IL42200A - Process of producing sintered magnesia - Google Patents
Process of producing sintered magnesiaInfo
- Publication number
- IL42200A IL42200A IL42200A IL4220073A IL42200A IL 42200 A IL42200 A IL 42200A IL 42200 A IL42200 A IL 42200A IL 4220073 A IL4220073 A IL 4220073A IL 42200 A IL42200 A IL 42200A
- Authority
- IL
- Israel
- Prior art keywords
- zircon
- magnesia
- particle size
- sintered
- sintered magnesia
- Prior art date
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
- C04B35/0435—Refractories from grain sized mixtures containing refractory metal compounds other than chromium oxide or chrome ore
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
1408833 Sintered magnesia containing zircon OSTERREICHISCH - AMERIKANISCHE MAGNESIT AG 4 May 1973 [25 May 1972] 21320/73 Heading C1A Production of sintered magnesia from magnesium compounds yielding perclase on firing, particularly from raw magnesite, or from caustic magnesia, wherein the magnesium compounds are mixed with zircon (ZrO 2 .SiO 2 ) in an amount of 0À2 to 3À6%, preferably 0À4 to 2À4%, based on the MgO content of the resulting sintered magnesia. The zircon has a particle size of at most 0À2 mm, and at least 90% of the zircon having a particle size below 0À075 mm. In an example the starting material consisted of a raw magnesite, all particles of which were below 0À12 mm., and 94À8% of which had a particle size below 0À075 mm. Zircon, 1À2% ZrO 2 SiO 2 was added and the resultant mixture together with spent sulphite cellulose liquor as a binder, was compacted to form briquettes, which were then sintered at about 1850 C. The resultant product had a particle specific gravity of 3À4 and an open pore volume of 2À13%.
[GB1408833A]
Claims (6)
1. . A process of producing sintered magnesia from magnesiu compounds yielding periclase on firing, particularly from raw magnesite, or from caustic magnesia, wherein the magnesium comp or the caustic magnesia is mixed with zircon in an amount of 0.2 to 3.6 %, preferably 0. to 2. , based on the content said zircon having particle size of at most 0.2 mm, and at least 9 % of the zirco having a particle size below 0.075 mm, and. the resulting mixtur is briquetted and sintered.
2. A process according to claim 1 , wherein raw magnesite used as magnesium compound and zircon is used in an amount of 0 to 1 .8 %, preferably 0.4 to 1 .2 .
3. A process according to claim 1 or 2 , wherein the magne compounds or the caustic magnesia are used in a particle size o at most mm and with at least 15 % of these particles being smaller than 0.0 5 mm.
4. A process according to claim 3 , wherein at least 80 % the magnesium compounds or of the caustic magnesia are used in particle size below 0. 1 mm.
5. · A process according to any of claims to 4, wherein t corrected lime-silica weight ratio in the mixture to be sintere is adjusted to a value of 1 .7 to 2. 2 , preferabl 1 .85 to 2.0.
6. A process of producing sintered magnesia by sintering mixture of magnesium compounds yielding periclase or of caustic magnesia and zircon substantiall as hereinbefore described. 7 · A sintered magnesia produced by a process claimed in any preceding claim.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT451372A AT317755B (en) | 1972-05-25 | 1972-05-25 | Process for the production of sintered magnesia |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IL42200A0 IL42200A0 (en) | 1973-07-30 |
| IL42200A true IL42200A (en) | 1976-05-31 |
Family
ID=3564996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IL42200A IL42200A (en) | 1972-05-25 | 1973-05-04 | Process of producing sintered magnesia |
Country Status (14)
| Country | Link |
|---|---|
| AT (1) | AT317755B (en) |
| BR (1) | BR7303728D0 (en) |
| CA (1) | CA979025A (en) |
| CS (1) | CS177131B2 (en) |
| DE (1) | DE2233042C3 (en) |
| FR (1) | FR2190756B1 (en) |
| GB (1) | GB1408833A (en) |
| IL (1) | IL42200A (en) |
| IN (1) | IN138689B (en) |
| IT (1) | IT987641B (en) |
| RO (1) | RO64462A (en) |
| SE (1) | SE393097B (en) |
| YU (1) | YU34871B (en) |
| ZA (1) | ZA732845B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2648311C2 (en) * | 1975-10-28 | 1983-11-17 | Centre de Recherches Métallurgiques-Centrum voor Research in de Metallurgie-Association sans but lucratif-Vereniging zonder winstoogmerk, Bruxelles | Refractory raw material |
| DE3720460A1 (en) * | 1987-06-20 | 1988-12-29 | Didier Werke Ag | METHOD FOR PRODUCING A BURNED, FIREPROOF MAGNESIA STONE BASED ON SINTERMAGNESIA AND FINE DISTRIBUTED CIRCONIZED SILICONE |
| DE4337916A1 (en) * | 1993-11-06 | 1995-05-11 | Aken Magnesitwerk Gmbh | Shaped and unshaped refractory compositions based on magnesia |
| DE19544698C1 (en) * | 1995-11-30 | 1997-06-05 | Abb Research Ltd | Magnesium oxide substrate containing copper oxide |
| DE102017121452B9 (en) * | 2017-09-15 | 2024-04-04 | Refratechnik Holding Gmbh | Process for producing a porous sintered magnesia, batch for producing a coarse ceramic refractory product with a grain of sintered magnesia, use of the batch for producing the product and process for producing the product |
-
1972
- 1972-05-25 AT AT451372A patent/AT317755B/en not_active IP Right Cessation
- 1972-07-05 DE DE2233042A patent/DE2233042C3/en not_active Expired
-
1973
- 1973-04-26 ZA ZA732845A patent/ZA732845B/en unknown
- 1973-05-04 IL IL42200A patent/IL42200A/en unknown
- 1973-05-04 GB GB2132073A patent/GB1408833A/en not_active Expired
- 1973-05-08 YU YU1216/73A patent/YU34871B/en unknown
- 1973-05-10 CA CA170,959A patent/CA979025A/en not_active Expired
- 1973-05-11 FR FR7317106A patent/FR2190756B1/fr not_active Expired
- 1973-05-11 SE SE7306666A patent/SE393097B/en unknown
- 1973-05-15 RO RO7374786A patent/RO64462A/en unknown
- 1973-05-16 IT IT24180/73A patent/IT987641B/en active
- 1973-05-18 CS CS3599A patent/CS177131B2/cs unknown
- 1973-05-21 BR BR3728/73A patent/BR7303728D0/en unknown
- 1973-06-02 IN IN1301/CAL/73A patent/IN138689B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ZA732845B (en) | 1974-03-27 |
| DE2233042B2 (en) | 1974-10-31 |
| FR2190756A1 (en) | 1974-02-01 |
| IT987641B (en) | 1975-03-20 |
| IN138689B (en) | 1976-03-13 |
| CA979025A (en) | 1975-12-02 |
| AT317755B (en) | 1974-09-10 |
| SE393097B (en) | 1977-05-02 |
| FR2190756B1 (en) | 1976-03-05 |
| GB1408833A (en) | 1975-10-08 |
| YU34871B (en) | 1980-04-30 |
| DE2233042A1 (en) | 1973-12-13 |
| IL42200A0 (en) | 1973-07-30 |
| YU121673A (en) | 1979-10-31 |
| CS177131B2 (en) | 1977-07-29 |
| BR7303728D0 (en) | 1974-07-18 |
| DE2233042C3 (en) | 1975-06-19 |
| RO64462A (en) | 1980-06-15 |
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