CN110922030A - Method and device for removing bubbles of molten glass - Google Patents
Method and device for removing bubbles of molten glass Download PDFInfo
- Publication number
- CN110922030A CN110922030A CN201911233960.1A CN201911233960A CN110922030A CN 110922030 A CN110922030 A CN 110922030A CN 201911233960 A CN201911233960 A CN 201911233960A CN 110922030 A CN110922030 A CN 110922030A
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- CN
- China
- Prior art keywords
- platinum
- glass
- electric control
- molten glass
- channel
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- 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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- 239000006060 molten glass Substances 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 19
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 116
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 58
- 238000002844 melting Methods 0.000 claims abstract description 46
- 230000008018 melting Effects 0.000 claims abstract description 46
- 239000011521 glass Substances 0.000 claims abstract description 29
- 238000005352 clarification Methods 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 10
- 239000000156 glass melt Substances 0.000 abstract description 11
- 239000007789 gas Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 239000001301 oxygen Substances 0.000 abstract description 3
- 229910052760 oxygen Inorganic materials 0.000 abstract description 3
- -1 oxygen ion Chemical class 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 150000001768 cations Chemical class 0.000 abstract description 2
- 238000005868 electrolysis reaction Methods 0.000 abstract description 2
- 239000005304 optical glass Substances 0.000 abstract description 2
- 238000005192 partition Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000000265 homogenisation Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- 230000005587 bubbling Effects 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000007500 overflow downdraw method Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000746 purification Methods 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
- 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
- C03B5/225—Refining
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Melting And Manufacturing (AREA)
Abstract
The invention belongs to the technical field of optical glass, and discloses a defoaming method and a defoaming device for molten glass, wherein a direct current electric control device is arranged in an electric control system of a glass melting furnace, the negative electrode of the direct current electric control device is electrically connected with platinum in a platinum channel, and the glass melting furnace is connected with the platinum channel; in the embodiment, the platinum directly contacted with the glass is contacted with the negative electrode charge, so that the platinum has negative charge, and finally, the glass in the platinum channel has negative charge, thereby preventing the cation in the platinum channel from being contacted with the negative oxygen ion, fundamentally preventing the formation of gas, and achieving the purpose of eliminating bubbles; in addition, the energization of the glass melt in the platinum channel also effects the electrolysis of the glass melt, thereby decomposing bubbles that have been formed in the glass melt.
Description
Technical Field
The invention relates to the technical field of optical glass manufacturing, in particular to a defoaming method and a defoaming device for molten glass.
Background
Melting, fining and platinum channel homogenizing conveying methods are generally applied in glass manufacturing. In the method, the homogenizing and conveying function of the platinum channel is very important, the platinum channel is generally homogenized in an electric heating mode, the aim is to make the molten glass more uniform and avoid generating bubbles, impurities and the like, but the melting process of the glass completed in an indirect electric heating mode is a pure physical heating process, and except platinum, a heating body is not in contact with the glass; in long-term production, the temperature at the inlet of the platinum channel is very high, so that bubbles can not be completely eliminated only by a temperature equalization method; the device (CN202508971U) for removing bubbles from molten glass based on overflow downdraw method provided by chinese patent document is shown in fig. 1, and comprises a melting tank (1), a clarifying tank (2), and a platinum channel (3) connected in sequence, and is characterized in that: at least one group of serially connected U-shaped connecting pipelines (3-1) and air pressure control chambers (3-2) are additionally arranged at the inlet of the platinum channel (3), the outlet end of each air pressure control chamber (3-2) is communicated with the platinum channel (3), a negative pressure interface (3-3) is arranged in each air pressure control chamber (3-2), the technical scheme is based on the improvement of the structure of the platinum channel, and the U-shaped connecting pipelines are adopted to play the roles of diversion, mixing and homogenization, and the principle is as follows: the flow direction of the molten glass in the connecting pipe is changed rapidly, thereby achieving the effects of natural mixing and homogenization. Meanwhile, an air pressure control chamber is connected in series with the outlet end of the U-shaped connecting pipeline, so that molten glass liquid in the natural homogenization process flows out at the inlet end of the air pressure control chamber, and bubbles contained in the molten glass liquid can partially escape along with the flowing out process; in the process, a micro negative pressure environment is applied to the air pressure controllable box body at the same time, so that bubbles contained in the molten glass can continuously escape at the beginning of the bubbling and in a section of pipeline behind the bubbling, the overall bubble removing effect is optimized, and the purpose of conveying high-quality molten glass is finally achieved; although the technical scheme can effectively reduce bubbles in the molten glass, the volume of the kiln is increased, and more importantly, the technical scheme avoids bubble products and fundamentally eliminates the bubbles.
Disclosure of Invention
In order to solve the problems of the prior art, the invention provides a method and a device for removing bubbles of molten glass melt, which fundamentally prevent the generation of bubbles and achieve the aim of removing bubbles by purification.
In order to achieve the above object, a first technical solution of the present invention is as follows:
a method for removing bubbles from molten glass is characterized in that a direct current electric control device is arranged in an electric control system of a glass melting furnace, the cathode of the direct current electric control device is electrically connected with platinum in a platinum channel, and the glass melting furnace is connected with the platinum channel.
As another preferred technical scheme of the invention, the platinum channel is of an S-shaped structure.
As another preferable technical solution of the present invention, the glass melting furnace includes a melting tank and a clarification tank, the melting tank is communicated with the clarification tank through a tank type channel at the bottom of the melting tank, a heating device is arranged outside the tank type channel, and an exhaust hole is arranged at the upper part of the tank type channel.
The other technical scheme of the invention is as follows:
the bubble removing device comprises a glass melting furnace, an electric control system and a platinum channel, wherein the electric control system comprises a direct current electric control device and an alternating current electric control device, the glass melting furnace comprises a melting tank and a clarification tank, the alternating current electric control device is respectively connected with the melting tank and the clarification tank, the platinum channel is connected with a discharge hole of the clarification tank, and the direct current electric control device is connected with platinum in the platinum channel.
In another preferred embodiment of the present invention, the melting tank is communicated with the clarifier through a tank-type passage at the bottom of the melting tank.
As another preferable technical solution of the present invention, a heating device is disposed outside the box type passage, and the heating device is connected to the ac electric control device.
As another preferable aspect of the present invention, an exhaust hole is provided in an upper portion of the box type passage.
The technical scheme of the embodiment of the invention has the beneficial effects that:
1. there are many carbonate and silicate components which are easily decomposed at high temperature in the glass raw material, and these components will generate a large amount of CO in the process of melting at high temperature2And SO2Equal gas, and the technical method provided by the embodiment of the inventionThe negative electrode of the direct current electric control device is electrically connected with platinum in a platinum channel, the glass melting furnace is connected with the platinum channel, and the platinum directly contacted with the glass is connected with the negative electrode, so that the platinum is provided with negative charges, the positive charge ions and the negative oxygen ions in the molten glass are prevented from being combined, the purpose of preventing gas from being formed is finally achieved, and the generation of gas is fundamentally prevented;
2. the platinum channel provided by the embodiment of the invention is of an S-shaped structure, and the structure can increase the contact amount of molten glass and platinum on one hand, and on the other hand, the platinum channel of the S-shaped structure can improve the uniformity of the molten glass, and meanwhile, bubbles in the molten glass are removed, and the quality of the molten glass is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view of an apparatus for defoaming molten glass based on an overflow downdraw method;
FIG. 2 is a schematic view of a frame structure of a defoaming device for molten glass according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
In the usual case of the use of a magnetic tape,the raw material of glass contains a plurality of carbonate and silicate components which are easy to decompose at high temperature, and during the process of high-temperature melting, the components can generate a large amount of CO2And SO2And the like.
The embodiment of the invention provides a bubble removing device for molten glass melt, which is shown in a reference figure 2 and comprises a glass melting furnace, an electric control system and a platinum channel, wherein the glass melting furnace comprises a melting tank and a clarification tank, the electric control system comprises a direct current electric control device and an alternating current electric control device, the alternating current electric control device is respectively connected with the melting tank and the clarification tank, the platinum channel is connected with a discharge hole of the clarification tank, and the direct current electric control device is connected with platinum in the platinum channel; in this embodiment, a partition plate is disposed between the melting tank and the clarification tank, the partition plate is of a hollow structure, and simultaneously, the melting tank is communicated with the clarification tank through a box-type channel at the bottom of the melting tank, an exhaust hole is disposed at the upper part of the box-type channel, the box-type channel is connected with the partition plate, the exhaust hole is communicated with the hollow structure in the partition plate, when the glass melt in the melting tank flows through the box-type channel, bubbles in the glass melt are discharged through the exhaust hole at the upper part of the box-type channel, specifically, the exhaust hole is a one-way exhaust hole, so that preliminary discharge of bubbles in the molten glass melt is realized, in addition, the glass melting furnace is divided into the melting tank and the clarification tank by the partition plate, and the purpose of purifying the molten glass melt can be achieved, under normal conditions, the density of impurities is less than that the glass melt, when the glass, impurities float on the surface of the molten glass, the molten glass at the bottom of the melting tank is relatively clean on the one hand, the molten glass is relatively good in melting degree on the other hand, the molten glass entering the clarification tank through the box type channel is completely molten, bubbles in the molten glass in the clarification tank are further removed through further defoaming of the box type channel and the clarification tank, meanwhile, the quality of the molten glass is further optimized under the further melting of the clarification tank, and finally, when the molten glass is fed through the platinum channel, the molten glass is prevented from further generating gas in the molten glass through the platinum channel connected with negative charges, so that the purpose of supplying high-quality molten glass is achieved.
The heating device is arranged outside the box type channel and connected with the alternating current electric control device, and the solubility of gas in the glass melt with higher density is poorer along with the temperature rise of the melt, so that the defoaming speed of the glass melt in the box type channel is accelerated under the action of the heating device.
Specifically, in this embodiment, the platinum channel is in an S-shaped structure, which can increase the contact amount between the molten glass and platinum, and the platinum channel in the S-shaped structure can improve the uniformity of the molten glass, and meanwhile, remove bubbles in the molten glass, and improve the quality of the molten glass.
In the defoaming method for the defoaming device for the molten glass melt provided by the embodiment, the direct-current electric control device is arranged in an electric control system of the glass melting furnace, the cathode of the direct-current electric control device is electrically connected with platinum in a platinum channel, and the glass melting furnace is connected with the platinum channel; in the embodiment, the platinum directly contacted with the glass is contacted with the negative electrode charge, so that the platinum has negative charge, and finally, the glass in the platinum channel has negative charge, thereby preventing the cation in the platinum channel from being contacted with the negative oxygen ion, fundamentally preventing the formation of gas, and achieving the purpose of eliminating bubbles; in addition, the energization of the glass melt in the platinum channel also effects the electrolysis of the glass melt, thereby decomposing bubbles that have been formed in the glass melt.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. A method for removing bubbles from molten glass is characterized in that a direct current electric control device is arranged in an electric control system of a glass melting furnace, the negative electrode of the direct current electric control device is electrically connected with platinum in a platinum channel, and the glass melting furnace is connected with the platinum channel.
2. A method as defined in claim 1, wherein said platinum channel is of an S-shaped configuration.
3. A molten glass bath as defined in claim 1, wherein the glass melting furnace includes a melting tank and a clarifier, the melting tank is connected to the clarifier through a box-type channel at the bottom of the melting tank, a heating device is provided outside the box-type channel, and an exhaust hole is provided at the upper part of the box-type channel.
4. A bubble removing device for molten glass melt, which is characterized in that the bubble removing device removes bubbles of the molten glass melt by using the bubble removing method for the molten glass melt according to any one of claims 1 to 3, and comprises a glass melting furnace, an electric control system and a platinum channel, wherein the electric control system comprises a direct current electric control device and an alternating current electric control device, the glass melting furnace comprises a melting tank and a clarification tank, the alternating current electric control device is respectively connected with the melting tank and the clarification tank, the platinum channel is connected with a discharge hole of the clarification tank, and the direct current electric control device is connected with platinum in the platinum channel.
5. A molten glass melt defoaming apparatus as in claim 4 wherein said melting tank is in communication with said clarifier through a box-type channel in the bottom of said melting tank.
6. A molten glass bath as defined in claim 5, wherein a heating device is provided outside said box-type channel, said heating device being connected to said AC electric control device.
7. A molten glass bath as defined in claim 5, wherein a vent is provided in an upper portion of said box-type channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911233960.1A CN110922030A (en) | 2019-12-05 | 2019-12-05 | Method and device for removing bubbles of molten glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911233960.1A CN110922030A (en) | 2019-12-05 | 2019-12-05 | Method and device for removing bubbles of molten glass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110922030A true CN110922030A (en) | 2020-03-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911233960.1A Pending CN110922030A (en) | 2019-12-05 | 2019-12-05 | Method and device for removing bubbles of molten glass |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110922030A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113371996A (en) * | 2021-06-02 | 2021-09-10 | 山东玻纤集团股份有限公司 | Melting device is used in glass fiber production |
| CN116947298A (en) * | 2023-08-18 | 2023-10-27 | 本溪玉晶玻璃有限公司 | Ultra-large tonnage one-kiln two-line glass production line |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR921568A (en) * | 1942-07-10 | 1947-05-12 | Saint Gobain | Process and furnace for the manufacture of glass |
| CN1297854A (en) * | 1999-11-20 | 2001-06-06 | 肖特玻璃制造厂 | Method for improving quality of glass |
| CN101838099A (en) * | 2009-05-08 | 2010-09-22 | 河北东旭投资集团有限公司 | Method for homogenizing and defoaming molten glass and device thereof |
| CN202508971U (en) * | 2012-04-01 | 2012-10-31 | 东旭集团有限公司 | Device for removing molten glass bubble based on overflowing down drawing method |
| CN212246745U (en) * | 2019-12-05 | 2020-12-29 | 苏州卡利肯新光讯科技有限公司 | Device for removing bubbles of molten glass |
-
2019
- 2019-12-05 CN CN201911233960.1A patent/CN110922030A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR921568A (en) * | 1942-07-10 | 1947-05-12 | Saint Gobain | Process and furnace for the manufacture of glass |
| CN1297854A (en) * | 1999-11-20 | 2001-06-06 | 肖特玻璃制造厂 | Method for improving quality of glass |
| CN101838099A (en) * | 2009-05-08 | 2010-09-22 | 河北东旭投资集团有限公司 | Method for homogenizing and defoaming molten glass and device thereof |
| CN202508971U (en) * | 2012-04-01 | 2012-10-31 | 东旭集团有限公司 | Device for removing molten glass bubble based on overflowing down drawing method |
| CN212246745U (en) * | 2019-12-05 | 2020-12-29 | 苏州卡利肯新光讯科技有限公司 | Device for removing bubbles of molten glass |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113371996A (en) * | 2021-06-02 | 2021-09-10 | 山东玻纤集团股份有限公司 | Melting device is used in glass fiber production |
| CN113371996B (en) * | 2021-06-02 | 2023-04-28 | 山东玻纤集团股份有限公司 | Melting device for glass fiber production |
| CN116947298A (en) * | 2023-08-18 | 2023-10-27 | 本溪玉晶玻璃有限公司 | Ultra-large tonnage one-kiln two-line glass production line |
| CN116947298B (en) * | 2023-08-18 | 2024-02-27 | 本溪玉晶玻璃有限公司 | Ultra-large tonnage one-kiln two-line glass production line |
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