CN109502969A - A kind of low-transmittance coloured glass and preparation method thereof - Google Patents
A kind of low-transmittance coloured glass and preparation method thereof Download PDFInfo
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- CN109502969A CN109502969A CN201811560715.7A CN201811560715A CN109502969A CN 109502969 A CN109502969 A CN 109502969A CN 201811560715 A CN201811560715 A CN 201811560715A CN 109502969 A CN109502969 A CN 109502969A
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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
- C03C4/00—Compositions for glass with special properties
- C03C4/02—Compositions for glass with special properties for coloured glass
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B19/00—Other methods of shaping glass
- C03B19/04—Other methods of shaping glass by centrifuging
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B25/00—Annealing glass products
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/04—Tempering or quenching glass products using gas
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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
- C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
- C03C1/04—Opacifiers, e.g. fluorides or phosphates; Pigments
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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
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Abstract
It is that 80 ~ 97% base starting material, 1.5 ~ 10% colorant and 1.5 ~ 10% opacifier are constituted by weight ratio, the colorant includes following weight ratio ingredient: manganese dioxide 40 ~ 95% the invention discloses a kind of low-transmittance coloured glass；Chrome green 5 ~ 60%.The invention also discloses a kind of preparation methods of low-transmittance coloured glass, include the following steps: to stock up；Mixing；Melting；Clarification and molding.Low-transmittance coloured glass pure color prepared by the present invention, light transmittance are low, quality is stable and low in cost, simultaneously, its characteristic with glass product itself, waste product can very be melted down and be melted again, relative to glasswares such as transparent, milkiness, product specification is higher, facilitates the art up innovation of product.
Description
Technical field
The invention belongs to glass production manufacturing technology fields, specifically, be related to a kind of low-transmittance coloured glass and its
Preparation method.
Background technique
Utility glass ware in the market is mainly based on transparent, but as people consume the transformation of grade, not to other
Demand with the coloured glass of color is also being gradually increased, wherein the dark colours such as mass colour glassware is with its elegant and mind
Secret makings is especially pursued by people.In the production of daily coloured glass vessel, common technique is in product surface
The advantages of spraying dyestuff is coloured, this mode is various colors, and color difference is small, but the coloring layer high temperature resistance finally obtained
Difference, mechanical performance is low, and surface gloss is not good enough, and there are the risks of harmful substance dissolution.And if in glass melting process
In directly by raw material addition in a manner of introduce colouring component, utilize the metal ions such as nickel, copper, manganese, cobalt, iron, chromium, copper in colorant
Make product that specific color be presented to the selective absorbing of visible light wave range, the product glossiness obtained in this way is high, and color is pure
Just, risk surface strength height and dissolved out without heavy metal substance.But due to being integral colouring, it is pure to obtain color
Just and the low glassware of light transmittance needs colorant proportion to be added higher, and the price of such raw material is generally more expensive, causes
Production cost is high.
Industry is in terms of technical research, always seeking to introduce opacifier on the basis of adding composite coloration agent, in glass
Small split-phase and crystal grain are formed in glass forming process, then atom and ion on phase interface can be made to become and vibrated with frequency of light wave
Dipole method, enhance absorption to incident laser energy so as to reach in light incidence, change simultaneously incident light
The direction of propagation, enhance scattering process to light, while reducing cost.
Summary of the invention
Technical problem to be solved of the invention is to provide a kind of low manufacturing cost and pure color, light transmittance are low
Low-transmittance coloured glass and preparation method thereof.
The technical solution of present invention solution above-mentioned technical problem are as follows:
A kind of low-transmittance coloured glass is 80 ~ 97% base starting material, 1.5 ~ 10% colorant and 1.5 ~ 10% by weight ratio
Opacifier constitute, the colorant includes following weight ratio ingredient:
Manganese dioxide 40 ~ 95%；
Chrome green 5 ~ 60%.
Specifically, the colorant further includes following weight ratio ingredient:
Cobalt sesquioxide 0 ~ 30%；
Di-iron trioxide 0 ~ 30%.
Preferably, the base starting material includes following weight ratio ingredient:
Silica 65 ~ 85%；
Sodium oxide molybdena 8 ~ 18%；
Calcium oxide 5 ~ 15%；
Aluminum oxide 1 ~ 5%；
Magnesia 0.5 ~ 5%；
Boron oxide 0.5 ~ 5%.
Preferably, the base starting material further includes following weight ratio ingredient:
Potassium oxide 0 ~ 2%；
Barium monoxide 0 ~ 2%；
Zinc oxide 0 ~ 2%.
Specifically, the opacifier is made of ice crystal and/or fluorite.
The invention also discloses another technical solutions for solving above-mentioned technical problem are as follows:
It is a kind of to prepare the preparation method such as above-mentioned low-transmittance coloured glass, include the following steps:
Stock prepares base starting material, colorant and the opacifier of corresponding weight ratio according to formula；
Base starting material, colorant are put into mixing machine with opacifier and are mixed by mixing, and incorporation time is 30 ~ 60 minutes, are obtained
Obtain mixture；
Melting, mixture is placed on electric smelter, is melted by the main molten furnace of electric smelter, obtains molten liquid；
Clarification, molten liquid carry out clarifying treatment from the clarification material path that main molten furnace flows into electric smelter, obtain glass stoste；
Molding, glass stoste is transported in centrifugal shaper by feeding machine from electric smelter, is formed, and obtains product glass
Glass.
Specifically, the electric smelter vertically melts principle, melting temperature 1350 using cold top formula in the melting step
~ 1550 DEG C, the top insertion electrode electric current of main molten furnace is 2800 ~ 2900A.
Specifically, the electrode current of the clarification material path is 150 ~ 160A in the clarification steps.
Preferably, further include following steps:
Annealing, makes annealing treatment product glass, and annealing temperature is 600 DEG C, and annealing time is 80 minutes；
Tempering is put into annealing furnace the product glass after annealing and carries out tempering processing, and 620 degrees Celsius of tempering temperature, annealing furnace
Mesh belt operating rate be 0.02 ~ 0.04m/s.
Preferably, further include following steps before the material preparation step:
The manganese dioxide of corresponding weight ratio, chrome green, cobalt sesquioxide and three are aoxidized two according to formula by colorant preparation
Iron is put into mixing machine and is mixed, and incorporation time is 20 minutes, obtains colorant.
The present invention also has the advantages that low-transmittance coloured glass pure color prepared by the present invention, light transmittance
Low, quality is stable and low in cost, meanwhile, the characteristic with glass product itself can very melt down again waste product
It is melted, relative to glasswares such as transparent, milkiness, product specification is higher, facilitates the art up innovation of product.
Specific embodiment
It elaborates below with reference to embodiment to the present invention.
Embodiment 1:
A kind of low-transmittance coloured glass color of the embodiment of the present invention 1 is prepared by following steps.
Colorant preparation puts 55.5% manganese dioxide, 28.2% chrome green, 16.3% di-iron trioxide according to formula
Enter in mixing machine and mixed, incorporation time is 20 minutes, obtains colorant.
Stock, according to formula prepare 93.5% base starting material, 4.5% by the coloring that is prepared in colorant preparation step
Agent with 2.0% opacifier；Wherein, base starting material be 68.2% silica, 15.4% sodium oxide molybdena, 11.0% calcium oxide, 2.17% 3
Al 2 O, 1.25% magnesia, 0.30% potassium oxide, 1.3% boron oxide and 0.38% barium monoxide form；Opacifier is ice crystal.
Base starting material, colorant are put into mixing machine with opacifier and are mixed by mixing, and incorporation time is 30 ~ 60 points
Clock, obtain mixture, by the requirement of glass mixture building material industry standard JC/T 648-1996, prepared mixture it is uniform
Degree requires to reach 95% or more；
Melting, mixture is placed on electric smelter, is melted by the main molten furnace of electric smelter, obtains molten liquid；The step
In, electric smelter vertically melts principle using cold top formula, and melting temperature controls the top insertion electrode of main molten furnace between 1500 ± 10 DEG C
Current control melts mixture by main molten furnace between 2800 ~ 2900A, and mixture is melt into molten liquid.
Clarification, molten liquid carry out clarifying treatment from the clarification material path that main molten furnace flows into electric smelter, obtain glass stoste；?
In the step, the electrode current of the clarification material path is controlled between 150 ~ 160A, will be clear when molten liquid is by clarification material path
Clear homogenizing, is converted to the uniform glass stoste of color, avoiding product after molding, there are color difference.
Molding, glass stoste is transported in molding machine by feeding machine from electric smelter, is formed, and obtains product glass
Glass, glass stoste are flowed out by the dog-hole of electric smelting furnace bottom, are input to and are centrifuged by the increased channel of feeding machine, transfer passage
In particular mold in type machine, in the product glass for obtaining corresponding type by centrifuging process.
Annealing, makes annealing treatment product glass, and annealing temperature is 600 DEG C, and annealing time is 80 minutes；And then it eliminates
The different degrees of thermal stress that product glass generates in forming process, and then improve the mechanical strength and thermostabilization of product glass
Property, optical heterogeneity that may be present in product glass is eliminated, the internal structure of product glass is finally made to maintain to stablize.
Tempering is put into annealing furnace the product glass after annealing and carries out tempering processing, and 620 degrees Celsius of tempering temperature, steel
The mesh belt operating rate for changing furnace is 0.04m/s, and tempering is primarily to improve the intensity of product glass, by carrying out air-cooled physics
Tempering processing forms the redistribution of bearing stress, internal tensile stress in product glass, reaches the mesh for improving product glass
, since the diathermancy of coloured glass is looked into, to reduce in heat treatment process because product caused by local temperature difference is excessive is burst, tempering
The speed of service is unsuitable too fast when furnace loads product glass, should control the operating rate of mesh belt and compare in 0.02 ~ 0.04 m/s
It is suitble to.
The finally formed product glass of the present embodiment is mass colour glassware, and the mass colour glassware is swollen by test
(0 ~ 200 DEG C) of swollen coefficient is 86.3*10-7/ DEG C；L*a*b value are as follows: L=23.89 ± 0.07, a=0.02 ± 0.01, b=0.28 ±
0.01；3mm thickness glass piece visible light transmittance rate are as follows: 0.48%；With the laboratory GB/T 13891-2007/ISO 718:1990 glass
Glass instrument --- thermal shock and thermal shock strength test method, heat resistance index are 145 DEG C.
Embodiment 2:
A kind of low-transmittance coloured glass color of the embodiment of the present invention 2 is prepared by following steps.
Colorant preparation, according to being formulated 73.5% manganese dioxide, 15.7% chrome green, 10.8% cobalt sesquioxide is put
Enter in mixing machine and mixed, incorporation time is 20 minutes, obtains colorant.
Stock, according to formula prepare 93.5% base starting material, 4.0% by the coloring that is prepared in colorant preparation step
Agent with 2.5% opacifier；Wherein, base starting material be 66.11% silica, 13.4% sodium oxide molybdena, 10.5% calcium oxide, 3.28%
Aluminum oxide, 1.75% magnesia, 1.36% potassium oxide, 2.3% boron oxide and 1.3% barium monoxide form；Opacifier is 73% ice crystal
Stone and 27% fluorite composition.
Base starting material, colorant are put into mixing machine with opacifier and are mixed by mixing, and incorporation time is 30 ~ 60 points
Clock, obtain mixture, by the requirement of glass mixture building material industry standard JC/T 648-1996, prepared mixture it is uniform
Degree requires to reach 95% or more；
Melting, mixture is placed on electric smelter, is melted by the main molten furnace of electric smelter, obtains molten liquid；The step
In, electric smelter vertically melts principle using cold top formula, and melting temperature controls the top insertion electrode of main molten furnace between 1500 ± 10 DEG C
Current control melts mixture by main molten furnace between 2800 ~ 2900A, and mixture is melt into molten liquid.
Clarification, molten liquid carry out clarifying treatment from the clarification material path that main molten furnace flows into electric smelter, obtain glass stoste；?
In the step, the electrode current of the clarification material path is controlled between 150 ~ 160A, will be clear when molten liquid is by clarification material path
Clear homogenizing, is converted to the uniform glass stoste of color, avoiding product after molding, there are color difference.
Molding, glass stoste is transported in molding machine by feeding machine from electric smelter, is formed, and obtains product glass
Glass, glass stoste are flowed out by the dog-hole of electric smelting furnace bottom, are input to and are centrifuged by the increased channel of feeding machine, transfer passage
In particular mold in type machine, in the product glass for obtaining corresponding type by centrifuging process.
Annealing, makes annealing treatment product glass, and annealing temperature is 600 DEG C, and annealing time is 80 minutes；And then it eliminates
The different degrees of thermal stress that product glass generates in forming process, and then improve the mechanical strength and thermostabilization of product glass
Property, optical heterogeneity that may be present in product glass is eliminated, the internal structure of product glass is finally made to maintain to stablize.
Tempering is put into annealing furnace the product glass after annealing and carries out tempering processing, and 620 degrees Celsius of tempering temperature, steel
The mesh belt operating rate for changing furnace is 0.04m/s, and tempering is primarily to improve the intensity of product glass, by carrying out air-cooled physics
Tempering processing forms the redistribution of bearing stress, internal tensile stress in product glass, reaches the mesh for improving product glass
, since the diathermancy of coloured glass is looked into, to reduce in heat treatment process because product caused by local temperature difference is excessive is burst, tempering
The speed of service is unsuitable too fast when furnace loads product glass, should control the operating rate of mesh belt and compare in 0.02 ~ 0.04 m/s
It is suitble to.
The finally formed product glass of the present embodiment is mass colour glassware, and the mass colour glassware passes through test,
(0 ~ 200 DEG C) of the coefficient of expansion is 88.1*10-7/ DEG C；L*a*b value are as follows: L=23.47 ± 0.05, a=0.01 ± 0.01, b=0.32 ±
0.01；3mm thickness glass piece visible light transmittance rate are as follows: 0.41%；With the laboratory GB/T 13891-2007/ISO 718:1990 glass
Glass instrument-thermal shock and thermal shock strength test method, heat resistance index are 140 DEG C.
Embodiment 3:
A kind of low-transmittance coloured glass color of the embodiment of the present invention 3 is prepared by following steps.
Colorant preparation puts 65.2% manganese dioxide, 22.4% chrome green, 12.4% di-iron trioxide according to formula
Enter in mixing machine and mixed, incorporation time is 20 minutes, obtains colorant.
Stock, according to formula prepare 91.5% base starting material, 3.5% by the coloring that is prepared in colorant preparation step
Agent with 5% opacifier；Wherein, base starting material is 70.2% silica, 13.3% sodium oxide molybdena, 9.6% calcium oxide, 2.17% 3 oxygen
Change two aluminium, 1.75% magnesia, 0.3% potassium oxide, 2.3% boron oxide and 0.38% barium monoxide form；Opacifier is ice crystal.
Base starting material, colorant are put into mixing machine with opacifier and are mixed by mixing, and incorporation time is 30 ~ 60 points
Clock, obtain mixture, by the requirement of glass mixture building material industry standard JC/T 648-1996, prepared mixture it is uniform
Degree requires to reach 95% or more；
Melting, mixture is placed on electric smelter, is melted by the main molten furnace of electric smelter, obtains molten liquid；The step
In, electric smelter vertically melts principle using cold top formula, and melting temperature controls the top insertion electrode of main molten furnace between 1500 ± 10 DEG C
Current control melts mixture by main molten furnace between 2800 ~ 2900A, and mixture is melt into molten liquid.
Clarification, molten liquid carry out clarifying treatment from the clarification material path that main molten furnace flows into electric smelter, obtain glass stoste；?
In the step, the electrode current of the clarification material path is controlled between 150 ~ 160A, will be clear when molten liquid is by clarification material path
Clear homogenizing, is converted to the uniform glass stoste of color, avoiding product after molding, there are color difference.
Molding, glass stoste is transported in molding machine by feeding machine from electric smelter, is formed, and obtains product glass
Glass, glass stoste are flowed out by the dog-hole of electric smelting furnace bottom, are input to and are centrifuged by the increased channel of feeding machine, transfer passage
In particular mold in type machine, in the product glass for obtaining corresponding type by centrifuging process.
Annealing, makes annealing treatment product glass, and annealing temperature is 600 DEG C, and annealing time is 80 minutes；And then it eliminates
The different degrees of thermal stress that product glass generates in forming process, and then improve the mechanical strength and thermostabilization of product glass
Property, optical heterogeneity that may be present in product glass is eliminated, the internal structure of product glass is finally made to maintain to stablize.
Tempering is put into annealing furnace the product glass after annealing and carries out tempering processing, and 620 degrees Celsius of tempering temperature, steel
The mesh belt operating rate for changing furnace is 0.04m/s, and tempering is primarily to improve the intensity of product glass, by carrying out air-cooled physics
Tempering processing forms the redistribution of bearing stress, internal tensile stress in product glass, reaches the mesh for improving product glass
, since the diathermancy of coloured glass is looked into, to reduce in heat treatment process because product caused by local temperature difference is excessive is burst, tempering
The speed of service is unsuitable too fast when furnace loads product glass, should control the operating rate of mesh belt and compare in 0.02 ~ 0.04 m/s
It is suitble to.
The finally formed product glass of the present embodiment is purple glass product, and the purple glass product passes through test,
(0 ~ 200 DEG C) of the coefficient of expansion is 89.4*10-7/ DEG C；L*a*b value are as follows: L=53.79 ± 0.11, a=9.79 ± 0.09, b=- 3.28
±0.04；3mm thickness glass piece visible light transmittance rate are as follows: 0.39%；With the laboratory GB/T 13891-2007/ISO 718:1990
Glass apparatus-thermal shock and thermal shock strength test method, heat resistance index are 130 DEG C.
Embodiment 4:
A kind of low-transmittance coloured glass color of the embodiment of the present invention 4 is prepared by following steps.
Colorant preparation, according to formula by 60.5% manganese dioxide, 14.7% chrome green, 8.5% cobalt sesquioxide,
16.3% di-iron trioxide, which is put into mixing machine, to be mixed, and incorporation time is 20 minutes, obtains colorant.
Stock, according to formula prepare 91.3% base starting material, 3.5% by the coloring that is prepared in colorant preparation step
Agent with 5.2% opacifier；Wherein, base starting material be 68.2% silica, 13.3% sodium oxide molybdena, 10.5% calcium oxide, 3.17% 3
Al 2 O, 0.5% magnesia, 1.3% potassium oxide, 2.3% boron oxide and 0.73% zinc oxide form；Opacifier is 50% ice crystal
It is formed with 50% fluorite.
Base starting material, colorant are put into mixing machine with opacifier and are mixed by mixing, and incorporation time is 30 ~ 60 points
Clock, obtain mixture, by the requirement of glass mixture building material industry standard JC/T 648-1996, prepared mixture it is uniform
Degree requires to reach 95% or more；
Melting, mixture is placed on electric smelter, is melted by the main molten furnace of electric smelter, obtains molten liquid；The step
In, electric smelter vertically melts principle using cold top formula, and melting temperature controls the top insertion electrode of main molten furnace between 1500 ± 10 DEG C
Current control melts mixture by main molten furnace between 2800 ~ 2900A, and mixture is melt into molten liquid.
Clarification, molten liquid carry out clarifying treatment from the clarification material path that main molten furnace flows into electric smelter, obtain glass stoste；?
In the step, the electrode current of the clarification material path is controlled between 150 ~ 160A, will be clear when molten liquid is by clarification material path
Clear homogenizing, is converted to the uniform glass stoste of color, avoiding product after molding, there are color difference.
Molding, glass stoste is transported in molding machine by feeding machine from electric smelter, is formed, and obtains product glass
Glass, glass stoste are flowed out by the dog-hole of electric smelting furnace bottom, are input to and are centrifuged by the increased channel of feeding machine, transfer passage
In particular mold in type machine, in the product glass for obtaining corresponding type by centrifuging process.
Annealing, makes annealing treatment product glass, and annealing temperature is 600 DEG C, and annealing time is 80 minutes；And then it eliminates
The different degrees of thermal stress that product glass generates in forming process, and then improve the mechanical strength and thermostabilization of product glass
Property, optical heterogeneity that may be present in product glass is eliminated, the internal structure of product glass is finally made to maintain to stablize.
Tempering is put into annealing furnace the product glass after annealing and carries out tempering processing, and 620 degrees Celsius of tempering temperature, steel
The mesh belt operating rate for changing furnace is 0.04m/s, and tempering is primarily to improve the intensity of product glass, by carrying out air-cooled physics
Tempering processing forms the redistribution of bearing stress, internal tensile stress in product glass, reaches the mesh for improving product glass
, since the diathermancy of coloured glass is looked into, to reduce in heat treatment process because product caused by local temperature difference is excessive is burst, tempering
The speed of service is unsuitable too fast when furnace loads product glass, should control the operating rate of mesh belt and compare in 0.02 ~ 0.04 m/s
It is suitble to.
The finally formed product glass of the present embodiment is purple glass product, and the purple glass product passes through test,
(0 ~ 200 DEG C) of the coefficient of expansion is 89.9*10-7/ DEG C；L*a*b value are as follows: L=67.51 ± 0.18, a=7.02 ± 0.07, b=- 0.91
±0.05；3mm thickness glass piece visible light transmittance rate are as follows: 0.32%；With the laboratory GB/T 13891-2007/ISO 718:1990
Glass apparatus-thermal shock and thermal shock strength test method, heat resistance index are 125 DEG C.
Embodiment 5:
A kind of low-transmittance coloured glass color of the embodiment of the present invention 5 is prepared by following steps.
78% manganese dioxide, 22% chrome green are put into mixing machine and are mixed according to formula, mixed by colorant preparation
Closing the time is 20 minutes, obtains colorant.
Stock, according to formula prepare 90% base starting material, 4.5% by the colorant that is prepared in colorant preparation step
With 5.5% opacifier；Wherein, base starting material is 70.5% silica, 13.2% sodium oxide molybdena, 11.5% calcium oxide, 1.3 %, tri- oxygen
Change two aluminium, 2.5% magnesia and 1% boron oxide form；Opacifier is fluorite.
Base starting material, colorant are put into mixing machine with opacifier and are mixed by mixing, and incorporation time is 30 ~ 60 points
Clock, obtain mixture, by the requirement of glass mixture building material industry standard JC/T 648-1996, prepared mixture it is uniform
Degree requires to reach 95% or more；
Melting, mixture is placed on electric smelter, is melted by the main molten furnace of electric smelter, obtains molten liquid；The step
In, electric smelter vertically melts principle using cold top formula, and melting temperature controls the top insertion electrode of main molten furnace between 1500 ± 10 DEG C
Current control melts mixture by main molten furnace between 2800 ~ 2900A, and mixture is melt into molten liquid.
Clarification, molten liquid carry out clarifying treatment from the clarification material path that main molten furnace flows into electric smelter, obtain glass stoste；?
In the step, the electrode current of the clarification material path is controlled between 150 ~ 160A, will be clear when molten liquid is by clarification material path
Clear homogenizing, is converted to the uniform glass stoste of color, avoiding product after molding, there are color difference.
Molding, glass stoste is transported in molding machine by feeding machine from electric smelter, is formed, and obtains product glass
Glass, glass stoste are flowed out by the dog-hole of electric smelting furnace bottom, are input to and are centrifuged by the increased channel of feeding machine, transfer passage
In particular mold in type machine, in the product glass for obtaining corresponding type by centrifuging process.
Annealing, makes annealing treatment product glass, and annealing temperature is 600 DEG C, and annealing time is 80 minutes；And then it eliminates
The different degrees of thermal stress that product glass generates in forming process, and then improve the mechanical strength and thermostabilization of product glass
Property, optical heterogeneity that may be present in product glass is eliminated, the internal structure of product glass is finally made to maintain to stablize.
Tempering is put into annealing furnace the product glass after annealing and carries out tempering processing, and 620 degrees Celsius of tempering temperature, steel
The mesh belt operating rate for changing furnace is 0.02m/s, and tempering is primarily to improve the intensity of product glass, by carrying out air-cooled physics
Tempering processing forms the redistribution of bearing stress, internal tensile stress in product glass, reaches the mesh for improving product glass
, since the diathermancy of coloured glass is looked into, to reduce in heat treatment process because product caused by local temperature difference is excessive is burst, tempering
The speed of service is unsuitable too fast when furnace loads product glass, should control the operating rate of mesh belt and compare in 0.02 ~ 0.04 m/s
It is suitble to.
The finally formed product glass of the present embodiment is mass colour glassware, and the mass colour glassware passes through test,
(0 ~ 200 DEG C) of the coefficient of expansion is 90.6*10-7/ DEG C；L*a*b value are as follows: L=71.31 ± 0.18, a=8.25 ± 0.07, b=- 0.93
±0.02；3mm thickness glass piece visible light transmittance rate are as follows: 0.27%；With the laboratory GB/T 13891-2007/ISO 718:1990
Glass apparatus-thermal shock and thermal shock strength test method, heat resistance index are 120 DEG C.
The above content is combine specific preferred embodiment to the further description done of the present invention, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention
Protection scope.
Claims (10)
1. a kind of low-transmittance coloured glass, by weight ratio be 80 ~ 97% base starting material, 1.5 ~ 10% colorant and 1.5 ~
10% opacifier is constituted, which is characterized in that the colorant includes following weight ratio ingredient:
Manganese dioxide 40 ~ 95%；
Chrome green 5 ~ 60%.
2. low-transmittance coloured glass according to claim 1, which is characterized in that the colorant further includes following weight
Than component:
Cobalt sesquioxide 0 ~ 30%；
Di-iron trioxide 0 ~ 30%.
3. low-transmittance coloured glass according to claim 1, which is characterized in that the base starting material includes following weight
Than component:
Silica 65 ~ 85%；
Sodium oxide molybdena 8 ~ 18%；
Calcium oxide 5 ~ 15%；
Aluminum oxide 1 ~ 5%；
Magnesia 0.5 ~ 5%；
Boron oxide 0.5 ~ 5%.
4. low-transmittance coloured glass according to claim 3, which is characterized in that the base starting material further includes following weight
Amount is than component:
Potassium oxide 0 ~ 2%；
Barium monoxide 0 ~ 2%；
Zinc oxide 0 ~ 2%.
5. low-transmittance coloured glass according to any one of claims 1-4, it is characterised in that: the opacifier is by ice
Spar and/or fluorite composition.
6. a kind of preparation method for preparing the low-transmittance coloured glass as described in claim 1-5, which is characterized in that including as follows
Step:
Stock prepares base starting material, colorant and the opacifier of corresponding weight ratio according to formula；
Base starting material, colorant are put into mixing machine with opacifier and are mixed by mixing, and incorporation time is 30 ~ 60 minutes, are obtained
Obtain mixture；
Melting, mixture is placed on electric smelter, is melted by the main molten furnace of electric smelter, obtains molten liquid；
Clarification, molten liquid carry out clarifying treatment from the clarification material path that main molten furnace flows into electric smelter, obtain glass stoste；
Molding, glass stoste is transported in centrifugal shaper by feeding machine from electric smelter, is formed, and obtains product glass
Glass.
7. preparation method according to claim 6, it is characterised in that: in the melting step, the electric smelter is using cold
Top formula vertically melts principle, and melting temperature is 1350 ~ 1550 DEG C, and the top insertion electrode electric current of main molten furnace is 2800 ~ 2900A.
8. preparation method according to claim 7, it is characterised in that: in the clarification steps, the electricity of the clarification material path
Electrode current is 150 ~ 160A.
9. according to preparation method described in claim 6-8 any one, which is characterized in that further include following steps:
Annealing, makes annealing treatment product glass, and annealing temperature is 600 DEG C, and annealing time is 80 minutes；
Tempering is put into annealing furnace the product glass after annealing and carries out tempering processing, and 620 degrees Celsius of tempering temperature, annealing furnace
Mesh belt operating rate be 0.02 ~ 0.04m/s.
10. preparation method according to claim 9, which is characterized in that further include walking as follows before the material preparation step
It is rapid:
The manganese dioxide of corresponding weight ratio, chrome green, cobalt sesquioxide and three are aoxidized two according to formula by colorant preparation
Iron is put into mixing machine and is mixed, and incorporation time is 20 minutes, obtains colorant.
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