GB1386013A - Process of producing refractory magnesia-chrome bricks and compositions - Google Patents
Process of producing refractory magnesia-chrome bricks and compositionsInfo
- Publication number
- GB1386013A GB1386013A GB2046672A GB2046672A GB1386013A GB 1386013 A GB1386013 A GB 1386013A GB 2046672 A GB2046672 A GB 2046672A GB 2046672 A GB2046672 A GB 2046672A GB 1386013 A GB1386013 A GB 1386013A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- compositions
- cro
- chrome
- added
- 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
- C04B35/04—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 magnesium oxide
- C04B35/043—Refractories from grain sized mixtures
- C04B35/047—Refractories from grain sized mixtures containing chromium oxide or chrome ore
- C04B35/0473—Refractories from grain sized mixtures containing chromium oxide or chrome ore obtained from fused grains
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
1386013 Refractory linings OSTERREICHISCH-AMERIKANISCHE MAGNESIT AG 2 May 1972 [7 May 1971] 20466/72 Heading ClJ [Also in Division F4] Linings in degasifying vessels and in converters for the oxygen-argon process (Jocelyn process) consist of magnesia-chrome bricks formed from a granulated, fused material which contains 10-35 wt. per cent Cr 2 O 3 , up to 4À5 wt. per cent CaO + SiO 2 and has a Cr 2 O 2 : Fe 2 O 3 ratio of at least 3À0. The material may be obtained by fusing a mixture of MgO or precursor thereof with chrome ore with or without added Cr 2 O 3 or CrO 3 , either under non-reducing or reducing conditions (in which latter case, resulting metallic iron is removed magnetically). Manganese and aluminium oxides are stated to be present as impurities. In one embodiment, up to 10 wt. per cent of finely-ground Cr 2 O 3 or CrO 3 is added to the fused material.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT397971A AT319838B (en) | 1971-05-07 | 1971-05-07 | Material for lining degassing vessels, converters and electric furnaces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1386013A true GB1386013A (en) | 1975-03-05 |
Family
ID=3558005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2046672A Expired GB1386013A (en) | 1971-05-07 | 1972-05-02 | Process of producing refractory magnesia-chrome bricks and compositions |
Country Status (6)
| Country | Link |
|---|---|
| AT (1) | AT319838B (en) |
| ES (1) | ES402226A1 (en) |
| FR (1) | FR2137640B1 (en) |
| GB (1) | GB1386013A (en) |
| IT (1) | IT951293B (en) |
| NL (1) | NL7206143A (en) |
-
1971
- 1971-05-07 AT AT397971A patent/AT319838B/en not_active IP Right Cessation
-
1972
- 1972-04-10 IT IT2298772A patent/IT951293B/en active
- 1972-04-28 ES ES402226A patent/ES402226A1/en not_active Expired
- 1972-05-02 GB GB2046672A patent/GB1386013A/en not_active Expired
- 1972-05-05 NL NL7206143A patent/NL7206143A/xx not_active Application Discontinuation
- 1972-05-08 FR FR7216427A patent/FR2137640B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2137640A1 (en) | 1972-12-29 |
| FR2137640B1 (en) | 1980-04-18 |
| ES402226A1 (en) | 1975-03-16 |
| AT319838B (en) | 1975-01-10 |
| IT951293B (en) | 1973-06-30 |
| NL7206143A (en) | 1972-11-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |