CN107555802A - A kind of method that foam glass is produced using garbage power plant flying dust - Google Patents
A kind of method that foam glass is produced using garbage power plant flying dust Download PDFInfo
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- CN107555802A CN107555802A CN201711032900.4A CN201711032900A CN107555802A CN 107555802 A CN107555802 A CN 107555802A CN 201711032900 A CN201711032900 A CN 201711032900A CN 107555802 A CN107555802 A CN 107555802A
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- foam glass
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- flying dust
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- foaming agent
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Abstract
The invention provides a kind of method that foam glass is produced using garbage power plant flying dust, including：Garbage power plant flying dust is subjected to dispensing, obtains and forms following frit；Foam glass raw material will be obtained after above-mentioned frit, water quenching；Burnt till after the foam glass raw material is mixed with foaming agent, annealing obtains foam glass.Foam glass rupture strength prepared by method provided by the invention is higher, and thermal conductivity factor is relatively low, has good performance.Result of the test shows that foam glass density prepared by method provided by the invention is 98~140kg/m3, normal temperature thermal conductivity factor is 0.036~0.045W/ (Km), and compression strength is 0.5~3MPa, and hole diameter is 1~4mm.Foam glass compression strength that the present invention is prepared is good, thermal conductivity factor is low, can be used as wall heat insulation material, industrial deep cooling insulation material application.
Description
Technical field
The invention belongs to garbage power plant flying dust reutilization technology field, more particularly to one kind to be produced using garbage power plant flying dust
The method of foam glass.
Background technology
One of effective means that waste incineration and generating electricity technology is handled as garbage decrement, it is that rubbish is placed in incinerator
Burnt, discharge heat energy, waste heat recovery can heat supply or generating.Discharged after gas cleaning, a small amount of residual residue discharge landfill
Or make other purposes.Incineration treatment technology feature is that treating capacity is big, volume reduction is good, innoxious thorough, and has energy recovery work
With.Therefore, the effective treating method that burning disposal is innoxious, minimizing and recycling, countries in the world are carried out to house refuse
Generally use this technology of garbage disposal.
With the fast development of China's incineration treatment of garbage, flying ash yield is huge, develops flying ash treatment technology
One of focus as the research of field of Environment Protection in recent years.Incineration of refuse flyash refers in the flue gas purification system of garbage burning factory
Obtained residue is collected, generally comprises deduster flying dust and absorption tower flying dust.Contain flue dust, chemical agent, change in flying dust
Learn reaction product etc..Flying ash is as a kind of high-specific surface area material, the not only poisonous huge sum of money such as the mercury of enriched, lead and cadmium
Category, and substantial amounts of dioxins materials are enriched, belong to dangerous solid waste, directly landfill can cause to surrounding enviroment
Serious secondary pollution, therefore, it is necessary to harmless treatment disposal is carried out to incineration of refuse flyash.
Flying dust processing method of disposal mainly has at present：Curing/stabilizing, including cement solidification, bitumen solidification, melting are admittedly
Change, chemical agent curing/stabilizing, firming body reaches landfill or recycling after leaching standard；By landfill, including
Acid extraction, alkali carries take, biology and biological agent extraction, high temperature extract, and heavy metal can carry out recycling after extraction.
Inventor considers, can increase its added value using flying dust as the raw material for preparing foam glass.
The content of the invention
In view of this, it is an object of the invention to provide it is a kind of using garbage power plant flying dust produce foam glass method,
The foam glass that method provided by the invention produces to obtain has higher mechanical strength and relatively low thermal conductivity factor.
The invention provides a kind of method that foam glass is produced using garbage power plant flying dust, including：
Garbage power plant flying dust is subjected to dispensing, obtains and forms following frit：
50~75wt% SiO2；
5~9wt% Al2O3；
3~8wt% CaO；
1~4wt% MgO；
8~15wt% Na2O；
1~5wt% K2O；
0.5~3wt% Fe2O3；
1~3wt% MnO2；
1~3wt% BaO；
2~7wt% B2O3；
Foam glass raw material will be obtained after above-mentioned frit, water quenching；
Burnt till after the foam glass raw material is mixed with foaming agent, annealing obtains foam glass.
The present invention prepares foam glass by raw material of garbage power plant flying dust, and the main component of garbage power plant flying dust includes
SiO2、Al2O3、Fe2O3, the oxide such as CaO, MgO, in addition to a small amount of K2O、Na2O、TiO2And SO3Deng, can be used as prepare bubble
The raw material of foam glass.
In the present invention, the garbage power plant flying dust main component is：
15~28wt% SiO2；
8~18wt% Al2O3；
35~60wt% CaO；
5~8wt% MgO；
0~15wt% Na2O；
0~15wt% K2O；
1~5wt% Fe2O3；
0~0.05wt% TiO2。
The present invention carries out dispensing according to the specific composition of used flying dust, and composition is following：
50~75wt% SiO2；
5~9wt% Al2O3；
3~8wt% CaO；
1~4wt% MgO；
8~15wt% Na2O；
1~5wt% K2O；
0.5~3wt% Fe2O3；
1~3wt% MnO2；
1~3wt% BaO；
2~7wt% B2O3；
Preferably, formed after dispensing as follows：
55~70wt% SiO2；；
6~8wt% Al2O3；
4~7wt% CaO；
2~3wt% MgO；
9~14wt% Na2O；
2~4wt% K2O；
1~2.5wt% Fe2O3；
1.5~2.5wt% MnO2；
1.5~2.5wt% BaO；
3~6wt% B2O3；
After dispensing, after obtained frit, water quenching, foam glass raw material is obtained.In the present invention, it is described
Melting temperature is 1400~1500 DEG C, and the time is 5~8h.Obtained glass melt is positioned in cold water after melting and enters water-filling
Quench, obtain foam glass raw material.The granularity of the foam glass raw material is 200~400 mesh.
After obtaining foam glass raw material, it is mixed with foaming agent, burnt till, anneal obtains foam glass afterwards.In this hair
In bright, the foaming agent is calcium carbonate or carbon black, and its dosage is 0.1~0.5wt% of foam glass raw material, is preferably
0.3wt%.The granularity of the foaming agent is 200~800 mesh.
Ball milling is carried out first after foam glass raw material and foaming agent are mixed to reburn into, preferably 6~8h of ball milling.After ball milling,
Firing temperature is warming up to be burnt till.The firing temperature is 850~880 DEG C, and the time is 1.5~2.5h；It is warming up to and burns till temperature
The heating rate of degree is 4~8 DEG C/min.It is annealed after burning till, annealing temperature is 550~580 DEG C, soaking time
For 20~40h.Room temperature is cooled to after insulation, rate of temperature fall is 3~5 DEG C/min.
After annealing obtains foam glass crude green body, it is cut, polished, you can obtains foam glass product.
The present invention is using garbage power plant flying dust as primary raw material, the frit by its dispensing into specific components, by melting, water
Quench to obtain foam glass raw material, then burn till, anneal after being mixed with foaming agent, you can obtain foam glass.Side provided by the invention
Foam glass compression strength prepared by method is higher, and thermal conductivity factor is relatively low, has good performance.Result of the test shows, of the invention
Foam glass density prepared by the method for offer is 98~140kg/m3, normal temperature thermal conductivity factor is 0.036~0.045W/ (K
M), compression strength is 0.5~3MPa, and hole diameter is 1~4mm.Foam glass rupture strength that the present invention is prepared is good, leads
Hot coefficient is low, can be used as wall heat insulation material, industrial deep cooling insulation material application.
Embodiment
Garbage power plant flying dust used derives from Beijing burning power plant flying dust in following embodiment.
Embodiment 1~3
Dispensing is carried out by primary raw material of burning power plant flying dust, burning power plant flying dust main component is as follows：
10.11wt% silica, 7.71wt% alundum (Al2O3), 30.05wt% calcium oxide, 3.26wt% magnesia,
1.68wt% di-iron trioxide etc., its loss on ignition are 24.21wt%.
The frit composition obtained after dispensing is as shown in table 1：
The glass material formula provided in an embodiment of the present invention of table 1
After obtaining frit, 1450 DEG C of melting 7h are warming up to, obtained glass melt is placed in cold water and enters water-filling
Quench, 200~400 mesh sieves are crossed after grinding and obtain foam glass raw material.
Foam glass raw material is mixed with the calcium carbonate of the 0.3wt% mesh sieve of mistake 300~800, ball milling 7h, with 5 DEG C/min
Speed be warming up to 860 DEG C and carry out burning till 2h.Then 30h is incubated at 560 DEG C, room temperature is cooled to 5 DEG C/min speed, cut
Cut, polish after obtain foam glass.
Performance test is carried out to obtained foam glass, as a result referring to table 2, table 2 is foam prepared by the embodiment of the present invention
The performance data of glass.
The performance data of foam glass prepared by the embodiment of the present invention of table 2
| Embodiment | Density (kg/m3) | Normal temperature thermal conductivity factor (W/ (Km)) | Rupture strength (MPa) |
| 1 | 98 | 0.035 | 1.56 |
| 2 | 102 | 0.036 | 1.77 |
| 3 | 105 | 0.040 | 1.68 |
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (9)
- A kind of 1. method that foam glass is produced using garbage power plant flying dust, it is characterised in that including：Garbage power plant flying dust is subjected to dispensing, obtains and forms following frit：50~75wt% SiO2；5~9wt% Al2O3；3~8wt% CaO；1~4wt% MgO；8~15wt% Na2O；1~5wt% K2O；0.5~3wt% Fe2O3；1~3wt% MnO2；1~3wt% BaO；2~7wt% B2O3；Foam glass raw material will be obtained after above-mentioned frit, water quenching；Burnt till after the foam glass raw material is mixed with foaming agent, annealing obtains foam glass.
- 2. according to the method for claim 1, it is characterised in that the foaming agent account for the foam glass raw material 0.1~ 0.5wt%.
- 3. according to the method for claim 1, it is characterised in that the foam glass raw material is 200~400 mesh.
- 4. according to the method for claim 1, it is characterised in that the foaming agent is 200~800 mesh.
- 5. according to the method for claim 1, it is characterised in that the melting temperature be 1400~1500 DEG C, the time be 5~ 8h。
- 6. according to the method for claim 1, it is characterised in that the firing temperature be 850~880 DEG C, the time be 1.5~ 2.5h。
- 7. according to the method for claim 1, it is characterised in that the annealing temperature is 550~580 DEG C, and soaking time is 20~40h.
- 8. according to the method for claim 1, it is characterised in that carried out after the foam glass raw material is mixed with foaming agent The step of also including ball milling before burning till, 6~8h of ball milling.
- 9. according to the method for claim 1, it is characterised in that the foaming agent is calcium carbonate or carbon black.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711032900.4A CN107555802A (en) | 2017-10-30 | 2017-10-30 | A kind of method that foam glass is produced using garbage power plant flying dust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711032900.4A CN107555802A (en) | 2017-10-30 | 2017-10-30 | A kind of method that foam glass is produced using garbage power plant flying dust |
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|---|---|
| CN107555802A true CN107555802A (en) | 2018-01-09 |
Family
ID=61032384
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711032900.4A Withdrawn CN107555802A (en) | 2017-10-30 | 2017-10-30 | A kind of method that foam glass is produced using garbage power plant flying dust |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112279498A (en) * | 2020-10-28 | 2021-01-29 | 陕西科技大学 | Foam glass prepared by utilizing fly ash and preparation method and application thereof |
| CN113135657A (en) * | 2021-03-29 | 2021-07-20 | 中节能工程技术研究院有限公司 | Method for preparing foam glass and foam glass |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101531462A (en) * | 2009-04-10 | 2009-09-16 | 北京工业大学 | Method for preparing borosilicate foam glass |
-
2017
- 2017-10-30 CN CN201711032900.4A patent/CN107555802A/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101531462A (en) * | 2009-04-10 | 2009-09-16 | 北京工业大学 | Method for preparing borosilicate foam glass |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112279498A (en) * | 2020-10-28 | 2021-01-29 | 陕西科技大学 | Foam glass prepared by utilizing fly ash and preparation method and application thereof |
| CN113135657A (en) * | 2021-03-29 | 2021-07-20 | 中节能工程技术研究院有限公司 | Method for preparing foam glass and foam glass |
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| PB01 | Publication | ||
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Application publication date: 20180109 |