Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Granules and method for producing same, production method for molten glass, and production method for glass article

A manufacturing method and technology for melting glass, which are applied in glass forming, manufacturing tools, feeding of melting furnaces, etc., can solve the problems of unstable glass composition, scattering of raw material powder, waste of raw materials, etc., and achieve good composition uniformity and strength. Good results with excellent strength

Active Publication Date: 2014-01-29
AGC INC
View PDF6 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the raw material powder of fine particles is thrown into the melting furnace, the raw material powder will scatter, causing problems such as unstable glass composition and waste of raw materials.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Granules and method for producing same, production method for molten glass, and production method for glass article
  • Granules and method for producing same, production method for molten glass, and production method for glass article
  • Granules and method for producing same, production method for molten glass, and production method for glass article

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1～14

[0221]

[0222] [Glass composition]

[0223] As for the glass composition, 11 types of G1 to G11 shown in Table 1 were used. The unit is mol%.

[0224] [Table 1]

[0225] glass composition

G1

G2

G3

G4

G5

G6

G7

G8

G9

G10

G11

SiO 2

64.6

65.2

65.5

65.7

65.7

65.8

62.1

61.0

60.2

66.8

68.7

al 2 o 3

11.0

11.1

11.2

11.2

11.2

11.2

10.6

10.4

10.3

7.9

8.1

B 2 o 3

7.7

3.9

2.0

1.0

0.5

0.0

7.4

3.7

0.9

5.2

0.0

MgO

5.2

4.9

4.7

4.6

4.6

4.5

5.0

4.5

4.2

0.0

0.0

CaO

4.6

4.7

4.7

4.7

4.7

4.7

12.8

18.4

22.4

0.0

0.0

SrO

4.7

8.1

9.8

10.7

11.2

11.6

0.0

0.0

0.0

0.0

0.0

BaO

0.0

0.0

0.0

0.0

0.0

0.0

0.0

...

manufacture example 6

[0274] B in the glass composition (G5) of Production Example 6 2 o 3 The glass composition (G6) of Production Example 7 and the glass composition (G11) of Production Example 16 do not contain boric acid. Therefore, the hydrate (x 2 The value of the relative diffraction peak area of ​​)[boric acid Sr hydrate] was zero, and good strength of the granules could not be obtained. In addition, the hydrate (x 1 ) [boric acid Ca hydrate] relative diffraction peak area is also zero, the hydrate (x 3 ) [Ba hydrate of boric acid] has a relative diffraction peak area of ​​zero.

[0275] Production Examples 8 to 10 are examples in which neither SrO nor BaO is contained in the glass composition. The content of calcium carbonate in the glass composition (G9) of Production Example 10 was large, and B 2 o 3 The content is less. Therefore, the hydrate (x 1 ) [boric acid Ca hydrate] had a relative diffraction peak area value of zero, and good strength of the granules could not be obtaine...

manufacture example 12

[0276] The glass compositions (G1) of Production Examples 12 and 13 are the same as those of Production Examples 1 and 2, but Production Example 12 is an example in which calcium carbonate and magnesium carbonate are used instead of dolomite, and Production Example 13 is an example in which dolomite is used instead of Examples of calcium hydroxide and magnesium hydroxide are used. Their hydrates (x 2 ) [boric acid Sr hydrate] has relatively low diffraction peak area values, and the intensity of granules is slightly poor. This is considered to be because the value of Z in Production Example 12 was particularly small, and the calcium source in Production Example 13 contained a particularly large amount of calcium hydroxide.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The present invention relates to granules, which are a glass raw material mixture for the production of alkali-free glass containing substantially no alkali metal oxides, wherein the glass structure of glass obtained from the granules is, in mol% on an oxide basis, 60-75 mol% SiO2, 5-15 mol% Al2O3, 1-9 mol% B2O3, 0-15 mol% MgO, 0-20 mol% CaO, 0-12 mol% SrO, 0-21 mol% BaO, and more than 0 mol% for the total of CaO, SrO and BaO; and for which in an X-ray diffraction spectrum obtained by means of a CuKa X-ray powder diffraction, when the diffraction peak area of quartz (100) in which 2Theta is 19.85-21.71 degrees is taken as 1, the total of the relative value of the diffraction peak area of strontium borate hydrate in which 2Theta is 10.81-13.01 degrees, the relative value of the diffraction peak area of calcium borate hydrate in which 2Theta is 11.11-13.49 degrees, and the relative value of the diffraction peak area of barium borate hydrate in which 2Theta is in the range of 10.91-13.27 degrees, is at least 0.005. The present invention also relates to a production method for the granules, a method for producing molten glass using the granules, and a method for producing a glass article using the production method for molten glass.

Description

technical field [0001] The present invention relates to granules used as a raw material of alkali-free glass, a method for producing the granules, a method for producing molten glass using the granules, and a method for producing glass articles using the method for producing molten glass. Background technique [0002] As a glass substrate etc. for various displays, the alkali-free glass which does not contain an alkali metal oxide substantially is used. In addition, due to the diversification of properties required for alkali-free glass recently, B 2 o 3 Alkali-free glass with various compositions such as glass with less content. [0003] Compared with general soda-lime glass, such alkali-free glass uses a large amount of high-melting silica raw material and does not use an alkali component that has the effect of accelerating the melting of silica raw material. Unmelted raw materials tend to remain, The uniformity of glass composition tends to fall easily. [0004] In ad...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/091C03B1/02C03C1/02G02F1/1333
CPCC03B3/026C03B1/02C03C1/026C03C12/00C03C1/00C03B1/00C03B19/1005C03C3/091C03C1/02G02F1/1333C03B3/02
Inventor 安藤良太篠原伸广
Owner AGC INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com