond body 1, bottom surface central authorities at cuboid corrosion pond body 1 are provided with drain line 4, in drain line 4, be provided with discharge opeing control valve 5, groove 2 at the bottom of the two medial surface bottoms, left and right of cuboid corrosion pond body 1 are provided with pond, in groove at the bottom of pond 2, be provided with electric heater 3, at the cuboid corrosion pond body 1 interior acid solution input tube 8 that is communicated with respectively, alkali lye input tube 9, water purification input tube 12 and pressurized air input tube 13, on the bottom surface of cuboid corrosion pond body 1, be provided with charging basket and support guard platform 6, at charging basket, support on guard platform 6 and be movably set with charging basket 10, in charging basket 10, be provided with limit tailing 11.
Pond mouth one side at cuboid corrosion pond body 1 is provided with suction tube 10, in the bottom of cuboid corrosion pond body 1, is provided with temperature sensor 7.
A polycrystal silicon ingot limit tailing surface treatment method, comprises the following steps:
The first step, first startup are arranged on the exhausting system of pond mouth one side of cuboid corrosion pond body 1, make suction tube 10 in negative pressure state, the charging basket 10 of filling limit tailing 11 is placed into the charging basket arranging on the bottom surface of cuboid corrosion pond body 1 and supports on guard platform 6;
Second step, close discharge opeing control valve 5, open alkali lye input tube 9, by pre-configured concentration, it is 100-110 gram/every liter, temperature is that the alkali lye of 40-50 degree Celsius is squeezed in cuboid corrosion pond body 1, the alkali lye of squeezing into will flood the limit tailing 11 arranging in charging basket 10, then, open pressurized air input tube 13 and electric heater 3 simultaneously, the alkali lye being driven in cuboid corrosion pond body 1 is heated and bubbling, control alkali liquid temperature at 65-70 degree Celsius, after bubbling soak time 4 hours 30 minutes, opening the alkali lye that discharge opeing control valve 5 corrodes cuboid in pond body 1 drains,
The 3rd step, open water purification input tube 13, opposite side tailing 11 sprays, and sprays 1 minute;
The 4th step, close discharge opeing control valve 5, open acid solution input tube 8, by pre-configured concentration, be 30%, temperature is that the acid solution of room temperature is squeezed in cuboid corrosion pond body 1, the acid solution of squeezing into will be flooded the limit tailing 11 arranging in charging basket 10, then, open pressurized air input tube 13 and electric heater 3 simultaneously, the acid solution being driven in cuboid corrosion pond body 1 is heated and bubbling, control acid liquor temperature at 30-40 degree Celsius, after bubbling soak time 2-4 minute, open the acid solution that discharge opeing control valve 5 corrodes cuboid in pond body 1 and drain;
The 5th step, open water purification input tube 12, opposite side tailing 11 sprays, and sprays 1 minute;
The 6th step, cuboid is corroded in pond body 1 and piles water purification, soak after 2 minutes, open discharge opeing control valve 5 by sewage emptying.
The charging basket of cuboid corrosion of the present invention body 1 bottom, pond supports guard platform 6, and charging basket 10 is separated with cuboid corrosion body 1 bottom, pond, and bubble can be risen from charging basket 10 bottoms, has increased the effect of bubbling, has strengthened the cleansing power of opposite side tailing; Impurity under limit tailing cleans drops on cuboid corrosion body 1 bottom, pond, has avoided the secondary pollution of limit tailing in charging basket 10.The present invention is when processing limit tailing, according to the order of alkali lye, water, the acid solution circulation feed liquor that goes round and begins again, in whole process, pressurized air input tube 13 is always at delivering gas, and electric heater 3 just allowed when only in etching tank, liquid did not have electric heater 3 top to start; And strictly forbid that acid solution and alkali lye enter in pond simultaneously.
Claims (2)
1. a polycrystal silicon ingot limit tailing surface preparation device, comprise cuboid corrosion pond body (1), it is characterized in that, bottom surface central authorities at cuboid corrosion pond body (1) are provided with drain line (4), in drain line (4), be provided with discharge opeing control valve (5), groove (2) at the bottom of the two medial surface bottoms, left and right of cuboid corrosion pond body (1) are provided with pond, in groove at the bottom of pond (2), be provided with electric heater (3), in cuboid corrosion pond body (1), be communicated with respectively acid solution input tube (8), alkali lye input tube (9), water purification input tube (12) and pressurized air input tube (13), on the bottom surface of cuboid corrosion pond body (1), be provided with charging basket and support guard platform (6), at charging basket, support on guard platform (6) and be movably set with charging basket (10), in charging basket (10), be provided with limit tailing (11).
2. a kind of polycrystal silicon ingot according to claim 1 limit tailing surface preparation device, it is characterized in that, pond mouth one side at cuboid corrosion pond body (1) is provided with suction tube, in the bottom of cuboid corrosion pond body (1), is provided with temperature sensor (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420130748.9U CN203878234U (en) | 2014-03-23 | 2014-03-23 | Polycrystalline silicon ingot edge tailings surface pretreatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420130748.9U CN203878234U (en) | 2014-03-23 | 2014-03-23 | Polycrystalline silicon ingot edge tailings surface pretreatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203878234U true CN203878234U (en) | 2014-10-15 |
Family
ID=51678755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420130748.9U Expired - Lifetime CN203878234U (en) | 2014-03-23 | 2014-03-23 | Polycrystalline silicon ingot edge tailings surface pretreatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203878234U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103866396A (en) * | 2014-03-23 | 2014-06-18 | 山西中电科新能源技术有限公司 | Polycrystalline silicon ingot scrap surface pretreatment device and pretreatment method thereof |
-
2014
- 2014-03-23 CN CN201420130748.9U patent/CN203878234U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103866396A (en) * | 2014-03-23 | 2014-06-18 | 山西中电科新能源技术有限公司 | Polycrystalline silicon ingot scrap surface pretreatment device and pretreatment method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141015 |