CN113045181A - Method for washing platinum channel in cover plate and substrate glass manufacturing - Google Patents
Method for washing platinum channel in cover plate and substrate glass manufacturing Download PDFInfo
- Publication number
- CN113045181A CN113045181A CN202110352608.0A CN202110352608A CN113045181A CN 113045181 A CN113045181 A CN 113045181A CN 202110352608 A CN202110352608 A CN 202110352608A CN 113045181 A CN113045181 A CN 113045181A
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- CN
- China
- Prior art keywords
- liquid level
- amount
- cover plate
- platinum
- washing
- 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.)
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- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 title claims abstract description 59
- 229910052697 platinum Inorganic materials 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000011521 glass Substances 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 238000005406 washing Methods 0.000 title claims abstract description 15
- 239000000758 substrate Substances 0.000 title claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 58
- 239000000463 material Substances 0.000 claims abstract description 12
- 238000000605 extraction Methods 0.000 claims abstract description 11
- 239000006060 molten glass Substances 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims description 8
- 238000011010 flushing procedure Methods 0.000 claims description 4
- 239000005357 flat glass Substances 0.000 claims 2
- 230000003247 decreasing effect Effects 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 3
- MUMZUERVLWJKNR-UHFFFAOYSA-N oxoplatinum Chemical compound [Pt]=O MUMZUERVLWJKNR-UHFFFAOYSA-N 0.000 abstract description 2
- 229910003446 platinum oxide Inorganic materials 0.000 abstract description 2
- 229910000629 Rh alloy Inorganic materials 0.000 description 3
- PXXKQOPKNFECSZ-UHFFFAOYSA-N platinum rhodium Chemical compound [Rh].[Pt] PXXKQOPKNFECSZ-UHFFFAOYSA-N 0.000 description 3
- 238000005352 clarification Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 235000012149 noodles Nutrition 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/18—Stirring devices; Homogenisation
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B7/00—Distributors for the molten glass; Means for taking-off charges of molten glass; Producing the gob, e.g. controlling the gob shape, weight or delivery tact
- C03B7/005—Controlling, regulating or measuring
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B7/00—Distributors for the molten glass; Means for taking-off charges of molten glass; Producing the gob, e.g. controlling the gob shape, weight or delivery tact
- C03B7/01—Means for taking-off charges of molten glass
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a method for washing a platinum channel in the manufacture of cover plate and substrate glass, which comprises the following steps of; step one, under the condition of keeping the extraction amount unchanged, reducing the generation amount of the fed materials to reduce the liquid level of molten glass by 75-85 mm; step two, keeping the height of the liquid level of the reduced glass liquid for 3-4 hours; and step three, the liquid level of the glass liquid is restored to the initial height. The formed platinum oxide layer can be washed clean, and the occurrence of platinum defect points after the platinum channel runs for a long time is reduced.
Description
Technical Field
The invention belongs to the field of cover plate and substrate glass manufacturing, and relates to a method for flushing a platinum channel in cover plate and substrate glass manufacturing.
Background
In the manufacture of cover plate and substrate glass, a platinum channel is a common device for glass liquid to flow through, the main material is platinum or platinum-rhodium alloy, the platinum and the platinum-rhodium alloy are oxidized in a large amount in a high-temperature and high-humidity environment, a large amount of oxidation layers are mainly formed at a liquid surface line part and a free space part, the platinum and the platinum-rhodium alloy are in a saturated state for a long time and are slowly precipitated in glass, a large amount of platinum stones can be formed, and no effective control method exists at present for the stones.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a method for washing a platinum channel in the manufacture of cover plate and substrate glass, which can wash the formed platinum oxide layer cleanly and reduce the occurrence of platinum defect points after the platinum channel runs for a long time.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
a method for washing a platinum channel in the manufacture of cover plate and substrate glass comprises the following steps;
step one, under the condition of keeping the extraction amount unchanged, reducing the generation amount of the fed materials to reduce the liquid level of molten glass by 75-85 mm;
step two, keeping the height of the liquid level of the reduced glass liquid for 3-4 hours;
and step three, the liquid level of the glass liquid is restored to the initial height.
Preferably, in the step one, the production amount of the fed materials is reduced by 50-70 kg/h.
Preferably, in the first step, the liquid level lowering speed of the molten glass is 1.5 mm/h.
Preferably, in the first step, the liquid level descending speed and height are monitored through a liquid level port of the channel liquid level measuring part.
Preferably, in the second step, the amount of the feed product is increased to be the same as the amount of the feed product withdrawn, and the liquid level is kept constant.
Preferably, in the third step, the amount of the feed to be produced is increased to raise the liquid level while keeping the amount of the feed to be drawn constant.
Preferably, during the rinsing process, the cell furnace temperature is adjusted by the electrode current.
Furthermore, the electrode current adjustment amount is less than 20%, and the electrode voltage is less than 1000V.
Preferably, the temperature at the top of the clarification section during flushing is < 1700 ℃.
Preferably, during the flushing process, if the extraction amount is higher than a set value, the temperature of the cooling section and the temperature of the feeding pipe are reduced, and if the extraction amount is lower than the set value, the temperature of the cooling section and the temperature of the feeding pipe are increased.
Compared with the prior art, the invention has the following beneficial effects:
according to the method, the liquid level is rapidly raised and lowered by controlling the generation amount of the fed materials, the crystallization state of the original liquid level part is washed, the formed platinum oxidation layer can be washed clean, the occurrence of platinum under-points after the platinum channel is operated for a long time is reduced, the success probability of platinum stones is 60-70%, and individual lines need to be washed repeatedly for 3-4 times; meanwhile, the feeding amount is greatly adjusted in the washing process, so that the convection mode in the tank furnace is changed, new dynamic balance is established, and bubbles or stripes are obviously improved.
Drawings
FIG. 1 is a schematic view of the present invention after the liquid level is lowered.
Wherein: 1-liquid noodle; 2-platinum channel; 3-glass liquid; 4-liquid level port.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
the invention relates to a method for washing a platinum channel in the manufacture of cover plate and substrate glass, which comprises the following steps of;
1. the method and the process for the washing process of the platinum channel 2 are as follows:
1.1, the liquid level of the molten glass 3 is reduced by 75-85mm by reducing the feeding amount and the difference between the feeding amount and the discharging amount, and in the embodiment, the liquid level is reduced by 80 mm.
The main implementation mode is as follows:
1) the production amount of the feed is reduced by 50-70kg/h, in this example, the production amount of the feed is reduced by 60 kg/h.
2) Keeping the normal extraction amount unchanged.
3) The liquid level descending speed is 1.5mm/h according to the difference between the generation amount of the fed materials and the discharged materials, so that the liquid level height is reduced by 80 mm.
4) The liquid level descending speed and height are monitored through a liquid level port 4 at the liquid level measuring part of the channel.
1.2, keeping the reduced liquid level for 3-5 hours.
1) The production amount of the feeding is increased to be the same as the extraction amount, the balance of the feeding and the output is kept, and the liquid level is kept.
2) According to the fact that the residence time of the glass liquid 3 in the cooling section is 2 hours, the glass liquid is kept for 3-5 hours to fully flow out the washed glass, and in the embodiment, the liquid level after being lowered is kept for 4 hours.
As shown in FIG. 1, the falling speed and height of the liquid level can be monitored through a liquid level port 4 at the liquid level measuring part of the channel, and the liquid level of the molten glass 3 is 80mm lower than the liquid level line 1.
And 1.3, restoring the liquid level to the normal control liquid level.
After the 4-hour holding period, the material feeding amount is increased to raise and restore the liquid level
1) The production of the feed is increased, the increase of the production of the feed is 50-70kg/h, and the extraction amount is kept to be normally controlled.
2) The liquid level rises to the normal level line 1 at a rate of 1.5 mm/h.
3) The operation is finished when the liquid level rises to the normal liquid level line 1.
2. The process and quality control of the washing process of the platinum channel 2.
1) A tank furnace.
The temperature of the tank furnace is normally controlled, electrode current is adopted for adjustment in time, the adjustment amount of the electrode current is less than 20%, the electrode voltage is less than 1000V, and the temperature of a channel cavity above the liquid level can be adjusted in a matching manner.
2) A channel.
The top temperature of the clarification section is less than 1700 ℃. The power of the stirring tank is maintained in a normal use power range, and the rotating speed of the stirring rod is not adjusted. The temperature of the cooling section and the temperature of the feeding pipe are adjusted by taking the extraction amount as a standard, if the extraction amount is higher than a set value, the temperature of the cooling section and the temperature of the feeding pipe are reduced, and if the extraction amount is lower than the set value, the temperature of the cooling section and the temperature of the feeding pipe are increased.
3) And (5) molding.
And ensuring the derived quantity data in the working process.
The method has a platinum calculus success probability of 60-70%, and the individual line body needs to be washed repeatedly for 3-4 times. Meanwhile, the feeding amount is greatly adjusted in the washing process, so that the convection mode in the tank furnace is changed, new dynamic balance is established, and bubbles or stripes are obviously improved.
The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (10)
1. A method for washing a platinum channel in the manufacture of cover plate and substrate glass is characterized by comprising the following steps;
step one, under the condition of keeping the extraction amount unchanged, reducing the generation amount of the fed materials to reduce the liquid level of the molten glass (3) by 75-85 mm;
step two, keeping the height of the liquid level of the glass liquid (3) after reduction for 3-4 hours;
and step three, the liquid level of the molten glass (3) is restored to the initial height.
2. The method for washing platinum channels in manufacturing cover plate and base plate glass according to claim 1, wherein in the first step, the production amount of the fed materials is reduced by 50-70 kg/h.
3. The method for washing the platinum channel in the manufacture of cover plate and substrate glass according to claim 1, wherein in the first step, the liquid level of the molten glass (3) descends at a speed of 1.5 mm/h.
4. The method for washing the platinum channel in the manufacture of cover plate and substrate glass according to claim 1, wherein in the first step, the liquid level descending speed and height are monitored through a liquid level port (4) of a channel liquid level measuring part.
5. The method for flushing a platinum channel in manufacturing cover plate and substrate glass according to claim 1, wherein in the second step, the amount of the feed material is increased to be the same as the amount of the lead-out material, and the liquid level is kept constant.
6. The method for washing a platinum channel in manufacturing cover plate and base plate glass according to claim 1, wherein in the third step, the amount of feed is increased to raise the liquid level while keeping the amount of lead-out constant.
7. The method of claim 1, wherein the temperature of the cell is adjusted by the electrode current during the rinsing process.
8. The method of claim 7, wherein the electrode current is adjusted by less than 20% and the electrode voltage is less than 1000V.
9. The method of claim 1, wherein the top temperature of the fining section is less than 1700 ℃ during the rinsing step.
10. The method of claim 1, wherein during the rinsing step, the temperatures of the cooling section and the supply pipe are decreased if the draw amount is higher than a predetermined value, and the temperatures of the cooling section and the supply pipe are increased if the draw amount is lower than the predetermined value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110352608.0A CN113045181A (en) | 2021-03-31 | 2021-03-31 | Method for washing platinum channel in cover plate and substrate glass manufacturing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110352608.0A CN113045181A (en) | 2021-03-31 | 2021-03-31 | Method for washing platinum channel in cover plate and substrate glass manufacturing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113045181A true CN113045181A (en) | 2021-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110352608.0A Pending CN113045181A (en) | 2021-03-31 | 2021-03-31 | Method for washing platinum channel in cover plate and substrate glass manufacturing |
Country Status (1)
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| CN (1) | CN113045181A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113493296A (en) * | 2021-07-07 | 2021-10-12 | 安徽汉柔光电科技有限公司 | Method for changing convection of platinum channel in manufacturing of ultrathin flexible glass |
| CN113754247A (en) * | 2021-09-24 | 2021-12-07 | 芜湖东旭光电科技有限公司 | Method for producing glass substrate by utilizing platinum channel |
| CN115124219A (en) * | 2022-07-19 | 2022-09-30 | 河北光兴半导体技术有限公司 | Method for eliminating glass defects |
| CN115490412A (en) * | 2022-08-16 | 2022-12-20 | 河北光兴半导体技术有限公司 | Method for eliminating glass stone |
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| US20030015000A1 (en) * | 2001-07-18 | 2003-01-23 | Hayes James C. | Method for controlling foam production in reduced pressure fining |
| US20050109062A1 (en) * | 2003-10-14 | 2005-05-26 | Thomas Stelle | Device and method for the production of high-melting glass materials or glass ceramic materials or glass material or glass ceramic material |
| WO2012148411A1 (en) * | 2011-04-29 | 2012-11-01 | Corning Incorporated | Apparatus and method for purging contaminants from a glass making system |
| CN110482839A (en) * | 2019-08-12 | 2019-11-22 | 东旭(锦州)精密光电科技有限公司 | The method for reducing glass stone in precious metal glass material path |
| CN110526554A (en) * | 2019-07-25 | 2019-12-03 | 彩虹集团（邵阳）特种玻璃有限公司 | A kind of method of cover-plate glass stirring rod cleaning |
-
2021
- 2021-03-31 CN CN202110352608.0A patent/CN113045181A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20030015000A1 (en) * | 2001-07-18 | 2003-01-23 | Hayes James C. | Method for controlling foam production in reduced pressure fining |
| US20050109062A1 (en) * | 2003-10-14 | 2005-05-26 | Thomas Stelle | Device and method for the production of high-melting glass materials or glass ceramic materials or glass material or glass ceramic material |
| WO2012148411A1 (en) * | 2011-04-29 | 2012-11-01 | Corning Incorporated | Apparatus and method for purging contaminants from a glass making system |
| CN110526554A (en) * | 2019-07-25 | 2019-12-03 | 彩虹集团（邵阳）特种玻璃有限公司 | A kind of method of cover-plate glass stirring rod cleaning |
| CN110482839A (en) * | 2019-08-12 | 2019-11-22 | 东旭(锦州)精密光电科技有限公司 | The method for reducing glass stone in precious metal glass material path |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113493296A (en) * | 2021-07-07 | 2021-10-12 | 安徽汉柔光电科技有限公司 | Method for changing convection of platinum channel in manufacturing of ultrathin flexible glass |
| CN113754247A (en) * | 2021-09-24 | 2021-12-07 | 芜湖东旭光电科技有限公司 | Method for producing glass substrate by utilizing platinum channel |
| CN113754247B (en) * | 2021-09-24 | 2023-01-06 | 芜湖东旭光电科技有限公司 | Method for producing glass substrate by utilizing platinum channel |
| CN115124219A (en) * | 2022-07-19 | 2022-09-30 | 河北光兴半导体技术有限公司 | Method for eliminating glass defects |
| CN115124219B (en) * | 2022-07-19 | 2023-10-20 | 河北光兴半导体技术有限公司 | Method for eliminating glass defects |
| CN115490412A (en) * | 2022-08-16 | 2022-12-20 | 河北光兴半导体技术有限公司 | Method for eliminating glass stone |
| CN115490412B (en) * | 2022-08-16 | 2023-12-12 | 河北光兴半导体技术有限公司 | Method for eliminating glass calculus |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20210629 |