CN1536394A - Resourceful treatment method for liquid crystal display - Google Patents
Resourceful treatment method for liquid crystal display Download PDFInfo
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- CN1536394A CN1536394A CNA031094872A CN03109487A CN1536394A CN 1536394 A CN1536394 A CN 1536394A CN A031094872 A CNA031094872 A CN A031094872A CN 03109487 A CN03109487 A CN 03109487A CN 1536394 A CN1536394 A CN 1536394A
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Abstract
The invention relates to a resourceful treatment method for a liquid crystal display, which is characterized in that a waste liquid crystal display panel is broken open and then placed into a closed furnace for sectional heating, and is subjected to catalytic exhaust of a catalyst, pyrolysis and coking of plastics, rubbing and demoulding treatment and separation of a coating layer to prepare a clean glass sheet, a separated coating oxide can be recycled as a pigment additive, and the clean glass sheet can be prepared into various building materials for resourceful utilization after being crushed and processed.
Description
Technical field
The present invention relates to the recoverying and utilizing method of discarded object, refer in particular to a kind of recycling processing method of LCD.
Background technology
The present invention is relevant a kind of LCD recycling processing method, it mainly is to go into sealed furnace segmentation heating after the waste liquid crystal display panel is broken, through catalyst catalytic exhaust gas, plastics pyrolysis coking, the mill demoulding is handled through rubbing with the hands again, the separation coatings forms clean glass sheet, recyclable as the colorant adjuvant through the plated film oxide of separation, the clean glass moon can be through pulverizing processing resource user again.
Along with the development of electronics industry, thing followed environmental issue also makes dealer and relevant responsible institution's headache very much.LCD (Liquid Crystal Display is hereinafter to be referred as LCD) has TN (Twisted Nematic) LCD substantially, STN (Super Twisted Nematic) LCD, TFT (Thtn film transistor) LCD and LTPS (LowTemperature PolySilicon) LCD, (Thinfilm transistor Liquid crystal display) is that TFT-LCD is an example with Thin Film Transistor-LCD, its appearance is when tracing back to 1962, U.S.'s RCA laboratory slip-stick artist's prestige is write from memory (Paul Weimer), proposes the Thin Film Transistor-LCD technology; 1988, Japanese Sharp (Sharp) company made first 14 inches display panels.From then on, allow computer screen thoroughly reduce weight, from not only heavily but also big one become and into both light and thin.If compare with 15 inches CRT screens and LCD, the weight of LCD approximately has only about half of CRT, and the degree of depth approximately has only 1/3rd of CRT.The qualification rate of adding the TFT-LCD panel improves constantly, and price constantly descends, so the traditional CRT screen of a large amount of replacements.The TFT-LCD Thin Film Transistor-LCD mainly includes glass substrate, colored filter, Polarizer, backlight module and drive IC, wherein, clamp liquid crystal with layer glass substrate up and down, lower floor's glass is equipped with thin film transistor (TFT) (Thin filmtransistor, TFT), upper strata glass then posts colored filter (Color filter, glass surface coating one deck PI (polyimide) alignment film (alignmentfilm) or ITO film, its effect provides liquid crystal molecule and is evenly distributed interface condition, allow liquid crystal according to predetermined series arrangement, general CRT screen is to utilize electron gun at a high speed to launch electronics, the phosphor powder of strike on silver-colored light curtain, demonstrate picture so as to producing light, yet LCD itself only can be controlled the brightness that light passes through, and itself there is no luminous function, so LCD must add a backlight (back light, BL), the light source of a high brightness and illuminance distribution is provided.By the help of Prism Sheet and diffuser plate, light is distributed to each zone equably at last, TFT LCD is provided a bright light source.Also have frame glue (Sealant) and two kinds of constituents of Spacer in addition.The purposes of frame glue is to allow the layer glass up and down in the liquid crystal panel closely stick, and the liquid crystal molecule in the panel is intercepted with extraneous, so frame glue as its name, is around panel the liquid crystal molecule frame to be limited within the panel.And Spacer mainly provides the support of layer glass up and down, it must be evenly distributed on the glass substrate, in case skewness causes part Spacer to flock together, can hinder light on the contrary passes through, also can't keep the appropriate gap (gap) of two sheet glass up and down, cause the phenomenon of Electric Field Distribution inequality, and then influence the GTG performance of liquid crystal.Only because TFT-LCT includes the about organism-liquid crystal of small molecule structure, can't be with general recycling mode, because liquid crystal and include heavy metallic oxide, easily pollute, and also can't reclaim and use for glass production enterprise, only can be used for industry low level, that pass over pollution and use, and can not handle with the mode that abandons or bury.Even if it is used to pave the way as sand grains, also can causes the pollution of heavy metallic oxide.Therefore, the recycling problem of following LCD LCD must become the technical barrier that industry is badly in need of solution.
The inventor is in view of the demand of the discarded potential recycling of LCD LCD in future, knows very well to have only waste liquid crystal display to be given recycling treatment and utilization is only preferred plan.If the liquid crystal evaporation of waste liquid crystal display is got rid of, and the heavy metallic oxide plated film separated with glass, make it to become metal oxide colorant raw material, and then with glass classification processing and regeneration, the raw material that can be used for refractory heat-insulating and light building material, for example be used to produce the internal layer thermal insulating filling of fireproof metal door, building compartment fire-barrier ceiling, kiln insulation outer lining and freezing insulation material, various building light-weight building materials etc., can be with its a hundred per cent resource, though the cost of recycling treatment is higher, but can make the dealer be without fear of an attack from the rear, and, should be a kind of mode that is worth selection for the offspring descendants stays a slice pure land.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of LCD recycling processing method, it mainly is to go into sealed furnace segmentation heating after the waste liquid crystal display panel is broken, through catalyst catalytic exhaust gas, plastics pyrolysis coking, the mill demoulding is handled through rubbing with the hands again, the separation coatings forms the clean glass moon, recyclable as the colorant adjuvant through the plated film oxide of separation, clean glass sheet can be through pulverizing processing resource user again.
The technical scheme that the present invention is adopted for its technical matters of solution is: a kind of LCD recycling processing method, and it may further comprise the steps:
(1), fragmentation: discarded panel of LCD is broken.
(2), segmentation is heated: the panel of LCD that breaks is inserted carry out the segmentation heating in the continuous tunnel furnace that is connected with blanket gas;
Catalyst catalytic exhaust gas: make liquid crystal flash to gas through first section heating, and under the effect of catalyst, its gas is discharged;
Plastic hot is separated gel: make the plastics of glass surface and plating expect coking, fragmentation through second section heating, and break away from glass;
Rubbing the mill demoulding with the hands handles: the plastics of the coking of glass table, fragmentation and plating material are separated with glass;
Separate coatings: the plastics that break away from glass surface are burnouted through the 3rd section heating.
(3), reclaim: the heavy metallic oxide powder that is present in the plated film that at first can not after-flame reclaims, glass sheet recovery that again will be clean, but the glass sheet after the recovery can be processed into the glass powder of resource through pulverizing.
The heavy metallic oxide powder through with the blending of other raw materials after, the malleable metal oxide colorant raw material that is fired into.
Glass powder can be regenerated as light sclerotin building materials through following steps:
(1), airtight mixed grinding: in clean glass powder, add gas-development agent, make the fine powder below 300 orders through mixing with after grinding;
(2), foaming is fired: get above-mentioned fine powder and put into kiln, foam and fire by the predefined curve of firing, make light sclerotin building materials blank;
(3), gradually cold annealing: by the gradually cold annealing of setting in advance of gradually cold curve;
(4), processing is handled: be dimensioned to tabular, bulk or spherical by predetermined dimension, make light sclerotin building materials for building.
In airtight mixed grinding step, can add the fire-resistant increase material of proper proportion as required, to improve the refractory heat-insulating performance of manufactured goods, this fire-resistant increase material is mud or roach.
Through following steps glass powder is regenerated as fire-resistant heat insulating material:
(1), airtight mixed grinding: will mix a certain amount of ceramic fiber powder, wooden carbon element and flaky graphite in the clean glass powder, insert after mixing and carry out airtight mixed grinding in the sealed tube grinding machine, grind to form the following fine powder of 300 orders;
(2), dress mould: at first brush one deck and concoct the release agent layer that forms in proportion, in the fixing mould of then fine powder behind the airtight mixed grinding being packed at the inside surface of mould;
(3), foaming is fired: the described mould that fine powder is housed is inserted in the kiln, fire the fire-resistant heat insulating material that curve is fired into fine powder foaming by predefined then;
(4), gradually cold annealing: by the gradually cold annealing of setting in advance of gradually cold curve;
(5), cutting trimming: with the fire-resistant heat insulating material after the described gradually cold annealing by taking out in the mould, through cutting out the architectural shape of making the predetermined dimension size;
(6), brush and strengthen refractory coating: look the refractory heat-insulating needs, the outside surface of described architectural shape is brushed one deck strengthen refractory coating, to increase its refractory temperature and surface strength.
The ceramic fiber powder is a refractory ceramic fibre, or is fire resistive material powder such as porcelain earth, lime carbonate.
Add in the glass powder that other raw materials do that prescription is adjusted and after raw material is in harmonious proportion, but resource is regenerated as the blank raw material of wall, floor tile, or the base substrate of ceramic ware product, sleeve face raw material.
The invention has the beneficial effects as follows:
1, the light sclerotin building materials of the present invention can alleviate whole building weight, but harmless its structural strength, the light sclerotin building materials of this kind material uses the former system of raw material to show device as primary raw material by domestic TV that is easy to get or the discarded liquid crystal of computer danger, can make above-mentioned light sclerotin building materials.
2, the light sclerotin building materials of the present invention do not absorb water fully, stop over the shortcoming of congeniality product, really reach and reduce building materials weight effect, so the intensity that do not absorb water is not influenced by cement.
3, the present invention mainly is to be raw material with the waste liquid crystal display, significantly reduces raw materials cost, and solves the environmental pollution problem that waste liquid crystal display is derived.
4, the present invention adds fine sediment of reservoir or roach and gas-development agent with waste liquid crystal display glass, behind foaming, makes piece shape building materials, mixes with 2: 1 (volume ratio) with cement, and the sclerosis back is fit to the owned building body and uses.
5, can absolutely reclaim system again, no environmental protection problem after the fire-resistant heat insulating material of resource regeneration of the present invention is discarded.When being applied to KTV compartment, fire prevention filling material, can meet the fire proofing material standard fully, and can stop to commonly use rock wool, glass fibre cotton material and be incubated adiabatic material rainwater and infiltrate and promptly lose heat insulation effect shortcoming (because not absorbing water), material is filled in the insulation that can be applicable to refrigerator vehicle in addition, replace existing foamed heat insulating material, meet the effect of environment protection requirement and increase car body outer cover intensity.
6, the present invention use the former system of raw material by the domestic TV that is easy to get or computing machine waste liquid crystal display as primary raw material, because of its material and ceramic primary raw material feldspar very approaching, the iconoscope of variety classes is after adding other raw materials work prescription adjustment, can make the cup raw material that is used for wall, floor tile, or the cup of ceramic ware product, sleeve face raw material.
Description of drawings
Fig. 1 is the inventive method process flow diagram.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is done to describe in further detail.
As shown in Figure 1, LCD recycling processing method of the present invention may further comprise the steps:
(1), fragmentation: discarded panel of LCD is broken.
(2), sealed furnace segmentation heating: the panel of LCD that breaks inserted be connected with in the blanket gas closed kiln, the segmentation heating,
The catalyst catalytic exhaust gas: make the liquid crystal evaporation through first section heating, the liquid crystal of evaporation is with catalyst catalysis final vacuum.
Plastics pyrolysis coking: make plastics coking, fragmentation through second section heating, and make it to break away from glass.
Rubbing the mill demoulding with the hands handles: the plastics of glass surface coking and fragmentation and plating material are separated with glass.
Separate coatings: heat the general again through the 3rd section and burnout with the plastics that glass breaks away from.
(3), reclaim: the heavy metallic oxide powder that is present in the plated film that at first can not after-flame reclaims, glass sheet recovery that again will be clean, but the glass sheet after the recovery can be processed into the glass fine powder of resource through pulverizing.
By above recycling processing method, but discarded LCD can be separated into the heavy metallic oxide powder of resource regeneration and clean glass fine powder.
But heavy metallic oxide powder resource of the present invention is regenerated as metal oxide colorant raw material, and its step is as follows:
With the heavy metallic oxide powder again with the blending of other raw materials after, metal oxide colorant raw material is made in calcination.
But clean glass fine powder resource of the present invention is regenerated as light sclerotin building materials, and it includes following steps:
(1), airtight mixed grinding: mixed grinding was to littler powder after clean glass fine powder added gas-development agent; If will improve the refractory heat-insulating performance of manufactured goods, can add fire-resistant increase material, for example mud, roach etc. with proper proportion according to demand.
(2), foaming is fired: go into the curve of firing of kiln by prior setting, light sclerotin building materials blank is burnt till in foaming.
(3), gradually cold annealing: by the gradually cold annealing of setting in advance of gradually cold curve.
(4), processing is handled: be dimensioned to tabular, bulk or spherical by predetermined dimension, make various light sclerotin building materials for building.
But clean glass fine powder resource of the present invention is regenerated as fire-resistant heat insulating material, and it includes following steps:
(1), airtight mixed grinding: behind described clean ceramic fiber powder, carbon element and the carbon or sulphur compound of glass fine powder by blending ratio weight interpolation proper proportion, mixed grinding is to littler powder (being advisable more than with 300#) in the sealed tube grinding machine; Be good wherein with the ceramic fiber powder (in order to increase the intensity on anti-refractory temperature and increase foaming material surface) of 10-14%, the carbon element of 5-8% and carbon or the sulphur compound of 5-8%, this ceramic fiber powder is a refractory ceramic fibre, or can be the fire resistive material powder, as porcelain earth, lime carbonate etc.
(2), the dress mould: the powder behind the airtight mixed grinding is packed in the fixing mould, and the mould inner edge is brushed the release agent that one deck is in harmonious proportion in proportion in advance, as alumina powder 90-95%, porcelain earth 5-10%.
(3), foaming is fired: the described mould that fine powder is housed is inserted in the kiln, fire the fire-resistant heat insulating material that curve is fired into fine powder foaming by predefined then.
(4), gradually cold annealing: by the gradually cold annealing of setting in advance of gradually cold curve.
(5), cutting trimming: with the fire-resistant heat insulating material after the described gradually cold annealing by taking out in the mould, through cutting out the architectural shape of making the predetermined dimension size.
(6), brush and strengthen refractory coating: look the refractory heat-insulating needs, the outside surface of described architectural shape is brushed one deck strengthen refractory coating, as air-setting refractory heat-insulating coating fiber knitted net, to increase its refractory temperature and surface strength.So make can be made into and be used for all-environment fire-resistant heat insulating material such as the heat insulation material of fireproof metal door internal layer, building compartment, fire-barrier ceiling, kiln insulation outer lining and freezing insulation material etc.
But clean glass fine powder resource of the present invention is regenerated as the cup raw material of wall, floor tile, or the cup of ceramic ware product, sleeve face raw material, and it includes following step:
The raw material blending, because of glass of liquid crystal display material and ceramic primary raw material feldspar very approaching, different types of kinescope can be made the above-mentioned cup raw material that is used for wall, floor tile after adding other raw materials and making prescription and adjust, or the cup of ceramic ware product, sleeve face raw material.
So reaching the present invention researches and develops purpose, can effectively solve the problem of environmental protection and discarded object, more can accomplish the environmental protection industrial cycle of resource regeneration.
In sum, the invention discloses a kind of LCD recycling processing method, it is not by being had in the past, and has not seen on the domestic and international disclosed publication, its defective of prior art of having forgone, and can realize its purpose of design by commercial production.
The foregoing description only is of the present invention one preferable possible embodiments, be not in order to arrest limit scope of the present invention, such as be familiar with the personage of this skill, the equivalent structure that uses instructions of the present invention and claims scope to be done changes, and ought to be included within the scope of present patent application.
Claims (10)
1, a kind of LCD recycling processing method is characterized in that may further comprise the steps:
(1), fragmentation: discarded panel of LCD is broken;
(2), segmentation is heated: the panel of LCD that breaks is inserted carry out the segmentation heating in the continuous tunnel furnace that is connected with blanket gas;
Catalyst catalytic exhaust gas: make liquid crystal flash to gas through first section heating, and under the effect of catalyst, its gas is discharged;
Plastic hot is separated gel: make the plastics of glass surface and plating expect coking, fragmentation through second section heating, and break away from glass;
Rubbing the mill demoulding with the hands handles: the plastics of the coking of glass table, fragmentation and plating material are separated with glass;
Separate coatings: the plastics that break away from glass surface are burnouted through the 3rd section heating;
(3), reclaim: the heavy metallic oxide powder that is present in the plated film that at first can not after-flame reclaims, glass sheet recovery that again will be clean, but the glass sheet after the recovery can be processed into the glass fine powder of resource through pulverizing.
2, LCD recycling processing method according to claim 1 is characterized in that, described heavy metallic oxide powder through with the blending of other raw materials after, the malleable metal oxide colorant raw material that is fired into.
3, LCD recycling processing method according to claim 1 is characterized in that, glass powder can be regenerated as light sclerotin building materials through following steps:
(1), airtight mixed grinding: in clean glass powder, add gas-development agent, make the fine powder below 300 orders through mixing with after grinding;
(2), foaming is fired: get above-mentioned fine powder and put into kiln, foam and fire by the predefined curve of firing, make light sclerotin building materials blank;
(3), gradually cold annealing: by the gradually cold annealing of setting in advance of gradually cold curve;
(4), processing is handled: be dimensioned to tabular, bulk or spherical by predetermined dimension, make light sclerotin building materials for building.
4, LCD recycling processing method according to claim 3 is characterized in that: in described airtight mixed grinding step, can add the fire-resistant increase material of proper proportion as required, to improve the refractory heat-insulating performance of manufactured goods.
5, LCD recycling processing method according to claim 4 is characterized in that: described fire-resistant increase material is mud or roach.
6, LCD recycling processing method according to claim 1 is characterized in that, can glass powder be regenerated as fire-resistant heat insulating material through following steps:
(1), airtight mixed grinding: will mix a certain amount of ceramic fiber powder, wooden carbon element and flaky graphite in the clean glass powder, insert after mixing and carry out airtight mixed grinding in the sealed tube grinding machine, grind to form the following fine powder of 300 orders;
(2), dress mould: at first brush one deck and concoct the release agent layer that forms in proportion, in the fixing mould of then fine powder behind the airtight mixed grinding being packed at the inside surface of mould;
(3), foaming is fired: the described mould that fine powder is housed is inserted in the kiln, fire the fire-resistant heat insulating material that curve is fired into fine powder foaming by predefined then;
(4), gradually cold annealing: by the gradually cold annealing of setting in advance of gradually cold curve;
(5), cutting trimming: with the fire-resistant heat insulating material after the described gradually cold annealing by taking out in the mould, through cutting out the architectural shape of making the predetermined dimension size;
(6), brush and strengthen refractory coating: look the refractory heat-insulating needs, the outside surface of described architectural shape is brushed one deck strengthen refractory coating, to increase its refractory temperature and surface strength.
7, LCD recycling processing method according to claim 6 is characterized in that: the amount of mixing the ceramic fiber powder in described glass powder is 10-14%, and the amount of mixing wooden carbon element is 5-8%, and the amount of mixing flaky graphite is 5-8%.
8, LCD recycling processing method according to claim 7 is characterized in that: described ceramic fiber powder is a refractory ceramic fibre, or is fire resistive material powder such as porcelain earth, lime carbonate.
9, LCD recycling processing method according to claim 6 is characterized in that: the salic powder 90-95% of release agent layer that described mould inner surface is brushed, contain porcelain earth 5-10%.
10, LCD recycling processing method according to claim 1, it is characterized in that: add in described glass powder that other raw materials do that prescription is adjusted and after raw material is in harmonious proportion, but resource is regenerated as the blank raw material of wall, floor tile, or the base substrate of ceramic ware product, sleeve face raw material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031094872A CN1536394A (en) | 2003-04-10 | 2003-04-10 | Resourceful treatment method for liquid crystal display |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031094872A CN1536394A (en) | 2003-04-10 | 2003-04-10 | Resourceful treatment method for liquid crystal display |
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| CN1536394A true CN1536394A (en) | 2004-10-13 |
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| CNA031094872A Pending CN1536394A (en) | 2003-04-10 | 2003-04-10 | Resourceful treatment method for liquid crystal display |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100392477C (en) * | 2006-07-07 | 2008-06-04 | 南京大学 | Liquid crystal display panel resource processing method |
| TWI410282B (en) * | 2011-04-11 | 2013-10-01 | Hong Integration Ltd | Treatment for recycling wasted filmed glasses |
| CN104003606A (en) * | 2013-02-22 | 2014-08-27 | 春池玻璃实业有限公司 | High-temperature manufacturing method of inorganic foaming material and inorganic foaming material manufactured by same |
| CN106166562A (en) * | 2016-08-30 | 2016-11-30 | 南京万舟发机电科技有限公司 | A kind of liquid crystal panel recovery processing technique |
| CN107530608A (en) * | 2015-04-27 | 2018-01-02 | 崔盛弼 | Manufacturing method of foamed artificial filter material for water treatment that reuses waste liquid crystal display glass and waste bottle glass produced by waste electrical and electronic products |
| CN108761858A (en) * | 2018-05-21 | 2018-11-06 | 南京中电熊猫液晶显示科技有限公司 | A kind of method that mask plate and liquid crystal display panel defective products recycle |
| CN112979187A (en) * | 2021-04-12 | 2021-06-18 | 简单科技股份有限公司 | Method for recycling glass product containing high polymer material without separation and sheet |
-
2003
- 2003-04-10 CN CNA031094872A patent/CN1536394A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100392477C (en) * | 2006-07-07 | 2008-06-04 | 南京大学 | Liquid crystal display panel resource processing method |
| TWI410282B (en) * | 2011-04-11 | 2013-10-01 | Hong Integration Ltd | Treatment for recycling wasted filmed glasses |
| CN104003606A (en) * | 2013-02-22 | 2014-08-27 | 春池玻璃实业有限公司 | High-temperature manufacturing method of inorganic foaming material and inorganic foaming material manufactured by same |
| CN104003606B (en) * | 2013-02-22 | 2017-08-08 | 春池玻璃实业有限公司 | High-temperature manufacturing method of inorganic foaming material and inorganic foaming material manufactured by same |
| CN107530608A (en) * | 2015-04-27 | 2018-01-02 | 崔盛弼 | Manufacturing method of foamed artificial filter material for water treatment that reuses waste liquid crystal display glass and waste bottle glass produced by waste electrical and electronic products |
| CN107530608B (en) * | 2015-04-27 | 2019-09-24 | 崔盛弼 | Manufacturing method of foaming artificial filter material for water treatment for recycling waste liquid crystal display glass and waste bottle glass |
| CN106166562A (en) * | 2016-08-30 | 2016-11-30 | 南京万舟发机电科技有限公司 | A kind of liquid crystal panel recovery processing technique |
| CN106166562B (en) * | 2016-08-30 | 2018-03-02 | 南京万舟发机电科技有限公司 | A kind of liquid crystal panel recovery processing technique |
| CN108761858A (en) * | 2018-05-21 | 2018-11-06 | 南京中电熊猫液晶显示科技有限公司 | A kind of method that mask plate and liquid crystal display panel defective products recycle |
| CN108761858B (en) * | 2018-05-21 | 2020-11-27 | 南京中电熊猫液晶显示科技有限公司 | Mask and method for recycling defective liquid crystal panel |
| CN112979187A (en) * | 2021-04-12 | 2021-06-18 | 简单科技股份有限公司 | Method for recycling glass product containing high polymer material without separation and sheet |
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