FIELD: chemistry.
SUBSTANCE: method for producing aluminium oxide includes washing, purification from metal oxides by means of hydrochloric acid and drying. As the starting material for the production of aluminium, an aluminous sludge formed after burning the solid-fuel rocket motor (SFRM) is used. The sludge is separated from the impurities by filtration. Then, purifying with a solution of 10% hydrochloric acid, washing with water without heat treatment and plasticization and drying are carried out.
EFFECT: invention allows to simplify the production of aluminium oxide satisfying the requirements for non-metallurgical alumina, with reduction in acid consumption and energy consumption and increase in environmental friendliness.
1 dwg,1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR COMPLEX PROCESSING OF ALUMINIUM-CONTAINING SALT SLAGS | 2020 |
|
RU2753809C1 |
| METHOD OF PRODUCING THERMALLY ACTIVATED METALLURGICAL ALUMINA AND PLANT FOR ITS IMPLEMENTATION | 2015 |
|
RU2591162C1 |
| METHOD OF COMBUSTION OF SOLID PROPELLANT | 2004 |
|
RU2282742C2 |
| METHOD OF PRODUCING METALLURGICAL ALUMINA (VARIANTS) | 2016 |
|
RU2647041C1 |
| METHOD OF EXTRACTION OF SCANDIUM IN PROCESSING BAUXITES FOR ALUMINA | 2001 |
|
RU2201988C2 |
| METHOD FOR COMPLEX PROCESSING OF RED MUD | 2022 |
|
RU2782894C1 |
| METHOD OF PROCESSING ALUMINUM PRODUCTION WASTE (VERSIONS) | 1997 |
|
RU2137852C1 |
| METHOD FOR PRODUCING ALUMINA, MAINLY FROM HIGH-SILICA BAUXITE | 2022 |
|
RU2801847C1 |
| METHOD OF RECOVERING COAGULANT FROM HYDROXIDE-CONTAINING WATER- TREATMENT SLUDGE | 1998 |
|
RU2133225C1 |
| METHOD OF OBTAINING ACTIVE ALUMINIUM OXIDE | 2011 |
|
RU2473468C1 |
