CN107140810A - A kind of optical glass manufacture method of post-defecation - Google Patents
A kind of optical glass manufacture method of post-defecation Download PDFInfo
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- CN107140810A CN107140810A CN201710288954.0A CN201710288954A CN107140810A CN 107140810 A CN107140810 A CN 107140810A CN 201710288954 A CN201710288954 A CN 201710288954A CN 107140810 A CN107140810 A CN 107140810A
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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
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/225—Refining
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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
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- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Glass Melting And Manufacturing (AREA)
- Glass Compositions (AREA)
Abstract
The invention belongs to optical glass preparing technical field, more particularly, to a kind of optical glass manufacture method of post-defecation, frit is put into melting end, it is horizontal or vertical in the melting end to be sequentially provided with least two heating zone, electrode is equipped with each heating zone, the frit carries out pre- heat fusing, preliminary clarification through at least two heating zone successively, and most flowing into fining end through platinum mozzle afterwards carries out post-defecation.Present invention process is simple, cost is relatively low, melting end is in addition to function is melted, also there is preliminary clarification function, the second secondary clearing is carried out into fining end, the bubble in glass metal can be discharged clean, obtain satisfied clear quality, high-quality optical glass bubble standard (under the detection of 35W shot-lights, the bubble that the visible diameter of naked eyes is more than 0.02mm is not more than 1 to 360mm*160mm*20mm glass) is reached, the optical homogeneity of optical glass can be improved.
Description
Technical field
The invention belongs to optical glass preparing technical field, more particularly, to a kind of optical glass manufacturer of post-defecation
Method.
Background technology
Glass melting is an extremely complex process, and it chemically reacts including a series of physical.The result of these reactions
It is that the mechanical impurity for making various raw materials becomes chemically combined uniform glass liquid.It can also be produced sometimes perhaps in glass fusion process
Many defects such as bubble, calculus, striped etc., these defects are all to influence the principal element of glass quality.
The clarifying process of glass metal is mainly the process for excluding visible bubble in bubble, is extremely important ring in glass fusion process
Section, it is closely related with glassware quality.In silicate reaction and glass forming process, due to batch decomposition, certain
Volatilization, the redox reaction of batch, glass and the gas medium of a little components and waited with the interaction of refractory material
Cheng Douhui produces a large amount of gases.Wherein most gas will be escaped from glass metal, and remaining portion gas will be dissolved in glass metal
In and re-form compound with wherein certain composition.Mainly there are three kinds of states accordingly, there exist the gas in glass, you can see
Bubble, the gas of dissolving, chemically combined gas.
With the development of glass melting technology, the electrofusion technology of glass is removed to be obtained extensively should on traditional soda-lime glass
With more and more in some special glass systems (such as Pyrex, aluminosilicate glass, low alkali glass fiber, electronical display glass)
It is used widely.
At present it is known that the melting end part of existing continuous smelting kiln only has fusing function, work(is clarified without Design Fundamentals
Can, the clarification of bubble is all completed by fining end, and fining end design size and temperature requirement are of a relatively high, because of fining end size
Become greatly and temperature uprises reason, when producing the glass of big viscosity, fining end removal of bubbles difficulty is big and container material is in glass
Increase in quality influence risk；Or the melting end of known existing continuous smelting kiln, clarification function is partly also configured with, but it is molten
Change portion and fining end segmentation be not obvious, clarifies insufficient (material road is cooling effect), and difficulty or ease reach high quality glass bubble mark
Accurate (under the detection of 35W shot-lights, the bubble that the visible diameter of naked eyes is more than 0.02 is not more than 1 to 360*160*20 glass)；Or
Know the melting end of existing continuous smelting kiln, also there is preliminary clarification function part, is also configured with the fining end of post-defecation, but two
Increased channel is designed between person, glass metal is a process for cooling in the process of rising, and either platinum increased channel or AZS are resistance to
Fiery material increased channel, in order to the fining end that ensures post-defecation high temperature, it is necessary to increased channel glass liquid heating, such platinum
The corrosion of fault rate or refractory material can all be aggravated, especially the latter, influence furnace service life, and to playing pair in bubble quality in glass
Effect.
The content of the invention
It is an object of the invention to overcome above-mentioned technical deficiency, propose that a kind of cost is low, clarification is thorough, in optical glass
Better quality, the optical glass manufacture method of the higher post-defecation of quality.
To reach above-mentioned technical purpose, the technical scheme is that providing a kind of optical glass manufacturer of post-defecation
Method, frit is put into melting end, horizontal or vertical in the melting end to be sequentially provided with least two heating zone, Mei Gesuo
State and electrode is equipped with heating zone, the frit carries out pre- heat fusing through first heating zone in the heating zone and formed
Glass metal, the temperature of first heating zone is 1350-1400 degree, and the glass metal adds through second in the heating zone again
Hot-zone is tentatively clarified, and the temperature of second heating zone is 1450-1490 degree, and the glass metal is in the melting end
Residence time is 48-60 hours, and most flowing into fining end through platinum mozzle afterwards carries out post-defecation, and the glass metal is described clear
The residence time in clear portion is 1-6 hours.
As an improvement, the melting end and fining end are distributed in ladder, and the melting end is located at the fining end
Top.
As an improvement, the platinum mozzle is provided with 2-4 water conservancy diversion temperature control area.
As an improvement, the platinum mozzle is located at apart from the position of the melting end bottom 100-200mm.
As an improvement, the fining end is provided with 2-3 clarification temperature control area, and the clarification temperature control area is interior to be provided with electrode.
As an improvement, the rear end of the fining end is provided with platinum communicating pipe, platinum stirrer and platinum balancing reservoir, institute
Platinum stirrer is stated in the platinum balancing reservoir, the platinum communicating pipe connects with the platinum balancing reservoir, the platinum
Communicating pipe is provided with level monitoring hole.
As a further improvement, the platinum mozzle is provided with multiple platinum water conservancy diversion branch pipes, each platinum water conservancy diversion
Branch pipe connects a fining end.
As a further improvement, provided with 3 heating zones in the melting end, thermometric is equipped with each heating zone
Point, the electrode is located at sidepiece or the bottom of the melting end, and the top of the melting end is provided with caping, the bottom of the melting end
Portion is provided with bubbler, and the postmedian of the melting end along its length is provided with weir, and the bottom of the melting end or sidepiece are provided with
Electric boosting.
As a further improvement, the top of the glass metal is provided with powder layer.
It is preferred that, the melting end is square, hexagon or rectangle.
The beneficial effects of the invention are as follows：
The optical glass manufacture method for the post-defecation that the present invention is provided, its technique is simple, and cost is relatively low, frit warp
Glass metal is formed after first heating zone heating fusing, glass metal is reached after clarifying temp into second heating zone, and glass is former
Part fining agent in material discharges oxygen, and oxygen can take away the bubble in glass metal, reach the purpose tentatively clarified, fusing
Portion is in addition to function is melted, also with preliminary clarification function, and the glass metal through tentatively clarifying enters fining end through platinum mozzle water conservancy diversion,
The service life of melting end and fining end can be extended, the second secondary clearing is carried out in fining end, the bubble in glass metal can be discharged
Totally, satisfied clear quality is obtained, reaches that (360mm*160mm*20mm glass is in 35W for high-quality optical glass bubble standard
Under shot-light detection, the bubble that the visible diameter of naked eyes is more than 0.02mm is not more than 1), the optical homogeneity of optical glass can be improved.
Brief description of the drawings
Fig. 1 is the melting end of the embodiment of the present invention and the side view of fining end；
Fig. 2 is the melting end of the embodiment of the present invention and the top view of fining end；
Wherein, 1- melting ends, 2- caping, 3- powder layers, 4- platinum mozzles, 5- fining ends, 6- level monitorings hole, 7- platinum
In electrode in golden agitator, 8- platinum balancing reservoirs, 9- platinum communicating pipes, 10- Top electrodes, 11- Top electrode temperature measuring points, 12-, 13-
Electrode temperature measuring point, 14- bottom electrodes, 15- bottom electrode temperature measuring points, 16- carbon-points.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As shown in figure 1, a kind of optical glass manufacture method of post-defecation, its used equipment includes the He of melting end 1
Fining end 5, melting end 1 and fining end 5 are distributed in ladder, and are separated, pass through the water conservancy diversion glass of platinum mozzle 4 therebetween
Glass liquid.It is preferred that, 6 square metres of the area of melting end 1,2 meters of depth；Fining end 56 meters of length (it is anterior wide by 750, it is long 4.2 meters,
Rear portion is wide by 950,1.8 meters of length),
The top of melting end 1, which is provided with caping 2, melting end 1, is provided with 2-3 heating zone, and 3 heating are illustrated that in Fig. 1
Electrode and temperature measuring point are equipped with area, i.e. the first heating zone, the second heating zone and the 3rd heating zone, each heating zone, first adds
Hot-zone, the second heating zone and the 3rd heating zone are correspondingly provided with Top electrode 10, Top electrode temperature measuring point 11, middle electrode 12, middle electricity respectively
Pole temperature measuring point 13, bottom electrode 14 and bottom electrode temperature measuring point 15, the temperature of the first heating zone is preferably 1350-1400 degree, and second adds
The temperature of hot-zone is preferably 1450-1490 degree, and the temperature of the 3rd heating zone is preferably 1300-1400 degree.
According to the requirement of different formulas, electrode can select molybdenum electrode, tin electrode and platinum electrode, utilize Joule heat
Principle, using two-phase or three phase supply, directly heats glass metal, reaches the glass metal that 2 to 3 heating zones of melting end 1 need
Temperature, so that the function of reaching the pre- heat fusing of frit, tentatively clarify；For K class optical glass, preferred molybdenum electrode；For F
Class, environmental protection F class phosphate glass optical glass, preferred tin electrode；For high-quality and high transmittance optical glass, preferred platinum
Gold electrode.
As shown in Fig. 2 the shape of melting end 1 can be hexagon, can be also other polygons such as square, rectangle.It is right
Below 1400 degree of fusion temperature, preferred tin electrode, preferred two-phase power supply mode, along preferred three heating zones of short transverse, electricity
Insert pole prioritizing selection side；For hexagon or polygon, preferred molybdenum electrode heating can select three-phase and two-phase to power, electrode can
With select side insert or bottom insert, prioritizing selection side insert；For soda-lime-silica glass, square melting end also may be selected, electrode is preferentially selected
Select side to insert, two-phase is powered, tip conduction and sidepiece electrically conducting manner, prioritizing selection sidepiece electrically conducting manner may be selected.
As shown in figure 1, the space between caping 2 and glass metal can be heated, mode of heating can be added using cold top, flame
The modes such as heat, carbon-point and Si-Mo rod, powder is provided with for melting end preferably cold top mode, the i.e. top of glass metal vertically melted
Layer 3, frit is fused into the electric conductor directly as Jiao Er fuel factors after glass metal at high temperature, by glass metal self-conductive
To realize that it melts, metal level is covered by one layer of powder, and its top space temperature only has 70-150 DEG C, because glass metal is led
The heat that electricity is produced is absorbed, and hot gas takes away a small amount of heat energy when only feeding and melting end appearance heat scatters and disappears, so thermal effect
Rate and melting rate are high, and glass quality is good；The mode for the preferred flame heating of melting end melted for level.
The bottom of melting end 1 or sidepiece are provided with electric boosting, for sodium calcium silicon, devitrified glass, the preferred molybdenum electrode of high borosilicate；It is right
In the preferred tin electrode of special glass；Two-phase or three phase supply mode can be selected.It can be set along the width of melting end 1
Bubbler, bubbler is typically located at the bottom of melting end, and bubbler can change melt flow stroke, increase fusing time；
The length posterior segment of melting end 1, sets weir, changes glass metal thickness, the clarification of reinforcing glass liquid.
Platinum mozzle 4 is provided with the position of the bottom 100-200mm apart from melting end 1, preferred distance bottom 150mm's
Position is provided with platinum mozzle 4, and the direct-electrifying of platinum mozzle 4 heating glass metal typically sets 2 to 4 water conservancy diversion temperature control areas, first
Select 4 water conservancy diversion temperature control areas (MF1, MF2, MF3, MF4), water conservancy diversion temperature control area can ensure the stable stream of the glass metal for flowing into fining end
Glass viscosity required for amount and fining end, platinum mozzle 4 is to ensure the high temperature needed for fining end, and the water conservancy diversion of melting end 1 enters clear
The process temperature of glass liquid in clear portion 5 can not be reduced will have enough heat supplies with fining end, the diameter of platinum mozzle 4 according to
Viscosity of glass metal, flow, position drop are calculated, it is ensured that water conservancy diversion enters the glass metal of fining end 5 and do not cooled.Platinum mozzle 4 can be set
The form of the several platinum water conservancy diversion branched pipes of supervisor point is counted into, the quantity of branched pipe is determined according to the bar number of fining end (production line)
Fixed, 1 to 3 fining end of prioritizing selection (or production line) realizes an optical glass trade mark, and the diversification of different product needs.
Fining end 5 can select molybdenum electrode, tin electrode, carbon-point 16, gas as single according to the different formula of glass, material road heating
Solely heating, also may be selected molybdenum electrode and is combined with carbon-point 16 or natural gas, or tin electrode and carbon-point 16 or natural gas combination, it is ensured that
Fining end glass viscosity reaches technique needs.For containing B in formula2O3Fluoride, prioritizing selection molybdenum electrode or tin electrode with
The mode of heating that natural gas is engaged；For soda-lime-silica glass, the mode of heating that prioritizing selection molybdenum electrode and carbon-point 16 are combined；It is right
In leaded glass and the glass of the high titanium of high barium, the mode of heating that prioritizing selection tin electrode and carbon-point 16 are combined；Contain for alkali
Amount is high and containing B2O3The independent mode of heating of silicate glass prioritizing selection molybdenum electrode；For phosphate glass prioritizing selection tin electricity
Extremely independent mode of heating, makees container, space heating prioritizing selection carbon-point 16 is heated for fining end selection platinum.
Fining end 5 can select Corhart Zac-block or platinum as container material, for sodium calcium silicon, containing optics such as borosilicates
Glass, the high-quality Corhart Zac-block of prioritizing selection is used as fining end, when selection AZS is transferred to as container material, its glass
The elapsed time of glass liquid is designed as 4 to 6 hours, prioritizing selection 6 hours；For fluoride, the preferential platinum of phosphatic glass
As container, when fining end 5 selects platinum as container, the elapsed time of glass metal is designed as 1 to 2 hour, and prioritizing selection 1 is small
When.
As shown in figure 1, the rear end of fining end 5 is provided with platinum communicating pipe 9, platinum communicating pipe 9 level monitoring hole 6 is provided with,
The top of level monitoring hole 6 is provided with Level meter, and it detects liquid level feedback and gives the electrode current control unit of platinum mozzle 4
Point, according to height of liquid level, increase or reduction electrode current realize the stability contorting of fining end liquid level.
It is communicated with platinum communicating pipe 9 in platinum balancing reservoir 8, platinum balancing reservoir provided with platinum stirring 7, platinum stirring 7 and platinum
Golden balancing reservoir 8 be in order to eliminate in glass striped.
The manufacture method of the 10TK51 optical glass of post-defecation
Frit (mass percent)：SiO:270%~72%, Na2O:11.5%~12.5%, K2O:8%~
9.5%, B2O3：1.5%, CaO:8%~9%, BaO:1%~2%, TiO2:1%~2%, Sb2O3:0.1%~1%.Refraction
Rate：1.52307 density：2.53 gram/cc；1350 degree to 1400 degree of the fusion temperature of glass；The clarifying temp of glass metal
1450 degree.
Parameter setting：
Top electrode voltage x current：105V/1300A temperature：1350 degree；
Middle electrode voltage electric current：110V/1420A temperature：1450 degree；
Bottom electrode voltage x current：75V/400A temperature：1350 degree；
Platinum mozzle temperature：MF1：1350 degree of MF2：1360 degree of MF3：1380 degree of MF4：1400 degree；
Fining end：Head temperature CF1：1400 degree；Middle portion temperature CF2：1450 degree；Back segment temperature CF3：1400 degree；
Fining end carbon-point power：80KVA；
Four molybdenum electrode power：40KVA；
Platinum balancing reservoir space temperature：1200 degree to 1250 degree；
Clarify pit level：Liquid level line is from bottom 230mm；
Use on automatic charging equipment continuous charging, melting tank powder leafing melting end along 100mm；
Platinum stirrer rotating speed：30 revs/min；
Manufacturing process：
By in above-mentioned each frit input melting end, frit preheats through melting end, melts and forms glass metal, glass
Liquid melting end residence time be 48-60 hours, preferably 60 hours, after glass metal is tentatively clarified through melting end, then through platinum
Mozzle flows into fining end and carries out post-defecation, and glass metal is 1-6 hours in the residence time of fining end, and fining end is electric smelting zirconium
During corundum material, the elapsed time of its glass metal is designed as 4 to 6 hours, prioritizing selection 6 hours, when fining end is platinum material,
The elapsed time of glass metal is designed as 1 to 2 hour, prioritizing selection 1 hour.
Product quality situation：360mm*160mm*20mm glass is under the detection of 35W shot-lights, and the visible diameter of naked eyes is more than
The quantity that 0.02mm bubble is not more than 1 accounts for the 98% of total quantity.
The embodiment of present invention described above, is not intended to limit the scope of the present invention..Any basis
Various other corresponding changes and deformation that the technical concept of the present invention is made, should be included in the guarantor of the claims in the present invention
In the range of shield.
Claims (10)
1. the optical glass manufacture method of a kind of post-defecation, it is characterised in that put into frit in melting end, described molten
It is horizontal or vertical in change portion to be sequentially provided with least two heating zone, it is equipped with electrode, the frit in each heating zone
Pre- heat fusing formation glass metal is carried out through first heating zone in the heating zone, the temperature of first heating zone is
1350-1400 degree, the glass metal is tentatively clarified through second heating zone in the heating zone again, and described second adds
The temperature of hot-zone is 1450-1490 degree, and the glass metal is 48-60 hours in the residence time of the melting end, most afterwards through platinum
Golden mozzle flows into fining end and carries out post-defecation, and the glass metal is 1-6 hours in the residence time of the fining end.
2. the optical glass manufacture method of post-defecation according to claim 1, it is characterised in that the melting end and clear
Clear portion is distributed in ladder, and the melting end is located at the top of the fining end.
3. the optical glass manufacture method of post-defecation according to claim 1, it is characterised in that the platinum mozzle
Provided with 2-4 water conservancy diversion temperature control area.
4. the optical glass manufacture method of post-defecation according to claim 1, it is characterised in that the platinum mozzle
Located at the position apart from the melting end bottom 100-200mm.
5. the optical glass manufacture method of post-defecation according to claim 1, it is characterised in that the fining end is provided with
Electrode is provided with 2-3 clarification temperature control area, the clarification temperature control area.
6. the optical glass manufacture method of post-defecation according to claim 1, it is characterised in that after the fining end
End is provided with platinum communicating pipe, platinum stirrer and platinum balancing reservoir, and the platinum stirrer is in the platinum balancing reservoir, institute
State and connected with the platinum balancing reservoir platinum communicating pipe, the platinum communicating pipe is provided with level monitoring hole.
7. the optical glass manufacture method of the post-defecation according to claim any one of 1-6, it is characterised in that the platinum
Golden mozzle is provided with multiple platinum water conservancy diversion branch pipes, and each platinum water conservancy diversion branch pipe connects a fining end.
8. the optical glass manufacture method of the post-defecation according to claim any one of 1-6, it is characterised in that described molten
Provided with 3 heating zones in change portion, temperature measuring point is equipped with each heating zone, the electrode is located at the sidepiece of the melting end
Or bottom, the top of the melting end is provided with caping, and the bottom of the melting end is provided with bubbler, and the melting end is along length side
To postmedian be provided with weir, the bottom of the melting end or sidepiece are provided with electric boosting.
9. the optical glass manufacture method of post-defecation according to claim 8, it is characterised in that the glass metal it is upper
Portion is provided with powder layer.
10. the optical glass manufacture method of post-defecation according to claim 1, it is characterised in that the melting end is
Square, hexagon or rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710288954.0A CN107140810B (en) | 2017-04-27 | 2017-04-27 | Method for manufacturing optical glass with secondary clarification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710288954.0A CN107140810B (en) | 2017-04-27 | 2017-04-27 | Method for manufacturing optical glass with secondary clarification |
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| Publication Number | Publication Date |
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| CN107140810A true CN107140810A (en) | 2017-09-08 |
| CN107140810B CN107140810B (en) | 2020-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710288954.0A Active CN107140810B (en) | 2017-04-27 | 2017-04-27 | Method for manufacturing optical glass with secondary clarification |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111204955A (en) * | 2020-01-16 | 2020-05-29 | 成都光明光电股份有限公司 | Method for producing optical glass |
| CN115367999A (en) * | 2022-09-21 | 2022-11-22 | 成都光明光电股份有限公司 | Intermittent optical glass production method and device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111204955A (en) * | 2020-01-16 | 2020-05-29 | 成都光明光电股份有限公司 | Method for producing optical glass |
| CN115367999A (en) * | 2022-09-21 | 2022-11-22 | 成都光明光电股份有限公司 | Intermittent optical glass production method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107140810B (en) | 2020-02-07 |
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