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Method and equipment for improving glass quality

A glass, quality technology, used in/or other glass substrates, clarification and homogenization, the production of glass substrates, can solve the problems of uneven temperature of glass liquid, high temperature of molten glass, stripes and other problems

Inactive Publication Date: 2007-04-18
HENAN ANCAI HI-TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Adopting the method of heating the precious metal tube wall in the clarification zone will cause the intermediate molten glass temperature to be low, and the molten glass temperature close to the clarification zone precious metal tube wall to be high
The larger the cross-sectional area of ​​the precious metal in the clarification zone, the more uneven the temperature of the glass liquid, the more uneven the flow of the glass liquid, and glass defects such as streaks will appear
[0009] Increasing the cross-section of the precious metal clarification zone and increasing the length of the precious metal clarification zone will increase the amount of precious metals; at the same time, after the working temperature of the precious metal is increased, in order to improve its service life, the wall thickness of the precious metal must be increased, so the amount of precious metals will be further increased.

Method used

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  • Method and equipment for improving glass quality
  • Method and equipment for improving glass quality
  • Method and equipment for improving glass quality

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0075] As shown in Figure 2, this example is 2 parallel clarification zones. Under the condition that the glass flow rate is 10 tons / day, the clarification zone is designed as a cylindrical shape. According to certain experiences and theories, the diameter, wall thickness and length of the clarification zone are determined as shown in the corresponding row of Example 2 in Table 1. Compared with Comparative Example 1, the amount of precious metal used in Example 2 is 20.48 kg less; the glass temperature difference is reduced from ±3°C to ±1°C; the number of bubbles larger than 0.1mm per kilogram of glass plate does not exceed 0.5; the clarification zone The operating temperature can drop from 1680°C to 1650°C; the life of the clarification zone is extended from 21 months to 26 months.

Embodiment 3

[0077] As shown in Figure 3, this example is three parallel clarification zones. Under the condition that the glass flow rate is 10 tons / day, the clarification zone is designed as a cylindrical shape. According to certain experiences and theories, the diameter, wall thickness and length of the clarification zone are determined as shown in the row corresponding to Example 3 in Table 1. Compared with Comparative Example 1, the amount of precious metal used in Example 3 is 36.65 kg less; the glass temperature difference is reduced from ±3°C to ±0.7°C; the number of bubbles larger than 0.1mm per kilogram of glass plate does not exceed 0.2; the clarification zone The operating temperature dropped from 1680°C to 1620°C, and the lifetime of the clarification channel was extended from 21 months to 26.5 months.

[0078] Through the above examples, it can be clearly seen that when the flow rate of glass is 10 tons / day, the two embodiments of the parallel clarification zone are more eff...

Embodiment 5

[0082] As shown in Figure 2, this example is 2 parallel clarification zones. Under the condition that the glass flow rate is 12 tons / day, the clarification zone is designed as a cylindrical shape. According to certain experiences and theories, the diameter, wall thickness and length of the clarification zone are determined as shown in the corresponding row of Example 5 in Table 1. Compared with Comparative Example 4, the amount of precious metal used in Example 5 is 35.68 kg less; the glass temperature difference is reduced from ±3.3°C to ±1.5°C; the number of bubbles larger than 0.1mm per kilogram of glass plate does not exceed 0.6; the clarification zone The operating temperature can drop from 1680°C to 1650°C; the life of the clarification zone is extended from 19 months to 24.5 months.

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Abstract

The present invention discloses a method for raising glass quality and its equipment. It includes glass melting furnace, clarifying zone and stirring zone, etc. It is characterized by that between glass melting furnace and stirring zone at least two parallel clarifying zones are set, the molten glass can parallelly flow through said clarifying zones, then can be collected in the stirring zone, so that it not only can meet the requirements for making large flow capacity of molten glass be passed through said clarifying zones, but also can raise glass quality.

Description

technical field [0001] The present invention relates to the clarification of glass. Specifically, the present invention is applied to the production and manufacture of glass substrates, and relates to the clarification and homogenization in the production and manufacture of these products, so as to meet the requirements of high-quality glass products. A particularly important application of the invention is the production of glass substrates for liquid crystal displays, TFTs, etc. and / or others. Background technique [0002] The basic manufacturing of glass used in liquid crystal displays is an advanced technology, and the final glass basically requires no glass defects such as bubbles and streaks. [0003] The general glass substrate production process is that after the glass is melted, the molten glass passes through a clarification zone made of precious metal materials, the melting temperature is raised, and the molten glass is stirred and adjust...

Claims

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Application Information

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IPC IPC(8): C03B5/235C03B5/225
CPCC03B5/225Y02P40/57
Inventor 贾伟李震李耀辉徐建军田红星
Owner HENAN ANCAI HI-TECH
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