GB892038A - Method of preparing refractory shapes - Google Patents
Method of preparing refractory shapesInfo
- Publication number
- GB892038A GB892038A GB13004/60A GB1300460A GB892038A GB 892038 A GB892038 A GB 892038A GB 13004/60 A GB13004/60 A GB 13004/60A GB 1300460 A GB1300460 A GB 1300460A GB 892038 A GB892038 A GB 892038A
- Authority
- GB
- United Kingdom
- Prior art keywords
- exceeding
- minutes
- lime
- time
- dolomite
- 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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/03—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
- C04B35/057—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite based on calcium oxide
Abstract
A refractory composition containing at least 50% by weight of free lime such as pure lime, dead burned dolomite and mixtures of lime and dolomite with dead burned magnesia, is flash fired by raising its temperature to at least 1000 DEG F. in a time not exceeding five minutes. The refractory powders are vacuum extruded, calcined at 2800 DEG F. to 3000 DEG F., crushed to size and then moulded to shape using paraffin wax, oil or tar as a binder. The shaped refractories are finally fired at 2500 DEG F. to 3000 DEG F., the time taken to 1000 DEG F. not exceeding five minutes and the time to 1500 DEG F. preferably not exceeding fifteen minutes. U.S.A. Specifications 2,678,887 and 2,876,122 are referred to.ALSO:A refractory containing at least 50% by weight of free lime is flash fired by raising its temperature to at least 1000 DEG F. in a period not exceeding fine minutes. The refractories which are so treated are:- pure lime, dead burned dolomite, and mixtures of lime and dolomite with dead burned magnesia. The refractory powders are vacuum extruded, calcined at 2800 DEG F. to 3000 DEG F., crushed to size and then moulded to shape using paraffin wax, oil or tar as a binder. The shaped refractories are then fired at 2500 DEG F. to 3000 DEG F. the time take to 1000 DEG F. not exceeding five minutes and the time to 1500 DEG F. preferably not exceeding fifteen minutes. U.S.A. Specifications 2,678,887 and 2,876,122 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US892038XA | 1959-04-22 | 1959-04-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB892038A true GB892038A (en) | 1962-03-21 |
Family
ID=22216297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13004/60A Expired GB892038A (en) | 1959-04-22 | 1960-04-12 | Method of preparing refractory shapes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB892038A (en) |
-
1960
- 1960-04-12 GB GB13004/60A patent/GB892038A/en not_active Expired
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