CN101817013A - Harmless treatment method for cathode ray tube - Google Patents
Harmless treatment method for cathode ray tube Download PDFInfo
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- CN101817013A CN101817013A CN 201010167208 CN201010167208A CN101817013A CN 101817013 A CN101817013 A CN 101817013A CN 201010167208 CN201010167208 CN 201010167208 CN 201010167208 A CN201010167208 A CN 201010167208A CN 101817013 A CN101817013 A CN 101817013A
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- ray tube
- cathode
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- cathode ray
- harmless treatment
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- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
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Abstract
The invention relates to the field of waste treatment, in particular to a treatment method for a cathode ray tube (CRT). A harmless treatment method for the cathode ray tube comprises the three steps of preliminary treatment, cutting treatment and post treatment, wherein the second step of cutting treatment comprises the steps of: melting and connecting colloids between a leaded glass cone and a lead-free glass screen of the cathode ray tube in a heating manner and completely separating the leaded glass cone from the lead-free glass screen. The method has the advantages of achieving the safe, environmentally-friendly, fast and economic treatment of the cathode ray tube and extracting products having regenerated economic values from the cathode ray tube, and maximally reducing pollution, recycling the wastes and making the whole treatment process simple and fast in operation by the steps of melting and connecting the colloids between the leaded glass cone and the lead-free glass screen of the cathode ray tube in the heating manner, completely separating the leaded glass cone from the lead-free glass screen, maintaining the integrity of the leaded glass cone and the lead-free glass screen, and performing post treatment, classification treatment, harmless treatment on fluorescent powder, and recycling treatment on the leaded glass cone and the lead-free glass screen.
Description
Technical field
The present invention relates to the processing method in offal treatment field, particularly cathode ray tube (CRT).
Background technology
At present because the quick innovation of sustained economic development and technology, the update cycle of electrical equipment such as computer and TV shortens dramatically, eliminate a large amount of cathode-ray tube (CRT down, be commonly called as kinescope), how to select suitable technique means safety, environmental protection for use, handle the difficult problem that cathode ray tube (CRT) under eliminating becomes industry fast.Usual way is arbitrarily to abandon mostly, has not only caused the waste of resource, and contains a large amount of mercury in the fluorescent material in the cathode ray tube (CRT), has very big potential safety hazard, causes serious environmental to pollute.
Summary of the invention
The objective of the invention is can't environmental protection treatment at cathode-ray tube problem, a kind of harmless treatment method for cathode ray tube is provided, method is simple, easy operating, the discarded object reproducible utilization, environment friendly and pollution-free.
The object of the present invention is achieved like this, and harmless treatment method for cathode ray tube comprises pre-treatment, cutting process and three steps of post processing:
The wherein second step cutting process: heat fused connects the colloid between leaded glass awl of cathode-ray tube and the unleaded glass screen, and leaded glass awl is separated fully with unleaded glass screen.
Described first step pre-treatment: abolish the cathode-ray tube vacuum, take off electron gun, cut off anti-riot steel band and dismounting;
The second step cutting process: adopt the colloid between leaded glass awl of electrical heating fusing connection cathode-ray tube and the unleaded glass screen, leaded glass awl is separated fully with unleaded glass screen;
The 3rd step post processing: cathode-ray tube Taper Pipe, fluorescent material are handled respectively, and leaded glass awl is delivered to cathode-ray tube factory with the classification of unleaded glass screen and is carried out resource circulation utilization.
The described second step cutting process: adopt heater strip to be wrapped in the groove of cathode-ray tube, 30-120 second is heated in energising, has a power failure, unclamp heater strip, hear that the sound that splits gets final product, if there is not the sound that splits, check and continue and heat, continue to be no more than 90 seconds heat time heating time, until hearing the sound that splits.
Heater strip in the described second step cutting process adopts heater strips such as chromium silk, molybdenum filament, tungsten filament or galvanized wire; Preferred chromium silk wherein, specification is ∮ 2mm, length is greater than the girth of cathode-ray external diameter of pipe; Energising voltage is 380V.
Described the 3rd step post processing: the Taper Pipe of cathode-ray tube is smashed back packing, remove cathode shield, remove fluorescent material clean and collect fluorescent material, smash the fluorescent screen packing with dust catcher; Fluorescent material adopts the mode of detoxifcation, curing, security landfill to carry out harmless treatment; Leaded glass awl is delivered to cathode-ray tube factory with the classification of unleaded glass screen and is carried out resource circulation utilization.
Described the 3rd step post processing: the fluorescent material of collecting adopts the ferrous sulfate detoxifcation, is cured with lime, cement then, and the waste residue after will solidifying at last carries out harmless treatment in the mode of security landfill.
Advantage of the present invention is to have realized safety, environmental protection, quick, economic cathode-ray tube, more can therefrom extract the product with regeneration economic worth.The key of harmless treatment method for cathode ray tube of the present invention is a mode of cutting apart leaded glass awl of cathode-ray tube and unleaded glass screen flow process, for connect the colloid between leaded glass awl of cathode-ray tube and the unleaded glass screen by the mode of heating fusing, leaded glass awl is separated fully with unleaded glass screen, and keep its integrality, carry out post processing again, classification is handled, fluorescent material carries out harmless treatment, leaded glass awl is recycled with unleaded glass screen, not only at utmost reduce and pollute, and the refuse cycling and reutilization, the entire process process operation is simple, fast.
The specific embodiment
For the present invention there being a more detailed understanding, be further described below in conjunction with specific embodiment, but the present invention is not subjected to the restriction of this scope.
Embodiment 1
Harmless treatment method for cathode ray tube comprises pre-treatment, cutting process and three steps of post processing:
First step pre-treatment: the cathode-ray tube that at first will give up is transported to be disassembled in the operation area, and cathode-ray tube removed to operating desk, the personnel of disassembling hold the cathode ray tube (CRT) electron gun, break electron gun and cathode ray tube (CRT) coupling part gently into pieces with hand hammer, abolish the cathode ray tube (CRT) vacuum, take off electron gun, cut off anti-riot steel band and dismounting with the angle grinding machine again;
The second step cutting process:
1) (the chromium silk: specification is ∮ 2mm heater strip; Length is greater than the girth of cathode-ray external diameter of pipe; Energising voltage is 380V) be wrapped in the weld recess place of display, at the electrical heating wire infall, must prevent that heater strip from intersecting back contact and fusing.As adopting take-up device one side heater strip to place the weld seam top, the opposite side heater strip places the weld seam below, can add the insulation porcelain ring in the crosspoint in case of necessity.
2) turn take-up device makes heater strip be close to weld recess, prepares heating.
3) check that power line contacts whether good, the contactless back of heater strip infall (having filled up dead ring), the energising heating.
According to the heating elongation, constantly the turn take-up device is strained heater strip when 4) heating.
5) heating current, heat time heating time, the large and small setting according to kinescope is input in the timer before disassembling.
Cathode-ray tube is the computer kinescope in this example: heating current: 40-50A; Heat time heating time: 40 seconds.
6) after heating was finished, heater had a power failure automatically, and after the power failure, reverse rotation immediately connects tight device, unclamps heater strip, prevented because of the back heater strip shrinkage that the has a power failure heater strip that breaks.
7) have a power failure the back after about 10 seconds,, prove that glass successfully separates if hear the sound that glass splits.When can't hear sound, check that at first glass has flawless, it is rapid to repeat steps 3-6 during flawless, prolongs heat time heating time, should not surpass 90 seconds but prolong heat time heating time, till hearing sound.
8) heater strip is removed from display, touched the place, crack, separate up to glass with hand hammer.
The 3rd step post processing: the leaded glass awl of CRT (Taper Pipe) is shielded (fluorescent screen) with unleaded glass separate, the CRT Taper Pipe is smashed the back packing; Remove cathode shield, with dust catcher fluorescent material is removed totally and collected to fluorescent material, the fluorescent material of collecting adopts the ferrous sulfate detoxifcation, is cured with lime, cement then, and the waste residue after will solidifying at last carries out harmless treatment in the mode of security landfill; Glass screen, the classification of glass awl are packed; Leaded glass awl, unleaded glass screen that class wrapping is good are delivered to cathode-ray tube factory and are reclaimed comprehensive utilization.
Embodiment 2
The method for innocent treatment of cathode-ray tube, comprise pre-treatment, cutting process and three steps of post processing, wherein the first step is identical with embodiment 1 with the 3rd step, what the second step cutting process was different is that the heater strip that adopts is that the molybdenum filament specification is ∮ 2mm, and cathode-ray tube is 17-25 inch kinescopes in this example: heating current: 60-70A; Heat time heating time: 90 seconds.
Embodiment 3
The method for innocent treatment of cathode-ray tube, comprise pre-treatment, cutting process and three steps of post processing, wherein the first step is identical with embodiment 1 with the 3rd step, what the second step cutting process was different is that the heater strip that adopts is that the tungsten filament specification is ∮ 2mm, and cathode-ray tube is the above kinescopes of 25 inch in this example: heating current: 70-80A; Heat time heating time: 120 seconds.
Embodiment 4
The method for innocent treatment of cathode-ray tube, comprise pre-treatment, cutting process and three steps of post processing, wherein the first step is identical with embodiment 1 with the 3rd step, what the second step cutting process was different is that the heater strip that adopts is that the galvanized wire specification is ∮ 2mm, and cathode-ray tube is the above kinescopes of 25 inch in this example: heating current: 70-80A; Heat time heating time: 120 seconds.
Claims (7)
1. harmless treatment method for cathode ray tube, it is characterized in that: comprise pre-treatment, cutting process and three steps of post processing, the wherein second step cutting process: heat fused connects the colloid between leaded glass awl of cathode-ray tube and the unleaded glass screen, and leaded glass awl is separated fully with unleaded glass screen.
2. harmless treatment method for cathode ray tube according to claim 1 is characterized in that: first step pre-treatment: abolish the cathode-ray tube vacuum, take off electron gun, cut off anti-riot steel band and dismounting;
The second step cutting process: adopt the colloid between leaded glass awl of electrical heating fusing connection cathode-ray tube and the unleaded glass screen, leaded glass awl is separated fully with unleaded glass screen;
The 3rd step post processing: cathode-ray tube Taper Pipe, fluorescent material are handled respectively, and leaded glass awl is delivered to cathode-ray tube factory with the classification of unleaded glass screen and is carried out resource circulation utilization.
3. harmless treatment method for cathode ray tube according to claim 1 and 2, it is characterized in that: the described second step cutting process: adopt heater strip to be wrapped in the groove of cathode-ray tube, 30-120 second is heated in energising, have a power failure, unclamp heater strip, hear that the sound that splits gets final product, if there is not the sound that splits, check and continue and heat, continue to be no more than 90 seconds heat time heating time, until hearing the sound that splits.
4. harmless treatment method for cathode ray tube according to claim 1 and 2 is characterized in that: the heater strip in the described second step cutting process adopts heater strips such as chromium silk, molybdenum filament, tungsten filament or galvanized wire.
5. harmless treatment method for cathode ray tube according to claim 1 and 2 is characterized in that: the heater strip in the described second step cutting process adopts the chromium silk, and specification is ∮ 2mm, and length is greater than the girth of cathode-ray external diameter of pipe; Energising voltage is 380V.
6. harmless treatment method for cathode ray tube according to claim 1 and 2, it is characterized in that: described the 3rd step post processing: the Taper Pipe of cathode-ray tube is smashed the back packing, remove cathode shield, remove fluorescent material clean and collect fluorescent material, smash the fluorescent screen packing with dust catcher; Fluorescent material adopts the mode of detoxifcation, curing, security landfill to carry out harmless treatment; Leaded glass awl and unleaded glass screen class wrapping, and deliver to cathode-ray tube factory and carry out resource circulation utilization.
7. harmless treatment method for cathode ray tube according to claim 6, it is characterized in that: described the 3rd step post processing: the fluorescent material of collecting adopts the ferrous sulfate detoxifcation, be cured with lime, cement then, the waste residue after will solidifying at last carries out harmless treatment in the mode of security landfill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010167208 CN101817013A (en) | 2010-05-10 | 2010-05-10 | Harmless treatment method for cathode ray tube |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010167208 CN101817013A (en) | 2010-05-10 | 2010-05-10 | Harmless treatment method for cathode ray tube |
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| CN101817013A true CN101817013A (en) | 2010-09-01 |
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| CN 201010167208 Pending CN101817013A (en) | 2010-05-10 | 2010-05-10 | Harmless treatment method for cathode ray tube |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014040332A1 (en) * | 2012-09-17 | 2014-03-20 | 广东省生态环境与土壤研究所 | Method for reutilization of lead from cathode-ray tube glass of lead-containing discarded electronic wastes |
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| JPH05151898A (en) * | 1991-11-29 | 1993-06-18 | Hitachi Plant Eng & Constr Co Ltd | Method for disassembling cathode ray tube |
| DE4414130A1 (en) * | 1994-04-22 | 1995-10-26 | Massoud Adib | Picture tube processing method e.g. for separating glass types in television tube recycling |
| CN1171984A (en) * | 1996-07-30 | 1998-02-04 | 松下电器产业株式会社 | Dismounting method and device for eletronic machine |
| JPH11267628A (en) * | 1998-03-23 | 1999-10-05 | Ebara Corp | Treatment of waste television |
| CN1444244A (en) * | 1998-09-09 | 2003-09-24 | 佳能株式会社 | Image display device and dissection processing method and element recovery method |
| CN1536604A (en) * | 2003-04-04 | 2004-10-13 | 秦文隆 | Resource formation treatment method of kinescope |
| CN101092281A (en) * | 2006-02-24 | 2007-12-26 | 河南安彩高科股份有限公司 | Method for recovering and using glass bulb of worn-out display tube |
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2010
- 2010-05-10 CN CN 201010167208 patent/CN101817013A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3839006A (en) * | 1973-03-01 | 1974-10-01 | J Pikor | Apparatus for cutting notch sensitive materials |
| JPH05151898A (en) * | 1991-11-29 | 1993-06-18 | Hitachi Plant Eng & Constr Co Ltd | Method for disassembling cathode ray tube |
| DE4414130A1 (en) * | 1994-04-22 | 1995-10-26 | Massoud Adib | Picture tube processing method e.g. for separating glass types in television tube recycling |
| CN1171984A (en) * | 1996-07-30 | 1998-02-04 | 松下电器产业株式会社 | Dismounting method and device for eletronic machine |
| JPH11267628A (en) * | 1998-03-23 | 1999-10-05 | Ebara Corp | Treatment of waste television |
| CN1444244A (en) * | 1998-09-09 | 2003-09-24 | 佳能株式会社 | Image display device and dissection processing method and element recovery method |
| CN1536604A (en) * | 2003-04-04 | 2004-10-13 | 秦文隆 | Resource formation treatment method of kinescope |
| CN101092281A (en) * | 2006-02-24 | 2007-12-26 | 河南安彩高科股份有限公司 | Method for recovering and using glass bulb of worn-out display tube |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014040332A1 (en) * | 2012-09-17 | 2014-03-20 | 广东省生态环境与土壤研究所 | Method for reutilization of lead from cathode-ray tube glass of lead-containing discarded electronic wastes |
| US9650693B2 (en) | 2012-09-17 | 2017-05-16 | Guangdong Institute Of Eco-Environmental Science & Technology | Method for recovering lead from lead-containing discarded electronic waste cathode ray tube glass |
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Application publication date: 20100901 |