FIELD: non-ferrous metallurgy; cementation cleaning of sulfate zinc solutions from admixtures.
SUBSTANCE: proposed method includes stage of cleaning the solutions from copper and cadmium at obtaining copper-and-cadmium cake followed by leaching-out this cake to copper cake and final cleaning stage when remaining admixtures are removed and copper-containing solution and antimony-containing additive are delivered. Solution of reworking of copper cake is used as copper-containing solution. Reworking of copper cake includes washing-off admixtures continued for 4-6 h at temperature of 50-70°C and final pH of 2-3 and subsequent stage of sulfuric acid leaching of copper from washed-off cake.
EFFECT: low cost of cementation cleaning.
1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PURIFICATION OF ZINC SULFATE SOLUTIONS FROM IMPURITIES | 2004 |
|
RU2274667C1 |
| METHOD OF CLEANING SULFATE ZINC SOLUTIONS FROM ADMIXTURES | 2003 |
|
RU2233893C1 |
| METHOD OF REFINING SULFATE ZINC SOLUTIONS TO REMOVE IMPURITIES | 2003 |
|
RU2238993C1 |
| CLEANING METHOD AGAINST CHLORINE OF SULFATE ZINC SOLUTIONS | 2008 |
|
RU2372413C1 |
| METHOD OF CONTINUOUS TWO-STEP PURIFICATION OF ZINC SOLUTIONS FROM IMPURITIES | 0 |
|
SU876760A1 |
| METHOD OF PURIFICATION OF ZINC SULFATE SOLUTIONS FROM IMPURITIES | 2000 |
|
RU2172351C1 |
| METHOD FOR PURIFICATION OF ZINC SOLUTION FROM IMPURITIES | 0 |
|
SU1724710A1 |
| METHOD FOR LEACHING COPPER AND CADMIUM CAKES | 0 |
|
SU979514A1 |
| METHOD FOR CONTINUOUS TWO-STAGE PURIFICATION OF ZINC SULFATE SOLUTIONS FROM IMPURITIES | 0 |
|
SU1043177A1 |
| METHOD FOR PURIFYING ZINC SULFATE FROM COPPER AND CADMIUM | 0 |
|
SU1018993A1 |
