FIELD: metallurgy.
SUBSTANCE: invention relates to non-ferrous metallurgy and can be used at method of cleaning against chlorine of zinc-sulfate solutions, received at sulfuric acid leaching of secondary zinc raw material, containing chlorine. Method includes sedimentation of chlorine-ion in the form of copper-chlorine cake by addition of copper-bearing solution and copper cake, containing metallic copper. In the capacity of copper-bearing solution it is used solution, formed at sulfuric acid leaching of solid residue, received after solution of copper-chlorine cake in solution of sodium hydroxide. Additionally copper-chlorine cake is solved in the solution of sodium hydroxide at concentration 50-75 g/l.
EFFECT: reduction of consumption of flowing copper cake to cleaning of zinc-sulfate solutions against chlorine and reduction of costs for this process.
2 cl, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
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RU2317344C1 |
| METHOD OF CLEANING SULFATE ZINC SOLUTIONS FROM ADMIXTURES | 2004 |
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| PROCESS FOR TREATING SULFIDE COPPER-ZINC MATERIALS | 1995 |
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| PROCESSING METHOD OF SULPHIDE-OXIDATED COPPER ORES WITH COPPER AND SILVER EXTRACTION | 2009 |
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RU2439177C2 |
| METHOD OF INDIUM CONCENTRATION FROM ZINC SULFATE SOLUTIONS | 2000 |
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RU2181783C1 |
| METHOD FOR REPROCESSING OF FUSED COPPER-NICKEL SULFIDE ORES CONTAINING COBALT, IRON AND PLATINUM GROUP METALS | 2003 |
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