CN110436772A - A kind of soda-lime-silica glass - Google Patents
A kind of soda-lime-silica glass Download PDFInfo
- Publication number
- CN110436772A CN110436772A CN201910841815.5A CN201910841815A CN110436772A CN 110436772 A CN110436772 A CN 110436772A CN 201910841815 A CN201910841815 A CN 201910841815A CN 110436772 A CN110436772 A CN 110436772A
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- CN
- China
- Prior art keywords
- glass
- lime
- soda
- saltcake
- caso
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- C03C1/002—Use of waste materials, e.g. slags
-
- 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
- C03C1/004—Refining agents
-
- 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
- C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
- C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
- C03C3/087—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal containing calcium oxide, e.g. common sheet or container glass
Abstract
The invention discloses a kind of soda-lime-silica glass, including following material composition: silica sand, dolomite, feldspar, lime stone, soda ash, glass factory's alkali desulphurization product；Wherein, the amount of each material composition is adjusted, so that soda-lime-silica glass includes: SiO271.0-73.0 weight %, CaO 7.0-9.0 weight %, MgO 3.5-4.5 weight %, Na2O+K2O 12.5-14.0 weight %, Al2O30.5-2.5 weight %.The present invention uses glass factory's alkali desulphurization product CaSO4With Ca (OH)2Saltcake and part lime stone are substituted, has not only been avoided in the prior art using saltcake erosion caused by kiln refractory material, but also realize the innoxious use of industrial waste.
Description
Technical field
The present invention relates to a kind of soda-lime-silica glass more particularly to a kind of sodium calcium silicon that the desulfurization product using glass factory produces
Glass.
Background technique
The basic ingredient of soda-lime-silica glass generally includes SiO2、CaO、MgO、Na2O、K2O、Al2O3Deng production sodium calcium silicon glass
Glass is usually using raw materials such as silica sand, dolomite, lime stone, feldspar, saltcake, soda ash.
It include saltcake (Na in traditional glass raw material to enable glass to clarify at high temperature2SO4), saltcake is at high temperature
It decomposes and generates SO2And O2Deng gas overflowing clarifies glass, while part Na needed for introducing glass2O。
But the fusion temperature of saltcake (884 DEG C) is lower, saltcake and silica sand will be under higher temperature (1200 DEG C or more)
It is just reacted, has melted but unreacted saltcake water floats on glass metal surface, there is biggish erosion to make in kiln refractory material
With causing furnace service life to shorten.
Currently, glass factory mainly uses alkali desulphurization, use Ca (OH)2The product of desulfurization is mainly CaSO4, content is in 80-
Between 90%, wherein the Ca (OH) still containing 10-20%2.However, Ca (OH)2It is middle highly basic, is a kind of harmful solid waste
Object, it is not possible to arbitrarily discard in the Nature.Although the desulfurization product of glass factory can be used for manufacture of cement, on the one hand
There are strict requirements in cement plant to the alkalinity of raw material, and another aspect glass factory generates a large amount of desulfurization product, and cement plant is only
Minimal amount of desulfurization product can be consumed, glass factory has to the desulfurization product heap of thousands of tons, not only occupies big
The space of amount, and be potential environment hidden danger.
Therefore, the desulfurization product of glass factory how is handled into problem in the urgent need to address.
Summary of the invention
To solve the above-mentioned problems, the present invention provides a kind of soda-lime-silica glass, utilize the desulfurization product of glass factory
CaSO4With Ca (OH)2Saltcake and part lime stone are substituted, the innoxious use of desulfurization product is realized, is not only advantageous to ring
It protects, but also can economize on resources.
The present invention provides a kind of soda-lime-silica glass, including following material composition: silica sand, dolomite, lime stone, feldspar,
Soda ash, glass factory's alkali desulphurization product；
Wherein, the amount of each material composition is controlled, so that soda-lime-silica glass includes:
Wherein, glass factory's alkali desulphurization product is CaSO4+Ca(OH)2, wherein CaSO4Content is 80-90 weight %, Ca
(OH)2Content is 10-20 weight %.
Present invention glass factory alkali desulphurization product CaSO4With Ca (OH)2Substitute saltcake and part lime stone, wherein
CaSO4CaO is generated after pyrolytic as glass ingredient, the SO of generation2、O2As fining gases；Ca(OH)2It is middle highly basic, has
Fluxing effect generates CaO and vapor after pyrolytic, and wherein CaO is used as glass ingredient, and vapor is with clarifying and homogenizing work
With.
Saltcake (Na is used in traditional glass formula2SO4) it is used as clarifying agent, fusion temperature (884 DEG C) lower, In of saltcake
It is initially formed saltcake water in fusion process, has biggish corrosion function to kiln refractory material, so in order to protect kiln, saltcake
It is more lower better containing rate, but mirabilite content is too low and will affect the clarification of glass metal, and thus this is a contradiction.
The present invention uses glass factory's alkali desulphurization product CaSO4With Ca (OH)2Substitute saltcake and part lime stone, preferably
Ground solves this contradiction.The present invention uses alkali desulphurization product CaSO4With Ca (OH)2, generated in 1200-1400 DEG C of decomposition
SO2, be conducive to the clarification of glass；CaSO4Fusing point be up to 1404 DEG C, the saltcake water of erosion of refractory will not be generated, wherein containing
Some Ca (OH)2It is middle highly basic, is melted at 580 DEG C, facilitate the fusing of preparing glass charge.
CaSO4, also known as anhydrous gypsum, nature content is few, and price is high, therefore, will not be CaSO in prior art4As
The raw material of glass production.
The present invention is creatively glass factory alkali desulphurization product CaSO4As the raw material of glass production, industry is realized
The harmless treatment of waste not only improves environmental protection, and has saved resource, realizes recycling for resource.
Saltcake is not included in component of glass raw material of the invention, so as to avoid using saltcake resistance to kiln in the prior art
It is corroded caused by fiery material.
Specific embodiment
The flue gas desulfurization of glass factory mainly uses milk of lime to absorb the SO in flue gas2, generate gypsum, desulfurization degree 90% with
On.Therefore, in glass factory's alkali desulphurization product, in addition to CaSO4Except, there is also the Ca of 10-20% (OH)2, due to Ca (OH)2
It is middle highly basic, is a kind of harmful solid waste, cannot arbitrarily discard in environment.
There is presently no find the method that glass factory's alkali desulphurization product is effectively treated.
The present invention is creatively glass factory alkali desulphurization product CaSO4As the raw material of glass production, existing glass is substituted
Saltcake and part lime stone in glass raw material, had both been avoided and had been invaded caused by kiln refractory material using saltcake in the prior art
Erosion, while realizing the innoxious use to glass factory's desulfurization product.
The present invention provides a kind of soda-lime-silica glass, including following material composition: silica sand, dolomite, lime stone, feldspar,
Soda ash, glass factory's alkali desulphurization product；
Wherein, the amount of each material composition is controlled, so that soda-lime-silica glass includes:
Wherein, glass factory's alkali desulphurization product is CaSO4+Ca(OH)2, wherein CaSO4Content is 80-90 weight %, Ca
(OH)2Content is 10-20 weight %.
Glass raw material does not use pure oxide generally, but uses natural mineral raw.
Silica sand also known as quartz sand, main component SiO2, it is the primary raw material for making glass.
The main component of dolomite is CaCO3And MgCO3, two kinds of main components CaO and MgO can be introduced into glass.Glass
Mainly from dolomite, insufficient section is supplemented CaO in glass by lime stone, and CaO can reduce high temperature viscosity of glass, increase low temperature
Viscosity plays the role of cosolvent.
The present invention uses glass factory's alkali desulphurization product CaSO4, CaO can also be introduced into glass, therefore, it is possible to reduce
The dosage of lime stone.
Present invention glass factory alkali desulphurization product CaSO4The saltcake in existing glass raw material is substituted, can be avoided existing
It is corroded caused by kiln refractory material in technology using saltcake.
Glass factory's alkali desulphurization product CaSO is used for the present invention4To substitute Na caused by saltcake2The loss of O content,
It can be compensated by adjusting the dosage of soda ash.
Experiment discovery, by using CaSO4It substitutes saltcake, is easier to realize the clarification of solution under high temperature.Due to high temperature
Lower CaSO4It decomposes and generates CaO, reduce high temperature viscosity of glass, bubble is easier to overflow, and clarifying effect is more preferable.
As the Al introduced in component of glass raw material by silica sand2O3When not being able to satisfy glass ingredient and needing, can by feldspar come
Supplement.Al2O3The crystallization and crystallization rate that glass can be reduced, reduce the coefficient of expansion of glass, improve viscosity, the heat of glass
Stability and mechanical strength are effective glass stabilizers.
Innovation of the invention is using glass factory alkali desulphurization product CaSO4With Ca (OH)2To substitute saltcake and part
Or whole lime stones, it avoids in the prior art using saltcake erosion caused by kiln refractory material, while realizing to glass
The innoxious use of glass factory desulfurization product.
Soda-lime-silica glass of the invention can also can change other than above-mentioned material composition including one or more
Other conventional additives of glass properties.The additive includes fluxing agent, clarifying agent, reducing agent, colorant, decolorising agent etc..
As for desulfurization product CaSO4With Ca (OH)2Specific dosage, those skilled in the art can be easily according to each
The content of raw material calculates.
For example, calculating the dosage of desulfurization product with the amount of the CaO introduced in formula.
100kg lime stone (CaCO3, molecular weight 100) and 73kg Ca (OH)2The CaO that (molecular weight 73) is introduced into glass
Amount be identical；Or 100kg lime stone (CaCO3, molecular weight 100) and 136kg CaSO4(molecular weight 136) is into glass
The amount of the CaO of introducing is identical.
If desulfurization product CaSO4+Ca(OH)2In Ca (OH)2Content be 15%, then 100kg lime stone (CaCO3)
Corresponding desulfurization product are as follows:
[1.36* (1-15%)+0.73*15%] * 100kg=127kg；
At this point, the corresponding saltcake (Na of 127kg desulfurization product2SO4, molecular weight 142) amount are as follows:
127kg* (1-15%) * 142/136=112.7kg；
That is, the desulfurization product using 127kg can substitute 100kg CaCO3With 112.7kg saltcake.
Furthermore, it is necessary to increase 112.7kg* (106/142)=84kg soda ash (Na2CO3, molecular weight 106) and supplement glass
In Na2O。
Soda-lime-silica glass according to the present invention can be produced according to the manufacturing method of conventional float glass, but unlimited
In this.Soda-lime-silica glass produced by the invention can be used in the fields such as building, automobile, household.
Embodiment
Table 1 is the embodiment of soda-lime-silica glass according to the present invention.
According to the composition ingredient of table 1, raw material that wherein embodiment 1-5 is used is silica sand, dolomite, lime stone, feldspar, pure
Alkali, glass factory's alkali desulphurization product；Wherein, glass factory's alkali desulphurization product is CaSO4+Ca(OH)2Mixture, CaSO4Content
For 80-90 weight %, Ca (OH)2Content is 10-20 weight %.Comparative example 1 uses conventional glass raw material: silica sand, dolomite,
Lime stone, feldspar, saltcake, soda ash.
Table 1
Comparative example 1 is the soda-lime-silica glass produced using traditional glass raw material, that is, uses saltcake (Na2SO4) as clarification
Agent；Embodiment according to the present invention 1-5 uses glass factory's alkali desulphurization product CaSO4With Ca (OH)2Instead of the awns in prior art
Nitre, the glass produced and the glass quality for using saltcake are quite or more preferable, and visible light transmittance when thickness of glass is 3mm is big
In 88%.Soda-lime-silica glass according to the present invention had both avoided in the prior art using saltcake caused by kiln refractory material
It corrodes, while realizing the innoxious use to glass factory's desulfurization product.
Claims (3)
1. a kind of soda-lime-silica glass, including following material composition: silica sand, dolomite, lime stone, feldspar, soda ash, glass factory's alkaline process
Desulfurization product；
Wherein, the amount of each material composition is adjusted, so that soda-lime-silica glass includes:
2. soda-lime-silica glass according to claim 1, wherein
Glass factory's alkali desulphurization product is CaSO4+Ca(OH)2。
3. soda-lime-silica glass according to claim 2, wherein
CaSO4Content is 80-90 weight %, Ca (OH)2Content is 10-20 weight %.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910841815.5A CN110436772A (en) | 2019-09-06 | 2019-09-06 | A kind of soda-lime-silica glass |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910841815.5A CN110436772A (en) | 2019-09-06 | 2019-09-06 | A kind of soda-lime-silica glass |
Publications (1)
| Publication Number | Publication Date |
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| CN110436772A true CN110436772A (en) | 2019-11-12 |
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| CN201910841815.5A Pending CN110436772A (en) | 2019-09-06 | 2019-09-06 | A kind of soda-lime-silica glass |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110922051A (en) * | 2019-12-25 | 2020-03-27 | 中建材蚌埠玻璃工业设计研究院有限公司 | High-softening-point glass for thin-film solar cell |
| CN115490421A (en) * | 2021-12-28 | 2022-12-20 | 江苏华东耀皮玻璃有限公司 | Method for recycling waste desulfurized fly ash |
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| CN105254174A (en) * | 2015-09-21 | 2016-01-20 | 中国建材桐城新能源材料有限公司 | Carbon-free low mirabilite plate glass |
| CN109279770A (en) * | 2018-10-12 | 2019-01-29 | 武汉理工大学 | The desulphurization during combustion of petroleum coke and the method that reduces mirabilite content are used in a kind of glass industry |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110922051A (en) * | 2019-12-25 | 2020-03-27 | 中建材蚌埠玻璃工业设计研究院有限公司 | High-softening-point glass for thin-film solar cell |
| CN115490421A (en) * | 2021-12-28 | 2022-12-20 | 江苏华东耀皮玻璃有限公司 | Method for recycling waste desulfurized fly ash |
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Application publication date: 20191112 |