CN102002592A - Process for treating waste LCD - Google Patents
Process for treating waste LCD Download PDFInfo
- Publication number
- CN102002592A CN102002592A CN201010295612XA CN201010295612A CN102002592A CN 102002592 A CN102002592 A CN 102002592A CN 201010295612X A CN201010295612X A CN 201010295612XA CN 201010295612 A CN201010295612 A CN 201010295612A CN 102002592 A CN102002592 A CN 102002592A
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- China
- Prior art keywords
- liquid crystal
- acetone
- glass
- indium
- leaching
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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
Abstract
The invention discloses a process for treating a waste LCD. The treatment process comprises the following steps of: (1) disassembling the waste LCD, removing plastic parts, cables and the like, and taking out a liquid crystal glass box; (2) leaching the liquid crystal glass box in acetone, removing a Polaroid, and mechanically stripping a glass substrate; (3) after leaching the stripped glass substrate in the acetone, steaming the acetone dissolved with liquid crystal to separate the liquid crystal and the acetone; (4) leaching the glass sheet not containing liquid crystal by using a sulfuric acid solution and manganese dioxide together to obtain a solution rich in indium; (5) extracting indium in the acid solution through an extracting agent, using a zinc rod for displacement, and electrorefining to obtain the product indium; and (6) selling the glass not containing indium and other kinds of glass together, sending the recovered liquid crystal to a professional manufacturer for centralized treatment, and returning the steamed acetone to the original process for continuous use. In the invention, indium in the LCD can be completely recovered, and the waste LCD can be recycled.
Description
Technical field
The present invention relates to the processing method that a kind of waste and old liquid crystal display is handled, particularly relate to a kind of processing method that adopts organic solvent treatment solution crystal display screen.
Background technology
Liquid crystal display is widely used as the indicating meter of various information equipments.Thin flat liquid crystal display often has and is not more than several centimetres thickness, particularly liquid crystal display and has purposes widely, as is used for notebook computer, graphoscope, the instrument display monitor central monitoring system of space vehicle and aircraft etc.Because of many uses, cause waste and old liquid crystal display to pile up, the influence of environment is had duality: the one, the potentiality of environmental pollution, the 2nd, the resource that renewable resources is recycled.The treatment process of present waste and old liquid crystal display is too simple, mostly rest on disassembled simply, fuel, build the road, on the lower level such as backfill, production building materials, the product that lacks added value, deep processing, and various lots of comprehensive utilization of waste materials problem and show and obtain basic solution.
Summary of the invention
The invention provides a kind of at above-mentioned weak point, adopt organic solvent treatment solution crystal glass box, indium on can glass substrate, liquid crystal and the etched electrodes of complete recovery liquid-crystal display, the waste and old liquid crystal display of resource utilization at utmost, environmental benefit and social benefit are obvious.
The invention discloses the processing method that a kind of waste and old liquid crystal display is handled, described treatment process comprises the steps:
1) will discard LCD and disassemble, remove plastic components, cable etc., take out the liquid-crystalline glasses box;
2) utilize acetone leaching liquid crystal glass box, remove polaroid, the mechanically peel glass substrate;
3) after the glass substrate after will peeling off places acetone leaching reaction to finish, the acetone that is dissolved with liquid crystal is distilled, separate liquid crystal and acetone;
4) sheet glass that does not contain liquid crystal utilizes under sulphuric acid soln and the Manganse Dioxide and unites leaching, obtains being rich in the solution of indium;
5) indium in the acid solution extracts by extraction agent, the zink rod displacement, and electrorefining obtains the product indium;
6) glass that does not contain indium is sold with other glass is outer together, and the liquid crystal of recovery send specialized factory to focus on, and the acetone that distills out returns and continues in the former technology to use.
The present invention further is that described step 1) is disassembled by using the liquid-crystal display disassembling apparatus will discard LCD, removes plastic components, cable etc., takes out the liquid-crystalline glasses box.
The present invention further is described step 2) utilize acetone leaching liquid crystal glass box 4h.
The present invention further is that the glass substrate after described step 3) will be peeled off places acetone to leach 15min again.
The present invention further is again, and the sheet glass that described step 4) does not contain liquid crystal utilizes under 90 ℃ of the sulphuric acid soln of 200g/L and the Manganse Dioxide unites leaching, obtains being rich in the solution of indium.
The beneficial effect of the processing method that a kind of waste and old liquid crystal display of the present invention is handled is: adopt organic solvent treatment solution crystal glass box, indium on can glass substrate, liquid crystal and the etched electrodes of complete recovery liquid-crystal display, the waste and old liquid crystal display of resource utilization at utmost, environmental benefit and social benefit are obvious.
Description of drawings
Fig. 1 is the schema of the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present invention is described in detail, thereby protection scope of the present invention is made more explicit defining so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that.
Be illustrated in figure 1 as the schema of the embodiment of the invention.The processing method that a kind of waste and old liquid crystal display is handled, it is characterized in that: described treatment process comprises the steps:
1) will discard LCD and disassemble, remove plastic components, cable etc., take out the liquid-crystalline glasses box;
2) utilize acetone leaching liquid crystal glass box 4h, remove polaroid, the mechanically peel glass substrate;
3) glass substrate after will peeling off places acetone to leach 15min, and reaction after finishing is distilled the acetone that is dissolved with liquid crystal, separates liquid crystal and acetone;
4) sheet glass that does not contain liquid crystal utilizes under 90 ℃ of the sulphuric acid soln of 200g/L and the Manganse Dioxide and unites leaching, obtains being rich in the solution of indium;
5) indium in the acid solution extracts by extraction agent, the zink rod displacement, and electrorefining obtains the product indium;
6) glass that does not contain indium is sold with other glass is outer together, and the liquid crystal of recovery send specialized factory to focus on, and the acetone that distills out returns and continues in the former technology to use.
Described step 1) is disassembled by using the liquid-crystal display disassembling apparatus will discard LCD, removes plastic components, cable etc., takes out the liquid-crystalline glasses box.
Abovely the present invention is described in detail in conjunction with embodiment; only be explanation technical conceive of the present invention and characteristics; its purpose is to allow the people that is familiar with this technology understand content of the present invention and is implemented; can not limit protection scope of the present invention with this; all equivalences that spirit is done according to the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (5)
1. processing method that waste and old liquid crystal display is handled, it is characterized in that: described treatment process comprises the steps:
1) will discard LCD and disassemble, remove plastic components, cable etc., take out the liquid-crystalline glasses box;
2) utilize acetone leaching liquid crystal glass box, remove polaroid, the mechanically peel glass substrate;
3) after the glass substrate after will peeling off places acetone leaching reaction to finish, the acetone that is dissolved with liquid crystal is distilled, separate liquid crystal and acetone;
4) sheet glass that does not contain liquid crystal utilizes under sulphuric acid soln and the Manganse Dioxide and unites leaching, obtains being rich in the solution of indium;
5) indium in the acid solution extracts by extraction agent, the zink rod displacement, and electrorefining obtains the product indium;
6) glass that does not contain indium is sold with other glass is outer together, and the liquid crystal of recovery send specialized factory to focus on, and the acetone that distills out returns and continues in the former technology to use.
2. the processing method that a kind of waste and old liquid crystal display according to claim 1 is handled is characterized in that: described step 1) is disassembled by using the liquid-crystal display disassembling apparatus will discard LCD, removes plastic components, cable etc., takes out the liquid-crystalline glasses box.
3. the processing method that a kind of waste and old liquid crystal display according to claim 1 is handled is characterized in that: described step 2) utilize acetone leaching liquid crystal glass box 4h.
4. the processing method that a kind of waste and old liquid crystal display according to claim 1 is handled, it is characterized in that: the glass substrate after described step 3) will be peeled off places acetone to leach 15min.
5. the processing method that a kind of waste and old liquid crystal display according to claim 1 is handled is characterized in that: the sheet glass that described step 4) does not contain liquid crystal utilizes under 90 ℃ of the sulphuric acid soln of 200g/L and the Manganse Dioxide unites leaching, obtains being rich in the solution of indium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010295612XA CN102002592A (en) | 2010-09-28 | 2010-09-28 | Process for treating waste LCD |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010295612XA CN102002592A (en) | 2010-09-28 | 2010-09-28 | Process for treating waste LCD |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102002592A true CN102002592A (en) | 2011-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010295612XA Pending CN102002592A (en) | 2010-09-28 | 2010-09-28 | Process for treating waste LCD |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103146394A (en) * | 2011-12-07 | 2013-06-12 | 财团法人工业技术研究院 | Method for recovering microencapsulated cholesteric liquid crystal and method for regenerating microencapsulated cholesteric liquid crystal |
| CN103146395A (en) * | 2011-12-07 | 2013-06-12 | 财团法人工业技术研究院 | Method for recycling cholesteric liquid crystal and method for recycling cholesteric liquid crystal |
| CN103157646A (en) * | 2011-12-14 | 2013-06-19 | 深圳市格林美高新技术股份有限公司 | Comprehensive treatment method for waste liquid crystal display |
| CN105825774A (en) * | 2016-04-15 | 2016-08-03 | 宁波金格奥电器有限公司 | Method for removing film coated on screen |
| CN113352731A (en) * | 2021-04-23 | 2021-09-07 | 中国电器科学研究院股份有限公司 | Liquid crystal display polarizer stripping agent and stripping method |
-
2010
- 2010-09-28 CN CN201010295612XA patent/CN102002592A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103146394A (en) * | 2011-12-07 | 2013-06-12 | 财团法人工业技术研究院 | Method for recovering microencapsulated cholesteric liquid crystal and method for regenerating microencapsulated cholesteric liquid crystal |
| CN103146395A (en) * | 2011-12-07 | 2013-06-12 | 财团法人工业技术研究院 | Method for recycling cholesteric liquid crystal and method for recycling cholesteric liquid crystal |
| CN103146394B (en) * | 2011-12-07 | 2014-04-30 | 财团法人工业技术研究院 | Method for recovering microencapsulated cholesteric liquid crystal and method for regenerating microencapsulated cholesteric liquid crystal |
| CN103146395B (en) * | 2011-12-07 | 2014-04-30 | 财团法人工业技术研究院 | Method for recycling cholesteric liquid crystal and method for recycling cholesteric liquid crystal |
| CN103157646A (en) * | 2011-12-14 | 2013-06-19 | 深圳市格林美高新技术股份有限公司 | Comprehensive treatment method for waste liquid crystal display |
| CN103157646B (en) * | 2011-12-14 | 2015-08-19 | 格林美股份有限公司 | A kind of integrated conduct method of waste liquid crystal display |
| CN105825774A (en) * | 2016-04-15 | 2016-08-03 | 宁波金格奥电器有限公司 | Method for removing film coated on screen |
| CN113352731A (en) * | 2021-04-23 | 2021-09-07 | 中国电器科学研究院股份有限公司 | Liquid crystal display polarizer stripping agent and stripping method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| DD01 | Delivery of document by public notice |
Addressee: Suzhou Qunrui Environmental Protection Technology Co., Ltd. Document name: Notification that Application Deemed to be Withdrawn |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110406 |