Method for processing cobalt waste slag and recycling cobalt by sodium persulfate oxidation treatment

The invention discloses a cobalt recovery method by the oxidation treatment of cobalt residues with sodium persulfate, which comprises the following main steps of first-stage leaching, cadmium replacing, filtering and drying, second-stage leaching, filtering, iron removing, cobalt oxidizing and prec...

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Bibliographische Detailangaben
Hauptverfasser:	LIU CANGLONG, XIE SULONG, HE LEQIONG, CHE HONGZHI, LIU XIANWEN, YANG SHOUMING, PU ZHONGYUN, LIU HAILONG, ZHOU TAIGANG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS FERROUS OR NON-FERROUS ALLOYS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS METALLURGY PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	The invention discloses a cobalt recovery method by the oxidation treatment of cobalt residues with sodium persulfate, which comprises the following main steps of first-stage leaching, cadmium replacing, filtering and drying, second-stage leaching, filtering, iron removing, cobalt oxidizing and precipitating with sodium persulfate, filtering and cobalt concentrate obtaining. Compared with the similar method, the sodium persulfate oxidation method is used to treat the cobalt residues, so that the content of the cobalt in the enriched cobalt concentrate can reach more than 18.6 percent and is more than 40 times that of the raw materials. Moreover, the invention uses the sodium persulfate oxidation method to enrich and extract the cobalt in the cobalt concentrate, so that the production technology can be obviously simplified and the production cost can be reduced.