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Preparation method of foam glass particles

A technology of foam glass and granules, which is applied in the field of preparation of foam glass granules, can solve the problems of limiting the use effect of excellent thermal insulation materials and filling materials, narrow particle size distribution, etc., and achieve high production efficiency, narrow size distribution, and closed pores high rate effect

Inactive Publication Date: 2011-04-06
SHAANXI UNIV OF SCI & TECH
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Problems solved by technology

[0008] In recent years, with further research and development on the application of granular foam glass, it is found that when granular foam glass is used as a thermal insulation material, the wide particle distribution range greatly limits its use as an excellent thermal insulation material and filling material. The use effect of materials, how to prepare foam glass particles with narrow particle size distribution, simple preparation process and excellent performance have become urgent problems in the production of foam glass particles

Method used

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  • Preparation method of foam glass particles

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Embodiment 1

[0019] Embodiment 1, the first step: the preparation of batch materials: first, the various cullets collected are cleaned, dried, broken, and ball-milled to 200 mesh to form glass powder; secondly, according to the mass fraction, 94% of the glass powder, 3% sodium nitrate, 1% manganese dioxide, 1% ferric oxide, and 1% sodium silicate are put into the mixer and mixed to a mixture whose uniformity is greater than 98%; then, to the mixer Spray 5% of the atomized water into the mixture, and then mix the mixture for 30 minutes to form a batch for preparing foam glass particles;

[0020] Step Two: See figure 1 , the preparation of the foamed formwork with granules: firstly, the surface of the foamed formwork 1 made of alumina with a size of 600mm×400mm×40mm was polished and smoothed; secondly, several holes with a diameter of 2mm, 2mm deep cylindrical groove 2, and clean the foam template 1 and cylindrical groove 2; then, evenly spray the alumina water grinding slurry with a partic...

Embodiment 2

[0023] Embodiment 2, the first step: preparation of batch materials: firstly, the various cullets collected are cleaned, dried, broken, and ball-milled to 200 mesh to form glass powder; secondly, according to the mass fraction, 94% of the glass powder, 3% sodium nitrate, 1% manganese dioxide, 1% ferric oxide, and 1% sodium silicate are put into the mixer and mixed to a mixture whose uniformity is greater than 98%; then, to the mixer Spray 5% of the atomized water into the mixture, and then mix the mixture for 30 minutes to form a batch for preparing foam glass particles;

[0024] Step 2: Preparation of foamed formwork with granules: firstly, the surface of the foamed formwork 1 made of sillimanite with a size of 600mm×400mm×40mm is ground and smoothed; secondly, the surface is uniformly drilled out on the flat ground surface A number of cylindrical grooves 2 with a diameter of 3 mm and a depth of 2 mm, and the foaming formwork 1 and cylindrical grooves 2 are cleaned; then, the...

Embodiment 3

[0027] Embodiment 3, the first step: the preparation of batch material: firstly, various cullets collected are cleaned, dried, crushed, and ball-milled to 200 mesh to form glass powder; secondly, according to the mass fraction, 94% of the glass powder, 3% sodium nitrate, 1% manganese dioxide, 1% ferric oxide, and 1% sodium silicate are put into the mixer and mixed to a mixture whose uniformity is greater than 98%; then, to the mixer Spray 5% of the atomized water into the mixture, and then mix the mixture for 30 minutes to form a batch for preparing foam glass particles;

[0028] Step 2: Preparation of foamed formwork with granules: First, polish the surface of the foamed formwork 1 made of silicon carbide with a size of 600mm×400mm×40mm; a cylindrical groove 2 with a diameter of 3 mm and a depth of 3 mm, and clean the foam template 1 and the cylindrical groove 2; The surface layer of the groove 2 is made into a granular foam template after natural drying;

[0029]The 400-me...

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Abstract

The invention relates to a preparation method of foam glass particles, which comprises the following steps of: milling glass balls to 200 meshes for forming glass powder; mixing the glass powder, sodium nitrate, manganese dioxide, ferric oxide and sodium silicate to be made into mixed materials; uniformly drilling a plurality of cylindrical grooves on the surface of a foaming template to obtain the particular foaming template; uniformly injecting the mixed materials into the cylindrical grooves of the particular foaming template; firing the mixed materials in a roller kiln; and pouring out specimens from the particular foaming template to obtain foam glass particles. The invention uses a template method for producing the foam glass particles, and the prepared foam glass particles have narrow dimension distribution, uniform granularity and high production efficiency. The foam glass particles prepared according to the preparation method have good structural intensity, low water absorption rate, low heat conduction coefficient and high sealing porosity, and can be used as good thermal isolation and heat insulation materials. The preparation process has simple operation process, low cost and energy saving and environment protection effect and is applicable to industrial mass production.

Description

technical field [0001] The invention relates to a method for manufacturing foam glass, in particular to a method for preparing foam glass particles. Background technique [0002] Foam glass is made of waste glass, fly ash, mica, perlite, pumice powder, volcanic ash and other substances rich in glass phase as the main raw materials, adding foaming agent, modifier, accelerator, etc., finely pulverized and uniformly mixed The ingredients are placed in a specific mold and heated at a temperature of 750-900°C to soften, foam and anneal the glass to form a porous glass material filled with numerous uniform bubbles inside. [0003] Foam glass has physical properties such as low density, high strength, and small thermal conductivity. It not only has the inherent permanence, safety, reliability, chemical corrosion resistance, and ant-mouse resistance of glass materials, but also has the advantages of being compatible with other buildings. Compared with materials, it also has a serie...

Claims

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Application Information

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IPC IPC(8): C03C11/00C03C6/02
Inventor 郭宏伟李文福高档妮谭树英周小华刘新年盖言成
Owner SHAANXI UNIV OF SCI & TECH
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