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CN103395998B - A kind of utilize high-aluminum alkali-free boron-free glass fibers waste silk to prepare multicellular glass and manufacture method - Google Patents

A kind of utilize high-aluminum alkali-free boron-free glass fibers waste silk to prepare multicellular glass and manufacture method Download PDF

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CN103395998B
CN103395998B CN201310324269.0A CN201310324269A CN103395998B CN 103395998 B CN103395998 B CN 103395998B CN 201310324269 A CN201310324269 A CN 201310324269A CN 103395998 B CN103395998 B CN 103395998B
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CN103395998A (en
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李月明
谢志翔
王竹梅
沈宗洋
欧尚瑶
洪燕
宋福生
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Jingdezhen Ceramic Institute
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Abstract

本发明公开了一种利用高铝无碱无硼玻璃纤维废丝制备的泡沫玻璃,其组成为:玻璃纤维废丝90~96wt%、SiC0.5~5wt%、焦炭0.5~5wt%、Sb2O50.5~7.5wt%、CeO20.5~7.5wt%、Na2SO40.5~7.5wt%、Na2CO30.5~7.5wt%;所述玻璃纤维废丝中含Al2O3≥12wt%;所述泡沫玻璃组成中摩尔比Na2O/Al2O3>1。本发明还公开了上述泡沫玻璃的制造方法。本发明泡沫玻璃密度低、抗压抗折强度高、质量性能优异,不仅有效提高了对工业废弃物的综合利用,而且降低了泡沫玻璃的制造成本、以及对环境造成的危害。此外,本发明制备工艺过程简单,生产成本低,适合于工业化生产。The invention discloses a foam glass prepared by using high-aluminum, alkali-free and boron-free glass fiber waste, which consists of: glass fiber waste 90-96wt%, SiC 0.5-5wt%, coke 0.5-5wt%, Sb 2 O 5 0.5-7.5wt%, CeO 2 0.5-7.5wt%, Na 2 SO 4 0.5-7.5wt%, Na 2 CO 3 0.5-7.5wt%; the glass fiber waste contains Al 2 O 3 ≥ 12wt% %; the molar ratio Na 2 O/Al 2 O 3 in the foam glass composition is >1. The invention also discloses a method for manufacturing the foam glass. The foam glass of the invention has low density, high compressive and flexural strength, and excellent quality performance, which not only effectively improves the comprehensive utilization of industrial waste, but also reduces the manufacturing cost of the foam glass and the harm to the environment. In addition, the preparation process of the present invention is simple, the production cost is low, and it is suitable for industrial production.

Description

一种利用高铝无碱无硼玻璃纤维废丝制备的泡沫玻璃及其制造方法A kind of foam glass prepared by using high-alumina, alkali-free and boron-free glass fiber waste and its manufacturing method

技术领域technical field

本发明涉及泡沫玻璃技术领域,尤其涉及一种利用无碱无硼且高铝含量的玻璃纤维废丝制备的泡沫玻璃及其制造方法。The invention relates to the technical field of foam glass, in particular to a foam glass prepared from alkali-free, boron-free and high-aluminum-content glass fiber waste and a manufacturing method thereof.

背景技术Background technique

随着我国国民经济的发展,建筑行业的需求日益扩大并提高,建筑墙体材料处于更新换代的发展时期。泡沫玻璃与传统材料和其它新型材料相比,在力学、热学、声学指标等方面均具有优异的性能,既具有保温隔热、防水防潮、防火、耐酸碱、密度小、机械强度高等一系列优越性能,又具有玻璃材料本身固有的永久性、安全性、可靠性、防化学腐蚀性和不受蚁鼠侵害等优点,可广泛应用于中温保温隔热、建筑内外墙的保温隔热、防水防潮工程、装饰工程、石油化工、冷藏、地铁和地下工程等领域。同时,生产泡沫玻璃的原料主要为废弃玻璃、玻璃纤维废丝、矿渣和粉煤灰等,这些废弃物一般都被丢弃或只经简单填埋处理,不仅浪费了大量的资源,而且给环境带来了很大的危害。泡沫玻璃的制备和应用为消化这些固体废弃物开辟了一条有效途径,使社会资源得以再生利用,且较好地解决了固态垃圾对环境的污染问题。因此,泡沫玻璃这种新型的低成本绿色节能环保产品,必将在我国新型墙体材料的变革中发挥重要作用。With the development of our country's national economy, the demand of the construction industry is expanding and improving, and the building wall materials are in the development period of replacement. Compared with traditional materials and other new materials, foam glass has excellent performance in terms of mechanics, heat, and acoustics. Superior performance, but also has the inherent permanence, safety, reliability, chemical corrosion resistance and ant-free of the glass material itself. It can be widely used in medium temperature heat insulation, heat insulation and waterproof of building interior and exterior walls. Moisture-proof engineering, decoration engineering, petrochemical, refrigeration, subway and underground engineering and other fields. At the same time, the raw materials for the production of foam glass are mainly waste glass, glass fiber waste, slag and fly ash, etc. These wastes are generally discarded or simply landfilled, which not only wastes a lot of resources, but also brings harm to the environment. Great danger has come. The preparation and application of foam glass has opened up an effective way to digest these solid wastes, so that social resources can be recycled, and the problem of environmental pollution caused by solid wastes has been better solved. Therefore, foam glass, a new type of low-cost green energy-saving and environmental protection product, will surely play an important role in the transformation of new wall materials in my country.

普通泡沫玻璃是利用碎玻璃为主要原料,通过添加发泡剂、稳泡剂、助熔剂等,经过均匀混合得到配合料,然后将配合料放入耐热钢模具中,经过预热、烧结、发泡、退火等工艺,使之形成一种内部均匀多孔的玻璃材料。这类普通泡沫玻璃具有容重小、导热系数低、吸水率低、耐酸碱、耐高温等优良特性,但是其机械强度较低,目前市场上不同规格的泡沫玻璃抗折强度在0.1~1MPa,大大限制了其作为建筑材料的使用范围。Ordinary foam glass uses cullet as the main raw material. By adding foaming agent, foam stabilizer, flux, etc., the batch is obtained by uniform mixing, and then the batch is put into a heat-resistant steel mold. After preheating, sintering, Foaming, annealing and other processes make it form a glass material with uniform and porous interior. This kind of ordinary foam glass has excellent characteristics such as small bulk density, low thermal conductivity, low water absorption, acid and alkali resistance, high temperature resistance, etc., but its mechanical strength is low. It greatly limits its scope of use as a building material.

玻璃纤维废丝是玻璃纤维生产过程中产生的固体废弃物,长期以来一直采用填埋的方法处理。现有技术里以中碱玻璃纤维(Na2O=11.04%)废丝为主要原料,加入发泡剂焦炭、石灰石等制备了泡沫玻璃。然而,由于碱性氧化物在玻璃中属于网络外体,含量多则破坏了玻璃中的[SiO4]四面体网络结构,因此所制备的泡沫玻璃其抗压和抗折强度仍然较低。Glass fiber waste is a solid waste produced in the glass fiber production process, which has been disposed of by landfill for a long time. In the prior art, foam glass is prepared by using medium-alkali glass fiber (Na 2 O = 11.04%) waste silk as the main raw material, and adding foaming agents such as coke and limestone. However, since alkali oxides are exosomes in the glass, the [SiO 4 ] tetrahedral network structure in the glass will be destroyed if the content is too high, so the compressive and flexural strengths of the prepared foam glass are still low.

无碱无硼玻璃纤维是目前应用最广泛的一种玻璃纤维,其每年产生的废弃硬丝高达12万吨。无碱无硼且高铝玻璃纤维废丝中Al2O3的百分含量在10%以上,远大于普通玻璃和中碱玻璃纤维中的Al2O3含量(<5%),利用玻璃纤维中的Al2O3,使Al3+形成[AlO4]四面体,与[SiO4]四面体组成统一的网络结构,可以提高泡沫玻璃的化学稳定性、热稳定性、机械强度。但是,无碱无硼且高含量Al2O3会导致材料的熔点很高,这对于泡沫玻璃的制备是个关键技术难题之一。同时,无硼还会致使玻璃纤维熔融时表面张力过大,不利于气泡的稳定,这是制备泡沫玻璃的关键技术难题之二。由于其具有的高熔点,若采用焦炭、石灰石等中低温发泡剂难以制备出合格的泡沫玻璃。为此,现有技术里采用高温发泡剂SiC,通过与O2反应产生CO2气体而形成气泡(SiC+O2=Si+CO2↑),但发泡过程中空气中的氧气很难进入粉料中与SiC发生反应,为此加入了供氧剂Sb2O3,但由于Sb2O3的分解温度高达1400℃,远远超过了玻璃粉的熔化温度,因此并不能起到供氧作用,导致泡沫玻璃发泡不完全,气泡壁太厚,使得材料的密度偏高。Alkali-free and boron-free glass fiber is the most widely used glass fiber at present, and the waste hard filament produced by it is as high as 120,000 tons every year. Alkali-free and boron-free, and the percentage of Al 2 O 3 in high-alumina glass fiber waste is more than 10%, which is much higher than the Al 2 O 3 content (<5%) in ordinary glass and medium-alkali glass fiber. Al 2 O 3 in Al 3+ forms [AlO 4 ] tetrahedron, which forms a unified network structure with [SiO 4 ] tetrahedron, which can improve the chemical stability, thermal stability and mechanical strength of foam glass. However, no alkali, no boron and high content of Al 2 O 3 will lead to a high melting point of the material, which is one of the key technical problems for the preparation of foam glass. At the same time, the absence of boron will also cause the surface tension of the glass fiber to be too high when it is melted, which is not conducive to the stability of the bubbles. This is the second key technical problem in the preparation of foam glass. Due to its high melting point, it is difficult to prepare qualified foam glass by using medium and low temperature foaming agents such as coke and limestone. For this reason, the high-temperature foaming agent SiC is used in the prior art to form bubbles by reacting with O 2 to generate CO 2 gas (SiC+O 2 =Si+CO 2 ↑), but the oxygen in the air is difficult to It enters the powder and reacts with SiC, for which an oxygen supply agent Sb 2 O 3 is added, but since the decomposition temperature of Sb 2 O 3 is as high as 1400°C, far exceeding the melting temperature of glass powder, it cannot provide oxygen supply. Oxygen action causes incomplete foaming of the foam glass, and the bubble wall is too thick, which makes the density of the material higher.

发明内容Contents of the invention

本发明的目的在于克服现有技术的不足,提供一种利用高铝无碱无硼玻璃纤维废丝为主要原料制备的,具有密度低、抗压抗折强度高、性能优异的高强度泡沫玻璃,以提高泡沫玻璃的质量,扩大适用范围,并有效提高对工业废弃物的综合利用,降低对环境带来的胃寒。本发明的另一目的在于提供一种生产工艺简单、生产成本低的上述高强度泡沫玻璃的制造方法,以适合于工业化生产。The purpose of the present invention is to overcome the deficiencies of the prior art and provide a high-strength foam glass with low density, high compressive and flexural strength, and excellent performance, which is prepared by using high-alumina, alkali-free, and boron-free glass fiber waste as the main raw material. , to improve the quality of foam glass, expand the scope of application, and effectively improve the comprehensive utilization of industrial waste and reduce the stomach cold caused by the environment. Another object of the present invention is to provide a method for manufacturing the above-mentioned high-strength cellular glass with simple production process and low production cost, which is suitable for industrial production.

本发明的目的通过以下技术方案予以实现:The purpose of the present invention is achieved through the following technical solutions:

本发明提供的一种利用高铝无碱无硼玻璃纤维废丝制备的泡沫玻璃,其组成为:玻璃纤维废丝90~96wt%、SiC0.5~5wt%、焦炭0.5~5wt%、Sb2O50.5~7.5wt%、CeO20.5~7.5wt%、Na2SO40.5~7.5wt%、Na2CO30.5~7.5wt%;所述玻璃纤维废丝中含Al2O3≥12wt%;所述泡沫玻璃组成中摩尔比Na2O/Al2O3>1。The present invention provides a kind of foam glass prepared by using high-alumina, alkali-free and boron-free glass fiber waste, which is composed of: 90-96wt% of glass fiber waste, 0.5-5wt% of SiC, 0.5-5wt% of coke, Sb 2 O 5 0.5-7.5wt%, CeO 2 0.5-7.5wt%, Na 2 SO 4 0.5-7.5wt%, Na 2 CO 3 0.5-7.5wt%; the glass fiber waste contains Al 2 O 3 ≥ 12wt% %; the molar ratio Na 2 O/Al 2 O 3 in the foam glass composition is >1.

本发明泡沫玻璃利用玻璃纤维废丝的高铝含量以提高材料机械强度的同时,通过添加适量的Na2CO3引入Na元素、并调整Na2O/Al2O3摩尔比大于1,使得混合后的玻璃配合料熔化温度得以降低。在此基础上引入SiC、焦炭、CeO2、Sb2O5作为复合发泡体系,由于CeO2、Sb2O5的分解温度与玻璃配合料的熔化温度相一致,这样就能产生大量的氧气,使得SiC、焦炭充分反应产生足够的气体,使材料发泡充分,气泡壁薄,从而降低了材料的密度。同时,Sb2O5分解后的产物Sb2O3能降低玻璃的表面张力,从而起到稳泡作用。The foam glass of the present invention utilizes the high aluminum content of glass fiber waste to improve the mechanical strength of the material, and at the same time introduces Na element by adding an appropriate amount of Na 2 CO 3 , and adjusts the Na 2 O/Al 2 O 3 molar ratio to be greater than 1, so that the mixed The melting temperature of the final glass batch is lowered. On this basis, introduce SiC, coke, CeO 2 , Sb 2 O 5 as a composite foaming system, since the decomposition temperature of CeO 2 and Sb 2 O 5 is consistent with the melting temperature of the glass batch, so that a large amount of oxygen can be generated , so that SiC and coke fully react to generate enough gas, so that the material is fully foamed, and the bubble wall is thin, thereby reducing the density of the material. At the same time, Sb 2 O 3 , the decomposed product of Sb 2 O 5 , can reduce the surface tension of the glass, thus playing a role in stabilizing the foam.

进一步地,本发明泡沫玻璃其优选的组成为:玻璃纤维废丝90~96wt%、SiC1~4wt%、焦炭0.5~1wt%、Sb2O50.5~2wt%、CeO20.5~2wt%、Na2SO40.5~2wt%、Na2CO30.5~3wt%。Furthermore, the preferred composition of the foam glass of the present invention is: glass fiber waste 90-96wt%, SiC 1-4wt%, coke 0.5-1wt%, Sb 2 O 5 0.5-2wt%, CeO 2 0.5-2wt%, Na 2 SO 4 0.5-2 wt%, Na 2 CO 3 0.5-3 wt%.

上述方案中,本发明泡沫玻璃所述玻璃纤维废丝的化学成分为:SiO255~65wt%、Al2O312~25wt%、CaO15~25wt%、Fe2O3<1wt%、MgO<2wt%、K2O<2wt%、Na2O<2wt%、TiO2<1wt%。In the above scheme, the chemical composition of the glass fiber waste in the foam glass of the present invention is: SiO 2 55-65wt%, Al 2 O 3 12-25wt%, CaO 15-25wt%, Fe 2 O 3 <1wt%, MgO< 2wt%, K2O< 2wt %, Na2O< 2wt %, TiO2 <1wt%.

进一步地,本发明泡沫玻璃中所述玻璃纤维废丝含Al2O3以16~20wt%为宜。Furthermore, the glass fiber waste in the foam glass of the present invention preferably contains 16-20wt% of Al 2 O 3 .

本发明的另一目的通过以下技术方案予以实现:Another object of the present invention is achieved through the following technical solutions:

本发明提供的上述利用高铝无碱无硼玻璃纤维废丝制备的泡沫玻璃的制造方法,包括以下步骤:The manufacturing method of the above-mentioned foamed glass prepared by utilizing high-alumina, alkali-free and boron-free glass fiber waste silk provided by the present invention comprises the following steps:

a、将玻璃纤维废丝清洁、烘干、球磨、过筛后得到玻璃粉;a. Clean, dry, ball mill and sieve glass fiber waste to obtain glass powder;

b、将玻璃粉及各组成加入球磨机中球磨2h形成泡沫玻璃配合料;b. Add glass powder and various components into a ball mill and mill for 2 hours to form a foam glass batch;

c、将所述泡沫玻璃配合料加入到耐热钢模具中,放入发泡炉中进行以下发泡工艺过程:c. Add the foam glass batch material into the heat-resistant steel mold, and put it into the foaming furnace to carry out the following foaming process:

预热阶段,自室温以1~5℃/min的升温速度升温至300~500℃,保温30~120min;In the preheating stage, the temperature is raised from room temperature to 300-500°C at a rate of 1-5°C/min, and the temperature is kept for 30-120 minutes;

发泡阶段,以5~15℃/min的升温速度升温至850~1050℃;In the foaming stage, the temperature is raised to 850-1050°C at a heating rate of 5-15°C/min;

稳泡阶段,在850~1050℃温度下,保温10~60min;In the foam stabilization stage, keep warm for 10-60 minutes at a temperature of 850-1050°C;

冷却阶段,以10~20℃/min的降温速度降温至500~750℃;In the cooling stage, the temperature is lowered to 500-750°C at a cooling rate of 10-20°C/min;

退火阶段,在500~750℃温度下,保温20~60min,然后随炉冷却至室温得到泡沫玻璃。In the annealing stage, the temperature is kept at 500-750°C for 20-60 minutes, and then cooled to room temperature with the furnace to obtain foam glass.

本发明具有以下有益效果:The present invention has the following beneficial effects:

本发明利用无碱无硼且高铝玻璃纤维废丝,获得了密度低、抗压抗折强度高、质量性能优异的高强度泡沫玻璃,所制得的泡沫玻璃密度小于0.22g/cm3、抗折强度大于2.2Mpa、抗压强度大于3.2Mpa,有效提高了对工业废弃物的综合利用,降低了泡沫玻璃的制造成本、以及对环境造成的危害。本发明制备工艺过程简单,生产成本低,适合于工业化生产。The present invention uses alkali-free, boron-free and high-alumina glass fiber waste to obtain high-strength foam glass with low density, high compressive and flexural strength, and excellent quality performance. The density of the prepared foam glass is less than 0.22g/cm 3 , The flexural strength is greater than 2.2Mpa and the compressive strength is greater than 3.2Mpa, which effectively improves the comprehensive utilization of industrial waste and reduces the manufacturing cost of foam glass and the harm to the environment. The preparation process of the invention is simple, the production cost is low, and it is suitable for industrialized production.

下面将结合实施例对本发明作进一步的详细描述。The present invention will be described in further detail below in conjunction with examples.

具体实施方式Detailed ways

本发明实施例采用无碱无硼且高铝(含Al2O316wt%)玻璃纤维废丝为主要原料。各实施例泡沫玻璃的原料组成如表1所示。The embodiment of the present invention uses alkali-free, boron-free and high-alumina (containing Al 2 O 3 16wt%) glass fiber waste as the main raw material. The raw material composition of foam glass of each embodiment is as shown in Table 1.

表1本发明各实施例泡沫玻璃的原料组成(wt%)Table 1 Raw material composition (wt%) of cellular glass of each embodiment of the present invention

本发明实施例泡沫玻璃的制造方法,其步骤如下:The manufacture method of cellular glass of the embodiment of the present invention, its steps are as follows:

a、将玻璃纤维废丝清洁、烘干、球磨、过250目筛后得到玻璃粉;a. Clean, dry, ball mill and pass through a 250-mesh sieve to obtain glass powder;

b、将玻璃粉及各组成加入球磨机中球磨2h形成泡沫玻璃配合料;b. Add glass powder and various components into a ball mill and mill for 2 hours to form a foam glass batch;

c、将泡沫玻璃配合料加入到耐热钢模具中,放入发泡炉中进行以下发泡工艺过程:c. Add the foam glass batch material into the heat-resistant steel mold, and put it into the foaming furnace for the following foaming process:

预热阶段,自室温以1~5℃/min的升温速度升温至300~500℃,保温30~120min;In the preheating stage, the temperature is raised from room temperature to 300-500°C at a rate of 1-5°C/min, and the temperature is kept for 30-120 minutes;

发泡阶段,以5~15℃/min的升温速度升温至850~1050℃;In the foaming stage, the temperature is raised to 850-1050°C at a heating rate of 5-15°C/min;

稳泡阶段,在850~1050℃温度下,保温10~60min;In the foam stabilization stage, keep warm for 10-60 minutes at a temperature of 850-1050°C;

冷却阶段,以10~20℃/min的降温速度降温至500~750℃;In the cooling stage, the temperature is lowered to 500-750°C at a cooling rate of 10-20°C/min;

退火阶段,在500~750℃温度下,保温20~60min,然后随炉冷却至室温得到泡沫玻璃。In the annealing stage, the temperature is kept at 500-750°C for 20-60 minutes, and then cooled to room temperature with the furnace to obtain foam glass.

本发明各实施例泡沫玻璃制造方法中发泡过程的工艺参数如表2所示。The process parameters of the foaming process in the foam glass manufacturing methods of the various embodiments of the present invention are shown in Table 2.

表2本发明各实施例泡沫玻璃制造方法发泡过程工艺参数Table 2 foaming process technological parameters of each embodiment of the present invention foam glass manufacturing method

本发明各实施例所制得到的泡沫玻璃的性能参数如表3所示。The performance parameters of the foamed glass obtained by each embodiment of the present invention are shown in Table 3.

表3本发明各实施例所制得到的泡沫玻璃的性能参数The performance parameter of the cellular glass that table 3 each embodiment of the present invention makes

Claims (5)

1.一种利用高铝无碱无硼玻璃纤维废丝制备的泡沫玻璃,其特征在于其组成为:玻璃纤维废丝90~96wt%、SiC0.5~5wt%、焦炭0.5~5wt%、Sb2O50.5~7.5wt%、CeO20.5~7.5wt%、Na2SO40.5~7.5wt%、Na2CO30.5~7.5wt%;所述玻璃纤维废丝中含Al2O3≥12wt%;所述泡沫玻璃组成中摩尔比Na2O/Al2O3>1。 1. A foamed glass prepared by utilizing high-alumina, alkali-free and boron-free glass fiber waste, characterized in that it consists of: glass fiber waste 90-96wt%, SiC0.5-5wt%, coke 0.5-5wt%, Sb 2 O 5 0.5~7.5wt%, CeO 2 0.5~7.5wt%, Na 2 SO 4 0.5~7.5wt%, Na 2 CO 3 0.5~7.5wt%; the glass fiber waste contains Al 2 O 3 ≥ 12wt%; the molar ratio Na 2 O/Al 2 O 3 in the foam glass composition is >1. 2.根据权利要求1所述的利用高铝无碱无硼玻璃纤维废丝制备的泡沫玻璃,其特征在于其组成为:玻璃纤维废丝90~96wt%、SiC1~4wt%、焦炭0.5~1wt%、Sb2O50.5~2wt%、CeO20.5~2wt%、Na2SO40.5~2wt%、Na2CO30.5~3wt%。 2. The foamed glass prepared by using high-alumina, alkali-free and boron-free glass fiber waste according to claim 1, characterized in that it consists of: glass fiber waste 90-96wt%, SiC1-4wt%, coke 0.5-1wt% %, Sb 2 O 5 0.5~2wt%, CeO 2 0.5~2wt%, Na 2 SO 4 0.5~2wt%, Na 2 CO 3 0.5~3wt%. 3.根据权利要求1所述的利用高铝无碱无硼玻璃纤维废丝制备的泡沫玻璃,其特征在于所述玻璃纤维废丝的化学成分为:SiO255~65wt%、Al2O312~25wt%、CaO15~25wt%、Fe2O3<1wt%、MgO<2wt%、K2O<2wt%、Na2O<2wt%、TiO2<1wt%。 3. The foamed glass prepared by using high-alumina, alkali-free and boron-free glass fiber waste according to claim 1, characterized in that the chemical composition of the glass fiber waste is: SiO 2 55-65wt%, Al 2 O 3 12-25wt%, CaO15-25wt %, Fe2O3 <1wt%, MgO<2wt%, K2O< 2wt %, Na2O< 2wt %, TiO2 <1wt%. 4.根据权利要求1或2或3所述的利用高铝无碱无硼玻璃纤维废丝制备的泡沫玻璃,其特征在于:所述玻璃纤维废丝含Al2O316~20wt%。 4. The foam glass prepared by using high-alumina, alkali-free and boron-free glass fiber waste according to claim 1, 2 or 3, characterized in that: the glass fiber waste contains 16-20 wt% of Al 2 O 3 . 5.权利要求1-4之一所述利用高铝无碱无硼玻璃纤维废丝制备的泡沫玻璃的制造方法,其特征在于包括以下步骤: 5. the manufacture method of the foamed glass that utilizes high-alumina, alkali-free and boron-free glass fiber waste silk to prepare described in one of claim 1-4, it is characterized in that comprising the following steps: a、将玻璃纤维废丝清洁、烘干、球磨、过筛后得到玻璃粉; a. Clean, dry, ball mill and sieve glass fiber waste to obtain glass powder; b、将玻璃粉及各组成加入球磨机中球磨2h形成泡沫玻璃配合料; b. Add glass powder and various components into a ball mill and mill for 2 hours to form a foam glass batch; c、将所述泡沫玻璃配合料加入到耐热钢模具中,放入发泡炉中进行以下发泡工艺过程: c. Add the foam glass batch material into the heat-resistant steel mold, and put it into the foaming furnace to carry out the following foaming process: 预热阶段,自室温以1~5℃/min的升温速度升温至300~500℃,保温30~120min; In the preheating stage, the temperature is raised from room temperature to 300-500°C at a rate of 1-5°C/min, and the temperature is kept for 30-120 minutes; 发泡阶段,以5~15℃/min的升温速度升温至850~1050℃; In the foaming stage, the temperature is raised to 850-1050°C at a heating rate of 5-15°C/min; 稳泡阶段,在850~1050℃温度下,保温10~60min; In the foam stabilization stage, keep warm for 10-60 minutes at a temperature of 850-1050°C; 冷却阶段,以10~20℃/min的降温速度降温至500~750℃; In the cooling stage, the temperature is lowered to 500-750°C at a cooling rate of 10-20°C/min; 退火阶段,在500~750℃温度下,保温20~60min,然后随炉冷却至室温得到泡沫玻璃。 In the annealing stage, the temperature is kept at 500-750°C for 20-60 minutes, and then cooled to room temperature with the furnace to obtain foam glass.
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CN101955319A (en) * 2010-08-26 2011-01-26 陕西科技大学 Method for preparing foamed glass by using waste fiberglass products
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