CN102229428A - Leakage-proof manufacturing technology for smelting extra large crucible by using photovoltaic silicon - Google Patents
Leakage-proof manufacturing technology for smelting extra large crucible by using photovoltaic silicon Download PDFInfo
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- CN102229428A CN102229428A CN2011101233965A CN201110123396A CN102229428A CN 102229428 A CN102229428 A CN 102229428A CN 2011101233965 A CN2011101233965 A CN 2011101233965A CN 201110123396 A CN201110123396 A CN 201110123396A CN 102229428 A CN102229428 A CN 102229428A
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Abstract
The invention discloses a leakage-proof manufacturing technology for smelting an extra large crucible by photovoltaic silicon. The technology comprises the following steps of: manufacturing a combined crucible by adopting a graphite assembly, wherein screw threads are arranged on a combined crucible interface; adding a material called standard electrode paste in gaps among screw threads; placing the crucible into an electric sintering furnace after the crucible is assembled; and heating at a high temperature to about 1500 DEG C so that the electrode paste and the inner wall of a crucible graphite are fused and fixed together. The crucible smelted with photovoltaic silicon by adopting the method has large caliber reaching 1.0-1.2 meters at most, high capacity enlarged by 3 times and possesses high-temperature resistant and leakage-proof effects.
Description
Technical field
The present invention relates to photovoltaic silicon field of smelting, particularly a kind of photovoltaic silicon is smelted the leakproof complete processing of super large crucible.
Technical background
A large amount of exploitations of whole world fossil energy are the one of the main reasons that causes ecological damage, a large amount of uses of fossil energy then are the major causes that causes global environmental pollution, correlative study shows, big area is used the solar energy power generating electric energy, can effectively reduce emission of carbon-dioxide, reduce Greenhouse effect, change terrestrial climate.Photovoltaic industry is all being greatly developed in countries in the world, and as the main raw material(s) of photovoltaic industry, the demand blowout formula thereupon of photovoltaic silicon increases.The production of photovoltaic silicon at present mainly is to adopt plumbago crucible to smelt, but the bore of plumbago crucible is all smaller now, generally is the diameter of 0.5-0.58 rice, and production capacity is limited, and work-ing life is short; Big crucible all is to adopt assembling mode, and joint face has the slit, and seepage causes the burner hearth loss easily, and refining silicon temperature is generally 700-800 ℃, but big crucible adhesive glue generally can only bear 400 ℃.Therefore prepare high temperature resistant, non-leakage super large plumbago crucible and become an important difficult problem that solves the smelting of photovoltaic silicon.
Summary of the invention
In order to solve above-mentioned deficiency of the prior art, the leakproof complete processing that the purpose of this invention is to provide super large crucible in a kind of photovoltaic silicon smelting, prepare large-scale crucible, and adopt the photovoltaic silicon of this method preparation to smelt crucible, crucible bore maximum can reach 1.0-1.2 rice, production capacity enlarges 3 times, has high temperature resistant, non-leakage effect.
In order to realize above-mentioned goal of the invention, technical scheme of the present invention realizes in the following way: a kind of photovoltaic silicon is smelted super large crucible leakproof complete processing, adopt graphite components to make combined type copple, it is characterized in that the combined type copple component interface adopts the screw thread screw thread, and in screw thread screw thread gap, add a kind of standard electrode paste material, after crucible assembles, crucible is put into the sintering electric furnace, about heat to 1500 ℃, allow electrode paste and crucible graphite inwall converged fixed;
Because adopted the physical connection mode of screw thread screw thread, the crucible of preparation is simple in structure, stable performance;
Owing to adopt electrode paste as matrix material, electrode paste itself can be high temperature resistant, thermal expansivity is little simultaneously, electrode paste has smaller specific resistance, can reduce the loss of electric energy, has less void content, can make the anodizing of heated condition slow, higher physical strength is arranged, just not reason machinery and electrical load influence many good characteristics such as electrode fracture, adopt the crucible of electrode paste as the jointing material preparation, wall body is in conjunction with the effect that closely can reach antiseep, and tolerable temperature reaches 2000 ℃ of high temperature simultaneously.
The invention will be further described below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is A of the present invention place enlarged view.
Annex among the figure: 1, stool, 2, crucible assembly, 3 screw thread screw threads, 4 electrode pastes.
Embodiment
For technique means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
As shown in Figure 1, the present invention is by adopting the graphite components array mode, the assembling crucible.Combination crucible interface adopts screw thread screw thread 2, adds the material that a kind of standard electrode is stuck with paste in thread pitch, after crucible assembles, crucible is put into the sintering electric furnace, about heat to 1500 ℃, allows electrode paste and crucible graphite inwall converged fixed.
At first adopt the ordinary method manufacturing to make up big plumbago crucible assembly, target product is divided into 5-8 module, module is being carried out the processing of respective threads screw thread, and then the assembling crucible assembly; The cylinder paste electrode that at first with softening temperature is 63 ℃ is stuck with paste the screw thread groove of packing into, buckles screw thread then, stays the 2-3MM slit approximately, is put in the electric furnace, is heated to beginning and the fusion of crucible graphite inwall about 1500 ℃, reaches the effect of antiseep.Specific embodiment (one) preparation bore is 1.1M, external diameter is 1.15M, height is that the photovoltaic silicon of 1.8M is smelted plumbago crucible, referring to plumbago crucible structure shown in Figure 1, adopting internal diameter of machining process preparation is 1.1M, high for the stool 1 of 400MM and 4 internal diameters are 1.1M, height is the crucible assembly 2 of 400MM; Then respectively at the upper end of stool 1 and the dark screw thread screw thread 3 of the processing 50MM of two ends up and down of crucible assembly 2.With softening temperature is that 63 ℃ electrode paste is filled the screw thread groove, buckles screw thread then, stays the 2-3MM slit approximately, is put in the electric furnace, is heated to about 1500 ℃ cooling then 30 minutes.Experimental results show that the plumbago crucible of this prepared has overcome the embarrassment of monkey, have simultaneously high temperature resistant, the effect of antiseep.
More than show and described ultimate principle of the present invention, principal character and advantage.The technician of the industry should understand, and the present invention is not restricted to the described embodiments.That describes in the foregoing description and the specification sheets just illustrates principle of the present invention; under the premise without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications; these changes and improvements all fall in the claimed scope of the invention, and the claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (2)
1. photovoltaic silicon is smelted the leakproof complete processing of super large crucible, it is characterized in that: mainly by stool (1), a plurality of crucible assemblies (2), screw thread screw thread (3) and electrode paste (4) are assembled into super large leakproof crucible, all there is screw thread screw thread (3) at crucible assembly (2) two ends, after 2 groups of screw thread screw threads (3) assembling, the gap of 2-3MM are arranged wherein up and down, this gap is used for filling electrode paste, reaches leak preventing effect.
2. the leakproof complete processing that photovoltaic silicon according to claim 1 is smelted the super large crucible adopts the screw thread screwed connection, it is characterized in that: in screw thread screw thread groove, add electrode paste material, and put into 1500 ℃ of high temperature electric sintering furnaces and heat, allow electrode paste and crucible graphite inwall converged fixed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101233965A CN102229428A (en) | 2011-05-13 | 2011-05-13 | Leakage-proof manufacturing technology for smelting extra large crucible by using photovoltaic silicon |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101233965A CN102229428A (en) | 2011-05-13 | 2011-05-13 | Leakage-proof manufacturing technology for smelting extra large crucible by using photovoltaic silicon |
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| CN102229428A true CN102229428A (en) | 2011-11-02 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103060922A (en) * | 2013-01-18 | 2013-04-24 | 奕雪春 | Volume-adjustable combined type crucible |
| CN104613760A (en) * | 2014-12-30 | 2015-05-13 | 朱兴发 | Large-diameter circular ring stacked high-purity graphite crucible for electromagnetic induction slag smelter |
| CN108374197A (en) * | 2018-02-26 | 2018-08-07 | 西安理工大学 | A kind of graphite crucible increasing growing silicon carbice crystals length |
| CN113528054A (en) * | 2021-07-15 | 2021-10-22 | 山西贝特瑞新能源科技有限公司 | Breathable conductive adhesive for lithium battery crucible and preparation method of breathable conductive adhesive |
| CN114001550A (en) * | 2021-09-24 | 2022-02-01 | 攀钢集团攀枝花钢铁研究院有限公司 | Smelting device and method for industrial smelting of vanadium-aluminum alloy |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101592440A (en) * | 2009-07-17 | 2009-12-02 | 龙岩市龙创硅业有限公司 | Leak-proof protection device of vacuum furnace, its prescription and preparation technology |
| CN101759183A (en) * | 2009-05-31 | 2010-06-30 | 江苏中能硅业科技发展有限公司 | Polysilicon reduction furnace |
| CN102020411A (en) * | 2009-09-15 | 2011-04-20 | 郭永强 | Induction heating type nonmetal smelting method and system used thereby |
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2011
- 2011-05-13 CN CN2011101233965A patent/CN102229428A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101759183A (en) * | 2009-05-31 | 2010-06-30 | 江苏中能硅业科技发展有限公司 | Polysilicon reduction furnace |
| CN101592440A (en) * | 2009-07-17 | 2009-12-02 | 龙岩市龙创硅业有限公司 | Leak-proof protection device of vacuum furnace, its prescription and preparation technology |
| CN102020411A (en) * | 2009-09-15 | 2011-04-20 | 郭永强 | Induction heating type nonmetal smelting method and system used thereby |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103060922A (en) * | 2013-01-18 | 2013-04-24 | 奕雪春 | Volume-adjustable combined type crucible |
| CN104613760A (en) * | 2014-12-30 | 2015-05-13 | 朱兴发 | Large-diameter circular ring stacked high-purity graphite crucible for electromagnetic induction slag smelter |
| CN108374197A (en) * | 2018-02-26 | 2018-08-07 | 西安理工大学 | A kind of graphite crucible increasing growing silicon carbice crystals length |
| CN113528054A (en) * | 2021-07-15 | 2021-10-22 | 山西贝特瑞新能源科技有限公司 | Breathable conductive adhesive for lithium battery crucible and preparation method of breathable conductive adhesive |
| CN114001550A (en) * | 2021-09-24 | 2022-02-01 | 攀钢集团攀枝花钢铁研究院有限公司 | Smelting device and method for industrial smelting of vanadium-aluminum alloy |
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Application publication date: 20111102 |