GB1189649A - Improvements in and relating to the Production of Oxide Materials. - Google Patents
Improvements in and relating to the Production of Oxide Materials.Info
- Publication number
- GB1189649A GB1189649A GB2440066A GB2440066A GB1189649A GB 1189649 A GB1189649 A GB 1189649A GB 2440066 A GB2440066 A GB 2440066A GB 2440066 A GB2440066 A GB 2440066A GB 1189649 A GB1189649 A GB 1189649A
- Authority
- GB
- United Kingdom
- Prior art keywords
- magnesium oxide
- take place
- lithium salt
- magnesium
- isopropanol
- 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
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F5/00—Compounds of magnesium
- C01F5/02—Magnesia
- C01F5/06—Magnesia by thermal decomposition of magnesium compounds
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/10—Solid density
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
1,189,649. Dense magnesium oxide. THERMAL SYNDICATE Ltd. 31 Aug., 1967 [1 June, 1966], No. 24400/66. Heading C1A. A block of magnesium oxide of density not less than 3À50 gm./c.c. is made by intimately mixing magnesium oxide powder of surface area determined by nitrogen adsorption greater than 10 m<SP>2</SP>/g. (prepared by calcining a decomposable magnesium compound below 850‹ C.) with 0À1 to 10% by weight of finely divided lithium salt, e.g. lithium fluoride, sintering by heating in air at 700‹ C. or above, heating to 800‹ to 1400‹ C. while compressing in a die under 500 to 3000 p.s.i. pressure in a vacuum less than 0À5 torr, and firing at 1000‹ C. or above in a moving atmosphere. Calcination to produce magnesium oxide may take place in a rotary drum. The intimate mixture may be formed by mixing slurries of magnesium oxide and lithium fluoride in an inert organic liquid, e.g. isopropanol, grinding in a colloid mill and evaporating most of the solvent. Sintering may take place in a recrystallized alumina tube, and graphite dies are preferably used in the compression. Firing to remove excess lithium salt may take place in an atmosphere of air, argon, or oxygen. Specified decomposable magnesium compounds are the sulphate, hydroxide, oxalate and basic carbonate. Magnesium oxide and lithium salt may be prepared as suspensions in an inert organic liquid, e.g. isopropanol in order to minimize pick-up of CO 2 and water vapour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2440066A GB1189649A (en) | 1966-06-01 | 1966-06-01 | Improvements in and relating to the Production of Oxide Materials. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2440066A GB1189649A (en) | 1966-06-01 | 1966-06-01 | Improvements in and relating to the Production of Oxide Materials. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1189649A true GB1189649A (en) | 1970-04-29 |
Family
ID=10211144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2440066A Expired GB1189649A (en) | 1966-06-01 | 1966-06-01 | Improvements in and relating to the Production of Oxide Materials. |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1189649A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2166424A (en) * | 1984-11-01 | 1986-05-08 | Atomic Energy Authority Uk | Synthetic rock materials |
-
1966
- 1966-06-01 GB GB2440066A patent/GB1189649A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2166424A (en) * | 1984-11-01 | 1986-05-08 | Atomic Energy Authority Uk | Synthetic rock materials |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4273587A (en) | Polycrystalline transparent spinel sintered body and a method for producing the same | |
| US3895963A (en) | Process for the formation of beta alumina-type ceramics | |
| US4357427A (en) | Economic preparation of alumina suitable for isostatic pressing and sintering | |
| GB1479260A (en) | Calcium aluminate cement | |
| Atlas | Effect of some lithium compounds on sintering of MgO | |
| Kim et al. | Plasma sintering of alumina | |
| GB1285965A (en) | Process for preparing moulded articles | |
| AU7959087A (en) | Process for the continuous production of high purity, ultra-fine, aluminum nitride powder by the carbo- nitridization of alumina | |
| CN109928763A (en) | Tantalum-based oxynitride nano powder and preparation method thereof | |
| GB1434136A (en) | Sintered refractory material | |
| US4339511A (en) | Preparation of powders suitable for conversion to useful β-aluminas | |
| ES352389A1 (en) | Utilizing aluminum mono-orthophosphate as fugitive binder in manufacture of sintered porous alumina articles | |
| GB1189649A (en) | Improvements in and relating to the Production of Oxide Materials. | |
| ES445349A1 (en) | Production of aluminium | |
| GB1131586A (en) | Improvements relating to dispenser cathodes | |
| GB1354366A (en) | Tools | |
| GB802905A (en) | Improvements in or relating to electrolytic cells for the production of aluminium | |
| US3025137A (en) | Production of sintered compacts of beryllia | |
| US3897257A (en) | Light transmitting polycrystalline magnesia member and method of making | |
| GB1160662A (en) | Process for the Removal of Sulphur Dioxide from an Oxygen-Containing Gas Mixture and Acceptors for use in this process | |
| US3438848A (en) | Molded graphite bodies and process for making the same | |
| GB1385728A (en) | Preparation of alumina bodies containing metal or metal carbide or nitride | |
| GB1491563A (en) | Binderless granules of aluminum oxide and molecular sieve zeolite | |
| Daimon et al. | EFFECTS OF ZRO 2 ULTRAFINE PARTICLE ADDITIVE ON THE FORMATION OF AL 2 O 3 FROM SULPHATE. | |
| Kainarskii et al. | Hot pressing of oxides in the presence of a liquid phase |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed |