FIELD: chemistry.
SUBSTANCE: invention relates to chemistry and can be used in production of low-alkaline alumina which is obtained from carbonisation or decomposition aluminium hydroxide. Alkali-containing aluminium hydroxide is washed with boiling 5% boric acid solution, with liquid phase to solid phase weight ratio of 5:1. The pulp is then filtered and calcined without washing at temperature 1275-1325°C for one hour.
EFFECT: invention reduces power consumption.
2 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR OBTAINING LOW-ALKALI ALUMINA | 1992 |
|
RU2047561C1 |
| METHOD OF PRODUCING LOW-ALKALINITY FINE α-ALUMINA | 2002 |
|
RU2241672C2 |
| PROCESS FOR PRODUCTION OF REACTIVE ALPHA ALUMINA | 2022 |
|
RU2791045C1 |
| PROCESS FOR PRODUCING ALPHA-ALUMINA | 0 |
|
SU908747A1 |
| METHOD OF PRODUCING ALPHA-ALUMINUM OXIDE POWDER WITH PARTICLE SIZE IN RANGE OF 1-4 mcm | 2023 |
|
RU2818557C1 |
| METHOD OF PREPARING ALUMINIUM HYDROXIDE | 1997 |
|
RU2175641C2 |
| OBTAINING SCANDIUM-CONTAINING CONCENTRATE AND FOLLOWING REMOVING THE SCANDIUM OXIDE OF HIGH PURITY | 2016 |
|
RU2647398C2 |
| METHOD OF COMPLEX PROCESSING ALUMINOSILICATE MATERIAL | 2007 |
|
RU2373152C2 |
| METHOD OF PROCESSING SILICA-ALUMINA STOCK | 2013 |
|
RU2574252C2 |
| METHOD OF PRODUCING LOW-ALKALI SPECIAL SILICA | 0 |
|
SU1838241A3 |
