KR101873224B1 - Method for recycling waste lcd glass and application thereof - Google Patents
Method for recycling waste lcd glass and application thereof Download PDFInfo
- Publication number
- KR101873224B1 KR101873224B1 KR1020170025588A KR20170025588A KR101873224B1 KR 101873224 B1 KR101873224 B1 KR 101873224B1 KR 1020170025588 A KR1020170025588 A KR 1020170025588A KR 20170025588 A KR20170025588 A KR 20170025588A KR 101873224 B1 KR101873224 B1 KR 101873224B1
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- South Korea
- Prior art keywords
- glass
- waste lcd
- separating
- polarizing film
- recycling
- Prior art date
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- 239000011521 glass Substances 0.000 title claims abstract description 84
- 239000002699 waste material Substances 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000004064 recycling Methods 0.000 title claims abstract description 21
- 238000000926 separation method Methods 0.000 claims abstract description 16
- 239000000843 powder Substances 0.000 claims abstract description 14
- 238000010298 pulverizing process Methods 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims description 22
- 239000007788 liquid Substances 0.000 claims description 15
- 238000012216 screening Methods 0.000 claims description 12
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 4
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 3
- 239000012153 distilled water Substances 0.000 claims description 3
- 229960001484 edetic acid Drugs 0.000 claims description 3
- 239000004115 Sodium Silicate Substances 0.000 claims description 2
- 150000004686 pentahydrates Chemical class 0.000 claims description 2
- 235000019795 sodium metasilicate Nutrition 0.000 claims description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 239000003365 glass fiber Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 description 9
- 239000006063 cullet Substances 0.000 description 5
- 238000002386 leaching Methods 0.000 description 5
- 239000000835 fiber Substances 0.000 description 3
- 238000007670 refining Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000005388 borosilicate glass Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 238000003921 particle size analysis Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- OSSNTDFYBPYIEC-UHFFFAOYSA-N 1-ethenylimidazole Chemical compound C=CN1C=CN=C1 OSSNTDFYBPYIEC-UHFFFAOYSA-N 0.000 description 1
- IZXIZTKNFFYFOF-UHFFFAOYSA-N 2-Oxazolidone Chemical compound O=C1NCCO1 IZXIZTKNFFYFOF-UHFFFAOYSA-N 0.000 description 1
- KEZYHIPQRGTUDU-UHFFFAOYSA-N 2-[dithiocarboxy(methyl)amino]acetic acid Chemical compound SC(=S)N(C)CC(O)=O KEZYHIPQRGTUDU-UHFFFAOYSA-N 0.000 description 1
- JYCQQPHGFMYQCF-UHFFFAOYSA-N 4-tert-Octylphenol monoethoxylate Chemical compound CC(C)(C)CC(C)(C)C1=CC=C(OCCO)C=C1 JYCQQPHGFMYQCF-UHFFFAOYSA-N 0.000 description 1
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 description 1
- 150000001204 N-oxides Chemical class 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 1
- 239000005407 aluminoborosilicate glass Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000008393 encapsulating agent Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229950004053 octoxinol Drugs 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 229920002006 poly(N-vinylimidazole) polymer Polymers 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010187 selection method Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C7/00—Crushing or disintegrating by disc mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
- B07B13/04—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices according to size
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2203/00—Function characteristic
- G02F2203/68—Green display, e.g. recycling, reduction of harmful substances
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/20—Waste processing or separation
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/60—Glass recycling
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Food Science & Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Melting And Manufacturing (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
BACKGROUND OF THE
LCD glass is a high value added product manufactured through high-level quality control. LCD glass is divided into STN (Super-Twisted Nematic) and TFT, and the glass composition is different. Since STN glass substrates require flat surfaces due to the nature of the driving method, soda borosilicate glass with a strain point of 550 ° C or less suitable for LCD manufacturing processes is used. In addition, since the transparent conductive film is damaged by surface diffusion of alkali ions generated by alkali oxides such as Na 2 O and K 2 O, a silica protective film is first formed on the surface of the substrate glass. STN LCDs have been used in recent years because they are inexpensive to manufacture but are poor in color and appear only in the front. Currently, TFT LCDs are used in most LCDs. Alumino borosilicate glass, which has a high strain point and a low coefficient of thermal expansion, is used because soda-borosilicate glass can not satisfy TFT manufacturing process temperature.
In Korea, waste LCD glass is processed waste glass and used waste glass. The possibility of the waste LCD glass is extremely limited, and the initial composition is maintained, so that the difference in the chemical composition of the waste LCD itself is not large. In order to recycle waste LCD glass, it is necessary to develop uniformization of recycled glass and development of technologies for removing impurities (metal, organic materials, etc.). However, development of technologies related to waste display and LCD panel glass recycling in Korea is very insufficient, In fact, it is necessary to conduct research on the landfill.
The present invention provides a method of recycling a waste LCD glass performed by a method of applying a wet separation method to a waste LCD panel to separate a polarizing film and a glass and then recovering the separated glass. The present invention also provides a method for producing glass fiber using the glass powder obtained by micronizing the glass recovered by the above method.
The present invention provides a method of recycling a waste LCD glass comprising grinding a waste LCD panel and then wet-separating the polarizing film by mixing with a separating liquid, and then screening the glass.
Wherein the separating liquid comprises a composition for separating a polarizing film, wherein the composition for separating polarizing film comprises 5 to 15% by weight of ethylenediaminetetracetic acid based on 100% by weight of the total of the separating composition; 0.5 to 5% by weight of potassium hydroxide; 5 to 15% by weight of sodium metasilicate pentahydrate; 5 to 15% by weight of octoxinol; And a remaining amount of water. ≪ IMAGE >
The composition for separating polarizing film may further contain an inhibitor and the content thereof may be 2 to 12% by weight.
Wherein the inhibitor is at least one selected from the group consisting of polyvinyl oxazolidone, polyvinyl pyrrolidone, polyvinylimidazole polyamine N-oxide, and copolymers of N-vinylpyrrolidone and N-vinylimidazole But is not limited thereto.
Crushing of waste LCD panel
The waste LCD panel may be pulverized into a chip shape having a size of 10 to 50 mm, and more preferably a chip shape having a size of 20 to 30 mm. In consideration of the recycling treatment capacity and process efficiency, it is preferable to crush to the above-mentioned range.
When the waste LCD panel is recycled without being pulverized, it is difficult to remove the encapsulant, the efficiency of removing impurities may decrease, and the throughput of the recycling process may decrease.
Wet separation
The step of pulverizing the waste LCD panel and mixing the waste LCD panel may be performed by mixing the pulverized LCD panel with 100 g of the pulverized LCD panel per 500 to 2000 ml of the separated liquid.
The separation liquid may contain 5 to 50 v / v%, and more preferably 10 to 30 v / v%, of the composition for separating a polarizing film.
The separating liquid may be a form in which the separating composition is diluted with distilled water.
The wet separation may be carried out by pulverizing the waste LCD panel, charging it into the separation liquid, and then stirring at a temperature of 30 to 60 DEG C for 1 to 5 hours. More preferably at a temperature of 50 DEG C for 3 hours. In the case of a closed LCD panel, it is difficult to physically separate the glass because the glass and the film are adhered to each other. When performing the wet separation in the temperature and time range, the glass and the polarizing film of the waste LCD panel can be easily separated.
Glass selection
The step of screening the glass may be carried out by using a difference in size of the mixture. At this time, the recyclable glass is recovered and the separated polarizing film is discarded.
Separation is essential for separating the mixture, and it is necessary to select it by using specific gravity, physicochemical properties of the surface, magnetism, color and gloss, electrical conductivity, shape, hardness and ductility, thermal differentiation, friction coefficient, conductivity, thermal conductivity, flame resistance, Can be selected. The step of screening the glass can be performed by applying specific gravity screening, middle liquid screening, magnetic force screening, electrification screening, floating screening, color screening, spectroscopy or thermal adhesion. However, It is preferable to apply a selection method using
ITO leaching
The recycling method may further include an ITO leaching step. The ITO leaching step can be carried out using 3-5 moles of hydrochloric acid, sulfuric acid, nitric acid, or a mixed acid thereof or an oxidizing agent (H 2 O 2 ) (3 to 5 moles), preferably an oxidizing agent (H 2 O 2 ).
Undifferentiation
The recycling method may further include a glass sorting step or an undifferentation step after the ITO leaching step. The undifferentiation step can be performed using a disk mill, but is not limited thereto. The average particle size of the glass powder after the refining step may be about 400 탆. The undifferentiated glass powder can be used for the production of glass fibers, especially glass fiber.
In addition, the present invention can provide a method for producing glass fiber filaments using the undifferentiated glass powder recovered by the above method. The production of glass fiber can be carried out by melting glass powder as a raw material and then making it into a fiber. The preparation in the form of fibers can be carried out through a nozzle, but not limited thereto, and all known methods used for producing glass fiber can be applied.
Further, the present invention can provide glass filaments prepared in the form of fibers after melting the undifferentiated glass powder recovered by the above method.
According to the present invention, glass can be recovered from a waste LCD panel at a high recovery rate by applying a wet separation method using a polarizing film separating liquid having an excellent polarizing film separating effect. In addition, the glass recovered according to the present invention has a low foreign matter content and is advantageous in that it can be pulverized and recycled at a high added value.
1 schematically illustrates a recycling process of a waste LCD glass according to an embodiment of the present invention.
2A is a photograph showing a vibrating body (vibrating screen) applied to an embodiment of the present invention. 2B is a schematic view of the vibrating body (vibrating screen). 2C is a photograph showing a polarizing film (upper side) and a cullet (lower side) separated by the vibrating body (vibrating screen).
FIG. 3A is a photograph showing a disc mill applied to the refining step of glass recovered according to an embodiment of the present invention. FIG. FIG. 3B is a photograph showing glass fractions recovered after grinding with the disc mill.
FIG. 4 is a result of particle size analysis (average particle size of 400 μm) after pulverizing the recovered glass according to the recycling process of waste LCD glass according to an embodiment of the present invention.
Hereinafter, the present invention will be described in more detail with reference to Examples. The objects, features and advantages of the present invention will be readily understood through the following examples. The present invention is not limited to the embodiments described herein, but may be embodied in other forms. The embodiments described herein are provided to enable those skilled in the art to fully understand the spirit of the present invention. Therefore, the present invention should not be limited by the following examples.
The method of recycling the waste LCD glass according to an embodiment of the present invention may include the step of crushing the waste LCD panel, the step of separating the polarizing film using the separating liquid for separating the polarizing film, and the step of screening the glass . Further, it may further include an ITO leaching step and a glass refining step (see FIG. 1).
Example
100 g of the waste LCD panel separated in the waste display dismantling process was pulverized into chips having a size of about 25 to 30 mm and then 1000 ml of a polarizing film separator prepared by mixing the composition for separation made of the composition shown in Table 1 in distilled water 20 v / v%). Thereafter, the mixture was stirred at 50 DEG C for 3 hours to effect wet separation. The wet-separated solid phase mixture is composed of a polarizing film, a cullet and a glass fine powder. At this time, the separated polarizing film showed a size of about 10 mm to 30 mm, and the cullet showed a size of 10 mm or less. Using the size difference of the mixture, the vibrator was sorted to separate the cullet, the polarizing film and the glass fine powder, and the glass was recovered using a vibration screen (see FIG. 2).
Experimental Example 1: Analysis of glass recovery
The recovery rate of glass was calculated by measuring the weight of recovered glass compared to the input glass (waste glass). At this time, since the polarizing film is attached to the panel, the weight of the polarizing film recovered from the input amount is excluded. As a result, the recovery rates were 87.6%, 87.7%, 85.9%, 89.0% and 82.1%, respectively. The mean glass recovery rate of the glass recovery experiment conducted five times was 86.5%.
Experimental Example 2: Undifferentiation and particle size analysis of recovered glass
In order to understand the pulverization characteristics of the recovered glass cullet, glass pulverization was carried out using a disc mill. Disc mills are used for milling a variety of products in the commercialization process. The glass fine powder is supplied to the inside of the disk mill through the inlet of the disk mill. Inside the disk mill, the effect of pressure and frictional force is generated by the rotation of the grinding disk, and the pulverized material is recovered through the lower screen (see FIG. 3). The particle size distribution of the pulverized glass fine powder was analyzed using a disk mill, and the results are shown in FIG. As shown in Fig. 4, it was confirmed that the average particle size of the undifferentiated glass powder was 400 mu m.
Claims (12)
Wherein the separating liquid comprises a composition for separating a polarizing film,
The composition for separating polarizing film may further comprise:
On the basis of 100% by weight of the entire separating composition,
5 to 15% by weight of ethylene diamine tetraacetic acid;
0.5 to 5% by weight of potassium hydroxide;
5 to 15% by weight of sodium metasilicate · pentahydrate;
5 to 15% by weight of octocinol; And
A method of recycling a waste LCD glass, characterized in that it comprises residual water.
Wherein the waste LCD panel is pulverized into a chip shape having a size of 10 to 50 mm.
The method of recycling waste LCD glass according to claim 1, wherein the pulverized waste LCD panel is mixed with the separated liquid at a ratio of 100 g of pulverized waste LCD panel per 500 to 2000 ml of the separated liquid.
Wherein the separating liquid is a form in which the separating composition is diluted in distilled water.
Wherein the separation liquid comprises 5 to 50 v / v% of a composition for separating polarizing film.
Wherein the wet separation is carried out by stirring at a temperature of 30 to 60 DEG C for 1 to 5 hours.
The method of recycling waste LCD glass according to claim 1, wherein the step of screening the glass is carried out by using a size difference of the mixture.
Characterized in that the method further comprises the step of micronizing the recovered glass.
Characterized in that the pulverizing step comprises pulverizing the recovered glass into a glass powder having an average particle size of 400 mu m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020170025588A KR101873224B1 (en) | 2017-02-27 | 2017-02-27 | Method for recycling waste lcd glass and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020170025588A KR101873224B1 (en) | 2017-02-27 | 2017-02-27 | Method for recycling waste lcd glass and application thereof |
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| Publication Number | Publication Date |
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| KR101873224B1 true KR101873224B1 (en) | 2018-07-02 |
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| KR1020170025588A KR101873224B1 (en) | 2017-02-27 | 2017-02-27 | Method for recycling waste lcd glass and application thereof |
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| KR (1) | KR101873224B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20220028631A (en) * | 2020-08-31 | 2022-03-08 | 고등기술연구원연구조합 | Method of Removing Impurities for Recycling Waste Touch Panel Glass |
| CN114798688A (en) * | 2022-04-22 | 2022-07-29 | 安徽汇容再生资源有限公司 | Resource recycling system and process for waste liquid crystal panels |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009280425A (en) * | 2008-05-21 | 2009-12-03 | Sharp Corp | Recycling method for non-alkali glass, and glass material obtained thereby |
-
2017
- 2017-02-27 KR KR1020170025588A patent/KR101873224B1/en active IP Right Grant
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009280425A (en) * | 2008-05-21 | 2009-12-03 | Sharp Corp | Recycling method for non-alkali glass, and glass material obtained thereby |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20220028631A (en) * | 2020-08-31 | 2022-03-08 | 고등기술연구원연구조합 | Method of Removing Impurities for Recycling Waste Touch Panel Glass |
| KR102528871B1 (en) * | 2020-08-31 | 2023-05-03 | 고등기술연구원연구조합 | Method of Removing Impurities for Recycling Waste Touch Panel Glass |
| CN114798688A (en) * | 2022-04-22 | 2022-07-29 | 安徽汇容再生资源有限公司 | Resource recycling system and process for waste liquid crystal panels |
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