GB676538A - Improvements in or relating to mullite-stabilized alumina pebbles and process of preparation thereof - Google Patents
Improvements in or relating to mullite-stabilized alumina pebbles and process of preparation thereofInfo
- Publication number
- GB676538A GB676538A GB24147/49A GB2414749A GB676538A GB 676538 A GB676538 A GB 676538A GB 24147/49 A GB24147/49 A GB 24147/49A GB 2414749 A GB2414749 A GB 2414749A GB 676538 A GB676538 A GB 676538A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alumina
- per cent
- mix
- mullite
- calcining
- 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
- C04B35/16—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 silicates other than clay
- C04B35/18—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 silicates other than clay rich in aluminium oxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/02—Boron or aluminium; Oxides or hydroxides thereof
- B01J21/04—Alumina
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/70—Compounds containing carbon and sulfur, e.g. thiophosgene
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Structural Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Ceramic Products (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
676,538. Refractory compositions. PHILLIPS PETROLEUM CO. Sept. 20, 1949 [Oct. 4, 1948], No. 24147/49. Drawings to Specification. Class 22 Mullite-stabilizing alumina pebbles are prepared from a plastic mix of finely comminuted alumina and aluminium silicate, the silica content varying between 0.3 and 12 per cent by weight of the free alumina and the mix containing not more than 1 per cent free silica and impurities, by forming spheres from the mix, drying the spheres, calcining at 2900‹ to 3200‹F for at least 2 hours and until their porosity lies between 5 and 20 per cent, and the average crystal size of the alumina lies between 0.5 and 50 microns. Ball clay, kaolin, andalusite, kyanite, sillimanite or mixtures thereof may be used as the aluminium silicate. In the case of an alumina-rich silicate pre-calcining at 2500‹-2700‹F is preferred to prevent future volume changes. Plasticizers, e.g. carboxy methyl cellulose may be added. Both ingredients should have a particle size within the range 150-400 (Standard U.S. screen scale).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US676538XA | 1948-10-04 | 1948-10-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB676538A true GB676538A (en) | 1952-07-30 |
Family
ID=22077459
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB24147/49A Expired GB676538A (en) | 1948-10-04 | 1949-09-20 | Improvements in or relating to mullite-stabilized alumina pebbles and process of preparation thereof |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB676538A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5846891A (en) * | 1997-06-10 | 1998-12-08 | Korea Institute Of Science And Technology | Thermal shock-resistant alumina-mullite composite material and preparation method thereof |
EP2379470A2 (en) * | 2008-12-31 | 2011-10-26 | Saint-Gobain Ceramics & Plastics Inc. | Ceramic article and process for making the same |
DE102016224443A1 (en) * | 2016-12-08 | 2018-06-14 | Siemens Aktiengesellschaft | Erosion-resistant ceramic material, powder, slurry and component |
-
1949
- 1949-09-20 GB GB24147/49A patent/GB676538A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5846891A (en) * | 1997-06-10 | 1998-12-08 | Korea Institute Of Science And Technology | Thermal shock-resistant alumina-mullite composite material and preparation method thereof |
EP2379470A2 (en) * | 2008-12-31 | 2011-10-26 | Saint-Gobain Ceramics & Plastics Inc. | Ceramic article and process for making the same |
EP2379470A4 (en) * | 2008-12-31 | 2012-07-25 | Saint Gobain Ceramics | Ceramic article and process for making the same |
DE102016224443A1 (en) * | 2016-12-08 | 2018-06-14 | Siemens Aktiengesellschaft | Erosion-resistant ceramic material, powder, slurry and component |
US11028018B2 (en) | 2016-12-08 | 2021-06-08 | Siemens Energy Global GmbH & Co. KG | Erosion-resistant ceramic material, powder, slip and component |
US11834377B2 (en) | 2016-12-08 | 2023-12-05 | Siemens Energy Global GmbH & Co. KG | Erosion-resistant ceramic material, powder, slip and component |
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