CN107721182A - A kind of preparation method of foam glass - Google Patents
A kind of preparation method of foam glass Download PDFInfo
- Publication number
- CN107721182A CN107721182A CN201710923101.XA CN201710923101A CN107721182A CN 107721182 A CN107721182 A CN 107721182A CN 201710923101 A CN201710923101 A CN 201710923101A CN 107721182 A CN107721182 A CN 107721182A
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- China
- Prior art keywords
- glass
- foam glass
- preparation
- foam
- powder
- 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
- C03C11/00—Multi-cellular glass ; Porous or hollow glass or glass particles
- C03C11/007—Foam glass, e.g. obtained by incorporating a blowing agent and heating
-
- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
Abstract
A kind of preparation method of foam glass, using graphite powder as foaming agent, it is fired after being mixed with pretreated glass dust, obtain foam glass product, using the scrap glass in daily life as raw material, raw material is cleared up and dried, crush, the glass powder that particle diameter is less than 300 microns is made in spheroidal graphite, after glass dust and appropriate graphite powder are mixed, the ball milling in ball mill, 50 mesh sieves are crossed, after taking appropriate compound to be molded under pressure, load in the stainless steel mould for scribbling releasing agent and be fired by certain process conditions, obtain foam glass product.The foam glass average pore size prepared is largely 0.2mm or so, extrudate density is 460kgm 3, water absorption rate is less than 3.5%, and uniform in foaming, volumetric expansion is obvious, and stomata is small and uniform, linked hole is seldom, foaming quality is optimal, can be applied to be incubated, absorbs sound, heat-barrier material, and the two fold problem for efficiently solving environmental pollution and resource reutilization is made in foam glass.
Description
Technical field
The present invention relates to the preparation method of glass, specifically a kind of preparation method of foam glass, belong to glass industry neck
Domain.
Background technology
Foam glass is a kind of inorganic non-metal composite material, earliest by French Saint-Gobain Developeies.
It is using cullet and the various materials rich in glass phase as primary raw material, adds foaming agent, is well mixed by ball mill grinding
Batch is formed, after pre-molding, then places and is full of inside the one kind formed in a particular mold after melting, foam, anneal
The glass material of uniform stomata.It has low unit weight, insulation, sound absorption, waterproof and dampproof, acid and alkali-resistance, stable chemical performance, machine
Tool intensity height and a series of superior functions such as easy processing, are widely used in the engineerings such as oil, chemical industry, building, defence and military
Fire-proof and water-proof, cold insulation etc..
According to statistics, in some American-European developed countries, cullet accounts for the 4%-8% of municipal refuse total amount, and China often produces per year
About 3,200,000 tons of raw cullet, accounts for the 2% of domestic waste total amount.Therefore glass discarded object is produced with thermal insulation separation
The foam glass of hot function, not only contribute to realize recycling, and Municipal Solid Waste can be substantially reduced, environmental protection, tool
There is good social and economic benefit.
In the production process of foam glass, the defects of numerous species often occur, as aperture difference is too inside product
Greatly, bubble distribution is uneven, and surface irregularity, or even partial blend do not foam, and have impact on the matter of foam glass product
Amount, and foaming agent typically uses carborundum, cost is also higher.
The content of the invention
In view of the above-mentioned problems of the prior art, the present invention provides a kind of preparation method for preparing foam glass, can make
It is standby go out uniform pore diameter, surfacing, the uniform foam glass of bubble distribution, and reduce production cost.
To achieve the above object, the technical solution adopted by the present invention is：A kind of preparation method of foam glass, wherein, with
Graphite powder is foaming agent, is fired after being mixed with pretreated base glass powder, obtains foam glass product；Specific steps
It is as follows：
(1) raw material：Scrap glass in daily life is raw material, such as discarded plate glass or container glass；
(2) pretreatment of raw material：Raw material is cleared up and dried, is crushed, the glass that particle diameter is less than 300 microns is made in spheroidal graphite
Glass powder；
(3) preparation of mixed powder：After glass dust and appropriate graphite powder are mixed, the ball milling in ball mill, 50 mesh are crossed
Sieve；
(4) firing of foam glass：Mixed powder is taken after compressing, loading is scribbled in the stainless steel mould of releasing agent
It is fired, graphite volume is 1%-3%, and Ball-milling Time is 1-3 hours, and firing temperature is 820-890 DEG C, soaking time 5-
15 minutes, obtain foam glass product.
Further, the mass ratio of the foaming agent graphite powder and mixed powder is 2 percent；
Further, the mixed powder is placed in ball milling 2 hours in ball mill；
Further, the stainless steel mould equipped with the mixed powder is placed in resistance-heated furnace, firing temperature in stove
It is set as 880 DEG C in advance；
Further, the firing soaking time is set as 10 minutes, takes out mould afterwards and is air-cooled to room temperature；
Further, the particle size of described foaming agent graphite powder is between 11-20 microns.
It is 0.2mm, extrudate density 460kgm that the average pore size of the foam glass is most of-3, water absorption rate is less than
3.5%.The invention has the beneficial effect that：
Using the foam glass prepared by the present invention, using graphite powder as foaming agent, reduce production cost, prepare
The foam glass average pore size that goes out is largely 0.2mm or so, extrudate density 460kgm-3, and water absorption rate is less than 3.5%, and
Uniform in foaming, volumetric expansion is obvious, and stomata is small and uniform, and linked hole is seldom, and foaming quality is optimal.
Brief description of the drawings
Fig. 1 is the ESEM of the product of manufactured foamed glass when the foaming dosage of the present invention is 1%, 2%, 3%
(SEM) figure.
Fig. 2 is influence figure of the Ball-milling Time of the present invention to properties of foam glass.
Fig. 3 is the blowing temperature of the present invention to foam glass aperture and the influence figure of density.
Fig. 4 is the soaking time of the present invention to foam glass aperture and the influence figure of density.
Fig. 5 is ESEM (SEM) figure of the foam glass prepared under the process conditions using the present invention.
Embodiment
The present invention is described in more detail below in conjunction with the accompanying drawings:
The technical solution adopted by the present invention is：A kind of preparation method of foam glass, wherein, using graphite powder as foaming agent,
It is fired after being mixed with pretreated base glass powder, obtains foam glass product；Comprise the following steps that：
(1) raw material：Scrap glass in daily life is raw material, such as discarded plate glass or container glass；
(2) pretreatment of raw material：Raw material is cleared up and dried, is crushed, the glass that particle diameter is less than 300 microns is made in spheroidal graphite
Glass powder；
(3) preparation of compound：After glass dust and appropriate graphite powder are mixed, the ball milling in ball mill, 50 mesh sieves are crossed；
(4) firing of foam glass：After taking appropriate compound to be molded under pressure, loading scribbles releasing agent not
It is fired in rust steel mold, obtains foam glass product.
Above-mentioned glass powder raw material is taken, takes 2 percent graphite powder equal as foaming agent, mixing again according to mass ratio
It is even, mixture powder is made, through above method producing foamed glassware.As shown in figure 1, with graphite addition from 1% increase
3% is added to, average bubble diameter first increases to 0.214mm from 0.079mm, is then reduced to 0.136mm, extrudate density is then first to reduce
After increase.Under the conditions of identical blowing temperature and soaking time, graphite as foaming agent, Air Bubble Size to foam glass and
How many influences are very big.Graphite volume is very few, and foaming agent is not easy uniformly to mix in compound, causes product gas cell distribution after firing
It is uneven；Too low graphite volume can then make gas deficiency caused by oxidation simultaneously, and product porosity and bubble diameter are smaller, density compared with
Greatly.Conversely, volume is excessive, porosity and average pore size are all larger, and extrudate density is smaller, but excessive gas will cause more
Minute bubbles assemble to form macropore or intercommunicating pore, cause pore size uneven, reduce foaming quality.In addition, graphite can also
Play a part of modifying agent.Due to the chemical affinity very little of graphite and liquid glass, hardly soaked, exist by glass metal
In on the boundary (i.e. steep that wall) of liquid phase, make the surface energy of walls reduce, the easier formation of bubble is also more stable.As a result table
Bright, the foamed glass foaming that graphite volume obtains when being 2% is best in quality.
As shown in Fig. 2 mixed powder distinguish ball milling 1,1.5,2,2.5,3 hours, in 880 DEG C of blowing temperature, insulation
Foam glass is obtained after 10min, measures product aperture and density respectively, learns the extension with Ball-milling Time, average pore size elder generation
Reduce after increase, and density is first to reduce to increase afterwards, extreme point is appeared at 2.5h.When Ball-milling Time is 1h, the gas of product
Bubble footpath is smaller, and density is larger, macropore locally occurs, and it is uneven to foam, and this is short by incorporation time, and mixing is uneven to be caused
's.When Ball-milling Time is 2h, product volume expansion is obvious, and foaming is abundant, and bubble distribution is uniform, and most apertures are larger, bubble
The uniformity substantially improves.Although the density of product and ball milling 2h are more or less the same after ball milling 3h, bubble diameter is smaller, macropore or connection
The quantity in hole is substantially more, and foaming quality is poor.
Ball-milling Time is the grain fineness by influenceing compound, influences the foaming quality of foam glass indirectly.During ball milling
Between it is too short, graphite mixes uneven in glass dust, and foaming quality is poor.With the extension of Ball-milling Time, the particle of compound becomes
Carefully, the gap between particle diminishes, and with good adherence of the effusion for together, reducing gas after melting, and then improves porosity；Together
When, particle is thinner, and newly-increased granular boundary is more, more the defects of due to interface, energy is higher, reacts easier progress, therefore
Foaming quality is better.Therefore, foaming quality and power consumption are considered, Ball-milling Time selection 2h is preferable.
Blowing temperature should match with the softening temperature of glass dust, while be contemplated that the reaction temperature of graphite agent
Degree.Blowing temperature only has the softening temperature higher than glass dust, just can guarantee that the glass that gas caused by graphite oxidation can be melted
Wrap, so as to obtain superior in quality foam glass.
The present invention selects 820,840,860,880,890 DEG C successively and be used as blowing temperature, and graphite volume is 2%, during insulation
Between be 10min, be cooled to room temperature in atmosphere.Result is obtained to show as shown in Figure 3：The foam glass body prepared at 880 DEG C
Product expansion is obvious, and stomata is smaller and uniform, and foaming is abundant, best results.
, it is necessary to one section of suitable soaking time after temperature is raised to blowing temperature, to ensure that graphite agent is fully oxidized
Gas is discharged, and overcomes the viscosity of glass melt and surface tension expansion to grow up.Therefore, the length of soaking time also influences whether
The foaming quality of foam glass.
As shown in figure 4, with the extension of soaking time, average bubble diameter first increases and then decreases, reach after being incubated 12 minutes
Maximum, it is 0.278mm.Extrudate density reduces with the increase of soaking time, reaches minimum value when being incubated 12 minutes, is
534kg·m-3, extend soaking time, density is basically unchanged.When being incubated 5 minutes to 8 minutes, because compound reaction is insufficient,
Bubble is very small, and steep that wall is very thick, of poor quality；If soaking time is 10 minutes, the obtained bubble structure of foam glass is sintered
Preferably, it is distributed also more uniform；When soaking time is more than 10 minutes, although average bubble diameter is larger, density is smaller, and its is crisp simultaneously
Very big, the intensity difference of property.Therefore, when preparing foam glass, optimal foaming selection of time is incubated 10 minutes.Soaking time is too short,
Foaming agent can be made to react insufficient, gas burst size is few, and the density of product is larger, or even occurs that batch is not sintered, had
The phenomenon of powder residual；If soaking time is long, gas is more caused by oxidation, and the increase of bubble inner pressure power, volumetric expansion is larger, raw
Into bubble bubble diameter it is larger, part bubble because steep that wall it is too thin and burst, it is mutual merging form macropore or intercommunicating pore, cause bubble diameter big
Small inequality, foaming quality reduce, and therefore, optimal soaking time is 10 minutes.
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Embodiment 1：
A kind of method for preparing foam glass, its preparation process condition are：
Foaming agent graphite volume 1%, milling time 1 hour, 820 DEG C of firing temperature, soaking time 5 minutes；
Embodiment 2：
A kind of method for preparing foam glass, its preparation process condition are：
Foaming agent graphite volume 2%, milling time 2 hours, 880 DEG C of firing temperature, soaking time 10 minutes；
Embodiment 3：
A kind of method for preparing foam glass, its preparation process condition are：
Foaming agent graphite volume 3%, milling time 3 hours, 890 DEG C of firing temperature, soaking time 15 minutes；
Following table is the apparent form description for the foam glass product that three embodiments obtain：
It can be drawn from upper table and Fig. 5, the effect of embodiment 2 is best, i.e., the process conditions that the present invention is taken are to select
Excellent condition.
The above is only the preferred embodiment of the present invention, protection scope of the present invention is not limited in the embodiment above,
Every technical scheme for belonging to the principle of the invention belongs to protection scope of the present invention.
Claims (7)
1. a kind of preparation method of foam glass, it is characterized in that：Using graphite powder as foaming agent, with pretreated base glass powder
It is fired after mixing, obtains foam glass product；Comprise the following steps that：
(1) raw material：Scrap glass in daily life is raw material, such as discarded plate glass or container glass；
(2) pretreatment of raw material：Raw material is cleared up and dried, is crushed, the glass dust that particle diameter is less than 300 microns is made in spheroidal graphite
Body；
(3) preparation of mixed powder：After glass dust and foaming agent graphite powder are mixed, the ball milling in ball mill, 50 mesh sieves are crossed；
(4) firing of foam glass：Mixed powder is taken after compressing, loads in the stainless steel mould for scribbling releasing agent and carries out
Fire, graphite volume is 1%-3%, and Ball-milling Time is 1-3 hours, and firing temperature is 820-890 DEG C, and soaking time is 5-15 points
Clock, obtain foam glass product.
2. a kind of preparation method of foam glass according to claim 1, it is characterized in that：The mass ratio of the graphite powder
For 2 percent.
3. a kind of preparation method of foam glass according to claim 1 or 2, it is characterized in that：The mixed powder ball milling
Time is 2 hours.
4. a kind of preparation method of foam glass according to claim 1 or 2, it is characterized in that：The firing temperature is 880
℃。
5. a kind of preparation method of foam glass according to claim 4, it is characterized in that：The soaking time is 10 points
Clock.
6. a kind of preparation method of foam glass according to claim 4, it is characterized in that：The particle chi of described graphite powder
It is very little between 11-20 microns.
7. a kind of preparation method of foam glass according to claim 4 any one, it is characterized in that：The foam prepared
The average pore size of glassware is 0.2mm, extrudate density 460kgm-3, water absorption rate is less than 3.5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710923101.XA CN107721182A (en) | 2017-09-30 | 2017-09-30 | A kind of preparation method of foam glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710923101.XA CN107721182A (en) | 2017-09-30 | 2017-09-30 | A kind of preparation method of foam glass |
Publications (1)
| Publication Number | Publication Date |
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| CN107721182A true CN107721182A (en) | 2018-02-23 |
Family
ID=61208572
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710923101.XA Pending CN107721182A (en) | 2017-09-30 | 2017-09-30 | A kind of preparation method of foam glass |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111484255A (en) * | 2020-04-20 | 2020-08-04 | 江苏银辉生态科技有限公司 | FOAMG L AS composite veneering foam glass insulation board and processing method thereof |
| CN113620609A (en) * | 2021-08-27 | 2021-11-09 | 中国铝业股份有限公司 | Foam glass and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10203836A (en) * | 1997-01-21 | 1998-08-04 | Kamaike Yutaka | Production of foam glass |
| CN101993202A (en) * | 2010-10-15 | 2011-03-30 | 北京工业大学 | Method for manufacturing foam material by using shale and cullet |
| CN105347686A (en) * | 2015-10-28 | 2016-02-24 | 中国矿业大学 | Preparation method of uniform closed-cell nano-added foam glass |
-
2017
- 2017-09-30 CN CN201710923101.XA patent/CN107721182A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10203836A (en) * | 1997-01-21 | 1998-08-04 | Kamaike Yutaka | Production of foam glass |
| CN101993202A (en) * | 2010-10-15 | 2011-03-30 | 北京工业大学 | Method for manufacturing foam material by using shale and cullet |
| CN105347686A (en) * | 2015-10-28 | 2016-02-24 | 中国矿业大学 | Preparation method of uniform closed-cell nano-added foam glass |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111484255A (en) * | 2020-04-20 | 2020-08-04 | 江苏银辉生态科技有限公司 | FOAMG L AS composite veneering foam glass insulation board and processing method thereof |
| CN113620609A (en) * | 2021-08-27 | 2021-11-09 | 中国铝业股份有限公司 | Foam glass and preparation method thereof |
| CN113620609B (en) * | 2021-08-27 | 2022-11-01 | 中国铝业股份有限公司 | Foam glass and preparation method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180223 |
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| RJ01 | Rejection of invention patent application after publication |