CN104498721A - Innocent treatment method and system for liquid crystal panel - Google Patents
Innocent treatment method and system for liquid crystal panel Download PDFInfo
- Publication number
- CN104498721A CN104498721A CN201510006706.3A CN201510006706A CN104498721A CN 104498721 A CN104498721 A CN 104498721A CN 201510006706 A CN201510006706 A CN 201510006706A CN 104498721 A CN104498721 A CN 104498721A
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- crystal panel
- storing unit
- extraction
- entrance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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 belongs to the field of innocent treatment of hazardous wastes, and provides an innocent treatment method for a liquid crystal panel, which comprises the following steps: A. crushing the liquid crystal panel; B. soaking the crushed liquid crystal panel pieces in an acetone solution, performing evaporation condensation on the acetone solution after soaking, and recovering liquid crystals dissolved in the acetone solution; C. soaking the crushed liquid crystal panel pieces which have been soaked in the acetone solution in a sulfuric acid solution, and recovering solid-phase residue after soaking; and D. performing extraction and back extraction treatment on the sulfuric acid soaking solution, and recovering to obtain an indium-containing purified solution. The invention provides an innocent treatment system for a liquid crystal panel, which comprises a crusher, a feeding device, a soaking device, a distilling device, a condensing device, a first storage device, a second storage device, a third storage device, a fourth storage device, a fifth storage device, a sixth storage device, an extraction device, a back extraction device, a transfer pump and pipelines for connection. The invention is used for innocent treatment of a liquid crystal panel.
Description
Technical field
The invention belongs to danger wastes harmless treatment field, especially relate to technique and the system of liquid crystal panel harmless treatment and recycling.
Background technology
Liquid crystal flat-panel technique of display was found in for 19 end of the centurys, but until just started commercialization the second half in 20th century.Nineteen sixty-eight U.S. RCA(Radio Corporation of America) to issue a take liquid crystal as the wrist-watch of material in company, from then on liquid crystal formally marches toward commercialization and practical road.Up to now, along with growth in the living standard, intellectualized technology demand is increasing, and the products such as LCD TV, computer monitor, mobile phone, projector, navigating instrument all adopt liquid crystal display device.Liquid crystal display device general work-ing life is 5 ~ 8 years, has become the main object of China's electronic waste process.Liquid crystal in liquid crystal panel is the organic compound mixture based on C, H, O, F element, the mixed liquid crystal be made up of biphenyls liquid crystal, cyclohexanes liquid crystal etc., deal with improperly, the hazardous and noxious substances such as aromatics and even polycyclic aromatic hydrocarbons can be generated, to environment; On the other hand, the indium content in discarded liquid crystal panel is high, and indium toxicity ratio lead also wants large, and toxicity is not sneezed at, and can cause serious threat to the health of environment and the mankind.Due to current indium, there is lack of raw materials, expensive, and during research liquid crystal panel harmless treatment, recovery indium is to making rational use of resources and reserved resource important in inhibiting.
The process of liquid crystal panel is the same with the process of other electronics Hazardous wastes, follow " 3C " principle (avoiding producing (Clean), comprehensive utilization (Cycle), dealing carefully with (Control)), take innoxious process for treating, focus on cycling and reutilization, strengthening Environmental capacity.The correlative study that China carries out liquid crystal panel process is started late, and process disposal faces many ecnomics and enviroment problems.CN101722169 proposes a kind of method for harmless heat treatment of waste liquid crystal display, to carry out heating and decomposition treatment under a nitrogen atmosphere after the face glass fragmentation containing liquid crystal and discharge after decomposition gas high temperature burning handling, the harmless treatment that the method only relates to liquid crystal panel consumes mass energy and fails to propose to reclaim the scheme of precious metal.CN101733268 proposes a kind of liquid crystal display (LCD) harmless disassembly method, complex process, and to the device after disassembling, how recycling does not provide scheme.CN101133172A provides a kind of recovery method and device thereof of indium from waste liquid crystal display, utilize the indium in the direct lysate crystal panel of acid, generate containing after solution of indium, zinc or aluminum particulate (0.1-8mm) is utilized to replace, indium is peeled off from metallic surface by the modes such as recycling ultra-sonic oscillation, remove recovery indium after other metallic impurity finally by interpolation alkali, integrated artistic is complicated and wayward, and cost is high.CN103602815A discloses a kind of method of recovery indium from liquid-crystal display, and the method needs liquid crystal panel to be broken into both bulk glasses plate and utilizes electrically heated stripping mode to remove light polarizing film, complex pretreatment; In advance liquid crystal is not wherein processed, directly adopt vitriol oil soak solution crystal panel, very easily produce secondary pollution; Extraction and reextraction process, need adjust pH value and adopt centrifugation, and therefore, this technique entirety controls complicated, and cost is high, have impact on further industrial applications.In view of the limitation of current liquid crystal panel process, the liquid crystal panel harmless treatment process that exploitation is advanced and system, to resource recycling, ensure that people ' s health and ecological safety etc. are significant.
Summary of the invention
In order to overcome the deficiencies such as available liquid crystal panel treatment process complex process, high, the easy generation secondary pollution of processing cost, the present invention proposes a kind of liquid crystal panel innoxious process for treating and solving.
An object of the present invention is, propose a kind of liquid crystal panel method for innocent treatment, concrete technical scheme is as follows:
A kind of liquid crystal panel method for innocent treatment, comprises step:
A, liquid crystal panel is carried out fragmentation;
B, utilize acetone soln to soak broken for liquid crystal panel thing, the acetone soln after immersion, through evaporative condenser, reclaims the liquid crystal be dissolved in acetone soln;
C, the broken thing of the liquid crystal panel soaked by acetone soln are put into sulphuric acid soln and are soaked, and reclaim solid phase residue after soaking;
D, sulphuric acid soln soak solution carried out extracting process with stripping, reclaim the purified solution that acquisition contains indium.
Wherein, in this steps A, the granularity <2cm after liquid crystal panel fragmentation.
Wherein, in this step B, the acetone soln circulation immersion obtained uses.
Wherein, in this step C, the concentration of sulphuric acid soln is 0.5 ~ 2mol/L.
Wherein, this step D specifically comprises:
D1, add organic extractant extract in sulfuric acid soak solution, extraction mode is action of forced stirring, stratification; Upper organic phase solution is used for stripping;
Add strippant in D2, after the extraction organic phase solution to strip, reextraction mode is action of forced stirring, stratification; Lower floor's liquid is the purified solution containing indium.
Wherein, in step D1, lower floor's sulphuric acid soln recycles; In step D2, upper organic phase solution circulated uses.
Wherein, described extraction agent is the mixture that bisphosphate mixes in 20 ~ 40%:80 ~ 60% ratio with aviation kerosene, and the volume ratio of extraction agent and extraction liquid is 1:3 ~ 1:1; Described strippant is hydrochloric acid, and the volume ratio of strippant and anti-stripping agent is 3:1 ~ 1:1.
Two of object of the present invention is, propose a kind of liquid crystal panel innocuity disposal system, concrete technical scheme is as follows:
A kind of liquid crystal panel innocuity disposal system, comprise: crusher, feeding unit, infuser device, water distilling apparatus, condensing works, the first storing unit, the second storing unit, the 3rd storing unit, the 4th storing unit, the 5th storing unit, the 6th storing unit, extraction plant, reextraction device, transferpump and the pipeline for connecting, wherein:
The outlet of this crusher is connected with feeding unit entrance, and this crusher is used for liquid crystal panel to carry out fragmentation;
The outlet of this feeding unit is connected with infuser device entrance, and this feeding unit is used for broken for liquid crystal panel thing to be delivered to infuser device;
The outlet of this infuser device is connected with water distilling apparatus entrance through transferpump respectively and is connected with the second storing unit entrance; This infuser device is used for utilizing acetone soln or sulphuric acid soln to carry out the broken thing of soak solution crystal panel;
The outlet of this water distilling apparatus is connected with condensing works entrance, and this water distilling apparatus is used for the acetone soln after by immersion and evaporates;
The outlet of this condensing works is connected with the first storing unit entrance, and the acetone vapor that this condensing works is used for this water distilling apparatus to evaporate carries out condensation;
This first storing unit is connected with this infuser device through transferpump, and this first storing unit for the acetone soln storing acetone soln and will obtain after condensing works condensation, and again supplies this infuser device and recycles;
The outlet of this second storing unit is connected with extraction plant entrance through transferpump, and this second storing unit is for storing the sulphuric acid soln soak solution exported by this infuser device;
3rd storing unit outlet is connected with extraction plant entrance through transferpump, and the 3rd storing unit is for storing extraction agent;
This extraction plant upper outlet is connected with reextraction device portal through transferpump, and this extraction plant lower part outlet is connected with the 4th storing unit entrance through transferpump, and this extraction plant is used for extraction treatment;
4th storing unit outlet is connected with this infuser device entrance through transferpump, and the 4th storing unit for storing the sulphuric acid soln exported by this extraction plant, and again supplies this infuser device and recycles;
5th storing unit outlet is connected with this reextraction device portal through transferpump, and this five storing unit is for storing strippant;
This reextraction device upper outlet is connected with the 3rd storing unit entrance through transferpump, and this reextraction device lower part outlet is connected with the 6th storing unit entrance through transferpump, and this reextraction device is for process of stripping;
6th storing unit is for storing the anti-stripping agent exported by this reextraction device.
Wherein, this water distilling apparatus adopts indirect heating distillation mode, and this condensing works adopts gas/liquid indirect condensing mode.
Wherein, this extraction plant and reextraction device adopt mechanical stirring mode.
Wherein, the extraction agent that the 3rd storing unit stores is the mixture that bisphosphate mixes in 20 ~ 40%:80 ~ 60% ratio with aviation kerosene, and the strippant that the 5th storing unit stores is hydrochloric acid.
Wherein, in this extraction plant, extraction agent and extraction liquid are that 1:3 ~ 1:1 extracts with volume ratio, and in this reextraction device, the volume ratio of strippant and anti-stripping agent is that 3:1 ~ 1:1 strips.
The beneficial effect that the present invention adopts technique scheme to produce is:
(1) while realizing liquid crystal panel harmless treatment, the object reclaiming liquid crystal and indium metal is reached;
(2) technical process is simple and direct, simple to operate, and level of automation is high, and cost is low, and economic benefit is good;
(3) treating processes neat and tidy, does not produce secondary pollution, provides new departure, obvious environment benefit for liquid crystal panel realizes complete resource utilization.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the embodiment of a liquid crystal panel innocuity disposal system of the present invention.
Embodiment
Liquid crystal panel harmless treatment process process of the present invention can briefly be described as: A, liquid crystal panel is carried out fragmentation; B, utilize acetone soln to soak broken for liquid crystal panel thing, the acetone soln after immersion, through evaporative condenser, reclaims the liquid crystal be dissolved in acetone soln; C, the broken thing of the liquid crystal panel soaked by acetone soln are put into sulphuric acid soln and are soaked, and reclaim solid phase residue after soaking; D, sulphuric acid soln soak solution carried out extracting process with stripping, reclaim the purified solution that acquisition contains indium.Thus while realizing liquid crystal panel harmless treatment, reach the object reclaiming liquid crystal and precious metal indium.
Below in conjunction with accompanying drawing, liquid crystal panel method for innocent treatment of the present invention and system are further elaborated.
Liquid crystal panel method for innocent treatment of the present invention, performing step comprises: liquid crystal panel is carried out fragmentation by (1).(2) utilize acetone soln to soak broken for liquid crystal panel thing, the acetone soln after immersion, through evaporative condenser, reclaims the liquid crystal be dissolved in acetone and utilizes for following resourceization; And preferred, acetone soln (the acetone clear liquid after the filtering process) recirculation obtained can be soaked and use.(3) the broken thing of the liquid crystal panel soaked by acetone is put into sulphuric acid soln and is soaked, and after soaking, solid phase residue is mainly borosilicate glass and plastics etc., can carry out following resource utilization.(4) extracting adding organic extractant in sulfuric acid soak solution, extraction mode adopts conventional action of forced stirring, stratification; The organic phase solution (extraction liquid) on upper strata is used further to strip, and the sulphuric acid soln (the sulfuric acid clear liquid after filtering process) of lower floor can preferably use in recirculation.(5) add strippant in organic phase solution after the extraction to strip, reextraction mode adopts conventional action of forced stirring, stratification; Upper organic phase solution can preferably use in recirculation, and the anti-stripping agent of lower floor's liquid is the purified solution containing indium, can be used as processing raw material or further replacement extraction metal simple-substance indium containing indium product.Immersion as above, extraction, reextraction are carried out under all adopting ordinary method and general environmental conditions, and the concentration of each solution, solvent (as acetone soln, sulphuric acid soln, extraction agent, strippant) also can be selected and adjustment according to practical situation simultaneously.
Contriver is optimized to raise the efficiency in the above-mentioned methods; Wherein preferred, preferred particle size after cracking (granularity refers to the size of feed particles, generally represents with the maximum length of the particle) <2cm of the broken thing of the irregularly shaped liquid crystal panel after described liquid crystal panel fragmentation; Described sulphuric acid soln preferably adopts dilution heat of sulfuric acid, and concentration is 0.5-2mol/L, and soaking temperature is normal temperature (following non-specifically illustrates, all can carry out at normal temperatures); Described extraction agent is the mixture that bisphosphate mixes in 20 ~ 40%:80 ~ 60% ratio with aviation kerosene; The volume ratio of extraction agent and extraction liquid is 1:3 ~ 1:1, and extraction time is 45 ~ 120min, and temperature is normal temperature; Described strippant is hydrochloric acid, and the volume ratio of strippant and anti-stripping agent is 3:1 ~ 1:1, and back-extraction time is 45 ~ 120min, and temperature is normal temperature.
Consult shown in Fig. 1, in order to carry out above-mentioned process more efficiently, the present invention also proposes a kind of liquid crystal panel innocuity disposal system for realizing above-mentioned treatment process, mainly comprises: shredder assembly, feeding unit, infuser device, water distilling apparatus, condensing works, acetone clear liquid storing unit, dilute sulphuric acid soak solution storing unit, extraction agent storing unit, dilute sulphuric acid clear liquid storing unit, extraction plant, reextraction device, reverse-extraction agent storing unit, strip liquor storing unit, for the pipeline that connects and the transferpump etc. for transmitting.Wherein, in order to accurate measurement, transferpump preferably adopts volume pump.
In this liquid crystal panel innocuity disposal system, crusher 1 exports and is connected with feeding unit 2 entrance; Feeding unit 2 exports and is connected with infuser device 3 entrance; Infuser device 3 exports and cushions water distilling apparatus 5 entrance through 1# volume pump 4 and acetone soak solution and be connected; Acetone soak solution buffering water distilling apparatus 5 exports and is connected with acetone steam condensing works 6 entrance; Acetone steam condensing works 6 exports and is connected with acetone clear liquid storing unit 7 entrance; Acetone clear liquid storing unit 7 is connected with infuser device 3 by 2# volume pump 8.Another outlet of infuser device 3 is connected with dilute sulphuric acid soak solution storing unit 10 entrance through 3# volume pump 9; Dilute sulphuric acid soak solution storing unit 10 exports and is connected with extraction plant 12 entrance through 4# volume pump 11.Extraction agent storing unit 13 exports and is connected with extraction plant 12 entrance through 5# volume pump 14; Extraction plant 12 upper outlet is connected with reextraction device 16 entrance through 6# pump 15; Extraction plant 12 lower part outlet is connected with dilute sulphuric acid clear liquid storing unit 18 entrance through 7# volume pump 17; Dilute sulphuric acid clear liquid storing unit 18 exports and is connected with infuser device 3 entrance through 8# volume pump 19.Reverse-extraction agent storing unit 20 exports and is connected with reextraction device 16 entrance through 9# volume pump 21; Reextraction device 16 upper outlet is connected with extraction agent storing unit 13 entrance through 10# volume pump 22; Reextraction device 16 lower part outlet is connected with strip liquor storing unit 24 entrance through 11# volume pump 23.
This crusher 1 is for carrying out fragmentation by liquid crystal panel; This feeding unit 2 is for being delivered to infuser device 3 by broken for liquid crystal panel thing; This infuser device 3 carrys out the broken thing of soak solution crystal panel for utilizing acetone soln or sulphuric acid soln; This buffering water distilling apparatus 5 is for evaporating the acetone soln after immersion; This condensing works 6 carries out condensation for the acetone vapor evaporated by this water distilling apparatus; This acetone clear liquid storing unit 7 for the acetone soln storing acetone soln and will obtain after condensing works condensation, and again supplies this infuser device 3 and recycles; This dilute sulphuric acid soak solution storing unit 10 is for storing the sulphuric acid soln soak solution exported by this infuser device; This extraction agent storing unit 13 is for storing extraction agent; This extraction plant 12 is for extraction treatment; This dilute sulphuric acid clear liquid storing unit 18 for storing the sulphuric acid soln exported by this extraction plant, and again supplies this infuser device 3 and recycles; This reverse-extraction agent storing unit 20 is for storing strippant; This reextraction device 14 is for process of stripping; This strip liquor storing unit 24 is for storing the anti-stripping agent (purified solution containing indium) exported by this reextraction device.
Wherein preferred, the extraction agent that this extraction agent storing unit 13 stores is the mixture that bisphosphate mixes in 20 ~ 40%:80 ~ 60% ratio with aviation kerosene, and the strippant that this reverse-extraction agent storing unit 20 stores is hydrochloric acid.In this extraction plant 12, extraction agent and extraction liquid are that 1:3 ~ 1:1 extracts with volume ratio, and in this reextraction device 14, the volume ratio of strippant and anti-stripping agent is that 3:1 ~ 1:1 strips.
Above-mentioned each device of this liquid crystal panel innocuity disposal system all can adopt existing apparatus to build.Wherein preferred, crusher 1 is flat blade crusher, sheet blade crusher or shear crusher; Feeding unit 2 is screw conveyer or basket-hanging feeding unit; Infuser device 3 is general chemistry steeping tank, inner liner polytetrafluoroethylene; 1# volume pump 4,2# volume pump 8,3# volume pump 9,4# volume pump 11,5# volume pump 14,6# volume pump 15,7# metering 17,8# volume pump 19,9# volume pump 21,10# volume pump 22 and 11# volume pump 23 are the chemical computation pump of acid/alkali-corrosion-resistant, as peristaltic pump etc.; Water distilling apparatus 5 is hot water jacket or electric heating cover indirect heating water distilling apparatus; Condensing works 6 is gas/liquid indirect cooling-type interchanger, as coil tube type, finned etc.; Acetone clear liquid storing unit 7, dilute sulphuric acid soak solution storing unit 10, dilute sulphuric acid clear liquid storing unit 18, reverse-extraction agent storing unit 20 and extraction liquid storing unit 24 can be all general chemistry solution storage tanks, inner liner polytetrafluoroethylene; Extraction plant 8 and reextraction device 16 can be the stirred pots being furnished with mechanical stirring or ultrasonic stirring mode.
As fully visible, liquid crystal panel harmless treatment process of the present invention and system, advantage is: while realizing liquid crystal panel harmless treatment, reaches the object reclaiming liquid crystal and precious metal indium; Technical process is simple and direct, simple to operate, and level of automation is high, and cost is low; Treating processes neat and tidy, does not produce secondary pollution, has good economic benefit and environmental benefit.
Although specifically show in conjunction with preferred embodiment and describe the present invention; but those skilled in the art should be understood that; not departing from the spirit and scope of the present invention that appended claims limits; can make a variety of changes the present invention in the form and details, be protection scope of the present invention.
Claims (12)
1. a liquid crystal panel method for innocent treatment, is characterized in that, comprises step:
A, liquid crystal panel is carried out fragmentation;
B, utilize acetone soln to soak broken for liquid crystal panel thing, the acetone soln after immersion, through evaporative condenser, reclaims the liquid crystal be dissolved in acetone soln;
C, the broken thing of the liquid crystal panel soaked by acetone soln are put into sulphuric acid soln and are soaked, and reclaim solid phase residue after soaking;
D, sulphuric acid soln soak solution carried out extracting process with stripping, reclaim the purified solution that acquisition contains indium.
2. liquid crystal panel method for innocent treatment according to claim 1, is characterized in that: in this steps A, the granularity <2cm after liquid crystal panel fragmentation.
3. liquid crystal panel method for innocent treatment according to claim 1, is characterized in that: in this step B, and the acetone soln circulation immersion obtained uses.
4. liquid crystal panel method for innocent treatment according to claim 1, is characterized in that: in this step C, and the concentration of sulphuric acid soln is 0.5 ~ 2mol/L.
5. liquid crystal panel method for innocent treatment according to claim 1, is characterized in that: this step D specifically comprises:
D1, add organic extractant extract in sulfuric acid soak solution, extraction mode is action of forced stirring, stratification; Upper organic phase solution is used for stripping;
Add strippant in D2, after the extraction organic phase solution to strip, reextraction mode is action of forced stirring, stratification; Lower floor's liquid is the purified solution containing indium.
6. liquid crystal panel method for innocent treatment according to claim 5, is characterized in that: in step D1, and lower floor's sulphuric acid soln recycles; In step D2, upper organic phase solution circulated uses.
7. the liquid crystal panel method for innocent treatment according to claim 5 or 6, it is characterized in that: described extraction agent is the mixture that bisphosphate mixes in 20 ~ 40%:80 ~ 60% ratio with aviation kerosene, the volume ratio of extraction agent and extraction liquid is 1:3 ~ 1:1; Described strippant is hydrochloric acid, and the volume ratio of strippant and anti-stripping agent is 3:1 ~ 1:1.
8. a liquid crystal panel innocuity disposal system, it is characterized in that, comprise: crusher, feeding unit, infuser device, water distilling apparatus, condensing works, the first storing unit, the second storing unit, the 3rd storing unit, the 4th storing unit, the 5th storing unit, the 6th storing unit, extraction plant, reextraction device, transferpump and the pipeline for connecting, wherein:
The outlet of this crusher is connected with feeding unit entrance, and this crusher is used for liquid crystal panel to carry out fragmentation;
The outlet of this feeding unit is connected with infuser device entrance, and this feeding unit is used for broken for liquid crystal panel thing to be delivered to infuser device;
The outlet of this infuser device is connected with water distilling apparatus entrance through transferpump respectively and is connected with the second storing unit entrance; This infuser device is used for utilizing acetone soln or sulphuric acid soln to carry out the broken thing of soak solution crystal panel;
The outlet of this water distilling apparatus is connected with condensing works entrance, and this water distilling apparatus is used for the acetone soln after by immersion and evaporates;
The outlet of this condensing works is connected with the first storing unit entrance, and the acetone vapor that this condensing works is used for this water distilling apparatus to evaporate carries out condensation;
This first storing unit is connected with this infuser device through transferpump, and this first storing unit for the acetone soln storing acetone soln and will obtain after condensing works condensation, and again supplies this infuser device and recycles;
The outlet of this second storing unit is connected with extraction plant entrance through transferpump, and this second storing unit is for storing the sulphuric acid soln soak solution exported by this infuser device;
3rd storing unit outlet is connected with extraction plant entrance through transferpump, and the 3rd storing unit is for storing extraction agent;
This extraction plant upper outlet is connected with reextraction device portal through transferpump, and this extraction plant lower part outlet is connected with the 4th storing unit entrance through transferpump, and this extraction plant is used for extraction treatment;
4th storing unit outlet is connected with this infuser device entrance through transferpump, and the 4th storing unit for storing the sulphuric acid soln exported by this extraction plant, and again supplies this infuser device and recycles;
5th storing unit outlet is connected with this reextraction device portal through transferpump, and this five storing unit is for storing strippant;
This reextraction device upper outlet is connected with the 3rd storing unit entrance through transferpump, and this reextraction device lower part outlet is connected with the 6th storing unit entrance through transferpump, and this reextraction device is for process of stripping;
6th storing unit is for storing the anti-stripping agent exported by this reextraction device.
9. liquid crystal panel innocuity disposal system according to claim 8, is characterized in that: this water distilling apparatus adopts indirect heating distillation mode, and this condensing works adopts gas/liquid indirect condensing mode.
10. liquid crystal panel innocuity disposal system according to claim 8, is characterized in that: this extraction plant and reextraction device adopt mechanical stirring mode.
11. liquid crystal panel innocuity disposal systems according to claim 8, it is characterized in that: the extraction agent that the 3rd storing unit stores is the mixture that bisphosphate mixes in 20 ~ 40%:80 ~ 60% ratio with aviation kerosene, the strippant that the 5th storing unit stores is hydrochloric acid.
12. liquid crystal panel innocuity disposal systems according to claim 8, it is characterized in that: in this extraction plant, extraction agent and extraction liquid are that 1:3 ~ 1:1 extracts with volume ratio, and in this reextraction device, the volume ratio of strippant and anti-stripping agent is that 3:1 ~ 1:1 strips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510006706.3A CN104498721A (en) | 2015-01-08 | 2015-01-08 | Innocent treatment method and system for liquid crystal panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510006706.3A CN104498721A (en) | 2015-01-08 | 2015-01-08 | Innocent treatment method and system for liquid crystal panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104498721A true CN104498721A (en) | 2015-04-08 |
Family
ID=52940171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510006706.3A Pending CN104498721A (en) | 2015-01-08 | 2015-01-08 | Innocent treatment method and system for liquid crystal panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104498721A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105420502A (en) * | 2015-11-27 | 2016-03-23 | 四川长虹格润再生资源有限责任公司 | Method for recovering indium from waste liquid crystal display screen panel |
| CN106868323A (en) * | 2017-02-23 | 2017-06-20 | 同济大学 | A kind of method that indium is extracted from discarded liquid crystal display panel |
| CN107267758A (en) * | 2017-06-01 | 2017-10-20 | 华东师范大学 | Recovery indium, the method for silver from the waste and old component of Hall containing indium |
| CN108526196A (en) * | 2018-03-26 | 2018-09-14 | 华南理工大学 | A kind of method of quick stripping waste liquor crystal display polaroid |
| CN109517991A (en) * | 2018-12-26 | 2019-03-26 | 北京科技大学 | The recovery method of indium metal in a kind of waste and old liquid crystal display |
| 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 (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1986732A (en) * | 2005-12-19 | 2007-06-27 | 比亚迪股份有限公司 | Liquid crystal material recovering method |
| US20100101367A1 (en) * | 2005-08-04 | 2010-04-29 | Kobelco Eco-Solutions Co., Ltd. | Method and apparatus for recovering indium from waste liquid crystal displays |
| CN102002591A (en) * | 2010-09-28 | 2011-04-06 | 苏州群瑞环保科技有限公司 | Process for extracting indium from waste liquid crystal display screen |
-
2015
- 2015-01-08 CN CN201510006706.3A patent/CN104498721A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100101367A1 (en) * | 2005-08-04 | 2010-04-29 | Kobelco Eco-Solutions Co., Ltd. | Method and apparatus for recovering indium from waste liquid crystal displays |
| CN1986732A (en) * | 2005-12-19 | 2007-06-27 | 比亚迪股份有限公司 | Liquid crystal material recovering method |
| CN102002591A (en) * | 2010-09-28 | 2011-04-06 | 苏州群瑞环保科技有限公司 | Process for extracting indium from waste liquid crystal display screen |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105420502A (en) * | 2015-11-27 | 2016-03-23 | 四川长虹格润再生资源有限责任公司 | Method for recovering indium from waste liquid crystal display screen panel |
| CN105420502B (en) * | 2015-11-27 | 2018-08-14 | 四川长虹格润环保科技股份有限公司 | The method of recovery indium from waste LCD panel |
| CN106868323A (en) * | 2017-02-23 | 2017-06-20 | 同济大学 | A kind of method that indium is extracted from discarded liquid crystal display panel |
| CN107267758A (en) * | 2017-06-01 | 2017-10-20 | 华东师范大学 | Recovery indium, the method for silver from the waste and old component of Hall containing indium |
| CN107267758B (en) * | 2017-06-01 | 2018-11-09 | 华东师范大学 | The method of recovery indium, silver from the waste and old component of Hall containing indium |
| CN108526196A (en) * | 2018-03-26 | 2018-09-14 | 华南理工大学 | A kind of method of quick stripping waste liquor crystal display polaroid |
| CN109517991A (en) * | 2018-12-26 | 2019-03-26 | 北京科技大学 | The recovery method of indium metal in a kind of waste and old liquid crystal display |
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104498721A (en) | Innocent treatment method and system for liquid crystal panel | |
| Amato et al. | End of life liquid crystal displays recycling: A patent review | |
| Ma et al. | Technological process and optimum design of organic materials vacuum pyrolysis and indium chlorinated separation from waste liquid crystal display panels | |
| CN102671921B (en) | Waste liquid crystal display panel treatment and resource recycling method | |
| CN103602815B (en) | The method of recovery indium from waste liquid crystal display | |
| CN102925691B (en) | Method for recycling lead from lead-containing cathode-ray tube glass in discarded electronic waste | |
| CN102069086B (en) | Method for reclaiming and treating electronic waste | |
| CN103923669B (en) | The integral vacuum pyrolysis recovery device of liquid crystal and light polarizing film in waste and old liquid crystal panel | |
| CN102172600A (en) | Comprehensive recovery method using vacuum pyrolysis oil of wastes like waste circuit boards | |
| CN103191903B (en) | Method for recycling waste LCD (liquid crystal display) panels | |
| Zhang et al. | Efficient indium leaching and recovery from waste liquid crystal displays panels using microwave and ultrasound-assisted heating system | |
| Zhai et al. | Co-liquefaction of sewage sludge and oil-tea-cake in supercritical methanol: yield of bio-oil, immobilization and risk assessment of heavy metals | |
| CN105906132A (en) | Rare-earth saponification wastewater comprehensive treatment system | |
| CN103588989A (en) | Method for recovery of carbon fiber by use of low temperature molten salt | |
| CN106868323A (en) | A kind of method that indium is extracted from discarded liquid crystal display panel | |
| CN110342465B (en) | Method for recovering indium tin oxide and waste acid from ITO etching waste liquid | |
| Chen et al. | Research status of recovery of indium from indium-tin oxide (ITO) targets | |
| CN204185537U (en) | A kind of retrieving arrangement of tin indium oxide | |
| CN102992551A (en) | Method for treating high-concentration wastewater efficiently | |
| Zhuang et al. | Thermal treatment of liquid crystal display panel scraps: the metals migration and potential environmental risk in solid residue | |
| CN113005307A (en) | Method for recycling indium in waste liquid crystal panel by taking self-pyrolysis residue as reducing agent | |
| CN109517991B (en) | Method for recovering metal indium in waste liquid crystal display | |
| CN203750536U (en) | Electric heating glass reaction kettle | |
| CN203411428U (en) | Device for recovering organic solvent from organic wastewater in electronic manufacturing industry | |
| CN106734107B (en) | A kind of recovery method as resource of waste liquid crystal display screen panel glass |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150408 |