Method of separating lead from brass recycling circuit, involves subjecting brass recycling circuit to electrolytic copper refining in sulfuric acid, cementation by sodium hydroxide and zinc addition and electrolytic zinc recovery

A brass recycling circuit is subjected to electrolytic copper refining in sulfuric acid to form copper cathode material. The brass recycling circuit is further subjected to solid-liquid separation (s1), cementation by sodium hydroxide and zinc addition, solid-liquid separation (s2), electrolytic zin...

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Bibliographische Detailangaben
Hauptverfasser:	GROHBAUER, ADOLF, NOLL, TONY
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	APPARATUS THEREFOR CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS ELECTROLYTIC OR ELECTROPHORETIC PROCESSES 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 PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY ORREFINING OF METALS 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:	A brass recycling circuit is subjected to electrolytic copper refining in sulfuric acid to form copper cathode material. The brass recycling circuit is further subjected to solid-liquid separation (s1), cementation by sodium hydroxide and zinc addition, solid-liquid separation (s2), electrolytic zinc recovery from electrolyte, precipitation with lime and/or sodium hydroxide, electrolytic treatment with addition of water, sulfuric acid and copper-containing sulfuric acid. A brass recycling circuit is subjected to electrolytic copper refining in sulfuric acid to form copper cathode material. The brass recycling circuit is further subjected to solid-liquid separation (s1), cementation by sodium hydroxide and zinc addition, solid-liquid separation (s2), electrolytic zinc recovery from electrolyte, precipitation with lime and/or sodium hydroxide, electrolytic treatment with addition of water, sulfuric acid and copper-containing sulfuric acid, and optionally copper salts and other copper-containing compounds are subjected to electrolytic copper refinement to form copper cathode material. Die Erfindung betrifft ein Verfahren zur Abtrennung von Blei aus dem Messing-Recycling-Kreislauf, wobei ein Umschmelzen von Messing-Recycling-Material zu Anodenmaterial durchgeführt wird, welches in folgenden Aufbereitungskreislauf eingebracht wird: - Elektrolytische Kupfer-Raffination des Messing-Recycling-Materials in Schwefelsäure zur Herstellung von Kupfer-Kathodenmaterial, - erste fest-flüssig Trennung, - Zementation mittels NaOH- und Zink-Zugabe, - zweite fest-flüssig Trennung, - Elektrolytische Zink-Gewinnung aus Elektrolyt, - Fällung mittels Kalk- und/oder NaOH-Zugabe, - Elektrolytaufbereitung unter Zugabe von H2O, H2SO4, Cu-haltiger Schwefelsäurebeize und wahlweise Kupfer-Salze sowie andere kupferhaltige Verbindungen zur erneuten elektrolytischen Kupfer-Raffination zu Kupfer-Kathodenmaterial.