CN106702485A - Polycrystal ingot furnace - Google Patents
Polycrystal ingot furnace Download PDFInfo
- Publication number
- CN106702485A CN106702485A CN201710149783.3A CN201710149783A CN106702485A CN 106702485 A CN106702485 A CN 106702485A CN 201710149783 A CN201710149783 A CN 201710149783A CN 106702485 A CN106702485 A CN 106702485A
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- Prior art keywords
- ingot furnace
- heater
- polycrystalline ingot
- long
- furnace according
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- 238000009413 insulation Methods 0.000 claims abstract description 9
- 238000005266 casting Methods 0.000 claims description 18
- 238000004321 preservation Methods 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 230000001681 protective effect Effects 0.000 abstract 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 7
- 229910052710 silicon Inorganic materials 0.000 description 7
- 239000010703 silicon Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 229910052571 earthenware Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 239000002210 silicon-based material Substances 0.000 description 3
- 235000003140 Panax quinquefolius Nutrition 0.000 description 2
- 240000005373 Panax quinquefolius Species 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B28/00—Production of homogeneous polycrystalline material with defined structure
- C30B28/04—Production of homogeneous polycrystalline material with defined structure from liquids
- C30B28/06—Production of homogeneous polycrystalline material with defined structure from liquids by normal freezing or freezing under temperature gradient
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/02—Elements
- C30B29/06—Silicon
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Silicon Compounds (AREA)
Abstract
The invention discloses a polycrystal ingot furnace which comprises a crucible arranged in a furnace body, wherein a protective plate is arranged at the periphery of the crucible, a heater surrounds the periphery of the protective plate, and an insulation component surrounds the periphery of the heater; and the section of the crucible comprises four long sides and four short sides mutually arranged at intervals, wherein each long side is a straight line side, the length of the long side is not less than the preset integral multiple of a square side length formed by extracting an ingot, and the lengths of two projections of the short side parallel to the long side direction are not less than the square side length formed by extracting the ingot. The polycrystal ingot furnace disclosed by the invention is capable of further increasing the capacity of a single furnace, and the production cost of the polycrystal ingot furnace is rapidly lowered.
Description
Technical field
The invention belongs to photovoltaic apparatus technical field, more particularly to a kind of polycrystalline ingot furnace.
Background technology
Domestic photovoltaic is developed rapidly since 2006, and early stage polycrystalline ingot furnace is main based on import GT, and most original is matched somebody with somebody
Standby is G4 thermal fields, and standard charging is 270 kilograms, technological progress and home-made equipment with photovoltaic industry, and current line is in the industry
G4 thermal fields progressively increase to G6 thermal fields from G5, in addition the logical and smart work(polycrystalline ingot furnace of some capital fortune have been provided with G7 or
Person G8 thermal fields and G7 ingot casting technologies, but the photovoltaic enterprise of most of early stage is still based on GT450 or brilliant Sheng ingot furnace,
Because, in 1830mm or 1850mm, the G7 silicon ingots of big specification are for the body of heater size limitations of most of ingot furnaces such as GT or brilliant Sheng
Through that can not be received into G7 thermal fields completely so that GT stoves or the brilliant thermal field for containing stove can only stop at G6 thermal fields, it is impossible to carry out G7
The transformation of thermal field, single stove production capacity and ingot casting volume recovery cannot be incremented by again, it is impossible to the bigger silicon ingot of output.
The content of the invention
To solve the above problems, the invention provides a kind of polycrystalline ingot furnace, can further increase single stove production capacity, soon
The production cost of the low polycrystalline cast ingot of prompt drop.
A kind of polycrystalline ingot furnace that the present invention is provided, including the crucible in body of heater is arranged at, the peripheral part of the crucible sets
Backplate is equipped with, around having heaters, the periphery of the heater is surrounded with heat preservation component, the crucible for the periphery of the backplate
Section includes apart from one another by four sides long and four short sides for setting, wherein, it is described long while for linear pattern, and the side long
, not less than the default integral multiple of the square length of side formed after ingot casting evolution, the short side is parallel to the long side direction for length
Two length of projection are not less than the square length of side formed after ingot casting evolution.
Preferably, in above-mentioned polycrystalline ingot furnace, the length on the side long is not less than the 5 of the square length of side formed after evolution
Times.
Preferably, in above-mentioned polycrystalline ingot furnace, the short side is linear pattern side.
Preferably, in above-mentioned polycrystalline ingot furnace, the angle formed between the short side and the side long is 45 °.
Preferably, in above-mentioned polycrystalline ingot furnace, the heater is shaped as octagon.
Preferably, in above-mentioned polycrystalline ingot furnace, the straight flange heater block of the heater including detachable connection and
Arm of angle heater block.
Preferably, in above-mentioned polycrystalline ingot furnace, the straight flange heater block and the arm of angle heater block utilize the arm of angle
Connecting plate is attached.
Preferably, in above-mentioned polycrystalline ingot furnace, the heat preservation component is shaped as octagon.
Preferably, in above-mentioned polycrystalline ingot furnace, the straight flange insulation quilt of the heat preservation component including detachable connection and
Arm of angle insulation quilt.
Preferably, in above-mentioned polycrystalline ingot furnace, the heater is graphite heater or CFC heaters.
The above-mentioned polycrystalline ingot furnace provided by foregoing description, the present invention, because the section of the crucible is included mutually
Four sides long for separately setting and four short sides, wherein, it is described long while for linear pattern, and the length on the side long is not less than
The default integral multiple of the square length of side formed after ingot casting evolution, the short side is in two projections parallel to the long side direction
Length is quick to reduce many therefore, it is possible to the single stove production capacity of further increase not less than the square length of side formed after ingot casting evolution
The production cost of brilliant ingot casting.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Inventive embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
The schematic diagram of the first polycrystalline ingot furnace that Fig. 1 is provided for the embodiment of the present application；
The vertical cross-section stereogram of the first polycrystalline ingot furnace that Fig. 2 is provided for the embodiment of the present application；
The 5th kind of schematic diagram of the heater of polycrystalline ingot furnace that Fig. 3 is provided for the embodiment of the present application.
Specific embodiment
Core concept of the invention is to provide a kind of polycrystalline ingot furnace, can further increase single stove production capacity, quickly
Reduce the production cost of polycrystalline cast ingot.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
The first polycrystalline ingot furnace that the embodiment of the present application is provided as shown in figure 1, Fig. 1 for the embodiment of the present application provide the
A kind of schematic diagram of polycrystalline ingot furnace, the polycrystalline ingot furnace includes the crucible being arranged in body of heater 6, and the peripheral part of the crucible sets
Be equipped with backplate, wherein, the backplate can include but is not limited to straight flange backplate 201 as depicted and arm of angle backplate 202, this be with
What the shape of crucible matched, arm of angle backplate and straight flange backplate connecting hole etc. be designed with waist type groove can mutually finely tune it is octagonal
Position relationship, makes it possible to protect the crucible in combination backplate with the laminating of crucible outside, and the periphery of the backplate is surrounded with and adds
Hot device, wherein, the heater can include but is not limited to straight flange heater block 301 as depicted and arm of angle heater block 302,
The heater of annular is can also be, as long as can be accommodated in body of heater, the periphery of the heater is surrounded with guarantor
Warm part, wherein, the heat preservation component can include but is not limited to straight flange heat preservation component 401 as depicted and arm of angle insulation portion
Part 402, can also be the heat preservation component of annular, can be, it is necessary to stress, the earthenware as long as can be accommodated by body of heater
The section of crucible include apart from one another by set four sides long 101 and four short sides 102, wherein, the side long 101 be linear pattern
Side, thus the upper silicon material for ensureing to be wasted during final cutting silicon ingot square is minimum to greatest extent, and the length on the side long is not small
In the default integral multiple of the length of side of square 5 formed after ingot casting evolution, the short side 102 is parallel to the direction of side long 101
Two length of projection are not less than the length of side of square 5 formed after ingot casting evolution, by setting the length on this side long and short side,
On the basis of just can accommodating these crucibles, backplate, heater and heat preservation component in body of heater, increase to greatest extent most
The quantity of the square 5 produced eventually, so as to improve single stove inventory and ultimate output, improves operating efficiency, it is necessary to illustrate,
The short side 102 can be not only linear pattern while, or during circular arc, other any irregular shapes are can also be certainly
Shape, because the adjacent silicon ingot of this short side 102 is not intended as final product, therefore is that straight flange or arc-shaped edges are not limited to it
System, and, the crucible is preferably centrosymmetrical, so that ensure that each position of silicon material is heated evenly, in addition, the earthenware of this shape
Crucible is more rigid, increased the stability of crucible.In order to more intuitively show the structure of ingot furnace, Fig. 2, figure can also be referred to
The vertical cross-section stereogram of 2 the first polycrystalline ingot furnace provided for the embodiment of the present application.
Above-mentioned the first polycrystalline ingot furnace provided by foregoing description, the embodiment of the present application, due to the crucible
Section include apart from one another by four sides long and four short sides for setting, wherein, it is described long while for linear pattern, and the side long
Default integral multiple of the length not less than the square length of side formed after ingot casting evolution, the short side is parallel to the long side direction
Two length of projection not less than the square length of side formed after ingot casting evolution, increase single stove and produce therefore, it is possible to further
Can, the quick production cost for reducing polycrystalline cast ingot.
The embodiment of the present application provide second polycrystalline ingot furnace, be on the basis of above-mentioned the first polycrystalline ingot furnace,
Also include following technical characteristic：
With continued reference to Fig. 1,5 times of length not less than the length of side of square 5 formed after evolution on the side long 101.Specifically,
Can cause that the length on side long 101 is equal to the length of square, it is also possible to leave a small amount of surplus, be missed with reserving certain processing
Difference, but surplus can not be excessive, and being not so likely to result in furnace inner space can not accommodate the problem of these parts, it can be seen that this is
The transformation of G6 stoves is directed to, due to the thermal field of G7 can not be accommodated in G6 stoves, therefore the crucible of this special nature is devised, abandoned
Before section be the scheme of the crucible of quadrangle, although be only capable of output 5 squares close to long leg point, but side two ends long
Outside can also each produce a square until the end points of short side, 45 squares of output so eventually as described in Figure,
Although the scheme relative to 49 squares of normal G7 thermal fields is less, relative to 36 squares of G6 thermal field outputs, just carry
Risen very big yield ratio, single stove inventory can increase to more than 1000kg from 800kg, with improve single stove ingot casting production capacity and
Silicon material volume recovery, reduces production cost.
The embodiment of the present application provide the third polycrystalline ingot furnace, be on the basis of above-mentioned second polycrystalline ingot furnace,
Also include following technical characteristic：
With continued reference to Fig. 1, the short side 102 is linear pattern side.Specifically, by taking uppermost two short sides in Fig. 1 as an example,
The side area defined long of the two short sides and the horizontal direction that it is connected jointly, may finally cut out 5 it is complete
Square, only cuts out gore in position only adjacent with short side, it is impossible to used as final product, though it is not useable for cutting
Piece, but can be used as the pure material after purification.It can be seen that this can just increase yield, and if short side is linear pattern side, this earthenware
Crucible is more easily manufactured, and is thus susceptible to cleaning because surface is more smooth after ingot casting makes and finishes, and is difficult residual.
The embodiment of the present application provide the 4th kind of polycrystalline ingot furnace, be on the basis of above-mentioned the third polycrystalline ingot furnace,
Also include following technical characteristic：
The angle formed between the short side and the side long is 45 °.
It should be noted that in this case, it becomes possible to preferably ensure thermal field uniformity so that silicon ingot heating effect
More preferably.
The 5th kind of polycrystalline ingot furnace that the embodiment of the present application is provided, be it is above-mentioned the first in the 4th kind of polycrystalline ingot furnace
On the basis of any one, also including following technical characteristic：
The heater is shaped as octagon.
May be referred to Fig. 3, the 5th kind of schematic diagram of the heater of polycrystalline ingot furnace that Fig. 3 is provided for the embodiment of the present application,
It should be noted that due to furnace inner space limitation, the section of this heater is not octagon, but matched with crucible
Octagon with specific dimensions, side long and bond length can be finely tuned accordingly, to realize what crucible was more uniformly distributed
Heating.
The embodiment of the present application provide the 6th kind of polycrystalline ingot furnace, be on the basis of above-mentioned 5th kind of polycrystalline ingot furnace,
Also include following technical characteristic：
With continued reference to Fig. 1, the heater includes the straight flange heater block 301 and arm of angle heater block of detachable connection
302。
It should be noted that can also be not intended to limit, if simply set heater using the heater of monoblock type herein
Be set to it is detachable if, it is just convenient to repair, for example, simply some straight flange heater block or arm of angle heater block go wrong
When, it is possible to a part is only changed, it is overall without changing, to reduce maintenance cost.
The embodiment of the present application provide the 7th kind of polycrystalline ingot furnace, be on the basis of above-mentioned 6th kind of polycrystalline ingot furnace,
Also include following technical characteristic：
With continued reference to Fig. 1, the straight flange heater block 301 and the arm of angle heater block 302 are using arm of angle connecting plate 303
It is attached.
Further, these parts can be linked together using the bolt and nut 304 for cooperating, to prevent ingot casting
During produce loosen influence heating effect, it is further to note that after these three component combinations, the entirety for being formed adds
The diameter of hot device is identical, more consistent so as to be electric current travel path wherein, with ensure each position heating effect all
It is identical, uniformity of the lifting to silicon ingot heating.
The embodiment of the present application provide the 8th kind of polycrystalline ingot furnace, be on the basis of above-mentioned 5th kind of polycrystalline ingot furnace,
Also include following technical characteristic：
The heat preservation component is shaped as octagon.
It should be noted that using this octagonal heat preservation component, it becomes possible to preferably with octagonal heater phase
Matching, realizes more preferable heat insulation effect.
The embodiment of the present application provide the 9th kind of polycrystalline ingot furnace, be on the basis of above-mentioned 8th kind of polycrystalline ingot furnace,
Also include following technical characteristic：
The heat preservation component includes the straight flange insulation quilt and arm of angle insulation quilt of detachable connection.
It should be noted that heat preservation component is set to detachable, it is also possible to convenient maintenance, maintenance cost is reduced, only
Need to will appear from a part of part replacement of problem.
The tenth kind of polycrystalline ingot furnace that the embodiment of the present application is provided, be it is above-mentioned the first in the 4th kind of polycrystalline ingot furnace
On the basis of any one, also including following technical characteristic：
The heater is graphite heater or CFC heaters.
It should be noted that both materials ensure that heating effect evenly.
In sum, above-mentioned polycrystalline ingot furnace solves GT, brilliant contains etc. most of because of the polycrystalline ingot furnace of limitations
G6 thermal fields are may be only available for, and the technical bottleneck of G7 thermal fields and ingot casting can not be developed, it is not necessary to reforming equipment, only change thermal field machine
Structure is designed, it is possible to increase single stove ingot casting production capacity, improve production efficiency and silicon chip volume recovery, and technological design is simple, convenient and easy
Grasp, save human cost and time cost.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or uses the present invention.
Various modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The scope most wide for causing.
Claims (10)
1. a kind of polycrystalline ingot furnace, including the crucible in body of heater is arranged at, the peripheral part of the crucible is provided with backplate, the shield
The periphery of plate is surrounded with heat preservation component around having heaters, the periphery of the heater, it is characterised in that the section of the crucible
Including apart from one another by set four sides long and four short sides, wherein, it is described long while for linear pattern, and the side long length
Not less than the default integral multiple of the square length of side formed after ingot casting evolution, the short side is in two parallel to the long side direction
The length of projection is not less than the square length of side formed after ingot casting evolution.
2. polycrystalline ingot furnace according to claim 1, it is characterised in that the length on the side long is formed not less than after evolution
5 times of the square length of side.
3. polycrystalline ingot furnace according to claim 2, it is characterised in that the short side is linear pattern side.
4. polycrystalline ingot furnace according to claim 3, it is characterised in that the folder formed between the short side and the side long
Angle is 45 °.
5. the polycrystalline ingot furnace according to claim any one of 1-4, it is characterised in that the heater is shaped as eight sides
Shape.
6. polycrystalline ingot furnace according to claim 5, it is characterised in that the heater includes the straight of detachable connection
Side heater block and arm of angle heater block.
7. polycrystalline ingot furnace according to claim 6, it is characterised in that the straight flange heater block and the arm of angle are heated
Part is attached using arm of angle connecting plate.
8. polycrystalline ingot furnace according to claim 5, it is characterised in that the heat preservation component is shaped as octagon.
9. polycrystalline ingot furnace according to claim 8, it is characterised in that the heat preservation component includes detachable connection
Straight flange insulation quilt and arm of angle insulation quilt.
10. the polycrystalline ingot furnace according to claim any one of 1-4, it is characterised in that the heater is graphite heating
Device or CFC heaters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710149783.3A CN106702485A (en) | 2017-03-14 | 2017-03-14 | Polycrystal ingot furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710149783.3A CN106702485A (en) | 2017-03-14 | 2017-03-14 | Polycrystal ingot furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106702485A true CN106702485A (en) | 2017-05-24 |
Family
ID=58918148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710149783.3A Pending CN106702485A (en) | 2017-03-14 | 2017-03-14 | Polycrystal ingot furnace |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107227491A (en) * | 2017-07-05 | 2017-10-03 | 镇江仁德新能源科技有限公司 | A kind of polygon ingot casting and the polycrystalline silicon ingot or purifying furnace for manufacturing polygon ingot casting |
| CN107326436A (en) * | 2017-07-25 | 2017-11-07 | 扬州续笙新能源科技有限公司 | A kind of ingot furnace for improving the average conversion efficiency of silicon ingot |
| CN107385509A (en) * | 2017-07-21 | 2017-11-24 | 江西中材太阳能新材料有限公司 | Polycrystalline silicon ingot casting and ingot single crystal crucible |
| CN107829136A (en) * | 2017-12-21 | 2018-03-23 | 江西旭阳雷迪高科技股份有限公司 | A kind of Edge Heating system of quasi- G7 ingot castings thermal field |
| CN108060455A (en) * | 2017-12-21 | 2018-05-22 | 江西旭阳雷迪高科技股份有限公司 | A kind of crucible guard boards of quasi- G7 ingot castings thermal field |
| CN109853035A (en) * | 2019-04-19 | 2019-06-07 | 晶科能源有限公司 | Crucible and the polycrystalline silicon ingot casting method for using the crucible |
| CN110016716A (en) * | 2018-01-09 | 2019-07-16 | 上海东洋炭素有限公司 | A kind of polygon polycrystalline silicon ingot casting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107227491A (en) * | 2017-07-05 | 2017-10-03 | 镇江仁德新能源科技有限公司 | A kind of polygon ingot casting and the polycrystalline silicon ingot or purifying furnace for manufacturing polygon ingot casting |
| CN107385509A (en) * | 2017-07-21 | 2017-11-24 | 江西中材太阳能新材料有限公司 | Polycrystalline silicon ingot casting and ingot single crystal crucible |
| CN107326436A (en) * | 2017-07-25 | 2017-11-07 | 扬州续笙新能源科技有限公司 | A kind of ingot furnace for improving the average conversion efficiency of silicon ingot |
| CN107829136A (en) * | 2017-12-21 | 2018-03-23 | 江西旭阳雷迪高科技股份有限公司 | A kind of Edge Heating system of quasi- G7 ingot castings thermal field |
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| CN110016716A (en) * | 2018-01-09 | 2019-07-16 | 上海东洋炭素有限公司 | A kind of polygon polycrystalline silicon ingot casting device |
| CN109853035A (en) * | 2019-04-19 | 2019-06-07 | 晶科能源有限公司 | Crucible and the polycrystalline silicon ingot casting method for using the crucible |
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Application publication date: 20170524 |
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| RJ01 | Rejection of invention patent application after publication |