GB1049479A - Process for the production of repeatedly frothable foam glass - Google Patents
Process for the production of repeatedly frothable foam glassInfo
- Publication number
- GB1049479A GB1049479A GB4865564A GB4865564A GB1049479A GB 1049479 A GB1049479 A GB 1049479A GB 4865564 A GB4865564 A GB 4865564A GB 4865564 A GB4865564 A GB 4865564A GB 1049479 A GB1049479 A GB 1049479A
- Authority
- GB
- United Kingdom
- Prior art keywords
- glass
- water
- foam glass
- heated
- alkaline earth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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
- C03C11/00—Multi-cellular glass ; Porous or hollow glass or glass particles
- C03C11/007—Foam glass, e.g. obtained by incorporating a blowing agent and heating
Abstract
Repeatably frothable foam glass is made by a process comprising grinding glass with a SO3 content of at least 0.5% by weight in the presence of 0.15-0.30% of active soot, or the equivalent quantity of another C carrier, to a specific area of 5000 cm.2/g. or more, and providing at least 0.7% wt. water, which mainly adheres to the surface of the glass. The water may be supplied by use of water, steam or moist air. The resulting substance which may be in a mould or on a free surface is heated so rapidly to 200 DEG C. above the m.p. that a thin continuous gas-tight external glaze coating is formed. The entire portion is then heated to 800-900 DEG C., whereupon foam glass results. The residual SO3 content is still sufficiently high for it to be reground, if necessary being replenished with C, and used again as above. The glass preferably gives in boiling water more than 1 mg. of Na2O per g., and contains not more than 7% wt. alkaline earth oxides. In an example, a glass containing in per cent by weight SiO2, 74.5; alkali oxide, 19; alkaline earth oxide 6.5; and SO3, 0.8; is ground with active soot and treated as above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4865564A GB1049479A (en) | 1964-11-30 | 1964-11-30 | Process for the production of repeatedly frothable foam glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4865564A GB1049479A (en) | 1964-11-30 | 1964-11-30 | Process for the production of repeatedly frothable foam glass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1049479A true GB1049479A (en) | 1966-11-30 |
Family
ID=10449425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4865564A Expired GB1049479A (en) | 1964-11-30 | 1964-11-30 | Process for the production of repeatedly frothable foam glass |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1049479A (en) |
-
1964
- 1964-11-30 GB GB4865564A patent/GB1049479A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB966733A (en) | Improved method of glass treatment and product | |
| GB966732A (en) | Improved method of glass treatment and product | |
| EP0072390A3 (en) | Process for the preparation of moulded articles from pyrogenically prepared oxides | |
| GB955629A (en) | Refractory articles and methods of making such refractory articles | |
| ES373098A1 (en) | Solid catalysts containing silicium phosphate their manufacture and use | |
| GB1049479A (en) | Process for the production of repeatedly frothable foam glass | |
| ES350244A1 (en) | Method for manufacturing improved perlite filteraid products | |
| GB966792A (en) | Improvements relating to refractories | |
| GB934087A (en) | Method of manufacturing water soluble polyvinyl alcohol derivatives | |
| KR840004603A (en) | Treatment method of metal oxide powder | |
| NO150510C (en) | LEADING ADDITION TO USE IN THE GLASS INDUSTRY AND CERAMIC INDUSTRY AND PROCEDURES OF PRODUCING THEREOF | |
| GB974644A (en) | A process for the production of bonded molecular sieve pellets | |
| GB948309A (en) | A method of de-alkalising glass | |
| GB836348A (en) | Glass composition | |
| GB1112005A (en) | A method of producing highly active addition products of zinc oxide and silica | |
| GB739046A (en) | Inress for cleansing dentures | |
| GB730602A (en) | Formaldehyde solutions | |
| GB1299531A (en) | Process for treating glass surfaces | |
| JPS54141848A (en) | Production of porous article containing filler | |
| GB813739A (en) | Dry size and method of making the same | |
| JPS54107898A (en) | Production of silica sol fluid | |
| ES256083A3 (en) | A procedure for structuring a silicone sun (Machine-translation by Google Translate, not legally binding) | |
| GB833143A (en) | Improvements relating to the production of hydrophilic substantially fluorine-free silicon dioxide | |
| GB996034A (en) | Pigments | |
| GB1069227A (en) | Improvements relating to methods of strengthening glass objects |