FIELD: non-iron metallurgy, in particular crystallizing of sodium sulfate.
SUBSTANCE: sodium sulfate from solution of electrolytic aluminum manufacturing is recovered by saturation of gas cleaning solution with sodium sulfate, cooling of obtained solution with cooler, and precipitate separation. Cooling of sulfate containing solution to 8-120C is carried out in refrigerator through a wall, and cooling to 0-(-2)0C is carried out by direct contact with cooler.
EFFECT: increased refrigerate durability, seduced labor cost, equipment cost, and energy consumption.
8 cl, 1 tbl, 3 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR OBTAINING CRYSTALLINE SODIUM SULFATE FROM LIQUID WASTE OF ELECTROLYTIC ALUMINUM PRODUCTION | 2020 |
|
RU2758438C1 |
| METHOD FOR CRYSTALLIZATION OF SALTS FROM SOLUTIONS | 1995 |
|
RU2102107C1 |
| METHOD FOR CRYSTALLIZATION OF SODIUM SULFATE FORM GAS TREATMENT SOLUTION ORIGINATING FROM ELECTROLYTIC ALUMINUM PRODUCTION | 2001 |
|
RU2215689C2 |
| METHOD OF CRYSTALLIZATION OF SODIUM SULPHATE FROM GAS CLEANING OF ALUMINUM PRODUCTION | 2018 |
|
RU2682555C1 |
| DISTRIBUTOR FOR FEEDING GAS TO CRYSTALLIZER | 0 |
|
SU1230619A1 |
| METHOD OF PROCESSING FLUORINE-CONTAINING WASTES OF ALUMINIUM PRODUCTION | 0 |
|
SU789392A1 |
| DISTRIBUTING APPARATUS FOR FEEDING AIR IN CRYSTALLISER | 0 |
|
SU858860A1 |
| PRODUCTION LINE FOR SETTLING BATH REGENERATION | 0 |
|
SU1763531A1 |
| METHOD FOR COMPLEX PROCESSING OF GAS CLEANING SOLUTIONS IN ALUMINUM PRODUCTION | 2022 |
|
RU2805533C1 |
| METHOD OF PRODUCING ALUMINIUM FLUORIDE | 2011 |
|
RU2462418C1 |
