CN118479727A - Display electronic glass and melting method - Google Patents
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- CN118479727A CN118479727A CN202410594479.XA CN202410594479A CN118479727A CN 118479727 A CN118479727 A CN 118479727A CN 202410594479 A CN202410594479 A CN 202410594479A CN 118479727 A CN118479727 A CN 118479727A
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
- C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
- C03C3/093—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium containing zinc or zirconium
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- 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
- C03B5/02—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating
-
- 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
- C03B5/02—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating
- C03B5/023—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating by microwave heating
-
- 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
- C03B5/235—Heating the glass
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C4/00—Compositions for glass with special properties
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
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- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
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Abstract
本发明提供一种显示电子玻璃及熔制方法，包括以下组分：石英砂作为SiO2来源、氧化铝作为A l 2O3来源、氧化硼作为B2O3来源、氧化镁作为MgO来源、碳酸钙作为CaCO3来源、碳酸锶作为SrCO3来源、氧化锌作为ZnO来源、硝酸锶作为Sr(NO3)2来源、碳酸钡作为BaCO3来源、二氧化锡作为SnO2来源、氧化锆作为ZrO2来源；本发明中，在微波加热，对料山的石英砂和氧化铝的加热效果明显，弥补火焰加热和电加热对未熔料山加热能力的不足，会使节瘤和气泡会在高温下被熔化和排出。
The present invention provides a display electronic glass and a melting method, comprising the following components: quartz sand as a SiO2 source, aluminum oxide as an Al2O3 source, boron oxide as a B2O3 source, magnesium oxide as a MgO source, calcium carbonate as a CaCO3 source, strontium carbonate as a SrCO3 source, zinc oxide as a ZnO source, strontium nitrate as a Sr( NO3 ) 2 source, barium carbonate as a BaCO3 source, tin dioxide as a SnO2 source, and zirconium oxide as a ZrO2 source; in the present invention, microwave heating has an obvious heating effect on the quartz sand and aluminum oxide of the material mountain, which makes up for the insufficient heating capacity of flame heating and electric heating for the unmelted material mountain, and makes the nodules and bubbles be melted and discharged at high temperature.
Description
Technical Field
The invention belongs to the technical field of electronic glass, and particularly relates to display electronic glass and a melting method.
Background
Glass is an important material widely applied to various fields, and the preparation technology thereof has been a hot spot for research. At present, the molding glass kiln has the defects of bubbles, nodules and higher hydroxyl groups, and influences the product yield and the cost of enterprises. The preparation process of the glass mainly comprises the steps of raw material mixing, melting, forming, annealing and the like. Wherein the quality of the raw material mixture directly affects the quality of the final glass product, and the hydroxyl group content in the raw material is one of the important factors affecting the mixing quality. In addition, nodules and bubbles in glass can also severely affect their performance, and therefore, how to effectively control hydroxyl content, eliminate nodules and bubbles, is an important issue facing glass manufacturing techniques.
The existing glass preparation technology mainly adopts traditional heating modes, such as electric furnace heating, flame heating and the like, and the methods can effectively melt and shape raw materials into glass. However, these methods are not effective in reducing the hydroxyl content of the raw material and are not effective in completely eliminating nodules and bubbles.
Although existing glass manufacturing techniques can meet the needs of glass manufacturing to some extent, there are still some problems and disadvantages. First, the conventional heating method often requires higher energy consumption and lower heating efficiency, which not only increases the production cost, but also affects the production efficiency. Secondly, the high hydroxyl content results in a decrease in the chemical stability and mechanical strength of the glass, which affects its service performance. Finally, because the prior art cannot effectively eliminate knots and bubbles, a large number of defects exist in the glass product, and the appearance and the service performance of the glass product are affected.
In summary, the present invention provides a display electronic glass and a melting method thereof to solve the above problems.
Disclosure of Invention
In order to solve the technical problems, the invention provides display electronic glass and a melting method, which are used for solving the problems that in the prior art, nodes and bubbles cannot be effectively eliminated, so that a large number of defects exist in glass products, the appearance and the usability of the glass products are affected, and the like.
A display electronic glass comprising the following components: quartz sand as a source of SiO 2, alumina as a source of A l 2O3, boron oxide as a source of B 2O3, magnesium oxide as a source of MgO, calcium carbonate as a source of CaCO 3, strontium carbonate as a source of SrCO 3, zinc oxide as a source of ZnO, strontium nitrate as Sr (NO 3)2 source, barium carbonate as a source of BaCO 3, tin dioxide as a source of SnO 2, zirconium oxide as a source of ZrO 2;
the key point of the display electronic glass is that the first batch of batch comprises the following components:
56-65% of SiO 2;
a l 2O3 at 12-24%;
0.35 to 11 percent of B 2O3;
MgO in 0.1-5 wt%;
1-10% CaCO 3;
0.8 to 7 percent of SrCO 3;
0.001 to 1.2 percent of ZnO;
0.001 to 1.5% Sr (NO 3)2;
0.001-15.07% BaCO 3;
0.1 to 0.5 percent of SnO 2;
0.001 to 0.02 percent of ZrO 2.
Further, the standard for the particle size of the compounded raw material (we i ght%) is as follows:
SiO 2: more than 106 mu m and less than or equal to 8; more than 150 mu m and less than or equal to 0; d50 68um + -4;
a l 2O3: less than 45um, less than or equal to 20; more than 106 mu m and less than or equal to 2; more than 150um, less than or equal to 1; more than 250um and less than or equal to 1; d50.68.mu.m.+ -.4
B 2O3 is less than or equal to 75 um; > 250 μm,20-50; more than 850um, less than or equal to 5;
MgO is more than 150 mu m and less than or equal to 1; more than 250um and less than or equal to 5;
CaCO 3 is more than 150 mu m and less than or equal to 1; more than 250um and less than or equal to 10; more than 850um, less than or equal to 2; more than 1500um, less than or equal to 0;
106-150 mu m of SrCO 3 and 20-40; more than 250um, more than or equal to 20; more than 850um, less than or equal to 5; more than 1500um, less than or equal to 0;
Sr (NO 3)2: > 300 μm, less than or equal to 65; > 850um, less than or equal to 10, > 1500um, less than or equal to 5;
BaCO 3 > 850um,0; less than 106um, less than or equal to 95;
SnO 2 is more than 106 μm and less than or equal to 5;
ZrO 2 is more than 106 μm and less than or equal to 5.
A melting method for display electronic glass comprises the following steps:
step one: adding the raw materials into an inner cavity of a molding forming furnace, and heating by utilizing microwaves, so that the batch is dissolved to form glass liquid;
Step two: and (3) the glass liquid enters a glass liquid channel, and is clarified, homogenized, cooled and formed to obtain the formed glass.
Further, the molding forming furnace comprises a furnace body, a feed inlet is arranged on one side of the furnace body, a flue is arranged at the top of the furnace body, a plurality of microwave heaters, electrode bricks and burning guns are arranged in the furnace body, a discharge outlet is arranged at one end, far away from the feed inlet, of the furnace body, the length of the furnace body is 6000-14000 mm, the width of the furnace body is 2500-3500 mm, the height of the furnace body is 2500-3500 mm, 6-12 areas are total, the length of each area is 600-1200 mm, the depth of glass liquid is controlled to be 1000-1500 mm, an exhaust pipe is arranged at the top of the bin tail end at the top of the feed end, and the microwave frequency is 1-2.45 GHz.
Further, the flue opening area of the flue is 650-1500 mm 2, the charging opening is 300-900 mm 2, the length of the electrode brick is 600-1000 mm, the width is 200-600 mm, the height is 600-1000 mm, one of tin oxide and molybdenum can be selected as the material, and the firing opening of the firing gun has a circular structure and the size is 250-400 mm.
Further, in the first step, dissolution is achieved by means of a burning torch, electric heating.
Compared with the prior art, the invention has the following beneficial effects:
1. According to the invention, the natural gas, the electric fluxing agent and the microwave are adopted to heat the melt of the batch, and the high-frequency electromagnetic field characteristic of the microwave is utilized, so that the internal cold material can be rapidly heated through the material mountain, thereby reducing the moisture content in the unmelted material, not only effectively reducing the hydroxyl content of the unmelted material mountain, but also improving the chemical stability and mechanical strength of the glass.
2. In the invention, the heating effect on quartz sand and alumina of the material mountain is obvious in microwave heating, the defect of heating capability of the unbelted mountain caused by flame heating and electric heating is overcome, and the node and the bubble can be melted and discharged at high temperature.
3. According to the invention, the angle and frequency of the microwaves are adjusted according to the state of the material mountain, the unmelted material of the molding forming furnace is heated, and the proportion of the material mountain is controlled to achieve a good melting state.
Drawings
FIG. 1 is a flow chart of the method of the present invention;
FIG. 2 is a schematic view of the modeling furnace structure of the present invention.
In the figure:
1. a feed inlet; 2. a flue; 3. an electrode brick; 4. a microwave heater; 5. burning gun; 6. and a discharge port.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the invention but are not intended to limit the scope of the invention.
As shown in fig. 1-2, the present invention provides a display electronic glass, comprising the following components: quartz sand as a source of SiO 2, alumina as a source of Al 2O3, boron oxide as a source of B 2O3, magnesium oxide as a source of MgO, calcium carbonate as a source of CaCO 3, strontium carbonate as a source of SrCO 3, zinc oxide as a source of ZnO, strontium nitrate as Sr (NO 3)2 source, barium carbonate as a source of BaCO 3, tin dioxide as a source of SnO 2, zirconium oxide as a source of ZrO 2;
Wherein, it shows electronic glass, and the key lies in that first batch ingredients are as follows:
56-65% of SiO 2;
a l 2O3 at 12-24%;
0.35 to 11 percent of B 2O3;
MgO in 0.1-5 wt%;
1-10% CaCO 3;
0.8 to 7 percent of SrCO 3;
0.001 to 1.2 percent of ZnO;
0.001 to 1.5% Sr (NO 3)2;
0.001-15.07% BaCO 3;
0.1 to 0.5 percent of SnO 2;
0.001 to 0.02 percent of ZrO 2.
As an embodiment of the present invention, the standard of the compounding raw material particle size we i ght%) is as follows:
SiO 2: more than 106 mu m and less than or equal to 8; more than 150 mu m and less than or equal to 0; d50 68um + -4;
a l 2O3: less than 45um, less than or equal to 20; more than 106 mu m and less than or equal to 2; more than 150um, less than or equal to 1; more than 250um and less than or equal to 1; d50.68.mu.m.+ -.4
B 2O3 is less than or equal to 75 um; > 250 μm,20-50; more than 850um, less than or equal to 5;
MgO is more than 150 mu m and less than or equal to 1; more than 250um and less than or equal to 5;
CaCO 3 is more than 150 mu m and less than or equal to 1; more than 250um and less than or equal to 10; more than 850um, less than or equal to 2; more than 1500um, less than or equal to 0;
106-150 mu m of SrCO 3 and 20-40; more than 250um, more than or equal to 20; more than 850um, less than or equal to 5; more than 1500um, less than or equal to 0;
Sr (NO 3)2: > 300 μm, less than or equal to 65; > 850um, less than or equal to 10, > 1500um, less than or equal to 5;
BaCO 3 > 850um,0; less than 106um, less than or equal to 95;
SnO 2 is more than 106 μm and less than or equal to 5;
ZrO 2 is more than 106 μm and less than or equal to 5.
A melting method for display electronic glass comprises the following steps:
step one: adding the raw materials into an inner cavity of a molding forming furnace, and heating by utilizing microwaves, so that the batch is dissolved to form glass liquid;
Step two: and (3) the glass liquid enters a glass liquid channel, and is clarified, homogenized, cooled and formed to obtain the formed glass.
As one embodiment of the invention, the molding forming furnace comprises a furnace body, wherein one side of the furnace body is provided with a feed inlet 1, the top of the furnace body is provided with a flue 2, a plurality of microwave heaters 4, electrode bricks 3 and burning guns 5 are arranged in the furnace body, one end of the furnace body, which is far away from the feed inlet 1, is provided with a discharge outlet 6, the length of the furnace body is 6000-14000 mm, the width is 2500-3500 mm, the height is 2500-3500 mm, 6-12 areas are total, the length of each area is 600-1200 mm, the depth of glass liquid is controlled to be 1000-1500 mm, the top of the top bin end of the feed end is provided with an exhaust pipe, and the microwave frequency is 1-2.45 GHz.
As one embodiment of the invention, the flue opening area of the flue 2 is 650-1500 mm 2, the charging hole 1 is 300-900 mm 2, the length of the electrode brick 3 is 600-1000 mm, the width is 200-600 mm, the height is 600-1000 mm, the material can be one of tin oxide and molybdenum, and the burning opening of the burning gun 5 has a circular structure and the size is 250-400 mm.
In step one, according to one embodiment of the present invention, dissolution is achieved by means of a burning torch 5, electric heating.
The method mainly comprises the steps of melting batch materials and feeding the batch materials into a glass liquid channel, wherein the front region is as follows according to different functions and conditions of different parts: the microwave is added in the front region to heat unmelted batch at high temperature by utilizing the unique stability of the microwave between 3m and 7m of the material mountain area, thereby being beneficial to reducing hydroxyl groups in glass liquid, being beneficial to melting quartz sand and alumina, reducing nodules and bubbles, being beneficial to auxiliary heating of the microwave, being capable of realizing high-quality glass liquid which is difficult to obtain in a common tank furnace, the melted glass liquid enters a glass liquid channel through a feed port, ensuring the generation of stones and bubbles of the glass liquid, and realizing the sufficient uniformity of glass liquid components. The device is suitable for a tank furnace with daily discharge amount of between 6 and 38 tons, if the daily discharge amount is lower than 6 tons, the unit cost is increased, if the daily discharge amount is higher than 38 tons, the high-quality glass liquid cannot be ensured due to too large flow, and the defect is increased at the same time.
The glasses of the following examples were prepared by the above formulation and melting, and are described in detail as follows:
1. Energy saving and high efficiency: the microwave heating mode is adopted in the technical scheme, compared with the traditional heating mode, such as electric furnace heating, flame heating and the like, the microwave heating has higher heating efficiency, and the batch can be quickly heated to the required temperature in a short time, so that energy sources are greatly saved, and the production cost is reduced.
2. Improving the product quality: according to the technical scheme, the moisture content in the batch can be effectively reduced by heating the batch by microwaves, so that the generation of hydroxyl is reduced, and the chemical stability and mechanical strength of glass are improved. Meanwhile, the burl and bubble in the glass can be effectively eliminated by microwave heating, and the appearance and the service performance of the glass product are improved.
3. The production efficiency is improved: because microwave heating has the characteristic of rapid heating, the technical scheme can greatly improve the production efficiency of glass and meet the requirement of mass production.
The embodiments of the present invention have been shown and described for the purpose of illustration and description, it being understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made therein by one of ordinary skill in the art without departing from the scope of the invention.
Claims (6)
1. A display electronic glass, characterized in that: the composition comprises the following components: quartz sand as SiO 2 source, alumina as Al 2O3 source, boron oxide as B 2O3 source, magnesium oxide as MgO source, calcium carbonate as CaCO 3 source, strontium carbonate as SrCO 3 source, zinc oxide as ZnO source, strontium nitrate as Sr (NO 3)2 source, barium carbonate as BaCO 3 source, tin dioxide as SnO 2 source, zirconium oxide as ZrO 2 source;
wherein it comprises in mole% in terms of oxide the following ranges:
56-65% of SiO 2;
12-24% of Al 2O3;
0.35 to 11 percent of B 2O3;
MgO in 0.1-5 wt%;
1-10% CaCO 3;
0.8 to 7 percent of SrCO 3;
0.001 to 1.2 percent of ZnO;
0.001 to 1.5% Sr (NO 3)2;
0.001-15.07% BaCO 3;
0.1 to 0.5 percent of SnO 2;
0.001 to 0.02 percent of ZrO 2.
2. The display electronic glass according to claim 1, wherein: the standard for the particle size (weight%) of the compounded feedstock is as follows:
SiO 2: more than 106 mu m and less than or equal to 8; more than 150 mu m and less than or equal to 0; d50 68um + -4;
al 2O3: less than 45um, less than or equal to 20; more than 106 mu m and less than or equal to 2; more than 150um, less than or equal to 1; more than 250um and less than or equal to 1; d50.68.mu.m.+ -.4
B 2O3 is less than or equal to 75 um; > 250 μm,20-50; more than 850um, less than or equal to 5;
MgO is more than 150 mu m and less than or equal to 1; more than 250um and less than or equal to 5;
CaCO 3 is more than 150 mu m and less than or equal to 1; more than 250um and less than or equal to 10; more than 850um, less than or equal to 2; more than 1500um, less than or equal to 0;
106-150 mu m of SrCO 3 and 20-40; more than 250um, more than or equal to 20; more than 850um, less than or equal to 5; more than 1500um, less than or equal to 0;
Sr (NO 3)2: > 300 μm, less than or equal to 65; > 850um, less than or equal to 10, > 1500um, less than or equal to 5;
BaCO 3 > 850um,0; less than 106um, less than or equal to 95;
SnO 2 is more than 106 μm and less than or equal to 5;
ZrO 2 is more than 106 μm and less than or equal to 5.
3. A method of melting the display electronic glass according to claims 1-2, characterized in that: the method comprises the following steps:
step one: adding the raw materials into an inner cavity of a molding forming furnace, and heating by utilizing microwaves, so that the batch is dissolved to form glass liquid;
Step two: and (3) the glass liquid enters a glass liquid channel, and is clarified, homogenized, cooled and formed to obtain the formed glass.
4. The method for melting display electronic glass according to claim 3, wherein: the molding forming furnace comprises a furnace body, a charging port (1) is arranged on one side of the furnace body, a flue (2) is arranged at the top of the furnace body, a plurality of microwave heaters (4), electrode bricks (3) and burning guns (5) are arranged in the furnace body, a discharging port (6) is arranged at one end, far away from the charging port (1), of the furnace body, the length of the furnace body is 6000-14000 mm, the width is 2500-3500 mm, the height is 2500-3500 mm, 6-12 areas are formed, the length of each area is 600-1200 mm, the glass liquid depth is controlled to be 1000-1500 mm, an exhaust pipe is arranged at the top of the bin end at the top of the charging port, and the microwave frequency is 1-2.45 GHz.
5. The method for melting display electronic glass according to claim 4, wherein: the flue opening area of the flue (2) is 650-1500 mm 2, the charging opening (1) is 300-900 mm 2, the length of the electrode brick (3) is 600-1000 mm, the width is 200-600 mm, the height is 600-1000 mm, the material can be one of tin oxide and molybdenum, and the burning opening of the burning gun (5) is of a circular structure and the size is 250-400 mm.
6. The method for melting display electronic glass according to claim 4, wherein: in the first step, dissolution is achieved by means of a burning torch (5) and electric heating.
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Application publication date: 20240813 |