SU121231A1 - A method of manufacturing alkali free glass - Google Patents
A method of manufacturing alkali free glassInfo
- Publication number
- SU121231A1 SU121231A1 SU607510A SU607510A SU121231A1 SU 121231 A1 SU121231 A1 SU 121231A1 SU 607510 A SU607510 A SU 607510A SU 607510 A SU607510 A SU 607510A SU 121231 A1 SU121231 A1 SU 121231A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- glass
- free glass
- alkali free
- manufacturing alkali
- silica
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/062—Glass compositions containing silica with less than 40% silica by weight
- C03C3/07—Glass compositions containing silica with less than 40% silica by weight containing lead
- C03C3/072—Glass compositions containing silica with less than 40% silica by weight containing lead containing boron
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
Description
По существующим способам бесщелочное термостойкое стекло получают варкой смеси, содержащей различные стеклообразующие окислы , например, SiO2, В20з, АЬОз, РЬО.According to the existing methods, alkali-free heat-resistant glass is obtained by cooking a mixture containing various glass-forming oxides, for example, SiO2, B203, ABO3, PHO.
Предлагаемый способ получени термически устойчивого стекла отличаетс тем, что вначале вар т и измельчают бесщелочное свинцовое стекло, а затем составл ют смесь, содержащую 30-60% свинцового стекла н 40-70% вибромолотого кварцевого песка (или гели кремневой кислоты), причем дл улучщени осветлени в смесь ввод т небольшое количество (1-3%) поваренной соли или другого осветлител .The proposed method of obtaining thermally stable glass is characterized in that first alkali free lead glass is ground and crushed, and then a mixture containing 30-60% of lead glass and 40-70% vibro-ground quartz sand (or silica gels) is made, and The clarification introduces a small amount (1-3%) of common salt or another clarifier into the mixture.
В качестве исходного стекла беретс бесщелочное свинцовое стекло следующего состава.Alkali-free lead glass of the following composition is taken as the initial glass.
SiOa - 31-51%; ВгОз - 10-12%; АЬОз - 2%; РЬО - 42-52%; ZrO2 - 5VO.SiOa - 31-51%; VGOs - 10-12%; ABOZ - 2%; PbG - 42-52%; ZrO2 - 5VO.
Отличительной особенностью способа вл етс то, что при нагревании смеси измельченного свинцового стекла с кремнеземом до 1650- 1690° происходит растворение кремнезема в жидкой фазе (стекле).A distinctive feature of the method is that when the mixture of crushed lead glass with silica is heated to 1650–1690 °, the silica dissolves in the liquid phase (glass).
Таким образом, за счет растворени кремнезема в стекле получаетс проваренное и хорощо осветленное термостойкое стекло с коэффициентом термического расширени примерно 15-22 .Thus, due to the dissolution of silica in glass, a boiled and well-clarified, heat-resistant glass is obtained with a thermal expansion coefficient of about 15-22.
Предмет изобретени Subject invention
1. Способ изготовлени бесщелочного стекла на основе кремнезема, глинозема, окиси бора, окиси свинца, отличающийс тем, что, с целью получени стекла повышенной термической устойчивости, его изготовл ют плавлением шихты, содерл ;ащей от 30 до 60% измельченного в порошок свинцового стекла и от 70 до 40% гел кремневой кислоты или песка, причем стекло, вводимое в щихту, должно содержать:1. A method of manufacturing an alkali-free glass based on silica, alumina, boron oxide, lead oxide, characterized in that, in order to obtain a glass with enhanced thermal stability, it is made by melting the mixture containing ground to 30 to 60% ground lead powder and from 70 to 40% gel of silicic acid or sand, and the glass introduced into the powder should contain:
121231- 2 -121231-2 -
КремнеземаSiO2 - 31-41%Silica SiO2 - 31-41%
ГлиноземаАЬОз - 2%AluminaAyOZ - 2%
Окиси бораВаОз - 10-12%BoraVaOz oxides - 10-12%
свинцаРЬО - 42-52 /о leadZiO - 42-52 / o
циркони ZrOz - 5Vo ZrOz Zirconia - 5Vo
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU607510A SU121231A1 (en) | 1958-09-11 | 1958-09-11 | A method of manufacturing alkali free glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU607510A SU121231A1 (en) | 1958-09-11 | 1958-09-11 | A method of manufacturing alkali free glass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU121231A1 true SU121231A1 (en) |
Family
ID=39873868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU607510A SU121231A1 (en) | 1958-09-11 | 1958-09-11 | A method of manufacturing alkali free glass |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU121231A1 (en) |
-
1958
- 1958-09-11 SU SU607510A patent/SU121231A1/en active
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