FIELD: inorganic compounds production. SUBSTANCE: product of invention contains particles of monocrystalline α- aluminum oxide which are homogeneous and include no seed crystals, have octa- or higher polyhedral form and D/H ratio from 0.5 to 3.0 where D is maximum particle diameter parallel to the plane of hexagonal lattice in hexagonal tightly packed lattice of particles and H is diameter perpendicular to the plane of hexagonal lattice, have average particle size of the main fraction higher than 5 mcm and not higher than 30 mcm, contain sodium below 0.05 wt % (in conversion to sodium oxide), and are characterized by aluminum oxide purity no less than 99.90 wt %. EFFECT: improved special characteristics of product. 4 cl, 6 dwg , 2 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| ALUMINUM OXIDE | 1993 |
|
RU2107662C1 |
| METHOD OF ALUMINIUM α-OXIDE PRODUCING (VARIANTS) | 1993 |
|
RU2114059C1 |
| METHOD OF PREPARING ALPHA-ALUMINUM POWDER AND ALPHA-ALUMINUM POWDER | 1994 |
|
RU2136596C1 |
| METHOD OF PRODUCING ALPHA-ALUMINA (VERSIONS) | 1994 |
|
RU2126364C1 |
| α---ALUMINA POWDER AND A METHOD OF ITS PRODUCING | 1994 |
|
RU2118612C1 |
| COMPLEX METAL OXIDE POWDER, YTTRIUM-ALUMINUM GARNET POWDER (VERSIONS), AND METHOD FOR PREPARING COMPLEX METAL OXIDE | 1994 |
|
RU2137715C1 |
| SINTERED BODY FROM ALPHA-ALUMINA FOR PRODUCING SAPPHIRE SINGLE CRYSTAL | 2011 |
|
RU2579596C2 |
| POWDER OF METAL OXIDE, POWDER OF TITANIUM OXIDE, METHOD OF PRODUCING METAL OXIDE POWDER | 1994 |
|
RU2127221C1 |
| ALUMINUM OXIDE COMPOSITION (VERSIONS) AND METHOD OF MANUFACTURING ALUMINUM OXIDE CERAMICS | 1994 |
|
RU2138461C1 |
| ALUMINIUM α-OXIDE FOR OBTAINING SAPPHIRE MONOCRYSTAL AND METHOD OF OBTAINING THEREOF | 2011 |
|
RU2554196C2 |
