METHOD OF PROCESSING SULFIDE COPPER-ZINC MATERIALS

metallurgy; processing sulfide polymetallic materials containing zinc, copper and iron. SUBSTANCE: proposed method includes autoclave oxidizing leaching of part of ground starting material under pressure of oxygen at temperature above sulfur melting point and mole ratio of H2SO4:Zn equal to (0.85-1....

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Bibliographische Detailangaben
Hauptverfasser:	DJUDIN JU.K, TIMOSHENKO EH.M, SHEVTSOV B.I, PTITSYN A.M, GIGANOV G.P
Format:	Patent
Sprache:	eng ; rus
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:	metallurgy; processing sulfide polymetallic materials containing zinc, copper and iron. SUBSTANCE: proposed method includes autoclave oxidizing leaching of part of ground starting material under pressure of oxygen at temperature above sulfur melting point and mole ratio of H2SO4:Zn equal to (0.85-1.12) for obtaining zinc-containing solution and insoluble residue containing copper, zinc, iron in form of sulfides, lead and precious metals followed by direction of zinc-containing solution to next leaching stage to which part of starting material is fed; leaching at second stage is performed by autoclave oxidizing method at temperature above sulfur melting point and mole ratio of H2SO4:Zn equal to (0.85 - 1.12), thus obtaining solution containing at least 100 g/l of zinc and insoluble residue containing copper, zinc, iron and precious metals; insoluble residues are directed for processing by known methods. EFFECT: enhanced efficiency of processing sulfide copper-and-zinc materials at low content of zinc; increased throughput of process and improved quality of commercial product. 1 tbl, 3 ex