FIELD: electrolytic production of aluminum; roasting of aluminum electrolyzer hearth.
SUBSTANCE: proposed method includes heating the hearth to temperature not below 900°C; hearth is heated to temperature of 300°C at a rate of 40-60°C/h and from temperature of 300°C to 450-500°C at a rate of 15-25°C/h; upon attaining of temperature of 450-500°C, holding is carried out for 9-12 h, after which hearth is heated to temperature of 900°C at a rate of 15-25°C/h.
EFFECT: increased service life of electrolyzers.
1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| ALUMINUM CELL HEARTH ROASTING METHOD | 2005 |
|
RU2303653C2 |
| METHOD FOR FIRING HEARTH OF ALUMINIUM CELL | 2000 |
|
RU2169212C1 |
| METHOD OF ANNEALING FETTLINGS OF ALUMINUM ELECTROLYZER | 0 |
|
SU723006A1 |
| METHOD OF PRE-START PREPARATION OF ALUMINIUM ELECTROLYZER | 0 |
|
SU1548268A1 |
| CATHODE DEVICE OF ALUMINIUM ELECTROLYZER | 0 |
|
SU735662A1 |
| METHOD OF ALUMINIUM ELECTROLYZER FIRING | 0 |
|
SU1765261A1 |
| METHOD FOR MOUNTING HEARTH OF ALUMINUM CELL | 2001 |
|
RU2200212C2 |
| METHOD OF THERMAL PREPARATION OF AMUMINIUM ELECTROLYZER TO ITS START UP | 0 |
|
SU765403A1 |
| UNIT FOR HEATING AND BURNING ELECTROLYZER HEARTH IN ALUMINIUM PRODUCTION | 0 |
|
SU734312A1 |
| METHOD OF ROASTING CATHODE AND ANODE DEVICES OF ALUMINIUM ELECTROLYZER | 0 |
|
SU1145058A1 |
