CN102001831A - Method for preparing full closed pore foam glass - Google Patents
Method for preparing full closed pore foam glass Download PDFInfo
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- CN102001831A CN102001831A CN 201010549907 CN201010549907A CN102001831A CN 102001831 A CN102001831 A CN 102001831A CN 201010549907 CN201010549907 CN 201010549907 CN 201010549907 A CN201010549907 A CN 201010549907A CN 102001831 A CN102001831 A CN 102001831A
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Abstract
The invention relates to a method for preparing full closed pore foam glass, which comprises the following steps of: firstly, placing fly ashes, glass powders and camwood knags into a ball mill and milling to pass through a standard sieve of 200-mesh so as to form a batch mixture; secondly, placing the batch mixture and atomized distilled water into a pan-type pelletizer to prepare spherical particles; uniformly placing the prepared spherical particles into a heat resistant mold; and finally, transferring the mold and the spherical particles into a foaming kiln and firing to obtain the full closed pore foam glass. In the invention, the full closed pore foam glass is produced by utilizing a palletizing method with the fly ashes as main materials; because of large usage amount of the fly ash, not only waste materials are turned into wealth but also the environment is protected. The foam glass prepared according to the method has favorable structural strength, low water absorption, small thermal coefficient, high closed pore rate, same pore diameter of pores and uniform pore distribution and can be used as excellent heat insulation materials. The preparation process has simple operation course, low cost, energy saving and environmental protection and is suitable for industrial production.
Description
Technical field
The present invention relates to a kind of manufacture method of multicellular glass, the preparation method of particularly a kind of full cut-off hole multicellular glass.
Background technology
Multicellular glass is to utilize the material that scrap glass, flyash, mica, perlite, pumice sand, volcanic ash etc. are rich in glassy phase to be main raw material, add whipping agent, properties-correcting agent, promotor etc., broken and be uniformly mixed into admixtion through fine powder, be placed in the particular mold and heat, make the porous glass material that glass is softening, a kind of inside of formation of foaming, anneal is full of countless even bubbles through 750～900 ℃ of temperature.
Multicellular glass has physical propertiess such as density is little, intensity is high, thermal conductivity is little, it has not only that the inherent of glass material own is permanent, security, reliability, anti-chemical corrodibility and be not subjected to advantages such as ant mouse infringement, and compare with other material of construction, also have heat insulating, waterproof and dampproof, fire prevention, acid and alkali-resistance, a series of high-performances such as density is little, physical strength is high, sound absorption.
In recent years, along with further research and development to the multicellular glass application facet, find that multicellular glass is as the heat-insulation and heat-preservation material time, bigger water-intake rate greatly reduces its good heat insulation and preservation effect, how to reduce the water-intake rate of heat-insulating multicellular glass, the closed pore void content that improves multicellular glass is present multicellular glass is needed solution badly as good heat-insulation and heat-preservation material a problem.
Flyash is a kind of seemingly pozzolana mixed material that coal dust forms behind high-temp combustion.It is that coal dust below 100 microns is worn into coal in the power station of coal combustion, sprays into burner hearth with preheated air and becomes the suspended state burning, produces to mix the high-temperature flue gas that a large amount of incombustible substance are arranged, and captures through particle collector and has just obtained flyash.The main component of flyash is silicon-dioxide, aluminium sesquioxide, ferric oxide, calcium oxide and uncompleted burned carbon.At present, flyash is mainly used to produce pulverized fuel ash cement, 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, reclaims industrial raw material and as environmentally conscious materials.But, because Chinese electric energy mainly is based on thermoelectricity, so will produce a large amount of flyash every year, although flyash can be used to produce pulverized fuel ash cement, flyash brick, fly ash silicate building block, powder ash air-entrained concrete and other material of construction, but usage quantity is still less, also have every year a large amount of flyash not to be recovered utilization, taken a large amount of farmlands and ploughed.
CN101597139A discloses a kind of method of utilizing the fly-ash Preparation foamed glass insulation board, flyash and glass powder put into ball mill for dry grinding respectively and remove the iron of flyash, glass powder and the cerium oxide dry grinding that to remove then after flyash, dry grinding behind the iron sieved form compound, compound is packed into make the flats base substrate in the steel die; Base substrate is promptly got foamed glass insulation board at 1150～1220 ℃ of sintering.The usage quantity of this method flyash only is 30～40%, and uses whipping agent cerium dioxide consumption greater than 10%, and cost is too high; In addition, blowing temperature is higher, and energy consumption is big, will be in the preparation process to deferrization of pulverized coal ash, and complex process.
(Fang Rongli such as Fang Rongli, Liu Min, Zhou Yuanlin. utilize flyash development multicellular glass, New Building Materials, 2003 (6): 38-41) according to quality than flyash: after glass powder=batching formed admixtion in 35: 55, foaming had prepared multicellular glass about 1000 ℃; Zhang Zhaoyan (Zhang Zhaoyan. the performance study of coal ash foam glass, glass and enamel, 2001 (3): 20-23) according to quality than flyash: glass powder=(30～38): after (70～62) batching forms admixtion, about 900 ℃, prepared multicellular glass; The consumption that above method prepares the used flyash of multicellular glass all is lower than 40%, although can utilize a part of flyash, consumption is still less, can not play the purpose of a large amount of recycling flyash, and this method production multicellular glass cost is higher.
CN101132999A discloses a kind of method for preparing foam glass particle; comprise the steps: in preparation jar, to prepare to comprise the water under the room temperature; the hydrated glass binding agent slurry of whipping agent and glass binder; slurry glass powder; preferred discarded glass powder; join and form the moist frit that can stir in the hydrated glass binding agent slurry; make the frit homogenizing of formation; frit is changed in the stirred pot; the stirred glass raw material makes glass ingredient partial melting at least in 2～6 hours churning time; in the granulation mixing tank, in frit, add more glass powder to form the granulation green compact; the dry granulation green compact, and the granulation green compact are foamed to form foam glass particle.Adopt prilling process to prepare the foamed glass particle in this patent, simultaneously, in preparation process, added whipping agent.In addition, the method that adopts prilling process to prepare foam glass particle is disclosed among EP0052693B1, EP0484643A1 and the EP0678482B1 equally.These methods all are not suitable for preparing the multicellular glass of totally-enclosed pore.
Multicellular glass is a kind of thermal insulation (cold insulation), sound absorption, protection against the tide, fp light high-strength building material and finishing material of superior performance, the use temperature scope be subzero 196 spend to 450 the degree, the A level is not fired and the same life-span of buildings, and thermal conductivity is 0.058, and moisture permeable coefficient is almost 0.Though other novel heat insulation materials emerge in an endless stream, multicellular glass is permanent with it, security, high reliability in fields such as low thermal isolation, moistureproof engineering, sound absorptions in occupation of more and more important position.Its production is the waste solid Reuse of materials, is protection environment and the example that obtains abundant economic interests.For flyash is fully utilized, the present invention utilizes it as the totally-enclosed cavitation bubbles foam glass of main material production heat-insulating material.Discover, if perforate void content height in the multicellular glass with increasing the water-intake rate of multicellular glass, reduces the heat insulation and preservation effect of multicellular glass as the heat-insulation and heat-preservation material greatly.At present, prepared multicellular glass rate of closed hole is greatly generally less, so the multicellular glass of high rate of closed hole is demanded exploitation urgently.
Summary of the invention
The objective of the invention is to overcome the shortcoming of above-mentioned prior art, a kind of full cut-off hole multicellular glass preparation method is provided.The prepared multicellular glass vesicular structure of the present invention is independent fully, and water-intake rate is low, can be used as good heat-insulation and heat-preservation material.
For achieving the above object, the preparation method that the present invention adopts is:
1) at first, with 75～85% flyash, 10～20% glass powder, 3～8% camwood knag are put into the ball mill ball milling to pass through 200 mesh standard sieves, the formation admixtion according to massfraction;
2) secondly, admixtion is packed in the pan-type pelletizer, add the atomizing distilled water of admixtion quality 10% in addition, admixtion is prepared into the spherical particle that particle diameter is 0.5～2mm;
3) then, prepared spherical particle is dropped in the heat-resisting mould uniformly layer thickness: 3～5cm;
4) last, mould is moved in the foaming kiln together with spherical particle, burn till according to following calcining system: drying stage, heat-up rate are 3 ℃/min, are warming up to 150 ℃ from room temperature, are incubated 1～2 hour; The intensification foaming stages, heat-up rate is 2 ℃/min, is warming up to 1200～1350 ℃, is incubated 1～2 hour; Cooling cooling stages, cooling rate are that 3 ℃/min is cooled to room temperature and gets full cut-off hole multicellular glass.
Glass powder of the present invention is that ordinary plate glass, container glass are through cleaning oven dry, fragmentation, ball milling to 200 purpose glass powder;
SiO in the described flyash
2Content is greater than 60%;
Described heat-resisting mould refractoriness is higher than 1400 ℃, and can reuse under 1350 ℃, mould inner wall brushing releasing agent in the use.
The present invention utilizes flyash to be main raw material, adopts prilling process production full cut-off hole multicellular glass, and flyash usage quantity height is not only turned waste into wealth but also protected environment.The multicellular glass structural strength that makes according to preparation method of the present invention is good, water-intake rate is low, thermal conductivity is little, sealed porosity rate height, air vent aperture size is consistent, even air hole distribution can be used as good heat-insulating material.Preparation technology's operating process of the present invention is simple, with low cost, and energy-conserving and environment-protective are suitable for suitability for industrialized production.
Embodiment
Embodiment 1,1) at first, with 75% flyash, 20% glass powder, 5% camwood knag are put into the ball mill ball milling to pass through 200 mesh standard sieves, the formation admixtion according to massfraction;
SiO in the described flyash
2Content is greater than 60%, and glass powder is that ordinary plate glass, container glass are through cleaning oven dry, fragmentation, ball milling to 200 purpose glass powder;
2) secondly, admixtion is packed in the pan-type pelletizer, add the atomizing distilled water of admixtion quality 10% in addition, admixtion is prepared into the spherical particle that particle diameter is 0.5～2mm;
3) then, prepared spherical particle is dropped in the heat-resisting mould uniformly layer thickness: 3cm; Described heat-resisting mould refractoriness is higher than 1400 ℃, and can reuse under 1350 ℃, mould inner wall brushing releasing agent in the use
4) last, mould is moved in the foaming kiln together with spherical particle, burn till according to following calcining system: drying stage, heat-up rate are 3 ℃/min, are warming up to 150 ℃ from room temperature, are incubated 1 hour; The intensification foaming stages, heat-up rate is 2 ℃/min, is warming up to 1200 ℃, is incubated 2 hours; Cooling cooling stages, cooling rate are that 3 ℃/min is cooled to room temperature and gets full cut-off hole multicellular glass.
Embodiment 2,1) at first, with 78% flyash, 18% glass powder, 4% camwood knag are put into the ball mill ball milling to pass through 200 mesh standard sieves, the formation admixtion according to massfraction;
SiO in the described flyash
2Content is greater than 60%, and glass powder is that ordinary plate glass, container glass are through cleaning oven dry, fragmentation, ball milling to 200 purpose glass powder;
2) secondly, admixtion is packed in the pan-type pelletizer, add the atomizing distilled water of admixtion quality 10% in addition, admixtion is prepared into the spherical particle that particle diameter is 0.5～2mm;
3) then, prepared spherical particle is dropped in the heat-resisting mould uniformly layer thickness: 3cm; Described heat-resisting mould refractoriness is higher than 1400 ℃, and can reuse under 1350 ℃, mould inner wall brushing releasing agent in the use
4) last, mould is moved in the foaming kiln together with spherical particle, burn till according to following calcining system: drying stage, heat-up rate are 3 ℃/min, are warming up to 150 ℃ from room temperature, are incubated 2 hours; The intensification foaming stages, heat-up rate is 2 ℃/min, is warming up to 1250 ℃, is incubated 1 hour; Cooling cooling stages, cooling rate are that 3 ℃/min is cooled to room temperature and gets full cut-off hole multicellular glass.
Embodiment 3,1) at first, with 81% flyash, 16% glass powder, 3% camwood knag are put into the ball mill ball milling to pass through 200 mesh standard sieves, the formation admixtion according to massfraction;
SiO in the described flyash
2Content is greater than 60%, and glass powder is that ordinary plate glass, container glass are through cleaning oven dry, fragmentation, ball milling to 200 purpose glass powder;
2) secondly, admixtion is packed in the pan-type pelletizer, add the atomizing distilled water of admixtion quality 10% in addition, admixtion is prepared into the spherical particle that particle diameter is 0.5～2mm;
3) then, prepared spherical particle is dropped in the heat-resisting mould uniformly layer thickness: 4cm; Described heat-resisting mould refractoriness is higher than 1400 ℃, and can reuse under 1350 ℃, mould inner wall brushing releasing agent in the use
4) last, mould is moved in the foaming kiln together with spherical particle, burn till according to following calcining system: drying stage, heat-up rate are 3 ℃/min, are warming up to 150 ℃ from room temperature, are incubated 1 hour; The intensification foaming stages, heat-up rate is 2 ℃/min, is warming up to 1290 ℃, is incubated 1.5 hours; Cooling cooling stages, cooling rate are that 3 ℃/min is cooled to room temperature and gets full cut-off hole multicellular glass.
Embodiment 4,1) at first, with 79% flyash, the camwood knag of 13% glass powder 8% is put into the ball mill ball milling to pass through 200 mesh standard sieves, the formation admixtion according to massfraction;
SiO in the described flyash
2Content is greater than 60%, and glass powder is that ordinary plate glass, container glass are through cleaning oven dry, fragmentation, ball milling to 200 purpose glass powder;
2) secondly, admixtion is packed in the pan-type pelletizer, add the atomizing distilled water of admixtion quality 10% in addition, admixtion is prepared into the spherical particle that particle diameter is 0.5～2mm;
3) then, prepared spherical particle is dropped in the heat-resisting mould uniformly layer thickness: 4cm; Described heat-resisting mould refractoriness is higher than 1400 ℃, and can reuse under 1350 ℃, mould inner wall brushing releasing agent in the use
4) last, mould is moved in the foaming kiln together with spherical particle, burn till according to following calcining system: drying stage, heat-up rate are 3 ℃/min, are warming up to 150 ℃ from room temperature, are incubated 1 hour; The intensification foaming stages, heat-up rate is 2 ℃/min, is warming up to 1320 ℃, is incubated 1 hour; Cooling cooling stages, cooling rate are that 3 ℃/min is cooled to room temperature and gets full cut-off hole multicellular glass.
Embodiment 5,1) at first, with 83% flyash, 12% glass powder, 5% camwood knag are put into the ball mill ball milling to pass through 200 mesh standard sieves, the formation admixtion according to massfraction;
SiO in the described flyash
2Content is greater than 60%, and glass powder is that ordinary plate glass, container glass are through cleaning oven dry, fragmentation, ball milling to 200 purpose glass powder;
2) secondly, admixtion is packed in the pan-type pelletizer, add the atomizing distilled water of admixtion quality 10% in addition, admixtion is prepared into the spherical particle that particle diameter is 0.5～2mm;
3) then, prepared spherical particle is dropped in the heat-resisting mould uniformly layer thickness: 35cm; Described heat-resisting mould refractoriness is higher than 1400 ℃, and can reuse under 1350 ℃, mould inner wall brushing releasing agent in the use
4) last, mould is moved in the foaming kiln together with spherical particle, burn till according to following calcining system: drying stage, heat-up rate are 3 ℃/min, are warming up to 150 ℃ from room temperature, are incubated 2 hours; The intensification foaming stages, heat-up rate is 2 ℃/min, is warming up to 1320 ℃, is incubated 2 hours; Cooling cooling stages, cooling rate are that 3 ℃/min is cooled to room temperature and gets full cut-off hole multicellular glass.
Embodiment 6,1) at first, with 85% flyash, 10% glass powder, 5% camwood knag are put into the ball mill ball milling to pass through 200 mesh standard sieves, the formation admixtion according to massfraction;
SiO in the described flyash
2Content is greater than 60%, and glass powder is that ordinary plate glass, container glass are through cleaning oven dry, fragmentation, ball milling to 200 purpose glass powder;
2) secondly, admixtion is packed in the pan-type pelletizer, add the atomizing distilled water of admixtion quality 10% in addition, admixtion is prepared into the spherical particle that particle diameter is 0.5～2mm;
3) then, prepared spherical particle is dropped in the heat-resisting mould uniformly layer thickness: 5cm; Described heat-resisting mould refractoriness is higher than 1400 ℃, and can reuse under 1350 ℃, mould inner wall brushing releasing agent in the use
4) last, mould is moved in the foaming kiln together with spherical particle, burn till according to following calcining system: drying stage, heat-up rate are 3 ℃/min, are warming up to 150 ℃ from room temperature, are incubated 2 hours; The intensification foaming stages, heat-up rate is 2 ℃/min, is warming up to 1350 ℃, is incubated 2 hours; Cooling cooling stages, cooling rate are that 3 ℃/min is cooled to room temperature and gets full cut-off hole multicellular glass.
The present invention utilizes flyash to be main material production multicellular glass, and flyash usage quantity height is not only turned waste into wealth but also protected environment, and the multicellular glass structural strength that makes according to preparation method of the present invention is good, water-intake rate is low, thermal conductivity is little, proportion is little.Preparation technology's operating process of the present invention is simple, and glass melting temperature is low, and is with low cost, and energy-conserving and environment-protective are suitable for suitability for industrialized production.Prepared high-content fly ash foam glass can be used as top ceiling and floor and the insulated roof that insulating material is used for insulation curtain wall, brick wall, concrete walls, thermal-insulation floor tile, floor plates, roof; Be used for the thermal insulation in refrigerating plant, boats and ships, refrigerator car and isothermal compartment; Also can be used for the insulation that temperature is no more than 300 ℃ heat power equipment.
Claims (4)
1. the preparation method of a full cut-off hole multicellular glass is characterized in that:
1) at first, with 75～85% flyash, 10～20% glass powder, 3～8% camwood knag are put into the ball mill ball milling to pass through 200 mesh standard sieves, the formation admixtion according to massfraction;
2) secondly, admixtion is packed in the pan-type pelletizer, add the atomizing distilled water of admixtion quality 10% in addition, admixtion is prepared into the spherical particle that particle diameter is 0.5～2mm;
3) then, prepared spherical particle is dropped in the heat-resisting mould uniformly layer thickness: 3～5cm;
4) last, mould is moved in the foaming kiln together with spherical particle, burn till according to following calcining system: drying stage, heat-up rate are 3 ℃/min, are warming up to 150 ℃ from room temperature, are incubated 1～2 hour; The intensification foaming stages, heat-up rate is 2 ℃/min, is warming up to 1200～1350 ℃, is incubated 1～2 hour; Cooling cooling stages, cooling rate are that 3 ℃/min is cooled to room temperature and gets full cut-off hole multicellular glass.
2. the preparation method of full cut-off according to claim 1 hole multicellular glass is characterized in that: described glass powder is that ordinary plate glass, container glass are through cleaning oven dry, fragmentation, ball milling to 200 purpose glass powder.
3. the preparation method of full cut-off according to claim 1 hole multicellular glass is characterized in that: SiO in the described flyash
2Content is greater than 60%.
4. the preparation method of full cut-off according to claim 1 hole multicellular glass is characterized in that: described heat-resisting mould refractoriness is higher than 1400 ℃, and can reuse under 1350 ℃, mould inner wall brushing releasing agent in the use.
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| CN2010105499075A CN102001831B (en) | 2010-11-18 | 2010-11-18 | Method for preparing full closed pore foam glass |
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|---|---|---|---|
| CN2010105499075A CN102001831B (en) | 2010-11-18 | 2010-11-18 | Method for preparing full closed pore foam glass |
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| CN102001831B CN102001831B (en) | 2012-07-25 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2515520C1 (en) * | 2012-09-10 | 2014-05-10 | федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Южно-Российский государственный технический университет (Новочеркасский политехнический институт)" | Granular foamed slag glass |
| CN104736493A (en) * | 2012-09-11 | 2015-06-24 | 3M创新有限公司 | Porous glass roofing granules |
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| US20080156038A1 (en) * | 2005-03-01 | 2008-07-03 | Dennert Poraver Gmbh | Process for Preparing Foamed Glass Granulate |
| CN101328021A (en) * | 2008-07-22 | 2008-12-24 | 内蒙古科技大学 | Porous devitrified glass and manufacturing method thereof |
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2010
- 2010-11-18 CN CN2010105499075A patent/CN102001831B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080156038A1 (en) * | 2005-03-01 | 2008-07-03 | Dennert Poraver Gmbh | Process for Preparing Foamed Glass Granulate |
| CN101328021A (en) * | 2008-07-22 | 2008-12-24 | 内蒙古科技大学 | Porous devitrified glass and manufacturing method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 《中国优秀博硕士学位论文全文数据库 (硕士) 工程科技Ⅰ辑》 20051015 邬国栋 粉煤灰资源化利用中碱溶法溶出硅铝研究 第55-56页 1-4 , 第6期 * |
| 《材料导报》 20100525 张剑波 等 泡沫玻璃生产技术的研究进展 第186-192页 1-4 第24卷, * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2515520C1 (en) * | 2012-09-10 | 2014-05-10 | федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Южно-Российский государственный технический университет (Новочеркасский политехнический институт)" | Granular foamed slag glass |
| CN104736493A (en) * | 2012-09-11 | 2015-06-24 | 3M创新有限公司 | Porous glass roofing granules |
| US10100521B2 (en) | 2012-09-11 | 2018-10-16 | 3M Innovative Properties Company | Porous glass roofing granules |
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