GB630268A - Improvements in or relating to refractory articles and to their manufacture - Google Patents
Improvements in or relating to refractory articles and to their manufactureInfo
- Publication number
- GB630268A GB630268A GB907/47A GB90747A GB630268A GB 630268 A GB630268 A GB 630268A GB 907/47 A GB907/47 A GB 907/47A GB 90747 A GB90747 A GB 90747A GB 630268 A GB630268 A GB 630268A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- calcium sulphate
- combustible material
- composition
- flux
- 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
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/1315—Non-ceramic binders
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Dispersion Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
Abstract
Porous refractory products are prepared by reacting finely divided silica powder, which is fine enough to pass through a sieve having 400 spaces per linear inch, with finely powdered calcium sulphate hemihydrate and a small amount of powdered flux, preferably an aluminosilicate such as feldspar or beryl, the insulating qualities of the product being preferably improved by the incorporation of combustible pore-forming materials in the composition. The calcium sulphate hemihydrate preferably comprises 10 per cent to 35 per cent, the flux 1 to 5 per cent and the combustible material, if present, 10-30 per cent by weight of the composition. The solid materials are mixed with sufficient water to render the mix fluid and placed in a suitable mould where the calcium sulphate sets, the solidified shape being then removed and dried, and fired to about 1400 DEG C. The combustible material is preferably sawdust, but pulverized nut-shells, ground coke or wood flour may be employed, porosity being obtained not only by burning out the combustible material but also by driving off the water of hydration and the volatile portion of the calcium sulphate.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US630268XA | 1946-01-12 | 1946-01-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB630268A true GB630268A (en) | 1949-10-10 |
Family
ID=22046420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB907/47A Expired GB630268A (en) | 1946-01-12 | 1947-01-10 | Improvements in or relating to refractory articles and to their manufacture |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB630268A (en) |
-
1947
- 1947-01-10 GB GB907/47A patent/GB630268A/en not_active Expired
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