FIELD: non-ferrous metallurgy; cleaning sulfate zinc solutions from admixtures.
SUBSTANCE: proposed method consists in two-stage cleaning of sulfate zinc solutions from copper and cadmium; cleaning of solution from cadmium is performed at first stage to residual content not exceeding 30 mg/l; second stage is performed due to additional delivery of solution of copper sulfate at content of sum of ions of copper and cadmium within 70-100 mg/l at temperature of solution of 75-80 C and pH= 4.6-4.9.
EFFECT: improved quality of cleaned solution.
1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF REFINING SULFATE ZINC SOLUTIONS TO REMOVE IMPURITIES | 2003 |
|
RU2238993C1 |
| METHOD OF PURIFICATION OF ZINC SULFATE SOLUTIONS FROM IMPURITIES | 2004 |
|
RU2274667C1 |
| METHOD OF CLEANING SULFATE ZINC SOLUTIONS FROM ADMIXTURES | 2004 |
|
RU2282671C2 |
| METHOD OR REMOVING IMPURITIES FROM ZINC SULFATE SOLUTIONS | 2000 |
|
RU2186131C2 |
| METHOD OF PURIFICATION OF ZINC SULFATE SOLUTIONS FROM IMPURITIES | 2000 |
|
RU2172351C1 |
| METHOD FOR PURIFICATION OF ZINC SOLUTION FROM IMPURITIES | 0 |
|
SU1724710A1 |
| METHOD OF CONTINUOUS TWO-STEP PURIFICATION OF ZINC SOLUTIONS FROM IMPURITIES | 0 |
|
SU876760A1 |
| METHOD OF PRODUCING ZINC POWDER FROM ZINC-CONTAINING WASTES | 2020 |
|
RU2743567C1 |
| METHOD FOR REMOVAL OF SULFATE IONS FROM ZINC PRODUCTION SOLUTIONS | 2002 |
|
RU2224035C1 |
| METHOD FOR CONTINUOUS TWO-STAGE PURIFICATION OF ZINC SULFATE SOLUTIONS FROM IMPURITIES | 0 |
|
SU1043177A1 |
