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Silica sand grain graduation non-alkali glass batch

A technology of alkali-free glass and batching materials, which is applied in glass forming, glass manufacturing equipment, manufacturing tools, etc. It can solve the problems of silica sand particle agglomeration and achieve the effects of small bubble diameter, cost saving and simple process

Inactive Publication Date: 2018-09-04
(CNBM) BENGBU DESIGN & RES INST FOR GLASS IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of agglomeration of silica sand particles during melting, and to provide an alkali-free glass batch material with silica sand particle size distribution

Method used

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  • Silica sand grain graduation non-alkali glass batch
  • Silica sand grain graduation non-alkali glass batch
  • Silica sand grain graduation non-alkali glass batch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1. 59% SiO by mass percentage 2 , 17% Al 2 o 3 , 0.2% ZrO 2 , 5% CaO, 7% B 2 o 3 , 3% MgO, 6.55% SrO, and 1.8% P 2 o 5 , 0.15% SnO, 0.15% MoO 3 , 0.15% WO 3 For batching, select silica sand particles with a particle size greater than 0.15mm for silica;

[0018] 2. Put the prepared raw materials into a ball mill for mixing and grinding, and the ball milling time is controlled at 0.25-0.5h to mix the raw materials evenly to obtain a uniform mixture;

[0019] 3. Melt the mixture obtained in step 2 in a melting furnace: the melting furnace is raised from room temperature to 1100°C for 2 hours; then it is raised from 1100°C to 1640°C for 3 hours and kept for 2 hours to obtain glass liquid;

[0020] 4. The molten glass obtained by melting enters the tin bath and is cast into shape by the iron plate casting method;

[0021] 5. Anneal the formed glass sample in an annealing kiln, keep it warm at 700°C for 0.5~1h, cool the glass sample to room temperature with the fur...

Embodiment 2

[0023] 1. 59% SiO by mass percentage 2 , 17% Al 2 o 3 , 0.2% ZrO 2 , 5% CaO, 7% B 2 o 3 , 3% MgO, 6.55% SrO, and 1.8% P 2 o 5 , 0.15% SnO, 0.15% MoO 3 , 0.15% WO 3 For batching, select silica sand particles with a particle size of 0.075-0.15mm for silica;

[0024] 2. Put the prepared raw materials into a ball mill for mixing and grinding, and the ball milling time is controlled at 0.25-0.5h to mix the raw materials evenly to obtain a uniform mixture;

[0025] 3. Melt the mixture obtained in step 2 in a melting furnace: the melting furnace is raised from room temperature to 1100°C for 2 hours; then it is raised from 1100°C to 1640°C for 3 hours and kept for 2 hours to obtain glass liquid;

[0026] 4. The molten glass obtained by melting enters the tin bath and is cast into shape by the iron plate casting method;

[0027] 5. Anneal the formed glass sample in an annealing kiln, keep it warm at 700°C for 0.5~1h, cool the glass sample to room temperature with the furnace...

Embodiment 3

[0029] 1. 59% SiO by mass percentage 2 , 17% Al 2 o 3 , 0.2% ZrO 2 , 5% CaO, 7% B 2 o 3 , 3% MgO, 6.55% SrO, and 1.8% P 2 o 5 , 0.15% SnO, 0.15% MoO 3 , 0.15% WO 3 For batching, select silica sand particles with a particle size of less than 0.075mm for silica;

[0030] 2. Put the prepared raw materials into a ball mill for mixing and grinding, and the ball milling time is controlled at 0.25-0.5h to mix the raw materials evenly to obtain a uniform mixture;

[0031] 3. Melt the mixture obtained in step 2 in a melting furnace: the melting furnace is raised from room temperature to 1100°C for 2 hours; then it is raised from 1100°C to 1640°C for 3 hours and kept for 2 hours to obtain glass liquid;

[0032] 4. The molten glass obtained by melting enters the tin bath and is cast into shape by the iron plate casting method;

[0033] 5. Anneal the formed glass sample in an annealing kiln, keep it warm at 700°C for 0.5~1h, cool the glass sample to room temperature with the fu...

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Abstract

The invention relates to a silica sand grain graduation non-alkali glass batch which comprises the following ingredients in percentage by mass: 59% of SiO2, 17% of Al2O3, 0.2% of ZrO2, 5% of CaO, 7% of B2O2, 3% of MgO, 6.55% of SrO, 1.8% of P2O5, 0.15% of SnO, 0.15% of MoO3 and 0.15% of WO3. The batch is characterized in that silica sand grains in grain sizes of greater than 0.15 mm, 0.075-0.15 mm, 0.045-0.75 mm and less than 0.045 mm account for 1.0%, 80.0%, 14.0% and 5.0% of the weight of total silica sand respectively. The batch has the benefits that high quality non-alkali glass with a small residual bubble quantity, small bubble diameter and good homogeneity is obtained through silica sand grain graduation and an optimized proportion of the silica sand grain sizes; the cost is effectively reduced through the silica sand grain graduation; a technology is simple.

Description

technical field [0001] The invention belongs to the field of flexible glass production, and relates to the production of non-alkali glass, in particular to a non-alkali glass batch material with silica sand particle size distribution. Background technique [0002] Alkali-free glass is often required for glass substrates for displays such as liquid crystal display devices. Since the glass raw material of alkali-free glass does not contain alkali metal compounds substantially, and the content of alumina is high, the glass melting process is much more difficult than conventional soda lime silicate glass. [0003] As the most important raw material of glass, silica sand accounts for the largest proportion and has the greatest impact. The melting time of silica sand is proportional to its particle size. The larger the particle size, the more difficult it is to melt. In order to reduce the melting time, the particle size of silica sand should be reduced. At present, silica sand p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/097C03B19/02C03B25/00
CPCC03B19/02C03B25/00C03C3/097
Inventor 彭寿马立云仲召进曹欣石丽芬倪嘉赵凤阳单传丽王巍巍崔介东韩娜操芳芳王萍萍高强
Owner (CNBM) BENGBU DESIGN & RES INST FOR GLASS IND CO LTD
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