CN105366940A - Method for producing soda-lime glass by utilizing fly ash - Google Patents
Method for producing soda-lime glass by utilizing fly ash Download PDFInfo
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- CN105366940A CN105366940A CN201510732322.XA CN201510732322A CN105366940A CN 105366940 A CN105366940 A CN 105366940A CN 201510732322 A CN201510732322 A CN 201510732322A CN 105366940 A CN105366940 A CN 105366940A
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- lime glass
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- fly ash
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Abstract
The invention discloses a method for producing soda-lime glass by utilizing fly ash and belongs to the field of glass manufacture. A smelting furnace serves as a device. The soda-lime glass mainly comprises, by mass percentage, 80-84.5% of fly ash, 3-5% of magnesium oxide, 12-15% of sodium oxide and 0.5% of clarifying agent. The soda-lime glass is manufactured through the steps of burdening, mixing, melting, forming, annealing and cooling and the like. The method has the advantages of being simple in process, low in production cost, convenient in raw material source, mature in process and suitable for industrial production. The waste fly ash is utilized effectively, and the goal of resource recycling is achieved.
Description
Technical field
The present invention relates to glass manufacturing area, particularly a kind of method utilizing flyash to produce soda-lime glass.
Background technology
Flyash is the Main By product of coal burning.Trade waste main when the energy structure of China based on coal determines flyash, estimates that the flyash quantity discharged of China in 2015 talks endlessly 5.7 hundred million tons, and comprehensive utilization ratio is only with 35% ~ 40%, causes flyash to store up in a large number.Flyash is stored up and is not only taken a large amount of field, also causes soil pollution, atmospheric pollution, water pollutions and geologic hazard etc., causes grave danger to environment and public health.China is through development research, and flyash is building work, building materials, and all departments such as water conservancy are widely used.Total utilization of PCA mainly contains several aspect, utilizes, also just like advanced utilization ways such as mass concrete goods, senior fillers as cement raw material, cement additive, Large Hydro-Junction engineering, pump concrete etc. are conventional.Flyash is mainly used to produce pulverized fuel ash cement, and flyash brick, fly ash silicate building block, powder ash air-entrained concrete and other material of construction, also can be used as agricultural fertilizer and soil improvement agent etc.But still it is limited to there is utilization ratio, technology content and the problem such as added value is low.
Summary of the invention
The object of the invention is to solve utilization of fly ash rate problem low, with low content of technology, improves the utilization ratio of industrial waste flyash, develops high added value processing method simultaneously.
For achieving the above object, the invention provides a kind of method utilizing flyash to produce soda-lime glass, it is characterized in that, comprise the steps:
S1, flyash, magnesium oxide, sodium oxide, finings to be mixed according to the ratio of flyash 80 ~ 84.5wt%, magnesium oxide 3 ~ 5wt%, sodium oxide 12 ~ 15wt%, finings 0.5wt%;
The mixing raw material that S2,1600 ~ 1650 DEG C for the treatment of step S1 obtain, keeps 20 ~ 22 hours, makes described mixing raw material be converted into molten state;
S3, pour in mould by fused solution slurry, be cooled to less than 900 DEG C, after the solidification of described fused solution slurry, carry out anneal, then room temperature cooling, obtains soda-lime glass.
Under optimal way, finings described in step S1 is one or more mixtures in sodium sulfate, SODIUMNITRATE, white arsenic.
Under optimal way, 1600 ~ 1650 DEG C of process described in step S2 adopt electric smelter process.
Under optimal way, be annealed into described in step S3 and the fused solution of described solidification slurry is sent into annealing furnace; When described fused solution slurry temperature is down to 150 DEG C, anneal complete; Be placed in air and naturally cool to room temperature, obtain soda-lime glass.
Beneficial effect of the present invention is:
1, the present invention utilizes containing active principles such as a large amount of silicon-dioxide in flyash, and add suitable material, obtained flyash soda-lime glass, adds the utilization of flyash.
2, the present invention fills a prescription simply, has expanded the value of exploiting and utilizing of flyash, utilizes high blending flyash to process the Industrial products of high added value.
3, the present invention meets national total utilization of PCA and Regional Recycling Economy industry builds demand for development, and for protecting ecology, the utilization of resources is a promising project.
Embodiment
In order to make those skilled in the art person better understand the present invention, below in conjunction with embodiment, the present invention is further described.
The flyash used in the embodiment of the present invention is Mount Taishan, Dalian fly ash in electric power plant; In flyash, each constituent mass per-cent is as follows:
| Composition | CaO | Al 2O 3 | SiO 2 | Impurity |
| Content (%) | 12.4 | 20.9 | 65.2 | 1.5 |
Embodiment 1
S1, Material synthesis: mix in following ratio;
Stove in S2, metering: compound is sent into electric smelter, is increased to 1600 DEG C by electric smelting in-furnace temperature, keeps 20 hours, makes compound be in molten state, obtains soda-lime glass fused solution slurry.
S3, glass preparation: soda-lime glass fused solution slurry is poured in mould, now slowly soda-lime glass molten mass is cooled to less than 900 DEG C to make it to become solid, then annealing furnace is sent into, progressively lower the temperature in annealing furnace, anneal when liquid slurry temperature is down to 150 DEG C complete, finished product is sent in air, after naturally cooling to normal temperature in atmosphere, obtain finished product.Obtain soda-lime glass.
Embodiment 2
S1, Material synthesis: mix in following ratio;
Stove in S2, metering: compound is sent into electric smelter, is increased to 1650 DEG C by electric smelting in-furnace temperature, keeps 22 hours, makes compound be in molten state, obtains soda-lime glass fused solution slurry.
S3, glass preparation: soda-lime glass fused solution slurry is poured in mould, now slowly soda-lime glass molten mass is cooled to less than 900 DEG C to make it to become solid, then annealing furnace is sent into, progressively lower the temperature in annealing furnace, anneal when liquid slurry temperature is down to 150 DEG C complete, finished product is sent in air, after naturally cooling to normal temperature in atmosphere, obtain finished product.Obtain soda-lime glass.
Embodiment 3
S1, Material synthesis: mix in following ratio;
Stove in S2, metering: compound is sent into electric smelter, is increased to 1620 DEG C by electric smelting in-furnace temperature, keeps 21 hours, makes compound be in molten state, obtains soda-lime glass fused solution slurry.
S3, glass preparation: soda-lime glass fused solution slurry is poured in mould, now slowly soda-lime glass molten mass is cooled to less than 900 DEG C to make it to become solid, then annealing furnace is sent into, progressively lower the temperature in annealing furnace, anneal when liquid slurry temperature is down to 150 DEG C complete, finished product is sent in air, after naturally cooling to normal temperature in atmosphere, obtain finished product.Obtain soda-lime glass.
The present invention utilizes in flyash and contains the active principles such as a large amount of silicon-dioxide, adds suitable material.Take electric smelter as equipment, with flyash 80% ~ 84.5%; Magnesium oxide 3% ~ 5%; Sodium oxide 12% ~ 15%; Finings 0.5% is raw material, obtains soda-lime glass by operations such as batching, blending, melting, shaping, annealing, coolings.The method has the advantages such as technique is simple, production cost is low, and raw material sources are convenient, technical maturity, applicable suitability for industrialized production.And effectively waste coal ash is utilized, obtain high added value soda-lime glass, reach the object of resource circulation utilization.The soda-lime glass produced is applicable to the glassworks such as door and window.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (4)
1. utilize flyash to produce a method for soda-lime glass, it is characterized in that, comprise the steps:
S1, by flyash, magnesium oxide, sodium oxide, finings according to flyash 80 ~ 84.5wt%, magnesium oxide 3 ~ 5wt%, the ratio of sodium oxide 12 ~ 15wt%, finings 0.5wt% mixes;
The mixing raw material that S2,1600 ~ 1650 DEG C for the treatment of step S1 obtain, keeps 20 ~ 22 hours, makes described mixing raw material be converted into molten state;
S3, pour in mould by fused solution slurry, be cooled to less than 900 DEG C, after the solidification of described fused solution slurry, carry out anneal, then room temperature cooling, obtains soda-lime glass.
2. utilize flyash to produce the method for soda-lime glass according to claim 1, it is characterized in that, finings described in step S1 is one or more mixtures in sodium sulfate, SODIUMNITRATE, white arsenic.
3. utilize flyash to produce the method for soda-lime glass according to claim 1, it is characterized in that, 1600 ~ 1650 DEG C of process described in step S2 adopt electric smelter process.
4. utilize flyash to produce the method for soda-lime glass according to claim 2, it is characterized in that, be annealed into described in step S3 and the fused solution of described solidification slurry is sent into annealing furnace; When described fused solution slurry temperature is down to 150 DEG C, anneal complete; Be placed in air and naturally cool to room temperature, obtain soda-lime glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510732322.XA CN105366940A (en) | 2015-11-03 | 2015-11-03 | Method for producing soda-lime glass by utilizing fly ash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510732322.XA CN105366940A (en) | 2015-11-03 | 2015-11-03 | Method for producing soda-lime glass by utilizing fly ash |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105366940A true CN105366940A (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510732322.XA Pending CN105366940A (en) | 2015-11-03 | 2015-11-03 | Method for producing soda-lime glass by utilizing fly ash |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1057630A (en) * | 1990-06-18 | 1992-01-08 | 訾风兰 | A kind of manufacture method of cinder glass |
| CN1104186A (en) * | 1993-12-24 | 1995-06-28 | 吴广义 | Technology method for production of colour glass by using ash coal as raw material |
| US20020132722A1 (en) * | 2001-01-08 | 2002-09-19 | Alexander Raichel | Poly-crystalline compositions |
-
2015
- 2015-11-03 CN CN201510732322.XA patent/CN105366940A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1057630A (en) * | 1990-06-18 | 1992-01-08 | 訾风兰 | A kind of manufacture method of cinder glass |
| CN1104186A (en) * | 1993-12-24 | 1995-06-28 | 吴广义 | Technology method for production of colour glass by using ash coal as raw material |
| US20020132722A1 (en) * | 2001-01-08 | 2002-09-19 | Alexander Raichel | Poly-crystalline compositions |
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Application publication date: 20160302 |