Method for recovering copper sulfate crystals from waste copper slag

The invention discloses a method for recovering copper sulfate crystals from waste copper slag, and belongs to the technical field of smelting engineering byproduct recycling, the method adopts low acid leaching, high acid leaching, hydrogen peroxide impurity removal, evaporation concentration and c...

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Bibliographische Detailangaben
Hauptverfasser:	LIU SHICONG, ZHAO GUIJUN, NIE ZHENGYANG, YE YUHUA, DOU QIANGMIN, LI CHENGXUE
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE APPARATUS THEREFOR CHEMISTRY CRYSTAL GROWTH FERROUS OR NON-FERROUS ALLOYS METALLURGY PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE REFINING BY ZONE-MELTING OF MATERIAL SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE SINGLE-CRYSTAL-GROWTH TREATMENT OF ALLOYS OR NON-FERROUS METALS UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL
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Beschreibung
Zusammenfassung:	The invention discloses a method for recovering copper sulfate crystals from waste copper slag, and belongs to the technical field of smelting engineering byproduct recycling, the method adopts low acid leaching, high acid leaching, hydrogen peroxide impurity removal, evaporation concentration and cooling crystallization methods for treatment, copper slag generated by a zinc smelting purification system is subjected to two-stage acid leaching to obtain a copper slag leaching solution, and the copper slag leaching solution is subjected to two-stage acid leaching to obtain copper sulfate crystals. Then hydrogen peroxide and basic cupric carbonate are added for iron removal, liquid obtained after iron removal is subjected to evaporation concentration and cooling crystallization so that copper sulfate crystals can be separated and purified, liquid obtained after crystallization is subjected to copper deposition and then returns to the corresponding zinc hydrometallurgy procedure, it is guaranteed that valuable me