GB1236856A - Refractory, fired magnesia brick - Google Patents
Refractory, fired magnesia brickInfo
- Publication number
- GB1236856A GB1236856A GB3880569A GB3880569A GB1236856A GB 1236856 A GB1236856 A GB 1236856A GB 3880569 A GB3880569 A GB 3880569A GB 3880569 A GB3880569 A GB 3880569A GB 1236856 A GB1236856 A GB 1236856A
- Authority
- GB
- United Kingdom
- Prior art keywords
- magnesia
- grained
- lime
- weight
- fine
- 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
Abstract
1,236,856. Magnesia brick. OSTERREICHISCH-AMERIKANISCHE MAGNESIT A.G. 1 Aug., 1969 [5 Aug., 19681, No. 38805/69. Addition to 1,221,401. Heading C1J. A fired magnesia brick contains 1-8%, based on the weight of magnesia, of alumina and less than 1% Fe 2 O 3 , has a lime/silica ratio from 1À65: 1 to 2À50: 1 by weight and is composed of more than 50 wt. per cent coarse-grained magnesia having a particle size of at least 0À3 mm. and having a lime/silica ratio of 1À70:1 to 5À0:1, less than 50% fine-grained magnesia having a particle size of at most 0À2 mm., and at least 2% of fine-grained magnesia having a lime/silica ratio below 1, the coarse-grained magnesia and the total fine-grained magnesia containing less than 1% Fe 2 O 3 . The bricks are pressed from a mix containing magnesia particles, 1-8% alumina particles, e.g. corundum or fused corundum of below 4 mm., and a binder such as tar, pitch, bitumen or a pitch produced by the evaporation of sulphite liquor. When the alumina is below 0À12 mm., 1-10%, based on the weight of magnesia, of sodium metaphosphate or dicalcium phosphate can be added to prevent the #-# transformation of dicalcium silicate. The magnesia grains used can be either sintered or fused.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT50868A AT280136B (en) | 1968-01-18 | 1968-01-18 | Refractory, burned magnesite brick |
| AT759268A AT286160B (en) | 1968-08-05 | 1968-08-05 | Refractory burned magnesite brick |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1236856A true GB1236856A (en) | 1971-06-23 |
Family
ID=25592987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3880569A Expired GB1236856A (en) | 1968-01-18 | 1969-08-01 | Refractory, fired magnesia brick |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1236856A (en) |
-
1969
- 1969-08-01 GB GB3880569A patent/GB1236856A/en not_active Expired
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