CN103395984B - Method for reducing microbubbles of alumina silicate glass - Google Patents
Method for reducing microbubbles of alumina silicate glass Download PDFInfo
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- CN103395984B CN103395984B CN201310355029.7A CN201310355029A CN103395984B CN 103395984 B CN103395984 B CN 103395984B CN 201310355029 A CN201310355029 A CN 201310355029A CN 103395984 B CN103395984 B CN 103395984B
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Abstract
The invention relates to a method for reducing microbubbles of a piece of alumina silicate glass. The optimal founding and homogenization effects are realized by special grain size distribution of glass batch, the alumina silicate glass with fewer bubbles and small diameter bubbles is obtained, and the use requirement of the special glass for electronic information display is met. Specifically, the granular size of the glass batch such as feldspar, silica sand, dolomite, limestone, sodium carbonate and mirabilite is controlled to be in a specific range, due to the optimization and matching of larger granular raw materials and smaller granular raw materials, the reaction homogeneity and completeness of the batch are realized, the optimal founding effect is realized, and the excellent alumina silicate glass with fewer bubbles and small diameter bubbles is obtained.
Description
Technical field
The present invention relates to the preparation method of alumina silicate glass, the particular level of granularity formula formula particularly by controlling admixtion realizes the method that alumina silicate glass microbubble reduces.
Background technology
In glass melting process, bubble is a kind of defect the most common, and it can affect the outward appearance of glasswork, transparency, physical strength and hardness etc., when remaining have the glass of some amount microbubble to show for electronic information time, will be fatal.
Summary of the invention
Object of the present invention is in order to solve the defect of the some amount microbubble of existing alumina silicate glass existence, the a kind of of proposition realizes the better technical scheme with homo-effect of founding with the specific grain size distribution of admixtion, obtains the alumina silicate glass that number of bubbles is few, bubble diameter is little.
The technical solution used in the present invention is as follows:
A kind of method reducing alumina silicate glass microbubble, comprise the alumina silicate glass admixtion be made up of following raw material: feldspar, silica sand, rhombspar, Wingdale, soda ash, saltcake, the component of the alumina silicate glass made is counted by the mass percent of oxide compound: SiO2 62 ~ 65wt.%; Al2O3 12 ~ 15wt.%; MgO 1 ~ 4wt.%; CaO 1 ~ 3wt.%; Na2O 11 ~ 15wt.%; K2O 1 ~ 3wt.%, is characterized in that: the raw material granularity grating mode prepared in the admixtion of alumina silicate glass is carried out according to following proportioning:
(1) feldspar: particle diameter is the 75wt.% that the feldspar amount of particles of 0.1 ~ 0.25mm accounts for total feldspar amount, particle diameter is the 25wt.% that the feldspar amount of particles of 0.4 ~ 0.55mm accounts for total feldspar amount;
(2) rhombspar: particle diameter is the 15wt.% that the dolomite particles consumption of 0.075 ~ 0.125mm accounts for total rhombspar amount, particle diameter is the 85wt.% that the dolomite particles consumption of 2.0 ~ 2.5mm accounts for total rhombspar amount;
(3) Wingdale: particle diameter is the 15wt.% that the limestone particle consumption of 0.08 ~ 0.15mm accounts for total Wingdale amount, particle diameter is the 85wt.% that the limestone particle consumption of 2.5 ~ 3.0mm accounts for total Wingdale amount;
(4) silica sand: particle diameter is the 90wt.% that the silica sand particles consumption of 0.1 ~ 1mm accounts for total silica sand amount, particle diameter is the 10wt.% that the silica sand particles consumption of 0.085 ~ 0.1mm accounts for total silica sand amount;
(5) soda ash: particle diameter is the 75wt.% that the soda ash amount of particles of 0.1 ~ 1mm accounts for total soda ash amount, particle diameter is the 25wt.% that the soda ash amount of particles of 0.055 ~ 0.1mm accounts for total soda ash amount;
(6) saltcake: particle diameter is the 90wt.% that the saltcake amount of particles of 0.1 ~ 1mm accounts for total saltcake amount, particle diameter is the 10wt.% that the saltcake amount of particles of 0.08 ~ 0.1mm accounts for total saltcake amount.
On the basis of technique scheme, following further technical scheme can be had:
The admixtion of described grain size distribution is fired according to the following steps:
(1) rise to 1630 DEG C with the temperature rise rate of 3 ~ 5 DEG C/min by room temperature, and be incubated 2 ~ 3 hours;
(2) be down to 1610 DEG C with the rate of temperature fall of 1 ~ 3 DEG C/min by 1630 DEG C, and be incubated 1.5 ~ 2 hours;
(3) at 1610 DEG C of temperature, the shaping of glass metal is carried out;
(4) in the temperature range of 600 ~ 750 DEG C, shaping glasswork is carried out anneal.
The existence of microbubble in glass, is mainly reacted by the fusing of admixtion in melting process that incomplete sum glass metal homogenizing is insufficient to be caused, and the granularity of frit then has influence on fusing and the homogenizing of glass.The granularity of frit is less, and the contact area between raw material is larger, and reaction surface is also larger, thus speed of response between raw material is also larger, and on the contrary, when raw material granularity is bigger than normal, the speed reacted between raw material is comparatively slow, makes burn-off rate slack-off.If but raw material granularity is too small, then easily produce and fly upward and lump, the raw material that granularity is less simultaneously can participate in reaction prematurely, causes admixtion to found layering, also can affect founding of glass, be unfavorable for the homogenizing of glass.Therefore, the size classification how controlling glass batch is the key obtaining the high quality glass that entrapped air pockets quantity is few and bubble diameter is little.
A kind of method reducing alumina silicate glass microbubble provided by the invention, by the specified particle size grating of glass batch, namely in same admixtion, the intergranular optimization of different-grain diameter, what realize the best founds effect, obtains the fine aluminum silicate glass that bubbles number is few, bubble diameter is little.
Accompanying drawing explanation
Fig. 1, Fig. 2 and Fig. 3 bubble picture for utilizing the inside of the alumina silicate glass captured by super depth-of-field microscope remaining, for amplifying the effect after 100 times;
Fig. 1 and Fig. 2 is the bubble picture of the alumina silicate glass sample not adopting the admixtion of grain size distribution to fire;
Fig. 3 is the bubble picture of the alumina silicate glass sample that the grain size distribution mode adopting the present invention to propose is fired.
Embodiment
Below in conjunction with specific embodiment, the present invention is set forth in detail.
Embodiment:
1, using feldspar, silica sand, rhombspar, Wingdale, soda ash, saltcake as the raw material of burning glass, the chemical constitution of various raw material is as shown in table 1.
The chemical constitution (wt.%) of table 1 raw material
2, consisting of of the glass oxide will fired: SiO
265wt.%; Al
2o
314wt.%; MgO 2wt.%; CaO 3wt.%; Na
2o 13wt.%; K
2o 2wt.%.
3, according to the content of oxide compound in the above-mentioned glass composition that will fire, calculate the consumption of each admixtion respectively, in admixtion, add a certain amount of carbon dust, their consumption is as shown in table 2 simultaneously.
Table 2 admixtion scale
| Material name | Feldspar | Silica sand | Rhombspar | Wingdale | Soda ash | Saltcake | Carbon dust |
| Quality (g) | 312 | 52 | 36.8 | 1.9 | 90.8 | 8 | 0.24 |
4, then by admixtion, choose raw material by following grain size distribution mode and sieve out the particle of corresponding particle size range, mixing fully.
(1) feldspar: sieve and take the feldspar particle 234 grams that particle diameter is 0.1 ~ 0.25mm, sieves and takes the feldspar particle 78 grams that particle diameter is 0.4 ~ 0.55mm;
(2) rhombspar: sieve and take the dolomite particles 5.52 grams that particle diameter is 0.075 ~ 0.125mm, sieves and takes the dolomite particles 31.3 grams that particle diameter is 2.0 ~ 2.5mm;
(3) Wingdale: sieve and take the limestone particle 0.29 gram that particle diameter is 0.08 ~ 0.15mm, sieves and takes the limestone particle 1.62 grams that particle diameter is 2.5 ~ 3.0mm;
(4) silica sand: sieve and take the silica sand particles 46.8 grams that particle diameter is 0.1 ~ 1mm, sieves and takes the silica sand particles 5.2 grams that particle diameter is 0.085 ~ 0.1mm;
(5) soda ash: sieve and take the soda ash particle 68.1 grams that particle diameter is 0.1 ~ 1mm; Sieve and take the soda ash particle 22.7 grams that particle diameter is 0.055 ~ 0.1mm;
(6) saltcake: sieve and take the saltcake particle 7.2 grams that particle diameter is 0.1 ~ 1mm, sieves and takes the saltcake particle 0.8 gram that particle diameter is 0.08 ~ 0.1mm.
After above-mentioned admixtion Homogeneous phase mixing, carry out founding of glass by following melting system:
(1) rise to 1630 DEG C by room temperature with the temperature rise rate of 2.5 DEG C/min, and be incubated 2.5 hours;
(2) be down to 1610 DEG C with the rate of temperature fall of 2 DEG C/min by 1630 DEG C, and be incubated 2 hours;
(3) at 1610 DEG C of temperature, the shaping of glass metal is carried out;
(4) at the temperature of 720 DEG C, shaping glasswork is carried out anneal.
Obtain the alumina silicate glass that remaining microbubble quantity is few, bubble diameter is little thus, as shown in Figure 3, the microbubble picture of the inside glass of the amplification of taking for utilizing super depth-of-field microscope 100 times.And Fig. 1 is melting system same as the previously described embodiments and the bubble picture of the aluminosilicate glass article of identical oxide compound proportioning, difference is, it is not according to grain size distribution mode of the present invention, but identical granularity all selected by all admixtiones, for the particle size that relative the present invention is larger, be 0.2 ~ 0.5mm; And Fig. 2 is all raw material particle sizes is the less particle size of relative the present invention, be 0.05 ~ 0.1mm.From Fig. 1, Fig. 2 and Fig. 3 relatively, the grain size distribution mode that the present invention proposes effectively can reduce the remaining number of bubbles of alumina silicate glass and bubble diameter, meets the requirement of electronic information display special glass.
The above, be only preferred embodiment of the present invention, not does any pro forma restriction to the present invention; Any those of ordinary skill in the art, do not departing under technical solution of the present invention ambit, the Method and Technology content of above-mentioned announcement can be utilized to make many possible variations and modification to technical solution of the present invention, or be revised as the Equivalent embodiments of equivalent variations.Therefore, every content not departing from technical solution of the present invention, any simple modification done above-described embodiment according to technical spirit of the present invention, equivalent replacement, equivalence change and modification, all still belong in the scope of technical solution of the present invention protection.
Claims (1)
1. one kind is reduced the method for alumina silicate glass microbubble, comprise the alumina silicate glass admixtion be made up of following raw material: feldspar, silica sand, rhombspar, Wingdale, soda ash, saltcake, the component of the alumina silicate glass made is counted by the mass percent of oxide compound: Si0
262 65wt.%; A1
20
312 15wt.%; MgO 1 4wt.%; CaO 1 3wt.%; Na
20 11 15wt.%; K
201 3wt.%, is characterized in that:
A, the raw material granularity grating mode prepared in the admixtion of alumina silicate glass are carried out according to following proportioning:
(1) feldspar: particle diameter is the 75wt.% that the feldspar amount of particles of 0.1 0.25mm accounts for total feldspar amount, particle diameter is the 25wt.% that the feldspar amount of particles of 0.4 0.55mm accounts for total feldspar amount;
(2) rhombspar: particle diameter is the 15wt.% that the dolomite particles consumption of 0.075 0.125mm accounts for total rhombspar amount, particle diameter is the 85wt.% that the dolomite particles consumption of 2.0 2.5mm accounts for total rhombspar amount;
(3) Wingdale: particle diameter is the 15wt.% that the limestone particle consumption of 0.08 0.15mm accounts for total Wingdale amount, particle diameter is the 85wt.% that the limestone particle consumption of 2.5 3.0mm accounts for total Wingdale amount;
(4) silica sand: particle diameter is the 90wt.% that the silica sand particles consumption of 0.1 1mm accounts for total silica sand amount, particle diameter is the 10wt.% that the silica sand particles consumption of 0.085 0.1mm accounts for total silica sand amount;
(5) soda ash: particle diameter is the 75wt.% that the soda ash amount of particles of 0.1 1mm accounts for total soda ash amount, particle diameter is the 25wt.% that the soda ash amount of particles of 0.055 0.1mm accounts for total soda ash amount;
(6) saltcake: particle diameter is the 90wt.% that the saltcake amount of particles of 0.1 1 mm accounts for total saltcake amount, particle diameter is the 10wt.% that the saltcake amount of particles of 0.08 0.1mm accounts for total saltcake amount;
The admixtion of B, described grain size distribution is fired according to the following steps:
(1) with 35 ° of C/minute temperature rise rate rise to 1630 ° of C by room temperature, and be incubated 23 hours;
(2) with 13 ° of C/minute rate of temperature fall be down to 1610 ° of C by 1630 ° of C, and be incubated 1. 52 hours;
(3) at 1610 ° of C temperature, the shaping of glass metal is carried out;
(4) in the temperature range of 600 750 ° of C, shaping glasswork is carried out anneal.
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| EP3395772A4 (en) * | 2015-12-25 | 2019-08-07 | Nippon Electric Glass Co., Ltd. | Mixed material for silicate glass and method for manufacturing tube glass using same |
| WO2018088503A1 (en) * | 2016-11-14 | 2018-05-17 | 旭硝子株式会社 | Production method for molten glass and production method for glass article |
| CN107010833A (en) * | 2017-04-06 | 2017-08-04 | 蚌埠玻璃工业设计研究院 | A kind of preparation method of thin-film solar cells glass substrate |
| CN109279775A (en) * | 2017-07-19 | 2019-01-29 | 王奔强 | A kind of glass processing method |
| CN108483901A (en) * | 2018-06-05 | 2018-09-04 | 中建材蚌埠玻璃工业设计研究院有限公司 | A kind of alkali-free glass batch of silicon sand size grading |
| CN109626831A (en) * | 2019-01-16 | 2019-04-16 | 河南光远新材料股份有限公司 | A method of reducing residual microbubbles in electronic glass fibers |
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Application publication date: 20131120 Assignee: In building materials (Bengbu) photoelectric material Co Ltd Assignor: Bengbu design Institute of Glass Industry Contract record no.: 2016340000005 Denomination of invention: Method for reducing microbubbles of alumina silicate glass Granted publication date: 20150708 License type: Common License Record date: 20160418 |
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