CN107686226A - Melting furnaces for borosilicate glass - Google Patents
Melting furnaces for borosilicate glass Download PDFInfo
- Publication number
- CN107686226A CN107686226A CN201710829101.3A CN201710829101A CN107686226A CN 107686226 A CN107686226 A CN 107686226A CN 201710829101 A CN201710829101 A CN 201710829101A CN 107686226 A CN107686226 A CN 107686226A
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- Prior art keywords
- depositing reservoir
- borosilicate glass
- melting furnaces
- melting furnace
- borosilicate
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- 238000002844 melting Methods 0.000 title claims abstract description 98
- 230000008018 melting Effects 0.000 title claims abstract description 98
- 239000005388 borosilicate glass Substances 0.000 title claims abstract description 43
- 238000000151 deposition Methods 0.000 claims abstract description 69
- 239000007788 liquid Substances 0.000 claims abstract description 41
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000003546 flue gas Substances 0.000 claims abstract description 4
- 239000011521 glass Substances 0.000 claims description 46
- 239000011449 brick Substances 0.000 claims description 23
- 238000007599 discharging Methods 0.000 claims description 19
- 230000005587 bubbling Effects 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 238000005352 clarification Methods 0.000 abstract description 13
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 abstract description 10
- 229910052796 boron Inorganic materials 0.000 abstract description 10
- 230000007547 defect Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 6
- 238000000265 homogenisation Methods 0.000 abstract description 5
- 229910052710 silicon Inorganic materials 0.000 description 9
- 239000010703 silicon Substances 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 230000004927 fusion Effects 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 238000007667 floating Methods 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000003570 air Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000005368 silicate glass Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 229910052810 boron oxide Inorganic materials 0.000 description 2
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 description 2
- 230000007717 exclusion Effects 0.000 description 2
- 239000005329 float glass Substances 0.000 description 2
- 238000007499 fusion processing Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 1
- 241000283070 Equus zebra Species 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000005352 borofloat Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006025 fining agent Substances 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 239000005297 pyrex Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000005361 soda-lime glass Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- C03B5/02—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating
- C03B5/027—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating by passing an electric current between electrodes immersed in the glass bath, i.e. by direct resistance heating
- C03B5/03—Tank furnaces
- C03B5/031—Cold top tank furnaces
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The present invention provides a kind of melting furnaces for borosilicate glass, including：Cold the top All Electric Melting Furnace and depositing reservoir set gradually；The bottom of cold top All Electric Melting Furnace is provided with dog-hole, and the port of export of dog-hole connects with the lower end of an increased channel being vertically arranged, and the upper end of increased channel connects with the charging aperture of depositing reservoir；The top of cold top All Electric Melting Furnace is provided with the charge door added for borosilicate batch, and the inside of cold top All Electric Melting Furnace is provided with more kiln portion electrodes；The inside of depositing reservoir is provided with electrode and multiple flame heat guns in more ponds, and depositing reservoir is provided with the exhaust opening for flue gas discharge.The present invention will melt and high temperature clarification, the process of homogenizing separate, the high volatilization of boron and its caused defect when both can effectively reduce borosilicate batch melting, efficient clarification and the homogenization of borosilicate glass liquid can be played again, the appearance of the defects of so as to avoid striped in product, significantly improves product quality.
Description
Technical field
The present invention relates to field of glass production technology, more particularly to a kind of melting furnaces for borosilicate glass.
Background technology
Usual high-boron-silicon glass refers to the silicate glass that boron oxide content in glass ingredient is more than 10%, high-boron-silicon glass by
Very high in glass melting temperature and forming temperature, boron volatilizees and easily produces split-phase, layering and furnace refractory and invades when founding
Lose the problems such as speed is fast.The glass melting temperature of high-boron-silicon glass is higher than common soda-lime-silica glass glass melting temperature all more than 1650 DEG C
More than 150 DEG C, the volatility of boron when by the way of the heating of conventional flame is combined with electricity auxiliary heating to produce high-boron-silicon glass
Up to 10~20%.The volatilization of boron not only makes production cost increase in melting furnaces, and melting furnaces Midst density it is lighter silica it is easy
It is enriched with top layer, the larger aluminum oxide of density sinks so that high-boron-silicon glass chemical composition of each layer glass metal in the depth of pond goes out
Existing significantly different, with the reduction of temperature, the viscosity of glass increases, and layering, the noted phase separation phenomena aggravation of glass are serious, the change of glass
Learning uniformity further reduces, and the plate face striped weight when producing float glass, the zebra angle of glass-board surface is low, has had a strong impact on floating
The product quality of method glass.Simultaneously as high-boron-silicon glass high temperature viscosity is big, it is unfavorable for the exclusion of Bubbles in Glass.It is high at present
The clarification of Pyrex is generally using sodium chloride as fining agent, and it is mainly used in eliminating the air pocket in glass, for smaller
Bubble clarifying effect and unobvious.
Before the volatilization of boron occurs mainly in 1000 DEG C in high-boron-silicon glass, i.e., before glass metal formation stages.Therefore, it is right
In the daily high borosilicate ware glass that fusing amount is less big, the no float glass of glass quality requirement is tight, most of manufacturer is just
The fusing mode that above-mentioned traditional flame is heated or flame is combined with electric auxiliary phase has been abandoned, but has been melted using cold top formula all-electric melting
The electric melting furnace of change technology produces.Chinese utility model patent《Vertical cold-top founds borofloat glass double combined all-electric melting
Kiln》, Authorization Notice No. CN2878376, in the patent, the inside of glass melter includes fusion zone and settling section, glass melter length
The melting furnaces wall top of side side is provided with charging aperture；Fusion zone is located at the top of settling section；The bottom of settling section pool wall side is provided with
Dog-hole, the dog-hole of glass melter connect one end charging aperture of increased channel, the other end connection supply channel of increased channel respectively.
Because electric melting furnace is vertical fusing mode, the boron oxide of volatilization can condense out at the top of cold top formula electric melting furnace,
The volatilization of boron in melting furnaces is thus greatly reduced, its volatility is typically only 1~2%.But All Electric Melting Furnace also has it certainly
The defects of body：(1) the vertical fusing mode of electric melting furnace is unfavorable for the exclusion of the microbubble in glass metal；(2) it is complete to produce high borosilicate
Electric melting furnace maximum-norm is usually no more than 35 ton days, and otherwise kiln temperature uniformity is affected, and can also produce striped etc. and lack
Fall into；(3) when slightly not at that time, the uniformity of product is just a greater impact, and product is qualified for electrode arrangement or temperature schedule in kiln
Rate is low.
The content of the invention
In view of the above the shortcomings that prior art, it is an object of the invention to provide a kind of for borosilicate glass
Melting furnaces, for solving the above-mentioned problems in the prior art.
In order to achieve the above objects and other related objects, the present invention provides a kind of melting furnaces for borosilicate glass, bag
Include：Cold the top All Electric Melting Furnace and depositing reservoir set gradually；The bottom of the cold top All Electric Melting Furnace is provided with dog-hole, the flow liquid
The port of export in hole connects with the lower end of an increased channel being vertically arranged, the upper end of the increased channel and the charging aperture of the depositing reservoir
Connection；The top of the cold top All Electric Melting Furnace is provided with the charge door added for borosilicate batch, the cold top All Electric Melting Furnace
Inside be provided with more kiln portion electrodes；The inside of the depositing reservoir is provided with electrode and multiple flame heat guns in more ponds, institute
State depositing reservoir and be provided with the exhaust opening discharged for flue gas.
Preferably, the kiln body bottom brick of the cold top All Electric Melting Furnace and kiln body side wall are planar structure, or the cold top is entirely
The kiln body bottom brick and kiln body side wall of electric melting furnace are staircase structural model.
Preferably, all kiln portion electrodes are inserted in the kiln body bottom brick of the melting furnaces, or all kilns
Portion's electrode is inserted in the kiln body side wall of the melting furnaces.
Preferably, electrode is inserted in the pond body bottom brick of the depositing reservoir in all ponds, or all described
Electrode is inserted in the pond body side wall of the depositing reservoir in pond, or electrode is divided into and is inserted in the clarification in all ponds
Bottom electrode in the pond body bottom brick in pond and the side electrodes being inserted in the pond body side wall of the depositing reservoir.
Preferably, all flame heat guns are arranged at the top of the depositing reservoir, and all flame adds
The nozzle of thermic lance is arranged in the pond body side wall of the depositing reservoir, or the nozzle of all flame heat guns is set
In on the pond body arch top of the depositing reservoir.
Preferably, the pond body bottom brick of the depositing reservoir is provided with bubbling device.
Further, along the flow direction of the borosilicate glass liquid, in the pond body side of the rear end of the depositing reservoir
Wall is provided with discharging opening, and the discharging opening connects feeder channel.
Further, heterogeneous glass liquid surface overflow device, the heterogeneous glass are additionally provided with the depositing reservoir
Liquid surface overflow device is connected with the pond body side wall of the front end both sides of the discharging opening of the depositing reservoir.
Yet further, the feeding of the discharging opening of the depositing reservoir is highly less than borosilicate glass liquid in the depositing reservoir
Liquid level level height.
Further, it is additionally provided with bottom discharge device in the pond body bottom brick in the front of the discharging opening of the depositing reservoir.
As described above, the melting furnaces of the present invention for borosilicate glass, have the advantages that：
The melting furnaces of the present invention, will melt and high temperature clarification, the process of homogenizing separate, and both can effectively reduce borosilicate cooperation
The high volatilization of boron and its caused defect during material fusing, borosilicate batch efficiently clarification and homogenization can be played again,
The appearance of the defects of so as to avoid striped in product, significantly improves product quality；It is existing it is cold top All Electric Melting Furnace scale by
The limitation of the material of borosilicate batch, high-temperature resistivity and product quality, general maximum-norm are no more than 35t/d, and this
The scale of invention melting furnaces can be more than 35t/d.
Brief description of the drawings
Fig. 1 is shown as the longitudinal profile structure schematic of the melting furnaces for borosilicate glass of the present embodiment.
Fig. 2 is shown as the overlooking the structure diagram of the melting furnaces for borosilicate glass of the present embodiment.
Drawing reference numeral explanation
100 cold top All Electric Melting Furnaces
110 kiln portion inlets
120 kiln portion electrodes
200 depositing reservoirs
201 exhaust openings
Electrode in 210 ponds
220 flame heat guns
230 heterogeneous glass liquid surface overflow devices
240 bottom discharge devices
300 dog-holes
310 anti-blocking electrodes
400 increased channels
410 side intercalative electrodes
420 middle discharge devices
500 bubbling devices
600 discharging openings
700 feeder channels
Embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book understands other advantages and effect of the present invention easily.
Refer to accompanying drawing.It should be clear that structure, ratio, size depicted in this specification institute accompanying drawings etc., only coordinating
Content disclosed in specification, so that those skilled in the art understands and reads, it is enforceable to be not limited to the present invention
Qualifications, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size,
Do not influence under the effect of present invention can be generated and the purpose that can reach, all should still fall in disclosed technology contents
Obtain in the range of covering.Meanwhile cited such as " on ", " under ", "left", "right", " centre " and " one " in this specification
Term, be merely convenient to understanding for narration, and be not used to limit the enforceable scope of the present invention, the change of its relativeness or
Adjustment, in the case where changing technology contents without essence, when being also considered as the enforceable category of the present invention.
As shown in Figure 1 to Figure 2, the melting furnaces for borosilicate glass of the present embodiment, including：The cold top set gradually is complete
Electric melting furnace 100 and depositing reservoir 200；The bottom of cold top All Electric Melting Furnace 100 is provided with dog-hole 300, the port of export of dog-hole 300 with
The lower end connection of one increased channel 400 being vertically arranged, the upper end of increased channel 400 connects with the charging aperture of depositing reservoir 200；Cold top is complete
The top of electric melting furnace 100 is provided with the charge door 110 added for borosilicate batch, and the inside of cold top All Electric Melting Furnace 100 is provided with
More kiln portion electrodes 120；The inside of depositing reservoir 200 is provided with electrode 210 and multiple flame heat guns 220 in more ponds, clarification
Pond 200 is provided with the exhaust opening 201 for flue gas discharge.
In the present invention, cold top All Electric Melting Furnace 100 forms cold top using vertical Melting Mechanism, cold top All Electric Melting Furnace 100
Afterwards, because head temperature is relatively low, therefore cold top All Electric Melting Furnace 100 radiating substantially reduces, and the thermal efficiency significantly improves, while low temperature
Inhibit the volatilization of volatile matter, that is to say, that can effectively reduce the volatilization of boron；
In existing cold top All Electric Melting Furnace 100, borosilicate batch is below above flow vertically to, and borosilicate is matched somebody with somebody
Close the flow direction that the removal of bubbles process in material is flotation from bottom to top, i.e. the effusion process of bubble and formed glass liquid stream
On the contrary, adding the stroke and resistance of bubble floating in glass metal, it is unfavorable for the discharge of bubble；And existing cold top all-electric melting
The cold roof construction of kiln 100 is also unfavorable for the effusion of bubble, therefore because the temperature of top borosilicate batch is low, viscosity is big
The existing cold top melting process of All Electric Melting Furnace 100 actually also limit the clarification of microbubble in borosilicate batch.
The melting furnaces of the present invention are to separate the fusion process of borosilicate batch and clarification, homogenization process, borosilicate
The fusion process of batch is mainly completed in cold top All Electric Melting Furnace 100, does not require to melt the boron in cold top All Electric Melting Furnace 100
The clear quality of silicate glass liquid, therefore the fusion temperature of the cold top All Electric Melting Furnace 100 of the present invention is single complete than existing
The fusion temperature of electric melting furnace is low, it is therefore an objective to is not desired to the bubble mistake in the cold borosilicate batch for pushing up All Electric Melting Furnace 100 and melting
It is early all to discharge, and as much as possible be retained in borosilicate batch；The borosilicate batch of fusing is through dog-hole
300 and increased channel 400 enter in depositing reservoir 200 and carry out high temperature clarification and homogenization again, the temperature electricity more complete than cold top of depositing reservoir 200
The fusion temperature of the borosilicate batch of melting furnaces 100 is high 50~150 DEG C, thus the inside of depositing reservoir 200 can be provided with it is multiple
Electrode 210 and multiple flame heat guns 220 in pond, i.e., the heating in depositing reservoir 200 is by the way of thermoelectricity Hybrid Heating.
Exhaust opening 201 may be arranged in the pond body side wall at the arrival end of depositing reservoir 200.It is not only electric in pond in depositing reservoir 200
Pole 210 is heated to borosilicate glass liquid, and flame heat gun 220 is additionally provided with the upper space of depositing reservoir 200
Heat borosilicate glass liquid.
The kiln body bottom brick and kiln body side wall of cold top All Electric Melting Furnace 100 be planar structure, or the cold kiln for pushing up All Electric Melting Furnace 100
Body bottom brick and kiln body side wall are staircase structural model.When the inwall of cold top All Electric Melting Furnace 100 is staircase structural model, cold top all-electric melting
The scale of kiln 100 is big, and the depth of cold top All Electric Melting Furnace 100 can reach 1.8-3m；When the inwall of cold top All Electric Melting Furnace 100 is plane
During structure, the small scale of cold top All Electric Melting Furnace 100, cold top All Electric Melting Furnace 100 is non-stepped structure, cold top All Electric Melting Furnace 100
Depth be less than 1.8m.
All kiln portion electrodes 120 are inserted in the kiln body bottom brick of melting furnaces, or all kiln portion electrodes 120 be inserted in it is molten
In the kiln body side wall of kiln.Kiln portion electrode 120 heats to the borosilicate glass liquid in cold top All Electric Melting Furnace 100.This implementation
In example, all kiln portion electrodes 120 are inserted in the kiln body bottom brick of melting furnaces.
In the present embodiment, the structure of cold top All Electric Melting Furnace 100 determines according to production scale, the horizontal stroke of cold top All Electric Melting Furnace 100
Section is hexagon, rectangle or circle；The depth of cold top All Electric Melting Furnace 100 can be 1.5~2.8m.
Electrode 210 is inserted in the pond body bottom brick of depositing reservoir 200 in all ponds, or electrode 210 is inserted in all ponds
In the pond body side wall of depositing reservoir 200, or electrode 210 divides to be inserted in the pond body bottom brick of depositing reservoir 200 in all ponds
On bottom electrode and the side electrodes that are inserted in the pond body side wall of depositing reservoir 200.Electrode 210 is in depositing reservoir 200 in pond
Borosilicate glass liquid heated.In the present embodiment, electrode 210 is inserted in the pond body bottom of depositing reservoir 200 in all ponds
On brick.
All flame heat guns 220 are arranged at the top of depositing reservoir 200；The spray of all flame heat guns 220
Mouth is arranged in the pond body side wall of depositing reservoir 200, to be heated to borosilicate glass liquid；Or all flame heating sprays
The nozzle of rifle 220 is arranged on the pond body arch top of depositing reservoir 200, to be heated to borosilicate glass liquid.Flame heating spray
The mode of heating of rifle 220 is heated using total oxygen or oxygen-enriched combustion-supporting.All nozzles are staggeredly or are arranged symmetrically.In this implementation,
The nozzle of all flame heat guns 220 is arranged in the pond body side wall of the upper space of depositing reservoir 200.
The pond body bottom brick of depositing reservoir 200 is provided with bubbling device 500.Bubbling medium used in bubbling device 500 is pressure
The gases such as contracting air, nitrogen, carbon dioxide or oxygen.Bubbling device 500 is set in depositing reservoir 200, bubbling medium can be pressure
Contracting air, oxygen or nitrogen etc., gas medium is blasted by the bubbling nozzle of bubbling device 500, the borosilicate in depositing reservoir 200
Form bubble in silicate glass liquid, with the continuous improvement of borosilicate glass liquid temperature degree, bubble also in the floating that constantly swells,
During floating, because the effect of surface tension constantly adsorbs surrounding minute bubbles on its surface, borosilicic acid is formd
" complex " and power of bubble in salt batch, so as to promote the efficient clarification of borosilicate glass liquid, due to cold
The bubble in borosilicate glass liquid is inhibited prematurely to discharge in the All Electric Melting Furnace 100 of top, therefore in the borosilicic acid of depositing reservoir 200
Bubble in salt glass metal is easier to discharge through high temperature and bubbling effect, and more preferable, glass quality is clarified with homo-effect than tradition
It is more excellent.
Along the flow direction of borosilicate glass liquid, discharging opening is provided with the pond body side wall of the rear end of depositing reservoir 200
600, discharging opening 600 connects feeder channel 700.According to the quality requirement of borosilicate glass liquid, discharging opening 600 can directly connect
Connect conventional feeder channel 700.
Heterogeneous glass liquid surface overflow device 230, heterogeneous glass liquid surface overflow device are additionally provided with depositing reservoir 200
230 are connected with the pond body side wall of the front end both sides of the discharging opening 600 of depositing reservoir 200.Heterogeneous glass liquid surface overflow dress is set
The purpose for putting 230 is to discharge the Silicon-rich heterogeneity glass metal of top layer remaining in borosilicate glass liquid.It is non-in the present embodiment
Homogeneous glass liquid surface overflow device 230 is arranged at the both sides of the pond body side wall away from charging aperture.
The feeding of the discharging opening 600 of depositing reservoir 200 is highly less than the water of the liquid level of borosilicate glass liquid in depositing reservoir 200
Flat height.Structure can make the Silicon-rich matter glass metal of top layer remaining in borosilicate glass liquid not directly enter feeder channel
In 700, but by after heterogeneous glass liquid surface overflow device 230 discharges, making the preferable borosilicate batch of quality
Entered by discharging opening 600 in feeder channel 700.In the present embodiment, the feeding height ratio of the discharging opening 600 of depositing reservoir 200
The low 20-100mm of the level height of the liquid level of borosilicate glass liquid in depositing reservoir 200.
In order to obtain satisfied glass quality, it is additionally provided with the pond body bottom brick in the front of the discharging opening 600 of depositing reservoir 200
Bottom discharge device 240.In the present invention in use, according to the requirement of product quality, bottom discharge device 240 is opened, with discharge
The impurity of the bottom of borosilicate batch.In the present embodiment, middle discharge device 420 is additionally provided with the bottom of increased channel 400,
To discharge the impurity of the bottom of borosilicate batch.
In order to prevent dog-hole 300 go into operation when or stop corbel back slab when occur freeze material, dog-hole 300 entrance point and go out
Mouth is respectively arranged with anti-blocking electrode 310 on end；Anti-blocking electrode 310 heats to borosilicate batch.
In order to slow down temperature drop of the glass metal in increased channel 400, side intercalative electrode 410 is set on the side wall of increased channel 400,
Side intercalative electrode 410 heats to borosilicate glass liquid.
The melting furnaces of the present invention, will melt and high temperature clarification, the process of homogenizing separate, and both can effectively reduce borosilicate cooperation
The high volatilization of boron and its caused defect during material fusing, borosilicate glass liquid efficiently clarification and homogenization can be played again,
The appearance of the defects of so as to avoid striped in product, significantly improves product quality；It is existing it is cold top All Electric Melting Furnace 100 scale by
To the limitation of the material of borosilicate glass liquid, high-temperature resistivity and product quality, general maximum-norm is no more than 35t/d, and
The scale of melting furnaces of the present invention can reach 40~80t/d, even more high.
To sum up, the present invention effectively overcomes various shortcoming of the prior art and has high industrial utilization.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any ripe
Know the personage of this technology all can carry out modifications and changes under the spirit and scope without prejudice to the present invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete without departing from disclosed spirit and institute under technological thought such as
Into all equivalent modifications or change, should by the present invention claim be covered.
Claims (10)
- A kind of 1. melting furnaces for borosilicate glass, it is characterised in that including：The cold top All Electric Melting Furnace (100) set gradually With depositing reservoir (200)；The bottom of the cold top All Electric Melting Furnace (100) is provided with dog-hole (300), the port of export and one of the dog-hole (300) The lower end connection for the increased channel (400) being vertically arranged, the upper end of the increased channel (400) and the charging of the depositing reservoir (200) Mouth connection；The top of the cold top All Electric Melting Furnace (100) is provided with the charge door added for borosilicate batch, the cold full electricity in top The inside of melting furnaces (100) is provided with more kiln portion electrodes (120)；The inside of the depositing reservoir (200) is provided with electrode (210) and multiple flame heat guns (220) in more ponds, described clear Clear pond (200) is provided with the exhaust opening (201) for flue gas discharge.
- 2. the melting furnaces according to claim 1 for borosilicate glass, it is characterised in that：The cold top All Electric Melting Furnace (100) kiln body bottom brick and kiln body side wall is planar structure, or the kiln body bottom brick and kiln body of the cold top All Electric Melting Furnace (100) Side wall is staircase structural model.
- 3. the melting furnaces according to claim 1 for borosilicate glass, it is characterised in that：All kiln portion electrodes (120) it is inserted in the kiln body bottom brick of the melting furnaces, or all kiln portion electrodes (120) are inserted in the kiln of the melting furnaces On body sidewall.
- 4. the melting furnaces according to claim 1 for borosilicate glass, it is characterised in that：Electrode in all ponds (210) be inserted in the pond body bottom brick of the depositing reservoir (200), or in all ponds electrode (210) be inserted in it is described In the pond body side wall of depositing reservoir (200), or electrode (210) is divided into and is inserted in the depositing reservoir (200) in all ponds Pond body bottom brick on bottom electrode and the side electrodes that are inserted in the pond body side wall of the depositing reservoir (200).
- 5. the melting furnaces according to claim 1 for borosilicate glass, it is characterised in that：All flame heating Spray gun (220) is arranged at the top of the depositing reservoir (200)；The nozzle of all flame heat guns (220) is arranged at In the pond body side wall of the depositing reservoir (200)；Or the nozzle of all flame heat guns (220) be arranged at it is described clear On the pond body arch top in clear pond (200).
- 6. the melting furnaces according to claim 1 for borosilicate glass, it is characterised in that：The depositing reservoir (200) Pond body bottom brick is provided with bubbling device (500).
- 7. the melting furnaces according to claim 6 for borosilicate glass, it is characterised in that：Along the borosilicate glass The flow direction of glass liquid, discharging opening (600), the discharging opening are provided with the pond body side wall of the rear end of the depositing reservoir (200) (600) feeder channel (700) is connected.
- 8. the melting furnaces according to claim 7 for borosilicate glass, it is characterised in that：On the depositing reservoir (200) Be additionally provided with heterogeneous glass liquid surface overflow device (230), the heterogeneous glass liquid surface overflow device (230) with it is described clear The pond body side wall connection of the front end both sides of the discharging opening (600) in clear pond (200).
- 9. the melting furnaces according to claim 8 for borosilicate glass, it is characterised in that：The depositing reservoir (200) The feeding of discharging opening (600) is highly less than the level height of the liquid level of borosilicate glass liquid in the depositing reservoir (200).
- 10. the melting furnaces according to claim 7 for borosilicate glass, it is characterised in that：In the depositing reservoir (200) Discharging opening (600) front pond body bottom brick on be additionally provided with bottom discharge device (240).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710829101.3A CN107686226A (en) | 2017-09-14 | 2017-09-14 | Melting furnaces for borosilicate glass |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710829101.3A CN107686226A (en) | 2017-09-14 | 2017-09-14 | Melting furnaces for borosilicate glass |
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| CN107686226A true CN107686226A (en) | 2018-02-13 |
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| CN201710829101.3A Pending CN107686226A (en) | 2017-09-14 | 2017-09-14 | Melting furnaces for borosilicate glass |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108751674A (en) * | 2018-07-25 | 2018-11-06 | 上海耀皮玻璃集团股份有限公司 | A kind of method of glass melter and melted glass |
| CN111484233A (en) * | 2020-05-19 | 2020-08-04 | 凤阳凯盛硅材料有限公司 | Method and device for preparing high borosilicate glass by float method |
| CN112028453A (en) * | 2020-08-24 | 2020-12-04 | 湖北新华光信息材料有限公司 | Efficient melting device and method for optical glass |
| CN114380483A (en) * | 2021-12-31 | 2022-04-22 | 中建材蚌埠玻璃工业设计研究院有限公司 | Glass melting furnace with batch preheating function |
| CN114436503A (en) * | 2021-12-28 | 2022-05-06 | 秦皇岛弘华特种玻璃有限公司 | All-electric melting energy-saving furnace for borosilicate float glass production, method of use and products |
| CN115215533A (en) * | 2022-07-26 | 2022-10-21 | 凯盛君恒药玻(青岛)有限公司 | Glass melting furnace with overflow device |
| EP4345069A1 (en) | 2023-09-29 | 2024-04-03 | Schott Ag | A vessel system for producing and refining a glass melt, and method for producing and refining a glass melt |
| EP4530262A1 (en) | 2023-09-29 | 2025-04-02 | Schott Ag | A fining vessel for refining a glass melt, and method for refining a glass melt |
| EP4530263A1 (en) | 2023-09-29 | 2025-04-02 | Schott Ag | A melting vessel for glass melting, and a method for making a glass melt |
| WO2025068384A1 (en) | 2023-09-29 | 2025-04-03 | Schott Ag | A vessel system for producing and refining a glass melt, and method for producing and refining a glass melt |
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| CN108751674A (en) * | 2018-07-25 | 2018-11-06 | 上海耀皮玻璃集团股份有限公司 | A kind of method of glass melter and melted glass |
| CN111484233A (en) * | 2020-05-19 | 2020-08-04 | 凤阳凯盛硅材料有限公司 | Method and device for preparing high borosilicate glass by float method |
| CN111484233B (en) * | 2020-05-19 | 2022-06-17 | 凤阳凯盛硅材料有限公司 | Method and device for preparing high borosilicate glass by float method |
| CN112028453A (en) * | 2020-08-24 | 2020-12-04 | 湖北新华光信息材料有限公司 | Efficient melting device and method for optical glass |
| CN114436503A (en) * | 2021-12-28 | 2022-05-06 | 秦皇岛弘华特种玻璃有限公司 | All-electric melting energy-saving furnace for borosilicate float glass production, method of use and products |
| CN114380483A (en) * | 2021-12-31 | 2022-04-22 | 中建材蚌埠玻璃工业设计研究院有限公司 | Glass melting furnace with batch preheating function |
| CN115215533A (en) * | 2022-07-26 | 2022-10-21 | 凯盛君恒药玻(青岛)有限公司 | Glass melting furnace with overflow device |
| EP4345069A1 (en) | 2023-09-29 | 2024-04-03 | Schott Ag | A vessel system for producing and refining a glass melt, and method for producing and refining a glass melt |
| EP4530262A1 (en) | 2023-09-29 | 2025-04-02 | Schott Ag | A fining vessel for refining a glass melt, and method for refining a glass melt |
| EP4530263A1 (en) | 2023-09-29 | 2025-04-02 | Schott Ag | A melting vessel for glass melting, and a method for making a glass melt |
| WO2025068095A1 (en) | 2023-09-29 | 2025-04-03 | Schott Ag | A melting vessel for glass melting, and a method for making a glass melt |
| WO2025068089A1 (en) | 2023-09-29 | 2025-04-03 | Schott Ag | A fining vessel for refining a glass melt, and method for refining a glass melt |
| WO2025068384A1 (en) | 2023-09-29 | 2025-04-03 | Schott Ag | A vessel system for producing and refining a glass melt, and method for producing and refining a glass melt |
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