CN107746960A - A kind of method that aluminium and silver are reclaimed from photovoltaic module - Google Patents
A kind of method that aluminium and silver are reclaimed from photovoltaic module Download PDFInfo
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- CN107746960A CN107746960A CN201711216507.0A CN201711216507A CN107746960A CN 107746960 A CN107746960 A CN 107746960A CN 201711216507 A CN201711216507 A CN 201711216507A CN 107746960 A CN107746960 A CN 107746960A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
- C22B7/007—Wet processes by acid leaching
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B11/00—Obtaining noble metals
- C22B11/04—Obtaining noble metals by wet processes
- C22B11/042—Recovery of noble metals from waste materials
- C22B11/046—Recovery of noble metals from waste materials from manufactured products, e.g. from printed circuit boards, from photographic films, paper or baths
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B21/00—Obtaining aluminium
- C22B21/0015—Obtaining aluminium by wet processes
- C22B21/0023—Obtaining aluminium by wet processes from waste materials
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/06—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions
- C22B3/065—Nitric acids or salts thereof
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/06—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions
- C22B3/10—Hydrochloric acid, other halogenated acids or salts thereof
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
The invention discloses a kind of method that aluminium and silver are reclaimed from photovoltaic module, including step：S1, photovoltaic module is disassembled, obtain solar battery sheet therein；S2, solar battery sheet is inserted in hydrochloric acid solution and reacted, dissolve the aluminium in solar battery sheet, acquisition includes Al3+Reaction solution；S3, to including Al3+Reaction solution add NaOH reacted, filter and reclaim reaction generation Al (OH)3Sediment；S4, solar battery sheet is inserted in salpeter solution and reacted, acquisition includes Ag+Reaction solution；S5, to including Ag+Reaction solution add Na2S reagents are reacted, and are filtered and are reclaimed the Ag of reaction generation2S sediments；S6, by Ag2S sediments are mixed with carbon, are obtained mixture, calcination mixture, are obtained elemental silver.This method can reclaim aluminium and silver in photovoltaic module with inexpensive and simple step, but also the materials such as glass, backboard and the EVA layer of the former physicochemical characteristic of reservation can be reclaimed, and be sufficiently used the surplus value of waste and old photovoltaic module.
Description
Technical field
The present invention relates to solar-photovoltaic technology field, especially a kind of method that aluminium and silver are reclaimed from photovoltaic module.
Background technology
With the shortage of global energy and warming for weather, the development of the regenerative resource such as solar energy is more and more rapider.And
Generally calculated with the service life of current photovoltaic module over about 25 years, in 20 years of future, China there will be large quantities of light
Lie prostrate component aging expire.Accordingly, it is considered to the huge installation amount in the current country, to the silver in waste and old photovoltaic module and aluminium etc.
The raw material for possessing higher-value are reclaimed, and have great meaning.
The method majority of raw material of the photovoltaic module of industry recovery at present is：First pass through the side for removing photovoltaic module by hand
Frame, then glass and EVA are peeled off the methods of dissolved by organic acid, separate solar battery sheet.Wherein, acid solution can break ring
EVA physico-chemical property, it is not used to aging characteristics test and research, and easily cause secondary pollution.And wherein separate
The solar battery sheet gone out is typically by being immersed in acid solution, with band zinc, iron and aluminum ions go back original reagent to being dissolved in acid solution
Silver ion reduced, the percent reduction of this method is relatively low, generally only 60%~70% percent reduction, substantial amounts of raw material
Silver is not recycled, and needs to consume other metals and acid reaction, adds extra cost.Separately there is sub-fraction side
Case substitutes traditional metal deoxidization by introducing boron hydracid sodium, and this reducing agent reproducibility is stronger, is reduced under certain acidity
Rate can reach 96%, but the cost of the program is high, be only suitable for the recovery scene of small lot.
The content of the invention
In view of this, it is an object of the invention to provide a kind of method that aluminium and silver are reclaimed from photovoltaic module, to solve
Above mentioned problem.
In order to realize above-mentioned purpose, present invention employs following technical scheme：
A kind of method that aluminium and silver are reclaimed from photovoltaic module, including step：S1, photovoltaic module is disassembled, obtained therein
Solar battery sheet；S2, the solar battery sheet is inserted in hydrochloric acid solution and reacted, dissolved in the solar battery sheet
Aluminium, acquisition include Al3+Reaction solution；S3, to described include Al3+Reaction solution add NaOH reacted, filtering simultaneously
The Al (OH) of recovery reaction generation3Sediment；S4, the solar battery sheet is inserted in salpeter solution and reacted, described in dissolving
Silver in solar battery sheet, acquisition include Ag+Reaction solution；S5, to described include Ag+Reaction solution add Na2S is tried
Agent is reacted, and is filtered and is reclaimed the Ag of reaction generation2S sediments；S6, by the Ag2S sediments are mixed with carbon, are obtained
Mixture is obtained, mixture described in calcination, obtains elemental silver.
Preferably, in the step S1, the frame and encapsulating material of the photovoltaic module are removed first, is then being heated
Under the conditions of cut the photovoltaic module, separate backboard, glass plate, solar battery sheet and the EVA layer of the photovoltaic module, obtain
Take solar battery sheet therein.
Preferably, in the step S2, the mass fraction of the hydrochloric acid solution is 15%~25%.
Preferably, the step S3 is specifically included：Include Al to described3+Reaction solution add NaOH reacted, obtain
Al (OH) must be included3The reaction solution of sediment, to including Al (OH)3The reaction solution of sediment first carries out staticly settling place
Reason, then takes its supernatant, and NaOH is added into the supernatant and has seen whether white precipitate generation, in this way, then continue to
It is described to include Al3+Reaction solution add NaOH reacted, if not, performing the step S4.
Preferably, in the step S4, the mass fraction of the salpeter solution is 25%~35%.
Preferably, the step S5 is specifically included：Include Ag to described+Reaction solution add Na2S reagents carry out anti-
Should, acquisition includes Ag2The reaction solution of S sediments, to including Ag2The reaction solution of S sediments first carries out staticly settling processing,
Its supernatant is taken again, and Na is added into the supernatant2S reagents have simultaneously seen whether black precipitate generation, in this way, then continue
Include Ag to described+Reaction solution add Na2S reagents are reacted, if not, performing the step S6.
Preferably, in the step S6, by the Ag2S sediments are with carbon with 1:1 ratio is mixed.
Preferably, in the step S6, with the temperature not less than 1100 degrees Celsius, to described mixture calcination at least seven
Hour.
Preferably, in the step S6, also anhydrous Na is added into the mixture2CO3。
Preferably, the Ag2S sediments, anhydrous Na2CO3With carbon with 10:5:4 ratio is mixed.
A kind of method that aluminium and silver are reclaimed from photovoltaic module provided by the invention, not only with cheap cost and simply
The step of realize the recovery of aluminium in photovoltaic module and silver, moreover, this method can also retain glass, backboard and EVA layer
On the premise of original physicochemical characteristic, the raw material such as glass, backboard and EVA layer are reclaimed so that waste and old photovoltaic module remains
Remaining value is fully utilized.
Brief description of the drawings
Fig. 1 is a kind of flow chart of method that aluminium and silver are reclaimed from photovoltaic module provided in an embodiment of the present invention.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the accompanying drawings to the specific reality of the present invention
The mode of applying is described in detail.The example of these preferred embodiments is illustrated in the accompanying drawings.Shown in accompanying drawing and according to
What the embodiments of the present invention of accompanying drawing description were merely exemplary, and the present invention is not limited to these embodiments.
Here, it should also be noted that, in order to avoid having obscured the present invention because of unnecessary details, in the accompanying drawings only
It illustrate only with according to the solution of the present invention closely related structure and/or processing step, and eliminating little other of relation
Details.
As shown in fig.1, a kind of method that aluminium and silver are reclaimed from photovoltaic module is present embodiments provided, can be with cheap
Cost and simple step realize the recovery of aluminium in photovoltaic module and silver.
A kind of method that aluminium and silver are reclaimed from photovoltaic module, including step：S1, photovoltaic module is disassembled, obtained therein
Solar battery sheet.
Specifically, in the step S1, the frame and encapsulating material of the photovoltaic module are removed first, is then being heated
Under the conditions of cut the photovoltaic module, separate backboard, glass plate, solar battery sheet and the EVA layer of the photovoltaic module, obtain
Take solar battery sheet therein.
Wherein, there is aluminum metal edge frame because photovoltaic module is standing, carrying out the backboard of the photovoltaic module, glass, too
It is positive first manual removal and can to reclaim the metal edge frame of the photovoltaic module, then can adopt before the separation of cell piece and EVA layer
The encapsulating material of the photovoltaic module is removed with instruments such as blades, then recovery is entered to the encapsulating material.Wherein, the metal
Burn-in test is may be incorporated for after frame and encapsulating material recovery, by studying the raw material such as metal edge frame and encapsulating material
Aging characteristics, can be that the scheme for finding the service life for extending photovoltaic module contributes.Similarly, the photovoltaic module
Reclaimed after the equally separation of backboard, glass plate and EVA layer, available for burn-in test.Moreover, the present embodiment offer is described from light
The method that aluminium and silver are reclaimed in component is lied prostrate, the former materials such as above-mentioned glass, backboard and EVA layer, frame and encapsulating material can be retained
Original physicochemical characteristic of material, can be directly used for burn-in test.
Exemplarily, in the step S1, after the frame and encapsulating material that remove the photovoltaic module, as a kind of real
Mode is applied, by the glass of the photovoltaic module towards heating surface, the photovoltaic module is heated, then pass through high-speed mobile
Fine wire or the cutting member such as cutter cut the photovoltaic module, with separate the backboard of the photovoltaic module, glass,
Solar battery sheet and EVA layer.And another embodiment is used as, first heat cutting member, then with cutting under the condition of high temperature
Cutter member cuts the photovoltaic module, to separate the backboard of the photovoltaic module, glass, solar battery sheet and EVA layer.
S2, the solar battery sheet is inserted in hydrochloric acid solution and reacted, dissolve the aluminium in the solar battery sheet,
Acquisition includes Al3+Reaction solution.
Specifically, in the step S2, the mass fraction of the hydrochloric acid solution is 15%~25%.In the present embodiment,
The step S2 preferably use mass fraction for 20% hydrochloric acid solution.
The reaction equation being related in the step S2 is 2Al+6HCl=2AlCl3+3H2↑.Wherein, the solar-electricity
Aluminium and hydrochloric acid reaction in the piece of pond, aluminium chloride and hydrogen are generated, therefore after reaction produces to bubble-free, it that is to say without new hydrogen
Gas produces, it is believed that reaction finishes, from containing Al3+Reaction solution in take out the solar battery sheet.
S3, to described include Al3+Reaction solution add NaOH reacted, filter and reclaim reaction generation Al
(OH)3Sediment.
In the present embodiment, the step S3 is specifically included：Include Al to described3+Reaction solution add NaOH carry out it is anti-
Should, acquisition includes Al (OH)3The reaction solution of sediment, to including Al (OH)3The reaction solution of sediment, which first carries out standing, to sink
Shallow lake is handled, then takes its supernatant, and NaOH is added into the supernatant and has seen whether that white precipitate that is to say Al (OH)3
Sediment generates, and in this way, then continues to include Al to described3+Reaction solution add NaOH reacted, if not, perform described in
Step S4.
More specifically, in the step S3, including Al to described3+Reaction solution add NaOH when being reacted, need
Reaction solution is stirred to accelerate reaction rate.Acquisition includes Al (OH)3After the reaction solution of sediment, it is necessary to bag
Contain Al (OH)3The reaction solution of sediment first carries out staticly settling processing at least 24 hours.
Wherein, the present embodiment by the aluminium in photovoltaic module with Al (OH)3The form of sediment is reclaimed, actual to carry out
When reclaiming operation, the Al (OH) obtained can will be reclaimed3Sediment is reduced to aluminium simple substance by further reacting.
The reaction equation being related in the step S3 is AlCl3+ 3NaOH=Al (OH)3↓+3NaCl.Wherein, the bag
Contain Al3+Reaction solution in aluminium chloride and sodium hydroxide react, generate sodium chloride and white precipitate aluminium hydroxide, therefore ought be not
After there is new white precipitate, it is believed that reaction finishes, and filters and reclaims the aluminum hydroxide precipitate of generation.
S4, the solar battery sheet is inserted in salpeter solution and reacted, dissolve the silver in the solar battery sheet,
Acquisition includes Ag+Reaction solution.
Exemplarily, in the step S4, the mass fraction of the salpeter solution is 25%~35%.In the present embodiment
In, the step S4 preferably use mass fraction for 30% salpeter solution.
Specifically, in the step S4, by the solar battery sheet insert in salpeter solution react before, first spend from
Sub- water cleans the solar battery sheet, until the solar battery sheet is in neutrality.In the present embodiment, by using PH
Whether whether test paper examines the solar battery sheet, be 7 to judge the solar battery sheet in neutrality with pH value.
In the present embodiment, the solar battery sheet is inserted in salpeter solution and soaked at least 30 minutes, so that described
Silver in solar battery sheet is completely dissolved.
The reaction equation being related in the step S4 is 3Ag+4HNO3=3AgNO3+NO↑+2H2O.Wherein, it is described too
Silver in positive energy cell piece reacts with salpeter solution, generation silver nitrate, nitric oxide and water, the silver-colored collection in solar battery sheet
In on its electrode, therefore after the silver electrode in the solar battery sheet is completely dissolved, it is believed that reaction finishes, and takes out institute
State solar battery sheet.
S5, to described include Ag+Reaction solution add Na2S reagents are reacted, and are filtered and are reclaimed reaction generation
Ag2S sediments.
In the present embodiment, the step S5 is specifically included：Include Ag to described+Reaction solution add Na2S reagents are carried out
Reaction, acquisition include Ag2The reaction solution of S sediments, to including Ag2The reaction solution of S sediments first carries out staticly settling place
Reason, then its supernatant is taken, add Na into the supernatant2S reagents have simultaneously seen whether that black precipitate that is to say Ag2S is precipitated
Thing generates, and in this way, then continues to include Ag to described+Reaction solution add Na2S reagents are reacted, if not, described in performing
Step S6.
More specifically, in the step S5, including Ag to described+Reaction solution add Na2S reagents are reacted
When, it is necessary to constantly be stirred reaction solution to accelerate reaction rate.Acquisition includes Ag2After the reaction solution of S sediments, need
Will be to including Ag2The reaction solution of S sediments first carries out staticly settling processing at least 24 hours.
Exemplarily, the present embodiment is filtered under diminished pressure using Buchner funnel to the reacted solution of step S5, with
Reclaim the Ag2S sediments.
The reaction equation being related in the step S5 is Na2S+2AgNO3=Ag2S↓+NaNO3.Wherein, it is described to include
There is Ag+Reaction solution in silver nitrate and sodium sulfide reagent react, generate sodium nitrate and black precipitate silver sulfide, therefore ought not go out
After now new black precipitate, it is believed that reaction finishes, and filters and reclaims the silver sulfide precipitation of generation.
S6, by the Ag2S sediments are mixed with carbon, are obtained mixture, mixture described in calcination, are obtained simple substance
Silver.
Specifically, in the step S6, by the Ag2S sediments are with carbon with 1:1 ratio is mixed.
Specifically, in the step S6, with the temperature not less than 1100 degrees Celsius, to described mixture calcination at least seven
Hour.
Further, in the step S6, also anhydrous Na is added into the mixture2CO3.Wherein, it is described anhydrous
Na2CO3Play a part of catalyst, to accelerate reaction rate.
Further, the Ag2S sediments, anhydrous Na2CO3With carbon with 10:5:4 ratio is mixed.
More specifically, in the step S6, first to the Ag of step S5 acquisitions2S sediments are washed, done successively
Dry and calcination processing, obtains dry Ag2S sediments；Treat the Ag2After the cooling of S sediments, the Ag is crushed2S sediments,
Obtain Ag2S powder；Wherein, the carbon selects charcoal powder, by the Ag2S powder, anhydrous Na2CO3And charcoal powder is with 10：5：
4 ratio is mixed, and obtains mixture；The mixture is inserted in crucible, with the temperature not less than 1100 degrees Celsius,
To the mixture at least 7 hours of calcination, wherein, charcoal powder can be continuously added during the calcination, to promote reaction speed
Degree；Treat that calcination finishes, the elemental silver now melted is located at the bottom of crucible, and the upper strata of crucible is the impurity in solid, by earthenware
Product in crucible pours out while hot, isolates elemental silver and carries out cooling treatment, can obtain elemental silver of the purity more than 99%.
The reaction equation being related in the step S6 is Ag2S+C+2O2=2Ag+SO2+CO2.Wherein, the silver sulfide
Powder and the oxygen reaction in charcoal powder and air, generation elemental silver, sulfur dioxide and carbon dioxide.
In summary, the above-mentioned method that aluminium and silver are reclaimed from photovoltaic module that the present embodiment provides, not only with cheap
Cost and simple step realize the recovery of aluminium in photovoltaic module and silver, moreover, this method can also retain glass,
On the premise of original physicochemical characteristic of the material such as backboard and EVA layer, the raw material such as glass, backboard and EVA layer are reclaimed,
So that the waste and old remaining value of photovoltaic module is fully utilized.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply between these entities or operation
Any this actual relation or order be present.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Cover including for nonexcludability, so that process, method, article or equipment including a series of elements not only include that
A little key elements, but also the other element including being not expressly set out, or also include for this process, method, article or
The intrinsic key element of equipment.In the absence of more restrictions, the key element limited by sentence "including a ...", not
Other identical element in the process including the key element, method, article or equipment also be present in exclusion.
Described above is only the embodiment of the application, it is noted that for the ordinary skill people of the art
For member, on the premise of the application principle is not departed from, some improvements and modifications can also be made, these improvements and modifications
It should be regarded as the protection domain of the application.
Claims (10)
- A kind of 1. method that aluminium and silver are reclaimed from photovoltaic module, it is characterised in that including step：S1, photovoltaic module is disassembled, obtain solar battery sheet therein；S2, the solar battery sheet is inserted in hydrochloric acid solution and reacted, dissolved the aluminium in the solar battery sheet, wrapped Contain Al3+Reaction solution；S3, to described include Al3+Reaction solution add NaOH reacted, filter and reclaim reaction generation Al (OH)3It is heavy Starch；S4, the solar battery sheet is inserted in salpeter solution and reacted, dissolved the silver in the solar battery sheet, wrapped Contain Ag+Reaction solution；S5, to described include Ag+Reaction solution add Na2S reagents are reacted, and are filtered and are reclaimed the Ag of reaction generation2S sinks Starch；S6, by the Ag2S sediments are mixed with carbon, are obtained mixture, mixture described in calcination, are obtained elemental silver.
- 2. the method according to claim 1 that aluminium and silver are reclaimed from photovoltaic module, it is characterised in that the step S1 In, the frame and encapsulating material of the photovoltaic module are removed first, then cuts the photovoltaic module in a heated condition, are separated Backboard, glass plate, solar battery sheet and the EVA layer of the photovoltaic module, obtain solar battery sheet therein.
- 3. the method according to claim 1 that aluminium and silver are reclaimed from photovoltaic module, it is characterised in that the step S2 In, the mass fraction of the hydrochloric acid solution is 15%~25%.
- 4. the method that aluminium and silver are reclaimed from photovoltaic module according to claim 1 or 3, it is characterised in that the step S3 is specifically included：Include Al to described3+Reaction solution add NaOH reacted, acquisition include Al (OH)3Sediment Reaction solution, to including Al (OH)3The reaction solution of precipitation first carries out staticly settling processing, then takes its supernatant, to the supernatant NaOH is added in liquid and has seen whether white precipitate generation, in this way, then continues to include Al to described3+Reaction solution add NaOH is reacted, if not, performing the step S4.
- 5. the method according to claim 1 that aluminium and silver are reclaimed from photovoltaic module, it is characterised in that the step S4 In, the mass fraction of the salpeter solution is 25%~35%.
- 6. the method for aluminium and silver is reclaimed from photovoltaic module according to claim 1 or 5, it is characterised in that the step S5 is specifically included：Include Ag to described+Reaction solution add Na2S reagents are reacted, and acquisition includes Ag2S sediments Reaction solution, to including Ag2The reaction solution of S sediments first carries out staticly settling processing, then takes its supernatant, to the supernatant Middle addition Na2S reagents have simultaneously seen whether black precipitate generation, in this way, then continue to include Ag to described+Reaction solution add Na2S reagents are reacted, if not, performing the step S6.
- 7. the method according to claim 1 that aluminium and silver are reclaimed from photovoltaic module, it is characterised in that the step S6 In, by the Ag2S sediments are with carbon with 1:1 ratio is mixed.
- 8. the method that aluminium and silver are reclaimed from photovoltaic module according to claim 1 or 7, it is characterised in that the step In S6, with the temperature not less than 1100 degrees Celsius, to mixture calcination at least seven hour.
- 9. the method for the aluminium and silver in recovery photovoltaic module according to claim 8, it is characterised in that the step S6 In, also add anhydrous Na into the mixture2CO3。
- 10. the method for the aluminium and silver in recovery photovoltaic module according to claim 9, it is characterised in that the Ag2S is precipitated Thing, anhydrous Na2CO3With carbon with 10:5:4 ratio is mixed.
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| CN109295468A (en) * | 2018-10-15 | 2019-02-01 | 南京师范大学 | The method for going desilver to become rusty using double-chamber microbiological fuel cell |
| CN110743893A (en) * | 2018-07-23 | 2020-02-04 | 荆门市格林美新材料有限公司 | Method for recovering crystalline silicon photovoltaic material |
| CN111570485A (en) * | 2020-05-28 | 2020-08-25 | 王小娟 | Optical mirror processing device |
| CN113578848A (en) * | 2021-09-30 | 2021-11-02 | 晶科能源(海宁)有限公司 | Cleaning device for recovering solar cell fragments |
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| CN111570485A (en) * | 2020-05-28 | 2020-08-25 | 王小娟 | Optical mirror processing device |
| CN113578848A (en) * | 2021-09-30 | 2021-11-02 | 晶科能源(海宁)有限公司 | Cleaning device for recovering solar cell fragments |
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Application publication date: 20180302 |