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Preparation method of special raw material glass for high-performance borosilicate foam glass

A foam glass and raw material technology, which is applied in the field of borosilicate foam glass preparation, can solve the problems of poor acid corrosion resistance, low mechanical strength, and failure to reach large-scale production, and achieve good acid corrosion resistance, good pore sealing, and mechanical high intensity effect

Active Publication Date: 2019-12-10
安徽畅达绝热科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of foam glass has the following defects: (1) poor acid corrosion resistance; (2) low mechanical strength; (3) poor airtightness of pores, it is difficult to obtain closed-cell structure foam glass with consistent appearance; (4) can meet acid resistance Foam glass with good corrosion resistance, high mechanical strength, and good airtightness cannot reach the purpose of mass production

Method used

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  • Preparation method of special raw material glass for high-performance borosilicate foam glass
  • Preparation method of special raw material glass for high-performance borosilicate foam glass
  • Preparation method of special raw material glass for high-performance borosilicate foam glass

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A method for preparing special raw material glass for high-performance borosilicate foam glass, comprising the following steps:

[0025] (1) Ingredients: According to the designed material recipe, weigh all kinds of raw materials and mix them uniformly in the mixer; wherein, in terms of mass percentage, the composition of each raw material is:

[0026]

[0027]

[0028] (2) Melting: The prepared raw materials are heated at high temperature to form a uniform glass liquid without bubbles; this is a very complicated physical and chemical reaction process. The melting of glass is carried out in a melting furnace, which adopts energy-saving Type glass industrial flame pool kiln, the mixture is melted in the kiln pool, and the open flame is heated on the glass liquid surface; the melting temperature of the glass is 1300-1600 °C; it is melted into fluid glass liquid, and enters the material through the working part of the pool kiln. Road, the molten glass is gradually lo...

Embodiment 2

[0042] Change the formula of raw material in the step (1) in the embodiment 1 to be (in mass percentage):

[0043]

[0044] Prepare two groups of cellular glass products, one group is the common cellular glass (every group of 5 samples) bought on the market, and another group is the foamed glass (every group of 5 samples) of the glass of the present invention as raw material foaming, respectively in Soaked in dilute sulfuric acid for 20 days, the quality changes are as shown in Table 3:

[0045] table 3

[0046] name Original mass g Mass g after 20 days Increase and decrease rate Foam glass foamed from ordinary glass raw materials 20 20.8～21.6 ≥4％ Glass of the present invention is the foamed glass of raw material foaming 20 20.015～20.035 ≤0.175％

[0047] Other technical performance indicators are shown in Table 4:

[0048] Table 4

[0049] Technical performance index value value Measured Bulk density ≤150kg / m 3

Embodiment 3

[0051] Change the formula of raw material in the step (1) in the embodiment 1 to be (in mass percentage):

[0052]

[0053] Prepare two groups of cellular glass products, one group is the common cellular glass (every group of 5 samples) bought on the market, and another group is the foamed glass (every group of 5 samples) of the glass of the present invention as raw material foaming, respectively in Soaked in dilute sulfuric acid for 20 days, the quality changes are as shown in Table 3:

[0054] table 3

[0055] name Original mass g Mass g after 20 days Increase and decrease rate Foam glass foamed from ordinary glass raw materials 20 20.8～21.6 ≥4％ Glass of the present invention is the foamed glass of raw material foaming 20 20.013～20.033 ≤0.165％

[0056] Other technical performance indicators are shown in Table 4:

[0057] Table 4

[0058] Technical performance index value value Measured Bulk density ≤150kg / m 3

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Abstract

The invention relates to a preparation method of a special raw material glass for a high performance borosilicate foam glass. The method comprises the following steps: (1) proportioning, wherein all kinds of raw materials are weighed, and then mixed evenly in a unified mixer; (2) melting, wherein the portioned raw materials are heated by high temperature, to form even glass liquid with no bubbles; (3) molding, wherein the molten glass liquid is converted into a solid product of a fixed shape; (4) water-quenching, wherein the molded product crumbles into particles by water-quenching, and is fished out through a material fishing machine; (5) conveying and water-controlling, wherein the particle-shaped glass raw materials fished out by the material fishing machine are laid flat on a conveyor belt and transported to a material storage warehouse; a waste heat recovery device is used for recovering part of hot air; the hot air is evenly blown to the conveyor belt through an air duct, to dry water adsorbed on the glass. The foam glass foamed by using the glass as the raw materials has the advantages of being good in acid corrosion resistance, high in mechanical strength, low in thermal conductivity coefficient, good in air hole airtightness, suitable for industrial production and the like.

Description

technical field [0001] The invention relates to a preparation method of borosilicate foam glass, in particular to a preparation method of special raw material glass for high-performance borosilicate foam glass. Background technique [0002] Foam glass was first invented by Corning Corporation of Pittsburgh in the United States. It is made of cullet, foaming agent, modified additives and foaming accelerator, etc., after finely pulverizing and uniformly mixing, then melting at high temperature, foaming and annealing. Inorganic non-metallic glass materials. Because this new material has the functions of moisture-proof, fire-proof and anti-corrosion, and the glass material has the advantages of no deterioration in long-term service performance, it can be used in harsh environments such as heat insulation, cryogenic, underground, open air, flammable, moisture-prone, and chemical erosion. The next much favored by users. It is widely used in wall insulation, petroleum, chemical i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C6/00C03C11/00
CPCC03C1/00C03C11/007
Inventor 田英良黄培聪叶红卫丁晓琴
Owner 安徽畅达绝热科技有限公司