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Preparation method of quartz ceramic hollow roller rod for tempered glass heating furnace

A technology of quartz ceramics and tempered glass, which is applied in glass manufacturing equipment, glass transportation equipment, glass tempering, etc. It can solve the problems of affecting the use effect, low densification degree, and disclosure of product strength, and achieves convenient operation and densification degree Effect of high and low apparent porosity

Pending Publication Date: 2022-02-11
徐州康纳高新材料科技有限公司
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the present invention provides a method for preparing a quartz ceramic hollow roller for a tempered glass heating furnace, which solves the problem that the existing tempered glass heating furnace needs to use a quartz ceramic hollow roller during processing, and the traditional quartz ceramic The production process of ceramic hollow rods, the products produced have low strength, low bulk density, low flexural strength, high apparent porosity, and low densification, which affect the use effect.

Method used

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  • Preparation method of quartz ceramic hollow roller rod for tempered glass heating furnace
  • Preparation method of quartz ceramic hollow roller rod for tempered glass heating furnace

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preparation example Construction

[0027] see figure 1 , the embodiment of the present invention provides a technical solution: a preparation method of a quartz ceramic hollow roller for a tempered glass heating furnace, the specific preparation method includes the following steps,

[0028] S1, select quartz mixed raw materials: including silicon nitride and silicon dioxide, the proportion of silicon nitride is 0.5%-5.5%, and the proportion of silicon dioxide is 94.5%-99.5%;

[0029] S2, for the raw material abrasive: Put the granules, pure water and water reducer together into the ball mill for wet grinding for 15-30 hours, then discharge the material, heat the raw materials to melt and stir them fully, and keep the melting temperature at 1300-1450°C to obtain melting Quartz mixed raw materials;

[0030] S3. Preparation of colloidal slurry: put the wet-milled slurry, organic colloid, catalyst, surfactant together with fused silica mixed raw materials into a mixer and stir evenly to make a colloidal slurry;

...

Embodiment 1

[0042] Select quartz mixed raw materials: including silicon nitride and silicon dioxide, the proportion of silicon nitride is 5.5%, the proportion of silicon dioxide is 94.5%, and the particle size of silicon dioxide is: 0.4mm-50%, Particle size: 0.2mm-30%, particle size: <0.1mm-20%;

[0043] For the raw material abrasive: put the granular material together with purified water and water reducer into the ball mill for wet grinding for 30 hours, then discharge the material, heat the raw material to melt and stir it fully, and keep the melting temperature at 1450°C to obtain the mixed raw material of fused quartz;

[0044] Preparation of colloidal slurry: Put the wet-milled slurry, organic colloid, a mixture of potassium nitrate and silicic acid, sodium dodecyl diphenyl ether disulfonate and fused quartz mixed raw materials into a mixer and stir evenly. The speed is controlled at 120r / min, and the temperature is controlled above 1200°C to make colloidal slurry;

[0045] Forming,...

Embodiment 2

[0049] Select quartz mixed raw materials: including silicon nitride and silicon dioxide, the proportion of silicon nitride is 0.5%-5.5%, the proportion of silicon dioxide is 94.5%, and the proportion of silicon dioxide is 94.5%. The mass percentage of preparation is: particle size: 0.2mm-40%, particle size: 0.1mm-30%, particle size: <0.1mm-30%;

[0050]For the raw material abrasive: Put the granular material, pure water and water reducing agent together into the ball mill for wet grinding for 15 hours, and then discharge the material, and heat the raw material to melt and fully stir, keeping the melting temperature at 1300°C to obtain the mixed raw material of fused quartz, which is During the milling process, you can also continuously inject pure water with a concentration of 17%. After adding pure water, add sodium bicarbonate water with a concentration of 78% to fully wet mill;

[0051] Preparation of colloidal slurry: a mixture of wet-milled slurry, organic colloid, potass...

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Abstract

The invention discloses a preparation method of a quartz ceramic hollow roller rod for a tempered glass heating furnace, and the specific manufacturing method comprises the following steps: S1, selecting quartz mixed raw materials including silicon nitride and silicon dioxide; S2, grinding the raw materials; S3, preparing colloid slurry: putting the wet-ground slurry, organic colloid, a catalyst, a surfactant and fused quartz mixed raw materials into a stirrer, and uniformly conducting stirring to prepare colloid slurry; S4, conducting forming, specifically building a green body through pressure forming, and adding a sintering aid accounting for 1-5% of the total amount; S5, conducting drying, specifically airing the formed green body in a normal temperature environment for 4-8 hours, and then putting the green body into a drying furnace for drying at the drying temperature of 100-120 DEG C; and S6, conducting sintering, specifically sintering the dried green body under the sintering condition of 1180-1220 DEG C, and keeping the temperature for 2-5 hours to obtain the quartz ceramic hollow roller rod. The treatment process is convenient to operate, the process is simplified, and the product is high in breaking strength, low in apparent porosity and high in densification degree.

Description

technical field [0001] The invention relates to the technical field of quartz ceramic processing, in particular to a method for preparing a quartz ceramic hollow roller for a tempered glass heating furnace. Background technique [0002] Quartz ceramic rollers are mainly used in glass high-temperature transmission mechanisms of glass tempering furnaces. The main advantages of using quartz ceramic rollers are: 1. Low thermal conductivity, small heat loss, and high uniformity of furnace temperature; 2. Hardness and The glass is close and will not scratch the glass; 3. The material is light and rigid, which can ensure the flatness of the glass. Therefore, quartz ceramic rollers are widely used in tempered glass furnaces. However, the currently used quartz ceramic rollers are all solid rollers. Although the solid roller can meet the service conditions of the glass tempering furnace, there are many shortcomings, such as the weight of the solid roller is too heavy, and the instal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/14C04B35/622C04B35/64C03B27/00C03B35/00
CPCC04B35/14C04B35/622C04B35/64C03B27/00C03B35/00C04B2235/3873C04B2235/3418C04B2235/3201C04B2235/5427C04B2235/3225C04B2235/3284C04B2235/656C04B2235/6567
Inventor 王永江陈辉
Owner 徐州康纳高新材料科技有限公司
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